JP2013086616A - Retainer for attaching sensor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suppress positional deviation with respect to a bumper hole of the retainer with a simple method.SOLUTION: The retainer includes a bracket 22 which is integrally connected to a retainer body 21 at a base end 22a, and integrally connected to an adhered part 23 adhered to an inner surface 3a of the bumper 3 with a double-faced adhesive tape 24 (adhering member) at a tip end 22b. In the bracket 22, a plurality of projections 37 (supports) which reach the inner surface 3a of the bumper 3 before the adhered part 23 reaches the inner surface 3a of the bumper 3 are integrally formed with. The adhered part 23 is integrally connected to the tip end 22b of the bracket 22 with respect to the inner surface 3a of the bumper 3 in a lifted state by a predetermined angle so that a wedge-like clearance E is formed between the double-faced adhesive tape 24 and the inner surface 3a of the bumper 3 while each of the projections 37 is brought in contact with the inner surface 3a of the bumper 3, thereby the retainer body 21 is movably supported along the inner surface 3a of the bumper 3.

Description

  The present invention relates to a sensor mounting retainer used when a sensor represented by, for example, an ultrasonic sensor is mounted on a bumper.

  As a structure for attaching a sensor typified by an ultrasonic sensor to a bumper, for example, as shown in FIG. 6, a bracket 102 is provided on a retainer 101 for attaching the sensor 100 to a bumper 201, and double-sided bonding of an attaching portion 103 of the bracket 102 is performed. It can be considered that the tape 104 is attached to the inner side surface 202 of the bumper 201 (the back surface in the vicinity of the bumper hole 203). According to such an attachment structure, the sensor 100 can be easily attached to the bumper 201 via the retainer 101.

  However, according to the above-described conventional concept, when the double-sided adhesive tape 104 contacts the inner side surface 202 of the bumper 201, it becomes difficult to adjust the position of the retainer 101 thereafter. It was necessary to align the direction. That is, the operation of bringing the bracket 102 close to the bumper 201 for attaching the double-sided adhesive tape 104 to the bumper 201 and the bracket 102 for attaching the bracket 102 to a predetermined position near the bumper hole 203 on the inner surface 202 of the bumper 201. It was necessary to perform the movement of moving left and right and up and down along with it. As described above, since it is necessary to perform two operations at the same time, positional deviation is likely to occur. In order to eliminate such misalignment, for example, in Patent Document 1 below, a technique is provided in which a spacer is provided at a corner of the contact surface 10 and the position of the fixing member is adjusted by contact between the spacer and the wall surface. Is disclosed. However, the technique described in Patent Document 1 described below can only adjust the position of the fixing member only within a moving range in which the collar is inserted through a through-hole formed in the wall surface and is centered, and the contact surface 10 has a wall surface. Therefore, the spacer cannot perform the function for the bumper having the wall surface formed in the curved shape.

JP-T-2001-502406

  The present invention has been made in order to address the above-described problems, and an object of the present invention is to provide a bumper in which the positional deviation of the retainer with respect to the bumper hole can be suppressed by a simple method and the inner surface is formed in a curved shape. Another object of the present invention is to provide a retainer for mounting a sensor that can be adapted to the above.

Means for Solving the Problems and Effects of the Invention

In order to achieve the above object, the present invention provides a sensor mounting retainer for mounting a sensor on an inner surface of a bumper so that a tip end portion of the sensor is exposed to the outside of the bumper through a bumper hole formed in the bumper. Because
The retainer has a retainer body that supports the sensor so that the sensor is disposed at a predetermined position;
A bracket that is integrally connected to the retainer main body at the base end, and is integrally connected to a flat plate-like sticking portion that is stuck to the inner surface of the bumper by an adhesive member at the tip;
The bracket can be elastically deformed as the affixing part is affixed to the inner side surface of the bumper. When the retainer body is brought closer to the inner side surface of the bumper, the affixing part is attached to the inner side surface of the bumper. A plurality of support portions that reach the inner surface of the bumper before reaching the bumper are integrally formed, and the wedge-shaped gap is formed between the adhesive member and the inner surface of the bumper in a state where the support portions are in contact with the inner surface of the bumper. The inner surface is formed in a horizontal shape or a curved surface shape by integrally connecting with the tip of the bracket in such a manner that the sticking portion is lifted by a predetermined angle with respect to the inner surface of the bumper The retainer main body is supported so as to be movable along the inner surface of the bumper without the sticking portion coming into contact with the inner surface of the bumper.

  In the retainer for mounting a sensor according to the present invention, the plurality of support portions are formed integrally with the bracket, and when the retainer body is brought close to the inner side surface of the bumper, the pasting portion reaches the inner side surface of the bumper. The support part reaches the inner surface of the bumper. And in the state which those support parts contacted the inner surface of the bumper, a retainer main body is supported so that a movement along the inner surface of a bumper is possible.

  According to this, the operation of moving the retainer main body close to the inner surface of the bumper and the operation of moving the retainer main body in a wide range from side to side and up and down along the inner surface of the bumper when the support portion is in contact with the inner surface of the bumper. Can be performed independently. That is, the pasting property in the pasting part can be remarkably improved by separating the two operations.

  Further, in a state where the support portion is in contact with the inner surface of the bumper, the sticking portion is formed at a predetermined angle with respect to the inner surface of the bumper so that a wedge-shaped gap is formed between the adhesive member and the inner surface of the bumper. When the bumper is formed so as to be lifted and integrally connected to the tip of the bracket, the retainer body can be attached to the bumper whose inner surface is formed in a horizontal shape or curved shape without the contact portion contacting the inner surface. It is supported so as to be movable along the side surface.

  According to this, since the affixing portion is arranged with an angle with respect to the inner side surface of the bumper, even when the inner side surface of the bumper has a curvature, the adhesive member is The retainer body can be moved along its inner surface without touching and sticking, and the bumper hole can be easily positioned in the same manner as when the inner surface of the bumper has a horizontal shape. it can.

  In this case, the plurality of support portions can be configured to be provided with three or more. According to this, it becomes possible to contact the inner side surface of the bumper with the three support portions, and the posture of the retainer main body with respect to the inner side surface of the bumper can be favorably maintained.

  Further, the distal end portion of the bracket has a plurality of arc portions having different curvatures and is formed in a curved shape that can be elastically deformed so that the curvature of the arc portion changes, and the support portion has a base end portion on the front side of the bracket. Further, it can be configured such that it is formed in a protruding shape that protrudes to the back side through a notch portion penetrating the front and back surfaces formed in the bracket.

  According to this, the support part can be easily formed, and when the sticking part is stuck to the bumper by the adhesive member, the tip of the bracket can be easily bent along with the movement of the sticking part.

  In this case, it is preferable that the tip end portion of the bracket has a thin shape that is thinner than the middle portion of the bracket. According to this, the tip of the bracket can be bent more easily with the movement of the affixing portion, and the elastic return force after bending can be set to a small value. Peeling of the sticking part can be prevented satisfactorily.

  In addition, the base end portion of the bracket has a plurality of arc portions having different curvatures and is formed in a curved shape that can be elastically deformed so that the curvature of the arc portion changes, and is thicker than the intermediate portion of the bracket. It can also be configured to have a thin thin shape.

  According to this, it is possible to bend greatly at the base end portion of the bracket in addition to the tip end portion of the bracket, and even if the thickness of the bumper is different, the tip end portion of the sensor is always appropriate according to the amount of bending of the bracket. Can be placed in position.

The perspective view which shows the state which attached the sensor 1 to the retainer 2. FIG. The perspective view which shows both components before attaching the sensor 1 to the retainer 2. FIG. FIG. 4A is a plan view of the retainer 2. (B) is a front view of the retainer 2. (C) is a side view of the retainer 2. (D) is a bottom view of the retainer 2. The enlarged view of the bracket 22. FIG. (A) is explanatory drawing when the sensor 1 and the retainer 2 are attached to the bumper 3 of thickness t1. (B), (C) is explanatory drawing when the sensor 1 and the retainer 2 are attached to the bumper 4 of thickness t2. Explanatory drawing when attaching the bracket 102 of the retainer 101 considered as a prior art example to the bumper 201. FIG.

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

  FIG. 1 is a perspective view showing a state in which a retainer 2 for attaching a sensor of the present invention (hereinafter simply referred to as retainer 2) is attached to an ultrasonic sensor 1 (hereinafter simply referred to as sensor 1). It is a perspective view which shows both components before attaching 1 to the retainer 2. FIG.

  The sensor 1 is a transmitter / receiver type that vibrates a piezoelectric ceramic vibrator by a piezoelectric effect, emits ultrasonic waves, and converts ultrasonic vibrations incident on the piezoelectric ceramic vibrator into an electric signal. 11, a housing portion 12, and the like.

  The sensor body 11 is formed in a stepped cylindrical shape having a tip 11a (lower end) having a minimum diameter. A microphone 13 having a built-in piezoelectric ceramic vibrator is incorporated in the distal end portion 11 a of the sensor body 11.

  The casing 12 is formed in a size that includes the sensor body 11 in plan view. The housing part 12 accommodates a control board, a filler, etc. (not shown). A connection terminal portion 14 for connecting a cable (not shown) is provided on the side surface of the housing portion 12 opposite to the side where the sensor body 11 is disposed.

  Moreover, when the sensor 1 is attached to the retainer 2 on both side surfaces of the housing 12 where the connection terminal portion 14 is not provided, the sensor 1 is engaged with an attachment hole 27a of the retainer 2 described later. Engagement protrusions 12 a that prevent the retainer 2 from coming out are provided. Further, the front side surface (left direction in FIG. 2) of the housing portion 12 where the connection terminal portion 14 is not provided is engaged with an engagement protrusion 28a of the retainer 2 described later, and the sensor body 11 is the center thereof. An engagement recess 12b that prevents rotation around the axis is provided.

  The retainer 2 is formed of a resin material such as polybutyne terephthalate, for example, and as shown in FIGS. 1 to 4, the sensor 1 is arranged so that the sensor body 11 is arranged at a predetermined position around the central axis. Are integrally provided with a retainer body 21 that supports the plurality of attachment portions 23, a plurality of attachment portions 23 attached to the inner side surface 3 a of the bumper 3, and a plurality of brackets 22 that connect the retainer body 21 and the attachment portions 23. The inner side surface 3a of the bumper 3 is formed in a horizontal shape or a curved shape.

  As shown in FIG. 3, the retainer body 21 has a substantially regular hexagonal bottom wall 25 and opposing sides of the bottom wall 25 as a first side 25a, a second side 25b, and a third side 25c. In this case, side walls 26a, 26b, and 26c that are erected corresponding to each side and a mounting wall 27 that is disposed inside each side wall 26a are provided. In addition, a step-shaped mounting portion 28 having a height lower than that of each mounting wall 27 is erected over both walls of the side wall 26b and the side wall 26c.

  In the bottom wall 25, a circular retainer hole 25 a that allows the sensor body 11 to be inserted from the inside of the retainer body 21 to the bumper hole 3 b side is formed corresponding to the circular bumper hole 3 b formed in the bumper 3. . The mounting wall 27 and the placement portion 28 are disposed so as to surround the periphery of the retainer hole 25a.

  Each mounting wall 27 has a function of mounting the casing 12 of the sensor 1, and its inner width is set to be substantially the same as the outer width of the casing 12 of the sensor 1. A through-shaped mounting hole 27a is formed at the corresponding position. Each mounting hole 27 a engages with the engagement protrusion 12 a of the housing portion 12 of the sensor 1.

  Each mounting portion 28 has a function of supporting the housing portion 12 of the sensor 1, and an engaging protrusion 28 a is formed to protrude on one upper surface. The engagement protrusion 28 a engages with the engagement recess 12 b of the casing 12 of the sensor 1.

  Each bracket 22 is provided corresponding to the second side 25b and the third side 25c of the bottom wall 25 of the retainer main body 21 in plan view, and the base end portion 22a is integrally connected to the retainer main body 21. The tip 22b is integrally connected to the sticking part 23. Specifically, each bracket 22 extends outward at the second side 25b and the third side 25c of the bottom wall 25, and the bottom wall 25 and the four pasting portions 23 have a predetermined size. The space is reduced so as to fit within the rectangular region S (see FIG. 3A).

  As shown in FIGS. 3 and 4, each bracket 22 has a distal end portion 22 b that is thinner than the intermediate portion 22 c and has a plurality of (three examples are shown in the first embodiment). The arc portions 31 to 33 having different curvatures are formed, and are formed into curved shapes that can be elastically deformed so that the curvatures of the arc portions 31 to 33 are changed. Similarly, the base end portion 22a of each bracket 22 is also formed into a thin wall shape that is thinner than the intermediate portion 22c, and a plurality of arc portions 34 having different curvatures (two cases are illustrated in the first embodiment). , 35, and is formed in a curved shape that can be elastically deformed so that the curvature of the arc portions 34, 35 changes.

  A cutout portion 36 penetrating the front and back sides is formed at the front end portion 22b of each bracket 22, and a projection 37 protruding from the front side portion of the intermediate portion 22c to the back side through the cutout portion 36 is formed. Each protrusion 37 has a downward protrusion amount so that the lower ends thereof are positioned on substantially the same plane. The retainer main body 21 is supported by three of the four protrusions 37 so as to be movable along the inner side surface 3a of the bumper 3 while maintaining its posture. The protrusion 37 corresponds to the support portion of the present invention.

  Each affixing portion 23 has a trapezoidal plate shape in plan view, and is affixed to the inner side surface 3a of the bumper 3 by a double-sided adhesive tape 24 (adhesive member) on the back side. Each sticking portion 23 has a wedge-shaped gap E between the double-sided adhesive tape 24 and the inner side surface 3a of the bumper 3 in a state where the projection 37 of the corresponding bracket 22 is in contact with the inner side surface 3a of the bumper 3 (see FIG. 4). Is formed so as to be lifted by a predetermined angle (acute angle) with respect to the inner side surface 3a of the bumper 3 so as to be integrally connected to the tip 22b of the bracket 22.

  Next, a method for attaching the retainer 2 to the bumper 3 will be described. When the retainer 2 is brought closer to the inner side surface 3a of the bumper 3 from the bracket 22 side, the protrusion 37 is formed before the double-sided adhesive tape 24 of the sticking portion 23 reaches the inner side surface 3a of the bumper 3 as shown in FIG. Reaches the inner surface 3a. And in the state which these protrusions 37 contact the inner surface 3a of the bumper 3, the retainer main body 21 is supported so that a movement along the inner surface 3a of the bumper 3 is possible.

  The retainer main body 21 is moved along the inner side surface 3a of the bumper 3 and positioned so that the retainer hole 25a and the bumper hole 3b are located concentrically. If the sensor 1 is assembled in the retainer main body 21 and the sticking portion 23 is spread, the sticking portion 23 is formed on the inner side surface 3a of the bumper 3 as the tip 22b of the bracket 22 is elastically deformed as shown in FIG. The sticking portion 23 can be attached to the inner side surface 3 a of the bumper 3 by the double-sided adhesive tape 24.

  In FIG. 5A, the thickness of the bumper 2 (see FIG. 5A) can be arranged so that the tip 11a of the sensor body 11 can be flush with the outer surface 3c of the bumper 3 if the pasting part 23 is spread as it is. t1) is set, and the distance between the tips of the pasting portion 23 in the pasting state is, for example, L1.

  Next, a method for attaching the sensor 1 to the bumper 4 having a thickness t2 (t2> t1) using the retainer 2 will be described. Also in this case, the retainer body 21 is moved along the inner side surface 4a of the bumper 4 and positioned so that the retainer hole 25a and the bumper hole 4b are concentrically as described above.

  Then, the sensor 1 is incorporated in the retainer main body 21 and, as shown in FIG. 5C, a jig 5 (stopper) is placed on the outside of the bumper 4 at a position corresponding to the bumper hole 4b to close the bumper hole 4b. . Since the thickness t <b> 2 of the bumper 4 is thick, when the protrusions 37 are in contact with the inner surface 4 a of the bumper 4, as shown in FIG. 5B, the tip end portion 11 a of the sensor 1 and the outer surface of the bumper 4. A gap e1 is formed between 4c and 4c.

  In this state, when the sensor 1 is pushed together with the retainer body 21 and the distal end portion 11a of the sensor 1 is brought into contact with the jig 5, the proximal end portion 22a of the bracket 22 is bent. If the distal end portion 22b of the bracket 22 is expanded so that the contact state between the distal end portion 11a of the sensor 1 and the jig 5 is maintained, the distance L2 between the distal ends of the pasting portion 23 is the distance L1 (FIG. 5 ( (See A)) (L2> L1). In this state, the affixing portion 23 is fixed to the inner side surface 4 a of the bumper 4 by the double-sided adhesive tape 24, and the sensor 1 is attached with the tip end portion 11 a flush with the outer side surface 4 c of the bumper 4.

  As is clear from the above description, in the first embodiment, each projection 37 is formed integrally with the corresponding bracket 22, and is attached when the retainer body 21 is brought close to the inner side surface 3 a of the bumper 3. The lower end of each projection 37 reaches the inner side surface 3 a of the bumper 3 before the portion 23 reaches the inner side surface 3 a of the bumper 3. In a state where each projection 37 is in contact with the inner side surface 3 a of the bumper 3, the retainer main body 21 is supported so as to be movable along the inner side surface 3 a of the bumper 3.

  Thereby, in the operation of bringing the retainer main body 21 closer to the inner side surface 3a of the bumper 3 and the state where each projection 37 is in contact with the inner side surface 3a of the bumper 3, the retainer main body 21 is moved left and right along the inner side surface 3a of the bumper 3. It is possible to independently perform the operation of moving in a wide range up and down. That is, the pasting property in the pasting part 23 can be remarkably improved by separating the two operations.

  In the first embodiment, the protrusions 37 are attached so that a wedge-shaped gap E is formed between the double-sided adhesive tape 24 and the inner side surface 3 a of the bumper 3 in a state where the projections 37 are in contact with the inner side surface 3 a of the bumper 3. The part 23 is integrally connected to the tip of the bracket 22 so as to be lifted by a predetermined angle with respect to the inner side surface 3a of the bumper 3, so that the inner side surface 3a is formed into a horizontal shape or a curved surface shape. On the other hand, the retainer body 21 is supported so as to be movable along the inner side surface without the sticking portion 23 coming into contact with the inner side surface 3a.

  As a result, since the affixing portion 23 is disposed with an angle with respect to the inner side surface 3a of the bumper 3, even if the inner side surface 3a of the bumper 3 has a curvature, the double-sided adhesive tape 24 is provided. The retainer body 21 can be moved along the inner side surface 3a without contacting and sticking to the inner side surface 3a, and in the same manner as when the inner side surface 3a of the bumper 3 has a horizontal shape, Positioning with respect to the bumper hole 3b can be easily performed.

  In the first embodiment, the four brackets 22 are provided around the retainer main body 21, and the protrusion 37 is provided for each bracket 22. Accordingly, the three protrusions 37 can come into contact with the inner side surface 3 a of the bumper 3, and the posture of the retainer main body 21 with respect to the inner side surface 3 a of the bumper 3 can be favorably maintained.

  Moreover, in the said Example 1, the front-end | tip part 22b of each bracket 22 has the curved part shape which has the some circular arc parts 31-33 of a different curvature, and can be elastically deformed so that the curvature of these circular arc parts 31-33 may change. Each of the protrusions 37 is formed in a protruding shape that projects from the front side of the bracket 22 to the back side through a notch 36 penetrating the front and back formed on the front end part 22b.

  Thereby, each protrusion 37 can be easily formed, and when the affixing portion 23 is affixed to the bumper 3 by the double-sided adhesive tape 24, the tip 22b of the bracket 22 can be easily moved with the movement of the affixing portion 23. Can be bent.

  Moreover, in the said Example 1, the front-end | tip part 22b of each bracket 22 is made into the thin wall shape thin thickness compared with the intermediate part 22c. As a result, the tip 22b of the bracket 22 can be bent more easily with the movement of the affixing portion 23, and the elastic restoring force after bending can be set small. It is possible to satisfactorily prevent the sticking part 23 from peeling off due to the elastic return.

  Further, in the first embodiment, the base end portion 22a of each bracket 22 has a plurality of arc portions 34, 35 having different curvatures, and has a curved surface shape that can be elastically deformed so that the curvature of the arc portions 34, 35 changes. It is formed into a thin wall shape that is thinner than the intermediate portion 22c.

  Thereby, in addition to the front-end | tip part 22b of each bracket 22, it becomes possible to bend greatly also in the base end part 22a, and even if the thickness of the bumper 3 (4) differs, according to the bending adjustment of the bracket 22, the sensor 1 of FIG. The distal end portion 11a can always be arranged at an appropriate position.

  In the first embodiment, four brackets 22 are provided, but may be three or five or more.

  Moreover, in the said Example 1, although the front-end | tip part 22b of each bracket 22 was made into the thin shape thin thickness compared with the intermediate part 22c, it is good also as thickness similar to the intermediate part 22c. Similarly, the base end portion 22a of each bracket 22 may be as thick as the intermediate portion 22c.

  Further, in Example 1 described above, a wedge-shaped gap E is formed between the double-sided adhesive tape 24 and the inner side surface 3a of the bumper 3 with each projection 37 in contact with the inner side surface 3a of the bumper 3. Although each sticking part 23 was comprised so that it might be connected with the front-end | tip part 22b of each bracket 22 in the form lifted only by the predetermined angle with respect to the inner surface 3a of the bumper 3, it is not restricted to this, For example, horizontal shape You may comprise so that a clearance gap may be formed.

  In the first embodiment, the case where the double-sided adhesive tape 24 is used as the adhesive member has been described. However, the present invention is not limited thereto, and for example, an adhesive may be applied to the pasting portion 23.

  In the first embodiment, the case where the bumper hole 3b (4b) is circular has been described. However, the sensor mounting retainer of the present invention can be widely applied to bumper holes having shapes other than circular.

  In the first embodiment, the case where the sensor mounting retainer of the present invention is applied to an ultrasonic sensor has been described. However, the present invention is not limited to this, and can be widely applied to sensors such as an electromagnetic wave reflection type sensor. it can.

1 Sensor (Ultrasonic sensor)
2 Retainer (Retainer for sensor mounting)
3, 4 Bumper 3a, 4a Inner side surface 3b, 4b Bumper hole 5 Jig 11 Sensor body 11a Tip part 21 Retainer body 22 Bracket 22a Base end part 22b Tip part 22c Intermediate part 23 Adhering part 24 Double-sided adhesive tape (adhesive member)
31-35 Arc part 36 Notch part 37 Protrusion (support part)

Claims (4)

A sensor mounting retainer for attaching the sensor to the inner surface of the bumper so that the tip of the sensor is exposed to the outside of the bumper through a bumper hole formed in the bumper,
The retainer includes a retainer body that supports the sensor so that the sensor is disposed at a predetermined position;
A bracket that is integrally connected to the retainer main body at a base end portion, and is integrally connected to a flat plate-like sticking portion that is stuck to an inner surface of the bumper by an adhesive member at a tip portion;
The bracket is made elastically deformable in accordance with an operation in which the affixing part is affixed to the inner side surface of the bumper, and the affixing part is attached to the bracket when the retainer body is brought closer to the inner side surface of the bumper. A plurality of support portions that reach the inner surface of the bumper before the inner surface of the bumper is integrally formed,
In a state where the support portion is in contact with the inner surface of the bumper, the sticking portion is predetermined with respect to the inner surface of the bumper so that a wedge-shaped gap is formed between the adhesive member and the inner surface of the bumper. When the bumper is formed so that the inner side surface is formed in a horizontal shape or a curved surface shape, the affixing portion comes into contact with the inner side surface. A retainer for mounting a sensor, wherein the retainer body is supported so as to be movable along an inner surface thereof.   The sensor mounting retainer according to claim 1, wherein three or more support portions are provided.   The front end portion of the bracket has a plurality of arc portions having different curvatures, and is formed into a curved shape that can be elastically deformed so that the curvature of the arc portion changes, and the plurality of support portions are portions on the front side of the bracket The retainer for mounting a sensor according to claim 2, wherein the retainer is formed in a protruding shape that protrudes toward the back side through a notch portion that penetrates through the front and back surfaces formed in the bracket.   The retainer for mounting a sensor according to claim 3, wherein a tip portion of the bracket has a thin shape that is thinner than an intermediate portion of the bracket.

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