JP2010071956A - Mounting structure of sensing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a mounting structure of a sensing device, capable of being compatible with a wall member of a different thickness and improving design. <P>SOLUTION: The mounting structure of a sensing device is constructed by being mounted on a bumper through a holder in which the sensing device is installed on an inner surface of the bumper to perform sensing via a through-hole formed in the bumper. On the sensing device and the holder, there is provided a sliding mechanism structured to move the sensing device in only one direction from the inner surface side to the outer surface side of the bumper by application of an external force in the only one direction. A part of the sensing device is disposed in the through-hole and a head of the sensing device is made substantially flush with the outer surface of the bumper. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a sensor device mounting structure in which a sensor device is mounted on a wall member of a moving body such as a vehicle bumper.

  Conventionally, as a sensor device mounting structure in which a sensor device is mounted on a wall member of a moving body such as a vehicle bumper, sensing is performed through a through-hole formed in the wall member, as shown in Patent Document 1, for example. There is known a structure in which a sensor device is attached to a wall member via a holding portion provided on the inner surface of the wall member.

In Patent Document 1, a holding portion (holding portion) for fixing a module (sensor device) to a bumper is attached inside a bumper (wall member) provided with a hole (through hole). And in the state which assembled | attached the module to this holding | maintenance part, a part of module is arrange | positioned in a hole, and the head part of a module is arrange | positioned in the substantially same plane as the outer surface of a bumper. Thus, when the outer surface of the wall member and the head of the sensor device are substantially flush, it is preferable in terms of design.
JP-T-2001-527480

  By the way, in the case of, for example, a vehicle bumper as the wall member of the moving body, the thickness of the bumper varies depending on the vehicle type, or even the same bumper varies depending on the location. On the other hand, in the mounting structure of the sensor device shown in Patent Document 1, in order to make the positional relationship between the outer surface of the bumper and the head of the sensor device substantially the same, the holding unit, the sensor device, etc. Must be designed according to the bumper thickness.

  An object of this invention is to provide the attachment structure of the sensor apparatus which can respond to the wall member of different thickness and can improve the designability in view of the said problem.

  In order to achieve the above object, the invention according to claim 1 is configured such that the sensor device is provided via a holding portion provided on the inner surface of the wall member so as to sense through the through hole formed in the wall member of the moving body. The sensor device is attached to the wall member, and the sensor device and the holding portion are applied to the holding portion by applying an external force in one direction from the inner surface side to the outer surface side of the wall member along the through hole. A sliding mechanism is provided that allows the sensor device to move only in the one direction, a part of the sensor device is disposed in the through hole, and the head of the sensor device is substantially flush with the outer surface of the wall member. It is characterized by.

  In the present invention, by applying an external force to the sensor device and the holding portion that holds the sensor device on the wall member, the sensor is only in one direction from the inner surface side to the outer surface side of the wall member along the through hole. A sliding mechanism is provided that allows the apparatus to move freely. Thereby, at the time of attachment of the sensor apparatus to a wall member, a sensor apparatus can be slid to the said one direction by application of external force. With this sliding mechanism, the head of the sensor device can be substantially flush with the outer surface of the wall member regardless of the thickness of the wall member. The sliding mechanism is configured to allow the sensor device to move only in the one direction. Therefore, in the state where the sensor device is attached to the wall member, that is, in the attachment structure of the sensor device, the head of the sensor device exposed to the outer surface side of the wall member through the through hole is opposite to the one direction (hereinafter referred to as the following direction). Even if an external force is applied in the opposite direction), the sliding mechanism works so as not to move the sensor device (regulating the movement of the sensor device), and the position of the head of the sensor device is defined as the outer surface of the wall member. It can be held in a substantially flush state. Thus, according to this invention, it can respond to the wall member of different thickness, and can improve the designability. Further, the operation of making the head of the sensor device substantially flush with the outer surface of the wall member can be simplified by the sliding mechanism.

  As the sliding mechanism, for example, as described in claim 2, one of the sensor device and the holding portion is continuously provided with a number of engagement grooves along the moving direction of the sensor device, and the sensor device and the holding portion are On the other hand, when the external force is applied from the outer surface side to the inner surface side of the wall member along the through hole, the sensor device is held in position by being engaged with the wall surface constituting the engagement groove. It is preferable to have a configuration in which protrusions are provided.

  In the above configuration, the passage resistance of the protrusions with respect to the wall surface constituting the engaging groove is smaller in one direction along the through hole than in the opposite direction. Thereby, by the application of the external force in one direction, the protrusion can get over the wall surface forming the engagement groove, and the sensor device can be slid in one direction. And the position (head position) of the sensor device can be finely adjusted by the pitch of the engaging groove. Further, the movement of the sensor device can be restricted against the application of external force in the opposite direction.

  Next, in the invention according to claim 3, the sensor device is attached to the wall member via a holding portion provided on the inner surface of the wall member so as to sense through the through hole formed in the wall member of the moving body. The sensor device mounting structure includes a sliding mechanism that allows the sensor device and the holding portion to move in both directions along the through hole with respect to the holding portion by applying an external force in the direction along the through hole. A moving mechanism is provided, a part of the sensor device is disposed in the through hole, and the sensor device is fixed to the holding portion in a state where the head of the sensor device is substantially flush with the outer surface of the wall member. It is characterized by.

  In the present invention, the sensor device is moved in both directions along the through hole (from the inner surface side to the outer surface side and from the outer surface side to the inner surface side) by applying an external force to the sensor device and the holding portion that holds the sensor device on the wall member. A free sliding mechanism is provided. Thereby, at the time of attachment of the sensor apparatus to a wall member, a sensor apparatus can be slid to the said both directions by application of external force. With this sliding mechanism, the head of the sensor device can be substantially flush with the outer surface of the wall member regardless of the thickness of the wall member. The sensor device is fixed to the holding portion in a state where the head of the sensor device is substantially flush with the outer surface of the wall member. Therefore, in the state where the sensor device is attached to the wall member, that is, in the attachment structure of the sensor device, the head of the sensor device exposed to the outer surface side of the wall member through the through hole is opposite to the one direction (hereinafter referred to as the following direction). Even if an external force is applied in the opposite direction), the position of the head of the sensor device can be held substantially flush with the outer surface of the wall member. Thus, according to this invention, it can respond to the wall member of different thickness, and can improve the designability. Further, the operation of making the head of the sensor device substantially flush with the outer surface of the wall member can be simplified by the sliding mechanism.

  Further, according to the present invention, since the sensor device can be moved in both directions along the through-hole, a misalignment of the sensor device head with respect to the outer surface of the wall member is configured to move the sensor device only in one direction. It can be reduced and preferably eliminated.

  Furthermore, according to the present invention, since the sensor device can be moved in the opposite direction, it is possible to replace only the sensor device (for example, replacement due to a failure during use) without breaking the sliding mechanism.

  As the sliding mechanism, for example, as described in claim 4, one of the sensor device and the holding portion is continuously provided with a number of engagement grooves along the moving direction of the sensor device, and the sensor device and the holding portion are On the other hand, a protrusion inserted and disposed in the engagement groove is provided, the protrusion has a substantially wedge shape symmetrical with respect to its center in the moving direction of the sensor device, and the engagement groove has a shape corresponding to the protrusion. It is good to have the structure made.

  In the above configuration, the passage resistance of the protrusions with respect to the wall surface forming the engagement groove is substantially equal in both directions along the through hole. Thus, by applying an external force along the through-hole, the protrusion can get over the wall surface forming the engagement groove, and the sensor device can be slid in both directions. And the position (head position) of the sensor device can be finely adjusted by the pitch of the engaging groove.

  The sliding mechanism is forcibly moving the sensor device in response to an external force applied to the sensor device. Even when the sensor device is in a state before being fixed to the holding unit, the sliding mechanism Unless the application is made to the sensor device, the position of the head of the sensor device is held in a state substantially flush with the outer surface of the wall member. Therefore, the structure for fixing the sensor device to the holding portion is not particularly limited. For example, as described in claim 5, the holding portion may be pressed against the sensor device by the spring property of the clip member provided on the outer surface of the holding portion, and thereby the sensor device may be fixed to the holding portion. In addition to this, the sensor device may be fixed to the holding portion by fixing a lid member fixed to the rear end (end opposite to the head portion) of the sensor device to the holding portion. The sensor device may be fixed to the holding portion by providing a long hole along the through hole 12 in the sensor device and also providing a hole in the holding portion and screwing it through both holes. Further, it may be fixed by adhesion or welding.

  However, considering replacement of the sensor device, in the case of the clip member described above, only the sensor device is removed by removing the clip member and moving the sensor device from the outer surface side along the through hole to the inner surface side by applying an external force. Can be exchanged. That is, the replacement work can be simplified.

  As the sensor device, any sensor device that can be attached to the wall member via a holding portion provided on the inner surface of the wall member so as to sense through the through-hole formed in the wall member of the moving body can be adopted. . For example, as described in claim 6, an ultrasonic sensor device including an ultrasonic element that converts an electric signal into ultrasonic vibration or converts ultrasonic vibration into an electric signal can be employed. In addition, it is possible to employ a collision detection sensor that includes a piezoelectric element and is applied to a vehicle as a moving body.

  In addition, as described in claim 7, the above-described invention is suitable for at least one of a bumper, a molding, and a body as a wall member of a vehicle as a moving body.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In each of the following embodiments, a sensor device including an ultrasonic element is described as an example of an attachment structure that is attached to a vehicle as a moving body.
(First embodiment)
FIG. 1 is a perspective view showing the vicinity of a rear bumper of a vehicle to which a sensor device mounting structure according to an embodiment of the present invention is applied. FIG. 2 is a partial cross-sectional view illustrating an outline of a sensor device mounting structure according to the first embodiment. In FIG. 2, the holding member, the bumper, and the adhesive tape that fixes the holding member to the bumper are shown in cross section. FIG. 3 is an enlarged view of the periphery of the sliding mechanism in the sensor device mounting structure shown in FIG. In FIG. 3, among the protrusions and the locking grooves constituting the sliding mechanism, those located behind the drop-off prevention protrusions are indicated by broken lines. 4 and 5 are plan views showing a schematic configuration of the sensor device, FIG. 4 is a plan view seen from the head side, and FIG. 5 is a plan view seen from the side of the case. FIG. 6 is a plan view of the holding member as viewed from the insertion side of the sensor device. 7 is a cross-sectional view taken along line VII-VII shown in FIG. 8 is a cross-sectional view taken along line VIII-VIII shown in FIG. In the following, the thickness direction (the direction along the through hole 12) of the bumper 11 is simply the penetration direction, the direction substantially perpendicular to the penetration direction is simply the vertical direction, and the penetration direction from the inner surface 14 side of the bumper 11. The direction toward the outer surface 13 is simply referred to as a forward direction, and the direction from the outer surface 13 side to the inner surface 14 side of the bumper 11 is simply referred to as a rear direction.

  The sensor device is attached to bumpers on the front, rear, or four corners of the vehicle so that obstacles around the vehicle can be detected. In the present embodiment, as shown in FIG. 1, the sensor devices 30 are attached to a total of four locations, that is, two locations in the bumper 11 on the rear side of the vehicle 10 between the corner portions and the corner portions (vehicle rear surface).

  The bumper 11 is a resin molded product such as urethane or polypropylene, and corresponds to the wall member described in the claims. The bumper 11 has a through hole 12 formed from the outer surface 13 to the inner surface 14 at the mounting position of the sensor device 30, and the sensor device 30 is partially inserted into the through hole 12. It is arranged on the inner surface 14 side of the bumper 11.

  The sensor device 30 is configured as an ultrasonic sensor device, and includes a piezoelectric element (not shown) as an ultrasonic element. In the present embodiment, a sensing unit 31 having a piezoelectric element inside and a part thereof disposed in the through hole 12 of the bumper 11, a processing unit 32 having a circuit board (not shown) inside, and a circuit board (sensor) It has a connector part 33 for electrically connecting the device 30) and an external device.

  The sensing unit 31 is made of, for example, a microphone having a piezoelectric element made of a sintered body of piezoelectric ceramics such as PZT or barium titanate, or a microphone, for example, a silicon rubber, in order to suppress transmission of unnecessary vibration from the microphone to the surroundings. It is comprised from the anti-vibration member etc. which were provided in the circumference | surroundings except the vibration surface. The microphone has a structure in which a piezoelectric element is attached to the inner surface of the bottom surface portion of the bottomed cylindrical housing. The outer surface of the bottom surface portion of the housing serves as the vibration surface of the microphone and thus the head portion 34 of the sensor device 30. Yes. In addition, the sensing portion 31 has a substantially cylindrical shape whose outer shape corresponds to the circular cross section of the through-hole 12 of the bumper 11, and its outer diameter can be inserted into the through-hole 12, based on mounting tolerances and manufacturing errors. The diameter of the through hole 12 is set slightly smaller.

  The processing unit 32 includes a circuit board in a case made of, for example, resin. This circuit board is electrically connected to the above-described piezoelectric element, and outputs a drive signal for generating an ultrasonic wave by vibrating the piezoelectric element, or the ultrasonic wave is transmitted to the piezoelectric element and the piezoelectric element is distorted. In the case of occurrence of a voltage, a circuit for inputting a voltage signal generated by the piezoelectric effect is provided. Further, the circuit board is also electrically connected to the terminals constituting the connector portion 33, and is connected to a controller (not shown) via the terminals of the connector portion 33. This controller detects obstacles in the rear of the vehicle and in the corner portion. Is to be done.

  In the present embodiment, the outer shape of the case constituting the processing unit 32 is substantially rectangular parallelepiped, and the sensing unit 31 is provided on one surface 35 thereof. Moreover, the connector part 33 is provided in one of the four side surfaces adjacent to the surface 35 on which the sensing unit 31 is provided, and is opposed among the side surfaces excluding the surface 36 on which the connector part 33 is provided. Protrusions 38 constituting the sliding mechanism 70 are formed on the pair of side surfaces 37, respectively. The details of the protrusion 38 (sliding mechanism 70) will be described later. Further, a drop-off preventing projection 39 is formed on the side surface 37 with a height higher than that of the projection 38.

  The drop prevention protrusion 39 is subjected to an external force exceeding the ability to restrict the backward movement of the sensor device 30 by the sliding mechanism 70 in a state where the sensor device 30 is fixed to the bumper 11 via a holder 50 described later. Even when applied to the portion 34, the sensor device 30 is prevented from falling off the holder 50. In the present embodiment, as shown in FIGS. 2 and 3, the taper is such that the predetermined range in the penetration direction from the end portion (front end) on the head portion 34 side is farther from the side surface 37 in the vertical direction as it is farther from the head portion 34. And has a substantially wedge shape in which the rear end side is substantially perpendicular to the side surface 37. Further, in the penetrating direction, as shown in FIGS. 2 and 3, the drop-off prevention protrusion 39 is more than the drop-off prevention protrusion 59 on the holder 50 side that makes a pair with the sensor device 30 fixed to the bumper 11. It is a position which is a front side and has a gap between the drop-out preventing projection 59.

  The sensor device 30 configured as described above is fixed to the bumper 11 via a holder 50 provided on the inner surface 14 of the bumper 11, as shown in FIG.

  The holder 50 corresponds to a holding unit described in the claims, and is for holding the sensor device 30 at a predetermined position of the bumper 11. In this embodiment, the holder 50 of the resin molded product comprised as a member different from the bumper 11 is employ | adopted. The holder 50 has a bottom 51 having a substantially rectangular plane corresponding to the surface 35 on which the sensing unit 31 is provided in the case of the processing unit 32, and the sensor device 30 (sensing unit 31) at the approximate center of the bottom 51. A through hole 52 through which is inserted is provided. Further, flange portions 53 are respectively extended from end surfaces corresponding to the sides of the bottom 51 of the substantially rectangular plane in order to increase the fixed area with the bumper 11. A wall portion 54 having a predetermined height is provided substantially perpendicular to the bottom portion 51 so as to surround the through-hole 52 on the peripheral edge on the one surface of the bottom portion 51. When the sensor device 30 is attached to the holder 50, the wall portion 54 guides the sensor device 30 to a predetermined position as a guide, and accommodates the processing unit 32 of the sensor device 30 in the attached state. In the wall portion 54, an opening portion 56 for pulling out the connector portion 33 to the outside is provided in a wall portion 55 facing the surface 36 on which the connector portion 33 is provided in the case of the processing portion 32. Further, the wall portion 57 of the wall portion 54 facing the side surface 37 provided with the protrusion 38 and the drop-off prevention protrusion 39 in the case of the processing portion 32 is provided with an engagement groove that constitutes the sliding mechanism 70 together with the protrusion 38. 58 and a drop prevention protrusion 59 corresponding to the drop prevention protrusion 39 are formed. The details of the engagement groove 58 (sliding mechanism 70) will be described later.

  As shown in FIGS. 7 and 8, the wall portion 57 includes a thick portion 57a having a large thickness and a thin portion 57b which is sandwiched between two thick portions 57a and is thinner than the thick portion 57a. Thus, the outer surfaces of the thick portion 57a and the thin portion 57b are substantially flush with each other in the vertical direction, and the positions of the inner surfaces (opposite surfaces facing the sensor device 30) are different from each other. An engagement groove 58 is formed on the inner surface of the thick portion 57a, and a drop prevention protrusion 59 is formed on the inner surface of the thin portion 57b. As shown in FIGS. 3 and 7, in the vertical direction, the inner surface of the thick portion 57a and the apex position of the drop-off preventing projection 59 are substantially flush with each other.

  Further, the drop-off preventing projection 59 is paired with the drop-off preventing projection 39 provided on the sensor device 30 and slides in a state where the sensor device 30 is fixed to the bumper 11 via the holder 50 as described above. Even when an external force exceeding the ability to restrict the backward movement of the sensor device 30 by the mechanism 70 is applied to the head 34, the drop prevention protrusion 39 of the sensor device 30 stops and the sensor device 30 from the holder 50 is stopped. This is to prevent the falling off. In this embodiment, as shown in FIGS. 2, 3, and 7, the end (front end) on the bottom 51 side is substantially perpendicular to the inner surface of the wall 57 (thin portion 57 b), and a predetermined range in the penetrating direction from the rear end However, the closer to the bottom portion 51, the substantially wedge-shaped taper that is separated from the inner surface of the wall portion 57 in the vertical direction.

  Reference numeral 60 shown in FIGS. 6 and 7 denotes a pin hole for forming the drop-off preventing projection 59 when the holder 50 is formed by injection molding. Reference numeral 61 denotes a bottom 51 and a flange portion. The recessed part provided between 53 is shown. Due to the concave portion 61, the connecting portion between the bottom portion 51 and the flange portion 53 is thinned, and the flange portion 53 is easily deformed along the inner surface 14 of the bumper 11.

  In the holder 50 configured as described above, the center of the through hole 12 in the bumper 11 and the center of the through hole 52 in the holder 50 are approximately the same by the double-sided adhesive tape 71 disposed around the through hole 12 in the inner surface 14 of the bumper 11. In other words, it is fixed to the inner surface 14 of the bumper 11 so that the center of the through-hole 12 and the center of the head 34 (vibration surface) of the sensor device 30 substantially coincide with each other. The sensor device 30 is held at a predetermined position of the holder 50 by a sliding mechanism 70 described later, and can sense the bumper 11 formed with the through hole 12 through the through hole 12 (via the bumper 11). Part (a part of the sensing unit 31) is fixed in a state of being disposed inside the through-hole 12 so that an ultrasonic wave can be transmitted or received. In this fixed state, the outer surface 13 of the bumper 11 and the head portion 34 (the vibration surface of the microphone) of the sensor device 30 are substantially flush. Furthermore, a slight gap 15 exists between the wall surface (bumper 11) of the through hole 12 and the arrangement site (the outer peripheral surface of the sensing unit 31) in the through hole 12 of the sensor device 30. The clearance 15 is preferably as small as possible from the viewpoint of design, and may be configured without the clearance 15 depending on the configuration of the above-described vibration isolating member.

  Next, the sliding mechanism 70 that is a characteristic part of the mounting structure of the sensor device 30 according to the present embodiment will be described. As shown by a two-dot chain line in FIG. 2, the sliding mechanism 70 moves the sensor device 30 only in the forward direction with respect to the holder 50 fixed to the inner surface 14 of the bumper 11 by applying an external force in the forward direction. It is a mechanism provided in the sensor device 30 and the holder 50 so as to be flexible. As described above, in this embodiment, a large number of protrusions 38 are continuously provided along the penetrating direction on the side surface 37 of the case in the processing unit 32 of the sensor device 30, and the wall portion 57 (thick portion) in the holder 50 is provided. A large number of engagement grooves 58 are continuously provided on the inner surface of 57a) along the penetration direction.

  As shown in FIG. 3, the protrusion 38 has a tapered shape in which the distance from the head 34 side end (front end) in the penetrating direction to the protrusion vertex is separated from the side surface 37 in the vertical direction as the distance from the head 34 increases. It has a substantially wedge shape in which the length from the front end to the projection vertex in the penetrating direction is longer than the length from the rear end to the projection vertex.

  Further, the engaging groove 58 has a substantially wedge shape corresponding to the protrusion 38. That is, as shown in FIG. 3, the wall portion 57 (thick portion 57a) in the vertical direction as the distance from the bottom 51 (groove apex) from the end (front end) on the bottom 51 side in the penetrating direction to the bottom of the groove 51 increases. A substantially wedge shape in which the length from the front end to the groove lower point in the penetrating direction is longer than the length from the rear end to the groove lower point. It has become. Further, the length of the engaging groove group in which the engaging grooves 58 are continuously formed along the penetrating direction is set to be longer than the length of the protruding group of the protrusions 38 in the same direction. As shown in FIGS. 2 and 3, the protrusion 38 is inserted and disposed in the engagement groove 58 in the intermediate region of the engagement groove group in the penetrating direction.

  As described above, in the sliding mechanism 70 according to this embodiment, the passage resistance of the protrusion 38 with respect to the wall surface constituting the engagement groove 58 is smaller in the front direction than in the rear direction. Therefore, by applying an external force in the forward direction, the protrusion 38 can get over the wall surface forming the engagement groove 58, and the sensor device 30 can be slid in the forward direction. In addition, the position of the sensor device 30 (head 34) can be finely adjusted by the pitch of the engagement groove 58. Furthermore, the movement of the sensor device 30 can be restricted with respect to the application of an external force in the backward direction.

  Next, a procedure for attaching the sensor device 30 to the bumper 11 will be described. First, the holder 50 is fixed to the inner surface 14 of the bumper 11 with the double-sided adhesive tape 71. Next, an external force is applied in the forward direction (the direction indicated by the two-dot chain line shown in FIG. 2), and the sensor device 30 is connected to the rear end (the connection with the bottom portion 51) of the wall portion 54 of the holder 50 with the head portion 34 as the head. It is inserted into the accommodation area surrounded by the wall part 54 from the side opposite to the end. When the sensor device 30 is pushed forward by the application of the external force, the head 34 of the sensor device 30 passes through the through hole 52 in the bottom 51 of the holder 50. Further, the processing unit 32 of the sensor device 30 is guided by the wall portion 54 and inserted into the accommodation region, and the protrusion 38 of the sensor device 30 and the engagement groove 58 of the holder 50 that constitute the sliding mechanism 70. Are engaged with each other, and the protrusion 38, that is, the sensor device 30, slides forward while changing the engaging groove 58 to be engaged. Then, the sensor device 30 is slid forward by the sliding mechanism 70 until the head 34 of the sensor device 30 is substantially flush with the outer surface 13 of the bumper 11. Thereby, it can be set as the attachment structure of the above-mentioned sensor apparatus 30. FIG. In this embodiment, as shown by a two-dot chain line in FIG. 2, the member 100 for holding the head 34 of the sensor device 30 contacts the outer surface 13 of the bumper 11 so as to close the through hole 12. By arranging and applying an external force until the head 34 of the sensor device 30 comes into contact with the member 100 (until the sensor device 30 stops moving forward), the head 34 substantially faces the outer surface 13 of the bumper 11. I try to be one.

  Next, a characteristic effect of the mounting structure of the sensor device 30 according to the present embodiment will be described. First, a sliding mechanism 70 that allows the sensor device 30 to move only in the forward direction by applying an external force in the forward direction to the sensor device 30 and the holder 50 that holds the sensor device 30 at a predetermined position of the bumper 11. Is provided. Therefore, when the sensor device 30 is attached to the bumper 11, the sensor device 30 can be slid forward by applying a forward external force to the sensor device 30. Further, the protrusion 38 and the engaging groove 58 constituting the sliding mechanism 70 are continuously provided in the penetrating direction, and the length of the protrusion group of the sensor device 30 on the side to be moved is set in the penetrating direction. Therefore, the head 34 of the sensor device 30 can be substantially flush with the outer surface 13 of the bumper 11 regardless of the thickness of the bumper 11. In addition, as described above, the sliding mechanism 70 does not move the sensor device 30 even when a backward external force is applied to the head 34 of the sensor device 30 with the sensor device 30 attached to the bumper 11. Therefore, the position of the head 34 of the sensor device 30 can be held in a state substantially flush with the outer surface 13 of the bumper 11. Thus, according to the sliding mechanism 70 which concerns on this embodiment, it can respond to the bumper 11 of different thickness, and can improve the designability.

  In addition, since the sensor device 30 may be slid with respect to the holder 50 by applying an external force to the sensor device 30, the operation of making the head 34 of the sensor device 30 substantially flush with the outer surface 13 of the bumper 11 is simplified. Can be

  Further, as the sliding mechanism 70, the protrusions 38 are continuously provided on the sensor device 30, and the engaging grooves 58 are continuously provided on the holder 50. Therefore, the position of the sensor device 30 in the penetrating direction can be finely adjusted by the pitch of the engagement groove 58.

  The sliding mechanism 70 according to the present embodiment makes the sensor device 30 slidable only in the forward direction relative to the holder 50, and restricts the movement of the sensor device 30 with respect to the application of an external force in the rearward direction. It is configured. However, an external force is applied so as to push the rear end of the wall portion 54 of the holder 50 outward in the vertical direction (opposite to the sensor device 30), and the protrusion 38 and the engagement groove 58 of the sliding mechanism 70 are formed. It is also possible to replace only the sensor device 30 without breaking the sliding mechanism 70 by applying a backward external force to the sensor device 30 with the meshing released. Thereby, even if a failure occurs in the sensor device 30 during use by the user after being attached to the vehicle, only the sensor device 30 can be replaced.

(Second Embodiment)
Next, 2nd Embodiment of this invention is described based on FIGS. 9-12. FIG. 9 is a partial cross-sectional view illustrating an outline of a sensor device mounting structure according to the second embodiment. FIG. 10 is an enlarged view of the periphery of the sliding mechanism in the sensor device mounting structure shown in FIG. 9. Also in FIG. 10, among the projections and the locking grooves constituting the sliding mechanism, those located behind the drop-off prevention projections are indicated by broken lines. 11 and 12 are plan views showing a schematic configuration of the clip member, FIG. 11 is a plan view seen from the rear end side of the holder, and FIG. 12 is a plan view seen from the longitudinal end side.

  Since the mounting structure of the sensor device according to the second embodiment is often the same as that according to the first embodiment, the detailed description of the common parts will be omitted below, and different parts will be described mainly. In addition, the same code | symbol shall be provided to the element same as the element shown in 1st Embodiment.

  In the first embodiment, the example in which the sliding mechanism 70 is configured to be slidable only in the front direction in the penetrating direction is shown. In contrast, the first feature of the present embodiment is that the sliding mechanism 70 is configured so that the sensor device 30 is slidable in both directions (front-rear direction) in the penetrating direction. Further, the second feature is that the holder 50 is pressed against the sensor device 30 due to the spring property of the clip member 72 described later, whereby the sensor device 30 is fixed to the holder 50. In the example shown below, the configuration except for the shape of the protrusion 38 and the engaging groove 58 constituting the sliding mechanism 70 and the point that the clip member 72 is newly provided is the same as that shown in the first embodiment. It is said.

  Also in the present embodiment, as shown in FIGS. 9 and 10, as the sliding mechanism 70, a large number of protrusions 38 continue along the penetrating direction on the side surface 37 of the case constituting the processing unit 32 of the sensor device 30. Is provided. A large number of engagement grooves 58 are continuously provided along the penetration direction on the inner surface of the wall portion 57 (thick portion 57a) in the holder 50.

  As shown in FIG. 10, the length of the protrusion 38 from the end (front end) on the head 34 side in the penetrating direction to the protrusion vertex is substantially equal to the length from the rear end to the protrusion vertex. The taper is such that the distance from the front end to the projection apex in the penetrating direction becomes farther from the side surface 37 in the vertical direction as the distance from the head 34 increases. In FIG. 4, the shape is a substantially wedge shape that is tapered toward the side surface 37. In other words, it has a substantially wedge shape that is symmetrical with respect to the center of the protrusion 38 in the penetrating direction.

  Further, the engaging groove 58 has a substantially wedge shape corresponding to the protrusion 38. That is, as shown in FIG. 10, the length from the end (front end) on the bottom 51 side in the penetrating direction to the groove lower point (groove apex) is substantially equal to the length from the rear end to the groove lower point. . And, from the front end in the penetrating direction to the groove lower point, the distance from the bottom 51 is a taper shape that is separated from the inner surface (the portion without the engagement groove 58) of the wall portion 57 (thick portion 57a) in the vertical direction. The distance from the rear end in the penetration direction to the groove lower point has a substantially wedge shape that is tapered toward the inner surface of the thick portion 57a in the vertical direction as the distance from the bottom 51 increases. Further, the length of the engaging groove group in which the engaging grooves 58 are continuously formed along the penetrating direction is set to be longer than the length of the protruding group of the protrusions 38 in the same direction. As shown in FIGS. 9 and 10, the protrusion 38 is inserted and disposed in the engagement groove 58 in the intermediate region of the engagement groove group in the penetrating direction.

  Thus, in the sliding mechanism 70 according to the present embodiment, the passage resistance of the protrusion 38 with respect to the wall surface constituting the engagement groove 58 is substantially equal in the front direction and the rear direction. Therefore, the projection 38 gets over the wall surface that forms the engaging groove 58 by applying an external force in the forward direction, slides the sensor device 30 in the forward direction, and the projection 38 is engaged by applying the external force in the backward direction. The sensor device 30 can be slid in the rearward direction over the wall surface constituting the groove 58. That is, the sensor device 30 can be slid in the front-rear direction. In addition, the position of the sensor device 30 (head 34) can be finely adjusted by the pitch of the engagement groove 58.

  The clip member 72 is disposed on the outer surface of the holder 50, and presses the holder 50 against the sensor device 30 by its own spring property, thereby fixing the sensor device 30 to the holder 50 and eventually the bumper 11. In this embodiment, as shown in FIGS. 9, 11, and 12, the clip member 72 is extended from the flat plate portion 72 a having a substantially flat plane and the end surfaces of the short sides facing each other of the flat plate portion 72 a. The leg part 72b bent with respect to 72a is provided. Two leg portions 72b are provided for each side, and the clip member 72 has a total of four leg portions 72b.

  As shown in FIG. 9, the clip member 72 configured in this way has a flat plate portion 72 a on the rear end of the wall portion 54 of the holder 50 (the end opposite to the connection end with the bottom portion 51). The leg portions 72b are in contact with the outer surfaces of the wall portions 57 that are disposed and provided with the engagement grooves 58, respectively. Then, due to its own spring property, stress is applied to the wall portion 57 in the inner (sensor device 30 side) direction, so that the wall portion 57 is pressed against the case outer surface of the processing unit 32 of the sensor device 30. More specifically, the protrusion 38 and the engagement groove 58 are in a state of being strongly meshed with each other, thereby restricting the movement of the sensor device 30 in the penetration direction. In other words, the sensor device 30 is fixed to the holder 50 and thus the bumper 11 with the head 34 being substantially flush with the outer surface 13 of the bumper 11.

  As described above, in the present embodiment, the sensor device 30 and the holder 50 that holds the sensor device 30 at a predetermined position of the bumper 11 can be moved in the front-rear direction by applying an external force in the front-rear direction. A sliding mechanism 70 is provided. Therefore, when the sensor device 30 is attached to the bumper 11, the sensor device 30 can be slid in the direction in which the external force is applied by applying at least one of the forward and backward external forces to the sensor device 30. Further, the protrusion 38 and the engaging groove 58 constituting the sliding mechanism 70 are continuously provided in the penetrating direction, and the length of the protrusion group of the sensor device 30 on the side to be moved is set in the penetrating direction. Therefore, the head 34 of the sensor device 30 can be substantially flush with the outer surface 13 of the bumper 11 regardless of the thickness of the bumper 11. Further, in a state where the head 34 of the sensor device 30 is substantially flush with the outer surface 13 of the bumper 11, the holder 50 is pressed against the sensor device 30 by the spring property of the clip member 72, whereby the sensor device 30 is held in the holder. 50 is fixed. Therefore, even if a backward external force is applied to the head 34 of the sensor device 30, the position of the head 34 of the sensor device 30 can be held substantially flush with the outer surface 13 of the bumper 11. Thus, according to the sliding mechanism 70 and the clip member 72 according to the present embodiment, it is possible to deal with the bumpers 11 having different thicknesses and to improve the design.

  In addition, since the sensor device 30 may be slid with respect to the holder 50 by applying an external force to the sensor device 30, the operation of making the head 34 of the sensor device 30 substantially flush with the outer surface 13 of the bumper 11 is simplified. Can be

  Further, as the sliding mechanism 70, the protrusions 38 are continuously provided on the sensor device 30, and the engaging grooves 58 are continuously provided on the holder 50. Therefore, the position of the sensor device 30 in the penetrating direction can be finely adjusted by the pitch of the engagement groove 58.

  In addition, according to the sliding mechanism 70 according to the present embodiment, the sensor device 30 can be moved in the front-rear direction, so that the misalignment of the sensor device head 34 with respect to the outer surface 13 of the bumper 11 is caused only in the front direction. Compared to a configuration in which the sensor device 30 is movable, it can be reduced and preferably eliminated.

  Further, according to the sliding mechanism 70 according to the present embodiment, the sensor device 30 can be moved in the backward direction, so that it is possible to replace only the sensor device 30 without breaking the sliding mechanism 70. Therefore, even if a failure occurs in the sensor device 30 during use by the user after being attached to the vehicle, only the sensor device 30 can be replaced.

  In the present embodiment, an example in which the clip member 72 is applied as the fixing of the sensor device 30 to the holder 50 has been described. However, the sliding mechanism 70 receives an external force applied to the sensor device 30 to forcibly move the sensor device 30, and moves even if the sensor device 30 is not yet fixed to the holder 50. Unless a possible external force is applied to the sensor device 30, the position of the head 34 of the sensor device 30 is held in a state substantially flush with the outer surface 13 of the bumper 11. Therefore, the fixing of the sensor device 30 to the holder 50 is not particularly limited. For example, in addition to the clip member 72 described above, the sensor device 30 is fixed to the holder 50 by fixing a lid member that is held against the rear end (the end opposite to the head portion 34) of the sensor device 30 to the holder 50. You may make it fix to. Further, the sensor device 30 may be fixed to the holder 50 by providing a long hole along the through hole 12 in the sensor device 30 and also providing a hole in the holder 50 and screwing it through both holes. Further, it may be fixed by adhesion or welding. However, in the case of the clip member 72, it is possible to replace only the sensor device 30 by removing the clip member 72 from the holder 50 and moving the sensor device 30 backward by applying a backward external force. That is, the replacement work of the sensor device 30 can be simplified.

  The preferred embodiments of the present invention have been described above. However, the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the spirit of the present invention.

  In the present embodiment, an example of a vehicle is given as the moving body, but it can also be applied to a moving body other than the vehicle. Moreover, although the example which employ | adopts the bumper of a vehicle as a wall member was shown, it is not limited to a bumper, The body (metal thin plate) of a vehicle may be sufficient, and resin arrange | positioned to a part of a bumper or a body It may be a mall made of plastic.

  In the present embodiment, an example of an ultrasonic sensor device having a piezoelectric element as an ultrasonic element has been shown as the sensor device, but the sensor element and the sensor device are not limited to the above examples. Any sensor can be used as long as it can be attached to the wall member via a holding portion provided on the inner surface of the wall member so as to sense through the through hole formed in the wall member of the moving body. For example, the same effect can be obtained by applying the mounting structure of the present invention to a collision sensor device or an optical sensor device using a piezoelectric element.

  In the present embodiment, an example in which the holder 50 as the holding portion is configured as a separate member from the bumper 11 as the wall member, and is bonded and fixed to the inner surface 14 of the bumper 11 by the double-sided adhesive tape 71. However, as the holding portion, a configuration integrally formed as a part of the bumper 11 (wall member) can also be adopted. Further, the method of fixing the holder 50 as a separate member to the bumper 11 is not limited to the above example. For example, application of a liquid adhesive or screw fastening can be employed.

  In the present embodiment, as the sliding mechanism 70, the sensor device 30 is provided with the protrusion 38, and the holder 50 is provided with the engagement groove 58. However, a configuration in which the sensor device 30 is provided with an engagement groove and the holder 50 is provided with a protrusion may be employed. In any case, if the length of the formation range of the constituent elements of the sliding mechanism 70 on the side of the sensor device 30 to be moved is made shorter than the length of the formation range of the constituent elements of the sliding mechanism 70 on the holder 50 side, different thicknesses are obtained. This can correspond to the bumper 11 (wall member). Therefore, for example, the number of protrusions 38 provided on the sensor device 30 may be one in the penetration direction.

  In the first embodiment, a sliding mechanism 70 that allows the sensor device 30 to slide only in the forward direction is employed, and the sensor device 30 is fixed to the holder 50 by the sliding mechanism 70. . Certainly, in the attached state to the bumper 11 (wall member), a forward external force cannot be applied from the inner surface 14 side to the sensor device 30 first. The sensor device 30 can be fixed. However, a fixing method such as the clip member 72 shown in the second embodiment may be applied to the mounting structure of the sensor device 30 shown in the first embodiment. According to this, the fixing structure can be made stronger.

  In the present embodiment, an example in which the sensor device 30 and the holder 50 are provided with the drop prevention protrusions 39 and 59 is shown. However, a configuration without the drop prevention protrusions 39 and 59 may be adopted.

  In the present embodiment, the projection 38 constituting the sliding mechanism 70 has a substantially wedge shape, and the locking groove 58 has a shape corresponding to the projection 38. However, the structure of the sliding mechanism 70 shown in each embodiment is only an example. For example, in a configuration in which the sensor device 30 is slidable only in the front direction, the locking groove 58 may be a substantially rectangular shape instead of a wedge shape corresponding to the protrusion 38. In the configuration in which the sensor device 30 is slidable in the front-rear direction, the shape of the protrusion 38 may be, for example, a semicircular shape, and the engagement groove 58 may be a shape corresponding to the protrusion 38.

1 is a perspective view showing the vicinity of a rear bumper of a vehicle to which a sensor device mounting structure according to an embodiment of the present invention is applied. It is a fragmentary sectional view which shows the outline of the attachment structure of the sensor apparatus which concerns on 1st Embodiment. It is the figure which expanded the sliding mechanism periphery among the attachment structures of the sensor apparatus shown in FIG. It is the top view seen from the head side which shows schematic structure of a sensor apparatus. It is the top view seen from the case side surface which shows schematic structure of a sensor apparatus. It is the top view which looked at the holding member from the insertion side of the sensor apparatus. It is sectional drawing which follows the VII-VII line shown in FIG. It is sectional drawing which follows the VIII-VIII line shown in FIG. It is a fragmentary sectional view which shows the outline of the attachment structure of the sensor apparatus which concerns on 2nd Embodiment. It is the figure which expanded the sliding mechanism periphery among the attachment structures of the sensor apparatus shown in FIG. It is the top view seen from the rear end side of the holder which shows schematic structure of a clip member. It is the top view seen from the longitudinal direction end part side which shows schematic structure of a clip member.

Explanation of symbols

11 ... Bumper (wall member)
12 ... Through-hole 13 ... Outer surface 30 ... Sensor device 34 ... Head 38 ... Protrusion (sliding mechanism)
50 ... Holder (holding part)
58 ... engaging groove (sliding mechanism)
70 ... Sliding mechanism 72 ... Clip member

Claims (7)

A sensor device mounting structure in which a sensor device is attached to the wall member via a holding portion provided on an inner surface of the wall member so as to sense through a through hole formed in the wall member of the moving body. ,
By applying an external force in one direction from the inner surface side to the outer surface side of the wall member along the through hole, the sensor device and the holding portion are moved in only one direction with respect to the holding portion. A sliding mechanism is provided to make it movable,
The sensor device mounting structure, wherein a part of the sensor device is disposed in the through hole, and a head of the sensor device is substantially flush with an outer surface of the wall member. As the sliding mechanism,
One of the sensor device and the holding portion is continuously provided with a number of engagement grooves along the moving direction of the sensor device,
The other of the sensor device and the holding portion is inserted and disposed in the engagement groove, and the engagement groove is configured to apply an external force from the outer surface side to the inner surface side of the wall member along the through hole. The sensor device mounting structure according to claim 1, further comprising a protrusion that engages with a wall surface to hold the position of the sensor device. A sensor device mounting structure in which a sensor device is attached to the wall member via a holding portion provided on an inner surface of the wall member so as to sense through a through hole formed in the wall member of the moving body. ,
The sensor device and the holding portion are provided with a sliding mechanism that allows the sensor device to move in both directions along the through-hole with respect to the holding portion by applying an external force along the through-hole. ,
A part of the sensor device is disposed in the through hole, and the sensor device is fixed to the holding portion in a state where the head of the sensor device is substantially flush with the outer surface of the wall member. A sensor device mounting structure characterized by the above. As the sliding mechanism,
One of the sensor device and the holding portion is continuously provided with a number of engagement grooves along the moving direction of the sensor device,
The other of the sensor device and the holding portion is provided with a protrusion inserted and disposed in the engagement groove,
4. The projection according to claim 3, wherein the protrusion has a substantially wedge shape that is symmetrical with respect to the center of the sensor device in the moving direction, and the engagement groove has a shape corresponding to the protrusion. A mounting structure of the sensor device described.   The sensor device mounting structure according to claim 3 or 4, wherein the sensor device is fixed to the holding portion by a spring property of a clip member provided on an outer surface of the holding portion.   The sensor device mounting structure according to any one of claims 1 to 5, wherein the sensor device includes an ultrasonic element that converts an electrical signal into ultrasonic vibration or converts ultrasonic vibration into an electrical signal. . The moving body is a vehicle;
The sensor device mounting structure according to claim 1, wherein the wall member is at least one of a bumper, a molding, and a body.

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