JP2010001715A - Opening and closing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an opening and closing device which can suppress deterioration of foreign matter detection sensitivity due to a support member. <P>SOLUTION: A sensor body 45 having an electrically conductive detection electrode 56 is supported at the forward end portion 5a of a door panel 5 by the support member 46. The support member 46 has a support portion 61 fixing the support member 46 to the forward end portion 5a of the door panel 5, and a holding portion 62 holding the sensor body 45 so as to expose it toward the peripheral edge of a doorway opened and closed by the door panel 5. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an opening / closing device that opens and closes an opening with an opening / closing body driven by a driving force such as a motor.

  Conventionally, an electric sliding door device (opening / closing device) that opens and closes a doorway (opening / closing member) provided on a side of a vehicle such as an automobile by sliding a door panel (opening / closing body) by a driving force of a motor or the like. Some have a function of preventing foreign matter from being caught between the door panel and the peripheral edge of the doorway when the door panel is closed.

For example, the electric slide door device described in Patent Document 1 includes a sensor unit that is fixed along the front end portion of the door panel. The sensor unit includes two detection electrodes arranged in parallel and having an insulator interposed therebetween, and a support member that covers these detection electrodes and is fixed to the front end of the door panel. The support member is made of an insulating synthetic resin material, and a metal core member for reinforcing the support member is embedded therein. When the conductive foreign matter comes close to the front end portion of the door panel during the closing operation of the door panel, the capacitance changes between the detection electrode and the foreign matter. Based on this change in capacitance, a foreign object close to the front end of the door panel is detected, and the door panel is stopped or opened.
JP 2005-227242 A

  However, since the detection electrode is covered with the support member, there is a support member between the foreign object to be detected and the detection electrode. And since a support member is for fixing a detection electrode with respect to a door panel, it is formed so that it may have a certain amount of thickness. For these reasons, there has been a problem that the detection sensitivity of the foreign matter is lowered by the support member existing between the foreign matter and the detection electrode.

  This invention is made | formed in view of such a situation, The objective is to provide the switchgear which can suppress the fall of the detection sensitivity of the foreign material resulting from a support member.

  In order to solve the above-mentioned problem, the invention according to claim 1 is provided with an opening / closing body for opening / closing an opening provided in the body to be opened / closed, a driving means for driving the opening / closing body, and a conductive detection electrode. A capacitance sensor that outputs a detection signal corresponding to the capacitance between the adjacent conductive foreign matter and the detection electrode, and a closed side that is an end portion on the front side during the closing operation of the opening / closing body The supporting member that supports the capacitance sensor with respect to either one of the end portion and the peripheral portion of the opening, and the opening that exists between the opening / closing body and the peripheral portion of the opening based on the detection signal An opening / closing apparatus comprising: detection means for detecting the presence of foreign matter; and control means for controlling the driving means to open or stop the opening / closing body when the foreign matter is detected by the detection means. The support member is connected to the closed end and the support member. An attachment portion that is fixed to one of the peripheral portions of the opening, and a holding portion that exposes and holds the capacitance sensor toward the other of the closed-side end portion and the peripheral portion of the opening. The gist is to have.

  According to this configuration, the capacitance sensor is supported by the support member with respect to either the closed-side end portion or the peripheral edge portion of the opening portion, so that the support-side end portion and the opening portion are not fixed. It will be in the state exposed toward the other one of the peripheral part. And since it is between the closed side edge and the peripheral edge of the opening that foreign matter may be caught during the closing operation of the opening / closing body, the capacitance sensor is in the direction where foreign matter detection is desired. Will be exposed. Therefore, when a conductive foreign substance exists between the closed end of the opening / closing body and the peripheral edge of the opening during the closing operation of the opening / closing body, the capacitance sensor is interposed between the foreign substance and the capacitance sensor. It is suppressed that the support member which holds is interposed. Therefore, it is suppressed that the detection sensitivity of a foreign material falls by a support member.

  According to a second aspect of the present invention, in the switchgear according to the first aspect, the support member is provided with a guard electrode that is grounded to suppress a change in the detection signal due to a disturbance, and the support member An adhesive layer for adhering the capacitance sensor to the holding unit between the capacitance sensor and the holding unit, and the adhesive layer being interposed between the detection electrode and the guard electrode; It is a summary.

  According to this configuration, by adhering the capacitance sensor to the holding portion with the adhesive layer, the distance between the capacitance sensor and the holding portion can be easily maintained, and as a result, the positional relationship between the detection electrode and the support member Is easily kept constant. Therefore, the distance between the guard electrode provided on the support member and the detection electrode is easily kept constant by facing the detection electrode via the adhesive layer. Further, by adhering the capacitance sensor to the holding portion with the adhesive layer, it is possible to suppress a gap from being generated between the capacitance sensor and the holding portion. From these things, it is suppressed that the distance between a detection electrode and a guard electrode varies with places, and the electrostatic characteristic of a capacitance sensor is stabilized.

The gist of a third aspect of the present invention is that the guard electrode is formed integrally with the support member in the switchgear according to the second aspect.
According to this configuration, since the guard electrode is formed integrally with the support member, the position of the guard electrode with respect to the support member is easily stabilized. Therefore, the distance between the detection electrode of the capacitance sensor held by the support member and the guard electrode can be more easily maintained. Therefore, the distance between the detection electrode and the guard electrode is further prevented from varying depending on the location, and the electrostatic characteristics of the capacitance sensor are further stabilized.

  According to a fourth aspect of the present invention, the support member includes an adhesive layer that adheres the capacitance sensor to the holding portion between the capacitance sensor and the holding portion, and the adhesive layer is electrically conductive. The gist of the invention is that it is made of an adhesive having a property and is grounded to be a guard electrode.

  According to this configuration, since the capacitance sensor is bonded to the holding portion by the adhesive layer, a gap is suppressed from being generated between the capacitance sensor and the holding portion. In addition, by using the adhesive layer in direct contact with the capacitance sensor as the guard electrode, the distance between the detection electrode of the capacitance sensor and the guard electrode can be easily kept constant. Therefore, the distance between the detection electrode and the guard electrode is suppressed from varying depending on the location, and the electrostatic characteristics of the capacitance sensor are stabilized. Furthermore, by using an adhesive layer that adheres the capacitance sensor to the holding portion as a guard electrode, compared to the case where a guard electrode made of a conductive metal plate or conductive rubber is provided on the support member separately from the adhesive layer, The number of parts can be reduced. Furthermore, a guard electrode can be easily formed by applying a conductive adhesive to the holding portion.

  According to a fifth aspect of the present invention, in the switchgear according to any one of the first to fourth aspects, the attachment portion is provided for either one of the closed side end portion and the peripheral portion of the opening portion. The gist of the present invention is to have a pressing portion that protrudes in the mounting direction of the support member.

  According to this configuration, when the support member is fixed to one of the closed side end portion and the peripheral edge portion of the opening, the pressing portion may be pressed in the mounting direction of the support member. Therefore, the supporting member can be fixed to either the closed end or the peripheral edge of the opening without applying a pressing force to the holding unit holding the capacitance sensor or the capacitance sensor. . As a result, the capacitance sensor is prevented from being damaged and from being accidentally dropped from the holding portion of the capacitance sensor.

  The gist of the invention according to claim 6 is the opening / closing device according to claim 5, wherein the pressing portion is provided on both sides of the holding portion when viewed from the mounting direction of the support member.

According to this configuration, by pressing the pressing portions on both sides of the holding portion, the support member can be more easily fixed to either the closed side end portion or the peripheral edge portion of the opening portion.
According to a seventh aspect of the present invention, in the opening / closing device according to any one of the first to sixth aspects, the body to be opened / closed is a vehicle body provided with the opening on a side, and the opening / closing The gist of the present invention is that the body is a door panel that slides in the front-rear direction of the vehicle body to open and close the opening.

  According to this configuration, the electrostatic capacity sensor is supported by the support member on either the closed side end portion of the door panel or the peripheral edge portion of the opening portion, whereby the closed side end portion to which the support member is not fixed and It will be in the state exposed toward either one of the peripheral parts of an opening part. For this reason, when there is a conductive foreign object between the closed end of the door panel and the peripheral edge of the opening during the closing operation of the door panel, the electrostatic capacity sensor is held between the foreign object and the electrostatic capacity sensor. It is suppressed that the supporting member which interposes is interposed. Therefore, in the opening / closing device that opens and closes the opening provided on the side of the vehicle body by the door panel that is slid in the front-rear direction of the vehicle body, a decrease in the detection sensitivity of the foreign matter due to the support member is suppressed.

  ADVANTAGE OF THE INVENTION According to this invention, the opening / closing apparatus which can suppress the fall of the detection sensitivity of the foreign material resulting from a support member can be provided.

DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, an embodiment of the invention will be described with reference to the drawings.
FIG. 1 is a perspective view showing a vehicle 2 equipped with an electric sliding door device 1 as an opening / closing device. As shown in FIG. 1, the vehicle 2 includes a vehicle body 3 made of a conductive metal material. On the left side surface of the vehicle body 3, an entrance / exit 4 is formed as a rectangular opening. The entrance / exit 4 is opened / closed by a door panel 5 formed of a conductive metal material and having a rectangular shape corresponding to the entrance / exit 4.

  The door panel 5 is attached to the vehicle body 3 via the operating mechanism 11 so as to be movable in the front-rear direction, and the door panel 5 is provided with a lock mechanism (not shown) such as a latch. This locking mechanism is for fixing the door panel 5 so that it cannot move relative to the vehicle body 3 when the doorway 4 is fully closed by the door panel 5. In the vicinity of the lock mechanism, half latch detection means (not shown) configured by a limit switch or the like is provided, and the half latch detection means detects half latch when the lock mechanism is in a half latch state. The signal is output to the control circuit device 71 (see FIG. 2) of the electric sliding door device 1.

  The operating mechanism 11 includes an upper rail 12, a lower rail 13, a center rail 14 provided on the vehicle body 3, and an upper arm 15, a lower arm 16, and a center arm 17 provided on the door panel 5 side.

  The upper rail 12 and the lower rail 13 are respectively provided at an upper part and a lower part of the entrance / exit 4 in the vehicle 2, and extend along the front-rear direction of the vehicle 2. The center rail 14 is provided at a substantially central portion of a portion of the vehicle 2 that is behind the entrance / exit 4 and extends along a substantially front-rear direction of the vehicle 2. Each of the rails 12 to 14 is linearly formed along the front-rear direction of the vehicle 2 from the rear end toward the front end side, and is curved so that the front end side faces the vehicle interior side from the middle.

  The arms 15 to 17 are fixed at predetermined positions on the upper, lower, and central portions of the door panel 5 on the vehicle interior side. The upper arm 15 is connected to the upper rail 12, the lower arm 16 is connected to the lower rail 13, the center arm 17 is connected to the center rail 14, and the arms 15 to 17 are connected to the rails 12 to 12. 14, the vehicle 2 can move in the front-rear direction.

  The lower arm 16 is moved in the front-rear direction by driving the drive mechanism 21. More specifically, a drive pulley 22 and a driven pulley 23 of the drive mechanism 21 that rotate about the vertical axis of the vehicle 2 are provided at a position closer to the vehicle interior side than the lower rail 13. An endless belt 24 is stretched around the driving pulley 22 and the driven pulley 23, and the end of the lower arm 16 is fixed to the endless belt 24. As shown in FIGS. 1 and 2, a slide actuator 25 constituting the drive mechanism 21 is connected to the drive pulley 22. The slide actuator 25 is disposed on the vehicle interior side, and includes a slide motor 26 and a transmission mechanism (not shown) that reduces the rotation of the slide motor 26 and transmits it to the drive pulley 22. When the slide motor 26 is driven and the drive pulley 22 rotates, the endless belt 24 is driven to rotate, the lower arm 16 moves in the front-rear direction, and the door panel 5 slides in the front-rear direction.

  A position detection device 27 that detects the rotation of the slide motor 26 is disposed in the slide actuator 25. The position detection device 27 is disposed to face the permanent magnet, for example, a permanent magnet provided to rotate integrally with a rotation shaft (not shown) of the slide motor 26 or a reduction gear (not shown) constituting the reduction mechanism. The Hall IC outputs a pulse signal corresponding to a change in the magnetic field of the permanent magnet due to the rotation of the permanent magnet as a rotation detection signal.

  A closer actuator 28 constituting the drive mechanism 21 is disposed in the door panel 5. The closer actuator 28 includes a closer motor 29 and a speed reduction mechanism (not shown) for reducing the rotation of the closer motor 29. When the closer motor 29 is driven, the door panel 5 is moved by the driving force of the closer motor 29 to a position where it can be locked by the locking mechanism.

  In addition, the electric sliding door device 1 includes an operation switch 31 for instructing opening / closing of the door panel 5. When the operation switch 31 is operated by a passenger or the like of the vehicle 2 so as to open the entrance / exit 4, an open signal for sliding the door panel 5 to open the entrance / exit 4 is given to the control circuit device 71. Output. On the other hand, when the operation switch 31 is operated by a passenger or the like so as to close the entrance / exit 4, the operation switch 31 outputs a closing signal to the control circuit device 71 to slide the door panel 5 so as to close the entrance / exit 4. . The operation switch 31 is provided in a predetermined part (dashboard or the like) in the vehicle interior, a surface of the door panel 5 on the vehicle interior side, a portable item (not shown) carried along with the ignition key, and the like.

  The electric sliding door device 1 includes a foreign matter detection unit 41 for detecting foreign matter existing between the front end portion 5a of the door panel 5 and the peripheral portion of the entrance / exit 4, and the foreign matter detection unit 41 includes a sensor. Unit 42, an ON-OFF detection unit 43, and a capacitance detection circuit 44.

  The sensor unit 42 is disposed along the front end portion in the traveling direction when the door panel 5 is closed, that is, along the front end portion 5 a of the door panel 5. As shown in FIG. 3A, the sensor unit 42 includes a cable-shaped sensor main body 45 and a support member 46 for fixing the sensor main body 45 to the door panel 5.

  As shown in FIG. 3B, the insulating layer 51 provided at the center of the sensor body 45 is formed of an elastically deformable insulator (soft synthetic resin material, rubber, etc.) having insulating properties and resilience. In addition, it has a long and substantially cylindrical shape. A spacing hole 51 a extending along the longitudinal direction of the insulating layer 51 is formed at the radial center of the insulating layer 51. The spacing hole 51 a is formed by separating the spacing recesses 51 b to 51 e that are recessed toward the radially outer side at four locations that are equiangularly spaced in the circumferential direction in the cross section along the radial direction of the insulating layer 51. By forming the shape connected by the portions, the cross-sectional shape in the direction orthogonal to the longitudinal direction of the insulating layer 51 forms a cross shape. The separation hole 51a extends along the longitudinal direction of the insulating layer 51 so that the four separation recesses 51b to 51e are spiral.

  In addition, inside the insulating layer 51, electrode lines 52a to 52d held by the insulating layer 51 are arranged. Each of the electrode wires 52a to 52d includes a flexible central electrode 53 formed by twisting conductive thin wires, and a cylindrical conductive coating layer 54 that has conductivity and elasticity and covers the outer periphery of the central electrode 53. It is composed of And each electrode line 52a-52d is arrange | positioned between the four space | gap recessed parts 51b-51e of the insulating layer 51 so that the spiral along the space | interval recessed parts 51b-51e may be made, respectively. In addition, the electrode lines 52 a to 52 d are embedded in the insulating layer 51 with a little more than half in the circumferential direction between the spaced recesses 51 b to 51 e.

  A conductive detection electrode 56 is provided on the outer periphery of the insulating layer 51. The detection electrode 56 has a cylindrical shape and covers the insulating layer 51 from one end to the other end in the longitudinal direction. For example, the detection electrode 56 is formed in a cylindrical shape by winding a plurality of metal wires around the outer periphery of the insulating layer 51. The outer periphery of the detection electrode 56 is covered with a cylindrical insulating film 57. The insulating coating 57 is formed of an insulating material to form a thin film and can be elastically deformed. Further, the insulating coating 57 is formed such that the length in the longitudinal direction is equal to the length in the longitudinal direction of the insulating layer 51.

  As shown in FIG. 2, the electrode line 52a and the electrode line 52c conduct at one end in the longitudinal direction (the right end in FIG. 2), and the electrode line 52b and the electrode line 52d also end in the longitudinal direction (see FIG. 2). 2 at the right end). The electrode line 52c and the electrode line 52d are electrically connected via a resistor 58 at the other end in the longitudinal direction (the left end in FIG. 2). Further, the other end in the longitudinal direction of the electrode line 52b (the left end in FIG. 2) is connected to the ground GND (grounded to the vehicle body 3), and the other end in the longitudinal direction of the electrode line 52a (FIG. 2). (The left end portion) is electrically connected to the ON-OFF detector 43. Then, power is supplied to the electrode line 52 a via the control circuit device 71 and the ON-OFF detector 43.

  As shown in FIG. 3A, the support member 46 that supports the sensor main body 45 with respect to the door panel 5 holds the sensor main body 45 and an attachment portion 61 for fixing the support member 46 to the door panel 5. The holding portion 62 is integrally formed.

  The attachment portion 61 is formed by embedding a reinforcing member 63 made of a conductive metal plate material in an attachment main body portion 64 made of an insulating resin material having elasticity. The insulating resin material constituting the attachment main body 64 also means rubber and elastomer, and the attachment main body 64 of the present embodiment is formed of an elastomer.

  The reinforcing member 63 has a shape in which a large number of bone members 63 a bent in a substantially U shape are connected in the vertical direction of the vehicle 2. The mounting main body 64 covers the outer peripheral surface of the reinforcing member 63 so that the cross-sectional shape orthogonal to the longitudinal direction is substantially U-shaped corresponding to the reinforcing member 63. The length of the attachment main body 64 in the longitudinal direction is substantially equal to the length of the sensor main body 45 in the axial direction. In addition, the attachment main body 64 has a substantially U-shaped cross-section, whereby an attachment groove 65 extending along the longitudinal direction of the attachment portion 61 is formed in a portion that is inside the bone member 63a.

  In addition, a pressing portion 66 that protrudes outward along the width direction of the mounting groove 65 is integrally provided at the end of the mounting body 65 in the opening side of the mounting groove 65. The pressing portions 66 are provided at two locations on the attachment main body portion 64 that are both sides of the opening portion of the attachment groove 65. Each of the two pressing portions 66 is a protrusion that extends along the longitudinal direction of the mounting portion 61, and each pressing portion 66 is a cross section cut along a direction perpendicular to the longitudinal direction of the mounting portion 61. The shape is a substantially triangular shape in which the width in the same direction as the width direction of the mounting groove 65 gradually increases from the bottom side of the mounting groove 65 toward the opening side. And these press parts 66 are attached when fixing the support member 46 to the front-end part 5a of the door panel 5 by making the shape which protruded outward in the direction orthogonal to the attachment direction with respect to the door panel 5 of the support member 46. It can be pressed in the direction. The “attachment direction” is a direction in which the sensor unit 42 (support member 46) is moved with respect to the door panel 5 when the sensor unit 42 is fixed to the front end 5a of the door panel 5. The mounting direction is a direction opposite to the recessed direction of the mounting groove 65 (that is, a direction from the bottom surface of the mounting groove 65 toward the opening of the mounting groove 65).

  The holding portion 62 is integrally formed at the end of the attachment main body 64 opposite to the opening of the attachment groove 65 and is formed of the same insulating resin material as that of the attachment main body 64. The holding portion 62 has an arc shape whose shape viewed from the longitudinal direction is open on the side opposite to the mounting body portion 64, that is, in the direction opposite to the mounting direction, and the size of the arc is the outer peripheral surface of the sensor body 45. It is the size corresponding to. The holding portion 62 covers the outer peripheral surface of the sensor main body 45 over a range slightly smaller than 180 °, and the central portion in the circumferential direction of the holding portion 62 is in the width direction of the mounting portion 61 (FIG. ) In the vehicle width direction and coincides with the central portion in the direction orthogonal to the mounting direction. The pressing portion 66 is the same as the width direction (the direction perpendicular to the longitudinal direction) of the holding portion 62 that holds the sensor main body 45 when the sensor portion 42 is viewed from the front side in FIG. Is the same in the vehicle width direction).

  An injection recess 67 is provided in the inner peripheral surface of the holding part 62. The injection recessed portion 67 is recessed in an arc shape along the holding portion 62, and its circumferential width is slightly smaller than the circumferential width of the holding portion 62, and the longitudinal direction of the holding portion 62. And extending from one end of the holding portion 62 to the other end. A conductive adhesive is injected (applied) into the injection recess 67 to form an adhesive layer 68, and the sensor main body 45 is bonded and fixed to the holding portion 62 by the adhesive layer 68. Has been. Since the holding portion 62 opens in the direction opposite to the direction in which the support member 46 is attached to the front end portion 5 a of the door panel 5, the sensor main body 45 is located at the front end of the door panel 5 of the support member 46 with respect to the holding portion 62. It is fixed in the same direction as the direction of attachment to the part 5a. The sensor body 45 fixed to the holding portion 62 by the adhesive layer 68 is in a state where a little more than half of the outer peripheral surface is exposed to the outside from the holding portion 62 on the side opposite to the attachment portion 61. The adhesive layer 68 is used as a guard electrode by being grounded (see FIG. 2).

  The support member 46 holding the sensor body 45 supports the sensor body 45 with respect to the door panel 5 by being fixed to a press-fit fixing portion 5 b provided at the front end portion 5 a of the door panel 5. The press-fit fixing portion 5 b extends in the front end portion 5 a of the door panel 5 so as to protrude to the front side of the door panel 5, and extends in the vertical direction of the vehicle 2. Further, the length of the press-fit fixing portion 5 b in the longitudinal direction (same as the vertical direction of the vehicle 2) is formed substantially equal to the length of the support member 46 in the longitudinal direction. The support member 46 is fixed to the front end portion 5 a of the door panel 5 by press-fitting the press-fit fixing portion 5 b into the attachment groove 65 of the attachment portion 61. That is, the sensor portion 42 is fixed to the door panel 5 by press-fitting the press-fit fixing portion 5 b into the mounting groove 65. When the sensor portion 42 is fixed to the front end portion 5a of the door panel 5, the pressing portions 66 provided on both sides of the mounting groove 65 are pressed in the mounting direction, that is, pressed toward the rear side of the door panel 5. The press-fit fixing portion 5b is press-fitted into the mounting groove 65. In a state where the support member 46 is fixed to the front end portion 5 a of the door panel 5, the attachment portion 61 is disposed on the rear side of the vehicle 2 with respect to the holding portion 62. The holding portion 62 covers and holds the rear side portion of the sensor main body 45 and faces the front side of the vehicle 2, that is, toward the portion facing the front end portion 5 a at the peripheral edge of the entrance / exit 4. Is exposed. Thereby, the sensor main body 45 is in a state in which a portion on the front side when the door panel 5 is closed is exposed from the holding portion 62.

  As shown in FIG. 2, the ON-OFF detection unit 43, together with the sensor body 45, comes into contact with a foreign object (not shown) existing between the door panel 5 and the peripheral edge of the entrance / exit 4 to detect the foreign object. It constitutes a pressure sensitive sensor. The ON-OFF detection unit 43 is disposed inside the door panel 5 and is connected to the ground GND.

  As shown in FIGS. 2 and 3 (b), in a normal state where no pressing force is applied to the sensor body 45, the current supplied to the electrode wire 52a is transmitted from the electrode wire 52a through the electrode wires 52c and 52d. When flowing to the electrode line 52b, the current flows through the resistor 58. On the other hand, as shown in FIG. 2 and FIG. 3C, when a pressing force is applied to the sensor body 45 from the direction of the arrow α, for example, the insulating coating 57, the detection electrode 56, and the insulating layer 51 are elastically deformed, One of 52a and electrode wire 52c and one of electrode wire 52b and electrode wire 52d come into contact with each other and are short-circuited. Then, the current flowing from the electrode line 52a to the electrode line 52b via the electrode lines 52c and 52d flows without passing through the resistor 58, and the voltage value between the electrode line 52a and the ground GND in a normal state is obtained. In contrast, the voltage value between the electrode line 52a and the ground GND changes. The ON-OFF detection unit 43 detects a change in the voltage value between the electrode line 52a and the ground GND at this time, and selects one of the electrode line 52a and the electrode line 52c, and any of the electrode line 52b and the electrode line 52d. A foreign object contact signal indicating that the voltage value has changed due to contact with one of them and short-circuiting each other is output to the control circuit device 71. For example, the ON-OFF detection unit 43 has a threshold value set based on a voltage value between the electrode line 52a and the ground GND in a normal state, and between the detected electrode line 52a and the ground GND. When the voltage value exceeds the threshold value, a foreign object contact signal is output. When the pressing force on the sensor main body 45 is removed, the insulating coating 57, the detection electrode 56, and the insulating layer 51 are restored, and the electrode lines 52a to 52d are also restored and become non-conductive.

  As shown in FIG. 2, the capacitance detection circuit 44 is electrically connected to the detection electrode 56, and together with the sensor main body 45, conductive foreign matter (not shown) close to the front end portion 5 a of the door panel 5. ) Is configured in a non-contact manner.

  The capacitance detection circuit 44 is disposed in the door panel 5 and is electrically connected to the control circuit device 71. The electrostatic capacitance detection circuit 44 detects the electrostatic capacitance between the detection electrode 56 and an object close to the detection electrode 56 (such as the earth, a human body or other conductive substance). That is, the capacitance detection circuit 44 detects the capacitance at the detection electrode 56 based on an electrical signal (detection signal) corresponding to the distance between the detection electrode 56 and the object. Then, the electrostatic capacitance detection circuit 44 outputs the detected electrostatic capacitance (detection value) to the control circuit device 71.

  The electric sliding door device 1 of the present embodiment is controlled by a control circuit device 71. The control circuit device 71 includes a ROM (Read Only Memory), a RAM (Random Access Memory), and the like, and has a function as a microcomputer. The control circuit device 71 is disposed, for example, in the vicinity of the slide actuator 25 and receives drive power from the battery 72 of the vehicle 2. Then, the control circuit device 71 includes the slide actuator 25 and the closer based on various signals input from the half latch detection means, the position detection device 27, the operation switch 31, the ON-OFF detection unit 43, and the capacitance detection circuit 44. The actuator 28 is controlled.

  The control circuit device 71 includes a determination circuit 71 a, and the determination circuit 71 a has a threshold value for detecting the proximity of the conductive foreign matter to the sensor body 45. Then, when the door panel 5 is closed, the determination circuit 71a compares the detection value output from the capacitance detection circuit 44 with a threshold value, and based on the comparison result, conductive foreign matter (that is, close to the sensor body 45) The presence / absence of a conductive foreign object adjacent to the front end 5a of the door panel 5 is determined. In the present embodiment, the determination circuit 71a determines that there is a foreign object close to the sensor body 45 when the detected value is larger than the threshold value, and outputs a foreign object proximity signal indicating that there is a foreign object close to the sensor body 45. To do. Note that the threshold value of the determination circuit 71a is determined by the capacitance detection circuit 44 when the door panel 5 is closed with no foreign matter between the peripheral edge of the entrance / exit 4 and the front end 5a of the door panel 5. It is set based on the actually detected capacitance.

Next, the operation of the electric sliding door device 1 configured as described above will be comprehensively described.
When an opening signal is input from the operation switch 31, the control circuit device 71 controls the slide motor 26 to open the door panel 5. And if the door panel 5 is arrange | positioned in the position where the entrance / exit 4 is fully opened, the control circuit device 71 will stop the slide motor 26. FIG. The control circuit device 71 recognizes the position of the door panel 5 based on the rotation detection signal input from the position detection device 27.

  In addition, when a closing signal is input from the operation switch 31, the control circuit device 71 drives the ON-OFF detection unit 43 and the capacitance detection circuit 44 and controls the slide motor 26 to close the door panel 5. To do. When a half latch detection signal is input during the closing operation of the door panel 5, the control circuit device 71 controls the closer motor 29 to move the door panel 5 to a position where the lock mechanism can be locked. When the doorway 4 is closed by the door panel 5, the control circuit device 71 stops the slide motor 26 and the closer motor 29.

  When conductive foreign matter exists between the entrance / exit 4 and the door panel 5 when the door panel 5 is closed, the distance between the sensor main body 45 exposed from the holding unit 62 and the foreign matter as the door panel 5 moves. Becomes shorter, and the detection value output from the capacitance detection circuit 44 becomes larger than the threshold value of the determination circuit 71a. The determination circuit 71a outputs a foreign object proximity signal when the detected value becomes larger than the threshold value. When the determination circuit 71a outputs the foreign object proximity signal, the control circuit device 71 reverses the slide motor 26 and opens the door panel 5 by a predetermined amount. In the sensor part 42, a conductive adhesive layer 68 provided between the sensor main body 45 and the holding part 62 serves as a guard electrode. Therefore, the adhesive layer 68 suppresses the capacitance detected using the detection electrode 56 from being affected by disturbance. That is, the adhesive layer 68 serving as a guard electrode suppresses unnecessary changes due to disturbance in the capacitance detected by the capacitance detection circuit 44.

  Further, when the door body 5 is closed, if the foreign body comes into contact with the sensor body 45 and the sensor body 45 is deformed, the ON-OFF detector 43 outputs a foreign body contact signal. When the foreign object contact signal is input, the control circuit device 71 reverses the slide motor 26 and opens the door panel 5 by a predetermined amount.

As described above, the present embodiment has the following effects.
(1) The sensor main body 45 is supported by the support member 46 with respect to the front end portion 5a of the door panel 5, so that the sensor main body 45 is exposed toward the peripheral edge of the entrance / exit 4 where the support member 46 is not fixed. And since it is between the front-end part 5a of the door panel 5 and the peripheral part of the entrance / exit 4 that a foreign material may be pinched | interposed at the time of the closing operation of the door panel 5, the sensor main body 45 wants to detect a foreign material. Will be exposed in the direction. Accordingly, when a conductive foreign object exists between the front end 5a of the door panel 5 and the peripheral edge of the entrance / exit 4 when the door panel 5 is closed, the sensor main body 45 is held between the foreign object and the sensor main body 45. It is suppressed that the supporting member 46 to be interposed is interposed. Accordingly, it is possible to suppress the foreign substance detection sensitivity from being lowered by the support member 46.

  (2) Since the sensor main body 45 is fixed to the holding portion 62 with an adhesive layer 68 made of an adhesive, the sensor main body 45 can be easily fixed to the holding portion 62. Moreover, since it is suppressed that a big load is added with respect to the sensor main body 45 at the time of fixing to the holding | maintenance part 62 of the sensor main body 45, damage to the sensor main body 45 is suppressed.

  (3) For example, when the sensor main body 45 is configured to be inserted into the cylindrical holding portion and held by the holding portion, the outer peripheral surface of the sensor main body 45 and the inner peripheral surface of the cylindrical holding portion There may be a gap between them. The distance between the guard electrode provided on the support member 46 and the detection electrode 56 is changed by changing the amount of the gap between the outer peripheral surface of the sensor body 45 and the inner peripheral surface of the cylindrical holding portion. If changed, the electrostatic characteristics of the sensor body 45 may become unstable. However, in the present embodiment, since the sensor main body 45 is bonded to the holding portion 62 by the adhesive layer 68, the occurrence of a gap between the sensor main body 45 and the holding portion 62 is suppressed. Further, by using the adhesive layer 68 that is in direct contact with the sensor main body 45 as a guard electrode, the distance between the detection electrode 56 of the sensor main body 45 and the guard electrode (that is, the adhesive layer 68) can be easily kept constant. Therefore, the distance between the detection electrode 56 and the guard electrode (that is, the adhesive layer 68) is prevented from varying depending on the place, and the electrostatic characteristics of the sensor body 45 are stabilized. As a result, it is possible to further suppress a decrease in foreign matter detection sensitivity due to the support member 46.

  (4) In the case where a guard electrode such as a conductive metal plate or conductive rubber is provided on the support member 46 separately from the adhesive layer 68 by using the adhesive layer 68 that bonds the sensor body 45 to the holding portion 62 as a guard electrode. In comparison, the number of parts can be reduced. Moreover, a guard electrode can be easily formed by injecting (coating) a conductive adhesive into the injection recess 67 of the holding portion 62. Furthermore, when the adhesive layer 68 is a guard electrode, the distance between the guard electrode and the door panel 5 can be easily changed simply by changing the shape (depth, width, etc.) of the injection recess 67, and the performance of the guard electrode Can be adjusted easily.

  (5) When the support member 46 is fixed to the front end portion 5 a of the door panel 5, the pressing portion 66 provided on the mounting portion 61 may be pressed in the mounting direction of the support member 46. Therefore, the support member 46 can be fixed to the front end portion 5 a of the door panel 5 without applying a pressing force to the holding portion 62 that holds the sensor main body 45 and the sensor main body 45. As a result, the sensor main body 45 is prevented from being damaged and the sensor main body 45 is prevented from being accidentally detached from the holding portion 62.

  (6) The pressing portion 66 is formed in the attachment portion 61 at a position on both sides of the holding portion 62 in the width direction when the support member 46 is viewed from the attachment direction of the support member 46 to the door panel 5. Therefore, by pressing the pressing portions 66 on both sides of the holding portion 62 that holds the sensor main body 45, the support member 46 can be more easily fixed to the front end portion 5a of the door panel 5.

  (7) When the sensor main body 45 is fixed to the holding portion 62, the sensor main body 45 is fixed to the holding portion 62 in the same direction as the mounting direction of the support member 46 to the front end portion 5 a of the door panel 5. Therefore, even if a force applied to the support member 46 when the support member 46 is fixed to the front end portion 5 a of the door panel 5 is applied to the sensor body 45, the sensor body 45 is unlikely to fall off the holding portion 62.

  (8) The holding portion 62 that holds the sensor main body 45 in an exposed state toward the peripheral edge of the entrance / exit 4 is formed of the same insulating resin material as the mounting main body portion 64 that constitutes the mounting portion 61. Accordingly, since the holding portion 62 and the mounting body portion 64 have the same dielectric constant, the holding portion 62 and the mounting portion 61 do not adversely affect the electrostatic characteristics of the sensor body 45. As a result, it is possible to further suppress a decrease in foreign matter detection sensitivity due to the support member 46.

In addition, you may change embodiment of this invention as follows.
-The shape and number of the press parts 66 provided in the attachment part 61 of the support member 46 are not restricted to the thing of the said embodiment. The press part provided in the attachment part 61 should just be the shape protruded so that a press in the attachment direction of the support member 46 with respect to the front-end part 5a of the door panel 5 is possible. For example, the pressing portions 92 provided on the attachment portion 61 of the support member 91 shown in FIG. 4 are provided on both sides of the attachment portion 61 in the width direction (the same in the vehicle width direction in FIG. 4) and are held on the attachment portion 61. It is formed so that the width gradually increases from the portion closer to the portion 62 toward the opening side of the mounting groove 65 and protrudes in the width direction. Further, for example, the pressing portion 102 provided on the attachment portion 61 of the support member 101 shown in FIG. 5 protrudes in a substantially arc shape on both sides in the width direction of the attachment portion 61 (the same in the vehicle width direction in FIG. 5). Further, for example, the pressing portion 112 provided in the attachment portion 61 of the support member 111 shown in FIG. 6 is arranged in the width direction (the same in the vehicle width direction in FIG. 6) from the end portion of the attachment portion 61 on the opening portion side. ), And has a hook shape extending so as to protrude. Even if it does in this way, the effect similar to (4) and (5) of the said embodiment can be acquired. Further, the pressing portion may be provided only on one side in the width direction with respect to the attachment portion 61. Furthermore, the pressing portion is not limited to the protrusion along the longitudinal direction of the attachment portion 61, and may be provided intermittently in the longitudinal direction of the attachment portion 61. Furthermore, like the support member 121 shown in FIG. 7, the attachment part 61 does not need to be provided with a press part.

  The shape of the injection recess 67 provided in the support member 46 so as to inject an adhesive for bonding and fixing the sensor main body 45 is not limited to the shape of the above embodiment. The injection recess 67 may have any shape that can fix the sensor main body 45 to the holding portion 62 with the adhesive injected into the inside. For example, the injection recess 130 shown in FIG. 8 is recessed from the inner peripheral surface of the holding portion 62 to the mounting portion 61. Even if it does in this way, the effect similar to (2) and (3) of the said embodiment can be acquired. Further, as shown in FIG. 9, without providing the injection recess 67, an adhesive layer 68 is formed by applying an adhesive to the entire inner peripheral surface of the holding portion 62 to bond the sensor body 45 to the holding portion 62. It may be fixed.

  In the above embodiment, the adhesive layer 68 made of a conductive adhesive is grounded and used as a guard electrode. However, the guard electrode may be provided separately from the adhesive layer 68. In this case, an adhesive having no conductivity may be used for the adhesive layer 68. For example, in the sensor unit 42 shown in FIG. 3A, the reinforcing member 63 may be grounded and used as a guard electrode. In this case, the sensor main body 45 is bonded to the holding portion 62 by the adhesive layer 68, whereby the distance between the sensor main body 45 and the holding portion 62 can be easily kept constant, and the positional relationship between the detection electrode 56 and the support member 46 is eventually increased. Is easily kept constant. Accordingly, the reinforcing member 63 as a guard electrode provided on the support member 46 is opposed to the detection electrode 56 through the adhesive layer 68 (that is, the adhesive layer 68 is interposed between the detection electrode 56). The distance to the detection electrode 56 is easily kept constant. Further, by bonding the sensor main body 45 to the holding portion 62 with the adhesive layer 68, it is possible to suppress a gap from being generated between the sensor main body 45 and the holding portion 62. For these reasons, the distance between the detection electrode 56 and the reinforcing member 63 as the guard electrode is suppressed from varying depending on the location, and the electrostatic characteristics of the capacitance sensor are stabilized.

  Alternatively, a conductive resin material (conductive rubber or the like) may be integrally formed on the insulating resin material constituting the support member 46, and a portion made of the conductive resin material may be grounded to be used as a guard electrode. For example, in the support member 46 illustrated in FIG. 3A, a guard electrode made of a conductive resin material may be provided between the adhesive layer 68 and the reinforcing member 63. Further, for example, in FIG. 3A, the portion where the adhesive layer 68 is provided may be made of a conductive resin material and molded integrally with the holding portion 62. In this case, an adhesive layer is interposed between the guard electrode and the sensor body 45, and the sensor body 45 and the guard electrode are disposed on both sides of the adhesive layer. If it does in this way, the position of the guard electrode with respect to the support member 46 becomes easy to be stabilized because the guard electrode was integrally formed with the support member 46. Therefore, the distance between the detection electrode 56 of the sensor main body 45 held by the support member 46 and the guard electrode is more easily maintained. Therefore, the distance between the detection electrode 56 and the guard electrode is further suppressed from varying depending on the place, and the electrostatic characteristics of the capacitance sensor are further stabilized.

  In addition, since the adhesive layer 68 serving as the guard electrode in the above embodiment is made of an adhesive, the guard electrode made of a conductive resin material is formed integrally with the holding portion 62 of the support member 46. Molded integrally with the insulating resin material to be formed. However, the guard electrode may be provided separately from the support member 46 as long as it is provided on the support member 46. For example, a through hole penetrating in the longitudinal direction of the support member 46 may be formed, a conductive metal plate material may be inserted into the through hole, and the metal plate material may be grounded to serve as a guard electrode. The support member 46 may not be provided with a guard electrode.

  In the above embodiment, the conductive adhesive layer 68 serves as a guard electrode by being grounded. However, the adhesive layer 68 serving as a guard electrode may be kept at the same potential as the detection electrode 56 or a constant voltage by a buffer amplifier. Even in this case, it is possible to suppress an unnecessary change due to a disturbance in the capacitance detected by the capacitance detection circuit 44. As a result, erroneous detection of foreign matter is suppressed.

  In the above embodiment, the sensor body 45 is fixed to the holding portion 62 by the adhesive layer 68 made of a conductive adhesive injected into the injection recess 67 provided in the holding portion 62. However, the adhesive for fixing the sensor body 45 may not have conductivity. The sensor body 45 may be provided integrally with the holding portion 62 by a method other than adhesion. For example, the support member 46 may be formed by extrusion molding, and the sensor main body 45 may be held by the holding portion 62 simultaneously with the extrusion molding.

  -The shape of the holding | maintenance part 62 and the exposure range of the sensor main body 45 from the holding | maintenance part 62 are not restricted to the thing of the said embodiment. The holding portion 62 has a shape that exposes and holds the sensor main body 45 toward the peripheral portion of the entrance / exit 4 where there is a possibility of foreign matter being sandwiched between the front end portion 5a of the door panel 5 to which the support member 46 is fixed. I just need it. Therefore, for example, the holding part 62 may be configured in a circular arc shape so as to cover the outer peripheral surface of the sensor main body 45 over a range smaller than the above embodiment. Moreover, the holding | maintenance part 62 may be formed not only in circular arc shape but U-shape. In the example shown in FIG. 10, the holding portion 132 of the support member 131 has a substantially U-shape, and includes a holding recess 133 that opens in the direction opposite to the mounting direction. The holding recess 133 is formed so that its width (width in the vehicle width direction) gradually increases from the opening toward the bottom, and the cross-sectional shape in the direction perpendicular to the longitudinal direction of the holding portion 132 is It has a substantially trapezoidal shape. Further, the insulating coating 135 of the sensor main body 134 held by the holding portion 132 is provided with an engaging convex portion 135a protruding to the outer peripheral side. The engagement convex portion 135a has a substantially trapezoidal shape in which the cross-sectional shape in the direction orthogonal to the longitudinal direction gradually increases as the distance from the center of the sensor main body 134 increases, and the shape corresponding to the holding concave portion 133 It has become. The sensor main body 134 is held by the holding portion 132 when the engaging convex portion 135a is inserted into the holding concave portion 133 and engaged, and the engaging convex portion 135a and the holding concave portion 133 are engaged. Thus, the circumferential position of the sensor body 134 with respect to the support member 131 is determined. As described above, when the engagement convex portion 135 a provided on the outer periphery of the insulating coating 135 is configured to engage with the holding concave portion 133 provided on the holding portion 132, the sensor body 45 is attached to the support member 131 in the circumferential direction. Can be easily identified.

  In the above embodiment, when a foreign object proximity signal or a foreign object contact signal is output when the door panel 5 is closed, the control circuit device 71 reverses the slide motor 26 and opens the door panel 5 by a predetermined amount. However, the control circuit device 71 may stop the door panel 5 by stopping the slide motor 26 when a foreign object proximity signal or a foreign object contact signal is output when the door panel 5 is closed.

  In the above embodiment, the foreign matter detection unit 41 is provided with a pressure sensor function that detects foreign matter by contacting the foreign matter existing between the front end 5a of the door panel 5 and the peripheral edge of the entrance 4. ing. However, the foreign matter detection unit 41 is configured to include only the function of a contact capacitance type proximity sensor that detects foreign matter existing between the front end portion 5a of the door panel 5 and the peripheral portion of the entrance / exit 4 in a non-contact manner. There may be. In this case, the ON-OFF detection unit 43 is omitted.

  In the above embodiment, the sensor unit 42 is fixed to the front end 5 a of the door panel 5. However, the sensor unit 42 may be fixed to the peripheral portion of the entrance 4. In this case, the sensor unit 42 is fixed to a portion facing the front end 5 a of the door panel 5 in the front-rear direction of the vehicle 2 at the peripheral edge of the entrance 4.

  In the above-described embodiment, the present invention has been described by taking the electric slide door device 1 that opens and closes the entrance / exit 4 provided on the side of the vehicle body 3 by sliding the door panel 5 in the front-rear direction of the vehicle 2 as an example. However, the present invention may be embodied not only in the electric sliding door device 1 but also in an opening / closing device that opens and closes the opening by the driving force of the motor. For example, the present invention may be embodied in a power window device that raises and lowers a window glass of a vehicle by a driving force of a motor. In this case, the sensor part 42 is arrange | positioned at the peripheral part of the opening part opened and closed by the window glass or the window glass. Further, for example, the present invention may be embodied in an opening / closing device that opens and closes an opening provided at the rear of a vehicle with a flip-up back door, and an opening / closing device that opens and closes a train door.

The perspective view of the vehicle provided with the electric slide door apparatus. The block diagram which shows the electric constitution of an electric slide door apparatus. (A) is sectional drawing of the front end part vicinity of a door panel, (b) And (c) is sectional drawing of a sensor main body. Sectional drawing of the sensor part of another form. Sectional drawing of the sensor part of another form. Sectional drawing of the sensor part of another form. Sectional drawing of the sensor part of another form. Sectional drawing of the sensor part of another form. Sectional drawing of the sensor part of another form. Sectional drawing of the sensor part of another form.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 3 ... Vehicle body as a to-be-opened / closed body, 4 ... Entrance / exit as an opening part, 5 ... Door panel as an opening / closing body, 5a ... Front end part as a closed side end part, 11 ... Actuation mechanism which comprises a drive means, 21 ... Drive Drive mechanism constituting means, 45, 134... Sensor body as capacitance sensor, 46, 91, 101, 111, 121, 131... Support member, 56... Detection electrode, 61. 63, reinforcing members as guard electrodes, 66, 92, 102, 112 ... pressing parts, 68 ... adhesive layer, 71 ... control circuit device as control means, 71a ... determination circuit as detection means.

Claims (7)

An opening and closing body for opening and closing an opening provided in the opening and closing body;
Driving means for driving the opening and closing body;
A capacitance sensor that has a conductive detection electrode and outputs a detection signal corresponding to the capacitance between the adjacent conductive foreign matter and the detection electrode;
A support member that supports the capacitance sensor with respect to any one of a closed-side end portion that is a front-side end portion of the opening and closing body and a peripheral edge portion of the opening;
Detecting means for detecting the presence of the foreign matter existing between the opening and closing body and a peripheral edge of the opening based on the detection signal;
Control means for controlling the drive means to open or stop the opening and closing body when the foreign matter is detected by the detection means;
A switchgear comprising:
The support member includes an attachment portion that fixes the support member to one of the closed side end portion and the peripheral edge portion of the opening, and the electrostatic capacity sensor is connected to the closed end portion and the peripheral edge portion of the opening portion. And a holding portion that is exposed and held toward the other. The switchgear according to claim 1,
The support member is provided with a guard electrode that is grounded and suppresses a change in the detection signal due to disturbance,
The support member includes an adhesive layer that adheres the capacitance sensor to the holding portion between the capacitance sensor and the holding portion.
The switchgear characterized in that the adhesive layer is interposed between the detection electrode and the guard electrode. The switchgear according to claim 2, wherein
The guard electrode is formed integrally with the support member. The switchgear according to claim 1,
The support member includes an adhesive layer that adheres the capacitance sensor to the holding portion between the capacitance sensor and the holding portion.
The switchgear characterized in that the adhesive layer is made of a conductive adhesive and is grounded to serve as a guard electrode. The switchgear according to any one of claims 1 to 4,
The opening / closing apparatus, wherein the attachment portion includes a pressing portion that protrudes so as to be able to be pressed in an attachment direction of the support member with respect to any one of the closed-side end portion and a peripheral portion of the opening portion. The switchgear according to claim 5,
The pressing device is provided on both sides of the holding portion when viewed from the mounting direction of the support member. The switchgear according to any one of claims 1 to 6,
The body to be opened and closed is a vehicle body provided with the opening on the side,
The opening / closing device, wherein the opening / closing body is a door panel that is slid in the front-rear direction of the vehicle body to open / close the opening.

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