JP5852799B2 - Foreign matter detection sensor fixing structure and foreign matter detection device - Google Patents

Description

  The present invention relates to a foreign matter detection sensor fixing structure for fixing a foreign matter detection sensor to a bracket, and a foreign matter detection device including the fixing structure.

  2. Description of the Related Art Conventionally, an electric door opening / closing device that opens and closes an opening (a passenger door, a rear opening, etc.) formed in a vehicle body by electrically moving a door panel by a driving force of a motor or the like includes a peripheral portion of the opening and a door panel. In order to prevent foreign matter from being caught between them, there is a device provided with a foreign matter detection device that detects foreign matter existing between the peripheral portion of the opening and the door panel. For example, in the foreign object detection device described in Patent Document 1, a foreign object detection sensor that detects the foreign object by being elastically deformed by an external force applied from the foreign object is fixed to a metal bracket attached to the peripheral portion of the door panel. doing.

JP 2002-242535 A

  In recent years, weight reduction of components mounted on vehicles has been desired. In order to reduce the weight of the foreign object detection device, it is desirable to use a resin bracket instead of the metal bracket.

  Further, the place where the foreign object detection sensor is arranged in the vehicle is a narrow space between the door panel whose opening is closed and the peripheral edge of the opening. Therefore, if the height of the foreign object detection sensor from the mounting surface on which the resin bracket is attached (the protrusion amount is large), it may be difficult to place the foreign object detection sensor due to restrictions on the shape of the vehicle body or the door panel. is there.

For these reasons, it has been a problem how to fix the foreign matter detection sensor to the resin bracket while suppressing the height of the foreign matter detection sensor.
The present invention has been made in view of such circumstances, and an object thereof is to provide a foreign matter detection sensor fixing structure and a foreign matter detection device capable of suppressing the height of the foreign matter detection sensor from the mounting surface. is there.

In order to solve the above-mentioned problem, the invention according to claim 1 is provided at a peripheral portion of the opening formed in the vehicle body or a peripheral portion of the opening / closing body that opens and closes the opening, the peripheral portion facing the peripheral portion of the opening. A foreign matter detection sensor fixing structure for fixing a long foreign matter detection sensor for detecting the foreign matter by being elastically deformed by receiving an external force from the foreign matter with respect to the resin bracket attached to the mounting surface. The foreign matter detection sensor is inserted into the bracket so that the support portion protruding from the outer peripheral surface of the foreign matter detection sensor is inclined with respect to the mounting surface in a cross section perpendicular to the longitudinal direction of the foreign matter detection sensor. bracket is fixed to said object detection sensor includes a cylindrical outer peripheral surface of said bracket, said supporting along the circumferential direction of the object detection sensor On both sides of the part, there is a pair of receiving surfaces that form an arc shape with the same curvature as the outer peripheral surface of the foreign object detection sensor and abut against the outer peripheral surface of the foreign object detection sensor and receive the external force through the foreign object detection sensor, The summary is that the receiving surface closer to the mounting surface of the pair of receiving surfaces is formed wider in the circumferential direction of the foreign object detection sensor than the receiving surface far from the mounting surface . .

  According to this configuration, for example, the support portion is inserted into the bracket that is reduced in weight by being formed of resin so as to be inclined with respect to the mounting surface in a cross section orthogonal to the longitudinal direction of the foreign object detection sensor. The foreign object detection sensor can be disposed closer to the mounting surface than in the case where it is inserted into the bracket so as to stand upright with respect to the mounting surface. Therefore, the height of the foreign matter detection sensor from the mounting surface can be suppressed.

  According to this configuration, the receiving surface closer to the mounting surface of the pair of receiving surfaces has a shape closer to the mounting surface than the receiving surface farther from the mounting surface. Accordingly, by forming the receiving surface closer to the mounting surface wider in the circumferential direction of the foreign object detection sensor than the receiving surface far from the mounting surface, the receiving surface closer to the mounting surface with respect to the foreign object detection sensor. When a force in a direction substantially perpendicular to the mounting surface is applied from the foreign material from the opposite side, the foreign material detection sensor can be stably supported by the receiving surface closer to the mounting surface. Therefore, the foreign matter detection sensor can be elastically deformed well between the receiving surface closer to the mounting surface and the foreign matter.

According to a second aspect of the present invention, in the fixing structure of the foreign matter detection sensor according to the first aspect, the bracket is provided in the back door as the opening / closing body that opens and closes the opening formed in the rear portion of the vehicle body. The gist is that it is attached to the mounting surface provided along the peripheral edge facing the peripheral edge of the opening.

  According to this configuration, the foreign object detection sensor can be disposed on the peripheral edge of the back door that faces the peripheral edge of the rear opening while suppressing the height of the foreign object detection sensor from the mounting surface. Therefore, it can suppress that the arrangement position of the foreign material detection sensor arrange | positioned at a back door receives the restrictions of the shape of the peripheral part of the rear part opening part in a vehicle body.

The invention according to claim 3 is a foreign object detection sensor that is elastically deformed by receiving an external force, a bracket to which the foreign object detection sensor is fixed by the support portion, and a foreign object detection sensor according to claim 1 or 2. The gist of the present invention is a foreign object detection device that detects a foreign object in contact with the foreign object detection sensor by elastic deformation of the foreign object detection sensor.

According to this configuration, the height of the foreign object detection sensor from the mounting surface is suppressed. Accordingly, it is possible to obtain a foreign object detection device with an increased degree of freedom in the position of the foreign object detection sensor.
According to a fourth aspect of the present invention, there is provided a resin that is attached to a mounting surface provided on a peripheral edge of the opening formed in a vehicle body or on a peripheral edge of the opening / closing body that opens and closes the opening. A foreign matter detection sensor fixing structure for fixing a long foreign matter detection sensor for detecting the foreign matter by being elastically deformed by receiving external force from the foreign matter with respect to a bracket made of a foreign material, the outer periphery of the foreign matter detection sensor The foreign matter detection sensor is fixed to the bracket by inserting the support portion protruding from the surface into the bracket so as to be inclined with respect to the mounting surface in a cross section orthogonal to the longitudinal direction of the foreign matter detection sensor. The foreign object detection sensor has a cylindrical outer peripheral surface, and the bracket is provided on both sides of the support portion along the circumferential direction of the foreign object detection sensor. An arc shape having the same curvature as the outer peripheral surface of the sensor is formed, and has a pair of receiving surfaces that contact the outer peripheral surface of the foreign object detection sensor and receive the external force through the foreign object detection sensor, and of the pair of receiving surfaces, The gist is that the receiving surface closer to the mounting surface has a shape closer to the mounting surface than the receiving surface farther from the mounting surface .
According to this configuration, for example, the support portion is inserted into the bracket that is reduced in weight by being formed of resin so as to be inclined with respect to the mounting surface in a cross section orthogonal to the longitudinal direction of the foreign object detection sensor. The foreign object detection sensor can be disposed closer to the mounting surface than in the case where it is inserted into the bracket so as to stand upright with respect to the mounting surface. Therefore, the height of the foreign matter detection sensor from the mounting surface can be suppressed.

  ADVANTAGE OF THE INVENTION According to this invention, the fixing structure of a foreign material detection sensor which can suppress the height of the foreign material detection sensor from an attachment surface, and a foreign material detection apparatus can be provided.

(A) And (b) is the schematic of the vehicle carrying an electric back door apparatus. The block diagram which shows the electric constitution of an electric back door apparatus. The perspective view of the bracket and the sensor wire fixed to the bracket. The perspective view of a bracket. Sectional drawing orthogonal to the longitudinal direction of a bracket and a sensor wire. Sectional drawing of vehicle rear part vicinity (AA sectional drawing in FIG.1 (b)).

DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, an embodiment of the invention will be described with reference to the drawings.
As shown in FIGS. 1A and 1B, the vehicle 1 is equipped with an electric back door device 2. The vehicle 1 includes a vehicle body 3 made of a conductive metal material, and a rear opening 4 is formed at the rear of the vehicle body 3. A portion of the rear opening 4 below the substantially central portion in the up-down direction has a narrower width in the left-right direction than a portion above the substantially central portion in the up-down direction of the rear opening 4. The rear opening 4 is opened and closed by a door panel 5 made of a conductive metal material and having a shape corresponding to the rear opening 4.

  A portion on the lower end side of the door panel 5 with respect to the substantially central portion in the vertical direction (about half of the upper portion in FIG. 1A) is a portion on the upper end side with respect to the substantially central portion in the vertical direction of the door panel 5 (FIG. 1). In (a), the width in the left-right direction is narrower than the lower half). Therefore, both ends in the left-right direction of the door panel 5 are non-linear. The upper end portion of the door panel 5 is rotatably connected to the upper end portion of the rear side surface of the vehicle body 3. The door panel 5 is pivotable so that the lower end portion of the door panel 5 moves in the vertical direction with the connection portion with the vehicle body 3 as the pivot center. The door panel 5 is moved between the fully closed position and the fully open position. The fully closed position is a position where the door panel 5 completely closes the rear opening 4, and the fully open position is a position where the door panel 5 completely opens the rear opening 4.

  The door panel 5 is connected to a drive mechanism (not shown) provided with an actuator 6 (see FIG. 2) and disposed on the vehicle body 3 side. In the electric back door device 2, when the actuator 6 is driven, the door panel 5 is rotated in the vertical direction to open and close the rear opening 4.

  As shown in FIG. 2, the actuator 6 includes a motor 7 and a speed reduction mechanism (not shown) that decelerates and outputs the rotation of the motor 7. Further, a position detection device 8 for detecting the rotation of the motor 7 is disposed in the actuator 6. The position detection device 8 is, for example, a permanent magnet provided so as to rotate integrally with a rotation shaft (not shown) of the motor 7 or a reduction gear (not shown) constituting the speed reduction mechanism, and is disposed opposite to the permanent magnet. Hall IC (not shown). And Hall IC outputs the pulse signal according to the change of the magnetic field of this permanent magnet by rotation of a permanent magnet as a position detection signal.

  The electric back door device 2 includes an operation switch 9 for instructing opening and closing of the door panel 5. As shown in FIG. 1A and FIG. 2, when the operation switch 9 is operated by a passenger or the like of the vehicle 1 to open the rear opening 4, the door panel opens the rear opening 4. An open signal indicating that 5 is to be rotated is output. On the other hand, when the operation switch 9 is operated so as to close the rear opening 4 by a passenger or the like, the operation switch 9 outputs a closing signal for rotating the door panel 5 so as to close the rear opening 4. The operation switch 9 is provided in a predetermined part (dashboard or the like) in the passenger compartment, a door lever (not shown) of the door panel 5, a carry item (not shown) carried with the ignition key, and the like.

  In addition, the electric back door device 2 detects a foreign matter X (see FIG. 6) that exists between the peripheral edge of the door panel 5 and the peripheral edge of the rear opening 4 that faces the peripheral edge of the door panel 5. A detection device 11 is provided. As shown in FIGS. 1 to 3, the foreign object detection device 11 is electrically connected to the bracket 12 fixed to the peripheral portion of the door panel 5, the sensor wire 13 fixed to the bracket 12, and the sensor wire 13. The energization detection unit 14 is provided.

  As shown in FIG. 1A, the bracket 12 is fixed to a peripheral edge portion of the door panel 5 that faces the peripheral edge portion of the rear opening 4, and more specifically, the inner surface of the door panel 5 (that is, the compartment of the door panel 5). The side surfaces are fixed to both ends in the left-right direction. Each bracket 12 has a substantially strip shape extending from the upper end portion to the lower end portion of the door panel 5 along both left and right end portions of the door panel 5. The bracket 12 is curved at the center in the longitudinal direction (vertical direction of the door panel 5) according to the shape of both ends in the left-right direction of the non-linear door panel 5.

  As shown in FIG. 4, each bracket 12 includes a fixing portion 21 extending in the longitudinal direction of the bracket 12, and a holding portion 22 formed integrally with the fixing portion 21 at one end portion in the width direction of the fixing portion 21. I have.

  The fixing portion 21 has a shape corresponding to the surface shape of the portion of the door panel 5 to which the bracket 12 is fixed. In the present embodiment, the fixing portion 21 has a substantially L-shaped cross section perpendicular to the longitudinal direction. It has a plate shape. In each bracket 12, one side surface in the thickness direction (a direction orthogonal to the longitudinal direction and the width direction) abuts on a mounting surface 5 a (see FIG. 6) on the door panel 5 side when fixed to the door panel 5. It is the contact surface 12a. In the present embodiment, the contact surface 12a is a side surface that is the outside of the L shape in the bracket 12 having an L-shaped cross section. Moreover, as shown to Fig.1 (a), the attachment surface 5a is the both ends of the left-right direction of the inner surface (namely, side surface by the side of the compartment of the door panel 5) of the door panel 5. As shown in FIG. As shown in FIG. 6, the mounting surface 5 a is orthogonal to the moving direction of the door panel 5 (see arrow α in FIG. 6) immediately before the door panel 5 is disposed at the fully closed position when the door panel 5 is closed. It has a planar mounting portion 5b. The sensor wire 13 is disposed on the attachment portion 5b.

  As shown in FIG. 1 and FIG. 4, the holding portion 22 is located at the end portion on the side that becomes the outside of the door panel 5 when the bracket 12 is fixed to the door panel 5. It is provided along. The holding portion 22 is continuously formed from one end to the other end of the fixing portion 21 in the longitudinal direction. Further, the holding portion 22 has a semi-cylindrical shape extending along the longitudinal direction of the fixed portion 21, is formed thicker than the fixed portion 21, and protrudes on the side opposite to the contact surface 12 a.

  As shown in FIG. 5, the holding portion 22 is formed with a holding recess 23 that is recessed from the contact surface 12a side and has an opening in the contact surface 12a. The opening of the holding recess 23 is formed in the holding-side contact surface 12b that is a portion corresponding to the holding portion 22 in the contact surface 12a. The holding recess 23 is continuously formed along the longitudinal direction of the bracket 12. As shown in FIGS. 4 and 5, the opening of the holding recess 23 has a plurality of bridge portions 24 that cross the opening 23 a of the holding recess 23 in the width direction of the bracket 12 at a plurality of locations in the longitudinal direction of the bracket 12. Is formed. Each bridging portion 24 connects two inner side surfaces of the holding concave portion 23 facing in the width direction of the bracket 12.

  Further, as shown in FIG. 5, a pressing surface 25 having a flat shape inclined with respect to the holding-side contact surface 12 b is formed on the bottom surface of the holding recess 23. The pressing surface 25 is formed from one end portion in the longitudinal direction of the bracket 12 to the other end portion. The pressing surface 25 is inclined with respect to the holding-side contact surface 12b so that the distance between the pressing surface 25 and the holding-side contact surface 12b decreases as the distance from the fixing portion 21 increases along the width direction of the bracket 12. ing.

  The holding portion 22 is formed with a through hole 26 as a through portion that penetrates the bottom of the holding recess 23. The through hole 26 passes through a portion of the holding portion 22 that is the bottom of the holding recess 23 so as to be orthogonal to the pressing surface 25. Accordingly, the through hole 26 is inclined with respect to the holding-side contact surface 12b so that the distance between the through-hole 26 and the holding-side contact surface 12b increases as the distance from the fixing portion 21 increases along the width direction of the bracket 12. ing. Further, the inner opening 26 a of the through hole 26 is formed in the center portion of the pressing surface 25 in the width direction of the bracket 12. And this through-hole 26 is extended along the longitudinal direction of the bracket 12 from the one end part of the longitudinal direction of the bracket 12 to the other end part, and has comprised slit shape, as shown in FIG.

  In addition, a pair of receiving surfaces 27 a and 27 b (a first receiving surface 27 a and a second receiving surface 27 b) are formed on the holding portion 22 on both sides in the width direction of the outer opening portion 26 b of the through hole 26. . As shown in FIG. 5, the pair of receiving surfaces 27 a and 27 b are curved surfaces having an arc shape that is recessed toward the holding-side contact surface 12 b in the cross section orthogonal to the longitudinal direction of the bracket 12. The pair of receiving surfaces 27 a and 27 b extend in the longitudinal direction of the bracket 12 along the through hole 26 on both sides in the width direction of the outer opening 26 b of the through hole 26. The pair of receiving surfaces 27 a and 27 b are formed from one end of the bracket 12 in the longitudinal direction to the other end. The pair of receiving surfaces 27a and 27b are formed to have the same curvature, and the centers of curvature O of each other coincide. Furthermore, the center of curvature O of the pair of receiving surfaces 27 a and 27 b is the center line of the through hole 26 that extends in the through direction of the through hole 26 through the center in the width direction of the through hole 26 in the cross section orthogonal to the longitudinal direction of the bracket 12. Located on L1.

  As shown in FIGS. 1, 4 and 6, each bracket 12 as described above has a contact surface 12 a abutting against the mounting surface 5 a at both left and right end portions on the inner surface of the door panel 5, and a holding portion. 22 is located on the outer peripheral side of the door panel 5, and the fixing portion 21 is disposed on the door panel 5 so as to be located on the center side in the left-right direction of the door panel 5. The holding contact surface 12b contacts the mounting portion 5b of the mounting surface 5a. And each bracket 12 is being fixed to the door panel 5 by the pin 28 which penetrates the several location of the fixing | fixed part 21. As shown in FIG.

  As shown in FIG. 3, the sensor line 13 has a long string shape. The sensor line 13 includes a foreign matter detection sensor 31 and a support portion 41 for fixing the foreign matter detection sensor 31 to the bracket 12.

  The long hollow insulator 32 constituting the foreign object detection sensor 31 is formed of an elastically deformable insulator (soft resin material, rubber (including elastomer), etc.) having insulating properties and restoring properties. The hollow insulator 32 has a hollow shape by forming a substantially cylindrical shape. Further, the outer peripheral surface 32a of the hollow insulator 32 (that is, the outer peripheral surface of the foreign matter detection sensor 31) has a cylindrical shape. As shown in FIG. 5, the curvatures of the receiving surfaces 27 a and 27 b are formed to be equal to the curvature of the outer peripheral surface 32 a of the hollow insulator 32.

  Inside the hollow insulator 32, four electrode wires 33 to 36 held by the hollow insulator 32 are arranged. Each of the electrode wires 33 to 36 includes a flexible central electrode 37 formed by twisting conductive thin wires, and a cylindrical conductive coating layer 38 that has conductivity and elasticity and covers the outer periphery of the central electrode 37. It is composed of The electrode lines 33 to 36 are arranged at equal angular intervals in the circumferential direction (90 ° intervals in the present embodiment) inside the hollow insulator 32 and between the electrode lines 33 to 36 adjacent in the circumferential direction. While maintaining a constant interval, the hollow insulator 32 extends in a spiral shape in the longitudinal direction. Furthermore, each electrode wire 33 to 36 is held by the hollow insulator 32 by being partially embedded in the hollow insulator 32 inside the hollow insulator 32.

  As shown in FIG. 2, the electrode wire 33 and the electrode wire 35 are electrically connected to each other at one end in the longitudinal direction (the left end in FIG. 2), and the electrode wire 34 and the electrode wire 36 are also connected to one end in the longitudinal direction. (Left end in FIG. 2) are connected to each other and conducted. The other ends of the electrode wire 35 and the electrode wire 36 in the longitudinal direction are electrically connected via a resistor 39. Furthermore, the other end of the electrode wire 33 in the longitudinal direction is electrically connected to the energization detection unit 14, and the other end of the electrode wire 34 is connected to the ground GND (that is, grounded to the vehicle body 3).

  As shown in FIG. 5, the support portion 41 is integrally formed with the hollow insulator 32 of the foreign object detection sensor 31 and is elastically deformable with the same material as the hollow insulator 32, that is, with insulation and resilience. It is formed of an insulator (soft resin material, rubber (including elastomer), etc.). The support portion 41 protrudes outward in the radial direction of the hollow insulator 32 from the outer peripheral surface 32 a of the hollow insulator 32 of the foreign object detection sensor 31. The support portion 41 is continuously formed from one end to the other end in the longitudinal direction of the hollow insulator 32, and the cross-sectional shape thereof is constant in the longitudinal direction of the hollow insulator 32. The support portion 41 includes an insertion portion 42 and a pair of pressing portions 43 formed integrally with the insertion portion 42.

  The insertion portion 42 includes a fitting portion 42a that protrudes radially outward of the hollow insulator 32 from the outer peripheral surface 32a of the hollow insulator 32, and a radially outer portion of the hollow insulator 32 from the distal end portion of the fitting portion 42a. The first insertion portion 42b extends, and the second insertion portion 42c extends outward in the radial direction of the hollow insulator 32 from the distal end of the first insertion portion 42b.

  The fitting portion 42 a is formed continuously from one end to the other end of the hollow insulator 32 along the longitudinal direction (axial direction) of the hollow insulator 32. The height of the fitting portion 42a (the length of the fitting portion 42a in the radial direction of the hollow insulator 32) is formed to be lower than the length of the through hole 26 in the penetrating direction. The width of the fitting portion 42a (the length of the fitting portion 42a in the direction along the circumferential direction of the hollow insulator 32) is formed to be equal to the width of the through hole 26.

  The first insertion portion 42b is continuously formed at the distal end portion of the fitting portion 42a from one end to the other end in the longitudinal direction of the fitting portion 42a (that is, the longitudinal direction of the hollow insulator 32). The width of the first insertion portion 42 b (the length of the first insertion portion 42 b in the direction along the circumferential direction of the hollow insulator 32) is narrower than the width of the through hole 26.

  The second insertion portion 42c is continuously formed at the distal end portion of the first insertion portion 42b from one end to the other end in the longitudinal direction of the first insertion portion 42b (that is, the longitudinal direction of the hollow insulator 32). In other words, the second insertion portion 42 c is provided at the distal end portion of the support portion 41 and is adjacent to the first insertion portion 42 b in the protruding direction of the insertion portion 42. The width of the second insertion portion 42c (the length of the second insertion portion 42c in the direction along the circumferential direction of the hollow insulator 32) is narrower (thinner) than the width of the through hole 26, and the first insertion portion It is formed wider than the width of 42b.

  The pair of pressing portions 43 are formed on both sides of the insertion portion 42 in the width direction. The pair of pressing portions 43 extend from the boundary portion between the first insertion portion 42 b and the second insertion portion 42 c on both side surfaces in the width direction of the insertion portion 42, respectively, toward the foreign object detection sensor 31. Each pressing portion 43 is continuously formed from one end to the other end in the longitudinal direction of the insertion portion 42 (that is, the longitudinal direction of the hollow insulator 32). Each pressing portion 43 extends away from the distal end surface of the second insertion portion 42 c from the proximal end toward the distal end, and the distal end of each pressing portion 43 faces the proximal end side of the insertion portion 42. . Further, each pressing portion 43 is formed so as to be separated from the central portion in the width direction of the insertion portion 42 as it goes from the base end to the tip end. Each pressing portion 43 has a columnar contact portion 43 a extending along the longitudinal direction of the insertion portion 42 at the distal end portion. The diameter of the contact portion 43a is formed to be slightly larger than the width of the portion of the pressing portion 43 that is closer to the base end than the contact portion 43a.

  In addition, the width of the first insertion portion 42b and the width of the pressing portion 43 are the same as the pair of pressing portions 43 folded so that the tip faces the foreign object detection sensor 31 side and is pressed against the first insertion portion 42b. The value is set such that the portion 42b can pass through the through hole 26 at the same time. Further, the width of the second insertion part 42c and the width of the pressing part 43 are such that the pair of pressing parts 43 folded so that the tip faces the tip side of the insertion part 42 and is pressed against the second insertion part 42c, It is set to a value at which the two insertion portions 42c cannot simultaneously pass through the through hole 26 (impossible to penetrate).

  In order to fix the foreign matter detection sensor 31 to the bracket 12 by the support portion 41, the second insertion portion 42 c of the support portion 41 is inserted into the through hole 26 from the outer opening portion 26 b of the through hole 26. Then, the support portion 41 is inserted into the through hole 26 until the support portion 41 penetrates the through hole 26. At this time, as the insertion portion 42 is inserted into the through hole 26, the pair of pressing portions 43 are pressed against the inner peripheral surface of the through hole 26, and the tip is directed to the foreign object detection sensor 31 side and the first insertion. It is folded so as to be pressed against the portion 42b. The pair of pressing parts 43 and the first insertion part 42b folded in this way pass through (through) the through hole 26 while being slightly elastically deformed. Then, the pair of pressing portions 43 are restored in the holding recess 23 and separated from the first insertion portion 42b, and the contact portions 43a at the distal ends of the pair of pressing portions 43 are located on both sides in the width direction of the through hole 26. Each pressing surface 25 is in press contact (that is, the state shown in FIG. 5 is reached). Further, when the pair of pressing portions 43 passes through the through hole 26, the fitting portion 42a is fitted into the through hole 26, and the outer peripheral surface 32a of the hollow insulator 32 is received on both sides in the width direction of the fitting portion 42a. It contacts the surfaces 27a and 27b. As a result, the pair of pressing portions 43 that press the pressing surface 25 and the hollow insulator 32 of the foreign object detection sensor 31 allow the portion between the receiving surfaces 27a and 27b and the pressing surface 25 in the holding portion 22 to pass through. 26 is sandwiched from both sides in the penetration direction. Accordingly, the foreign object detection sensor 31 is fixed to the bracket 12 by the support portion 41. That is, the sensor wire 13 is fixed to the bracket 12.

  As described above, the foreign matter detection sensor 31 is configured such that the bracket 12 is sandwiched from both sides in the penetration direction of the through hole 26 by the pair of pressing portions 43 that press the pressing surface 25 and the hollow insulator 32 of the foreign matter detection sensor 31. Is stably fixed to the bracket 12. And the support part 41 is inclined with respect to the attachment part 5b of the attachment surface 5a by being inserted into the through hole 26 inclined with respect to the holding-side contact surface 12b that contacts the attachment part 5b of the attachment surface 5a. Is inserted into the bracket 12. Specifically, the support portion 41 has a center line L2 (in the width direction of the insertion portion 42) of the support portion 41 in the cross section perpendicular to the longitudinal direction of the foreign object detection sensor 31 as it goes from the distal end to the base end of the support portion 41. A straight line passing through the center and extending in the protruding direction of the support portion 41 from the outer peripheral surface 32a is inclined so as to move away from the attachment portion 5b. Further, the support portion 41 is inclined so that the base end portion is on the outer peripheral side of the door panel 5 with respect to the tip end portion. Accordingly, the support portion 41 is inclined with respect to the attachment portion 5 b so that the foreign object detection sensor 31 is brought closer to the outer peripheral edge of the door panel 5. In other words, the support portion 41 is inclined with respect to the moving direction during the closing operation of the door panel 5 so that the foreign object detection sensor 31 approaches the outer periphery of the door panel 5 in a cross section orthogonal to the longitudinal direction of the foreign object detection sensor 31. Yes.

  Further, in the bracket 12 to which the foreign matter detection sensor 31 is fixed by inserting the support portion 41 into the through hole 26, the pair of receiving surfaces 27 a are provided on both sides of the support portion 41 along the circumferential direction of the foreign matter detection sensor 31. , 27b. Of the pair of receiving surfaces 27a and 27b, the first receiving surface 27a closer to the mounting portion 5b of the mounting surface 5a has a foreign object detection sensor 31 than the second receiving surface 27b farther from the mounting portion 5b. It is widely formed in the circumferential direction. That is, the circumferential width W1 of the first receiving surface 27a is formed wider than the circumferential width W2 of the second receiving surface 27b.

  Further, the foreign matter detection sensor 31 fixed to the bracket 12 is exposed to the outside at a range of about 270 ° opposite to the holding portion 22 (receiving surfaces 27a, 27b), and this exposed range is the foreign matter detection sensor. This is a detection range in which the foreign matter X (see FIG. 6) in contact with 31 can be detected. In this detection range, in the range where the external force applied to the foreign object detection sensor 31 passes through the radial center of the foreign object detection sensor 31 toward the receiving surface 27a or the receiving surface 27b, the external force is applied to the foreign object detection sensor 31. Can be received by the receiving surface 27a or the receiving surface 27b. Therefore, the foreign object detection sensor 31 is easily deformed by being sandwiched between the foreign object X and the receiving surface 27a or the receiving surface 27b.

  As shown in FIG. 2, the energization detection unit 14 is provided at the other end in the longitudinal direction of the foreign object detection sensor 31 (the end on the right side in FIG. 2 where the resistor 39 is provided). At the same time, a current is supplied to the electrode wire 33. As shown in FIGS. 2 and 5, in a normal state where an external force such as a pressing force is not applied to the foreign object detection sensor 31, the current supplied from the energization detection unit 14 to the electrode wire 33 is the electrode wire 35. And flows to the electrode wires 34 and 36 via the resistor 39. On the other hand, as shown in FIGS. 2 and 6, when an external force that crushes the foreign object detection sensor 31 in the diametrical direction is applied, the hollow insulator 32 at the site where the external force is applied is elastically deformed and the hollow insulator 32 The electrode wires 33 to 36 are bent in accordance with the elastic deformation, and at least one electrode wire of the electrode wires 33 and 35 and at least one electrode wire of the electrode wires 34 and 36 are contacted and short-circuited. Then, the current supplied from the energization detection unit 14 to the electrode wire 33 flows through the electrode wires 34 and 36 without passing through the resistor 39. Therefore, for example, when the current is supplied to the electrode wire 33 at a constant voltage, the current value changes. Therefore, the energization detection unit 14 detects the foreign object by detecting the change in the current value at this time. The foreign object X that has contacted the sensor 31 is detected. And if the electricity supply detection part 14 detects the change of this electric current value, ie, detects the foreign material X which contacted the foreign material detection sensor 31, it will output a foreign material detection signal to the door ECU51 mentioned later. In addition, when the external force with respect to the foreign material detection sensor 31 is removed, the hollow insulator 32 is restored, and the electrode wires 33 to 36 are also restored and become non-conductive.

  As shown in FIGS. 1A and 2, the electric back door device 2 includes a door ECU 51 that controls the opening / closing operation of the door panel 5 by the actuator 6 inside the door panel 5. The door ECU 51 includes a ROM (Read Only Memory), a RAM (Random Access Memory), and the like and has a function as a microcomputer, and is supplied with power from a battery (not shown) of the vehicle 1. Further, the door ECU 51 supplies a current to the energization detection unit 14 that is electrically connected to the door ECU 51. The door ECU 51 controls the actuator 6 based on various signals input from the operation switch 9, the position detection device 8, the energization detection unit 14, and the like.

Next, the operation of the electric back door device 2 configured as described above will be comprehensively described with reference to FIGS. 1, 2, and 6.
When an open signal is input from the operation switch 9, the door ECU 51 drives the actuator 6 to open the door panel 5. The door ECU 51 recognizes the rotation position of the door panel 5 based on the position detection signal input from the position detection device 8. In the present embodiment, the door ECU 51 counts the number of pulses of the position detection signal, and recognizes the rotational position of the door panel 5 based on the count value. When the door panel 5 is disposed at the fully open position where the rear opening 4 is completely opened, the door ECU 51 stops the actuator 6.

  On the other hand, when a close signal is input from the operation switch 9, the door ECU 51 drives the actuator 6 to close the door panel 5. Then, when the door panel 5 is disposed at the fully closed position where the rear opening 4 is completely closed, the door ECU 51 stops the actuator 6. When the foreign object X comes into contact with the foreign object detection sensor 31 and an external force is applied to the foreign object detection sensor 31 during the closing operation of the door panel 5, the hollow insulator 32 is elastically deformed in the foreign object detection sensor 31. At least one of the wires 33 and 35 and at least one of the electrode wires 34 and 36 are in contact with each other and are short-circuited. As a result, since the current value of the current supplied to the electrode wire 33 is changed, the energization detection unit 14 outputs a foreign object detection signal to the door ECU 51. When the foreign object detection signal is input, the door ECU 51 reverses the actuator 6 to open the door panel 5 by a predetermined amount and then stops the actuator 6.

Next, the operation of the fixing structure for the foreign matter detection sensor 31 of the present embodiment will be described.
The foreign matter detection sensor 31 is fixed to the bracket 12 by inserting the support portion 41 into the through hole 26 so as to be inclined with respect to the attachment portion 5b of the attachment surface 5a in a cross section orthogonal to the longitudinal direction of the foreign matter detection sensor 31. . Therefore, the foreign object detection sensor 31 can be disposed close to the attachment portion 5b.

As described above, the present embodiment has the following effects.
(1) The support portion 41 is inserted into the bracket 12 which is lightened by being formed of resin so as to be inclined with respect to the attachment portion 5b of the attachment surface 5a in a cross section orthogonal to the longitudinal direction of the foreign matter detection sensor 31. Thus, for example, the foreign object detection sensor 31 can be disposed closer to the attachment portion 5b than when the support portion 41 is inserted into the bracket 12 so as to stand upright with respect to the attachment portion 5b. Therefore, the height of the foreign matter detection sensor 31 from the attachment portion 5b (the amount of protrusion of the foreign matter detection sensor 31 from the attachment portion 5b) can be suppressed.

  (2) Of the pair of receiving surfaces 27a and 27b, the first receiving surface 27a closer to the mounting portion 5b of the mounting surface 5a is attached to the mounting portion 5b than the second receiving surface 27b farther from the mounting portion 5b. It is almost parallel to the shape. Therefore, by forming the first receiving surface 27a wider in the circumferential direction of the foreign object detection sensor 31 than the second receiving surface 27b, the foreign object detection sensor 31 can be viewed from the side opposite to the first receiving surface 27a. When a force in a direction substantially orthogonal to the mounting portion 5b (ie, a force in a direction substantially parallel to the moving direction of the door panel 5) is applied from the foreign object X, the foreign object detection sensor 31 is stabilized by the first receiving surface 27a. Can be supported. Therefore, the foreign matter detection sensor 31 can be elastically deformed well between the first receiving surface 27a and the foreign matter X.

  For example, when the circumferential width W2 of the second receiving surface 27b is set equal to the circumferential width W1 of the first receiving surface 27a, the height of the holding portion 22 (the mounting portion 5b in the holding portion 22). There is a possibility that the height from Therefore, as in the present embodiment, the first receiving surface 27a is formed wider in the circumferential direction of the foreign object detection sensor 31 than the second receiving surface 27b, so that the height of the holding portion 22 is suppressed and the foreign object is reduced. The detection sensor 31 can be supported. Moreover, it can suppress that the bracket 12 becomes heavy.

  (3) The foreign object detection sensor 31 can be disposed on the peripheral edge of the door panel 5 opposite to the peripheral edge of the rear opening 4 while suppressing the height of the foreign object detection sensor 31 from the attachment part 5b of the attachment surface 5a. . Therefore, it is possible to suppress the arrangement position of the foreign matter detection sensor 31 arranged on the door panel 5 from being restricted by the shape of the peripheral edge of the rear opening 4 in the vehicle body 3.

  (4) In the foreign object detection sensor 31, the height of the attachment surface 5a from the attachment portion 5b is suppressed. Accordingly, it is possible to obtain the foreign object detection device 11 with an increased degree of freedom in the position where the foreign object detection sensor 31 is arranged.

  (5) In order to suppress the height of the foreign matter detection sensor 31 from the attachment portion 5b, the length of the support portion in the protruding direction from the outer peripheral surface of the foreign matter detection sensor 31 is shortened, and the support portion is attached to the attachment portion 5b. It is conceivable to insert the bracket 12 so as to stand upright. However, in this case, since the support part for fixing the foreign object detection sensor 31 to the bracket 12 is shortened, the foreign object detection sensor 31 may not be stably fixed to the bracket 12. On the other hand, in this embodiment, by inserting the support portion 41 into the bracket 12 so as to be inclined with respect to the attachment portion 5b of the attachment surface 5a in a cross section orthogonal to the longitudinal direction of the foreign object detection sensor 31, the attachment portion 5b The height of the foreign matter detection sensor 31 is suppressed. Therefore, since the length of the support part 41 does not need to be shortened, the foreign object detection sensor 31 can be stably fixed to the bracket 12.

  (6) The support portion 41 is inclined so that the foreign matter detection sensor 31 approaches the outer peripheral edge of the door panel 5 in a cross section orthogonal to the longitudinal direction of the foreign matter detection sensor 31. Therefore, the foreign matter X existing between the peripheral portion of the rear opening 4 and the peripheral portion of the door panel 5 facing the peripheral portion of the rear opening 4 is likely to come into contact with the foreign matter detection sensor 31.

  (7) When the outer peripheral surface of the foreign object detection sensor 31 is in contact with the outer peripheral surface of the foreign object detection sensor 31, the receiving surfaces 27 a and 27 b having an arc shape with the same curvature as the cylindrical outer peripheral surface of the foreign object detection sensor 31 (that is, the outer peripheral surface 32 a of the hollow insulator 32). The foreign object detection sensor 31 is fixed to the bracket 12 more stably. Further, the foreign object detection sensor 31 is prevented from being displaced with respect to the bracket 12 by an external force applied from the foreign object X. Furthermore, the strength of the bracket 12 in the vicinity of the through hole 26 can be ensured while suppressing an increase in the thickness of the bracket 12.

In addition, you may change embodiment of this invention as follows.
In the above embodiment, the bracket 12 is attached to the attachment surface 5 a provided at the peripheral edge of the door panel 5 that faces the peripheral edge of the rear opening 4. However, the bracket 12 may be attached to a mounting surface 5 a provided at a portion facing the peripheral edge of the door panel 5 at the peripheral edge of the rear opening 4.

  In the above embodiment, the energization detection unit 14 supplies a current to the electrode wire 33 at a constant voltage, and outputs a foreign object detection signal when detecting a change in current value caused by contact between the electrode wires 33 to 36. However, the energization detection unit 14 may be configured to output a foreign object detection signal when detecting a change in voltage value caused by contact between the electrode wires 33 to 36.

  In the above embodiment, the first receiving surface 27a is formed wider in the circumferential direction of the foreign object detection sensor 31 than the second receiving surface 27b. However, the first receiving surface 27 a and the second receiving surface 27 b may be formed to have the same width in the circumferential direction of the foreign object detection sensor 31. The first receiving surface 27a may be formed narrower in the circumferential direction of the foreign object detection sensor 31 than the second receiving surface 27b. Moreover, in the said embodiment, the curvature of a pair of receiving surface 27a, 27b is equal to the curvature of the outer peripheral surface of the foreign material detection sensor 31 (namely, outer peripheral surface 32a of the hollow insulator 32). However, the curvature of the pair of receiving surfaces 27 a and 27 b may be smaller than the curvature of the outer peripheral surface of the foreign object detection sensor 31. Further, the bracket 12 does not necessarily have to include the receiving surfaces 27a and 27b.

  In the above embodiment, the support portion 41 is formed from the same material as the hollow insulator 32. However, the support portion 41 is formed of a material harder than the hollow insulator 32 (for example, a resin material harder than the hollow insulator 32, an elastically deformable metal material, etc.), and is fixed to the hollow insulator 32. Also good.

  In the above embodiment, the foreign object detection sensor 31 includes four electrode wires 33 to 36. However, it is sufficient that at least two electrode wires are provided in the foreign object detection sensor 31, and for example, six electrode wires may be provided.

The electrode wires 33 to 36 may be single wires made of annealed copper.
In the above embodiment, the foreign object detection sensor 31 includes a cylindrical outer peripheral surface by including the cylindrical hollow insulator 32. However, the shape of the outer peripheral surface of the foreign object detection sensor is not limited to a cylindrical shape, and may be a polygonal shape, an elliptical cylindrical shape, or the like. In this case, the shapes of the receiving surfaces 27 a and 27 b that are in contact with the outer peripheral surface of the foreign object detection sensor 31 are desirably shapes corresponding to the outer peripheral surface of the foreign object detection sensor 31.

  In the above embodiment, the support portions 41 are continuously formed along the longitudinal direction of the foreign object detection sensor 31, but may be formed at a plurality of locations in the longitudinal direction of the foreign object detection sensor 31. In this case, the through holes 26 are not limited to the slit shape as in the above embodiment, and may be formed at a plurality of locations in the longitudinal direction of the bracket 12.

  In the above embodiment, by inserting the support portion 41 into the through hole 26, the support portion 41 is inclined with respect to the attachment portion 5 b of the attachment surface 5 a and the foreign object detection sensor 31 is fixed to the bracket 12. Yes. However, the shape of the support portion 41 and the shape of the insertion portion (the through hole 26 in the above embodiment) into which the support portion 41 is inserted in the bracket 12 are not limited to those of the above embodiment. The support part 41 and the insertion part are inserted into the insertion part so that the support part 41 is inclined with respect to the attachment part 5b of the attachment surface 5a in a cross section orthogonal to the longitudinal direction of the foreign object detection sensor 31, whereby the foreign object detection sensor 31 is inserted. What is necessary is just to form so that it may be fixed to the bracket 12. For example, a recessed insertion portion that extends along the longitudinal direction of the bracket 12 may be formed in the bracket 12. The recessed insertion portion is recessed in a direction inclined with respect to the attachment portion 5b so that the support portion 41 to be inserted is inclined with respect to the attachment portion 5b. And the support part 41 is not provided with the press part 43, and may be press-fitted in a recessed insertion part.

  The foreign object detection sensor 31 may have a configuration including an elastically deformable cylindrical protective member that covers the outer periphery of the hollow insulator 32. In this case, the support part 41 is formed so as to protrude from the outer peripheral surface of the protection member.

  The foreign object detection sensor 31 may be configured not only to detect the foreign object X in contact with the foreign object detection sensor 31 by elastic deformation, but also to detect the capacitance between the adjacent foreign object X. In this case, the foreign object detection device 11 detects the foreign object X proximate to the foreign object detection sensor 31 based on the capacitance detected using the foreign object detection sensor 31.

  In the above embodiment, the foreign object detector 11 is provided in the electric back door device 2 that electrically opens and closes the door panel 5 that opens and closes the rear opening 4 formed in the rear portion of the vehicle body 3. However, in addition to the electric back door device 2, the foreign object detection device 11 may be provided in an electric door opening and closing device that electrically opens and closes an opening and closing body that opens and closes an opening provided in the vehicle 1. For example, the foreign object detection device 11 may be provided in an electric slide door device that electrically slides and moves a door panel (opening / closing body) that opens and closes an opening (alight entrance) provided on the side of the vehicle 1. The foreign object detection device 11 may be provided in a sunroof device that electrically opens and closes a roof panel (opening / closing body) that opens and closes an opening provided on the upper surface of the vehicle 1. In any case, the resin bracket 12 is fixed to the peripheral edge of the opening provided in the vehicle 1 or to the peripheral edge of the opening / closing body that opens and closes the opening. Is done.

The technical idea that can be grasped from the above embodiment and each of the above modifications will be described below.
(B) pre-Symbol support portion, and being inclined to the object detection sensor in a cross section perpendicular to the longitudinal direction of the object detection sensor to the mounting surface so as to approach the outer peripheral edge of the back door you. According to this configuration, the foreign matter existing between the peripheral portion of the rear opening and the peripheral portion of the back door facing the peripheral portion of the rear opening is likely to come into contact with the foreign matter detection sensor.

  DESCRIPTION OF SYMBOLS 3 ... Vehicle body, 4 ... Rear part opening as an opening part, 5 ... Door panel as an opening-closing body and a back door, 5a ... Mounting surface, 11 ... Foreign object detection apparatus, 12 ... Bracket, 27a ... 1st receiving as a receiving surface A second receiving surface as a receiving surface, 31 a foreign matter detection sensor, 32a an outer peripheral surface of a hollow insulator as an outer peripheral surface of the foreign matter detection sensor, 41 a support portion, and X a foreign matter.

Claims (4)

From a foreign object to a resin-made bracket attached to a peripheral surface of an opening formed in a vehicle body or a mounting surface provided on a peripheral edge facing the peripheral edge of the opening in an opening / closing body that opens and closes the opening A foreign matter detection sensor fixing structure for fixing a long foreign matter detection sensor for detecting the foreign matter by being elastically deformed by receiving an external force,
The support part protruding from the outer peripheral surface of the foreign object detection sensor is inserted into the bracket so that the support part is inclined with respect to the mounting surface in a cross section orthogonal to the longitudinal direction of the foreign object detection sensor. is fixed to,
The foreign object detection sensor has a cylindrical outer peripheral surface,
The bracket has an arc shape with the same curvature as the outer peripheral surface of the foreign object detection sensor on both sides of the support portion along the circumferential direction of the foreign object detection sensor, and contacts the outer peripheral surface of the foreign object detection sensor. Having a pair of receiving surfaces for receiving the external force via a sensor;
Of the pair of receiving surfaces, the receiving surface closer to the mounting surface is formed wider in the circumferential direction of the foreign object detection sensor than the receiving surface far from the mounting surface. Detection sensor fixing structure. In the fixing structure of the foreign matter detection sensor according to claim 1 ,
The bracket is attached to the attachment surface provided along a peripheral edge facing the peripheral edge of the opening in the back door as the opening / closing body that opens and closes the opening formed in the rear part of the vehicle body. A foreign substance detection sensor fixing structure characterized by A foreign matter detection sensor that is elastically deformed by an external force;
A bracket to which the foreign object detection sensor is fixed by the support part;
And a fixing structure for object detection sensor according to claim 1 or claim 2, foreign matter detection device and detecting foreign matter in contact with the object detection sensor by the elastic deformation of the object detection sensor. From a foreign object to a resin-made bracket attached to a peripheral surface of an opening formed in a vehicle body or a mounting surface provided on a peripheral edge facing the peripheral edge of the opening in an opening / closing body that opens and closes the opening A foreign matter detection sensor fixing structure for fixing a long foreign matter detection sensor for detecting the foreign matter by being elastically deformed by receiving an external force,
The support part protruding from the outer peripheral surface of the foreign object detection sensor is inserted into the bracket so that the support part is inclined with respect to the mounting surface in a cross section orthogonal to the longitudinal direction of the foreign object detection sensor. Is fixed to
The foreign object detection sensor has a cylindrical outer peripheral surface,
The bracket has an arc shape with the same curvature as the outer peripheral surface of the foreign object detection sensor on both sides of the support portion along the circumferential direction of the foreign object detection sensor, and contacts the outer peripheral surface of the foreign object detection sensor. Having a pair of receiving surfaces for receiving the external force via a sensor;
Of the pair of receiving surfaces, the receiving surface closer to the mounting surface has a shape closer to the mounting surface than the receiving surface farther from the mounting surface. Fixing structure for foreign object detection sensor.

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