JP2012076566A - Door catching detection device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a door catching detection device that detects abnormal conditions of a door stop rubber.SOLUTION: A pressure unit 11 transmits a pressure signal according to an output signal of a pressure sensor which is formed in the door stop rubber 5a, and detects the internal pressure of a cylindrical part. A controller 14 determines whether the abnormal conditions such as cracks and breakages arise in the door stop rubber 5a based on a value of the pressure signal received through a terminal unit 12, and outputs, when the abnormal conditions arise, the door stop rubber detection signal which shows that the door stop rubber 5a fractures.

Description

  The present invention relates to a vehicle door pinching detection device for detecting that a bag or the like has been pinched when a door is closed.

  2. Description of the Related Art Conventionally, some vehicles such as railways are provided with a door pinching detection device that detects that a belonging or the like is pinched when the vehicle door is closed. This door pinching detection device is, for example, whether or not it is in the door pinching state by detecting the pressing state of the door rubber when the door rubber is provided at the tip of the vehicle door and the vehicle door is closed. To detect. In other words, this door pinching detection device detects the change in the pressing state of the door rubber because the door rubber is pressed in a state different from normal when a belonging or the like is pinched when the vehicle door is closed. By detecting this, the door-slipping state is detected. For example, the door pinching detection device disclosed in Patent Document 1 detects a deformation of the door rubber, that is, a pressed state, by forming a space in the door rubber and detecting a pressure change in the space.

JP 2008-8121 A

  However, such door-end rubber has cracks, holes and the like due to secular change due to continuous use. Then, since air leaks from the space in the door rubber, the desired pressure change may not occur, and the deformation of the door rubber, that is, the pressing state may not be detected.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a door pinching detection device capable of detecting an abnormality in door rubber.

  In order to achieve the above object, the invention according to claim 1 is provided on a door that opens and closes a vehicle entrance and exit, and has a door-end rubber having an elastically deformable hollow portion, and a pressure corresponding to an internal pressure of the hollow portion. A pressure sensor for outputting a signal; an open / close pressure detecting means for detecting a minimum value of the pressure signal each time the door is closed from an open state; and a minimum of the pressure signal each time the door is closed from an open state. Based on a determination value calculation means for calculating a door pinching determination value based on the value, and comparing a pressure signal output from the pressure sensor with the door pinching determination value every time the door is closed from an open state. In a door pinch detection device comprising door pinch detection means for detecting the presence or absence of door pinch, when closed by the opening / closing pressure detection means, a pressure signal output from the pressure sensor at a predetermined timing is captured, To determine the breaking of the door head rubber based on the pressure signal, with a break detecting means for outputting an abnormality signal. Accordingly, when the door rubber has an abnormality such as a crack or a break, the pressure signal has a value different from the normal value. By detecting this pressure signal, it is possible to easily detect abnormality of the door-end rubber. When the door rubber has broken or the like, it is notified by an abnormal signal, so that the abnormality of the door rubber can be easily confirmed.

  According to a second aspect of the present invention, the predetermined timing is a plurality of timings within a predetermined period, and the breakage detecting means outputs a plurality of pressure signals respectively taken from the pressure sensor at the plurality of timings. On the basis of this, the breakage of the door rubber is determined when the pressure signal has decreased by a predetermined level. Thereby, when a small crack and fracture | rupture have arisen in the door rubber | gum, the abnormality of the door rubber | gum can be detected easily.

  According to a third aspect of the present invention, the breakage detecting means determines the breakage of the door-end rubber when the level of the pressure signal does not fluctuate regardless of whether the door is opened or closed. Thereby, when the big crack and fracture | rupture have arisen in the door-end rubber, the abnormality of the door-end rubber can be detected easily.

  According to a fourth aspect of the present invention, there is provided a closing pressure detecting means that uses a pressure signal output from the pressure sensor when the door is closed as a closing pressure, and the breakage detecting means includes the closing pressure and the minimum value. To determine the breakage of the door rubber. Thereby, the closing pressure at the time of door closing can be set, and abnormality of door-end rubber | gum can be detected.

  According to a fifth aspect of the present invention, a pressure change portion that is communicated with the inside of the hollow portion and is formed so as to be elastically deformable is provided, and at least one of the hollow portion and the pressure change portion is forced on the vehicle. A pressure setting member for elastically deforming is provided, and the breakage detecting means determines breakage of the door rubber based on a pressure signal output from the pressure sensor with respect to the forced elastic deformation. Thereby, the internal pressure at the time of closing the door can be set, and abnormality of the door end rubber can be detected.

  The invention according to claim 6 is the connection pipe in which the pressure changing portion connects the hollow portion and the pressure sensor, and at least a part thereof is formed to be elastically deformable. Thereby, the internal pressure of the hollow part formed in the door-end rubber can be easily changed.

  As described above, according to the present invention, it is possible to provide a door pinching detection device capable of detecting an abnormality in door rubber.

The partial side view of a vehicle. The cross-sectional view of the door rubber. The longitudinal cross-sectional view which shows the principal part of the door for vehicles. The block diagram which shows the electrical structure of a door pinching detection apparatus. The timing diagram which shows the relationship between the opening and closing of a door, and a pressure signal. The wave form diagram which shows the relationship between opening and closing of a door, and a pressure signal. The wave form diagram which shows the relationship between opening and closing of a door, and a pressure signal. The flowchart which shows operation | movement of the vehicle body side microcomputer. The flowchart which shows operation | movement of the vehicle body side microcomputer. The flowchart which shows operation | movement of a door side microcomputer. The partial side view of another vehicle. The longitudinal cross-sectional view which shows the principal part of another vehicle door. The longitudinal cross-sectional view which shows the principal part of another vehicle door. The perspective view which shows schematic structure of another door pinching detection apparatus. Explanatory drawing which shows schematic structure of another door pinching detection apparatus. (A)-(c) is explanatory drawing which shows schematic structure of another door pinching detection apparatus.

Hereinafter, an embodiment embodying the present invention will be described with reference to FIGS.
As shown in FIG. 1, two doors 2a and 2b are attached to a vehicle body 1 of a train corresponding to a vehicle so as to be slidable in the front-rear direction of the vehicle body 1 (left-right direction in FIG. 1). Both doors 2a and 2b are mechanically connected to an actuator (not shown) such as a door motor, and slide in the front-rear direction based on the driving of the actuator to open and close the entrance 3 of the vehicle body 1.

  Door end rubbers 5a and 5b are attached to the front ends of the doors 2a and 2b over substantially the entire height of the doors 2a and 2b. The door end rubbers 5a and 5b of the doors 2a and 2b face each other in close contact with each other or with a predetermined gap depending on the mounting state of the doors 2a and 2b when the door is closed. When the door rubbers 5a and 5b are in close contact with each other, more specifically, when the leading ends interfere with each other and are elastically deformed, the mating portion between the doors 2a and 2b is closed without a gap.

  A pressure unit 11 is attached to the door 2a. The pressure unit 11 is arrange | positioned at the upper part of the door 2a, for example. The pressure unit 11 has a pressure sensor, and detects the internal pressure of the elastically deformable hollow portion formed in the door rubber 5a with this pressure sensor. Then, the pressure unit 11 transmits a pressure signal corresponding to the detected pressure to the terminal unit 12 attached to the vehicle body 1. The pressure unit 11 and the terminal unit 12 are configured to transmit and receive signals by a predetermined method (for example, an electromagnetic induction method). Accordingly, in FIG. 1, the pressure unit 11 and the terminal unit 12 are illustrated as being arranged in the vertical direction of the vehicle body 1, but are arranged and fixed at positions (for example, the same height) according to the communication method. .

  The terminal unit 12 is connected to the controller 14 via a cable 13. The cable 13 is configured by connecting two cables 13a and 13b with connectors 13c and 13d. The terminal unit 12 transmits a measurement start signal to the pressure unit 11 in response to a control signal from the controller 14, and receives a pressure signal transmitted from the pressure unit 11 in response to the signal. Then, the terminal unit 12 outputs the received signal to the controller 14. Based on the pressure signal output from the terminal unit 12, the controller 14 detects the state of the door clamp and the door end rubber 5a.

  Since the door 2b and the door rubber 5b are configured in the same manner as the door 2a and the door rubber 5a, the pressure unit 11 and the like are omitted in FIG. 1, and the description of the door 2b and the door rubber 5b is omitted.

The configuration of the door rubber 5a will be described.
As shown in FIG. 2, a recess 4 is formed at the tip of the door 2a. These recesses 4 are open at the top, and a mounting portion 21 for a door rubber 5a is mounted in the recess 4. The mounting portion 21 is fixed in the concave portion 4 by being press-fitted into the concave portion 4 from above, and a reference pressure chamber 22 is formed in the central portion of the mounting portion 21. As shown in FIG. 3, the reference pressure chamber 22 has a vertically long space whose upper and lower surfaces are open. Two plugs 23 are press-fitted into the reference pressure chamber 22 at the lower end. The two plugs 23 block the lower end portion of the reference pressure chamber 22 in an airtight state.

  As shown in FIG. 2, a narrow portion 24 is integrally formed with the attachment portion 21, and a door stop portion 25 having a substantially semi-cylindrical cross section located integrally with the narrow portion 24 is located outside the concave portion 4. Is formed. This door stop portion 25 has a vertically long cylindrical shape whose upper and lower surfaces are open. The door stop portion 25 extends in the vertical direction of the door 2a, and has a plate-like base portion 25a formed so as to cover the concave portion 4 of the door 2a, and a semicircular shape connected to the upper and lower ends of the base portion 25a in the drawing. It is comprised from the contact part 25b. A regulating wall portion 26 is integrally formed on the inner peripheral surface (base portion 25 a) of the door stop portion 25. The restricting wall portion 26 is located at a portion deviated from the center in the front-rear direction of the door stop portion 25 toward the vehicle outer side, and the thickness dimension of the restricting wall portion 26 is set to be thicker than the thickness dimension of the door stop portion 25. ing.

  A first connecting plate 27 and a second connecting plate 28 are integrally formed on the inner peripheral surface of the door stop 25. The base end portion of the first connecting plate 27 is connected integrally with the base portion 25a, and the base end portion of the second connecting plate 28 is connected integrally with the contact portion 25b. A longitudinally long cylindrical portion 29 corresponding to a hollow portion is integrally formed at the distal ends of the first connecting plate 27 and the second connecting plate 28, and the first connecting plate 27 and the second connecting plate 28 are The cylindrical portion 29 is held at a portion that is biased toward the vehicle interior side from the center of the door stop portion 25 in the front-rear direction. This cylindrical portion 29 forms a space-like detection pressure chamber 30 whose upper and lower surfaces are open. In the detection pressure chamber 30, as shown in FIG. The stopper 31 is press-fitted, and the two stoppers 31 block the lower surface of the detection pressure chamber 30 in an airtight state.

  The door stop portion 25 reduces the impact when the door 2 collides with the other door 2 when the door 2 is closed, or reduces the impact when a foreign object such as a bag is caught between the door stop portions 25. When a foreign object is caught between the door stop portions 25, the following behavior is exhibited. In FIG. 2, the upper side of the door-end rubber 5a in the drawing is the outside of the vehicle, and the lower side of the door-end rubber 5a in the drawing is the inside of the vehicle.

  When a foreign object is sandwiched between the door stop portions 25, the contact portion 25b swells toward at least one of the outside of the vehicle and the inside of the vehicle, and the base end portion of the first connecting plate 27 and the base end portion of the second connecting plate 28 The positional relationship of changes relatively. Specifically, the distance between the base end portion of the first connecting plate 27 and the base end portion of the second connecting plate 28 changes. As a result, the cylindrical portion 29 to which the distal end portion of the first coupling plate 27 and the distal end portion of the second coupling plate 28 are connected is crushed, so that the volume of the detection pressure chamber 30 changes, that is, the detection pressure chamber. The internal pressure of 30 changes. At this time, since the force that deforms the contact portion 25b does not act on the mounting portion 21, the mounting portion 21 is held in a fixed shape, and thus the internal pressure of the reference pressure chamber 22 does not change.

  When the contact portion 25b contacts the restriction wall portion 26, further deformation of the contact portion 25b is prevented. For this reason, the relative movement between the base end portion of the first connecting plate 27 and the base end portion of the second connecting plate 28 is restricted, that is, the deformation amount (crushing amount) of the cylindrical portion 29 is restricted. . Therefore, the restriction wall portion 26 sets an upper limit of the internal pressure of the detection pressure chamber 30. Further, the restriction wall portion 26 prevents the cylindrical portion 29 from being damaged.

  As shown in FIG. 3, a core rubber 32 is fixed in the door stop 25 at the upper and lower ends. The core rubber 32 is formed so that the tip thereof protrudes beyond the tip of the regulation wall portion 26. Accordingly, as shown in FIG. 1, when the doors 2a and 2b are closed, the core rubber 32 is attached to the tips of the doors 2a and 2b. The contact between the doors 2a and 2b is restricted, and the mating portion between the doors 2a and 2b is closed without any gap.

  The core rubber 32 is in a state where the contact portions 25b are slightly elastically deformed by interference with each other. As described above, the cylindrical portion 29 is crushed by the deformation of the contact portion 25b, and the internal pressure of the detection pressure chamber 30 is changed. Therefore, the core rubber 32 makes the internal pressure of the detection pressure chamber 30 when the door is closed slightly higher than the internal pressure of the detection pressure chamber 30 when the door is not closed. Even when the door is closed, since the force that deforms the contact portion 25b does not act on the mounting portion 21, the mounting portion 21 is held in a fixed shape, and the internal pressure of the reference pressure chamber 22 does not change.

  In the reference pressure chamber 22 of the door rubber 5a, the first end of the reference tube 41 is press-fitted at the upper end corresponding to the attachment position of the pressure unit 11, and the second end of the reference tube 41 is pressed. Is connected to the first end of the reference pipe 42. The second end of the reference pipe 42 is connected to the first end of the reference tube 43, and the second end of the reference tube 43 is connected to the pressure unit 11. The pressure unit 11 is, for example, screwed to the upper end surface of the door 2. The reference tubes 41 and 43 are made of silicon rubber. The reference pipe 42 is made of a metal material, and the reference pipe 42 has a first pressure release hole (not shown). These reference tubes 43 together with the reference pipe 42 and the reference tube 41 constitute a first pressure passage 44. That is, the reference pressure chamber 22 of the door rubber 5 a is connected to the pressure unit 11 through the first pressure passage 44.

  A first end of the detection tube 45 is press-fitted into the detection pressure chamber 30 of the door rubber 5a and is located at the upper end, and the second end of the detection tube 45 is connected to the first end of the detection pipe 46. Has been. The second end of the detection pipe 46 is connected to the first end of the detection tube 47, and the second end of the detection tube 47 is connected to the pressure unit 11. These detection tubes 45 and 47 are made of silicon rubber. The detection pipe 46 is made of a metal, and the detection pipe 46 is formed with a second press-off hole (not shown). The detection tube 47 forms a second pressure passage 48 together with the detection pipe 46 and the detection tube 45. That is, the pressure chamber 30 for detection of the door rubber 5 a is connected to the pressure unit 11 through the second pressure passage 48.

  A fixing member 49 is attached to the door 2. A reference pipe 42 and a detection pipe 46 are inserted into the fixing member 49, and the pipes 42 and 46 are a synthetic resin pipe base constituting the fixing member 49, an attachment fitting, and an adhesive fixed within the attachment fitting. It is supported so as not to move by the sealing material having the property. And the 1st and 2nd exfoliation hole (illustration abbreviation) formed in each pipe 42 and 46 is plugged up in the airtight state by the adhesive seal material, respectively.

Next, the electrical configuration of the pressure unit 11, the terminal unit 12, and the controller 14 will be described with reference to FIG.
The pressure unit 11 includes a resonance circuit 52 formed by connecting a secondary coil L2 and a capacitor C1 in parallel, a full-wave rectifier circuit 53, a constant voltage circuit 54, a door-side microcomputer 55 (referred to as a door-side microcomputer 55), and a clock extraction circuit. 56, an AND circuit 57, a demodulation circuit 58, a pressure sensor 59, an NPN transistor Q1, and a resistor R1. The resonance circuit 52 charges the capacitor C1 with AC power induced by the secondary coil L2. The full wave rectification circuit 53 converts the discharge power of the capacitor C1 into a direct current based on full wave rectification. The constant voltage circuit 54 converts the DC voltage from the full wave rectifier circuit 53 to a constant voltage. The door-side microcomputer 55 is driven based on the application of DC power from the constant voltage circuit 54. That is, the pressure unit 11 and the terminal unit 12 can communicate within the range in which both the coils L1 and L2 can be electromagnetically induced as the door moves, and cannot communicate when both the coils L1 and L2 cannot generate a DC voltage. Become.

  The clock extraction circuit 56 generates a clock signal synchronized with the frequency of the AC power charged in the capacitor C 1 and outputs the clock signal to the AND circuit 57. Further, the demodulating circuit 58 generates demodulated data based on the output signal from the secondary coil L2.

  The door-side microcomputer 55 is mainly composed of a CPU, a RAM functioning as a work area, and a ROM in which a control program is recorded in advance. The door-side microcomputer 55 determines the content of the output signal of the secondary coil L2 based on the demodulated data from the demodulation circuit 58. Further, the door side microcomputer 55 generates a signal according to the output signal of the connected pressure sensor 59 and outputs it to the AND circuit 57.

  The AND circuit 57 generates a drive signal based on arithmetic processing of the clock signal from the clock extraction circuit 56 and the output signal from the door-side microcomputer 55. The transistor Q1 is turned on / off in response to the drive signal supplied from the AND circuit 57.

  The terminal unit 12 includes an oscillation circuit 60, a frequency dividing circuit 61, an amplifier 62, a capacitor C2, and a resonance circuit 63 formed by serially connecting a primary coil L1, resistors R2, R3, NPN transistors Q2, buffers 64, and a demodulation circuit 65. have. The oscillation circuit 60 outputs a power signal having a set frequency to the frequency dividing circuit 61. The frequency dividing circuit 61 divides the power signal from the oscillation circuit 60 and outputs it to the amplifier 62.

  The amplifier 62 amplifies the power signal and outputs it to the resonance circuit 63. The resonant circuit 63 oscillates at a frequency corresponding to the power signal from the amplifier 62 and generates a magnetic field in the primary coil L1. The buffer 64 amplifies the signal supplied from the controller 14 and outputs it as a drive signal to the transistor Q2. The transistor Q2 is turned on / off in response to the drive signal. When the transistor Q2 is on, the charge of the capacitor C2 is discharged through the resistor R3, and the oscillation level of the primary coil L1 is lowered.

The controller 14 is electrically connected to an in-vehicle power supply device 80, and driving power is supplied from the power supply device 80.
The controller 14 includes a filter circuit 70, a vehicle body side microcomputer 71 (referred to as a vehicle body side microcomputer 71), an input circuit 72, and an output circuit 73. The filter circuit 70 removes noise components from the demodulated data based on the demodulated data supplied from the demodulating circuit 65 of the terminal unit 12, and synchronizes the demodulated data from which the noise components have been removed with the oscillation frequency output from the oscillation circuit 60. And output to the vehicle-side microcomputer 71. The vehicle body side microcomputer 71 determines the presence or absence of door pinching based on the demodulated data from the filter circuit 70.

  The vehicle body side microcomputer 71 is mainly composed of a CPU, a RAM functioning as a work area, and a ROM in which a control program is recorded in advance. The microcomputer 71 functions as an opening / closing pressure detecting means, a judgment value calculating means, a door pinching detecting means, a closing / opening pressure detecting means, a closing pressure detecting means, and a breakage detecting means by executing a control program.

  The microcomputer 71 receives a door opening signal and a door closing signal based on the opening and closing operation of the crew by the crew member via the input circuit 72. The microcomputer 71 outputs a door pinching detection signal and a door end rubber detection signal via the output circuit 73. The vehicle body 1 includes a control device and a display lamp (not shown), and the control device turns on or off the display lamp in response to a signal output from the controller 14. For example, the control device turns on the abnormality display lamp in response to a signal indicating that there is a door pin (eg, H level) based on the door pin detection signal, and changes the signal indicating that there is no door pin (eg, L level). In response, the error display lamp is turned off. Further, the control device turns on the abnormality notification lamp in response to a signal indicating that there is an abnormality (for example, H level) based on the door rubber detection signal, and responds to a signal indicating that there is no abnormality (for example, L level). Then, the abnormality notification lamp is turned off.

Next, the operation of the above configuration will be described.
When the terminal unit 12 is turned on, the resonance circuit 63 oscillates at a frequency corresponding to the power signal from the frequency dividing circuit 61. When the door 2 is closed, the primary coil L1 and the secondary coil L2 are magnetically coupled to generate an induced electromotive force in the secondary coil L2, and power is applied from the constant voltage circuit 54 to the door-side microcomputer 55.

  When the power supply at the power-on reset level is applied, the door-side microcomputer 55 proceeds to step S31 in FIG. 10 and determines whether the power supply from the constant voltage circuit 54 has reached the rated level. If it determines with "YES" here, it will transfer to step S32 and will determine the presence or absence of a measurement start signal.

  When the vehicle-side microcomputer 71 of the controller 14 is turned on, the process proceeds to step S1 in FIG. 1 and outputs a pulsed measurement start signal to the transistor Q2 via the buffer 64 in FIG. Then, the transistor Q2 is turned on / off according to the measurement start signal, and the oscillation level of the primary coil L1 changes to the H level and the L level according to the measurement start signal. For this reason, the oscillation level of the secondary coil L2 changes to H level and L level according to the measurement start signal, and the secondary coil L2 receives the measurement start signal from the primary coil L1.

  When the oscillation level of the secondary coil L2 changes, the demodulation circuit 58 demodulates the measurement start signal and outputs it to the door side microcomputer 55. Then, the door side microcomputer 55 detects a measurement start signal in step S32 of FIG. 10, and proceeds to step S33. Here, the microcomputer 55 detects an output signal from the pressure sensor 59 and sets a pulsed pressure signal P. This pressure signal P indicates the differential pressure between the internal pressure of the reference pressure chamber 22 and the internal pressure of the detection pressure chamber 30 in FIG. 3, and when the door side microcomputer 55 sets the pressure signal P, the flow goes to step S34 in FIG. Then, the pressure signal P is output to the AND circuit 57 in FIG.

  When the AND circuit 57 is supplied with the pressure signal P, the AND circuit 57 generates a drive signal based on the clock signal from the clock extraction circuit 56 and the pressure signal P, and outputs the drive signal to the transistor Q1. Then, the transistor Q1 is turned on at the timing when the oscillation level of the secondary coil L2 becomes high (the timing when the oscillation level of the primary coil L1 becomes high), and the inductance of the primary coil L1 changes. The change in inductance is output to the filter circuit 70 by the demodulation circuit 65 as demodulated data, and the filter circuit 70 outputs the change to the vehicle-side microcomputer 71 in synchronization with the oscillation frequency of the oscillation circuit 60.

  When the demodulated data is given from the filter circuit 70, the vehicle body side microcomputer 71 determines that the pressure signal P is present at step S2 in FIG. 8 and proceeds to step S3 to set (substitute) the value of the pressure signal P to the closing pressure P0. (P → P0). In step S3, the microcomputer 71 compares the closing pressure P0 with the pressure signal P, and sets the value of the pressure signal P to the closing pressure P0 when the pressure signal P is larger than the closing pressure P0. That is, the microcomputer 71 sets the maximum value of the pressure signal P to the closing pressure P0.

  Next, in step S4, the microcomputer 71 determines whether or not there is a door open signal from the input circuit 72 of FIG. If it is detected that there is no door open signal, the process returns to step S1 in FIG. 8, and steps S1 to S4 are repeated until the door open signal is detected in step S4. Therefore, the door side microcomputer 55 repeats transmission of the pressure signal P, and the vehicle body side microcomputer 71 updates the closing pressure P0 (pressure when the door 2 is closed) (section K1 in FIG. 5). FIG. 5 shows the time change of the pressure signal P transmitted from the door side microcomputer 55 to the vehicle body side microcomputer 71.

  When detecting the door opening signal in step S4 of FIG. 8, the vehicle body side microcomputer 71 proceeds to step S5 and sets the maximum value P1max to the minimum closing opening pressure P1 (P1max → P1). The maximum value P1max is the maximum value of the closing pressure when the door 2 is opened from the closed position. When the vehicle body side microcomputer 71 executes “P1max → P1”, the process proceeds to step S6, and the door side microcomputer 55 Send measurement start signal. Then, the door side microcomputer 55 transmits the pressure signal P in the above-described procedure, and the vehicle body side microcomputer 71 receives the pressure signal P. The maximum value P1max of the minimum closing pressure P1 is recorded in advance in the ROM of the vehicle body side microcomputer 71.

  When receiving the pressure signal P, the vehicle body side microcomputer 71 determines “YES” in step S7 of FIG. 8 and proceeds to step S8 to set the pressure signal P to the closing and opening pressure P1a. Then, the process proceeds to step S9, and the minimum closing / opening pressure P1 is compared with the closing / opening pressure P1a. When “minimum closing / opening pressure P1 ≧ closing / opening pressure P1a” is detected, the process proceeds to step S10, where the closing / opening pressure P1a is set to the minimum closing / opening pressure P1 (P1a → P1).

  When the vehicle body side microcomputer 71 executes “closed opening / closing pressure P1a → minimum closing / opening pressure P1”, the process proceeds to step S11 to determine whether there is a door closing signal from the input circuit 72 of FIG. If it is detected that there is no door closing signal, the process returns to step S6 in FIG. 8, and steps S6 to S11 are repeated. Therefore, the door side microcomputer 55 repeats transmission of the pressure signal P, and the vehicle body side microcomputer 71 updates the minimum closing / opening pressure P1 to the minimum value (section K2 in FIG. 5).

  If the secondary coil L2 is removed from the primary coil L1 while the door 2 is moving from the closed position to the open position, the supply of power to the door side microcomputer 55 is cut off and the door side microcomputer 55 is turned off. In this state, even if the vehicle-side microcomputer 71 transmits a measurement start signal in step S6 in FIG. 8, the pressure signal P is not transmitted from the door-side microcomputer 55. Therefore, the vehicle-side microcomputer 71 determines “NO” in step S7. The process proceeds to step S11, and steps S6, S7, and S11 are repeated until a door closing signal is detected.

When the vehicle body side microcomputer 71 detects the door closing signal in step S <b> 11, the process proceeds to step S <b> 12 in FIG. 9 and transmits a measurement start signal to the door side microcomputer 55.
Immediately after the door closing signal is output, the door 2a exists in the vicinity of the open position, so that the secondary coil L2 is disconnected from the front of the primary coil L1, and the power supply to the door-side microcomputer 55 is cut off. For this reason, even if the measurement start signal is transmitted from the vehicle body side microcomputer 71, the pressure signal P is not transmitted from the door side microcomputer 55. Therefore, the vehicle body side microcomputer 71 determines “NO” in step S13 and returns to step S12. Repeat transmission of measurement start signal.

  When the secondary coil L2 faces the front of the primary coil L1 during the movement of the door 2 being closed from the open position, the door-side microcomputer 55 is activated, receives the measurement start signal, and transmits the pressure signal P. Then, the vehicle body side microcomputer 71 determines “YES” in step S13, proceeds to step S14, and sets the value of the pressure signal P to the minimum opening / closing pressure P2 (P → P2).

  Next, the microcomputer 71 proceeds to step S15 and transmits a measurement start signal to the door-side microcomputer 55. Then, the door side microcomputer 55 transmits the pressure signal P in the above-described procedure. When receiving the pressure signal P, the vehicle body side microcomputer 71 determines "YES" in step S16, proceeds to step S17, and sets the value of the pressure signal P to the opening / closing pressure P2a (P → P2a). Then, the process proceeds to step S18, and the minimum switching pressure P2 is compared with the switching pressure P2a.

<About the control contents when there is no crack or hole in the door rubber>
(A) When there is no door pinching The solid line in FIG. 6 shows the pressure signal P when there is no door pinching. In this case, immediately before the door 2 is closed, the pressure signal P increases (T1 to T2) and becomes a constant value (T2).

  When the vehicle body side microcomputer 71 detects “opening / closing pressure P2a ≦ minimum opening / closing pressure P2” in step S18 of FIG. 9 (for example, before T1 of FIG. 5), it determines that there is no door pinching and proceeds to step S23 of FIG. The state of the door closing signal is determined. The door closing signal is output stopped when the door 2 moves from the open position to the closed position. When the vehicle body side microcomputer 71 detects the door closing signal in step S23, the process returns to step S15. Therefore, the door side microcomputer 55 repeats transmission of the pressure signal P, and the vehicle body side microcomputer 71 updates the minimum opening / closing pressure P2 (section K3 in FIG. 5).

When the vehicle body side microcomputer 71 detects “opening / closing pressure P2a> minimum opening / closing pressure P2” in step S18 in FIG. 9 (for example, T1 to T2 in FIG. 5a), the process proceeds to step S19, and the following equation (1) is calculated. Based on this, the door pinching determination value P3 is calculated.
P3 = (P0−P1) + P2 + threshold value ΔP (1)
When the vehicle side microcomputer 71 calculates the door pinching determination value P3, the process proceeds to step S20, and the opening / closing pressure P2a recorded in the previous step S17 is compared with the door pinching determination value P3 calculated in step S19. Here, when “opening / closing pressure P2a <door clamp determination value P3” is detected, it is determined that there is no door clamp, the process proceeds to step S21, and the output of the door clamp detection signal is turned off (in this case, the door clamp detection signal is Not output). And a series of operation | movement is repeated until the output stop of a door closing signal is detected by step S23, and if the output stop of a door closing signal is detected by step S23, it will transfer to step S24.

  When the process proceeds to step S24, the vehicle body side microcomputer 71 performs door end rubber break determination processing. Based on the value of the pressure signal P, the microcomputer 71 determines whether or not an abnormality such as a crack or breakage has occurred in the door rubber 5a. As described above, the value of the pressure signal P increases immediately before the door 2a is closed, and becomes a constant value. Therefore, the microcomputer 71 determines based on the value of the pressure signal P whether or not the value of the pressure signal P is constant after the value of the pressure signal P increases. The microcomputer 71 keeps a constant value, with the value of the pressure signal P being substantially equal to the reference value stored in the microcomputer 71 in advance (the value of the pressure signal when the doors 2a and 2b shown in FIG. 1 are closed). In this case, it is determined that there is no abnormality in step S25, that is, "YES", the process proceeds to step S28, the output of the door pinching detection signal is turned off, and the process returns to step S1 in FIG.

  The reference value may be a difference between the value of the pressure signal when the door 2a is closed and the value of the pressure signal when the door 2a is normally closed. In this case, the microcomputer 71 uses the value obtained by adding the happy life value to the value of the pressure signal P received from the pressure unit 11 (for example, the minimum opening / closing pressure P2) until the door 2a is closed. Based on whether or not the value of the pressure signal P exceeds or equals the threshold value, it is determined whether or not an abnormality has occurred in the door rubber 5a.

(B) When there is a door clamp The two-dot chain line in FIG. 6 shows the pressure signal P when there is a door clamp. In this case, the pressure signal P is rapidly increased based on the occurrence of the door pinching (T3 to T4), and is held at a constant abnormal value (T4 to T5). When the restart of the door 2 starts, the pressure signal P decreases rapidly (T5 to T6), and becomes a constant normal value when the door 2 is open (T6 to).

  The vehicle-body side microcomputer 71 detects “opening / closing pressure P2a> minimum opening / closing pressure P2” in step S18 of FIG. 9, calculates a door pinching judgment value P3 in step S19, and in step S20 “opening / closing pressure P2a ≧ door pinching judgment value P3. ”Is detected. Then, it is determined that there is a door pinch and the process proceeds from step S20 to S22, and the output of the door pinch detection signal is turned on. Then, a door pinching detection signal is supplied from the output circuit 73 of FIG. 4 to the vehicle control device. Then, the crew member is notified of the door pinching based on the fact that the control device turns on the abnormality display lamp in response to the door pinching detection signal.

  When the crew member detects a door pinching, the crew member operates a restart switch (not shown). When the restart switch is operated, the door 2 is restarted based on driving the actuator, so that it is possible to eliminate the pinching of the door based on removing the bag or the like. When the door 2 is restarted, a door closing signal is continuously output, and the vehicle-side microcomputer 71 returns from step S23 to S15 despite the door 2 being restarted, and the door-side microcomputer 55 receives a measurement start signal. Send.

  When transmitting the measurement start signal, the vehicle body side microcomputer 71 detects the pressure signal P in step S16, sets the pressure signal P to the opening / closing pressure P2a in step S17, and compares the opening / closing pressure P2a with the minimum opening / closing pressure P2 in step S18. To do. Then, based on the comparison result between the opening / closing pressure P2a and the minimum opening / closing pressure P2, the process proceeds to step S19 or S23, and the calculation process of the door pinching determination value P3 or the state of the door closing signal is determined.

<About the control contents when cracks or holes occur in the door rubber>
(C) When there is no door pinching The solid line in FIG. 7 shows the pressure signal P when there is no door pinching. In this case, immediately before the vehicle door 2 is closed, the pressure signal P increases (T1 to T2) and reaches a high value (T2). Thereafter, the pressure signal P decreases (T2 to T3) based on the air in the cylindrical portion 29 leaking through a crack or the like, and becomes a constant normal value (T2a to).

  When the vehicle body side microcomputer 71 detects “opening / closing pressure P2a ≦ minimum opening / closing pressure P2” in step S18 of FIG. 9 (for example, before T1 of FIG. 7), it determines the state of the door closing signal in step S23 of FIG.

  When the vehicle body side microcomputer 71 detects “opening / closing pressure P2a> minimum opening / closing pressure P2” in step S18 (for example, T1 to T2 in FIG. 7), it calculates a door pinching judgment value P3 in step S19 in FIG. Next, “opening / closing pressure P2a <door clamp determination value P3” is detected in step S20, and the output of the door clamp detection signal is turned off in step S21 (in this case, the door clamp detection signal is not output). And a series of operation | movement is repeated until the output stop of a door closing signal is detected by step S23, and if the output stop of a door closing signal is detected by step S23, it will transfer to step S24.

  When the process proceeds to step S24, the vehicle body side microcomputer 71 performs door end rubber break determination processing. When the door rubber 5a has cracks, holes, or the like, the value of the pressure signal P decreases after it increases immediately before the door 2a is closed. Therefore, based on the value of the pressure signal P, the microcomputer 71 determines that a crack or the like has occurred in the door rubber 5a when the value of the pressure signal P decreases. Then, in step S25, there is an abnormality, that is, "NO" is determined, and the process proceeds to step S26.

  The vehicle body side microcomputer 71 turns on the output of the door end rubber detection signal in step S26. Then, the door rubber detection signal is supplied from the output circuit 73 of FIG. 4 to the vehicle control device. Then, based on the fact that the control device turns on the abnormality notification lamp in response to the door rubber detection signal, the crew member is notified of the abnormality of the door rubber 5a. Thereafter, the microcomputer 71 proceeds to step S27, turns off the output of the door pinching detection signal, and returns to step S1 in FIG.

(D) When there is a door clamp The two-dot chain line in FIG. 7 shows the pressure signal P when there is a door clamp. In this case, the pressure signal P increases rapidly (T3 to T4) and reaches an abnormal value (T4) based on the occurrence of door pinching. After that, the pressure signal P decreases based on the air in the cylindrical portion 29 leaking through a crack or the like (T4 to T5), and becomes a constant normal value (T5 to T6).

  When the restart of the door 2 is started (T6), the crushing force acting on the cylindrical portion 29 is reduced, so that the cylindrical portion 29 is elastically restored. At this time, the pressure signal P rapidly decreases and becomes negative pressure (T6 to T7). Thereafter, the pressure signal P increases (T7 to T8) and reaches a normal value (T8 to) based on the air in the door stop portion 25 flowing into the cylindrical portion 29 through a crack or the like due to a pressure difference. Hereinafter, the control content of the vehicle body side microcomputer 71 when there is a door clamp will be described.

  The vehicle body side microcomputer 71 detects “opening / closing pressure P2a> minimum opening / closing pressure P2” in step S18 of FIG. 8, calculates a door pinching judgment value P3 in step S19, and in step S20 “opening / closing pressure P2a ≧ door pinching judgment value P3”. ”Is detected. In step S22, the output of the door pinching detection signal is turned on to turn on the abnormality display lamp and notify the crew member of the door pinching. Then, since the door 2 is restarted based on the crew operating the restart switch, it is possible to eliminate the pinching of the door based on removing the bag or the like.

  The vehicle body side microcomputer 71 returns from step S23 to S15 because there is a door closing signal although the door 2 is restarted. In step S16, the pressure signal P is detected. In step S17, the pressure signal P is set to the opening / closing pressure P2a. In step S18, the opening / closing pressure P2a is compared with the minimum opening / closing pressure P2. The open / close pressure P2a is a negative pressure, as shown at T6 to T8 in FIG. 7, and is smaller than the minimum open / close pressure P2 at the normal time. Accordingly, the vehicle body side microcomputer 71 proceeds from step S18 of FIG. 8 to step S23.

As described above, according to the present embodiment, the following effects can be obtained.
(1) The door side microcomputer 55 transmits the pressure signal according to the output signal of the pressure sensor 59 for detecting the internal pressure of the cylindrical portion 29 formed on the door rubber 5a via the secondary coil L2. The vehicle body side microcomputer 71 determines whether an abnormality such as a crack or breakage has occurred in the door rubber 5a based on the value of the pressure signal P received via the primary coil L1 of the terminal unit 12, and the abnormality has occurred. The door rubber 5a outputs a door rubber detection signal indicating that the door rubber 5a is broken. The crew member can confirm the abnormality (deterioration) of the door-end rubber 5a by using an abnormality notification lamp that is turned on in response to the door-end rubber detection signal by the control device. And when a crew member asks a maintenance worker to replace the door-end rubber 5a, it is possible to prevent erroneous detection of the door pinching due to the deteriorated door-end rubber 5a.

  (2) The door pinching determination value P3 is calculated based on the minimum opening / closing pressure P2 when the door 2 is closed from the open position, and compared with the opening / closing pressure P2a when the door 2 is closed from the open position. For this reason, when the door 2 is in the open state and the direct contact sunlight is applied to the door stop portion 25 of the door rubber 5a, the pressure value P2a including a rapid temperature increase and the door pinching determination value P3 including the rapid temperature increase. Are compared with each other, the sudden temperature rise is canceled, and the presence or absence of the door pinching can be accurately determined.

  (3) The lowest value P2 when the door 2 is closed from the open position is used as the pressure value when calculating the door pinching determination value P3. Therefore, when the door 2 is closed from the open position, when the passenger is approaching the door stop 25 or when a passenger or an object hits the door stop 25, the internal pressure of the detection pressure chamber 30 is temporarily increased. Although it rises, the temporary rising pressure is no longer used for the calculation of the door pinching judgment value P3, so that the presence / absence of door pinching can be accurately determined from this point.

  (4) The value of the pressure signal P received first by the terminal unit 12 and the controller 14 when the door 2a is closed is set as the minimum switching pressure P2, and the door is pinched when the detected switching pressure P2a is larger than the minimum switching pressure P2. Judgment was made. Accordingly, the door pinching determination value P3 is not set to an abnormally small value based on the negative pressure. Therefore, when the door 2 is closed from the restart state, the door pinching determination value P3a is returned to the positive pressure side. The value P3 is not exceeded, and false detection of door pinching is prevented.

  (5) The door clamping determination value P3 is corrected based on the difference between the closing pressure P0 when the door 2 is closed and the minimum closing pressure P1 when the door 2 is opened from the closed state. For this reason, the pressing force acting on the cylindrical portion 29 of the door rubber 5a in the closed state of the door 2 is detected as a difference between the closing pressure P0 and the minimum closing / opening pressure P1, and the door pinching determination value P3 is corrected based on the difference. Therefore, the variation in the pressing force due to the assembly error and manufacturing error of the door 2 and the door end rubber 5a is cancelled. Therefore, it is prevented that the opening / closing pressure P2a does not exceed the door pinching judgment value P3 when the clothes are pinched, or does not exceed the door pinching judgment value P3 even if a bag or the like is pinched. It can be increased compared to the conventional case.

  (6) The pressure signal P is transmitted from the door side microcomputer 55 to the vehicle body side microcomputer 71, and the vehicle body side microcomputer 71 detects the presence or absence of the door pinching based on the pressure signal P. For this reason, unlike the case where the presence or absence of door pinching is determined by the door-side microcomputer 55 to which power is supplied / shut off, a non-volatile memory for storing the pressure signal P is not required, and the component cost is reduced. Moreover, maintenance such as replacement of the non-volatile memory is not required, so that maintenance and inspection are simplified.

  (7) Since the first pressure relief hole and the second pressure relief hole are provided in the first pressure passage 44 and the second pressure passage 48, the reference tube 41 and the second pressure passage 48 of the first pressure passage 44 are provided. When the detection tube 45 is connected to the pressure sensor 59 and then press-fitted into the reference pressure chamber 22 and the detection pressure chamber 30, the reference pressure chamber 22 and the detection pressure chamber 30 are connected to the first pressure release hole and the second pressure chamber 30. It is opened to the outside through the punching hole. If the fixing member 49 is fixed to the door 2 in this state and the first and second pressure release holes are closed with the sealing material of the fixing member 49, the inside of the reference pressure chamber 22 and the detection pressure chamber 30 are at the same level. Of atmospheric pressure. Therefore, the differential pressure between the internal pressure of the reference pressure chamber 22 and the internal pressure of the detection pressure chamber 30 exceeds the judgment level of the door pinching to the extent that the door stop portion 25 of the door rubber 5a comes into contact with the counterpart door stop portion 25. In addition, even if a scissors or the like is pinched, the differential pressure does not exceed the door pinning determination level, so that the pinch detection accuracy is further increased.

In addition, you may implement each said embodiment in the following aspects.
In the above embodiment, the microcomputer 71 determines whether or not an abnormality has occurred in the door rubber 5a by comparing the value of the pressure signal P with a reference value. It may be. When abnormality has occurred in the door end rubber 5a, as shown in FIG. 7, the value of the pressure signal P decreases according to air leakage. Accordingly, the microcomputer 71 stores the value of the pressure signal P at a predetermined timing after the door 2a is closed or after detecting the door pinching, and after the next predetermined period has elapsed (for example, the time is measured by a timer function). The pressure signal P may be compared with the stored value, and it may be determined that an abnormality has occurred in the door rubber 5a when the value of the pressure signal P is low.

  Further, when an abnormality occurs in the door rubber 5a, the value of the pressure signal P becomes a constant normal value as time elapses. Accordingly, the microcomputer 71 detects that the value of the pressure signal P is a normal value after a predetermined time has elapsed after detecting that the value of the pressure signal P increases (after T2a and T5 in FIG. 7). It may be determined as abnormal.

  Further, when the crack generated in the door rubber 5a is large, the value of the pressure signal P may not increase. In such a case, it may be determined that an abnormality has occurred in the door rubber 5a because the value of the pressure signal P does not change regardless of whether the door 2a is opened or closed.

  In the above embodiment, the microcomputer 71 compares the value of the pressure signal P with the reference value to determine whether or not an abnormality has occurred in the door rubber 5a, but the value of the pressure signal P and the reference A process of comparing a value may be executed a plurality of times, and it may be determined that an abnormality has occurred when the same comparison result continues a plurality of times. Alternatively, a plurality of values of the pressure signal P may be stored, and a value obtained by processing (for example, averaging or integrating) the plurality of values may be compared with a reference value.

  -In contrast to the above-described embodiment, detection of abnormality in the door rubber may be canceled in a communicable state. The detection can be canceled by, for example, not detecting the pressure, not determining the detected pressure, changing the determination reference value, and not outputting the determination result. The period for canceling this detection is set as appropriate. For example, since the pressure temporarily fluctuates when the sandwiched object is removed, such a period may be set as a canceling period.

  Further, detection may be canceled according to a signal supplied from the outside. In the above example, in order to detect an abnormality in the door rubber provided on the door of the vehicle, a signal corresponding to the speed of the vehicle may be supplied, and the detection may be canceled according to the signal.

  In the above embodiment, the reference pressure chamber 22 is formed in the door rubber 5a. However, the present invention is not limited to this, and the reference pressure chamber 22 may be omitted. In the case of this configuration, it is preferable to output a pressure signal P corresponding to only the internal pressure of the pressure chamber 30 for detection from the pressure sensor 59 and detect the presence or absence of door pinching based on the pressure signal P.

  In each of the above embodiments, the door pinching determination value P3 is corrected based on the minimum closing / opening pressure P1, but the present invention is not limited to this. For example, the door closing determination value P3 is closed when a set time has elapsed from the output of the door opening signal. The door pinching determination value P3 may be corrected based on the opening pressure P1a. In this case, when determining whether or not the minimum opening / closing pressure P2 can be updated, the opening / closing pressure P2a may be compared with the closing / opening pressure P1a when a set time has elapsed from the output of the door opening signal.

  In each of the above embodiments, the minimum opening / closing pressure P2 is used as the minimum pressure value when the door 2 is opened from the closed position. However, the present invention is not limited to this. A value may be used. In short, a pressure value near the lowest when the door 2 is opened from the closed position may be used. The “minimum value of the pressure signal” described in the claims is defined by the concept. Moreover, although the cylindrical part 29 was provided in the door stop part 25 and it was set as the structure which detects the internal pressure of the cylindrical part 29, it is not limited to this, For example, the control wall part 26, the 1st connection board 27, the 1st The connecting plate 28 and the cylindrical portion 29 may be eliminated, and the internal pressure of the door stop portion 25 may be detected.

  In each of the above embodiments, the closing pressure P0 may be set by a pressure setting member 92 provided in the vehicle body 91 as shown in FIG. The pressure setting member 92 is, for example, a camouflage receiver. As shown in FIG. 12, the mounting portion 92a attached to the upper lower surface of the entrance 3 of the vehicle body 91, and the lower surface center of the mounting portion 92a downward. It is comprised from the setting part 92b extended toward. The pressure setting member 92 is fixed so that the setting portion 92b is disposed at the center of the doors 2a and 2b (indicated by a one-dot chain line in the drawing).

  The setting part 92b is set to engage with the door contact part 25 of the door end rubber 5a when the door is closed. The positions of the doors 2a and 2b when the door is closed vary depending on variations in attachment to the vehicle body 91, actuators that open and close the doors 2a and 2b, and the like. Due to this variation, the door stop portions 25 of the doors 2a and 2b may not be deformed. In such a case, the closing pressure P0 is not set correctly.

  As shown in FIG. 13, the setting part 92b deforms the door stop part 25 when the door is closed. That is, the width of the door 2a, 2b in the opening / closing direction is set in the setting unit 92b so that the door stop 25 is reliably deformed including the positional variation of the doors 2a, 2b. Then, due to the deformation of the door stop portion 25, the cylindrical portion 29 is crushed similarly to the above embodiment, and the internal pressure of the detection pressure chamber 30 becomes higher than when the door is not closed.

  The microcomputer 71 shown in FIG. 4 detects the internal pressure of the pressure chamber 30 for detection at this time, and sets the detection result as the closing pressure P0. Thus, by providing the pressure setting member 92, the closing pressure P0 can be set reliably, and the abnormality of the door-end rubbers 5a and 5b can be detected.

  The pressure setting member is not limited to one that elastically deforms the cylindrical portion 29 via the door rubber 5a, but may be any member that forcibly changes the pressure detected by the pressure sensor 59. For example, since the detection tubes (connection tubes) 45 and 47 shown in FIG. 3 are made of silicon rubber, they can be elastically deformed. For this reason, a pressure setting member formed to forcibly elastically deform at least one of the detection tubes 45 and 47 is disposed in the vehicle. In this way, the internal pressure of the pressure chamber formed in the door rubber 5a is changed by forcibly elastically deforming the elastically deformable portion provided other than the door rubber 5a, and the closing pressure P0 is reliably set. It is possible to detect abnormalities in the door rubbers 5a and 5b. The material of the detection tubes 45 and 47 is not limited to silicon rubber as long as it can be elastically deformed.

  Further, the portion (pressure changing portion) that is forcibly elastically deformed by the pressure setting member is not limited to a tubular member, and for example, a portion formed in a diaphragm shape or a bellows may be forcibly deformed.

  For example, as shown in FIGS. 16A to 16C, the door-end rubber 112 attached to the tip of the door 111 is connected to the pressure port portion 114 via the pressure guide tube 113, and the pressure port portion 114 is connected to the pressure port portion 114. Is coupled with an elastically deformable bellows 115. The pressure port portion 114 is coupled to a pressure sensor 116, and the pressure sensor 116 is connected to the terminal unit 117. The terminal unit 117 is guided along the opening / closing direction of the door 111 by a guide shaft 118 fixed to the vehicle body. A pressure setting member 119 is fixed to one end of the guide shaft 118 (the right end in FIG. 16A). As the door 111 is opened and closed, the terminal unit 117, the pressure sensor 116, the pressure port 114, and the bellows 115 move along the guide shaft 118, and the bellows 115 is crushed by the pressure setting member 119. With such a configuration, the abnormality of the door rubber 112 is detected.

  In each of the above embodiments, the secondary coil L2 is magnetically coupled to the primary coil L1 only when the door 2 is in the vicinity of the closed position. However, the present invention is not limited to this. The secondary coil L2 may be magnetically coupled to the primary coil L1 over the entire moving range. Further, the power is supplied from the vehicle body 1 to the pressure unit 11 in a non-contact manner, but the present invention is not limited to this, and may be supplied using, for example, a power cable. Further, although the signal is transmitted from the pressure unit 11 to the terminal unit 12 in a non-contact manner, the detection signal from the pressure unit 11 may be transmitted to the terminal unit 12 via a communication cable.

  For example, as shown in FIG. 14, the controller 101 is disposed in a vehicle not shown. The controller 101 is connected to terminal units 103a and 103b via cables 102a and 102b. The terminal units 103a and 103b are fixed to upper ends of doors 104a and 104b provided on the vehicle. The cables 102a and 102b are configured to enable communication between the controller 101 and the terminal units 103a and 103b regardless of whether the doors 104a and 104b are opened or closed.

  The terminal units 103a and 103b are connected to pressure sensors (sensor heads) 105a and 105b, respectively. The pressure sensors 105a and 105b are respectively arranged in door rubbers 106a and 106b attached to the respective tips of the doors 104a and 104b. Each of the pressure sensors 105a and 105b outputs a pressure signal corresponding to the internal pressure of a pressure chamber (not shown) formed in the door rubbers 106a and 106b, respectively. The terminal units 103a and 103b include A / D converters that convert pressure signals (analog signals) output from the pressure sensors 105a and 105b, respectively, and transmit the converted digital signals to the controller 101. The controller 101 determines the breakage of the door rubbers 106a and 106b based on the signals received from the terminal units 103a and 103b.

  In FIG. 14, the pressure sensors 105a and 105b are arranged in the door rubbers 106a and 106b. However, as shown in FIG. 15, the pressure sensor 105a may be fixed to the upper end of the door 104a. In this case, the pressure sensor 105a detects the internal pressure of the pressure chamber via the pressure guiding tube 107a communicating with the pressure chamber formed in the door rubber 106a, and outputs a pressure signal corresponding to the detected pressure. In FIG. 15, only the configuration for the door 104a is shown, but the same configuration can be applied to the door 104b shown in FIG.

  When power is supplied and signals are transmitted using a cable, in the configuration shown in FIG. 1, the pressure unit 11 and the terminal unit 12 are integrated, the terminal unit 12 and the controller 14 are integrated, and the pressure unit 11 The configuration may be changed as appropriate, for example, the terminal unit 12 and the controller 14 are integrated. Further, in the configuration shown in FIG. 15, the pressure sensor 105a and the terminal unit 103a may be configured integrally. By integrating the units, it is possible to simplify attachment and removal, and to omit wiring for connecting the units.

-In each said form, although the pressure unit 11 grade | etc., Was arrange | positioned at the upper part of a door, an arrangement position is not limited to upper part, For example, you may arrange | position to the lower part of a door.
-In each said form, although the entrance / exit 3 was opened and closed by the two doors 2, it is not limited to this, For example, you may open and close by the one door 2. FIG. In this case, the door rubber 5 a comes into contact with the vehicle body 1 when the door 2 is closed. Moreover, in each said form, although this invention was applied to the sliding door 2, you may apply to a folding door. In each of the above embodiments, the present invention is applied to the train door 2. However, the present invention is not limited to this, and can be applied to all vehicle doors such as bus doors, ship doors, airplane doors, and the like. .

  2a, 2b ... door, 3 ... entrance / exit, 5a, 5b ... door rubber, 11 ... pressure unit, 12 ... terminal unit, 14 ... controller, 22 ... reference pressure chamber, 29 ... cylindrical part (hollow part) 30 ... detection Pressure chamber, 59 ... pressure sensor, 71 is a vehicle body side microcomputer (opening / closing pressure detecting means, judgment value calculating means, door pinching detecting means, breakage detecting means), P ... pressure signal, P0 ... closing pressure, P2 ... lowest value , P3: door-slip determination value.

Claims (6)

A door rubber provided on a door that opens and closes a vehicle entrance and exit and has a hollow portion that is elastically deformable;
A pressure sensor that outputs a pressure signal corresponding to the internal pressure of the hollow portion;
An open / close pressure detecting means for detecting a minimum value of the pressure signal each time the door is closed from an open state;
Determination value calculating means for calculating a door pinching determination value based on the lowest value of the pressure signal each time the door is closed from an open state;
A door clamp provided with door pinch detection means for detecting the presence or absence of door pinch based on comparing a pressure signal output from the pressure sensor with the door pinch judgment value every time the door is closed from an open state. In the detection device,
Fracture that captures a pressure signal output from the pressure sensor at a predetermined timing when it is closed by the opening / closing pressure detection means, determines breakage of the door rubber based on this pressure signal, and outputs an abnormal signal A door pinching detection device comprising a detection means. The predetermined timing is a plurality of timings within a predetermined period,
The break detecting means determines breakage of the door rubber based on a plurality of pressure signals respectively taken from the pressure sensor at a plurality of timings, based on a decrease in the pressure signal by a predetermined level. The door pinching detector according to claim 1.   2. The door pinching detection device according to claim 1, wherein the breakage detection means determines the breakage of the door-end rubber when the level of the pressure signal does not change regardless of whether the door is opened or closed. A closing pressure detecting means that uses a pressure signal output from the pressure sensor when the door is closed as a closing pressure;
The break detection means determines the breakage of the door rubber by comparing the closing pressure with the minimum value.
The door pinching detection device according to claim 1 or 2. A pressure changing portion that is communicated with the inside of the hollow portion and formed to be elastically deformable;
The vehicle is provided with a pressure setting member that forcibly elastically deforms at least one of the hollow part and the pressure change part,
The break detection means determines breakage of the door rubber based on a pressure signal output from the pressure sensor with respect to the forced elastic deformation.
The door pinching detection apparatus according to any one of claims 1 to 4, wherein:   The door pinching detection device according to claim 5, wherein the pressure changing unit is a connecting pipe that connects the hollow part and the pressure sensor, and at least a part thereof is formed to be elastically deformable.

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