JP3957849B2 - Cord switch - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a cord switch for detecting whether an external force such as a pressing force is applied within a predetermined range.
[0002]
[Prior art]
As a cord switch that is generally long and can detect that a pressing force has been applied by pressing any part along its longitudinal direction, a long tube-shaped outer skin portion having insulation and elasticity is used. There is a type of cord switch in which long electrodes are fixed to the inner peripheral portion of the outer skin portion while being separated from each other. In this type of cord switch, when the outer skin part is elastically deformed by the pressing force, the electrodes contact each other and short-circuit, so that the electrical resistance value of the electric circuit including the electrodes is abrupt compared to the state before the contact. Change. It is a structure which recognizes that the pressing force acted on the outer skin part by detecting this sudden change of an electrical resistance value.
[0003]
[Problems to be solved by the invention]
By the way, in such a cord switch, the terminal part of the electrode is drawn out from both ends of the outer skin part, and the lead wire is connected to the terminal part of the electrode. The code switch is electrically connected to the determination means for determining whether or not external pressure is applied to the outer skin part, or is electrically connected to other electrodes in the same outer skin part. For this reason, it is necessary to protect the connection part between the electrode and the lead wire from the load (external pressure) acting on the cord switch to prevent disconnection, deformation, etc. A protective portion formed of a synthetic resin material covers the end portion of the outer skin portion.
[0004]
However, when a cord switch in which such a protective portion is formed at the end of the outer skin portion is used by extending in a straight line, a long member that can abut against both protective portions presses the cord switch. However, since the elongate member is supported by both protection parts and does not press the outer skin part, and the outer skin part does not elastically deform, it may be impossible to detect that the elongate member has pressed the cord switch as a result.
[0005]
An object of the present invention is to obtain a cord switch that can protect the terminal portion of an electrode in consideration of the above-described fact, and can also detect a pressing force from a long pressing member.
[0006]
[Means for Solving the Problems]
  The cord switch according to claim 1 holds a long hollow outer skin portion that can be elastically deformed by external pressure and a plurality of long electrodes that are held inside the outer skin portion and contact each other by elastic deformation of the outer skin portion. Electrode holding part and end of the outer skin partIn the longitudinal direction of the outer skin partProvided outside,And a protection portion that has lower rigidity than the outer skin portion and the electrode holding portion and covers and protects terminal portions of the plurality of electrodes drawn out from the end portions of the outer skin portion.
[0007]
  According to the cord switch of the above configuration,An electrode holding part is provided inside the outer skin part, and a plurality of electrodes are held in the electrode holding part.When an external pressure that presses the outer skin portion from the outside acts, and the outer skin portion is elastically deformed by the external pressure, a plurality of electrodes provided inside the outer skin portion come into contact with each other. By detecting the change in the electrical physical quantity due to the contact of the electrodes, it can be determined whether or not an external pressure is applied to the outer skin portion.
[0008]
  Here, with this cord switch, the end of the outer skinIn the outer side in the longitudinal direction of the outer skin partIs provided with a protective part, and the terminal part of the electrode drawn out from the end part of the outer skin part and connected to a connecting member such as a cord or a lead wire is protected. Since the rigidity is lower than the holding part, even if the pressing member that presses the outer skin part and applies external pressure to the outer skin part is in a position where it abuts not only the outer skin part but also the protective part, the pressing member acts as the protective part. Without being supported, the pressing member elastically deforms the protective portion by the pressing force (external pressure), and further elastically deforms the outer skin portion. Furthermore, even after the pressing member that elastically deforms the outer skin part reaches a position where it can indirectly press and elastically deform the electrode holding part, the protective part is more rigid than the electrode holding part as described above. Since it is low, a press member is not supported by a protection part. Thereby, the electrode holding part can also be elastically deformed reliably, and a plurality of electrodes can be elastically deformed. Therefore, in this cord switch, it can detect that the pressing member in such a position pressed the cord switch.
[0009]
In this cord switch, the connection member connected to the terminal portion of the electrode may be configured to connect the electrodes in the outer skin portion, or a computer for determining whether the electrodes are in contact with each other. For example, the electrode may be electrically connected to a determination unit such as the above.
[0010]
  In addition, the rigidity of the protective part in the cord switchAnd electrode holderAs a structure for lowering the rigidity of the outer skin,And electrode holderThe protective part is formed of a material having lower rigidity than that of the material used for the material., Electrode holderAlthough the same material is used for the protective part, the structure that lowers the rigidity of the protective part than the rigidity of the outer skin part, such as making the protective part thin or porous or hollow, can be raised. It may be configured as follows.
[0011]
  The cord switch according to claim 2 holds a long hollow outer skin portion that can be elastically deformed by external pressure and a plurality of long electrodes that are held inside the outer skin portion and contact each other by elastic deformation of the outer skin portion. Electrode holding part and longitudinal end of the outer skin partIn the longitudinal direction of the outer skin partAs well as on the outside,The outer peripheral part is located on the side of the external pressure acting direction side more than the distance between the plurality of electrodes inside the outer skin part than the outer peripheral part of the outer skin part, and is pulled out from the end part of the outer skin part And a protection unit that covers and protects terminal portions of the plurality of electrodes.
[0012]
  According to the cord switch of the above configuration,An electrode holding part is provided inside the outer skin part, and a plurality of electrodes are held in the electrode holding part.When an external pressure that presses the outer skin portion from the outside acts, and the outer skin portion is elastically deformed by the external pressure, a plurality of electrodes provided inside the outer skin portion come into contact with each other. By detecting the change in the electrical physical quantity due to the contact of the electrodes, it can be determined whether or not an external pressure is applied to the outer skin portion.
[0013]
  Here, in this cord switch,Longitudinal directionAt the endAlong the longitudinal direction of the outer skinA protective part is provided on the outside, and the terminal part of the electrode that is pulled out from the end part of the outer skin part and connected to a connecting member such as a cord or lead wire is protected, but the outer peripheral part of this protective part is More than the dimension between the electrodes inside the outer skin part, it is located on the working direction side of the external pressure than the outer peripheral part of the outer skin part, that is, on the pressing direction side of the pressing member that presses the outer skin part and applies external pressure to the outer skin part Yes. For this reason, even if the pressing member is in a position where it abuts not only the outer skin part but also the protective part, the pressing member contacts the outer skin part before contacting the protective part, and the outer skin part is elasticized by the pressing force. Deform. Therefore, in this cord switch, it can detect that the pressing member in such a position pressed the cord switch.
[0014]
In this cord switch, the connection member connected to the terminal portion of the electrode may be configured to connect the electrodes in the outer skin portion, or a computer for determining whether the electrodes are in contact with each other. For example, the electrode may be electrically connected to a determination unit such as the above.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 7 shows a perspective view of the vehicle 12 in which the cord switch 10 according to the first embodiment of the present invention is applied to prevent the door panel 14 from being caught. FIG. 5 shows a view from the rear side of the vehicle 12. A perspective view is shown.
[0016]
As shown in FIG. 5, the vehicle 12 is provided with a door panel 14. The door panel 14 is formed so that it can be fitted into an opening 20 formed on the side wall 18 of the vehicle body 16 for passengers getting on and off a rear seat (not shown). When the opening 20 is closed, the outer surface of the door panel 14 and the outer surface of the side wall 18 are formed to be substantially flush with each other.
[0017]
A substantially U-shaped door frame 22 opened downward is integrally provided at an upper end portion of the door panel 14, and constitutes a window frame of a window glass 24 provided on the door panel 14. . Further, a window regulator (not shown) is provided inside the door panel 14 (for example, when the door panel 14 is constituted by a plurality of panels such as an inner panel and an outer panel), The window glass 24 can be moved up and down by operating a switch (not shown) provided in the vehicle 12 (for example, inside the door panel 14 or in the vicinity of the driver's seat).
[0018]
Further, as shown in FIG. 5, a bracket 30 extending inward in the vehicle width direction is integrally fixed to the lower end portion of the door panel 14. As shown in FIG. 6, a roller 32 is pivotally supported at the front end of the bracket 30, and the roller 32 further includes a guide rail 34 provided on the back side of a floor panel (not shown) of the vehicle 12. It is in contact with the outer surface in the vehicle width direction. The roller 32 can move along the longitudinal direction of the vehicle 12 while rolling by friction with the guide rail 34. However, as shown in FIG. 6, the outer end portion of the guide rail 34 in the vehicle width direction is inclined toward the inner side in the vehicle width direction on the front end side, and the roller 32 rolls along this inclined portion. Thus, the roller 32 moves inward in the vehicle width direction while moving toward the front side of the vehicle 12, and the door panel 14 slid along the front-rear direction of the vehicle 12 on the outer side in the vehicle width direction of the side wall 18 moves inward in the vehicle width direction. Displace and fit into the opening 20. In addition, the roller 32 moves to the rear side of the vehicle 12 and moves to the outer side in the vehicle width direction, and the door panel 14 fitted in the opening 20 moves to the outer side in the vehicle width direction of the side wall 18 to move in the longitudinal direction of the vehicle 12. It becomes possible to slide along.
[0019]
As shown in FIG. 6, a pulley 36 and a driving roller 38 that rotate around the vertical axis of the vehicle 12 are provided on the inner side in the vehicle width direction of the guide rail 34, and the endless belt 40 is wound around the pulley 36. Yes. The above-described bracket 30 is fixed to the endless belt 40. When the endless belt 40 is moved by the rotation of the endless belt 40, the roller 32 rolls along the guide rail 34, and the door panel 14 further moves. Yes.
[0020]
The drive roller 38 is connected to a slide actuator 50 (see FIG. 5) disposed on the back side of the floor panel, and is endless belt by a driving force of a slide motor 52 (see FIG. 8) provided on the slide actuator 50. 40 rotates. Further, as shown in FIG. 8, the slide actuator 50 includes a slide driver 54. The slide motor 52 is electrically connected to a computer 56 constituting control means via a slide driver 54, and an operation switch 58 (FIG. 5) provided near the driver's seat of the vehicle 12 via the computer 56. The computer 56 sends a predetermined signal to the slide driver 54 to operate the slide driver 54 by operating the operation switch 58 and operating the slide driver 54. 54 supplies power from the power supply 48 to the slide motor 52 or stops the supply of power to operate or stop the slide motor 52. As a result, the door panel 14 can be slid (opened / closed).
[0021]
That is, the opening / closing mechanism of the door panel 14 of the vehicle 12 employs a so-called automatic sliding door device that opens and closes by sliding the door panel 14 back and forth by the driving force of the slide motor 52.
[0022]
In addition, as shown in FIG. 8, the slide actuator 50 includes a position detection device 60. The position detection device 60 is provided corresponding to the rotation shaft of the slide motor 52, and can detect the rotation amount of the rotation shaft from the time when the slide motor 52 starts driving.
[0023]
The rotation of the rotary shaft of the slide motor 52 described above is transmitted to the output shaft via the reduction gear, and by this rotation of the output shaft, the drive roller 38 (see FIG. 6) rotates and the endless belt 40 rotates, and the door panel. 14 is a structure which slides. Therefore, the sliding amount of the door panel 14 is proportional to the rotation amount of the output shaft, and the rotation amount of the output shaft is proportional to the rotation amounts of the reduction gear and the rotation shaft. Therefore, the slide amount of the door panel 14 can be calculated by measuring the rotation amount of the rotary shaft from the start of the slide motor 52.
[0024]
As an example of the configuration of the position detecting device 60, a plurality of slits penetrating along the thickness direction of the rotating disk that rotates with the rotating shaft are formed at predetermined angles around the rotating shaft. The light emitting element and the light receiving element are arranged so as to sandwich the light receiving element, and only when the rotating disk rotates and the slit faces the light emitting element, the light receiving element emits light from the light emitting element and receives the light passing through the slit. There is a configuration for calculating the amount of rotation of the rotating shaft by counting the number of times of light reception. In addition, one sliding contact is brought into contact with a conductive plate such as a metal plate that rotates together with the rotating shaft, and the conductive pulse piece is radially projected from the outer peripheral portion of the conductive plate around the rotating shaft at a predetermined angle. The other sliding contact is arranged so that it can be contacted, and when the conductive plate rotates and the pulse piece comes into contact with the other sliding contact, both sliding contacts are conducted through the pulse piece and the conductive plate. There is also a configuration in which the amount of rotation of the rotary shaft is calculated by counting the number of conductions of both sliding contacts.
[0025]
In the present embodiment, the position detection device 60 is configured to detect the amount of rotation of the rotation shaft of the slide motor 52, but the configuration of the position detection device 60 is not limited to this, and the position of the door panel 14 is determined. Any configuration may be used as long as it is a configuration for direct or indirect detection. As an example of a configuration for detecting the position of the door panel 14, for example, a light emitting element is provided inside the door panel 14, and light is received at a position facing the light emitting element when the door panel 14 slides to a predetermined position on the side wall 18 of the vehicle body 16. A configuration is conceivable in which an element is provided to detect that the door panel 14 has been slid to a predetermined position when the light receiving element receives light emitted from the light emitting element.
[0026]
  On the other hand, as shown in FIG. 7, brackets 62 that extend inward in the vehicle width direction are provided on the middle and upper ends of the door panel 14 in the vertical direction. Rollers (not shown) are provided at the front ends of these brackets 62, and each guide groove of a guide rail 64 provided at an appropriate position of the vehicle 12.66It enters in a state of being prevented from slipping out and moves along the guide rail 64. That is, the door panel 14 is supported on the side wall 18 of the vehicle body 16 via the guide rail 64 and the bracket 62, and moves while being guided by the guide rails 34 and 64 by the driving force of the slide actuator 50 described above.
[0027]
Further, the guide rail 64 is also inclined inward in the vehicle width direction, like the guide rail 34. In this inclined portion, the roller of each bracket 62 moves along the guide groove 66 of the guide rail 64 toward the front of the vehicle 12 while moving inward in the vehicle width direction, or moves toward the rear of the vehicle 12 while moving outward in the vehicle width direction. Moving. During this movement, the door panel 14 moves in and out in the vehicle width direction.
[0028]
Further, as shown in FIG. 5, a closer actuator 70 is disposed inside the door panel 14. As shown in FIG. 8, the closer actuator 70 includes a closer driver 72 constituting a control means and a closer motor 74 as a driving means. The closer driver 72 is electrically connected to the computer 56, and the door panel 14 is slid in the direction in which the opening 20 is closed by the driving force of the slide motor 52 (that is, the front side of the vehicle 12). When the position detecting device 60 detects the sliding of the door panel 14 until the door panel 14 is just before the opening 20 is fully closed, the computer 56 operates the closer driver 72 to supply the closer motor 74 from the power source 48. It is driven by supplying power. As a result, the closer motor 74 operates a locking mechanism (not shown) of the door panel 14 such as a latch provided on the door panel 14 when the door panel 14 is fitted into the opening 20, and the locking mechanism is used in the opening 20. The door panel 14 is guided to a predetermined position where the door panel 14 can be locked.
[0029]
That is, in the automatic sliding door device of the vehicle 12, the door panel 14 is basically slid (opened / closed) by the slide motor 52 (sliding actuator 50), but the closer motor 74 (closer actuator 70 is just before the door panel 14 is fully closed. ) To move the door panel 14.
[0030]
Further, as shown in FIG. 7, a cord switch 10 is provided at the front end portion of the door panel 14. 2 and 3 show the internal structure of the cord switch 10, and FIG. 1 is a schematic side view of the door panel 14 and the cord switch 10 (viewed from the vehicle width direction outside of the vehicle 12). Figure) is shown. In FIG. 1, each part of the cord switch 10 and the door panel 14 is exaggerated and details are omitted in order to explain the configuration of the cord switch 10 according to the present embodiment more easily.
[0031]
  As shown in FIGS. 2 and 3, the cord switch 10 includes an electrode holding portion 84 that constitutes a sensor body 82 formed in an elongated shape from an elastic material having an insulating property such as rubber or a soft synthetic resin material. ing. The electrode holding portion 84 is elongated along the vertical direction of the door panel 14, and a cross hole 86 having a cross-shaped cross section (see FIG. 3) is formed along the longitudinal direction of the electrode holding portion 84. Yes. The cross hole 86 is gradually displaced around the center of the electrode holding portion 84 along the longitudinal direction of the electrode holding portion 84. Further, the electrode holding portion 84 is formed into a long string shape having flexibility by bringing conductive thin wires such as copper wires together, and the electrodes 88 and 90 constituting the sensor body 82 together with the electrode holding portion 84. , 92, 94 are provided. These electrodes 88 to 94 are spaced apart from each other through the cross hole 86 in the vicinity of the center of the cross hole 86 and are spirally arranged along the cross hole 86, and are integrally fixed to the inner periphery of the cross hole 86. Yes. Therefore,Electrode holding part 84When the electrode holding part 84 is elastically deformed to such an extent that the cross hole 86 is crushed, the electrodes 88 to 94 bend and the electrode 88 contacts the electrode 90 or the electrode 94. Alternatively, the electrode 92 contacts the electrode 90 or the electrode 94 and short-circuits. Also,Electrode holding part 84If this is restored, the electrodes 88 to 94 are also restored.
[0032]
Further, as shown in FIG. 1, the terminal portion on the lower end side of the electrodes 88 to 94 is drawn out from the lower end portion in the longitudinal direction of the electrode holding portion 84. Among these electrodes 88 to 94, one lead wire 104 drawn from the resistor 98 is fixed to the terminal portion of the electrode 90 by soldering or the like, and the terminal portion of the electrode 92 is drawn from the resistor 98. The other lead wire 106 is fixed by soldering or the like. Thereby, the terminal portions of the electrode 90 and the electrode 92 are electrically connected via the resistor 98.
[0033]
  One lead wire 122 drawn from the cord 120 is fixed to the terminal portion of the electrode 88 by soldering or the like, and the other lead wire 124 drawn from the cord 120 is soldered to the terminal portion of the electrode 94. It is fixed by attaching. As shown in FIG. 4, the cord 120 is electrically connected to a power source, and electricity from the power source is supplied to the electrodes 88 to 94 described above via the cord 120. In FIG. 4, the cord 120 is illustrated as being directly connected to the power source, but other connecting means may be interposed between the cord 120 and the power source. In particular, the present embodiment has a configuration in which the cord switch 10 is applied to an automatic sliding door device, and the door panel 14 is configured to slide and move as described above. With this configuration, the power source is the vehicle body 16When it is provided on the side (that is, when the door panel 14 moves relative to the power source), for example, it is better to connect the cord 120 and the power source via a sliding contact or the like. There is also.
[0034]
On the other hand, the terminal portion on the upper end side of the electrodes 88 to 94 is also drawn out from the upper end portion of the electrode holding portion 84. The end portions of the lead wires 126 are fixed to the terminal portions on the upper end sides of these electrodes 88 to 94 by soldering or the like, whereby the electrode 88 and the electrode 92 are electrically connected to each other. The electrode 94 is electrically connected. That is, as shown in the circuit diagram of FIG. 4, the current from the power source flows from the electrode 88 to the electrode 94 through the electrode 92, the resistor 98, and the electrode 90. When the electrode holder 84 is elastically deformed to such an extent that it is crushed and any of the electrodes 88 to 94 come into contact with each other and short-circuit, the current flows without passing through the resistor 98, so the resistance value of the entire circuit decreases and the current value increases. Here, as shown in FIG. 4, the current flowing out from the electrode 94 returns to the power source via the current detection element 132 as a determination means for transmitting a signal when a current of a predetermined value or more is detected. When any one of the electrodes 88 to 94 comes into contact and is short-circuited, thereby increasing the current, a signal is transmitted from the current detection element 132, and this signal is transmitted to the computer 56 (FIG. 5) electrically connected to the current detection element 132. 8).
[0035]
As shown in FIG. 1, the cord 120 connected to the lower ends of the electrodes 88 and 94 is extended from the lower end of a mold 150 as a protective portion to be described later, and the cord switch 10 at the front end of the door panel 14 is extended. It passes through a through-hole (not shown) formed below the lower end portion, is drawn into the door panel 14, passes through the door panel 14 and under the window glass 24, and is connected to the computer 56 and the power source. Has been.
[0036]
Further, as shown in FIG. 2, the outer side of the electrode holding portion 84 is a long outer skin portion formed of a rubber material having a lower rigidity than the electrode holding portion 84 or a flexible and elastically deformable synthetic resin material. A protector 136 is provided. The protector 136 includes a holding portion 138 that is cylindrical along the longitudinal direction thereof. The inner diameter dimension of the holding part 138 is substantially the same as the outer diameter dimension of the electrode holding part 84, and holds the sensor main body 82 inserted therein. Therefore, in practice, the holding portion 138 is elastically deformed by receiving external pressure, so that the electrode holding portion 84 is indirectly elastically deformed by receiving external pressure indirectly. A mounting portion 140 is formed so as to protrude from a part of the outer periphery of the holding portion 138 toward the outside in the radial direction.
[0037]
  As shown in FIG. 2, the attachment part 140 is formed substantially uniformly along the longitudinal direction of the holding part 138. Further, the mounting portion 140 is formed with a mounting groove 142 that opens toward the opposite side of the holding portion 138, and is a plate having an L-shaped cross section that is fixed in the mounting groove 142 to the inner surface of the door panel 14. Shaped bracket 146The cord switch 10 is fixed to the door panel 14 by fitting.
[0038]
Further, as shown in FIG. 1, a mold 150 is provided at the lower end portion of the electrode holding portion 84. The mold 150 is made of a thermoplastic rubber material or synthetic resin material that is insulative and less rigid than the protector 136 and the electrode holding portion 84, and is formed in substantially the same shape as the protector 136 described above. It is closely attached to the lower end of the. Thereby, the electrode holding part 84 and the lower end part of the protector 136 are sealed. Further, inside the mold 150, terminal portions of the electrodes 88 to 94 drawn from the lower end portion of the electrode holding portion 84, a resistor 98 connected to the electrodes 90 and 92, and leads of the electrodes 88 and 94 and the cord 120 The connecting portions with the wires 122 and 124 are enclosed, and the rear end portion in the vicinity of the lower end portion of the mold 150 (the protector 136 is attached to the bracket 1).46The lead wires 122 and 124 are pulled out as they are from the end of the vehicle 150 of the mold 150 in the state where they are attached to the mold 150, that is, in the direction orthogonal to the direction in which the electrodes 88 and 94 are pulled out. The mold 150 is in close contact with the terminal portion of the electrodes 88 to 94, the resistor 98 connected to the electrodes 90 and 92, and the periphery of the connecting portion between the electrodes 88 and 94 and the lead wires 122 and 124 of the cord 120. The member is held in place.
[0039]
A mold 150 is also provided on the upper end portion of the electrode holding portion 84. The upper mold 150 has a lower end portion that is in close contact with the outer periphery of the upper end portion of the protector 136, and seals the electrode holding portion 84 and the upper end portions of the protector 136. The upper mold 150 is filled with terminal portions of the electrodes 88 to 94 drawn from the upper end portion of the electrode holding portion 84 and conductive wires that connect these terminal portions, and are held at predetermined positions.
[0040]
Next, the operation and effect of the cord switch 10 will be described.
The cord switch 10 attached to the door panel 14 slides together with the door panel 14 when the door panel 14 slides by the driving force of the slide motor 52. When the door motor 14 starts to drive from the state in which the door panel 14 slides to the rear side of the vehicle 12 and the opening 20 is opened and the door panel 14 is slid to the front side of the vehicle 12, the front side of the door panel 14 If the foreign object 148 exists, the code switch 10 that slides together with the door panel 14 contacts the foreign object 148, and the code switch 10 presses the foreign object toward the front side of the vehicle 12. When the pressing reaction force F from the foreign substance at this time acts on the cord switch 10, the protector 136 and the electrode holding portion 84 are elastically deformed by the pressing reaction force F and any of the electrodes 88 to 94 inside the electrode holding portion 84. Touch each other. In this state, as described above, the electric resistance of the electric circuit (see FIG. 4) including the electrodes 88 to 94 changes, and the value of the current flowing through the circuit rapidly increases. When the current detection element 132 detects this increase in current value, the current detection element 132 transmits a signal, and the transmitted signal is sent to the computer 56. The computer 56 that has received the signal operates the slide driver 54 to reversely drive the slide motor 52 and slide the door panel 14 toward the rear side of the vehicle 12 again. Thereby, the foreign material 148 is prevented from being caught by the door panel 14.
[0041]
Incidentally, as shown in FIG. 1, in the cord switch 10, a mold 150 is provided at both end portions (that is, end portions in the longitudinal direction) of the upper and lower directions, and the electrodes 150 to 94 are formed by the mold 150. A connection portion between the terminal portion and the resistor 98, a connection portion between the lead wires 122 and 124, or a connection portion with the lead wire 126 is held. Thereby, each connection part mentioned above is protected from the load at the time of the attachment operation | work at the time of attaching the code switch 10 to the door panel 14, or the load at the time of the code switch 10 being pressed by the foreign material 148. For this reason, the disconnection by the said load does not arise.
[0042]
  Here, the outer shape of the mold 150 of the cord switch 10 is substantially the same as the outer shape of the protector 136, but the rigidity thereof is lower than the rigidity of the protector 136 and the electrode holding portion 84. Therefore, as shown in FIG. 1, a long foreign object 148 (for example, a ski board) that contacts both the upper and lower molds 150 contacts the code switch 10 and moves together with the door panel 14. The cord switch 10 presses the foreign matter 148, but the foreign matter 148 is not supported by both molds 150, but the mold 150 is elastically deformed by the pressing reaction force F, and the protector 1 is in the middle in the longitudinal direction.36Is elastically deformed. For this reason, this cord switch 10 can also detect the pressing reaction force (external pressure) F from such a long foreign matter 148, and therefore, the vehicle 12 to which this cord switch 10 is applied prevents the long foreign matter 148 from being caught. it can.
[0043]
Next, a second embodiment of the present invention will be described. Note that parts that are basically the same as those in the first embodiment are given the same reference numerals, and descriptions thereof are omitted.
[0044]
FIG. 9 is a side view schematically showing a cord switch 160 according to the second embodiment of the present invention. As shown in this figure, the cord switch 160 is provided with molds 162 at both ends in the vertical direction. These molds 162 have basically the same configuration as the mold 150 of the cord switch 10 according to the first embodiment, and the inside thereof includes terminal portions of the electrodes 88 to 94, resistors 98, lead wires 122, 124, The lead wire 126 and the like (not shown in FIG. 9) are accommodated and protected from the external pressure by the mold 162. However, as shown in FIG. 9, the mold 162 of the cord switch 160 has an end on the front side of the vehicle 12 that is equal to or larger than the width dimension of the cross hole 86 shown in FIG. 3, that is, the electrodes 88 to 94. More than the distance in the radial direction of the holding portion 84, it is located on the rear side of the vehicle 12 with respect to the front end portion of the protector 136.
[0045]
Therefore, as shown in FIG. 10, even if a long foreign object 148 that contacts both the upper and lower molds 162 contacts the cord switch 10, the foreign object 148 does not contact the mold 162 and contacts the protector 136. Touch. For this reason, when the cord switch 10 that moves together with the door panel 14 presses the foreign substance 148, the foreign substance 148 elastically deforms the protector 136 by the pressing reaction force F without being supported by both molds 150. For this reason, this cord switch 10 can also detect the pressing reaction force (external pressure) F from such a long foreign matter 148, and therefore, the vehicle 12 to which this cord switch 10 is applied prevents the long foreign matter 148 from being caught. it can.
[0046]
In the present embodiment, the rigidity of the mold 162 may be higher or lower than the rigidity of the protector 136 and the electrode holding portion 84. That is, as shown in FIG. 10, in the cord switch 160 according to the present embodiment, the protector 136 is elastically deformed before the long foreign material 148 comes into contact with the mold 162. Since the protector 136 is already elastically deformed at that time, the electrodes 88 to 94 are in contact with each other even if the mold 162 supports the foreign matter.
[0047]
  In each of the above embodiments, the electrode is held inside the protector 136.Part84 was inserted, but for example, electrode holding without using the protector 136Part84 may be used as the outer skin portion. However, if such a configuration is made to correspond to the configuration of the second embodiment, the end portion of the mold 162 on the front side of the vehicle 12 is held by an electrode.Part84 must be located on the rear side of the vehicle 12 relative to the end of the vehicle 12 on the front side.
[0048]
Furthermore, although each said embodiment was the structure which applied this cord switch 10 and 160 for pinching prevention of the automatic sliding door apparatus of the vehicle 12, the application range of this cord switch 10 and 160 is limited to this. It is not generally intended to be used as long as it applies a long cord switch.For example, in the case of a vehicle, for preventing pinching in an opening / closing device for opening and closing the roof panel of the vehicle, It may be used for warning of an open state of a trunk, a bonnet or the like, and may be used for prevention of pinching of an automatic door applied to a building, an elevator, or a railway vehicle, or for an open warning other than a vehicle.
[Brief description of the drawings]
FIG. 1 is a side view schematically showing the configuration of a cord switch according to a first embodiment of the present invention.
FIG. 2 is a perspective view showing the structure of the cord switch according to the first embodiment of the present invention.
FIG. 3 is a cross-sectional view showing the structure of the cord switch according to the first embodiment of the present invention.
FIG. 4 is a circuit diagram showing a structure of a cord switch according to the first embodiment of the present invention.
FIG. 5 is a perspective view from the rear of the vehicle using the cord switch according to the first embodiment of the present invention for an automatic sliding door device.
FIG. 6 is a perspective view showing a door panel drive mechanism.
FIG. 7 is a perspective view from the front of the vehicle using the cord switch according to the first embodiment of the present invention for an automatic sliding door device.
FIG. 8 is a block diagram showing an outline of a door panel pinching prevention device using the cord switch according to the first embodiment of the present invention.
FIG. 9 is a side view illustrating the outline of the configuration of a cord switch according to a second embodiment of the present invention.
FIG. 10 is a side view corresponding to FIG. 9 showing a state in which external pressure is applied.
[Explanation of symbols]
    10 Cord switch
    84 Electrode holder
    88 electrodes
    90 electrodes
    92 electrodes
    94 electrodes
  136 Protector (Outer skin)
  150 Mold (Protection part)
  160 Cord switch
  162 Mold (protection part)

Claims (2)

A long hollow skin that can be elastically deformed by external pressure;
An electrode holding part for holding a plurality of long electrodes held inside the outer skin part and in contact with each other by elastic deformation of the outer skin part;
Provided longitudinally outside of the sheath portion at an end portion of the outer skin portion, the outer skin portion and less rigid than the electrode holding part, the terminal portion of the plurality of electrodes drawn out from an end portion of the outer skin portion A protective part for covering and protecting;
Cord switch with A long hollow skin that can be elastically deformed by external pressure;
An electrode holding part for holding a plurality of long electrodes held inside the outer skin part and in contact with each other by elastic deformation of the outer skin part;
Together provided in the longitudinal direction outside of the outer skin portion in the longitudinal direction end portion of the outer skin portion, the outer peripheral portion is more than the size of the distance component between said plurality of electrodes inside of the outer skin portion than the outer peripheral portion of the outer skin portion A protective part that is located on the action direction side of the external pressure and covers and protects terminal portions of the plurality of electrodes drawn from the end part of the outer skin part,
Cord switch with

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