WO2013161221A1

WO2013161221A1 - Vehicle ultrasonic sensor apparatus, and method for assembling vehicle ultrasonic sensor apparatus

Info

Publication number: WO2013161221A1
Application number: PCT/JP2013/002597
Authority: WO
Inventors: 兼史深堀; 忠夫清水; 直紀大角
Original assignee: 株式会社デンソー
Priority date: 2012-04-24
Filing date: 2013-04-17
Publication date: 2013-10-31
Also published as: JP2013228225A; CN104246533A; JP5849848B2; CN104246533B

Abstract

A vehicle ultrasonic sensor apparatus is provided with an ultrasonic sensor including an ultrasonic vibrator, and a holder member for housing the ultrasonic sensor. The ultrasonic sensor is mounted at a predetermined location of a vehicle bumper having an outer surface exposed to the outside and an inner surface positioned on the opposite side to the outer surface. At the predetermined location of the bumper, a bumper hole is provided in a front end direction from the inner surface toward the outer surface. The holder member has a holder member hole in the front end direction. A first portion of the ultrasonic sensor is housed in the bumper hole, while a second portion is housed in the holder member hole. The inner surface of the bumper includes a contact surface in contact with the holder member. The holder member is made of an elastic material and is integrated with an antivibration member which covers at least a part of a side surface of the ultrasonic sensor, with the second portion of the ultrasonic sensor housed in the holder member hole. The antivibration member includes a protruding end portion protruding beyond the contact surface of the bumper in the front end direction in such a manner as to be fitted in the bumper hole.

Description

Ultrasonic sensor device for vehicle and method for assembling ultrasonic sensor device for vehicle

Cross-reference of related applications

This disclosure is based on Japanese Patent Application No. 2012-099052 filed on April 24, 2012, the contents of which are incorporated herein by reference.

The present disclosure relates to a vehicle ultrasonic sensor device and a method for assembling the vehicle ultrasonic sensor device.

Conventionally, there has been 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.

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.

JP-T-2001-527480

The present disclosure has been made in view of the above points, and an object of the present disclosure is to obtain 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 another object of the present invention to provide an ultrasonic sensor device for a vehicle and an assembling method of the ultrasonic sensor device for a vehicle that facilitate the assembly.

The vehicle ultrasonic sensor device according to the first aspect of the present disclosure includes an ultrasonic sensor including an ultrasonic transducer, and a holding member that houses the ultrasonic sensor. The ultrasonic sensor is attached to a predetermined part of a bumper of a vehicle, and the bumper has an outer surface exposed to the outside and an inner surface located on the opposite side of the outer surface. A predetermined portion of the bumper is provided with a bumper hole penetrating the bumper in a tip direction that is a direction from the inner surface toward the outer surface. The first portion of the ultrasonic sensor is accommodated in the bumper hole. The inner surface of the bumper has a contact surface that contacts a surface of the holding member that faces the inner surface of the bumper. The holding member is provided with a holding member hole penetrating the holding member in the distal direction. The second portion of the ultrasonic sensor is accommodated in the holding member hole. The holding member is made of an elastic material, and is integrated with a vibration isolating member that covers at least a part of a side surface of the ultrasonic sensor in a state where the second portion of the ultrasonic sensor is accommodated in the holding member hole. The vibration isolating member has a protruding end protruding in the tip direction. The protruding end portion protrudes in the tip direction from the contact surface of the bumper so as to fit into the bumper hole.

According to the above-described ultrasonic sensor device for a vehicle, when an ultrasonic sensor is inserted into a through-hole provided in the vehicle bumper and is assembled to the vehicle bumper, the good appearance can be obtained and the assembly is also easy. Become.

According to another aspect of the present disclosure, a method of assembling the vehicle ultrasonic sensor device according to the first aspect on an inner surface of a bumper of the vehicle provided with a through-hole includes a protrusion of the vibration isolation member integrated with the holding member. The holding member is attached so that the end portion is fitted into the bumper hole, and the surface of the holding member facing the inner surface of the bumper is in contact with the inner surface of the bumper, and the vibration surface of the ultrasonic sensor is the bumper. The ultrasonic sensor is housed in the holding member hole until it is positioned substantially in the same plane as the outer surface of the holding member.

According to the method for assembling the vehicle ultrasonic sensor device described above, when an ultrasonic sensor is inserted into a through-hole provided in the vehicle bumper to be assembled to the vehicle bumper, the assembly is performed while obtaining a good appearance. Will also be easier.

The above and other objects, features and advantages of the present disclosure will become more apparent from the following detailed description with reference to the accompanying drawings. The drawing
FIG. 1 is a partial cross-sectional view illustrating a schematic configuration of an ultrasonic sensor device according to Embodiment 1 of the present disclosure. FIG. 2 is a schematic diagram showing the outer shape of the bumper outer surface, the vibration surface of the ultrasonic transducer, and the protruding end portion of the outer peripheral surface vibration isolation member. FIGS. 3A to 3C are schematic diagrams for explaining a method of assembling the ultrasonic sensor device to the vehicle bumper. FIG. 4 is a partial cross-sectional view illustrating a schematic configuration of the ultrasonic sensor device according to the second embodiment of the present disclosure. FIG. 5 is a partial cross-sectional view for explaining a retainer protruding end of the retainer according to the second embodiment.

Hereinafter, embodiments of the present disclosure 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 operates as the vehicle ultrasonic sensor device according to the present disclosure.

The ultrasonic sensor 10 includes an ultrasonic transducer 11 that transmits ultrasonic waves and receives ultrasonic waves reflected by an obstacle and a back surface vibration isolation member 12. In the present embodiment, the ultrasonic transducer 11 is provided by a microphone. The ultrasonic sensor 10 is assembled to a predetermined part of 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. Vehicle bumper 200 has an outer surface 200c exposed to the outside and an inner surface 200b located on the opposite side of outer surface 200c. Hereinafter, an extension line along a distance (bumper thickness) from the outer surface 200c of the bumper to the inner surface 200b at a predetermined portion of the bumper 200 to which the ultrasonic sensor 10 is attached is referred to as a reference axis. That is, if the outer surface 200c and the inner surface 200b of the bumper 200 are substantially parallel at a predetermined portion, the reference axis is orthogonal to the outer surface 200c and the inner surface 200b. Hereinafter, the direction toward the outside with respect to the vehicle along the reference axis is referred to as an outside direction, and the direction toward the inside with respect to the vehicle is referred to as an inside direction (or back side direction). Furthermore, since the direction from the inner surface 200b of the bumper toward the outer surface 200c is also the direction toward the end with respect to the vehicle, it is also referred to as the tip direction.

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 isolating member 12 is a vibration isolating 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 attached to an inner surface 200b of a vehicle bumper 200 provided with a through hole (hereinafter referred to as a bumper hole) 200a formed along a reference axis, and holds the ultrasonic sensor 10 in a predetermined position with respect to the vehicle bumper 200. It is a member to do. The retainer 20 functions as a holding member. 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 composed of a plate-like portion 20b that faces the inner surface 200b of the vehicle bumper 200 and a cylindrical portion 20c that protrudes inward along the reference axis from the plate-like portion 20b. A part of the ultrasonic sensor 10 is accommodated in a through hole (hereinafter, retainer hole 20a) provided in the cylindrical portion 20c along the reference axis. As shown in FIG. 1, in a state where the ultrasonic sensor 10 is attached to a predetermined part of the bumper 200 of the vehicle, a part (first part) is accommodated in the bumper hole 200 and the other part (second part) is a retainer. It is stored in the hole 20a. The retainer hole 20a functions as a holding member hole.

The central axis of the retainer hole 20a is orthogonal to the inner surface (hereinafter referred to as the bumper inner surface) 200b of the vehicle bumper 200. Further, the fitting direction of the protruding end portion 40a of the outer peripheral surface vibration-proofing member 40, which will be described later, into the bumper hole 200a is substantially parallel to the reference axis. Moreover, the attachment direction which is a direction which attaches the retainer 20 to the bumper 200 has faced the outer side direction (front-end | tip direction) along the reference axis.

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 20b 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 peripheral surface vibration-proof member 40 is a vibration-proof elastic body for reducing vibration generated in the ultrasonic vibrator 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 isolation 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, when the ultrasonic sensor 10 is housed in the retainer hole 20a, the outer peripheral surface vibration-proof member 40 suppresses vibrations on the side surface of the ultrasonic sensor 10. 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.

It should be noted that 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. That is, the vibration isolating member that covers the entire side surface of the ultrasonic sensor 10 or at least a part of the side surface is integrated with the retainer 20. 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-proof member 40 protrudes outward along the reference axis from the surface of the retainer 20 that contacts the vehicle bumper 200 so as to contact and fit the opening edge of the bumper hole 200a. Is provided. That is, it protrudes along the direction in which the retainer 20 is attached to the vehicle bumper 200. Hereinafter, of the inner surface 200b of the bumper 200, a surface that contacts the retainer 20 is referred to as a contact surface. The outer peripheral surface vibration isolation member 40 functions as a vibration isolation member.

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 in the mounting direction.

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

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

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 the present embodiment, the configuration in which the retainer 20 and the outer circumferential vibration isolating member 40 are integrally formed is shown, but the present invention is not necessarily limited thereto. 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 to 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 as described above is used by being fixed in a state where a part of the ultrasonic sensor 10 is disposed inside the bumper hole 200a so that sensing can be performed via the bumper hole 200a. . That is, the ultrasonic sensor device 100 can transmit and receive ultrasonic waves without using the vehicle bumper 200. 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 outer shape of the bumper outer surface 200c and the vibration surface 11a of the ultrasonic transducer 11 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 of 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 circumferential surface vibration-proof member 40 is inserted into the bumper hole 200a from the inner surface 200b of the vehicle bumper 200 in the outer direction (front end direction) along the reference axis (FIG. 3). (See (a)). At this time, since the protruding end 40a of the outer peripheral surface vibration-proof member 40 is elastically deformed, the protruding end 40a can be press-fitted toward the outer surface 200c of the vehicle bumper 200 in a state where the protruding end 40a is in contact with the inner wall of the bumper hole 200a.

Subsequently, until the aforementioned bumper contact surface of the retainer 20 contacts the bumper inner surface 200b of the vehicle bumper 200, the projecting end portion 40a is pushed into the bumper hole 200a in the outward direction (front end direction) along the reference axis. Then, the double-sided tape 30 adhered to the bumper contact surface is also adhered to the bumper inner surface 200b, and the retainer 20 is fixed to the vehicle bumper 200 (see FIG. 3B). The process so far corresponds to a holding member attaching process.

After fixing the retainer 20 to the vehicle bumper 200, 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. That is, the ultrasonic sensor 10 is inserted into the retainer hole 20a of the retainer 20 in the outward direction (front end direction) along the reference axis 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 an ultrasonic sensor accommodation process.

According to the above configuration, the retainer 20 is provided with the outer peripheral surface anti-vibration member 40 so as to fit into the bumper hole 200a. Therefore, the outer peripheral surface anti-vibration 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. That is, the ultrasonic sensor 10 can be inserted into the bumper hole 200a as it is, and positioning of the vehicle ultrasonic sensor device to the bumper 200 is facilitated.

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, since the outer peripheral surface vibration isolation member 40 protrudes from the bumper contact surface that contacts the vehicle bumper of the retainer 20, the outer side of the vehicle bumper 200 is in a state where the ultrasonic sensor 10 is housed in the retainer 20 attached to the vehicle bumper. From this, only the outer surface vibration isolator 40 and the ultrasonic sensor 10 can be seen in the region of the bumper hole 200a. Since the outer peripheral vibration isolation member 40 is generally provided so as to cover the periphery of the ultrasonic sensor 10, the outer appearance when the ultrasonic sensor can be accurately positioned and inserted into the bumper hole 200a is as follows. Similarly, a good appearance can be obtained.

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 disclosure is not limited to the above-described first embodiment, and the following second embodiment is also included in the technical scope of the present disclosure. 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, as with the ultrasonic sensor device 100. Therefore, the ultrasonic sensor device 101 also operates as a vehicle ultrasonic sensor device. 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 functions as a holding member protrusion. 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 shown, but the present invention is not necessarily limited thereto. For example, the idea of the present disclosure 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.

Although the present disclosure has been described based on an embodiment, it is understood that the present disclosure is not limited to the embodiment or the structure. The present disclosure includes various modifications and modifications within the equivalent range. In addition, various combinations and forms, as well as other combinations and forms including only one element, more or less, are within the scope and spirit of the present disclosure.

Claims

An ultrasonic sensor (10) comprising an ultrasonic transducer (11);
An ultrasonic sensor device for a vehicle comprising a holding member (20) for housing the ultrasonic sensor,
The ultrasonic sensor is attached to a predetermined part of a vehicle bumper (200),
The bumper has an outer surface (200c) exposed to the outside and an inner surface (200b) located on the opposite side of the outer surface,
A predetermined portion of the bumper is provided with a bumper hole (200a) penetrating the bumper in a tip direction that is a direction from the inner surface toward the outer surface,
A first portion of the ultrasonic sensor is received in the bumper hole;
The inner surface of the bumper has a contact surface in contact with the surface of the holding member that faces the inner surface of the bumper.
The holding member is provided with a holding member hole (20a) penetrating the holding member in the distal direction,
The second part of the ultrasonic sensor is accommodated in the holding member hole,
The holding member is made of an elastic material, and is integrated with a vibration isolating member (40) that covers at least a part of a side surface of the ultrasonic sensor in a state where the second portion of the ultrasonic sensor is accommodated in the holding member hole. And
The vibration isolation member has a protruding end (40a) protruding in the tip direction,
The ultrasonic sensor device for a vehicle, wherein the protruding end portion protrudes in the tip direction from the contact surface of the bumper so as to fit in the bumper hole.
2. The vehicle according to claim 1, wherein the holding member is integrated with a vibration isolating member that covers the entire side surface of the ultrasonic sensor in a state where the second portion of the ultrasonic sensor is accommodated in the holding member hole. Ultrasonic sensor device.
The holding member is
An elastic material having a lower elastic modulus than the elastic material of the vibration isolator,
A holding member protrusion (20d) protruding in the distal direction from the contact surface of the bumper so as to be fitted into the bumper hole;
The holding member protrusion is positioned closer to the contact surface of the bumper than the tip of the protruding end of the vibration isolator,
The ultrasonic sensor device for a vehicle according to claim 1, wherein the vibration isolation member covers a tip of a holding member protrusion of the holding member.
The vehicle ultrasonic sensor device according to any one of claims 1 to 3, wherein the vibration isolating member is integrally formed with the holding member.
The protruding end portion of the vibration isolating member is fitted into the bumper hole,
The vehicular ultrasonic sensor device according to any one of claims 1 to 4, wherein a tip of the protruding end portion is positioned substantially flush with an outer surface of the bumper in a state where the holding member is attached to the bumper.
A method for assembling a vehicle ultrasonic sensor device according to any one of claims 1 to 5, wherein the vehicle ultrasonic sensor device according to any one of claims 1 to 5 is assembled to an inner surface of a bumper of the vehicle provided with a through hole.
The protruding end portion of the vibration isolation member integrated with the holding member fits into the bumper hole, and the holding member is in contact with the inner surface of the bumper and the surface of the holding member facing the inner surface of the bumper. Attaching a member;
A method of assembling an ultrasonic sensor device for a vehicle, comprising: 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 bumper.