JP5849848B2 - Ultrasonic sensor device for vehicle and method for assembling ultrasonic sensor device for vehicle - Google Patents

Description

  The present invention relates to an ultrasonic sensor device for a vehicle and an assembling method thereof.

  2. Description of the Related Art Conventionally, there is known an ultrasonic sensor device that is assembled to a vehicle bumper having a through hole so that a sensor element can be sensed through the through hole.

  For example, in Patent Document 1, a holding member having a pipe part is attached to the inside of a vehicle bumper where a through hole is formed by bonding or the like, and then an ultrasonic sensor module is inserted into the pipe part of the holding member. Thus, a technique for assembling an ultrasonic sensor module to a vehicle bumper is disclosed. If it does in this way, even if a holding member is attached, since the external design of a vehicle bumper does not change, design nature does not fall.

  Furthermore, Patent Document 1 discloses that the ultrasonic sensor is inserted into the through-hole of the vehicle bumper until the head of the module of the ultrasonic sensor is positioned substantially flush with the outer surface of the vehicle bumper. Is also disclosed.

  In general, in order to limit the direction in which the ultrasonic wave is transmitted, a surface other than the surface in the direction to be sensed among a plurality of surfaces of the ultrasonic transducer provided in the ultrasonic sensor. Is known to be covered with a vibration isolating member that suppresses vibration.

JP-T-2001-527480

  However, in the technique disclosed in Patent Document 1, when the holding member is fixed to the bumper by bonding or the like, the holding member is fixed by bonding or the like while looking at the vehicle bumper of the portion where the through hole is formed from the outside. The center of the through hole of the vehicle bumper and the axis of the tube portion of the holding member are difficult to match. In addition, even if the ultrasonic sensor module is inserted into the holding member so that the center of the through hole is displaced from the axis of the tube portion of the holding member, a problem that it cannot be inserted into the through hole of the vehicle bumper is likely to occur.

  In order to obtain a good appearance, it is necessary to reduce the radial gap of the through hole when the ultrasonic sensor is inserted into the through hole. Further, when the ultrasonic sensor is covered with the vibration isolating member, it is necessary to reduce the gap between the through holes generated after the vibration isolating member is inserted into the through hole. However, the smaller the gap is, the smaller the allowable value of positional deviation between the center of the through hole of the vehicle bumper and the axis of the tube portion of the holding member is. Therefore, the assembly of the ultrasonic sensor module to the vehicle bumper is more It becomes difficult.

  The present invention has been made in view of the above-described conventional problems, and its object is to provide a good appearance when an ultrasonic sensor is inserted into a through-hole provided in a vehicle bumper and is assembled to the vehicle bumper. It is an object to provide an ultrasonic sensor device for a vehicle and an assembling method of the ultrasonic sensor device for a vehicle that facilitate assembly.

The ultrasonic sensor device for a vehicle according to the present invention is thick because the ultrasonic sensor (10) including the ultrasonic transducer (11) and the ultrasonic sensor are fitted on the back surface of the vehicle bumper (200). A vehicle ultrasonic sensor device (100) comprising a holding member (20) for receiving an ultrasonic sensor, a part of which is attached in contact with a portion provided with a bumper hole (200a) penetrating in the vertical direction. The holding member is formed with a penetrating hole and a holding member hole (20a) for accommodating the ultrasonic sensor . The holding member is made of an elastic body, and the ultrasonic sensor is provided in the holding member hole. An anti-vibration member (40) that covers the side surface of the ultrasonic sensor when housed is integrated, and the anti-vibration member comes from a bumper contact surface that contacts the vehicle bumper of the holding member so as to fit into the bumper hole. Projecting end (4 a), and the holding member is made of a material having a lower elastic modulus than that of the vibration isolating member, and the protruding end portion of the vibration isolating member from the bumper contact surface is fitted to the bumper hole. A holding member protrusion (20d) protruding in the tip direction is provided, and the holding member protrusion is positioned closer to the bumper contact surface than the tip of the protruding end of the vibration isolation member. Is characterized by covering the tip of the holding member protrusion of the holding member.

  According to this, since the vibration isolating member that fits into the bumper hole is integrated with the holding member, it is easy to position the holding member with respect to the bumper hole by fitting the vibration isolating member into the bumper hole. Can be done.

  Further, since the vibration isolating member is provided so as to cover the side surface of the ultrasonic sensor when the ultrasonic sensor is accommodated in the holding member hole, if the vibration isolating member is fitted into the bumper hole, the holding member is provided. The positions of the hole and the bumper hole are aligned. Therefore, if the ultrasonic sensor is accommodated in the holding member hole with the vibration isolating member fitted in the bumper hole, the ultrasonic sensor can be inserted into the bumper hole as it is. Positioning to the vehicle bumper becomes easy.

  Further, since the vibration isolating member is an elastic body and can be press-fitted unlike the rigid body, the fitting clearance required when positioning the holding member with respect to the bumper hole using the rigid body becomes unnecessary. Therefore, it is possible to prevent positional displacement corresponding to the fitting clearance.

  In addition, since the vibration isolating member protrudes from the bumper contact surface of the holding member that contacts the vehicle bumper, when the ultrasonic sensor is housed in the holding member attached to the vehicle bumper, the bumper hole is formed from the outside of the vehicle bumper. Only the vibration-proof member and the ultrasonic sensor can be seen in this area. The vibration isolator is generally provided so as to cover the periphery of the ultrasonic sensor, so that the external appearance is as good as that when the ultrasonic sensor can be accurately positioned and inserted into the bumper hole. Can be obtained.

1 is a partial cross-sectional view illustrating a schematic configuration of an ultrasonic sensor device 100 according to a first embodiment. FIG. 4 is a schematic diagram showing outer shapes of a bumper outer surface 200c, a vibration surface 11a of the ultrasonic transducer 11, and a protruding end portion 40a of the outer peripheral surface vibration-proof member 40. (A)-(d) is a schematic diagram for demonstrating the assembly method of the ultrasonic sensor apparatus 100 with respect to the vehicle bumper 200. FIG. 6 is a partial cross-sectional view illustrating a schematic configuration of an ultrasonic sensor device 101 according to Embodiment 2. FIG. It is a fragmentary sectional view for demonstrating the retainer protrusion 20d of the retainer 20 of Embodiment 2. FIG.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(Embodiment 1)
FIG. 1 is a partial cross-sectional view illustrating a schematic configuration of an ultrasonic sensor device 100 according to the first embodiment. As shown in FIG. 1, the ultrasonic sensor device 100 includes an ultrasonic sensor 10, a retainer 20, a double-sided tape 30, an outer peripheral surface vibration isolation member 40, and a case 50. The ultrasonic sensor device 100 corresponds to the vehicle ultrasonic sensor device of the claims.

  The ultrasonic sensor 10 includes an ultrasonic transducer (here, referred to as a microphone) 11 and a back vibration isolator 12 that transmit ultrasonic waves and receive ultrasonic waves reflected by an obstacle. The ultrasonic sensor 10 is assembled to the vehicle bumper 200 and used as, for example, a back sonar or a corner sonar. The ultrasonic sensor 10 may be configured using a known sensor.

  For example, it is assumed that the housing of the microphone 11 is formed of a member made conductive by forming a conductive film on the surface of a metal material or an insulating material. In the present embodiment, as an example, it is assumed that the housing of the microphone 11 is formed of aluminum, and the vibration surface 11a is circular.

  The back vibration isolation member 12 is a vibration-proof elastic body for reducing vibration generated in the microphone 11. As the back vibration isolator 12, for example, rubber such as silicon rubber may be used. The back vibration isolating member 12 is bonded to the ultrasonic sensor 10 with, for example, a silicon-based adhesive so as to cover the surface of the microphone 11 opposite to the vibration surface 10a.

  The retainer 20 is a member that is attached to the inner (rear side) surface of the vehicle bumper 200 provided with a through hole (hereinafter referred to as a bumper hole) 200 a and holds the ultrasonic sensor 10 in a predetermined position with respect to the vehicle bumper 200. . The retainer 20 corresponds to a holding member in claims. The retainer 20 is formed of a material having a lower elastic modulus than the outer peripheral surface vibration-proof member 40. For example, the retainer 20 may be formed of a resin such as polybutylene terephthalate (PBT).

  The retainer 20 is roughly divided into a plate-like portion 20b that faces the inner surface of the vehicle bumper 200, and a cylindrical portion 20c that protrudes from the plate-like portion 20b in the direction opposite to the mounting direction. The ultrasonic sensor 10 is accommodated in a through hole (hereinafter, retainer hole 20a) of the cylindrical portion 20c. The retainer hole 20a corresponds to the holding member hole in the claims.

  The attachment direction here refers to a direction in which the central axis of the retainer hole 20a is orthogonal to the inner surface (hereinafter referred to as bumper inner surface) 200b of the vehicle bumper 200, or a protruding end portion 40a of the outer peripheral surface vibration isolation member 40 described later. This can be paraphrased as the fitting direction of the bumper hole 200a.

  The double-sided tape 30 is a fixing member for fixing the retainer 20 to the vehicle bumper 200. For example, the double-sided tape 30 may be configured to be bonded in advance to the surface of the plate-like portion of the retainer 20 that faces the bumper inner surface 200b of the vehicle bumper 200 in advance.

  In addition, in this embodiment, although the structure which fixes the retainer 20 to the vehicle bumper 200 using the double-sided tape 30 is shown, it does not necessarily restrict to this. For example, in addition to the double-sided tape, the retainer 20 may be fixed to the vehicle bumper 200 with an adhesive or the like, or the retainer 20 may be fixed to the vehicle bumper 200 by welding or spray bonding.

  The outer circumferential surface vibration isolation member 40 is a vibration-proof elastic body for reducing vibration generated in the ultrasonic transducer 11 of the ultrasonic sensor 10. As the outer peripheral surface vibration-proofing member 40, for example, rubber such as silicon rubber may be used. In addition, as the outer peripheral surface anti-vibration member 40, the same material as the back surface anti-vibration member 12 may be used, or a different material may be used.

  The outer peripheral surface vibration-proof member 40 is integrally formed with the retainer 20 (for example, insert molding or two-color molding) on the inner peripheral surface of the retainer hole 20a. More specifically, the outer peripheral surface vibration isolation member 40 is provided so as to cover the outer periphery (in other words, the side surface) in the radial direction of the retainer hole 20a in the microphone 11 when the ultrasonic sensor 10 is accommodated in the retainer hole 20a. .

  Thereby, the outer peripheral surface vibration isolator 40 suppresses the vibration of the side surface of the ultrasonic sensor 10 when the ultrasonic sensor 10 is accommodated in the retainer hole 20a. In addition, for the purpose of suppressing vibration of the side surface of the ultrasonic sensor 10, the conventional technology has integrated a vibration isolating member such as silicon rubber on the side surface of the ultrasonic sensor 10 by bonding or the like. The vibration isolating member is not integrated on the side surface of the ultrasonic sensor 10, and the outer peripheral surface vibration isolating member 40 is integrated on the retainer 20 side.

  The vibration isolating member may not be integrated over the entire side surface of the ultrasonic sensor 10, or the vibration isolating member may not be integrated with a part of the side surface of the ultrasonic sensor 10. In the case where the vibration isolating member is not integrated with a part of the side surface of the ultrasonic sensor 10, when the ultrasonic sensor 10 is housed in the retainer hole 20a, the retainer is located in a region corresponding to the vibration isolating member. About the 20 side area | region, it is good also as a structure which does not provide the outer peripheral surface vibration isolator 40. FIG.

  Further, the outer peripheral surface vibration isolation member 40 has a vehicle of the retainer 20 rather than a surface of the retainer 20 that contacts the vehicle bumper 200 (hereinafter referred to as a bumper contact surface) so as to come into contact with and fit to the opening edge of the bumper hole 200a. It is provided so as to protrude in the direction of attachment to the bumper 200. Therefore, the outer peripheral surface vibration isolation member 40 corresponds to the vibration isolation member of the claims.

  As an example, the hole shape and diameter of the retainer hole 20a and the hole shape and diameter of the bumper hole 200a are provided substantially the same, and the outer peripheral surface vibration isolation member 40 extends along the inner peripheral surface of the retainer hole 20a. The bumper extends from the contact surface of the bumper so as to protrude toward the mounting direction.

  A portion of the outer peripheral surface vibration-proofing member 40 that protrudes toward the mounting direction side from the bumper contact surface is hereinafter referred to as a protruding end portion 40a. In addition, the above-described bumper contact surface is, in other words, the surface of the plate-like portion of the retainer 20 that faces the inner surface of the vehicle bumper 200.

  More specifically, when the protruding end 40a is fitted in the bumper hole 200a and the retainer 20 is attached to the vehicle bumper 200, the outer peripheral surface vibration-proof member 40 has the tip of the protruding end 40a positioned outside the vehicle bumper. It is provided so as to be located in substantially the same plane as the surface (hereinafter referred to as bumper outer surface) 200c.

  In addition, with respect to the portion of the outer peripheral surface vibration isolating member 40 that is accommodated in the retainer hole 20a, the retainer hole 20a has a predetermined length on the side opposite to the mounting direction of the retainer hole 20a. It is provided halfway.

  In this embodiment, although the structure which integrally forms the retainer 20 and the outer peripheral surface vibration isolator 40 was shown, it does not necessarily restrict to this. For example, it is good also as a structure (henceforth the modification 1) which attaches the outer peripheral surface vibration isolator 40 to the retainer 20 with an adhesive etc. after shaping | molding of the retainer 20. FIG.

  The case 50 is a housing to which the ultrasonic sensor 10 is assembled. When roughly classified, the case 50 is roughly opened in a substantially box-shaped main body portion in which a circuit board (not shown) is accommodated and a bottom surface portion of the box body of the main body portion. It consists of an opening that protrudes in a cylindrical shape on the side and into which the ultrasonic sensor 10 is assembled. In FIG. 1, for convenience, only a part of the opening of the case 50 is illustrated.

  The ultrasonic sensor 10 is assembled into the case 50 by being lightly press-fitted into the opening of the case 50 with the back vibration-proof member 12 at the top. The case 50 has a structure that is fixed when the ultrasonic sensor 10 is inserted into the opening by a certain amount.

  For example, a configuration in which a concave portion or a convex portion is provided on the case 50 and the back vibration isolating member 12 so that the ultrasonic sensor 10 is fitted and fixed when a certain amount of the ultrasonic sensor 10 is inserted into the opening portion of the case 50. It is good. In addition, since the opening of the case 50 is provided at a certain depth, the ultrasonic sensor 10 may be fixed when a certain amount is inserted into the opening.

  As an example, the hole shape and the diameter of the outer periphery of the opening of the case 50 are provided in substantially the same shape and diameter as the retainer hole 20a. When the opening portion of the case 50 with the ultrasonic sensor 10 assembled is inserted into the retainer hole 20a, the outer peripheral surface vibration-proof member 40 in which the tip of the opening portion of the case 50 is provided partway through the retainer hole 20a. It is designed to be hooked and fixed.

  Moreover, the outer peripheral surface vibration-proof member 40 provided partway through the retainer hole 20a and the opening of the case 50 that is fixed when a certain amount of the ultrasonic sensor 10 is inserted are provided so as to satisfy the following conditions. It has been. Specifically, when the tip of the opening of the case 50 with the ultrasonic sensor 10 assembled is inserted into the retainer hole 20a of the retainer 20 fitted to the bumper hole 200a with the protruding end 40a fitted into the bumper hole 200a. In addition, the vibration surface 11a of the microphone 11 (that is, the vibration surface of the ultrasonic sensor 10) 11a is provided so as to be positioned substantially in the same plane as the bumper outer surface 200c.

  The ultrasonic sensor device 100 configured in this manner can sense the ultrasonic sensor 10 through the bumper hole 200a (can transmit and receive ultrasonic waves without using the vehicle bumper 200). A part of the bumper hole 200a is fixed and used in a state of being disposed inside the bumper hole 200a. In this fixed state, as described above, the bumper outer surface 200c and the vibration surface 11a of the ultrasonic transducer 11 are located on substantially the same plane.

  Further, the respective outer shapes are in a concentric relationship as shown in FIG. In the present embodiment, not only the bumper outer surface 200c and the vibration surface 11a of the ultrasonic transducer 11, but also the protruding end portion 40a of the outer peripheral surface vibration-proof member 40 is located on substantially the same plane, and the respective outer shapes are It is a concentric relationship.

  Next, a method for assembling the ultrasonic sensor device 100 to the vehicle bumper 200 will be described with reference to FIGS. 1 and 3A to 3C.

  First, the retainer 20 is first attached to the vehicle bumper 200 provided with the bumper hole 200a. Specifically, the front end of the protruding end portion 40a of the outer peripheral surface vibration-proof member 40 is inserted into the bumper hole 200a from the inner side (back side) of the vehicle bumper 200 (see FIG. 3A). At this time, since the projecting end 40a of the outer peripheral surface vibration-proof member 40 is elastically deformed, the projecting end 40a is press-fitted toward the outer side (surface side) of the vehicle bumper 200 in a state where the projecting end 40a is in contact with the inner wall of the bumper hole 200a. Can do.

  Subsequently, the double-sided tape 30 bonded to the bumper contact surface is pressed by pushing the protruding end portion 40a into the bumper hole 200a until the aforementioned bumper contact surface of the retainer 20 contacts the bumper inner surface 200b of the vehicle bumper 200. The retainer 20 is also bonded to the inner surface 200b and fixed to the vehicle bumper 200 (see FIG. 3B). The steps so far correspond to the holding member attaching step in the claims.

  After the retainer 20 is fixed to the vehicle bumper 200, the tip of the opening of the case 50 in which the ultrasonic sensor 10 is assembled is inserted into the retainer hole 20a of the retainer 20. That is, the ultrasonic sensor 10 is inserted into the retainer hole 20a of the retainer 20 with the vibration surface 11a at the head (see FIG. 3C).

  The tip of the opening of the case 50 is a retainer with the vehicle bumper outer surface 200c, the vibration surface 11a of the ultrasonic sensor 10 and the protruding end portion 40a of the outer peripheral surface vibration-proof member 40 positioned substantially in the same plane. The ultrasonic sensor 10 is held at a predetermined position by being hooked and fixed to the outer peripheral surface vibration isolation member 40 provided halfway through the hole 20a (see FIG. 1). That is, the ultrasonic sensor 10 is fixed to the vehicle bumper 200. This process corresponds to the ultrasonic sensor housing process in the claims.

  According to the above configuration, the retainer 20 is provided with the outer peripheral surface vibration isolation member 40 so as to be fitted into the bumper hole 200a. Therefore, the outer peripheral surface vibration isolation member 40 (specifically, the protruding end portion 40a) is attached to the retainer 20. By fitting the bumper hole 200a, the retainer 20 can be easily positioned with respect to the bumper hole 200a.

  Further, since the outer peripheral surface vibration isolation member 40 is provided so as to cover the outer periphery of the ultrasonic sensor 10 when the ultrasonic sensor 10 is accommodated in the retainer hole 20a, the outer peripheral surface vibration isolation member 40 is provided in the bumper hole 200a. If fitted, the center positions of the retainer hole 20a and the bumper hole 200a are aligned. Therefore, the ultrasonic sensor 10 can be easily inserted into the bumper hole 200a and fixed by accommodating the ultrasonic sensor 10 in the holding member hole in a state in which the outer peripheral surface vibration-proof member 40 is fitted in the bumper hole 200a. it can.

  Furthermore, since the outer peripheral surface vibration-proof member 40 is an elastic body and can be press-fitted into the bumper hole 200a unlike a rigid body, when the holding member is positioned relative to the bumper hole 200a using a new rigid body positioning structure. Necessary fitting clearance is not required. Moreover, the fitting clearance required when positioning the bumper hole 200a and the through hole of the holding member of the ultrasonic sensor 10 using a rigid jig such as a metal rod is also unnecessary. Therefore, it is possible to prevent positional displacement corresponding to the fitting clearance.

  Further, in the external appearance of the vehicle bumper 200, the bumper outer surface 200c, the ultrasonic sensor 10 (specifically, the vibration surface 11a), and the outer peripheral surface vibration isolation member 40 (specifically, the protruding end portion 40a) are located on substantially the same plane. In addition, it is possible to obtain a good appearance similar to the appearance when a general ultrasonic sensor in which a vibration isolating member is wound around the outer periphery of the bumper hole 200a can be accurately positioned and inserted.

(Embodiment 2)
The present invention is not limited to the above-described first embodiment, and the following second embodiment is also included in the technical scope of the present invention. Hereinafter, the second embodiment will be described with reference to the drawings. FIG. 4 is a partial cross-sectional view illustrating a schematic configuration of the ultrasonic sensor device 101 according to the second embodiment. For convenience of explanation, members having the same functions as those shown in the drawings used in the description of the first embodiment are given the same reference numerals, and descriptions thereof are omitted.

  As shown in FIG. 4, the ultrasonic sensor device 101 includes the ultrasonic sensor 10, the retainer 20, the double-sided tape 30, the outer peripheral surface vibration isolation member 40, and the case 50, similarly to the ultrasonic sensor device 100. Therefore, the ultrasonic sensor device 101 also corresponds to the vehicle ultrasonic sensor device of the claims. The ultrasonic sensor device 101 has the same configuration as that of the ultrasonic sensor device 100 according to the first embodiment, except that the retainer 20 and the outer peripheral surface vibration isolation member 40 are partially different in shape. Below, the shape of the retainer 20 and the outer peripheral surface vibration isolator 40 characteristic of the ultrasonic sensor device 101 will be described.

  The difference between the retainer 20 of the second embodiment and the retainer 20 of the first embodiment is that the retainer 20 is directed to the mounting direction of the retainer 20 rather than the bumper contact surface described above so as to contact and fit the opening edge of the bumper hole 200a. It has a protruding end portion (hereinafter referred to as a retainer protruding end) 20d that protrudes in a protruding manner (see FIG. 5). The retainer protrusion 20d corresponds to a holding member protrusion in the claims. Note that the retainer 20 of the second embodiment is also located on the outer peripheral side with respect to the outer peripheral surface vibration isolation member 40.

  The retainer protruding end 20d of the second embodiment is provided with a smaller protrusion from the bumper contact surface than the protruding end portion 40a of the outer peripheral surface vibration isolation member 40, and the tip is covered with the outer peripheral surface vibration isolation member 40. Yes.

  In other words, the retainer 20 of the second embodiment has the configuration of the first embodiment in at least a part of the region of the outer peripheral surface vibration isolation member 40 of the first embodiment excluding the region from the tip of the protruding end 40a to a predetermined length. It protrudes more toward the center of the retainer hole 20a.

  On the other hand, the outer peripheral surface vibration isolation member 40 is compared with the region of the outer peripheral surface vibration isolation member 40 of the first embodiment by the amount that the retainer 20 protrudes to the center side of the retainer hole 20a from the configuration of the first embodiment. It is provided by shaving.

  Further, the outer peripheral surface vibration-proof member 40 has a length in the radial direction of the scraped region and a length in the radial direction of the tip of the retainer protruding end 20d from the tip of the retainer protruding end 20d to the tip of the protruding end 40a. It will be provided for the length.

  The diameter of the inner peripheral surface of the cylindrical outer surface antivibration member 40 is the same as that of the first embodiment, and the outer periphery of the ultrasonic sensor 10 can be covered when the ultrasonic sensor 10 is stored in the retainer hole 20a. It is assumed that

  According to the above configuration, the outer peripheral surface vibration-proof member 40 (specifically, the protruding end portion 40a) can be fitted into the bumper hole 200a, and the retainer protruding end 20d of the retainer 20 can be fitted into the bumper hole 200a.

  When only the outer circumferential surface vibration isolating member 40 is fitted into the bumper hole 200a, the outer circumferential surface vibration isolating member 40 is an elastic body. Therefore, when a force is applied in the bumper contact surface direction, the outer circumferential surface vibration isolating member. There is a possibility that 40 will be bent and disengaged. On the other hand, when the retainer protruding end 20d is also fitted in the bumper hole 200a, the retainer 20 is made of a material having a lower elastic modulus than that of the outer peripheral surface vibration isolating member 40, so that a force is applied in the bumper contact surface direction. Even if it works, it is more difficult to bend and the fitting is difficult to come off.

  Also in the configuration of the second embodiment, the tip of the retainer protrusion 20d is covered with the outer peripheral surface vibration isolation member 40. Therefore, in the appearance of the vehicle bumper 200, the bumper outer surface 200c and the ultrasonic sensor 10 (specifically, the vibration surface 11a). ) And the outer peripheral surface vibration-proof member 40 (specifically, the protruding end portion 40a) are positioned on substantially the same plane. Therefore, it is possible to obtain a good appearance even with the configuration of the second embodiment.

  In the above-described embodiment, an example in which the shape of the retainer hole 20a and the bumper hole 200a is circular has been described, but the present invention is not necessarily limited thereto. For example, the idea of the present invention can be applied to other shapes such as a rectangular shape. When the shape of the retainer hole 20a or the bumper hole 200a is a shape other than a circle, the retainer 20 is perpendicular to the attaching direction of the retainer 20 when the ultrasonic sensor 10 is accommodated in the retainer hole 20a. What is necessary is just to set it as the structure which provides the outer peripheral surface anti-vibration member 40 so that the outer periphery of the said ultrasonic sensor 10 of the crossing direction may be covered.

  The present invention is not limited to the above-described embodiments, and various modifications can be made within the scope of the claims, and the technical means disclosed in different embodiments can be appropriately combined. Such embodiments are also included in the technical scope of the present invention.

10 Ultrasonic sensor, 11 Microphone (ultrasonic transducer), 20 Retainer (holding member), 20a Retainer hole (holding member hole, through hole of holding member), 40 Outer peripheral surface vibration-proofing member (vibration-proofing member), over 100 Sonic sensor device (vehicle ultrasonic sensor device), 200 vehicle bumper, 200a bumper hole (through hole of vehicle bumper)

Claims (4)

An ultrasonic sensor (10) comprising an ultrasonic transducer (11);
A part of the rear surface of the vehicle bumper (200) is attached in contact with a portion provided with a bumper hole (200a) penetrating in the thickness direction so that the ultrasonic sensor can be fitted. An ultrasonic sensor device (100) for a vehicle comprising a holding member (20) for accommodating a sound wave sensor,
The holding member is formed with a holding member hole (20a) that is a through hole and accommodates the ultrasonic sensor,
The holding member is made of an elastic body, and when the ultrasonic sensor is accommodated in the holding member hole, a vibration isolating member (40) that covers a side surface of the ultrasonic sensor is integrated.
The vibration-proof member has a protruding end (40a) that protrudes from a bumper contact surface that contacts the vehicle bumper of the holding member so as to fit into the bumper hole.
The holding member is
It is made of a material having a lower elastic modulus than the vibration isolating member,
A holding member protrusion (20d) that protrudes from the bumper contact surface toward the tip of the protruding end of the vibration isolating member so as to fit into the bumper hole;
The holding member protrusion has a tip positioned closer to the bumper contact surface than a tip of the protruding end of the vibration isolator,
The vibration isolator is
An ultrasonic sensor device for a vehicle, wherein the tip of the holding member protrusion of the holding member is covered. In claim 1,
An ultrasonic sensor device for vehicles, wherein a vibration isolating member for suppressing vibration of the side surface is not integrated with at least a part of the side surface of the ultrasonic sensor. In claim 1 or 2 ,
The anti-vibration member has a tip that is substantially flush with an outer surface of the vehicle bumper when the protruding end is fitted into the bumper hole and the holding member is attached to the vehicle bumper. An ultrasonic sensor device for a vehicle, wherein the ultrasonic sensor device is provided so as to be located in the vehicle. An assembly method for an ultrasonic sensor device for a vehicle, wherein the ultrasonic sensor device for a vehicle according to any one of claims 1 to 3 is assembled to a back surface of a vehicle bumper provided with a through hole.
A holding member attachment in which a portion of the vibration isolating member protruding toward the mounting direction of the vehicle bumper is fitted into the bumper hole, and a part of the holding member is attached to the back surface of the vehicle bumper. Process,
And an ultrasonic sensor housing step of housing the ultrasonic sensor in the holding member hole until a vibration surface (11a) of the ultrasonic sensor is positioned substantially flush with an outer surface of the vehicle bumper. Assembling method of ultrasonic sensor device for vehicle.

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