JP2016190616A - Vehicle front information acquisition device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent unauthorized attachment of a vehicle front information acquisition sensor.SOLUTION: A vehicle front information acquisition device 10 includes a vehicle front information acquisition sensor 12 and a bracket 16 which is fixed on an inner surface of a windshield 14 and holds the vehicle front information acquisition sensor. The sensor 12 has a support shaft 24 projecting outward, and the bracket 16 has a receiving groove 16G. The bracket 16 includes interference parts 40, 44 for preventing unauthorized attachment which prevents engagement of a nonreturn engagement member 26 and an engaged member 28 by interfering with the sensor 12 when the sensor is pivotally moved around the support shaft so as to approach the windshield 14 in a state that the support shaft 24 is not inserted in the receiving groove 16G to a previously set insertion position.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a vehicle forward information acquisition device that acquires information ahead of a vehicle.

  In some vehicles such as automobiles, the vehicle front information acquisition sensor of the vehicle front information acquisition device installed in the vehicle interior is used to acquire and record information ahead of the vehicle or to assist the driver in driving the vehicle. Forward information is acquired. Examples of the vehicle front information acquisition sensor include a CCD camera, a radar sensor, and an infrared sensor. Among the vehicle front information acquisition sensors, a sensor used particularly for the purpose of preventing a vehicle collision is called a pre-crash safety sensor (abbreviated as “PCS sensor”). The vehicle front information acquisition sensor (abbreviated as “information acquisition sensor” as necessary) is generally attached to a bracket fixed to the inner surface of the windshield by adhesion so that the attachment state is maintained.

  For example, Patent Document 1 below describes an example of a vehicle front information acquisition device configured such that an in-vehicle camera is attached to a bracket fixed to a windshield. The information acquisition sensor is an in-vehicle camera, and the bracket has a leaf spring as a spring mechanism.

  In the vehicle front information acquisition device described in Patent Document 1, the in-vehicle camera is attached to the bracket in a sliding manner. Support shafts provided on both side surfaces of the in-vehicle camera are inserted into engagement grooves of hook portions provided on the side portions of the bracket, and one end of the in-vehicle camera is pressed against a leaf spring provided at one end of the bracket. As a result, the leaf spring is compressed and deformed. And the engagement protrusion provided in the other end of the vehicle-mounted camera is fitted in the engagement hole provided in the other end of the bracket, and the amount of compression deformation of the leaf spring is slightly reduced. Through the above steps, the in-vehicle camera is held by the bracket in a state where the support shaft is inserted into the engaging groove and the in-vehicle camera is pressed against the other end of the bracket by the spring force of the leaf spring.

JP 2013-193558 A

[Problems to be Solved by the Invention]
When an information acquisition sensor such as an in-vehicle camera is slidably attached to the bracket and is held by the bracket by the spring force of a leaf spring, the information acquisition sensor is easily displaced with respect to the bracket when the vehicle travels. That is, the amount of compressive deformation of the leaf spring may change, and the support shaft may move within the engagement groove. Further, since the engagement hole is larger than the engagement protrusion so that the engagement protrusion can be fitted into the engagement hole, it is inevitable that the engagement protrusion moves freely in the engagement hole.

  If the information acquisition sensor is displaced with respect to the bracket after completion of the mounting, the position of the information acquisition sensor with respect to the windshield is different from the position where it should be, so that the information acquisition accuracy of the vehicle front information acquisition device is lowered. Therefore, the support shaft is inserted into the receiving groove provided in the bracket, and in this state, the information acquisition sensor is pivoted around the support shaft, and the information acquisition sensor and the check engagement structure provided in the bracket are provided. It is conceivable to hold them together.

  However, even in the case of pivotal attachment, when the information acquisition sensor is pivoted in a state where the support shaft is not inserted to the preset insertion position, the position of the information acquisition sensor with respect to the windshield is inherently present. It will be different from the power position. Attachment of the vehicle forward information acquisition device to the bracket is performed by an operator located below them. When the support shaft is inserted into the receiving groove, the support shaft enters the blind spot due to the bracket, so that it is not easy for the operator to accurately grasp the position of the support shaft in the receiving groove.

  Further, when the information acquisition sensor is pivoted toward a predetermined mounting position in a state where the support shaft is not properly inserted, a frictional force acts between the information acquisition sensor and the bracket. The information acquisition sensor is held by the bracket by the force. In that case, even if the operator releases the force to pivot the information acquisition sensor, the information acquisition sensor maintains the state held by the bracket. And it is easy to misrecognize that the engagement of the check engagement structure is completed.

  The main problem of the present invention is that, in a vehicle front information acquisition device in which the information acquisition sensor is pivotally attached, when the support shaft is improperly inserted into the receiving groove, the information acquisition sensor is improperly attached to the bracket. It is to be prevented.

[Means for Solving the Problems and Effects of the Invention]
According to the present invention, the vehicle front information acquisition sensor and the bracket that is fixed to the inner surface of the windshield and holds the vehicle front information acquisition sensor, the information acquisition sensor has a support shaft that protrudes outward, The bracket is provided with a vehicle forward information acquisition device having a receiving groove for receiving the support shaft.

  The information acquisition sensor is pivoted so that the support shaft is inserted into the receiving groove up to a preset insertion position while being tilted within a preset angle range with respect to the windshield, and approaches the windshield around the support shaft. The non-removable engaging member provided on one of the information acquisition sensor and the bracket is engaged with the engaged member provided on the other of the information acquisition sensor and the bracket, so that the bracket is set in advance. Configured to be mounted in position.

  When at least one of the information acquisition sensor and the bracket is pivoted around the support shaft in a state where the support shaft is not inserted into the receiving groove to the preset insertion position, the information acquisition sensor and the bracket It has the interference part for unauthorized attachment prevention which blocks that a non-return engagement member and a to-be-engaged member engage by interfering with the other.

  According to the above configuration, the information acquisition sensor is preset with respect to the bracket by being pivoted around the support shaft when the support shaft is inserted into the receiving groove to the preset insertion position. Brought to the mounting position. Then, when the check engagement member and the engaged member are engaged with each other, the information acquisition sensor and the bracket are maintained at a preset mounting position. Therefore, the information acquisition sensor can be attached and held on the bracket at a preset attachment position.

  However, when the support shaft is not inserted into the receiving groove to the preset insertion position, even if the information acquisition sensor is pivoted around the support shaft, the non-fitting attachment preventing interference member and Engagement of the engaged member is prevented. In other words, even if the operator pivots the information acquisition sensor around the support shaft toward the preset installation position, the check engagement member and the engaged member do not engage, and the information acquisition sensor It cannot be attached to the bracket. Therefore, it is possible to prevent the information acquisition sensor from being attached to the bracket at a position other than the preset installation position without requiring the operator to grasp the position of the support shaft in the receiving groove. can do.

  According to the present invention, in the above configuration, the support shafts are provided on both sides near the one end of the information acquisition sensor, the two support shafts are aligned with each other along the one end, and the interference unit for preventing improper attachment. When the information acquisition sensor is pivoted to approach the windshield around the support shaft in a state where the two support shafts are not inserted into the receiving groove to the preset insertion position, the information acquisition sensor and the bracket The interference part for 1st unauthorized attachment prevention which prevents that a non-return engagement member and a to-be-engaged member engage can be included by interfering with the other.

  According to said structure, the interference part for unauthorized attachment prevention contains the interference part for 1st unauthorized attachment prevention. If the information acquisition sensor is pivoted around the support shaft in a state where the two support shafts are not inserted into the receiving groove to the preset insertion position, the first engagement portion for preventing improper attachment The combined member and the engaged member are prevented from engaging. Accordingly, it is possible to prevent the information acquisition sensor from being improperly attached to the bracket when the two support shafts are not inserted into the receiving groove to the preset insertion position.

  According to the present invention, in the above configuration, the support shafts are provided on both sides in the vicinity of one end of the information acquisition sensor, the two support shafts are aligned with each other along one end, and one support shaft is previously The information acquisition sensor is pivoted around the support shaft so as to approach the windshield in a state where the insertion shaft is inserted to the set insertion position and the other support shaft is not inserted into the reception groove until the preset insertion position. In this case, the information acquisition sensor and the bracket may include a second improper attachment preventing interference unit that prevents the non-engaging member and the engaged member from engaging with each other by interfering with each other.

  According to said structure, the interference part for unauthorized attachment prevention contains the 2nd interference part for unauthorized attachment prevention. If one of the support shafts is properly inserted into the receiving groove and the other support shaft is not properly inserted into the receiving groove, the information acquisition sensor is pivoted around the support shaft to prevent second unauthorized mounting. The interference portion prevents the check engagement member and the engaged member from being engaged. Therefore, it is possible to prevent the information acquisition sensor from being improperly attached to the bracket when only one support shaft is properly inserted into the receiving groove.

  According to the present invention, in the above-described configuration, the first unauthorized attachment preventing interference portion of the information acquisition sensor interferes with a portion having the largest pivot radius when the information acquisition sensor is pivoted around the support shaft. In order to do so, it may be provided on the bracket.

  According to the above configuration, the information acquisition sensor is provided with an information acquisition sensor as compared with the case where the first unauthorized attachment preventing interference portion is provided between the portion having the largest pivot radius of the information acquisition sensor and the support shaft. The pivoting prevention torque to be increased can be increased. Therefore, it is possible to effectively prevent the information acquisition sensor from being improperly attached to the bracket while reducing the load on the first unauthorized attachment preventing interference portion.

  According to the present invention, in the above configuration, a pair of first improper attachment preventing engagement portions may be provided that are spaced along a direction in which the two support shafts are aligned with each other.

  According to said structure, a pair of 1st engaging part for unauthorized attachment prevention is provided in the state spaced apart along the two support shafts. Therefore, even when the two support shafts are not properly inserted into the receiving groove, the pair of first improper attachment preventing interference portions effectively engage the check engagement member and the engaged member. Can be prevented.

  Further, according to the present invention, in the above configuration, a pair of second unauthorized attachment preventing engagement portions spaced apart along a direction in which the two support shafts are aligned with each other may be provided.

  According to said structure, a pair of 2nd engaging part for unauthorized attachment prevention is provided in the state spaced apart along the two support shafts. Therefore, even if any of the two support shafts is not properly inserted into the receiving groove, the second engagement preventing interference portion effectively engages the check engagement member and the engaged member. Can be prevented.

  According to the present invention, in the above configuration, the information acquisition sensor has a guided portion at a portion where the pivot radius is the largest, and the bracket pivots so that the information acquisition sensor approaches the windshield around the support shaft. The guide part may be provided so as to guide the guided part when being squeezed, and the first improper attachment preventing interference part may be provided integrally with the guide part.

  According to said structure, when an information acquisition sensor is pivoted so that it may approach a windshield around a support shaft, the to-be-guided part of an information acquisition sensor is guided by the guide part of a bracket. Therefore, the information acquisition sensor can be smoothly and reliably pivoted to a preset mounting position. Further, the first unauthorized attachment preventing interference portion is provided integrally with the guide portion. Therefore, compared with the case where the first unauthorized attachment preventing interference portion is provided separately from the guide portion, the strength of the first unauthorized attachment preventing interference portion is easily secured, and the vehicle front information acquisition device The structure can be simplified.

  Further, according to the present invention, in the above configuration, the bracket has a pair of attachment portions for attaching the cover that covers the information acquisition sensor to the bracket, and the second interference attachment preventing interference portion is integrated with the attachment portion. May be provided.

  According to said structure, a pair of attachment part for attaching a cover to a bracket can be utilized effectively, and the interference part for 2nd unauthorized attachment prevention of a bracket can be provided integrally with an attachment part. Therefore, compared with the case where the second unauthorized attachment preventing interference portion is provided separately from the attachment portion, the strength of the second unauthorized attachment preventing interference portion is easily ensured, and the vehicle front information acquisition device The structure can be simplified.

  Further, according to the present invention, in the above configuration, when the support shaft is inserted into the receiving groove up to a preset insertion position, the information acquisition sensor is inclined with respect to the windshield within a preset angle range. If not, the support shaft may be prevented from being moved to a preset insertion position by interference between the outer peripheral surface of the support shaft and the wall surface of the receiving groove.

  According to said structure, when an information acquisition sensor is not inclined within the preset angle range with respect to a windshield, a support shaft cannot be moved to the preset insertion position in a receiving groove. Therefore, for example, even when an elastic protective sheet or the like is attached to the surface of the information acquisition sensor on the windshield side, the elastic protective sheet or the like can be prevented from being engaged with the bracket and damaged. Further, it is possible to prevent the information acquisition sensor from being attached to the bracket in a state where the elastic protection sheet or the like is engaged with the bracket and damaged.

It is a perspective view which shows the PCS sensor apparatus comprised as 1st embodiment of the vehicle front information acquisition apparatus by this invention as the figure seen from diagonally back and the downward direction about the condition where the PCS sensor was attached to the bracket. It is a perspective view shown as a figure which looked at the PCS sensor from diagonally forward and above. It is the perspective view shown as a figure which looked at the PCS sensor from diagonally backward and upper direction. It is a perspective view which shows the bracket of 1st embodiment. It is a side view which shows the point in which a PCS sensor is attached to a bracket. It is a perspective view which shows the state in which the PCS sensor was attached to the bracket. It is an expanded partial sectional view which shows the state (solid line) in which the support shaft was appropriately inserted in the receiving groove, and the state (solid line) in which the support shaft was improperly inserted in the receiving groove. It is an expansion partial perspective view which expands and shows the state engaged in the non-return engagement of the non-return engagement part provided in the support base of the PCS sensor and the engaged part provided in the side wall part of the bracket. It is an expanded partial top view which shows the principal part of the bracket of 1st embodiment about the appropriate insertion condition (one-dot chain line) of a support shaft, and the insufficient insertion condition (two-dot chain line) of two support shafts. It is an enlarged partial top view which shows the principal part of the bracket of 1st embodiment about the appropriate insertion condition (one-dot chain line) of a support shaft, and the inappropriate inclination insertion condition (two-dot chain line) of a support shaft. It is an expanded partial sectional view which shows the situation where a PCS sensor is attached to a bracket in a lateral direction in an inappropriate inclination insertion situation of a support shaft. In the conventional vehicle front information acquisition apparatus, it is a top view which shows the condition where a PCS sensor is attached to a bracket in the inappropriate inclination insertion condition of a support shaft. It is sectional drawing which shows the state in which the PCS sensor and the cover were attached to the bracket. A PCS sensor device configured as a second embodiment of the vehicle forward information acquisition device according to the present invention with respect to an appropriate insertion state (one-dot chain line) of the support shaft and an insufficient insertion state (two-dot chain line) of the two support shafts It is an enlarged partial top view which shows the principal part of this bracket. It is an expanded partial top view which shows the principal part of the bracket of 2nd embodiment about the appropriate insertion condition (one-dot chain line) of a support shaft, and the improper inclination insertion condition (two-dot chain line) of a support shaft. A PCS sensor device configured as a third embodiment of the vehicle forward information acquisition device according to the present invention with respect to an appropriate insertion state (one-dot chain line) of the support shaft and an insufficient insertion state (two-dot chain line) of the two support shafts It is an enlarged partial top view which shows the principal part of this bracket. It is an enlarged partial top view which shows the principal part of the bracket of 3rd embodiment about the appropriate insertion condition (one-dot chain line) of a support shaft, and the inadequate inclination insertion condition (two-dot chain line) of a support shaft. It is a perspective view which shows as a figure which looked at the PCS sensor apparatus comprised as 4th embodiment of the vehicle front information acquisition apparatus by this invention from diagonally backward and the downward direction about the condition where the PCS sensor was attached with respect to the bracket. It is an enlarged partial top view which shows the principal part of the bracket of 4th embodiment about the appropriate insertion condition (one-dot chain line) of a support shaft, and the insufficient insertion condition (two-dot chain line) of two support shafts. It is an enlarged partial top view which shows the principal part of the bracket of 4th embodiment about the appropriate insertion condition (one-dot chain line) of a support shaft, and the inappropriate inclination insertion condition (two-dot chain line) of a support shaft. It is a perspective view which shows the PCS sensor apparatus comprised as 5th embodiment of the vehicle front information acquisition apparatus by this invention as the figure seen from diagonally back and the downward direction about the condition where the PCS sensor was attached with respect to the bracket. It is an enlarged partial top view which shows the principal part of the bracket of 5th Embodiment about the appropriate insertion condition (one-dot chain line) of a support shaft, and the insufficient insertion condition (two-dot chain line) of two support shafts. It is an enlarged partial top view which shows the principal part of the bracket of 5th embodiment about the appropriate insertion condition (one-dot chain line) of a support shaft, and the improper inclination insertion condition (two-dot chain line) of a support shaft.

  Hereinafter, preferred embodiments will be described in detail with reference to the accompanying drawings.

[First embodiment]
FIG. 1 is a perspective view showing a PCS sensor device 10 configured as a first embodiment of a vehicle front information acquisition device according to the present invention as seen from an obliquely rear side and below from a situation where a PCS sensor is attached to a bracket. FIG.

  In the following description, “positional relationship such as front end and right side” and “direction such as front” are the positions when the front front of the vehicle is viewed from the passenger compartment in the situation where the PCS sensor is attached to the vehicle. Relationship and direction. Further, in the drawings attached to the present application, cross-sectional hatching is omitted except for some drawings in order to avoid complication.

<Configuration of PCS Sensor Device 10>
As shown in FIG. 1, the PCS sensor device 10 includes a PCS sensor 12 and a bracket 16 fixed to the inner surface of the windshield 14 by bonding. The windshield 14 is attached to the vehicle body in a forward inclined state so as to become lower toward the front of the vehicle (not shown). A cover 18 (see FIG. 13) that covers the PCS sensor 12 is attached to the bracket 16. The bracket 16 and the cover 18 are formed of resin, but may be formed of other materials such as metal.

  As shown in FIGS. 2 and 3, the PCS sensor 12 includes a resin-made support base member 20 and a sensor main body 22 fixed thereto. The sensor main body 22 includes a CCD camera 22A and a radar sensor device 22B for photographing the front of the vehicle. The configuration of the PCS sensor 12 is not important for the present invention, and the PCS sensor 12 may have any configuration as long as it has a function of acquiring information ahead of the vehicle. Also, some of the plurality of sensors that acquire information ahead of the vehicle may be installed behind an emblem provided at the front end of the vehicle, for example.

  As shown in FIG. 4, the bracket 16 includes a pair of side wall portions 16S that are spaced apart from each other in the lateral direction of the vehicle, and a front side connection portion 16F and a rear side connection portion 16R that integrally connect the side wall portions. And has a rectangular frame shape. The vehicle lateral distance between the inner surfaces of the pair of side wall portions 16S is slightly larger than the vehicle lateral width of the PCS sensor 12, and the vehicle front and rear between the inner surfaces of the front connection portion 16F and the rear connection portion 16R. The interval in the direction is slightly larger than the length of the PCS sensor 12 in the vehicle front-rear direction. The pair of side wall portions 16S and the front side connection portion 16F have a base portion 16B extending in a flange shape along one plane, and are bonded to the inner surface of the windshield 14 by the base portion 16B and the rear side connection portion 16R. It is supposed to be fixed.

  As shown in FIGS. 2 and 3, a pair of support shafts 24 projecting away from each other in the lateral direction of the vehicle are provided on the side portion of the front end portion of the sensor main body 22. The axes 24A are aligned with each other. As shown in FIGS. 4, 5, and 7, the front end portion of each side wall portion 16 </ b> S of the bracket 16 is provided with a receiving groove 16 </ b> G that receives the corresponding support shaft 24. Are in the same form.

  When the PCS sensor 12 is attached to the bracket 16, the flat bottom wall portion 20A of the support base member 20 is attached to the base portion 16B of the bracket 16 as shown by the solid line in FIGS. The pair of support shafts 24 are inserted into the receiving groove 16G up to a preset insertion position in a state where the angle is about 45 °. As a result, the PCS sensor 12 is positioned at an appropriate attachment start position with respect to the bracket 16. Next, as indicated by an arrow A in FIG. 6, the rear end portion of the PCS sensor 12 is pressed against the bracket 16, and the PCS sensor 12 is pivoted around the support shaft 24, whereby the bracket 16 At a predetermined mounting position.

  As shown in FIG. 4, the center of the rear connection portion 16 </ b> R of the bracket 16 is provided to guide the rear end portion of the PCS sensor 12 when the PCS sensor 12 is pivoted around the support shaft 24. The guide part 26 is provided. The guide part 26 is integrated with the rear connection part 16R, and extends perpendicularly to the rear connection part 16R in a direction opposite to the front glass 14 side. The guide portion 26 has a V-groove 26G that opens forward, and the depth and opening width of the V-groove 26G decrease as the distance toward the rear connection portion 16R decreases. In the region close to the rear connection portion 16R, It is set to be constant.

  A rectangular notch 28 is provided in a region on the left side of the guide portion 26 of the rear connection portion 16R. Banks 28A are provided on both sides of the notch 28 integrally with the rear connection portion 16R. The height of the bank 28A is set to be much smaller than the height of the guide portion 26.

  As shown in FIGS. 3, 5, and 11, the rear end of the support base member 20 of the PCS sensor 12 has the largest pivot radius when the PCS sensor 12 pivots around the support shaft 24. It is an area. A guided portion 30 is provided at the center of the rear end of the support base member 20. The guided portion 30 is a substantially U-shaped elastically deformable belt-shaped member that opens upward when viewed in the lateral direction, and is integrally connected to the rear end of the support base member 20 at one leg portion. Yes. An engaging protrusion 30P is integrally formed at the tip of the outer surface of the other leg, and the engaging protrusion 30P protrudes in a wedge shape toward the rear.

  When the PCS sensor 12 is pivoted around the support shaft 24 toward a predetermined mounting position, the engagement protrusion 30P enters the V groove 26G of the guide portion 26 and moves along the valley bottom of the V groove 26G. . Therefore, the guide part 26 and the guided part 30 are arranged so that the rear end part of the PCS sensor 12 does not shift laterally with respect to the bracket 16 when the PCS sensor 12 is pivoted. Guide to the mounting position.

  When the PCS sensor 12 is at a predetermined mounting position with respect to the bracket 16, the guided portion 30 is elastic when the engaging protrusion 30 </ b> P is engaged with a portion where the opening width of the V groove 26 </ b> G is constant and is pushed back by the guiding portion 26. Deform. Accordingly, the PCS sensor 12 is urged away from the rear connection portion 16R, that is, forward of the vehicle by the spring force generated by the elastic deformation of the guided portion 30. Accordingly, the support shaft 24 is held at a preset insertion position in the receiving groove 16G, and the PCS sensor 12 is suppressed from being displaced rearward with respect to the bracket 16.

  At the rear end of the support base member 20 of the PCS sensor 12, a rectangular misalignment prevention protrusion 32 is integrally formed at a position on the left side with respect to the guided portion 30, and protrudes in a direction away from the front end of the support base member 20. . The width of the misalignment prevention protrusion 32 is set to be slightly smaller than the width of the notch 28. Therefore, when the PCS sensor 12 reaches a predetermined mounting position, the misalignment prevention protrusion 32 is fitted into the notch 28, thereby preventing the PCS sensor 12 from being displaced laterally with respect to the bracket 16. The movement of the misalignment prevention protrusion 32 into the notch 28 is guided by the bank 28A.

  As shown in FIGS. 2, 3, and 5, a pair of leaf springs 34 are integrally formed at the rear end of the support base member 20 of the PCS sensor 12 so as to be close to the left and right side edges. . As shown in FIGS. 5, 6, 8, and 11, the leaf spring 34 protrudes in a direction away from the front end of the support base member 20 and is curved upward. The leaf spring 34 comes into contact with the contact base 35 provided at the rear connection portion 16R of the bracket 16 immediately before the PCS sensor 12 reaches a predetermined mounting position. Therefore, the leaf spring 34 applies a spring force substantially opposite to the pressing force applied to the rear end portion of the PCS sensor 12 for pivoting to the rear end portion of the PCS sensor 12.

  As shown in FIG. 7, each receiving groove 16 </ b> G includes an introduction portion 16 </ b> GA, a guide portion 16 </ b> GB, and a holding portion 16 </ b> GC that holds the support shaft 24 at a preset insertion position. The introduction portion 16GA extends so as to be inclined backward and away from the base portion 16B so as to form about 45 ° with respect to the base portion 16B. The inclination angle of the guide portion 16GB with respect to the base portion 16B is determined by the introduction portion 16GA. It is smaller than the inclination angle of 16GA.

  The support shaft 24 is provided at three guide protrusions 24X that are spaced apart from each other in the circumferential direction around the axis 24A and project radially outward, and at positions spaced from the guide protrusion 24X in the circumferential direction. And an insertion prevention protrusion 24Y. The guide convex portion 24X and the insertion preventing protrusion 24Y extend along the axis 24A. When the support shaft 24 is in the holding portion 16GC of the receiving groove 16G, the guide convex portion 24X and the insertion preventing protrusion 24Y cooperate with each other to be rotatable around the axis 24A. 24 is held. The guide convex portion 24X and the insertion preventing protrusion 24Y reduce the contact area between the support shaft 24 and the holding portion 16GC as compared with a case where the cross-sectional shape perpendicular to the axis 24A of the support shaft 24 is circular. Therefore, the frictional resistance when the support shaft 24 rotates in the holding portion 16GC is reduced.

  In FIG. 7, the solid line indicates a situation in which the bottom wall portion 20A of the support base member 20 is inclined within a predetermined angle range including 45 ° with respect to the base portion 16B. On the other hand, the broken line indicates a situation where the inclination angle of the bottom wall portion 20A is smaller than a value within a predetermined angle range. When the inclination angle of the PCS sensor 12 is within a predetermined angle range, the guide convex portion 24X and the insertion preventing protrusion 24Y are inserted into the receiving groove 16G up to the insertion position where the support shaft 24 is set in advance, that is, the holding portion 16GC. Allow that. However, when the inclination angle of the PCS sensor 12 is smaller than a value within a predetermined angle range, the guide convex portion 24X and the insertion preventing projection 24Y are inserted into the receiving groove 16G until the support shaft 24 is set to a preset insertion position. Stop that.

  Although not shown in the drawing, an elastic cushioning material such as a sponge sheet or non-woven fabric is attached to the bottom surface 20A of the support base member 20 of the PCS sensor 12 (surface on the side of the windshield 14). The elastic cushioning material exhibits a cushioning action between the support base member 20 and the windshield 14. The insertion of the support shaft 24 is restricted when the inclination angle of the PCS sensor 12 is smaller than a value within a predetermined angle range because the elastic cushioning material is engaged with the bracket 16 or the like when the PCS sensor 12 is attached. This is to prevent peeling or damage.

  As shown in FIGS. 2, 3, 6, and 8, elastically deformable check engagement portions 36 are integrally formed on both sides of the support base member 20 of the PCS sensor 12. . Each check engagement portion 36 extends in a state of being separated from the sensor main body 22 so as to protrude to the side opposite to the bottom wall portion 20 </ b> A of the support base member 20 with respect to the sensor main body 22. Each check engagement portion 36 includes a check claw portion 36A, and an interference claw portion 36B that is integrated with the check claw portion and is located on the tip side of the check claw portion. Is provided on the outer surface side (side opposite to the sensor body 22) of the check engagement portion 36.

  As shown in FIG. 4, each side wall portion 16 </ b> S of the bracket 16 is provided with an engaged portion 38 that can engage with the corresponding check claw portion 36 </ b> A in a non-returning manner. The distance in the vehicle lateral direction between the inner surfaces of the pair of engaged portions 38 is greater than the distance between the outer surfaces of the pair of check engaging portions 36 and between the outer surfaces of the lower ends of the pair of check pawl portions 36A. Less than the distance. Therefore, when the PCS sensor 12 is attached to the bracket 16, each check engagement portion 36 is located inside the corresponding engaged portion 38 except for the check claw portion 36 </ b> A.

  6 and 8 show a state in which the PCS sensor 12 is positioned at a predetermined mounting position with respect to the bracket 16. As shown in these figures, each check pawl portion 36A is fitted into a hole 38A provided in the corresponding engaged portion 38, and the engaged portion 38 and the check pawl portion 36A are non-returnable. Engaging. The check pawl portion 36 </ b> A is pressed by the spring force of the leaf spring 34 to a portion closer to the tip than the hole 38 </ b> A of the engaged portion 38.

  The PCS sensor 12 is attached to the bracket 16 through the above steps, and the PCS sensor 12 is held at a predetermined attachment position with respect to the bracket 16 and the windshield 14. The width in the front-rear direction of the check pawl portion 36A is slightly smaller than the width of the hole 38A. Therefore, when the attachment of the PCS sensor 12 is completed, the check engagement portion 36 and the engaged portion 38 cooperate with each other to prevent the PCS sensor 12 from being displaced in the front-rear direction with respect to the bracket 16.

  When the rear end portion of the PCS sensor 12 is pressed against the bracket 16 and the PCS sensor 12 is attached to the bracket 16 at a predetermined attachment position, an excessive force acts on the windshield 14 via the bracket 16. Preferably not. Therefore, in the PCS sensor 12, it is preferable that one rear end portion in the lateral direction of the vehicle is pressed against the bracket 16, and the other rear end portion in the lateral direction of the vehicle is then pressed against the bracket 16.

  In the first embodiment, as shown in FIG. 4, a pair of central interference ribs 40 are formed on the rear connection portion 16 </ b> R of the bracket 16 so as to be integrated with both side portions of the guide portion 26. ing. These central interference ribs 40 extend in a columnar shape perpendicular to the rear connection portion 16R in a state of protruding forward from the front edge of the rear connection portion 16R of the bracket 16.

  9 and 10, the amount of the protrusion is determined so that the central interference rib 40 is positioned after the PCS sensor 12 if the positional relationship of the PCS sensor 12 with respect to the bracket 16 is appropriate. The size does not interfere with the edges. Further, as shown by the two-dot chain line in FIGS. 9 and 10, the amount of the protrusion is large so that the central interference rib 40 interferes with the rear end of the PCS sensor 12 unless the positional relationship is appropriate. That's it. Further, the distance between the pair of central interference ribs 40 is set to a value slightly larger than the width of the leg on the rear side of the guided portion 30. Therefore, when the PCS sensor 12 is attached to the bracket 16 at a predetermined attachment position, the rear leg portion of the guided portion 30 can enter between the central interference ribs 40.

  Further, an engaged portion 42 for attaching the rear end portion of the cover 18 (see FIG. 13) is integrally provided at a position close to the left and right end portions of the rear connection portion 16R of the bracket 16. Each engaged portion 42 extends in a direction perpendicular to the rear side connection portion 16R, and has a staple shape that opens forward when viewed in a direction perpendicular to the rear side connection portion 16R. Each engaged portion 42 has a hole 42A into which a clip (not shown) provided at the rear end portion of the cover 18 is inserted.

  Further, in the first embodiment, the rear connection portion 16R of the bracket 16 is integrally formed with a side interference rib 44 adjacent to each abutment pedestal 35 at a laterally outer position, and the rear side. It extends in the front-rear direction perpendicular to the connecting portion 16R. In the illustrated embodiment, the side interference ribs 44 are formed integrally with the leg portions 42B outside the corresponding engaged portions 42, but may be provided independently of the leg portions 42B.

<Contrast with conventional structure>
The center interference rib 40 and the side interference rib 44 are not provided in the conventional vehicle front information acquisition apparatus. In the conventional vehicle front information acquisition device, if the PCS sensor 12 is attached to the bracket 16 without being properly positioned, the situation may be as if the PCS sensor 12 was properly attached to the bracket 16. is there.

  For example, consider a situation where both the left and right support shafts 24 are not properly inserted into the receiving groove 16G up to a preset insertion position (in the case of an insufficient insertion situation). Even in this insufficient insertion state, the PCS sensor 12 does not tilt with respect to the bracket 16 as in the case where the attachment is performed with proper positioning. However, the PCS sensor 12 is displaced rearward relative to the bracket 16 with respect to the position where it should originally be (the position indicated by the one-dot chain line in FIGS. 9 and 10), for example, the two-dot chain line in FIG. It becomes a state.

  An operator who attaches the PCS sensor 12 to the bracket 16 is below the bracket 16 and inserts the support shaft 24 into the receiving groove 16G and pushes it in. However, when the PCS sensor 12 is not inclined within the predetermined angle range, the guide protrusion 24X and the insertion prevention protrusion 24Y prevent the support shaft 24 from being inserted into the receiving groove 16G up to a preset insertion position. Is done. Further, when the support shaft 24 is inserted into the receiving groove 16G, the support shaft 24 enters the blind spot around the receiving groove 16G, so that the operator accurately grasps the position of the support shaft 24 in the receiving groove 16G. Is difficult. Therefore, an operator may overlook an insufficient insertion situation.

  In this insufficient insertion state, the engaging protrusion 30P of the engaged portion 30 enters the V groove 26G of the guide portion 26 and moves along the valley bottom of the V groove 26G. However, since the PCS sensor 12 is displaced rearward with respect to the bracket 16 with respect to the original position, the amount of elastic deformation of the engaged portion 30 becomes larger than that in the case where the attachment is performed with proper positioning. As a result, a high pressing force acts between the engagement protrusion 30P and the wall surface of the V-groove 26G, and the pressing force, and hence the frictional force resulting from the pressing force, advances the pivot of the PCS sensor 12 relative to the bracket 16. It increases as you go.

  As a result, the PCS sensor 12 is held by the bracket 16 due to the high frictional force generated when the inclination angle of the PCS sensor 12 with respect to the bracket 16 becomes small, and the PCS sensor 12 does not fall. Therefore, the operator may mistakenly say that the PCS sensor 12 has been properly attached to the bracket 16 at a predetermined attachment position with the support shaft 24 reaching the holding portion 16GC of the receiving groove 16G.

  On the other hand, in the first embodiment, a pair of central interference ribs 40 is provided at the center of the rear connection portion 16R of the bracket 16. 9, the upper surface of the rear end portion of the PCS sensor 12 engages with the front edge of the lower surface of the central interference rib 40, as indicated by a two-dot chain line in FIG. Therefore, the central interference rib 40 prevents the PCS sensor 12 from pivoting upward with respect to the bracket 16 toward a predetermined mounting position.

  As shown in FIG. 12, the left support shaft 24 is inserted into the receiving groove 16G up to a preset insertion position, but the right support shaft 24 is inserted into the reception groove up to a preset insertion position. Consider the situation where 16G is not inserted. In this inappropriate inclination insertion situation, the PCS sensor 12 is inclined leftward with respect to the bracket 16, and the axis 24A of the support shaft 24 is inclined with respect to the position 24A0 where it should be. An inappropriate inclination insertion situation is also likely to occur when the inclination angle when the PCS sensor 12 is attached to the bracket 16 is a lower limit value of a predetermined range or slightly smaller than that.

  As described above, when the support shaft 24 is inserted into the receiving groove 16G, the support shaft 24 enters the blind spot in the portion around the receiving groove 16G, so that the operator can accurately position the support shaft 24 in the receiving groove 16G. It is difficult to grasp. Therefore, as in the case of an insufficient inclination insertion situation, an operator may overlook an inappropriate inclination insertion situation.

  In this inappropriate inclination insertion situation, the engaging protrusion 30P of the engaged portion 30 enters the V groove 26G of the guide portion 26, but does not move along the valley bottom of the V groove 26G, but on the inclined surface of the V groove 26G. Move in an engaged state. Therefore, a high pressing force acts between the engagement protrusion 30P and the wall surface of the V-groove 26G, and the pressing force, and hence the frictional force resulting from the pressing force, causes the PCS sensor 12 to pivot relative to the bracket 16. It increases as

  As a result, the PCS sensor 12 is held by the bracket 16 due to the high frictional force generated when the inclination angle of the PCS sensor 12 with respect to the bracket 16 becomes small, and the PCS sensor 12 does not fall. Therefore, even in the case of an inappropriate inclination insertion situation, the operator can confirm that the PCS sensor 12 is properly attached to the bracket 16 at a predetermined mounting position with the support shaft 24 reaching the holding portion 16GC of the receiving groove 16G. It may be mistaken as “attached”.

  On the other hand, in the first embodiment, a pair of side interference ribs 44 is provided in a region close to the left and right ends of the rear connection portion 16R of the bracket 16. Therefore, when the above-described inappropriate inclination insertion situation occurs, a situation indicated by a two-dot chain line in FIG. That is, the upper surface of the engaged portion 30 and / or the upper surface of the rear end portion of the support base member 20 engages with the front edge of the lower surface of the central interference rib 40. Thus, the central interference rib 40 prevents the PCS sensor 12 from pivoting further with respect to the bracket 16. Further, the leaf spring 34 on the side displaced outward (left side in the case of the inclination shown in FIG. 10) engages with the lower surface of the corresponding side interference rib 44, and the side interference rib 44 also The PCS sensor 12 is prevented from pivoting further with respect to the bracket 16.

  The PCS sensor 12 is prevented from pivoting by the central interference rib 40 and the side interference rib 44 before the PCS sensor 12 moves to a predetermined mounting position with respect to the bracket 16. Therefore, the PCS sensor 12 is not held by the bracket 16, and when the operator releases the pressing force for pivoting the rear end of the PCS sensor 12, the rear end of the PCS sensor 12 is removed from the bracket 16. Displaces away. Therefore, even if an operator overlooks an insufficient insertion situation or an inappropriate inclination insertion situation, it can be effectively prevented that the PCS sensor 12 is mistakenly recognized as being properly attached to the bracket 16.

  As can be seen from the above description, the center interference rib 40 is a first anti-tamper attachment that prevents the engaged portion 38 from engaging with the check pawl portion 36A in an insufficient insertion state. Functions as an interference unit. Further, the center interference rib 40 and the side interference rib 44 are second illegal attachments that prevent the engaged portion 38 from engaging with the check pawl portion 36A in an inappropriate inclined insertion situation. It functions as an interference part for prevention. In addition, the center interference rib 40 functions also as a second unauthorized attachment preventing interference part as described above.

  When the PCS sensor 12 is properly positioned and attached to the bracket 16, the engagement protrusion 30 </ b> P of the engaged portion 30, as indicated by the one-dot chain line in FIGS. 9 and 10. Moves along the bottom of the V-groove 26G. Further, the rear leg portion of the guided portion 30 moves in between the central interference ribs 40, and the rear end of the base member 20 of the PCS sensor 12 passes slightly forward from the central interference rib 40. Further, the pair of leaf springs 34 pass through the sides closer to each other than the corresponding side interference ribs 44.

  Therefore, the center interference rib 40 and the side interference rib 44 do not hinder the PCS sensor 12 from pivoting to a predetermined mounting position with respect to the bracket 16 and being mounted at that position. Further, since the PCS sensor 12 can move to a predetermined attachment position with respect to the bracket 16, it is not hindered that the engaged portion 38 is engaged with the check claw portion 36A in a non-reverse manner. Therefore, the PCS sensor 12 is attached at a predetermined attachment position so that it does not move in the front-rear direction and the up-down direction with respect to the bracket 16 by the engaged portion 38 reversibly engaging with the check claw portion 36A. Is kept in the state.

  Further, in the illustrated embodiment, as shown in FIG. 13, a pair of protrusions 46 are provided integrally with the bottom wall portion 18 </ b> B on the inner surface of the cover 18. The pair of protrusions 46 are spaced apart from each other in the lateral direction and extend in the front-rear direction in the vicinity of the side wall portion 18S. When the PCS sensor 12 is positioned at a predetermined mounting position with respect to the bracket 16 and the check pawl portion 36A is fitted into the hole 38A provided in the engaged portion 38, the tip end of each projection 46 is a corresponding interference claw. It is located inside the portion 36B. Therefore, since the projection 46 does not interfere with the interference claw portion 36B of the check engagement portion 36, the cover 18 can be attached to the bracket 16.

  However, when the PCS sensor 12 is not attached to the bracket 16 at a predetermined attachment position and the check claw portion 36A is not fitted in the hole 38A, the check engagement portion 36 is moved by the engaged portion 38. It is elastically deformed inward (on the sensor body 22 side). Therefore, the protrusion 46 interferes with the interference claw portion 36 </ b> B of the check engagement portion 36 and is prevented from attaching the cover 18 to the bracket 16. Therefore, the check engagement portion 36, the engaged portion 38, and the protrusion 46 are improper attachment prevention structures 48 that prevent the cover 18 from being attached to the bracket 16 when the PCS sensor 12 is not properly attached to the bracket 16. Is configured. Note that the structure of the improper attachment prevention structure 48 may be provided in other embodiments described later.

  Therefore, it is possible to effectively prevent the cover 18 from being attached to the bracket 16 when the PCS sensor 12 is not properly attached to the bracket 16. Further, the operator can recognize that the PCS sensor 12 is not properly attached to the bracket 16 even if the cover 18 cannot be attached to the bracket 16.

  In particular, when the PCS sensor 12 is not properly attached to the bracket 16, the interference claw portion 36B that interferes with the attachment of the cover 18 due to the interference of the protrusion 46 forms the check engagement portion 36 together with the check claw portion 36A. ing. Therefore, the non-return engagement for attaching the PCS sensor 12 to the bracket 16 is different from the case where the interference claw 36B is formed in a part different from the non-return engagement part 36 having the non-return claw 36A. The structure of the part and the improper attachment prevention structure 48 can be simplified.

[Second Embodiment]
14 and 15 are enlarged partial plan views showing a main part of the bracket 16 of the PCS sensor device configured as the second embodiment of the vehicle forward information acquisition device according to the present invention. 14 and 15, members corresponding to those shown in FIGS. 1 to 8 are assigned the same reference numerals as those shown in these drawings. The same applies to the drawings showing other embodiments described later.

  As understood from the comparison between FIG. 14 and FIG. 15 and FIG. 4 or FIG. 9 and FIG. 10, the central interference rib 40 provided in the first embodiment is not provided in the second embodiment. The front surfaces of both side portions of the guide portion 26 are located in the same plane as the front edge of the rear connection portion 16R of the bracket 16. As in the case of the first embodiment, each side interference rib 44 is formed integrally with the outer leg portion 42B of the corresponding engaged portion 42, but the rear connection portion 16R of the bracket 16 is not provided. Projects forward from the leading edge.

  14 and 15, when the positional relationship of the PCS sensor 12 with respect to the bracket 16 is appropriate, the side interference ribs 44 of the PCS sensor 12 The size does not interfere with the rear end. Further, as shown by a two-dot chain line in FIGS. 14 and 15, the amount of the protrusion is that the side interference rib 44 interferes with the rear end of the PCS sensor 12 unless the positional relationship is appropriate. It is a size.

  In the second embodiment, when the left and right support shafts 24 (see FIGS. 2 and 3) are properly inserted into the receiving groove 16G up to the preset insertion position, the alternate long and short dash lines in FIGS. As shown, the PCS sensor 12 is properly positioned with respect to the bracket 16. Therefore, the PCS sensor 12 can pivot to a predetermined mounting position with respect to the bracket 16 without being interfered by the side interference ribs 44.

  However, when the insufficient insertion situation described above in the description of the first embodiment occurs, a situation indicated by a two-dot chain line in FIG. That is, the PCS sensor 12 is not inclined with respect to the bracket 16 but is displaced rearward with respect to the bracket 16 from a position where it should originally be (a position indicated by a one-dot chain line in FIG. 14). Therefore, since the upper surface of the rear end portion of the PCS sensor 12 engages with the front edge of the lower surface of the central interference rib 40, the side interference rib 44 moves upward with respect to the bracket 16 toward the predetermined mounting position of the PCS sensor 12. Stops pivoting.

  Moreover, when the inappropriate inclination insertion situation mentioned above in description of 1st embodiment generate | occur | produces, it will be in the situation shown with the dashed-two dotted line in FIG. That is, the leaf spring 34 on the side displaced outward in the lateral direction (left side in the case of the inclination shown in FIG. 15) engages with the lower surface of the corresponding side interference rib 44. Thus, even in the case of an inappropriate tilt insertion situation, the side interference rib 44 prevents the PCS sensor 12 from pivoting upward relative to the bracket 16 toward a predetermined mounting position.

  In both cases of inadequate insertion and inadequate inclined insertion, the PCS sensor 12 is prevented from pivoting by the side interference rib 44 before the PCS sensor 12 moves to a predetermined mounting position with respect to the bracket 16. To be done. Therefore, the side interference ribs 44 function as first and second unauthorized attachment preventing interference portions that prevent the engaged portion 38 from engaging with the check claw portion 36A in a non-returning manner. Therefore, even if the operator overlooks an insufficient insertion state or an inappropriate inclination insertion state of the support shaft 24 in the receiving groove 16G, it is mistaken that the PCS sensor 12 is properly attached to the bracket 16. It can be effectively prevented.

[Third embodiment]
FIG.16 and FIG.17 is an expanded partial top view which shows the principal part of the bracket 16 of the PCS sensor apparatus comprised as 3rd embodiment of the vehicle front information acquisition apparatus by this invention.

  As can be seen from a comparison between FIG. 16 and FIG. 17 and FIG. 4 or FIG. 9 and FIG. 10, in the third embodiment, the central interference rib 40 is not provided as in the second embodiment. Further, unlike the first and second embodiments, the side interference rib 44 that is integrated with the outer leg portion 42B of the engaged portion 42 is not provided. However, a pair of side interference ribs 50 are provided on the front edge portion of the rear connection portion 16R of the bracket 16 and are not shown in the drawing, but the pair of side interference ribs 50 are first and It has substantially the same height as the side interference rib 44 of the second embodiment.

  Each side interference rib 50 is located adjacent to the abutment pedestal 35 provided in the rear connection portion 16R and on the center side in the lateral direction. Each side interference rib 50 extends partially along the front edge of the rear connection part 16R in a state of protruding forward from the front edge of the rear connection part 16R. Note that, as shown by the one-dot chain line in FIG. 16 and FIG. 17, the amount of the protrusion is determined so that the side interference rib 50 of the PCS sensor 12 has a proper positional relationship with respect to the bracket 16. The size does not interfere with the rear end. Further, as shown by a two-dot chain line in FIGS. 16 and 17, the amount of the protrusion is that the side interference rib 50 interferes with the rear end of the PCS sensor 12 unless the positional relationship is appropriate. It is a size.

  In the third embodiment, when the left and right support shafts 24 are properly inserted into the receiving groove 16G up to the preset insertion position, as shown by the one-dot chain line in FIGS. The sensor 12 is properly positioned with respect to the bracket 16. Therefore, the PCS sensor 12 can pivot to a predetermined mounting position with respect to the bracket 16 without being interfered by the side interference rib 50.

  However, when the above-described insufficient insertion situation occurs, the situation indicated by the two-dot chain line in FIG. Therefore, since the upper surface of the rear end portion of the PCS sensor 12 engages with the front edge of the lower surface of the side interference rib 50, the side interference rib 50 is located above the bracket 16 so that the PCS sensor 12 faces a predetermined mounting position. Stop pivoting to.

  Further, when the above-described inappropriate inclination insertion situation occurs, a situation indicated by a two-dot chain line in FIG. That is, the rear end portion of the support base member 20 of the PCS sensor 12 engages with the front edge of the lower surface of the corresponding side interference rib 50 on the side displaced inward in the lateral direction. Thus, even in the case of an inappropriate tilt insertion situation, the side interference rib 50 prevents the PCS sensor 12 from pivoting upward relative to the bracket 16 toward a predetermined mounting position.

  In both cases of inadequate insertion and inadequate inclined insertion, the side interference rib 50 prevents the PCS sensor 12 from pivoting before the PCS sensor 12 moves to a predetermined mounting position with respect to the bracket 16. To be done. Therefore, the side interference rib 50 functions as first and second unauthorized attachment preventing interference portions that prevent the engaged portion 38 from engaging with the check claw portion 36A in a non-returning manner. Therefore, even if an operator overlooks an insufficient insertion state or an inappropriate inclination insertion state of the support shaft 24, it is effectively prevented that the PCS sensor 12 is mistakenly recognized as being properly attached to the bracket 16. be able to.

[Fourth embodiment]
FIG. 18 is a perspective view showing the PCS sensor device 10 configured as the fourth embodiment of the vehicle front information acquisition device according to the present invention as seen from obliquely rearward and below in a situation where the PCS sensor is attached to the bracket. FIG. FIG.19 and FIG.20 is an enlarged partial top view which shows the principal part of the bracket 16 of 4th embodiment.

  As can be seen from a comparison between FIG. 18 to FIG. 20 and FIG. 4 or FIG. 9 and FIG. 10, the fourth embodiment is provided with a central interference rib 40 as in the case of the first embodiment described above. ing. However, unlike the first to third embodiments, the side interference ribs 44 and 50 are not provided.

  As shown in FIGS. 18 to 20, a pair of interference protrusions 52 are integrally provided at the rear end portion of the support base member 20 of the PCS sensor 12 and linearly extend in the front-rear direction. . The pair of interference protrusions 52 are located on both sides of the guided portion 30 in the lateral direction, and are spaced apart from each other by a distance slightly larger than the distance between the outer surfaces of the both sides of the guide portion 26.

  In the illustrated embodiment, the interference protrusion 52 is positioned so that the tip of the interference protrusion 52 is located behind the rear surfaces of both sides of the guide portion 26 in a situation where the PCS sensor 12 is attached to the bracket 16 at a predetermined position. It has a length. Furthermore, the dimension of the interference projection 52 is set to a value larger than the dimension in the lateral direction so that the strength in the direction perpendicular to the plane of FIG. 19 and FIG.

  The dashed-dotted line of FIG.19 and FIG.20 has shown the condition in which the support shaft 24 on either side is inserted in the receiving groove 16G appropriately to the preset insertion position in 4th embodiment. In this situation, the central interference rib 40 does not interfere with the rear end portion of the PCS sensor 12, and the interference protrusion 52 does not interfere with the central interference rib 40. Therefore, the PCS sensor 12 can pivot to a predetermined mounting position with respect to the bracket 16.

  However, when the above-described insufficient insertion situation occurs, the situation indicated by the two-dot chain line in FIG. Therefore, as in the case of the first embodiment, the upper surface of the rear end portion of the PCS sensor 12 engages with the front edge of the lower surface of the central interference rib 40. Therefore, the central interference rib 40 prevents the PCS sensor 12 from pivoting upward relative to the bracket 16 toward a predetermined mounting position.

  Further, when the above-described inappropriate inclination insertion situation occurs, a situation indicated by a two-dot chain line in FIG. That is, the interference protrusion 52 displaced to the center in the lateral direction engages with the front edge of the lower surface of the corresponding center interference rib 40, and the interference protrusion 52 faces the bracket 16 toward the predetermined mounting position of the PCS sensor 12. Prevents upward pivoting.

  In both cases of insufficient insertion and inappropriate inclination insertion, the PCS sensor 12 is prevented from pivoting by the interference protrusion 52 before the PCS sensor 12 moves to a predetermined mounting position with respect to the bracket 16. Is called. Therefore, the center interference rib 40 functions as a first unauthorized attachment preventing interference portion that prevents the engaged portion 38 from engaging with the check claw portion 36A in a non-returning manner. Further, the interference protrusion 52 and the central interference rib 40 function as a second unauthorized attachment preventing interference portion that prevents the engaged portion 38 from engaging with the check claw portion 36A in a non-returning manner. Therefore, even if an operator overlooks an insufficient insertion state or an inappropriate inclination insertion state of the support shaft 24, it is effectively prevented that the PCS sensor 12 is mistakenly recognized as being properly attached to the bracket 16. be able to.

[Fifth embodiment]
FIG. 21 is a perspective view showing the PCS sensor device 10 configured as the fifth embodiment of the vehicle front information acquisition device according to the present invention as viewed from obliquely rearward and below, in a situation where the PCS sensor is attached to the bracket. FIG. 22 and 23 are enlarged partial plan views showing the bracket 16 of the fifth embodiment.

  As understood from the comparison between FIG. 21 to FIG. 23 and FIG. 4 or FIG. 9 and FIG. 10, in the fifth embodiment, the central interference rib 40 is provided as in the case of the second embodiment. Although not shown, side interference ribs 44 are provided. As in the case of the first and second embodiments, each side interference rib 44 is formed integrally with the outer leg portion 42 </ b> B of the corresponding engaged portion 42. However, each side interference rib 44 does not protrude forward from the front edge of the rear connection portion 16R of the bracket 16, and the front end of each side interference rib 44 is the rear as in the case of the first embodiment. It is aligned with the front edge of the side connection portion 16R.

  At the rear end of the support base member 20 of the PCS sensor 12, interference projections 54 are provided at positions laterally outward of the plate springs 34, and each interference projection 54 is integrated with the root portion of the corresponding plate spring 34. Is formed. Each interference protrusion 54 extends in a block shape along the rear end portion of the support base member 20, and the lateral width is set to a value larger than the thickness of the side interference rib 44.

  If the positional relationship of the PCS sensor 12 with respect to the bracket 16 is appropriate as shown by the alternate long and short dash line in FIGS. 22 and 23, the amount of the protrusion is determined by the interference protrusion 54 and the side interference rib 44. The size does not interfere with each other. Further, as shown by a two-dot chain line in FIGS. 22 and 23, the amount of the protrusion is such that the interference protrusion 54 interferes with the side interference rib 44 if the positional relationship is not appropriate. is there.

  In the fifth embodiment, when the left and right support shafts 24 are properly inserted into the receiving grooves 16G up to the preset insertion position, as shown by the one-dot chain line in FIGS. The protrusion 54 and the side interference rib 44 do not interfere with each other. Therefore, the PCS sensor 12 can pivot to a predetermined mounting position with respect to the bracket 16.

  However, when the above-described insufficient insertion situation occurs, the situation indicated by the two-dot chain line in FIG. Therefore, the left and right interference protrusions 54 engage with the front edges of the lower surfaces of the corresponding side interference ribs 44. Accordingly, the left and right interference protrusions 54 and the side interference ribs 44 prevent the PCS sensor 12 from pivoting upward with respect to the bracket 16 toward a predetermined mounting position.

  Further, when the above-described inappropriate inclination insertion situation occurs, a situation indicated by a two-dot chain line in FIG. 230 occurs. Therefore, in this case, the interference protrusion 54 on the side displaced inward in the lateral direction engages with the front edge of the lower surface of the corresponding side interference rib 44. Further, the leaf spring 34 on the side displaced laterally outwardly engages with the lower surface of the corresponding side interference rib 44. Accordingly, the interference protrusion 54 and the leaf spring 34 cooperate with the side interference rib 44 to prevent the PCS sensor 12 from pivoting upward with respect to the bracket 16 toward a predetermined mounting position.

  In both cases of insufficient insertion and inappropriate inclination insertion, the PCS sensor 12 is prevented from pivoting by the interference protrusions 54 and the side interference ribs 44. Done before moving to. Accordingly, the interference protrusion 54 and the side interference rib 44 function as first and second unauthorized attachment preventing interference portions that prevent the engaged portion 38 from engaging with the check claw portion 36A in a non-returning manner. To do. Therefore, even if an operator overlooks an insufficient insertion state or an inappropriate inclination insertion state of the support shaft 24, it is effectively prevented that the PCS sensor 12 is mistakenly recognized as being properly attached to the bracket 16. be able to.

  In the description of each of the above-described embodiments, only an inappropriate inclination insertion state in which the PCS sensor 12 is inclined leftward with respect to the bracket 16 has been described. However, even in the case of an inappropriate inclination insertion situation in which the PCS sensor 12 is inclined to the right with respect to the bracket 16, the same effects as the above-described effects can be obtained except that the left and right are reversed.

  Although the present invention has been described in detail with respect to specific embodiments, the present invention is not limited to the above-described embodiments, and various other embodiments are possible within the scope of the present invention. This will be apparent to those skilled in the art.

  For example, in each of the above-described embodiments, the central interference rib 40 and the side interference ribs 44 and 50 have a pivot radius when the PCS sensor 12 as the vehicle front information acquisition sensor is pivoted around the support shaft 24. Interferes with the largest part. However, the interference part for preventing improper attachment may be provided so as to interfere with a part other than the part having the largest pivot radius.

  In addition, a part of the configuration of the first to fifth embodiments described above may be omitted. For example, one of the center interference rib 40 and the side interference rib 44 in the first embodiment may be omitted. Moreover, like the combination of the structure of the above-mentioned 2nd and 4th embodiment, the structure of the above-mentioned 1st thru | or 5th embodiment may be combined and implemented in arbitrary combinations.

  Further, in each of the above-described embodiments, the structures of the interference portions for preventing unauthorized attachment on both sides of the guide portion 26 are the same. However, the structures of the interference parts for preventing improper attachment on both sides of the guide part 26 may be different from each other.

  In the first and fifth embodiments described above, the side interference ribs 44 are formed integrally with the outer leg portions 42B of the corresponding engaged portions 42. However, the side interference ribs 44 may be formed integrally with the inner leg portions of the corresponding engaged portions 42.

  In the second, third and fifth embodiments described above, the central interference rib 40 in the first embodiment is not provided. However, the central interference rib 40 may be provided in any of the second, third, and fifth embodiments.

  DESCRIPTION OF SYMBOLS 10 ... PCS sensor apparatus, 12 ... PCS sensor, 14 ... Windshield, 16 ... Bracket, 16G ... Receiving groove, 24 ... Support shaft, 40 ... Center interference rib, 44 ... Side part interference rib, 48 ... Improper attachment prevention structure 50 ... side interference ribs 52, 54 ... interference protrusions

Claims (9)

In the vehicle front information acquisition device, comprising: a vehicle front information acquisition sensor; and a bracket that is fixed to the inner surface of the windshield and holds the vehicle front information acquisition sensor.
The vehicle front information acquisition sensor has a support shaft protruding outward, and the bracket has a receiving groove for receiving the support shaft,
The vehicle front information acquisition sensor is inserted into the receiving groove up to a preset insertion position with the support shaft tilted within a preset angle range with respect to the windshield, and around the support shaft. A check engagement member provided at one of the vehicle front information acquisition sensor and the bracket is pivoted to approach the windshield, and a latch provided at the other of the vehicle front information acquisition sensor and the bracket. By being engaged with a joint member, it is configured to be attached to the bracket at a preset attachment position,
At least one of the vehicle front information acquisition sensor and the bracket has the vehicle front information acquisition sensor around the support shaft in a state in which the support shaft is not inserted into the receiving groove until a preset insertion position. For preventing improper attachment when the non-reverse engaging member and the engaged member are prevented from engaging by interfering with the other of the vehicle front information acquisition sensor and the bracket when pivoted to approach the glass. Having an interference part,
Vehicle forward information acquisition device. In the vehicle forward information acquisition device according to claim 1,
The support shafts are provided on both sides near one end of the vehicle front information acquisition sensor, and the two support shafts are aligned with each other along the one end,
In the state where the two support shafts are not inserted into the receiving groove to the preset insertion position, the vehicle front information acquisition sensor is placed on the windshield around the support shaft. The first improper attachment prevention that prevents the non-engaging engagement member and the engaged member from engaging with each other by interfering with the other of the vehicle front information acquisition sensor and the bracket when pivoted to approach. Including interference part for
Vehicle forward information acquisition device. In the vehicle forward information acquisition device according to claim 1,
The support shafts are provided on both sides near one end of the vehicle front information acquisition sensor, and the two support shafts are aligned with each other along the one end,
The vehicle front information acquisition sensor is supported by the vehicle front information acquisition sensor in a state where one support shaft is inserted into the receiving groove up to a preset insertion position and the other support shaft is not inserted into the reception groove up to a preset insertion position. When pivoted to approach the windshield around an axis, the non-return engaging member and the engaged member are engaged by interfering with the other of the vehicle front information acquisition sensor and the bracket. Including a second tamper-proof interference section to block,
Vehicle forward information acquisition device.   3. The vehicle forward information acquisition device according to claim 2, wherein the first improper attachment preventing interference portion of the vehicle forward information acquisition sensor is pivoted around the support shaft. The vehicle forward information acquisition device provided in the bracket so as to interfere with a portion having the largest pivot radius.   The vehicle front information acquisition device according to claim 2, wherein a pair of first unauthorized attachment preventing engagement portions spaced apart along a direction in which the two support shafts are aligned with each other are provided. Information acquisition device.   The vehicle front information acquisition device according to claim 3, wherein a pair of second unauthorized attachment preventing engagement portions spaced apart along a direction in which the two support shafts are aligned with each other are provided. Information acquisition device.   The vehicle forward information acquisition device according to any one of claims 2 to 5, wherein the vehicle forward information acquisition sensor has a guided portion at a portion where the pivot radius is the largest, and the bracket is the vehicle forward information. When the acquisition sensor is pivoted to approach the windshield around the support shaft, the acquisition sensor has a guide portion that guides the guided portion, and the first improper attachment preventing interference portion includes the guide portion and A vehicle front information acquisition device provided integrally.   The vehicle forward information acquisition device according to claim 2 or 6, wherein the bracket has a pair of attachment portions for attaching a cover that covers the vehicle forward information acquisition sensor to the bracket, for preventing the second unauthorized attachment. The interference unit is a vehicle front information acquisition device provided integrally with the mounting unit. 9. The vehicle forward information acquisition device according to claim 1, wherein when the support shaft is inserted into the receiving groove to the preset insertion position, the vehicle forward information acquisition sensor is When the front glass is not tilted within the preset angle range, the outer peripheral surface of the support shaft interferes with the wall surface of the receiving groove, so that the support shaft is in the preset insertion position. A vehicle forward information acquisition device configured to be prevented from being moved up to.

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