JP6563095B1 - ON / OFF detection device and vehicle interior parts - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an ON / OFF detection device and an interior part for a vehicle capable of accurately detecting continuous hitting input. An ON / OFF detection device 101 that detects ON / OFF of an input unit (switch 10) using a load sensor 20 and sets a threshold value with respect to a previous detection value of the load sensor 20. Based on the comparison result of the setting unit 33, the threshold set by the threshold setting unit 33 and the current detection value of the load sensor 20, and the comparison result of the comparison unit 34, the input unit (switch 10). An ON / OFF determination unit 35 that determines ON / OFF. [Selection] Figure 5

Description

  The present invention relates to an ON / OFF detection device that detects ON / OFF of an input unit using a load sensor and an interior part for a vehicle.

  Conventionally, an apparatus that detects ON / OFF of an input unit by comparing a detection value of a load sensor with a threshold value is known (see, for example, Patent Document 1).

  Patent Document 1 discloses a configuration in which, when a load load exceeding a load reference value is detected by the load detection unit, the control unit determines that the input object displayed on the display unit has been pressed. . Thereby, when the input which raises / lowers a pressing force continuously with respect to the value of a load reference | standard is performed, an input can be made to recognize as an input input repeatedly.

Japanese Patent No. 5160683

  However, the apparatus described in Patent Document 1 has a problem that continuous input cannot be detected when an input that continuously raises or lowers the pressing force with a pressing force exceeding the load reference value is performed.

  SUMMARY OF THE INVENTION An object of the present invention is to provide an ON / OFF detection device and an interior part for a vehicle that can accurately detect continuous hitting input.

In order to achieve the above object, an ON / OFF detection device according to the present invention is an ON / OFF detection device that detects ON / OFF of an input unit using a load sensor, and the previous detection value of the load sensor. Based on the comparison result of the threshold value setting unit for setting the threshold value, the comparison value set by the threshold value setting unit and the current detection value of the load sensor, and the comparison result of the comparison unit, An ON / OFF determination unit that determines ON / OFF of the input unit, and when the previous determination result of the ON / OFF determination unit is ON of the input unit, the threshold setting unit sets the threshold to When the previous detection value of the load sensor is set lower than the previous detection value of the load sensor, and the previous determination result of the ON / OFF determination unit is OFF of the input unit, the threshold value setting unit sets the threshold value to be lower than the previous detection value of the load sensor. that set high And butterflies.

  In the vehicle interior part of the present invention, the ON / OFF detection device is applied to an input unit provided in an interior material installed in the vehicle.

  With the ON / OFF detection device and the vehicle interior part of the present invention configured as described above, it is possible to accurately detect a continuous hit input.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing a configuration of a vehicle interior part of Example 1. It is a perspective view which shows the structure of the interior material of the vehicle interior component of Example 1. FIG. FIG. 3 is a cross-sectional view illustrating a configuration of a touch position sensor according to the first embodiment. 1 is a cross-sectional view illustrating a configuration of a load sensor according to a first embodiment. FIG. 3 is a functional configuration diagram illustrating a functional configuration of the ON / OFF detection device according to the first embodiment. It is a graph explaining the relationship between the repulsion force of an interior material, and a load. 3 is a flowchart illustrating ON / OFF determination processing according to the first exemplary embodiment. 3 is a flowchart illustrating a continuous hit process according to the first embodiment. 3 is a timing chart illustrating the flow of ON / OFF determination processing according to the first embodiment. It is a timing chart explaining the flow of ON / OFF judgment processing of another example.

  Hereinafter, an embodiment for realizing an ON / OFF detection device and a vehicle interior part according to the present invention will be described based on Example 1 shown in the drawings.

  The ON / OFF detection device according to the first embodiment is applied to an instrument panel as an interior part for a vehicle provided in a vehicle interior of the vehicle.

[Configuration of interior parts for vehicles]
FIG. 1 is a perspective view illustrating a configuration of a vehicle interior part of the first embodiment. FIG. 2 is a perspective view showing the configuration of the interior material of the vehicle interior part of the first embodiment. Hereinafter, based on FIG.1 and FIG.2, the structure of the vehicle interior component of Example 1 is demonstrated. The width direction of the vehicle is defined as the width direction X.

  As shown in FIG. 1, an instrument panel 1 as a vehicle interior part includes a finisher 2 as an interior material.

  As shown in FIG. 2, the finisher 2 includes, for example, a first switch 10 a to a tenth switch 10 j for operating an air conditioner (air conditioner) as a switch 10 as an input unit.

  The first switch 10a, the second switch 10b, the ninth switch 10i, and the tenth switch 10j are switches that adjust the temperature of the air conditioner. The third switch 10c is a switch for turning on / off the rear defogger. The fourth switch 10d is a switch for turning on / off the front defroster. The fifth switch 10e and the sixth switch 10f are switches that adjust the air volume of the air conditioner. The seventh switch 10g is a switch for switching between inside and outside air. The eighth switch 10h is a switch for turning auto on / off.

  A touch position sensor 11 and a load sensor 20 are attached to the back surface of the finisher 2.

  The touch position sensor 11 is provided corresponding to each switch 10 and detects that the user's finger has touched each switch 10. That is, the first touch position sensor 11a is provided at a position corresponding to the first switch 10a. A second touch position sensor 11b is provided at a position corresponding to the second switch 10b. A tenth touch position sensor 11j is provided at a position corresponding to the tenth switch 10j.

  The load sensor 20 includes a first load sensor 20a and a second load sensor 20b, and detects a load applied to each switch 10.

  The first load sensor 20a is provided between the fourth switch 10d and the fifth switch 10e and below the fourth switch 10d and the fifth switch 10e. The second load sensor 20b is provided between the sixth switch 10f and the seventh switch 10g and below the sixth switch 10f and the seventh switch 10g.

[Configuration of touch position sensor]
FIG. 3 is a cross-sectional view illustrating a configuration of the touch position sensor 11 according to the first embodiment. Hereinafter, based on FIG. 3, the structure of the touch position sensor 11 of Example 1 is demonstrated.

  As shown in FIG. 3, the touch position sensor 11 is provided on the back surface of the finisher 2 corresponding to each switch 10. The touch position sensor 11 has a plate-like electrode 12 disposed on the substrate 14.

  The touch position sensor 11 configured as described above measures the capacitance value at a period of, for example, 10 [ms]. When the user's finger F touches the switch 10, the capacitance value measured by the touch position sensor 11 changes. From this change in the capacitance value, it can be understood which switch 10 the user's finger F touches.

[Configuration of load sensor]
FIG. 4 is a cross-sectional view illustrating a configuration of the load sensor 20 according to the first embodiment. Hereinafter, based on FIG. 4, the structure of the load sensor 20 of Example 1 is demonstrated.

  As shown in FIG. 4, the load sensor 20 includes a plate-like first electrode 21, a plate-like second electrode 22, a spacer 23, and a substrate 24.

  The first electrode 21 is provided on the back surface of the finisher 2. The second electrode 22 is provided on the substrate 24. The spacer 23 is provided between the finisher 2 and the substrate 24, and is arranged so that the first electrode 21 and the second electrode 22 face each other with a gap. In addition, the 1st electrode 21 and the 2nd electrode 22 may be arrange | positioned so that it may oppose through an elastic layer.

  The load sensor 20 configured in this manner measures the capacitance value between the first electrode 21 and the second electrode 22 with a period of 10 [ms], for example. When the user performs an operation of pushing the switch 10 with the finger F, the finisher 2 is recessed. When the finisher 2 is recessed, the distance between the first electrode 21 and the second electrode 22 is reduced. Then, the capacitance value between the first electrode 21 and the second electrode 22 changes. From the change in capacitance value between the first electrode 21 and the second electrode 22, the magnitude of the load (load detection strength) can be known.

[Functional configuration of ON / OFF detection device]
FIG. 5 is a functional configuration diagram illustrating a functional configuration of the ON / OFF detection device 101 according to the first embodiment. Hereinafter, the functional configuration of the ON / OFF detection apparatus 101 according to the first embodiment will be described with reference to FIG.

  The ON / OFF detection device 101 includes a switch 10, a touch position sensor 11, a load sensor 20, a control unit 30, and an ON / OFF detection unit 40.

  The switch 10 includes a first switch 10a to a tenth switch 10j.

  The touch position sensor 11 includes a first touch position sensor 11a to a tenth touch position sensor 11j. Each touch position sensor 11 is arranged corresponding to each switch 10. The capacitance value detected by each touch position sensor 11 is transmitted to the control unit 30.

  The load sensor 20 includes a first load sensor 20a and a second load sensor 20b. The capacitance values detected by the first load sensor 20 a and the second load sensor 20 b are transmitted to the control unit 30.

  The control unit 30 includes a storage unit 31, a touch position calculation unit 32, a threshold setting unit 33, a comparison unit 34, and an ON / OFF determination unit 35, and executes an ON / OF determination process described later. Note that the control unit 30 controls the entire ON / OFF detection device 101.

  The storage unit 31 uses a threshold value used by the threshold setting unit 33, a program for ON / OFF determination processing described later, a capacitance value measured by the touch position sensor 11, a capacitance value measured by the load sensor 20, and the like. Remember.

  The touch position calculation unit 32 calculates, based on the change in the capacitance value measured by the touch position sensor 11, whether or not the switch 10 is in a touch state in which the user's finger F touches. That is, the touch position calculation unit 32 calculates the touch position from the change in the capacitance value measured by the touch position sensor 11.

  The threshold setting unit 33 sets a first threshold A, a second threshold B, a third threshold C, and a fourth threshold D as thresholds. The first threshold A is a threshold set when the touch position sensor 11 is in an OFF state.

  The second threshold B is a threshold larger than the first threshold A, and is a threshold set when the touch position sensor 11 is in an ON state. The second threshold B is set lower as the distance from the load sensor 20 to the touch position is shorter. In other words, the second threshold value B is set higher as the distance from the load sensor 20 to the touch position is longer.

  For example, the second threshold value B when the touch position calculation unit 32 calculates the first switch 10a as the touch position is greater than the second threshold value B when the touch position calculation unit 32 calculates the fourth switch 10d as the touch position. Set low. That is, the second threshold value B is set based on the touch position calculated by the touch position calculation unit 32.

  The third threshold value C and the fourth threshold value D are set based on the previous detection value of the load sensor 20. The third threshold C is set lower than the previous detection value of the load sensor 20 when the previous determination result of the ON / OFF determination unit 35 is ON. The fourth threshold value D is set higher than the previous detection value of the load sensor 20 when the previous determination result of the ON / OFF determination unit 35 is OFF.

  Here, the relationship between the repulsive force of the interior material and the load will be described. FIG. 6 is a graph for explaining the relationship between the repulsive force and the load of the interior material.

  As shown in FIG. 6, the repulsive force of the interior material tends to increase as the load input to the interior material increases.

  Therefore, the threshold value setting unit 33 sets the third threshold value C and the fourth threshold value D so that the difference from the previous detection value of the load sensor 20 increases as the load input to the switch 10 increases. That is, the threshold value setting unit 33 increases the third threshold value C and the fourth threshold value D so that the absolute value of the difference between the previous detected value of the load sensor 20 and the threshold value increases as the load input to the switch 10 increases. Set.

  The comparison unit 34 compares the third threshold value C or the fourth threshold value D set by the threshold value setting unit 33 with the current detection value of the load sensor 20.

  The ON / OFF determination unit 35 determines whether the switch 10 is in an ON state or an OFF state.

  The ON / OFF detector 40 has a first ON / OFF detector 40a to a tenth ON / OFF detector 40j corresponding to the first switch 10a to the tenth switch 10j. Each ON / OFF detection unit 40 detects ON / OFF of each switch 10 based on the processing result of the ON / OFF determination processing by the control unit 30.

[ON / OFF judgment processing]
FIG. 7 is a flowchart illustrating ON / OFF determination processing according to the first embodiment. Hereinafter, the ON / OFF determination process of the first embodiment will be described with reference to FIG.

  When the ON / OFF determination process is started, initialization is performed, and the threshold value setting unit 33 sets the threshold value of the load sensor 20 to the first threshold value A (step S101).

  Next, the touch position calculation unit 32 determines whether or not the touch position sensor 11 is ON (step S102). If it is determined that the touch position sensor 11 is OFF (NO in step S102), the process returns to step S102. On the other hand, when it is determined that the touch position sensor 11 is ON (YES in step S102), the touch position calculation unit 32 calculates a touch position (step S103).

  Next, the threshold setting unit 33 sets the threshold of the load sensor 20 to the second threshold B corresponding to the touch position (step S104).

  Next, the control unit 30 executes a continuous hitting process (step S105). The continuous hitting process will be described later.

  Next, the touch position calculation unit 32 determines whether or not the touch position sensor 11 is OFF (step S106). If it is determined that the touch position sensor 11 is ON (NO in step S106), the process returns to step S105. On the other hand, when it is determined that the touch position sensor 11 is OFF (YES in step S106), the process proceeds to step S107.

  Next, the threshold value setting unit 33 sets the threshold value of the load sensor 20 to the first threshold value A (step S107), and ends the ON / OFF determination process.

[Consecutive strike processing]
FIG. 8 is a flowchart illustrating the continuous hitting process according to the first embodiment. Hereinafter, the continuous hitting process according to the first embodiment will be described with reference to FIG.

  When the continuous hitting process is started, the comparison unit 34 determines whether or not the detection value of the load sensor 20 is equal to or greater than the second threshold value B (step S201). When it is determined that the detection value of the load sensor 20 is equal to or greater than the second threshold B (YES in step S201), the process proceeds to step S202. On the other hand, when it is determined that the detection value of the load sensor 20 is less than the second threshold B (NO in step S201), the process returns to step S201. Until the detection value of the load sensor 20 is greater than or equal to the second threshold B, the ON / OFF determination unit 35 determines that the switch 10 is in the OFF state.

  Next, the ON / OFF determination unit 35 determines that the switch 10 is in the ON state (step S202). Next, the threshold setting unit 33 sets the third threshold C based on the previous detection value of the load sensor 20 (step S203).

  Next, the comparison unit 34 determines whether or not the third threshold C is less than the current detection value of the load sensor 20 (step S204). When it is determined that the third threshold C is less than the current detection value of the load sensor 20 (YES in step S204), the process returns to step S203. On the other hand, if it is determined that the third threshold C is equal to or greater than the current detection value of the load sensor 20 (NO in step S204), the process proceeds to step S205.

  Next, the ON / OFF determination unit 35 determines that the switch 10 is in the OFF state (step S205). Next, the threshold setting unit 33 sets the fourth threshold D based on the previous detection value of the load sensor 20 (step S206).

  Next, the comparison unit 34 determines whether or not the fourth threshold value D is equal to or greater than the current detection value of the load sensor 20 (step S207). When it is determined that the fourth threshold value D is less than the current detection value of the load sensor 20 (NO in step S207), the process returns to step S201. On the other hand, when it is determined that the fourth threshold value D is equal to or greater than the current detection value of the load sensor 20 (YES in step S207), the process proceeds to step S208.

  Next, the comparison unit 34 determines whether or not the detection value of the load sensor 20 is greater than or equal to the second threshold value B (step S208). If it is determined that the detection value of the load sensor 20 is equal to or greater than the second threshold B (YES in step S208), the process returns to step S206. On the other hand, when it is determined that the detection value of the load sensor 20 is less than the second threshold B (NO in step S208), the process returns to the main flow.

[Flow of ON / OFF judgment processing]
FIG. 9 is a timing chart illustrating the flow of ON / OFF determination processing according to the first embodiment. Hereinafter, the flow of the ON / OFF determination process according to the first embodiment will be described with reference to FIG. In addition, in FIG. 9, the load detection intensity | strength detected by the load sensor 20 with the period of 10 [ms] is shown.

  At time T0, the user is not touching the switch 10. In this state, the touch position sensor 11 is OFF, and the threshold value of the load sensor 20 is set to the first threshold value A.

  At time T2, the user touches the switch 10. In this state, the touch position sensor 11 is ON, and the threshold value of the load sensor 20 is set to the second threshold value B.

  At time T4, the user has started to push in the switch 10, and the ON operation has started. In this state, the load sensor 20 measures a measurement value (load detection intensity) lower than the second threshold B.

  At time T5, the user is in the middle of pressing the switch 10 and is performing an ON operation. In this state, the load sensor 20 measures the measurement value P1 higher than the second threshold B, and the switch 10 changes from the OFF state to the ON state. At time T5, the third threshold C is set to a third threshold C1 that is H1 lower than the measured value P1.

  At time T6, the user is in the middle of pressing the switch 10 and is performing an ON operation. In this state, the load sensor 20 measures the measurement value P2 higher than the third threshold value C1 of T5, and the switch 10 is turned on. At time T6, the third threshold C is set to a third threshold C2 that is H2 lower than the measured value P2. H2 is larger than H1.

  At time T7, the user is in the middle of pressing the switch 10 and is performing an ON operation. In this state, the load sensor 20 measures the measurement value P3 higher than the third threshold value C2 of T6, and the switch 10 is turned on. At time T7, the third threshold value C is set to a third threshold value C3 that is H3 lower than the measured value P3. H3 is larger than H2.

  At time T8, the user is in the middle of pressing the switch 10 and is performing an ON operation. In this state, the load sensor 20 measures the measurement value P4 higher than the third threshold value C3 of T7, and the switch 10 is turned on. At time T8, the third threshold C is set to a third threshold C4 that is lower by H4 than the measured value P4. H4 is larger than H3.

  At time T9, the user is in the middle of pulling (turning back) the switch 10 and is performing an OFF operation. In this state, the load sensor 20 measures the measurement value P5 lower than the third threshold value C4 of T8, and the switch 10 changes from the ON state to the OFF state. At time T9, the fourth threshold value D is set to a fourth threshold value D5 that is H5 higher than the measured value P5. H5 is smaller than H4.

  At time T10, the user is in the middle of pulling (turning back) the switch 10 and is performing an OFF operation. In this state, the load sensor 20 measures the measurement value P6 lower than the fourth threshold value D5 of T9, and the switch 10 is turned off. At time T10, the fourth threshold value D is set to a fourth threshold value D6 that is H6 lower than the measured value P6. H6 is a value smaller than H5.

  In this way, until T22, the threshold value set for the previous detection value of the load sensor 20 is compared with the current detection value of the load sensor 20, and the ON / OFF state of the switch 10 is determined. Further, when the switch 10 is in the ON state, the threshold value is set lower than the detection value of the load sensor 20, and when the switch 10 is in the OFF state, the threshold value is set higher than the detection value of the load sensor 20.

  At time T23, the user releases the finger F from the switch 10. In this state, the touch position sensor 11 is OFF, and the threshold value of the load sensor 20 is set to the first threshold value A.

[Operation of ON / OFF detection device and interior parts for vehicle]
Hereinafter, the operation of the ON / OFF detection device 101 and the vehicle interior part (instrument panel 1) according to the first embodiment will be described. An ON / OFF detection device 101 according to the first embodiment is an ON / OFF detection device 101 that detects ON / OFF of an input unit (switch 10) using a load sensor 20. The ON / OFF detection device 101 includes a threshold setting unit 33 that sets a threshold for the previous detection value of the load sensor 20, the threshold set by the threshold setting unit 33, the current detection value of the load sensor 20, and And an ON / OFF determination unit 35 that determines ON / OFF of the input unit (switch 10) based on the comparison result of the comparison unit 34 (FIG. 5).

  Thereby, the threshold value can be updated to a value corresponding to the previous detection value. Therefore, ON / OFF of the input unit (switch 10) can be determined more finely than when the threshold value is made constant. As a result, it is possible to detect ON / OFF of the input unit (switch 10) with high accuracy even when continuous ON / OFF is input to the input unit (switch 10). . That is, it is possible to detect ON / OFF of the input unit (switch 10) even if there is a difference in the pressing force and the pressing method during continuous hitting by the operator.

  By the way, input operation with respect to an input part (switch 10) is performed by pressing an input part (switch 10) with a finger F of a user. Further, a repulsive force is generated in the input section (switch 10) with respect to the input load. For this reason, the detection value of the load sensor 20 becomes an unstable value. In particular, when a haptic that gives a tactile sensation due to vibration is performed in accordance with an ON operation or an OFF operation, the value becomes even more unstable.

  Therefore, although the input unit (switch 10) is turned ON, the input unit (switch 10) is detected to be OFF, or the input unit (switch 10) is turned OFF. In spite of this, ON of the input unit (switch 10) may be detected.

  In the ON / OFF detection device 101 according to the first embodiment, when the previous determination result of the ON / OFF determination unit 35 is ON of the input unit (switch 10), the threshold setting unit 33 sets the threshold to the previous detection of the load sensor 20. If the previous determination result of the ON / OFF determination unit 35 is OFF of the input unit (switch 10), the threshold setting unit 33 sets the threshold higher than the previous detection value of the load sensor 20 ( FIG. 9).

  Thereby, the threshold value which considered the detection value of the load sensor 20 which becomes unstable can be set. That is, the margin can be given to the threshold value in consideration of the detection value of the load sensor 20 that becomes unstable. Therefore, even if the detection value of the load sensor 20 is an unstable value, it is possible to prevent unintended ON / OFF detection of the input unit (switch 10).

  By the way, the repulsive force from an input part (switch 10) becomes large, so that the load input into an input part (switch 10) is large. Further, the greater the load input to the input unit (switch 10), the more force the operator enters on the finger F and the finger F may shake. Therefore, as the load input to the input unit (switch 10) is larger, the detection value detected by the load sensor 20 becomes an unstable value, and there is a problem that unintended ON / OFF is detected.

  In the ON / OFF detection device 101 of the first embodiment, the threshold value setting unit 33 is configured so that the difference from the previous detection value of the load sensor 20 increases as the load input to the input unit (switch 10) increases. A threshold value is set (FIG. 9).

  Thereby, the margin which a threshold has can be enlarged, so that the load inputted into an input part (switch 10) is large. Therefore, unintended ON / OFF detection can be prevented regardless of the magnitude of the load input to the input unit (switch 10).

  In the ON / OFF detection device 101 according to the first embodiment, the threshold setting unit 33 determines a threshold based on the touch position detected by the touch position sensor 11 (FIG. 9).

  Thereby, a threshold value can be individually set according to the touch position. Therefore, it is possible to determine ON / OFF of the input unit (switch 10) regardless of the distance from the position of the load sensor 20 to the touch position. That is, even if the load detection intensity of the load sensor 20 changes depending on the touch position, it is possible to detect ON / OFF of the input unit (switch 10). As a result, ON / OFF of the input unit (switch 10) can be detected with a small load sensor 20.

  In the ON / OFF detection device 101 according to the first embodiment, the load sensor 20 is a capacitive load sensor 20 (FIG. 4).

  In particular, in the case of an input unit (switch 10) that employs a capacitive load sensor 20, the user intends to perform an ON / OFF operation and does not release the finger F from the input unit (switch 10). In some cases, the input unit (switch 10) continuously hits ON / OFF. Even in such a case, ON / OFF of the input unit (switch 10) can be accurately detected.

  In the vehicle interior part (instrument panel 1) of the first embodiment, the ON / OFF detection device 101 is applied to an input unit provided in an interior material (finisher 2) installed in the vehicle.

  In a vehicle, for example, an input operation may be performed to adjust the temperature and air volume of an air conditioner. Adjustment of the temperature and air volume of the air conditioner may require multiple input operations. In such a case, an input operation is performed in addition to the driving operation of the vehicle. Therefore, the case where the user strikes the input unit (switch 10) repeatedly in an attempt to perform an input operation a plurality of times in a short time increases. Even in such a case, ON / OFF of the input unit (switch 10) can be accurately detected.

  The ON / OFF detection device and the vehicle interior part of the present invention have been described based on the first embodiment. However, the specific configuration and operation are not limited to this embodiment, and design changes and additions are permitted without departing from the gist of the invention according to each claim.

  In the first embodiment, when the switch 10 is ON, the threshold setting unit 33 sets the threshold lower than the detection value of the load sensor 20, and when the switch 10 is OFF, the threshold setting unit 33 sets the threshold to the value of the load sensor 20. An example of setting higher than the detection value is shown. However, as shown in FIG. 10, whether the switch 10 is ON or OFF, the threshold setting unit 33 has the same value as the load detection intensity based on the detection value of the load sensor 20. A threshold may be set.

  In the first embodiment, the example in which the threshold is set so that the difference from the previous detection value of the load sensor 20 increases as the load input to the switch 10 increases. However, the threshold value may be set constant regardless of the load input to the switch.

  In Example 1, the example which does not implement the haptic which gives a vibration with respect to input operation was shown. However, you may implement the haptic which gives a vibration with respect to input operation.

  In the first embodiment, an example in which the load sensor 20 is a capacitance type is shown. However, as the load sensor, other load sensors such as a resistance wire type, a diffusion type, and a film formation type can be used.

In the first embodiment, an example in which the switch 10 is a switch for operating the air conditioner is shown.
However, the switch may be a switch for operating a car audio or a switch for other operations.

  In Example 1, the example which provides the two load sensors 20 was shown. However, the load sensor 20 may be one, or may be three or more.

  In the first embodiment, an example in which ten switches 10 are provided has been described. However, the number of switches is not limited to this mode.

  In Example 1, the example which applies this invention to the finisher 2 provided in the instrument panel 1 was shown. However, the present invention can be applied to an input device provided on a console or an armrest. The present invention can also be applied to input devices provided in furniture, electrical appliances, and the like.

1 Instrument panel (an example of vehicle interior parts)
2 Finisher (an example of interior materials)
10 switch (an example of the input unit)
20 Load sensor 33 Threshold setting unit 34 Comparison unit 35 ON / OFF determination unit 101 ON / OFF detection device

Claims (5)

An ON / OFF detection device that detects ON / OFF of an input unit using a load sensor,
A threshold value setting unit for setting a threshold value for the previous detection value of the load sensor;
A comparison unit that compares the threshold set by the threshold setting unit with the current detection value of the load sensor;
An ON / OFF determination unit that determines ON / OFF of the input unit based on a comparison result of the comparison unit ;
When the previous determination result of the ON / OFF determination unit is ON of the input unit, the threshold setting unit sets the threshold lower than the previous detection value of the load sensor,
When the previous determination result of the ON / OFF determination unit is OFF of the input unit, the threshold setting unit sets the threshold higher than the previous detection value of the load sensor. Detection device. The threshold setting unit, as the load inputted to the input unit is high, such that the difference between the previous detection value of the load sensor is increased, and sets the threshold value, to claim 1 The ON / OFF detection device described. The threshold setting unit, based on the detected touch position of the touch position sensor, and determines the threshold value, ON / OFF detection device according to claim 1 or 2. The load sensor is characterized by a load sensor of an electrostatic capacity type, ON / OFF detecting apparatus according to any one of claims 1-3. The on / off detection device according to any one of claims 1 to 4 is applied to an input part provided in an interior material installed in a vehicle.