WO2016009625A1 - Sensor mounting device for vehicle, and distance detector adapted for use in vehicle and provided with said sensor mounting device - Google Patents

Abstract

A sensor mounting device (100) for a vehicle is provided with: an inner member (10) having an inner cylinder section (11) which receives a sensor (30), the inner member (10) also having an annular section (12) which holds the sensor and which has an inner opening (12a) formed therein, the inner member (10) further having a sensor affixation section (13); and an outer member (20) having an outer cylinder section (21) which receives the inner member, the outer member (20) also having a flange section (22) which holds the annular section, has an outer opening (22a) formed therein, and has an application surface (22b) formed on one axial end side of the flange section (22), the application surface (22b) being adapted to be applied and affixed to the inner surface (2b) of the mounting section (2). Engagement sections (14A, 14R1, 14R2, 24A, 24R1, 24R2) for engaging the inner member and the outer member with each other while the inner member is inserted from one axial end side into the outer cylinder section of the outer member and while the annular section of the inner member is supported by the flange section of the outer member are provided between the inner member and the outer member. The sensor can be mounted to the mounting section on the vehicle body side at a predetermined mounting position by the sensor affixation section and the engagement section.

Description

VEHICLE SENSOR MOUNTING DEVICE AND VEHICLE DISTANCE DETECTOR HAVING THE SAME Cross-reference of related applications

This application is based on Japanese Application No. 2014-144826 filed on July 15, 2014, the contents of which are incorporated herein by reference.

The present disclosure relates to a vehicle sensor mounting tool for mounting, for example, a vehicle ultrasonic sensor used in an obstacle detection apparatus on a vehicle body, and a vehicle distance detector mounted on the vehicle body.

In recent vehicles (for example, automobiles), for example, an obstacle detection device called “clearance sonar” is provided to assist driving during parking. This device attaches a predetermined number of ultrasonic sensors to the front and rear bumpers of the vehicle (for example, two on the front bumper and four on the rear bumper), and the ultrasonic waves transmitted from each ultrasonic sensor hit the obstacle. By detecting the time to return, the distance between the vehicle and the obstacle is measured. When the distance becomes smaller than the set value, the driver is notified by voice or the like.

To attach the ultrasonic sensor to the bumper, as in Patent Document 1, the ultrasonic sensor is accommodated in the cylindrical holding portion of the fixing member, and the tip of the ultrasonic sensor is inserted into the through hole formed in the bumper. In this state, there is a method (attachment method) in which the ring-shaped fixing portion of the fixing member is attached and fixed to the inner surface of the bumper. And in patent document 1, in such an affixing system, the mask member is coated with the same color as the bumper by covering the peripheral portion of the through hole formed in the bumper with a mask member different from the fixing member. This improves the design of the through hole.

By the way, since both the fixing member and the mask member of Patent Document 1 are fixed to the inner side surface or the through hole of the bumper having a curved shape, a flexible material (elastic deformation of rubber or the like having good followability / following property to the curved shape) Possible materials) are recommended. In general synthetic resin materials and the like, a flexible material having good followability and followability with respect to a curved shape may be inferior in strength and hardness for holding a sensor and fixability at the time of painting. On the other hand, a hard material excellent in strength and hardness for holding the sensor and fixability at the time of painting tends to be inferior in followability and followability with respect to the curved shape. Therefore, it may be necessary to use expensive materials in order to simultaneously establish the following / following properties, strength / hardness, and fixability at the time of painting, or to consider changing the materials whenever the vehicle type or specifications change. There is a demand for quality improvement through further improvements.

JP 2006-298010 A

The problem of the present disclosure is that it has good followability and followability to the curved shape when pasted to the mounting part on the vehicle body side, has excellent strength and hardness to hold the sensor, and has the same color and system as the mounting part on the vehicle body side It is an object of the present invention to provide a vehicle sensor mounting tool that is excellent in fixability at the time of painting on a color, and a vehicle distance detector equipped with such a vehicle sensor mounting tool.

In order to solve the above-described problem, a vehicle sensor mounting tool according to one aspect of the present disclosure accommodates a distance detection sensor, and a front end portion (for example, a sensor main body) of the sensor is mounted on a vehicle body side (for example, A vehicle sensor mounting tool that is attached to and fixed to the inner surface of the mounting portion in a state of being inserted into a through-hole formed in a bumper), and an inner cylinder portion that houses the sensor, and an inner cylinder portion thereof An annular portion formed with an inner opening for receiving the sensor and receiving the sensor inserted from the other end side in the axial direction. An inner member (for example, a sensor holding member) having a sensor fixing portion for preventing relative movement in the axial direction and relative rotation around the axis of the sensor accommodated in the inner cylinder portion, and the inner member are accommodated. An outer cylinder part and an annular part of the inner member inserted from one end side in the axial direction formed so as to protrude in a flange shape on one end side in the axial direction of the outer cylinder part, and the front end part and the inner side of the sensor An outer member having an outer opening for exposing the annular portion of the member, and a flange portion formed on one end side in the axial direction for attaching and fixing to the inner surface of the attachment portion (for example, Vehicle body sticking member), between the inner member and the outer member, the inner member is inserted into the outer cylinder portion of the outer member from one end side in the axial direction, and the annular portion of the inner member is A locking portion for locking the inner member and the outer member is provided in a state supported by the flange portion of the outer member, and the mounting portion on the vehicle body side is provided by the sensor fixing portion and the locking portion. The sensor to a predetermined mounting position Characterized in that it is securable.

According to such a vehicle sensor mounting tool, the outer member (for example, a vehicle body affixing member) that is attached and fixed to the mounting portion (for example, a bumper) on the vehicle body has a relatively good followability and followability with respect to the curved shape. It can be made of a flexible material. On the other hand, an inner member (for example, a sensor holding member) that receives and holds the sensor while receiving and fixing the sensor can be made of a relatively hard material having excellent strength and hardness for holding the sensor. In addition, because the inner member is made of hard material (especially FRP), the paint fixability is improved when the annular part is painted in the same color and system color as the mounting part on the vehicle body side to improve the design. Also excellent. Further, even when the inner member and the outer member are made of different materials, a locking portion is provided between the two members, and the sensor is fixed to the inner member by the sensor fixing portion. It is fixed at a predetermined mounting position with respect to the side mounting portion.

For example, the outer member is made of a fiber non-filling resin such as a flexible PBT (polybutylene terephthalate) resin mixed with an elastomer or a flexible PET (polyethylene terephthalate) resin, and the inner member is filled with glass fiber, carbon fiber, or the like. It can be composed of FRP (fiber reinforced resin) such as fiber reinforced PBT resin and fiber reinforced PET resin. It is considered that the fixability of the coating is improved by the fibers added to the FRP. Therefore, the outer member and the inner member can be constituted by the component composition of the material according to their characteristics, and the quality of the vehicle sensor mounting tool is significantly improved. As is clear from this example, the characteristics of the two components can be changed by using different materials for the outer member and the inner member even if they are the same component. FRP includes a fiber reinforced thermosetting resin and a fiber reinforced thermoplastic resin.

In addition to the ultrasonic sensor, the “sensor” includes a radio wave sensor, an optical sensor (including an infrared sensor, an ultraviolet sensor, a visible light sensor, etc.), a radiation sensor (including an X-ray sensor, a γ-ray sensor, etc.), etc. Including an electromagnetic wave reflection type sensor.

In the vehicle sensor mounting tool, the locking portion is a movement locking portion formed between the inner cylinder portion of the inner member and the outer cylinder portion of the outer member in order to prevent relative movement in the axial direction. And a rotation locking portion formed between the two to prevent relative rotation about the axis.

Thus, in order to prevent relative movement and relative rotation between the inner member and the outer member, the movement locking portion and the rotation locking portion are individually provided, so the inner member and the outer member are made of different materials. Even in a situation in which position fluctuations are likely to occur, fluctuations in the sensor mounting tool with respect to the vehicle body, and hence the sensor mounting position, can be easily avoided.

At that time, a plurality of movement locking portions and a plurality of sensor fixing portions are alternately arranged at predetermined angular intervals in the circumferential direction of the inner member.

This makes it possible to fix the position of the inner member and the sensor in the axial direction in a balanced manner in the circumferential direction and suppress the movement in the axial direction, so that the distance detection by the sensor can be performed with high accuracy.

For example, in the inner member, when the separation distance between the annular portion and the movement locking portion is L1, and the separation distance between the annular portion and the sensor fixing portion (for example, the engagement portion with respect to the sensor) is L2, L2 is greater than L1. Large (L1 <L2) is set.

This makes it possible to assemble the three members of the inner member, the outer member, and the sensor in a compact manner and prevent the sensor mounting tool from becoming large.

Further, the movement locking portion and the rotation locking portion are respectively arranged at a plurality of the same rotation angle positions in the circumferential direction of the inner cylinder portion and the outer cylinder portion.

Thus, it is possible to easily prevent relative movement between the inner member and the outer member by simply incorporating a plurality of movement locking portions and rotation locking portions. Moreover, even in situations where the inner member and the outer member are made of different materials and are likely to cause positional fluctuation, the movement locking function and the rotation locking function can be exhibited individually and substantially simultaneously in a superimposed manner. Variations in the sensor mounting tool with respect to the vehicle body, and hence the sensor mounting position, can be easily avoided.

Further, the sensor fixing portion of the inner member is formed so as to protrude from the annular portion along the axial direction, and has an insertion hole formed along the axial direction so as to straddle the flange portion and the outer cylinder portion (the bulging portion) of the outer member. By penetrating, it also serves as a rotation locking part.

Thus, when the sensor fixing portion also serves as the rotation locking portion, the relative rotation among the three members of the inner member, the outer member, and the sensor can be prevented simultaneously and at the same position by the sensor fixing portion.

The inner member is integrally formed of a harder FRP material than the outer member, and the annular portion is painted in the same color or the same color as the mounting portion on the vehicle body side.

In this way, the FRP material constituting the inner member is a hard material with excellent strength and hardness that holds the sensor, and also contains fibers such as glass as a reinforcing material and is excellent in fixability at the time of painting. The durability of the vehicle sensor mounting tool is improved. In addition, since it is only necessary to paint on the inner member (the annular portion) before being housed in the outer member, not on the entire vehicle sensor mounting tool, the amount of application can be saved.

Further, in order to solve the above-described problem, in the vehicle distance detector according to another aspect of the present disclosure, the inner member of the vehicle sensor mounting tool is an outer cylinder of the outer member from one end side in the axial direction. The sensor is inserted into the inner cylinder portion of the inner member from the other end side in the axial direction, and the affixing surface of the outer member is affixed to the inner surface of the mounting portion and attached to the vehicle body side And detecting a distance from the vehicle to an external object.

According to such a vehicle distance detector, the outer member (for example, a vehicle body sticking member) is made of a relatively flexible material having good followability and followability to a curved shape, while the inner member (for example, a sensor holding member). ) Is made of a relatively hard material that has excellent strength and hardness to hold the sensor, and also has excellent coating fixability, so that the sensor is fixed at a predetermined mounting position with respect to the mounting portion on the vehicle body side. A stable distance detection performance can be maintained.

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
BRIEF DESCRIPTION OF THE DRAWINGS Schematic explanatory drawing which illustrates the vehicle provided with the clearance sonar as a vehicle distance detector which concerns on embodiment. The top view of the clearance sonar of embodiment. The front view of the clearance sonar of embodiment. The bottom view of the clearance sonar of embodiment. The perspective view of the clearance sonar of embodiment. The disassembled perspective view of the clearance sonar of embodiment. The disassembled perspective view before the assembly of the vehicle sensor mounting tool according to the embodiment. The perspective view of the assembly state of the sensor mounting tool for vehicles of embodiment. IX-IX sectional view of FIG. XX sectional drawing of FIG. XI-XI cross-sectional perspective view of FIG.

Hereinafter, embodiments will be described with reference to examples shown in the drawings. As shown in FIGS. 1 and 3, the vehicle obstacle detection device 1 includes a plurality of clearance sonars 3 (vehicle distance detectors) mounted on front and rear bumpers 2 (mounting portions) of the vehicle, and a control unit. ECU (Electronic Control Unit) 4. Under predetermined conditions, ultrasonic waves are transmitted (oscillated) from the front end surface of the sensor body 31 forming the front end portion of the ultrasonic sensor 30 (sensor) provided in each clearance sonar 3 toward the outside of the vehicle. And the clearance sonar 3 is the distance from the vehicle to the obstacle 5 when the sensor main body 31 receives the ultrasonic wave (reflected wave) that hits the obstacle 5 (external object) in the ultrasonic transmission direction and returns. The ECU 4 notifies the driver by voice or the like according to the distance.

The outline of the ultrasonic sensor 30 will be described with reference to FIG. The ultrasonic sensor 30 includes a cylindrical sensor main body 31 that forms a tip portion, and a synthetic resin sensor case 32 that accommodates and supports the sensor main body 31. The front end surface of the sensor body 31 transmits (oscillates) ultrasonic waves toward the outside of the vehicle, and vibrates by receiving reflected waves that have returned upon hitting the obstacle 5 (see FIG. 1). The sensor case 32 includes a cylindrical portion 32a that houses and supports the sensor body 31, a rectangular body portion 32b that houses a circuit board (not shown) that is electrically connected to the sensor body 31, and a circuit thereof. The board has a connector portion 32c for electrically communicating with the ECU 4 (see FIG. 1).

Next, referring to FIGS. 2 to 4, a vehicle sensor mounting tool (hereinafter also simply referred to as a mounting tool) 100 for housing the ultrasonic sensor 30 and mounting it on the bumper 2, and a clearance sonar mounted on the bumper 2. The outline of 3 will be described. The mounting tool 100 accommodates the sensor holding member 10 (inner member) that houses the ultrasonic sensor 30 and the sensor holding member 10, and the sensor main body 31 is inserted into the through-hole 2 a formed in the bumper 2. And a vehicle body sticking member 20 (outer member) that is attached and fixed to the inner side surface 2b of the bumper 2. The clearance sonar 3 mounted on the bumper 2 by the mounting tool 100 detects the distance from the vehicle to the obstacle 5 by the ultrasonic sensor 30 as described above.

The structure of the wearing tool 100 will be specifically described with reference to FIGS. The mounting tool 100 includes a sensor holding member 10 injection-molded integrally with a GFRP (glass fiber reinforced resin) material, and a vehicle body sticking member 20 injection-molded integrally with a flexible PBT (polybutylene terephthalate) resin material mixed with an elastomer. Is provided. Since the GFRP material is a hard material in which glass fibers are filled as a reinforcing material in a PBT resin, and the flexible PBT resin material is a soft material in which fibers are not filled, the sensor holding member 10 is an ultrasonic sensor rather than the vehicle body sticking member 20. It is excellent in strength, hardness, etc. for holding 30 and also has excellent fixability at the time of painting because it contains glass fiber.

The sensor holding member 10 includes an inner cylinder portion 11 that accommodates the ultrasonic sensor 30, and an annular portion 12 that is formed in a flange shape on one end side (the upper end side in the embodiment) of the inner cylinder portion 11 in the axial direction. And a sensor fixing part 13 for fixing the ultrasonic sensor 30. The inner cylinder portion 11 houses the sensor main body 31 and the cylindrical portion 32a of the ultrasonic sensor 30 (see FIGS. 9 to 11). The annular portion 12 receives the sensor main body 31 of the ultrasonic sensor 30 inserted from the other end side in the axial direction (the lower end side in the embodiment), and also exposes the sensor main body 31 of the ultrasonic sensor 30. Is formed. The sensor fixing unit 13 prevents relative movement of the ultrasonic sensor 30 in the axial direction and relative rotation around the axial line (details will be described later).

On the other hand, the vehicle body affixing member 20 has an outer cylinder portion 21 that houses the sensor holding member 10 and a flange portion 22 that is formed in a flange shape on the upper end side in the axial direction of the outer cylinder portion 21. The flange portion 22 receives the annular portion 12 of the sensor holding member 10 inserted from the upper end side in the axial direction, and also exposes the sensor body 31 of the ultrasonic sensor 30 and the annular portion 12 of the sensor holding member 10. An affixing surface 22b for adhering and fixing to the inner side surface 2b of the bumper 2 is formed on the upper end side in the axial direction.

As shown in FIGS. 6 to 8, the inner cylinder portion 11 of the sensor holding member 10 is inserted into the outer cylinder portion 21 of the vehicle body affixing member 20 from the upper end side in the axial direction (via the outer opening 22a). 30 is inserted into the inner cylinder portion 11 of the sensor holding member 10 from the lower end side in the axial direction. Thereby, the inner cylinder part 11 accommodates the ultrasonic sensor 30 in a state where the sensor main body 31 is exposed from the inner opening 12a, and the outer cylinder part 21 exposes the annular part 12 and the sensor main body 31 from the outer opening 22a. And the inner cylinder part 11 and the ultrasonic sensor 30 are accommodated in the state which the collar part 22 supports the annular part 12 (refer FIG. 5, FIG. 9-FIG. 11).

In the assembled state of the clearance sonar 3 (FIG. 6) or the assembled state of the mounting tool 100 (FIGS. 7 and 8), both of the inner cylindrical portion 11 of the sensor holding member 10 and the outer cylindrical portion 21 of the vehicle body sticking member 20 are provided. Is provided (that will be described later in detail). Note that the clearance sonar 3 is configured such that the sticking surface 22b of the vehicle body sticking member 20 and the inner side surface 2b of the bumper 2 are bonded to each other with the sensor main body 31 of the ultrasonic sensor 30 inserted into the through hole 2a of the bumper 2. Are bonded to each other through the bonding member (see FIGS. 9 and 10).

At this time, in order to improve the design, the annular portion 12 of the sensor holding member 10 is painted in the same color (for example, gray) or the same system color (for example, silver gray or gradation) as the bumper 2. Since the sensor holding member 10 is a GFRP material containing glass fiber as a reinforcing material and has excellent fixability at the time of painting, the durability of the wearing tool 100 is improved. In addition, since it is only necessary to paint on the sensor holding member 10 (the annular portion 12) before being housed in the vehicle body pasting member 20, not on the entire mounting tool 100, the application amount can be saved.

7 and FIG. 8 and the cross-sectional views shown in FIGS. 9 to 11, the locking portion specifically prevents the inner cylinder portion 11 and the outer cylinder portion 21 from moving relative to each other in the axial direction. The portions 14A and 24A and the rotation locking portions 14R1, 14R2, 24R1, and 24R2 that prevent relative rotation around the axis are provided separately.

At a plurality of positions on the lower end portion of the inner cylinder portion 11 (in the embodiment, at two locations in the radial direction along the extension line of the connector portion 32c), the inner movement locking portion 14A is formed in a claw-like or hook-like shape from the outer peripheral surface. On the other hand, at the corresponding position of the lower end portion of the outer cylinder portion 21, an outer movement locking portion 24A is recessed on the inner peripheral surface. In the assembled state of the mounting tool 100, the inner movement locking portion 14A and the outer movement locking portion 24A are engaged with each other by elastic deformation and elastic return, and the inner cylinder portion 11 and the outer cylinder portion 21 in the axial direction. Relative movement is prevented (see FIGS. 9 to 11). The inner movement locking portion 14 </ b> A may be formed as a recess on the outer peripheral surface of the inner cylinder portion 11, and the outer movement locking portion 24 </ b> A may be formed as a protrusion on the inner peripheral surface of the outer cylinder portion 21.

Further, at a plurality of positions on the outer peripheral surface of the inner cylinder portion 11 (in the embodiment, two radial directions along the extension line of the connector portion 32c), the first inner rotation locking portion 14R1 is a rail along the axial direction. On the other hand, a first outer rotation locking portion 24R1 is formed in a groove shape along the axial direction at a corresponding position on the inner peripheral surface of the outer cylinder portion 21. In the assembled state of the mounting tool 100, the first inner rotation locking portion 14R1 and the first outer rotation locking portion 24R1 are engaged by being fitted to each other, and the axis of the inner cylinder portion 11 and the outer cylinder portion 21 is engaged. The relative rotation around is prevented (see FIGS. 9 to 11). The first inner rotation locking portion 14R1 is formed as a recess on the outer peripheral surface of the inner cylinder portion 11, and the first outer rotation locking portion 24R1 is formed as a protrusion on the inner peripheral surface of the outer cylinder portion 21. There may be.

Further, a plurality of positions on the outer peripheral surface of the inner cylinder portion 11 (in the embodiment, two positions in the radial direction perpendicular to the extension line of the connector portion 32c, in other words, 90 ° phase displacement from the first inner rotation locking portion 14R1). 2), the second inner rotation locking portion 14R2 is formed in a rail-like shape along the axial direction, while the second outer side is located at the corresponding position on the inner peripheral surface of the outer cylinder portion 21. The rotation locking portion 24R2 is formed in a groove shape along the axial direction. In the assembled state of the mounting tool 100, the second inner rotation locking portion 14R2 and the second outer rotation locking portion 24R2 are engaged by being fitted to each other, and the axis of the inner cylinder portion 11 and the outer cylinder portion 21 is engaged. The relative rotation around is prevented (see FIGS. 9 to 11). The second inner rotation locking portion 14R2 is formed as a concave portion on the outer peripheral surface of the inner cylinder portion 11, and the second outer rotation locking portion 24R2 is formed as a convex portion on the inner peripheral surface of the outer cylinder portion 21. There may be.

As is clear from the above description, the movement locking portions 14A and 24A and the first rotation locking portions 14R1 and 24R1 have a plurality of identical rotational angle positions (in the circumferential direction of the inner cylinder portion 11 and the outer cylinder portion 21). In the embodiment, they are respectively arranged at two locations in the radial direction along the extension line of the connector portion 32c. Thereby, the arrangement space of the plurality of movement locking portions and the rotation locking portion can be reduced, and these can be simply incorporated. In addition, since the movement locking function and the rotation locking function are exhibited individually and substantially simultaneously, fluctuation of the mounting position of the ultrasonic sensor 30 with respect to the bumper 2 can be easily avoided by a synergistic effect.

Next, the sensor fixing portion 13 of the sensor holding member 10 is formed so as to protrude along the axial direction from the annular portion 12 at a plurality of circumferential positions (in the embodiment, two radial directions perpendicular to the extension line of the connector portion 32c). It extends through the insertion hole 23 formed along the axial direction across the flange portion 22 of the vehicle body sticking member 20 and the bulging portion 21 a of the outer cylinder portion 21. A concave portion 13a (engagement portion) penetrating in a rectangular shape is formed at the distal end portion of the sensor fixing portion 13, and engages with a fixed portion 33 formed in the main body portion 32b of the sensor case 32. The fixed portion 33 is formed with a convex portion 33a (engagement portion) that bulges in a rectangular shape at a position corresponding to the concave portion 13a (in the embodiment, two opposite side surfaces of the rectangular main body portion 32b).

In the assembled state of the clearance sonar 3, the concave portion 13a and the convex portion 33a are engaged with each other by elastic deformation and elastic return, and prevent relative movement in the axial direction of the ultrasonic sensor 30 and relative rotation around the axial line (FIG. 6, see FIGS. 10 and 11). Further, in the assembled state of the mounting tool 100, the sensor fixing portion 13 passes through the insertion hole 23 formed along the axial direction, thereby causing relative rotation around the axis between the inner cylindrical portion 11 and the outer cylindrical portion 21. It also serves as a rotation locking portion for blocking (see FIGS. 7 and 8). In addition, the structure which a convex part is formed in the front-end | tip part of the sensor fixing | fixed part 13, and a recessed part is formed in the side surface of the main-body part 32b may be sufficient.

As described above, when the sensor holding member 10 and the vehicle body pasting member 20 are made of different materials, positional fluctuation (relative movement and relative rotation) is likely to occur between them. However, the movement locking portions 14A and 24A and the rotation locking portions 14R1, 14R2, 24R1, and 24R2 are individually provided on the inner cylinder portion 11 and the outer cylinder portion 21, and the ultrasonic sensor 30 is detected by the sensor fixing portion 13. Since it is fixed to the holding member 10, fluctuations in the mounting position of the mounting tool 100 and the ultrasonic sensor 30 with respect to the bumper 2 are easily avoided. Particularly in this embodiment, since the first rotation locking portions 14R1, 24R1 and the second rotation locking portions 14R2, 24R2 are provided, the deformation (torsional elastic deformation) of the vehicle body sticking member 20 made of flexible PBT resin. Can be prevented.

7 and 8, in the circumferential direction of the sensor holding member 10, a plurality (two in the embodiment) of movement locking portions 14A and a plurality (two in the embodiment) of sensor fixing portions 13 are provided. Are alternately arranged at predetermined angle intervals (90 ° in the embodiment). As a result, the axial holding positions of the sensor holding member 10 and the ultrasonic sensor 30 are arranged in a balanced manner in the circumferential direction, and movement in the axial direction can be suppressed, so that the distance detection by the ultrasonic sensor 30 can be performed with high accuracy.

Further, as shown in FIGS. 9 and 10, in the sensor holding member 10, the separation distance between the annular portion 12 and the movement locking portion 14 </ b> A is L <b> 1, and the separation distance between the annular portion 12 and the recess 13 a of the sensor fixing portion 13. Is set to L2, L2 is set larger than L1 (L1 <L2). As a result, the sensor holding member 10, the vehicle body sticking member 20, and the ultrasonic sensor 30 can be assembled in a compact manner, and the mounting tool 100 can be prevented from being enlarged.

By the way, as shown in FIGS. 6 to 8, there is a positioning projection at a single position in the circumferential direction on the outer peripheral surface of the cylindrical portion 32a (sensor case 32) (one place on the extension line of the connector portion 32c in the embodiment). While the portion 34P (sensor positioning portion) is formed in a rail shape along the axial direction, a positioning recess 14P (sensor positioning portion) is provided along the axial direction at a corresponding position on the inner peripheral surface of the inner cylinder portion 11. It is formed in a groove shape. In the assembled state of the clearance sonar 3, the positioning convex portion 34P and the positioning concave portion 14P are engaged with each other by being engaged with each other, and the positioning function in the circumferential direction of the ultrasonic sensor 30 with respect to the inner cylinder portion 11 (that is, the erroneous assembly preventing function). And has a detent function (see FIG. 9). In addition, the structure by which a positioning recessed part is formed in the outer peripheral surface of the cylindrical part 32a, and a positioning convex part is formed in the inner peripheral surface of the inner cylinder part 11 may be sufficient.

Also, as shown in FIG. 7, one first inner rotation locking portion 14R1 (first outer rotation locking portion 24R1) is the other first inner rotation locking portion 14R1 (first outer rotation locking portion). Since it is formed wider than the stopper portion 24R1), it has a function of positioning the inner cylinder portion 11 and the outer cylinder portion 21 in the circumferential direction (an erroneous assembly preventing function).

In the above description, only the clearance sonar 3 has been described, but the vehicle distance detector may be a distance detector other than the clearance sonar 3 (for example, an inter-vehicle distance detector). Further, the clearance sonar 3 may be attached to a vehicle body other than the bumper 2.

In the above description, only the ultrasonic sensor 30 is described, but the present invention is not limited to this. For example, an electromagnetic wave reflection type sensor such as a radio wave sensor, an optical sensor, or a radiation sensor may be used.

Although the present disclosure has been described with reference to the embodiments, it is understood that the present disclosure is not limited to the embodiments and structures. 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 (8)

1. While accommodating the distance detection sensor (30), the tip (31) of the sensor (30) is inserted into the through hole (2a) formed in the mounting portion (2) on the vehicle body side, A vehicle sensor mounting tool (100) attached and fixed to the inner surface (2b) of the mounting portion (2),
   The inner cylinder part (11) which accommodates the sensor (30), and the sensor (11) which is formed to protrude from one end side in the axial direction of the inner cylinder part (11) in a flange shape and is inserted from the other end side in the axial direction ( 30) and an annular part (12) in which an inner opening (12a) for exposing the tip part (31) of the sensor (30) is formed, and the sensor (30) accommodated in the inner cylinder part An inner member (10) having a sensor fixing portion (13) for preventing relative movement in the axial direction and relative rotation around the axial line;
   The outer cylinder part (21) which accommodates the inner member (10), and the inner member which is formed to protrude in a flange shape on one end side in the axial direction of the outer cylinder part (21) and is inserted from one end side in the axial direction While receiving the annular part (12) of (10), an outer opening (22a) for exposing the tip part (31) of the sensor (30) and the annular part (12) of the inner member (10) is formed. And an outer member (20) having a flange portion (22) formed on one end side in the axial direction with a sticking surface (22b) for sticking and fixing to the inner side surface (2b) of the attachment portion (2). With
   Between the inner member (10) and the outer member (20), the inner member (10) is inserted into the outer cylinder part (21) of the outer member (20) from one end side in the axial direction, In the state where the annular portion (12) of the inner member (10) is supported by the flange portion (22) of the outer member (20), the inner member (10) and the outer member (20) are locked. Stops (14A, 14R1, 14R2, 24A, 24R1, 24R2) are provided,
   A predetermined mounting position of the sensor (30) with respect to the mounting portion (2) on the vehicle body side by the sensor fixing portion (13) and the locking portions (14A, 14R1, 14R2, 24A, 24R1, 24R2). A vehicle sensor mounting tool (100) characterized in that it can be fixed to the vehicle.
2. The locking portion is interposed between the inner cylinder portion (11) of the inner member (10) and the outer cylinder portion (21) of the outer member (20) in order to prevent relative movement in the axial direction. 2. A movable locking portion (14A, 24A) formed and a rotation locking portion (14R1, 14R2, 24R1, 24R2) formed between the two to prevent relative rotation around the axis. A vehicle sensor mounting tool (100) according to claim 1.
3. 3. The vehicle according to claim 2, wherein a plurality of the movement locking portions (14 </ b> A) and a plurality of the sensor fixing portions (13) are alternately arranged at predetermined angular intervals in the circumferential direction of the inner member (10). Sensor mounting tool (100).
4. In the inner member (10), a separation distance between the annular portion (12) and the movement locking portion (14A) is L1, and a separation distance between the annular portion (12) and the sensor fixing portion (13) is set. The vehicle sensor mounting tool (100) according to claim 3, wherein when L2, L2 is set larger than L1 (L1 <L2).
5. The movement locking portions (14A, 24A) and the rotation locking portions (14R1, 24R1) are at a plurality of the same rotation angle positions in the circumferential direction of the inner cylinder portion (11) and the outer cylinder portion (21). The vehicle sensor mounting device (100) according to any one of claims 2 to 4, wherein the vehicle sensor mounting device (100) is disposed respectively.
6. The sensor fixing part (13) of the inner member (10) is formed to protrude from the annular part (12) along the axial direction, and the flange part (22) and the outer cylinder part (21) of the outer member (20). The vehicular sensor mounting device (100) according to any one of claims 2 to 5, which also serves as the rotation locking portion by penetrating through an insertion hole (23) formed along the axial direction. .
7. The inner member (10) is integrally formed of a harder FRP material than the outer member (20), and the annular portion (12) is painted in the same color or the same color as the mounting portion (2) on the vehicle body side. The vehicle sensor mounting tool (100) according to any one of claims 1 to 6.
8. The inner member (10) of the vehicle sensor mounting tool (100) according to any one of claims 1 to 7, wherein the inner member (10) extends from one end side in the axial direction to the outer cylindrical portion (21) of the outer member (20). The sensor (30) is inserted into the inner cylinder part (11) of the inner member (10) from the other end side in the axial direction, and the sticking surface (22b) of the outer member (20) is attached to the mounting member. Affixed to the inner surface (2b) of the part (2) and mounted on the vehicle body side,
   A vehicle distance detector (3) for detecting a distance from a vehicle to an external object (5).
   
   

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