JP5188793B2 - Pinch detection device - Google Patents

Description

  The present invention relates to a pinch detection device for detecting whether or not a movable part such as a door pinches foreign matter.

  Patent Document 1 describes a pinching detection device that detects whether or not a foreign object has been pinched between a slide door and a body when the vehicle slide door is closed.

  Specifically, the pinch detection device includes an attachment member attached to the slide door, a cylindrical holding member formed of an elastic member integrally provided from the attachment member, and a sensor disposed inside the holding member. ing.

  When a foreign object is sandwiched between the slide door and the body, the holding member is pushed by the foreign object and deforms. Due to this deformation, a sensor arranged inside the holding member detects pinching.

Here, the hardness of the holding member is set low. For this reason, when a foreign object is inserted between the slide door and the body, the holding member is easily deformed, and the sensor can easily detect the insertion of the foreign object.
JP-A-11-2222036

  However, when the foreign matter caught is large, the holding member deforms gently as a whole, and it is conceivable that the sensor does not detect the foreign matter being caught.

  An object of the present invention is to reliably detect the inclusion of a foreign object in consideration of the above fact.

The pinching detection device according to claim 1 of the present invention is a pinching detection device that detects a pinching of a foreign substance by the movable portion and the fixed portion when the movable portion moves close to the fixed portion, and the movable portion And an attachment member attached to at least one of the fixed portions, and a cylindrical holding member supported by the attachment member and disposed between the movable portion and the fixed portion, and formed of an elastic member. A protector member, a pressure-sensitive sensor disposed inside the holding member, and detecting a foreign object pinching by the movable portion and the fixed portion based on the applied pressing force; and the sense from the inner peripheral surface of the holding member . And an inner peripheral protrusion having a convex shape toward the pressure sensor and having a hardness higher than that of the holding member .

  According to the said structure, the attachment member of a protector member is attached to at least one of a movable part and a fixed part. Moreover, the cylindrical holding member formed with the elastic member is supported by the attachment member and is disposed between the movable portion and the fixed portion.

Thus, by providing the inner peripheral protrusion, the pressure sensor can be locally deformed by pressing the pressure sensor locally. For this reason, compared with the case where a pressure sensor is pressed in the wide range, the detection load which detects pinching can be made low.
When a foreign object is sandwiched between the movable part and the fixed part, the holding member is pressed by the foreign object, and the inner peripheral protrusion provided on the inner peripheral surface of the holding member presses the pressure sensor. Here, since the hardness of the inner peripheral protrusion is higher than the hardness of the holding member, deformation of the inner peripheral protrusion is suppressed. In this way, by increasing the hardness of the inner peripheral protrusion and suppressing the deformation of the inner peripheral protrusion, the pressure sensor can be effectively deformed and the responsiveness of the pressure sensor can be improved.

  Here, the inner peripheral surface of the holding member is provided with a convex inner peripheral protrusion toward the pressure-sensitive sensor. When a foreign object is sandwiched between the movable part and the fixed part, the holding member is pressed by the foreign object, and the inner peripheral protrusion provided on the inner peripheral surface of the holding member locally presses the pressure sensor. .

  Thus, by providing the inner peripheral protrusion, the pressure sensor can be locally deformed by pressing the pressure sensor locally. For this reason, compared with the case where a pressure sensor is pressed in the wide range, the detection load which detects pinching can be made low.

The pinching detection device according to a second aspect of the present invention is characterized in that, in the first aspect, a convex outer peripheral projection is provided on the outer peripheral surface of the holding member.

  According to the above configuration, when a foreign object is sandwiched between the movable part and the fixed part, the holding member is pressed by the foreign object, and the inner peripheral protrusion provided on the inner peripheral surface of the holding member presses the pressure sensor. To do. Here, the outer peripheral surface of the holding member is provided with a convex outer peripheral protrusion. For this reason, even if the foreign matter sandwiched between the movable portion and the fixed portion is small, the foreign matter presses the outer peripheral protrusion and locally deforms the holding member, so that the pressure sensor detects the foreign matter being caught. .

  As described above, by providing the outer peripheral protrusion on the outer peripheral surface of the holding member, it is possible to detect the pinching even when the foreign matter is small.

The pinching detection device according to claim 3 of the present invention is the pinching detection device according to any one of claims 1 to 3, wherein the inner circumferential protrusion is formed in a spiral shape along the longitudinal direction of the holding member. Features.

  According to the above configuration, the inner circumferential protrusion is formed in a spiral shape along the longitudinal direction of the holding member. In this way, the inner peripheral projection can be easily formed by extrusion molding.

Entrapment detection apparatus according to claim 4 of the present invention, in claim 3, wherein the peripheral protrusion extends helically turning handed toward the first direction, the pressure-sensitive sensor, said retaining member And at least one pair of counter electrodes extending in a spiral shape by turning in the opposite direction to the inner circumferential protrusion in one direction along the longitudinal direction.

  According to the above configuration, the inner circumferential protrusion extends rightward in one direction and extends spirally. Further, the pressure sensor is provided with at least one pair of counter electrodes that spirally turn leftward in one direction along the longitudinal direction of the holding member.

  Thus, the inner protrusion and the counter electrode extend spirally in opposite directions, so that the inner protrusion and the counter electrode are arranged in a mesh shape, and the pressure-sensitive sensor can be located at any position along the longitudinal direction. External force can be detected reliably.

The pinch detection device according to claim 5 of the present invention is characterized in that, in claim 4 , the spiral pitch of the counter electrode and the spiral pitch of the inner peripheral projection are the same.

  According to the above configuration, the spiral pitch of the counter electrode and the spiral pitch of the inner peripheral protrusion are the same.

  In this way, by making the pitch the same, the positional relationship of the meshes of the counter electrode and the inner peripheral protrusion is uniform along the longitudinal direction, and the detection accuracy of the pressure sensitive sensor is made uniform along the longitudinal direction. Can do.

  The pinch detection device 10 according to the first embodiment will be described with reference to FIGS.

(overall structure)
As shown in FIG. 8, the pinch detection device 10 includes a sensor member 16.

  As shown in FIG. 4, the sensor member 16 includes a pressure-sensitive sensor 18 that constitutes a detection unit. The pressure-sensitive sensor 18 is provided with an outer skin part 20 that is formed of a resilient material having an insulating property, such as rubber or a soft synthetic resin material, and has a substantially circular cross section cut in a direction perpendicular to the longitudinal direction. ing. A cross hole 22 having a cross-shaped cross section is continuously formed in the outer skin portion 20 along the longitudinal direction of the outer skin portion 20.

  As shown in FIG. 3, the cross hole 22 is formed in a spiral shape around the center of the outer skin part 20 along the longitudinal direction of the outer skin part 20. Each end portion) is also displaced in a spiral shape along the longitudinal direction of the outer skin portion 20.

  In addition, four electrode wires 24, 26, 28, and 30 each serving as an electrode are provided inside the outer skin portion 20. Each of these electrode wires 24 to 30 is formed in a long string shape having flexibility by twisting conductive thin wires such as copper wires, and is formed by covering conductive rubber. . These electrode wires 24 to 30 are spaced apart from each other through the cross hole 22 in the vicinity of the center of the cross hole 22 and spirally arranged along the cross hole 22, and are integrally fixed to the inner periphery of the cross hole 22. ing. For this reason, when the outer skin portion 20 is elastically deformed, the electrode wires 24 to 30 bend, and particularly when the outer skin portion 20 is elastically deformed to such an extent that the cross hole 22 is crushed, the electrode wire 24 or the electrode wire 28 becomes the electrode wire 26 Conducts in contact with the electrode wire 30. Further, if the outer skin part 20 is restored, the electrode wires 24 to 30 are also restored. The spiral direction in which the electrode lines 24 to 30 extend will be described later.

  As shown in FIG. 4, the sensor member 16 includes a protector member 32 that constitutes the sensor member 16 together with the outer skin portion 20. The protector member 32 includes a cylindrical holding member 34 that constitutes a detection unit together with the pressure sensor 18.

  The diameter of the inner peripheral surface 34 </ b> A of the holding member 34 is made slightly larger than the outer diameter of the outer skin part 20, and a slight gap is provided between the holding member 34 and the outer skin part 20. Further, the entire holding member 34 is formed in a flexible sponge shape, and is easily elastically deformed when pressed from the outside, and transmits this pressing force to the inner skin portion 20. Details of the holding member 34 will be described later.

  Further, an attachment member 40 made of solid rubber having a hardness higher than that of the holding member 34 is formed at one end of the holding member 34 continuously with the holding member 34. The mounting member 40 includes a base and a mounting base 42 as a displacement suppression piece. The attachment base portion 42 is formed in a plate shape along the longitudinal direction, and is attached as a leg portion from both ends of the attachment base portion 42 in the width direction (arrow A direction shown in FIG. 4) toward the side opposite to the holding member 34. Legs 44 are formed. Thereby, the cross-sectional shape of the attachment member 40 is a concave shape that opens toward the side opposite to the holding member 34 as a whole. An insertion groove 46 is formed between the both mounting leg portions 44. Further, a clamping claw 48 is formed so as to protrude from the surface on the insertion groove 46 side of each mounting leg 44 toward the center side in the opening width direction of the insertion groove 46.

  Further, a metal core 50 made of a metal having high rigidity is inserted into the mounting member 40. The cored bar 50 includes a cored bar base 52 that constitutes a displacement suppression piece together with the mounting base 42.

  As shown in FIG. 6B, the metal core base 52 is a long flat plate in which the longitudinal direction, the width direction, and the thickness direction are along the longitudinal direction, the width direction, and the thickness direction of the mounting base 42, respectively. It is formed in a shape. The core metal base 52 is embedded in the mounting base 42. A plurality of cored bar legs 54 extend from one end in the width direction of the cored bar base 52 in the same direction as the extending direction of the mounting leg 44 with respect to the mounting base 42.

  Further, these cored bar legs 54 are formed in a flat plate shape whose longitudinal direction is along the thickness direction of the cored bar base 52 and whose width direction is along the longitudinal direction of the cored bar base 52. Are formed intermittently in a state in which the interval along the longitudinal direction is sufficiently shorter than each width dimension. In addition, a plurality of core metal legs 54 extend from the other end in the width direction of the core metal base 52 as well as one end in the width direction of the core metal base 52. A cored bar leg 54 extending from one end in the width direction of the cored bar base 52 is embedded in a mounting leg 44 formed from one end in the widthwise direction of the mounting base 42. The metal core leg portion 54 extending from the end portion is embedded in the attachment leg portion 44 formed from the other end portion in the width direction of the attachment base portion 42.

  On the other hand, as shown in FIG. 6A, the attachment member 40 is cut out at a predetermined position in the longitudinal intermediate portion of the holding member 34. The cutting range of the mounting member 40 along the longitudinal direction of the holding member 34 corresponds to one cored bar leg 54 or a plurality of cored bar legs 54 adjacent to each other along the longitudinal direction of the holding member 34. In this cut portion, not only the mounting member 40 but also the core metal 50 is cut.

  In addition, the outer peripheral portion of the holding member 34 on the side facing the direction orthogonal to both the longitudinal direction of the holding member 34 and the direction in which the attachment member 40 is formed with respect to the holding member 34 has a plurality of volume change allowing portions. The recesses 56 are intermittently formed at predetermined intervals along the longitudinal direction of the holding member 34. These concave portions 56 are opened at the outer peripheral portion of the holding member 34, and the holding member 34 is thin at the portion where the concave portions 56 are formed.

  On the other hand, in the sensor member 16, the electrode wires 24 to 30 are drawn from both longitudinal ends of the pressure-sensitive sensor 18.

  As shown in the circuit diagram of FIG. 7, on one end side of the pressure sensor 18, the electrode line 24 and the electrode line 28 are connected to each other, and the electrode line 26 and the electrode line 30 are connected to each other. On the other hand, on the other end side of the pressure sensor 18, the electrode line 26 and the electrode line 28 are connected to each other via a resistor 62. The electrode wire 24 is connected to the battery 64 at the other end of the pressure sensor 18, and the electrode wire 30 is grounded at the other end of the pressure sensor 18.

  That is, the pinch detection device 10 has a configuration in which the electrode wire 24, the electrode wire 28, the resistor 62, the electrode wire 26, and the electrode wire 30 are connected in series. When the outer skin portion 20 (see FIG. 4) is elastically deformed, when the electrode wire 24 or the electrode wire 28 and the electrode wire 26 or the electrode wire 30 come into contact with each other, a short circuit occurs at this contact portion, and the current passes through the resistor 62. It flows without. For this reason, the current value of the current flowing through the pinching detection device 10 changes. The current value of the current flowing through the pinching detection device 10 is detected by the current detection element 66 connected to the other end side of the electrode wire 30.

  As shown in FIG. 8, the current detection element 66 is connected to an ECU 68 as control means, and a current detection signal output from the current detection element 66 is input to the ECU 68.

  On the other hand, the ECU 68 is connected to the back door switch 70, and an operation signal output from the back door switch 70 is input to the ECU 68. The ECU 68 is electrically connected to a back door motor 74 as drive means via a driver 72. The driver 72 is connected to the battery 64 and controls energization to the back door motor 74 based on a control signal output from the ECU 68.

  The back door motor 74 is accommodated, for example, between the roof panel 76 of the vehicle body 14 shown in FIG. 9 and a roof head lining (not shown) provided below the roof panel 76.

  The output shaft of the back door motor 74 is mechanically connected to a back door panel 78 as a movable part via a speed reduction means such as a gear and a connection means such as a connection gear (both not shown). The back door panel 78 is rotated in the direction to open the rear gate 80 as the opening of the fixed portion by rolling, and the back door panel 78 is rotated in the direction to close the rear gate 80 by reverse driving. .

  Further, as shown in FIG. 8, a closer motor 84 as a driving means constituting the closer assembly is disposed in the vicinity of the rear end of the floor panel 82 (see FIG. 9) of the vehicle body 14. The closer motor 84 is connected to the ECU 68 via the driver 86 and is also connected to the battery 64, and controls energization to the closer motor 84 based on a control signal output from the ECU 68. The closer assembly includes a pair of junctions 88 and 90 in addition to the closer motor 84.

  As shown in FIG. 9, the junction 88 is provided on the back door panel 78, and the junction 90 is provided on the floor panel 82.

  When the back door panel 78 rotates in a direction to close the rear gate 80 until the rear gate 80 is fully closed by the driving force of the back door motor 74 (see FIG. 8), the junction 88 comes into contact with the junction 90 and becomes conductive. When the ECU 68 determines that the junction 88 and the junction 90 are conducted, the ECU 68 stops the battery 64 by a control signal output to the driver 72 and drives the closer motor 84 by the control signal output to the driver 86. The back door panel 78 is rotated to the position where the rear gate 80 is fully closed by the driving force of the closer motor 84, and the back door panel 78 is locked with the rear gate 80 fully closed by operating a locking means such as a latch.

  On the other hand, as shown in FIG. 5, the back door panel 78 includes an inner panel 92 positioned relatively on the vehicle interior side with the back door panel 78 closed on the rear gate 80 (see FIG. 9), and an inner panel 92. And the outer panel 94 positioned on the rear side (the vehicle outer side) of the inner panel 92 by a hem portion 96 formed by bending the vicinity of the outer peripheral portion of the outer panel 94 along the outer peripheral portion of the inner panel 92. By sandwiching the vicinity of the outer peripheral portion, the inner panel 92 and the outer panel 94 are integrated.

  Further, a support bracket 98 is provided along the hem portion 96 on the opposite side of the inner panel 92 from the outer panel 94. The support bracket 98 includes a flat plate portion 100. The flat plate portion 100 is formed in a flat plate shape that is elongated along the hem portion 96 and is integrally fixed to the inner panel 92 by fastening means such as bolts, screws, rivets, or welding. A flat plate-like support portion 102 is bent and erected from the end of the flat plate portion 100 on the hem portion 96 side. As shown in FIG. 4, the support portion 102 enters the inside of the attachment member 40 until the distal end abuts against the attachment base portion 42, and is elastically held by the holding claws 48.

(Configuration of holding part)
Here, the holding member 34 and the like of the protection member 32 provided in the sensor member 16 will be described.

  As shown in FIG. 1, the inner peripheral surface 34 </ b> A of the holding member 34 is provided with a convex inner peripheral protrusion 110 toward the pressure sensor 18. As shown in FIG. 2, the inner peripheral protrusion 110 is formed to spirally extend by turning rightward in one direction along the longitudinal direction of the holding member 34. The spiral pitch of the inner peripheral projection 110 is P1 as shown in FIG.

  On the other hand, as shown in FIG. 3, the electrode wires 24 to 30 provided in the pressure sensor 18 are arranged so as to extend spirally along the longitudinal direction of the holding member 34 as described above. Here, the electrode lines 24 to 30 are arranged to extend in a spiral shape by turning leftward in one direction along the longitudinal direction of the holding member 34. That is, the electrode wires 24 to 30 are arranged so as to turn in a direction opposite to the inner peripheral protrusion 110 and extend in a spiral shape. Moreover, the spiral pitch of the electrode line 24 and the electrode line 28 which opposes is the same (length) as the spiral pitch P1 of the internal peripheral protrusion part 110 formed in the internal peripheral surface 34A of the holding member 34, as FIG. 1 shows. P2. Here, the same means that the difference between the spiral pitch P1 and the spiral pitch P2 is ± 3 mm or less.

  In addition, although illustration is abbreviate | omitted, the spiral pitch of the electrode line 26 and the electrode line 30 which opposes is also set to P2.

(Action / Effect)
Next, the operation and effect of the present embodiment will be described.

  As shown in FIG. 9, when the back door switch 70 shown in FIG. 8 is closed while the back door panel 78 is rotated upward of the vehicle body 14 and the rear gate 80 is opened, the ECU 68 operates the driver 72. As a result, the back door motor 74 is driven in reverse, whereby the back door panel 78 is rotated downward (in the direction of arrow B shown in FIG. 9) of the vehicle body 14.

  Next, when the back door panel 78 rotates to a state immediately before the rear gate 80 is fully closed, the ECU 68 operates the driver 72 to stop the back door motor 74 and operates the driver 86 to drive the closer motor 84. The closer motor 84 rotates the back door panel 78 to the fully closed position by the driving force, and further operates a locking means such as a latch to lock the back door panel 78 in the fully closed state.

  In this manner, the back door panel 78 can be closed only by operating the back door switch 70. For example, when the back door panel 78 is closed, it is necessary to force the back door panel 78. Therefore, the back door panel 78 can be easily closed.

  By the way, as shown in FIG. 9, with the rear gate 80 opened, the portion corresponding to the inner peripheral edge of the rear gate 80, that is, the rear end of the side wall of the vehicle body 14, the upper surface of the lamp house, and the inner surface in the vehicle width direction, Furthermore, when the back door panel 78 is rotated (closed) so as to close the rear gate 80 when a foreign object is located on the rear end of the floor panel 82 so as to straddle the inside and outside of the vehicle body 14, The outer peripheral edge of the door panel 78 (that is, the tip of the hem portion 96) contacts the foreign matter. Accordingly, when the back door panel 78 presses the foreign matter as it is and presses the foreign matter against the inner peripheral edge of the rear gate 80, the foreign matter is caught.

  Here, as described above, when the outer peripheral edge of the back door panel 78 (that is, the tip of the hem portion 96) comes into contact with the foreign matter, the holding member 34 of the sensor member 16 comes into contact with the foreign matter, and the back door panel 78 is closed ( With the rotation, the holding member 34 presses the foreign matter toward the interior of the vehicle body 14. When the holding member 34 presses the foreign matter, a pressing reaction force from the foreign matter according to the pressing force at this time is applied to the holding member 34, and the holding member 34 is elastically deformed by the pressing reaction force.

  Due to the elastic deformation of the holding member 34, the outer skin portion 20 in the holding member 34 is elastically deformed, and the electrode wire 24 or the electrode wire 28 provided inside the outer skin portion 20 comes into contact with the electrode wire 26 or the electrode wire 30 and is short-circuited. To do. In this case, since the current flows without passing through the resistor 62, the current value of the current flowing through the electric circuit including the electrode lines 24 to 30 changes.

  The change in the current value is detected by the current detection element 66, and a detection signal (electric signal) is output from the current detection element 66 that has detected the change in the current value to the ECU 68. The ECU 68 to which the detection signal is input determines that the outer skin portion 20 has been deformed, that is, foreign matter has been caught, and operates the drivers 72 and 86 to drive the back door motor 74 and the closer motor 84 in the normal direction (that is, Then, the back door panel 78 is driven in the direction of raising). This eliminates foreign object pinching by the back door panel 78.

  Here, as described above, the inner peripheral protrusion 110 is provided on the inner peripheral surface of the cylindrical holding member 34 that holds the pressure-sensitive sensor 18 so as to rotate rightward in one direction and spirally extend. ing. Furthermore, the electrode wires 24 to 30 included in the pressure sensor 18 are arranged so as to turn leftward in one direction and extend spirally. Further, the spiral pitch P2 of the electrode line 24 and the electrode line 28 and the electrode line 26 and the electrode line 30 facing the spiral pitch P1 of the inner peripheral protrusion 110 is the same.

  In this way, by providing the inner peripheral protrusion 110 on the inner peripheral surface 34A, when the holding member 34 is elastically deformed by a foreign substance, the pressure sensor 18 can be locally pressed and deformed, so that it is wide. Compared with the case where the pressure sensor 18 is pressed in a range, the detection load for detecting pinching can be reduced.

  Further, since the inner peripheral protrusion 110 provided on the inner peripheral surface 34A of the cylindrical holding member 34 is formed in a spiral shape along the longitudinal direction of the holding member 34, the inner peripheral protrusion 110 is extruded. Can be easily molded.

  Moreover, since the inner peripheral protrusion 110 and the electrode wires 24 to 30 are arranged so as to turn in the opposite directions and extend spirally, the inner peripheral protrusion 110 and the electrode wires 24 to 30 are meshed. The pressure-sensitive sensor 18 can reliably detect the external force at any position along the longitudinal direction.

  Further, the spiral pitch P2 of the counter electrodes (electrode line 24 and electrode line 28 and electrode line 26 and electrode line 30) provided in a spiral shape and the spiral pitch P1 of the inner peripheral protrusion 110 provided in a spiral shape are the same. Therefore, the positional relationship between the counter electrode and the mesh of the inner peripheral protrusion 110 becomes uniform along the longitudinal direction, and the detection accuracy of the pressure sensor 18 can be made uniform.

  Next, a pinch detection device 120 according to a second embodiment of the present invention will be described with reference to FIG.

  In addition, about the same member as 1st Embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

  As shown in FIG. 10, in the second embodiment, unlike the first embodiment, the hardness of the inner peripheral protrusion 122 is higher than the hardness of the holding member 34.

  That is, the inner peripheral protrusion 122 is harder than the holding member 34. When the holding member 34 is pressed by a foreign object and the inner peripheral protrusion 122 presses the pressure sensor 18, deformation of the inner peripheral protrusion 122 is suppressed, so that the pressure sensor 18 can be effectively deformed. Thus, the responsiveness of the pressure sensor 18 can be improved.

  Next, a pinch detection device 130 according to a third embodiment of the present invention will be described with reference to FIGS.

  In addition, about the same member as 1st Embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

  As shown in FIG. 11, in the third embodiment, unlike the first embodiment, the outer peripheral surface 34 </ b> B of the holding member 34 is provided with an outer peripheral protrusion 132 convex toward the outside (outer side). . Specifically, as shown in FIG. 12, the outer peripheral protrusion 132 is formed to extend in a spiral shape, and is formed uniformly along the longitudinal direction of the holding member 34.

  For this reason, even when the foreign matter sandwiched between the back door panel 78 and the rear gate 80 is small, the foreign matter presses the outer peripheral projection 132 and locally deforms the holding member 34, so that the pressure sensor 18 detects the foreign matter. Detect pinching.

  As described above, by providing the outer peripheral protrusion 132 on the outer peripheral surface of the holding member 34, it is possible to detect the pinching of even a small foreign object.

It is sectional drawing which cut | disconnected the holding member with which the pinching detection apparatus which concerns on 1st Embodiment of this invention was equipped in the longitudinal direction. It is a perspective view of the holding member with which the pinch detection device concerning a 1st embodiment of the present invention was equipped. It is a perspective view of the pressure sensor with which the pinch detection device concerning a 1st embodiment of the present invention was equipped. It is a perspective view of the sensor member with which the pinch detection device concerning a 1st embodiment of the present invention was equipped. It is the perspective view which showed the state by which the sensor member with which the pinching detection apparatus which concerns on 1st Embodiment of this invention was equipped was attached to the back door panel. (A) (B) It is the perspective view which showed the corner part of the sensor member with which the pinching detection apparatus which concerns on 1st Embodiment of this invention was equipped. It is a circuit diagram which shows the structure of the pressure sensitive sensor with which the pinching detection apparatus which concerns on 1st Embodiment of this invention was equipped. It is a control block diagram of the pinch detection device according to the first embodiment of the present invention. 1 is a perspective view of a vehicle provided in a pinch detection device according to a first embodiment of the present invention. It is sectional drawing which cut | disconnected the holding member with which the pinching detection apparatus which concerns on 2nd Embodiment of this invention was equipped in the longitudinal direction. It is sectional drawing which cut | disconnected the holding member with which the pinching detection apparatus which concerns on 3rd Embodiment of this invention was equipped in the longitudinal direction. It is a perspective view of the sensor member with which the pinch detection device concerning a 3rd embodiment of the present invention was equipped.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Pinching detection apparatus, 18 ... Pressure sensor, 24 ... Electrode wire (electrode), 26 ... Electrode wire (electrode), 28 ... Electrode wire (electrode), 30 ... Electrode wire (electrode), 32... Protection member, 34 .. holding member, 40 .. mounting member, 78 .. back door panel (movable part), 80 .. rear gate (fixed part), 110. ..Inner peripheral projections, 122 ... Inner peripheral projections, 132 ... Outer peripheral projections

Claims (5)

When the movable part moves closer to the fixed part, it is a pinching detection device that detects the pinching of a foreign object by the movable part and the fixed part,
An attachment member attached to at least one of the movable part and the fixed part; a cylindrical holding member supported by the attachment member and disposed between the movable part and the fixed part; and formed of an elastic member; A protector member comprising:
A pressure-sensitive sensor that is disposed inside the holding member and detects a foreign object sandwiched by the movable portion and the fixed portion based on the applied pressing force;
An inner circumferential protrusion that is provided in a convex shape from the inner circumferential surface of the holding member toward the pressure-sensitive sensor, and has a higher hardness than the holding member ;
A pinch detection device comprising: The pinch detection device according to claim 1, wherein a convex outer circumferential protrusion is provided on the outer circumferential surface of the holding member . The pinching detection device according to claim 1, wherein the inner circumferential protrusion is formed in a spiral shape along a longitudinal direction of the holding member . The inner peripheral protrusion extends in a spiral by turning in one direction,
The pressure-sensitive sensor includes at least one pair of counter electrodes that spirally rotate in one direction along the longitudinal direction of the holding member in a direction opposite to the inner circumferential protrusion. The pinch detection device according to claim 3 . The pinching detection device according to claim 4, wherein the spiral pitch of the counter electrode and the spiral pitch of the inner peripheral projection are the same .

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