JP2000095106A - Device to detect catching in car door - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a device to detect trapping of objects in car doors that can reliably assure safety of passengers when getting into and alighting from a vehicle, and can be installed without impairing working efficiency. SOLUTION: This device is configured such that power is supplied and detection signals to indicate whether or not anything is caught in a door are sent and received through an electro-magnetic induction coupling which is established between a terminal 7 on the vehicle body side and a unit 8 on the car door side. Portions in the terminal 7 and the unit 8 are constituted of materials that have a higher magnetic permeability than that of the material making up the vehicle body or car door to which the terminal 7 or the unit 8 is fitted. This eliminates the necessity for a cable between the vehicle body and the car door, and ensures the detection of catching in a door and the safety of passengers can be reliably assured. In addition, when the device is fitted, the electrical characteristics of the coil are not changed under the influence of the material constituting the vehicle body or car door, and therefore all that needs to be done is to adjust the electrical characteristics before fitting the device: working efficiency is not impaired.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door jam detector for detecting that a part of a body or belongings is jammed when a vehicle door is closed.

[0002]

In vehicles such as trains and buses, in order to ensure the safety of passengers, when a vehicle door is closed, a part of the body or belongings is trapped. A door pinch detection device for detecting is provided. This door pinch detection device is provided with, for example, a door tip rubber at a tip end portion of a vehicle door, and detects a pressed state of the door tip rubber when the vehicle door is closed to determine whether or not the door is pinched. It is to detect whether or not. That is, the door pinch detection device is configured such that when a part of the body or belongings is pinched when the vehicle door is closed, the door rubber is pressed in an unusual state. By detecting a change in the pressed state, it is possible to detect a pinched state of the door.

In such a door-jam detecting device, it is necessary to supply electric power from the vehicle body side to the vehicle door-side when detecting whether or not the door is jammed. It is necessary to transmit a detection signal indicating that the door is being pinched from the door side to the vehicle body side. Therefore, in the conventional one, the vehicle body side and the vehicle door side are connected with a cable,
Power supply and detection signal transmission / reception have been performed between the vehicle body side and the vehicle door side via a cable. In this case, as the cable, a cable having sufficient durability against bending has been adopted because the vehicle door frequently reciprocates to open and close the entrance and flexes accordingly. .

However, even if the cable has sufficient durability against bending, it is unavoidable that the cable may be broken due to fatigue or deterioration. Therefore, such a cable is employed. The configuration is unreliable in terms of ensuring passenger safety. In particular, when the cable is disconnected while the door is pinched, the vehicle may start with the body pinched, for example.

In order to solve such a problem, a method of supplying electric power between the vehicle body side and the vehicle door side and transmitting / receiving a detection signal using electromagnetic induction coupling has been considered. In this case, as a specific configuration, a resonance circuit including a capacitor and a coil is provided on both the vehicle body side and the vehicle door side, electromagnetic induction coupling is established by the resonance circuits, and power supply and detection signals are provided. May be transmitted and received. This eliminates the need for a cable connecting the vehicle body side and the vehicle door side.
The safety of the passengers can be ensured without breaking the cables.

However, in this configuration, as described above, the resonance circuits are mounted on the vehicle body side and the vehicle door side, respectively. In this case, considering that the vehicle body and the vehicle door are made of metal. In addition, there is a problem in that the electrical characteristics of the coil forming the resonance circuit change under the influence of the metal. Therefore, even before the coil is mounted on the vehicle body and the vehicle door, even if the inductance of the coil is adjusted so that the resonance point becomes an optimum position, after the coil is mounted on the vehicle body and the vehicle door, As the inductance decreases or the DC resistance increases, the resonance point deviates from the optimum position. In this case, the power supplied to the coil is reduced and the power cannot be supplied accurately, or the communication efficiency of the detection signal is reduced and the transmission and reception of the detection signal cannot be performed properly. Will be.

[0007] Under such circumstances, it is necessary to adjust the inductance of the coil so that the resonance point is at an optimum position after the coil is mounted, rather than before the coil is mounted. Since the adjustment is performed while moving the place, the working efficiency is extremely poor. In addition, when an abnormality occurs for some reason, the inspection is performed in a state where the coil is mounted, which is extremely inconvenient.

[0008] The present invention has been made in view of the above circumstances, and an object of the present invention is to ensure the safety of passengers by accurately detecting whether or not a door is in a pinched state. In addition, it is an object of the present invention to provide a door jam detecting device capable of easily performing an inspection without lowering work efficiency when mounting.

[0009]

According to a first aspect of the present invention, there is provided a door entrapment detecting device, comprising: a power supply unit provided on a vehicle body side; and a first case mounted on a first mounting portion near a doorway on the vehicle body side. And a first coil housed in the first case and supplied with electric power from the electric power supply means, and a second coil attached to a second attaching portion on a vehicle door side that opens and closes a doorway of the vehicle body. Case 2, a second coil housed in the second case, and electromagnetically inductively coupled with the first coil, and a second coil provided on the vehicle door side. Power generating means for generating power in response to the electromagnetic induction coupling between the coil and the coil, and provided on the vehicle door side, based on the power generated by the power generating means whether or not the door is sandwiched state And a detection signal indicating the detection result is sent to the first Detecting means for transmitting to the vehicle body side by electromagnetic induction coupling between the coil and the second coil, wherein at least the first mounting point side of the first case is the first mounting point side. The second case is formed of a material having a magnetic permeability equal to or higher than the magnetic permeability of the material, and at least the second mounting portion of the second case has a magnetic permeability equal to or higher than the magnetic permeability of the material of the second mounting portion. (Chart 1).

According to such a configuration, when the first coil provided on the vehicle body side and the second coil provided on the vehicle door side are electromagnetically inductively coupled to each other,
The power generation means generates power in response to electromagnetic coupling between the first coil and the second coil, and the detection means
Based on the electric power generated by the electric power generation means, it is detected whether or not the vehicle is in a door-jam state, and a detection signal indicating the detection result is transmitted to the vehicle body by electromagnetic induction coupling between the first coil and the second coil. Send to

As described above, electric power is supplied from the vehicle body to the vehicle door by the electromagnetic induction coupling between the first coil provided on the vehicle body and the second coil provided on the vehicle door. In addition, since the detection signal is transmitted from the vehicle door side to the vehicle body side, unlike the conventional one,
A cable for connecting the vehicle body side and the vehicle door side can be dispensed with, so that the cable does not break. As a result, it is possible to accurately detect whether or not the vehicle is in the door-jam state, so that the safety of passengers can be reliably ensured, and reliability can be improved.

At this time, the first case for accommodating the first coil is to be attached to a first attachment point near the entrance on the vehicle side, and at least the first attachment point in the first case. Since the magnetic permeability of the material on the side of is not less than the magnetic permeability of the material of the first mounting point, when mounting the first case to the first mounting point, before and after mounting,
The inductance does not decrease, the DC resistance does not increase, and the resonance point does not shift.

[0013] Thus, before mounting the first case to the first mounting location, it is sufficient to adjust the inductance of the coil so that the resonance point is at an optimum position. There is no necessity, and there is no reduction in work efficiency. In addition, when an abnormality occurs for some reason, the first case can be removed from the first mounting portion and the inspection can be performed, so that the inspection can be easily performed.

The relationship between the second case accommodating the second coil and the second mounting portion on the side of the vehicle door is the same as that described above. It is only necessary to adjust the inductance of the coil so that the resonance point is at the optimum position before the coil is mounted at the mounting position. There is no need to perform the adjustment after the coil is mounted, and the working efficiency does not decrease. Further, when an abnormality occurs for some reason, the inspection can be performed easily by removing the second case from the second mounting portion, and performing the inspection.

Further, in the door pinch detection device having the above-described configuration, the first coil and the second coil are provided on the vehicle body side and control the level of electric power supplied to the first coil. A first signal pattern generation means for controlling a level of electromagnetic induction coupling during the period and generating a signal pattern based on a change in the level of the electromagnetic induction coupling;
The detection means may be configured to start detecting whether or not the door is in a closed state by determining a signal pattern generated by the first signal pattern generation means (claim 2). .

According to such a configuration, on the vehicle body side, the first signal pattern generating means controls the level of the electric power supplied to the first coil to thereby control the first coil and the second coil. , And generates a signal pattern based on the change in the level of the electromagnetic induction coupling. On the vehicle door side, the detection unit detects the signal generated by the first signal pattern generation unit. The pattern is determined, and detection of whether or not the door is in a pinched state is started.

As described above, electric power is supplied from the vehicle body side to the vehicle door side, and the start timing of detecting whether or not the vehicle is in the door-jam state is identified using the signal pattern due to the level change of the electromagnetic induction coupling. Can be separately
There is no need to provide a configuration for generating a signal for identifying the detection start timing, and the configuration can be simplified accordingly.

Further, in the door pinch detection device having the above-described configuration, the first coil and the second coil are provided on the vehicle door side and controlling the level of electric power supplied to the second coil. A second signal pattern generation unit that controls a level of the electromagnetic induction coupling between the coil and the coil and generates a signal pattern based on a change in the level of the electromagnetic induction coupling; The signal pattern may be generated by the signal pattern generated by the second signal pattern generating means (claim 3).

According to such a configuration, on the vehicle door side, the second signal pattern generation means controls the level of the electric power supplied to the second coil to thereby control the first coil and the second coil. The level of the electromagnetic induction coupling between the coil and the coil is controlled, and a signal pattern is generated based on the change in the level of the electromagnetic induction coupling. The detection means outputs the detection signal to the signal pattern generated by the second signal pattern generation means. Generated by

As described above, the detection signal, that is, the detection result as to whether or not the door is in the state of being pinched can be identified by using the signal pattern due to the level change of the electromagnetic induction coupling. Therefore, there is no need to provide a configuration for generating a signal for performing the operation, and the configuration can be simplified accordingly.

[0021]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the present invention is applied to a train will be described below with reference to the drawings. ◎ First, Figure 2
In the vehicle 1, a vehicle door 3 is provided on a vehicle body 2 of the vehicle. The entrance 4 of the vehicle body 2 is opened and closed in response to the vehicle door 3 reciprocating in the directions of arrows A1 and A2 in FIG. In this case, the vehicle body 2 and the vehicle door 3 are mainly composed of an iron material.

The door jam detector 5 comprises a controller 6, a terminal 7 and a unit 8. The controller 6 is mounted under the floor of the vehicle body 2, and the terminal 7 is mounted above the entrance 4. The unit 8 is mounted on the upper part of the vehicle door 3.
The controller 6 and the terminal 7 are connected to the cable 9, the nylon connectors 10, 11 and the cable 12
Connected through. In FIG. 2, the controller 6 and the terminal 7 corresponding to the vehicle door 3 on the left side in FIG.
And only the unit 8 and the like, and the controller, terminal, unit and the like corresponding to the vehicle door 3 on the right side are omitted in the figure.

Next, a specific configuration of the terminal 7 will be described with reference to FIGS. FIG.
Shows a plan view (a) and a front view (b) of the terminal 7, and FIG. 4 shows an exploded view of the terminal 7. The case 13 (the first case in the present invention) of the terminal 7 is formed by combining an iron main case 14a and a resin cover 14b.
a, a printed wiring board 15 on which various electronic components such as a capacitor, a resistor, and an NPN transistor are mounted, and a coil 17 wound around a bobbin 16 (the first coil of the present invention). The cover 14b is bolted to the main case 14a with bolts 18 in a state where the coil is disposed.

The cable 12 is connected to a predetermined portion of the terminal 7, and the nylon connector 11 is provided at the end of the cable 12 (see FIG. 2). In FIG. 4, the cable 12 is omitted. In this case, when electric power is supplied to the coil 17 and an electromagnetic field is generated from the coil 17, the electromagnetic field is transmitted to the space through the cover 14b because the main case 14a is made of iron and the cover 14b is made of resin. It is radiated.

Next, a specific structure of the unit 8 will be described with reference to FIGS. FIG.
FIG. 6 shows a plan view (a), a front view (b), and a side view (c) of the unit 8, and FIG. 6 shows an exploded view of the unit 8. The case 19 of the unit 8 (the second
Is a combination of an iron main case 20b integrally formed with a mounting portion 20a and a resin cover 20c. Inside the main case 20b, a capacitor and a resistor And a printed circuit board 21 on which various electronic components such as an NPN transistor are mounted is bolted by a bolt 22 via a nut 22a, and a pressure sensor 23 electrically connected to the printed circuit board 21 is a screw 24. Coil 26 wound around the bobbin 25
The cover 20c is bolted to the main case 20b with bolts 27 in a state where the (second coil according to the present invention) is provided.

The pressure sensor 23 is provided with nylon connectors 28 and 29 as two pressure ports.
The nylon connectors 28 and 29 are connected to the main case 2
0b. In this case, when power is supplied to the coil 26 and an electromagnetic field is generated from the coil 26, the electromagnetic field is transmitted to the space through the cover 20c because the main case 20b is made of iron and the cover 20c is made of resin. It is radiated.

FIG. 7 is a plan view (a), a front view (b) and a side view (c) of a state in which the terminal 7 is mounted on the vehicle body 2 and a state in which the unit 8 is mounted on the vehicle door 3. ). Iron plate 3 constituting body 2
0, two mounting plates 31 are fixedly mounted on the inner wall surface 30a by welding.
As a result, the main case 14a and the inner wall surface 30a (the first mounting point in the present invention) are fixed to the inner wall surface 30a of the iron plate 30 so as to face each other. At this time, since the main case 14a and the inner wall surface 30a of the iron plate in the terminal 7 are made of the same material, their magnetic permeability is equal.

The unit 8 has a mounting portion 20a of the main case 20b screwed to an upper portion of the vehicle door 3 so that the main case 20b and the upper surface portion 3a of the vehicle door 3 (the fourth embodiment of the present invention) can be formed. 2 is attached and fixed to the upper surface portion 3a of the vehicle door 3 so that the upper surface 3a faces the upper portion 3a. At this time, the main case 20b of the unit 8 and the upper surface 3a of the vehicle door 3 are made of the same material, and therefore have the same magnetic permeability. In this case, when the vehicle door 3 reciprocates in the directions of arrows A1 and A2 in FIG. 2, the unit 8 reciprocates along the longitudinal direction of the terminal 7.

When the vehicle door 3 is in the door-closing position that closes the entrance 4, that is, in the state shown in FIG. 2, the terminal 7 and the unit 8 are connected to each other as shown in FIG.
As shown in the middle (a), the coil 17 is disposed in a facing relationship, that is, the coil 17 disposed in the terminal 7 and the coil 26 disposed in the unit 8 are opposed to each other. On the other hand, when the vehicle door 3 is at the door opening position where the entrance 4 is opened, the terminal 7 and the unit 8
Means that the coils 17 and 26 do not face each other as shown in FIG. 8B.

FIG. 9 shows the structure of a main part of the vehicle door 3. At the front end (door tip) of the vehicle door 3, a door rubber 32 is provided over substantially the entire upper end to lower end of the vehicle door 3. As shown in FIG. 10, the door tip rubber 32 integrally has a door stop portion 33 having a substantially semicircular cross section and a mounting portion 34 having a substantially rectangular cross section. The mounting portion 34 is inserted and fixed in a concave portion formed at the front end portion of the vehicle door 3, whereby the door rubber 3
2 is fixed to the tip of the vehicle door 3. In addition, the door stop 33 protrudes from the end surface of the vehicle door 3,
Thereby, when the vehicle door 3 is closed, that is, when the vehicle door 3 collides with the vehicle door 3 that is paired with the vehicle door 3, an impact is reduced.

In FIG. 10, a first connecting portion 33a is integrally formed on the inner bottom wall of the door stop portion 33 and on the vehicle inner side, and is formed on the inner peripheral wall of the door stop portion 33 on the vehicle inner side. Is integrally formed with a second connecting portion 33b. A cylindrical portion 33c is integrally formed at the distal ends of the first connecting portion 33a and the second connecting portion 33b, and the inside of the cylindrical portion 33c extends from the upper end to the lower end of the door rubber 32. The hollow portion 33d penetrates through the gap. Further, a regulating wall portion 33e is integrally formed on the inner bottom wall of the door stop portion 33 and outside the vehicle.

The upper end of the hollow part 33d of the door stop part 33 is
One end of the “L” -shaped silicon tube connecting tube 35 is inserted and closed, and the lower end of the hollow portion 33 d is double closed by closing members 36 and 37.
Thereby, the air in the hollow portion 33d is sealed.
The other end of the silicon tube connecting pipe 35 is connected to a nylon connector 28 as one pressure port of the pressure sensor 23 disposed in the unit 8 via a silicon tube 38, whereby the pressure is reduced. Sensor 2
3 is the pressure of the air in the hollow part 33d of the door stop part 33,
The detection can be performed through the silicon tube connecting pipe 35 and the silicon tube 38.

On the other hand, the mounting portion 34 has a hollow portion 34a penetrating from the upper end to the lower end of the door rubber 32. The upper end of the hollow portion 34a of the mounting portion 34 is
One end of the “L” -shaped silicon tube connecting tube 39 is inserted and closed, and the lower end of the hollow portion 34 a is double closed by closing members 40 and 41.
Thereby, the air in the hollow portion 34a is sealed.
The other end of the silicon tube connecting pipe 39 is connected to the nylon connector 29 as the other pressure port of the pressure sensor 23 via the silicon tube 42, whereby the pressure sensor 23 The pressure in the air in the hollow portion 34a is increased by the silicon tube connecting pipe 3.
9. It can be detected through the silicon tube 42.

Further, a core rubber 43 is provided above the door rubber 32, and a core rubber 44 (see FIG. 10) is provided below the rubber door 32. The core rubbers 43 and 44 function as reinforcing members for the door stop portion 33 of the door rubber 32.

In the thus constructed door tip rubber 32, when a force to the outside of the vehicle is applied to the door stop portion 33, the door stop portion 33 is elastically deformed, and the cylindrical portion 33c is connected to the second connecting portion 33b. However, at this time, since the movement is regulated by the regulating wall portion 33e, the cylindrical portion 33c is crushed, that is, the pressure of the air in the hollow portion 33d is reduced. Changes greatly. On the other hand, when a force to the vehicle interior acts on the door stop portion 33, the cylindrical portion 33c is pulled to the vehicle interior via the second connecting portion 33b, but at this time, since the movement is not restricted, The cylindrical portion 33c is not crushed, that is, the pressure of the air in the hollow portion 33d does not significantly change.

Even when a force acting on the outside of the vehicle acts on the door stop portion 33 or a force acting on the inside of the vehicle, the mounting portion 34 is, as described above, Since it is inserted and fixed in the recess of the vehicle door 3, it is not elastically deformed, that is, the pressure of the air in the hollow portion 34a does not change.

The core rubbers 43, 4 in the door rubber 32
In the section in which the door stop portion 4 is provided, the door stop portion 33 is not affected even when a force to the outside of the vehicle acts on the door stop portion 33 or even when a force to the inside of the vehicle acts on the door stop portion 33. It is not elastically deformed, and it is possible to detect whether or not a section other than this section, that is, a section in which the door rubber 32 is not provided with the core rubbers 43 and 44 is in a door sandwiching state which will be described in detail later. It is a section that is.

Next, the controller 6 and the terminal 7
The electrical configuration of the unit 8 will be described with reference to FIG. First, the controller 6 is configured to be supplied with power from a power supply device 45 (power supply means in the present invention) disposed at a predetermined position on the vehicle body 2. The input circuit 46 outputs the “door open signal” to the CPU 47 when the “door open signal” is given in response to the conductor performing the door opening operation, and the “door close signal” in response to the conductor performing the door closing operation. Signal, the "door closing signal" is sent to the CPU 4.
7 is output.

The output circuit 48 receives the "door entrapment detection signal" from the CPU 47 indicating that the door is entrapped, and outputs the "door entrapment detection signal" to, for example, an output means (L
ED). When receiving the demodulated data from the demodulation circuit 50 of the terminal 7, the filter circuit 49 removes a noise component from the demodulated data and converts the demodulated data from which the noise component has been removed to the oscillation frequency output from the oscillation circuit 51 of the terminal 7. Synchronously CPU4
7 is output.

The CPU 47 is constituted by a microcomputer, and executes a stored program to execute processing described later in detail.

The terminal 7 is supplied with power from a power supply device 45 in the same manner as the controller 6. The oscillating circuit 51 generates power at a predetermined oscillating frequency and outputs the given power to the frequency dividing circuit 52. The frequency dividing circuit 52 includes an oscillation circuit 51
When power is supplied from the power supply, the supplied power is frequency-divided and the frequency-divided power is output to the booster 53.

When the divided power is supplied from the frequency dividing circuit 52, the booster 53 amplifies the power, and supplies the amplified power to a series resonance circuit 55 in which a capacitor 54 and the coil 17 are connected in series. Output. The series resonance circuit 55 generates an electromagnetic field by the coil 17 when the amplified power is supplied from the booster 53. Note that the other of the series resonance circuit 55 is
It is grounded via a resistor 56.

When a base current is applied from the CPU 47 of the controller 6 via the buffer 58 to the NPN transistor 57, the NPN transistor 57 is turned on, and a part of the electric power charged in the capacitor 54 of the series resonance circuit 55 is transferred to the resistor 59.
, So that the power supplied to the coil 17 of the series resonance circuit 55 is reduced.

With such a configuration, the CPU 47 of the controller 6 controls on / off of the base current supplied to the NPN transistor 57, and
By controlling the power supplied to the coil 17 of No. 5, the level of electromagnetic induction coupling can be controlled. For example, a state where the level is larger than a predetermined level corresponds to data “1”, and By associating a state smaller than the level with data "0", a signal pattern composed of the data "1" and "0" can be transmitted by electromagnetic induction coupling. That is, the first signal pattern generating means 60 according to the present invention is constituted by the CPU 47 of the controller 6, the NPN transistor 57 of the terminal 7, and the series resonance circuit 55.

The demodulation circuit 50 demodulates the received data received by the coil 17 of the series resonance circuit 55 to generate demodulated data during electromagnetic induction coupling, and outputs the demodulated data to the filter circuit 49 of the controller 6. It is supposed to.

In the unit 8, a parallel resonance circuit 62 in which the coil 26 and the capacitor 61 are connected in parallel.
The (power generation means in the present invention) is adapted to be electromagnetically inductively coupled to the series resonance circuit 55 of the terminal 7 and to convert the AC power generated by the coil 26 at the time of electromagnetic inductive coupling into a capacitor 61. To charge.

The full-wave rectifier circuit 63 rectifies the AC power charged in the capacitor 61 to generate DC power, and outputs the DC power to the constant voltage circuit 64. When DC power is supplied from the full-wave rectifier circuit 61, the constant voltage circuit 64 converts the supplied DC power to a constant voltage,
The power converted to the constant voltage is output to the CPU 65.

The clock extraction circuit 66 includes the parallel resonance circuit 6
A clock signal synchronized with the AC power charged in the second capacitor 61 is generated, and the clock signal is output to the AND circuit 67. Further, the demodulation circuit 68 generates demodulated data by demodulating the received data received by the coil 26 of the parallel resonance circuit 62 at the time of electromagnetic inductive coupling,
The demodulated data is output to the CPU 65.

The NPN transistor 69 is connected to the CPU 65
When the base current is supplied from the AND circuit 67 through the above-described AND circuit 67, the transistor is turned on, and a part of the electric power charged in the capacitor 61 of the parallel resonance circuit 62 is changed to the collector current through the resistor 70. The power supplied to the coil 26 of the resonance circuit 62 is reduced.

With such a configuration, the CPU
65 controls the base current supplied to the NPN transistor 69 on and off, and controls the power supplied to the coil 26 of the parallel resonance circuit 62, thereby controlling the level of electromagnetic induction coupling. Are associated with the data “1” while the state where the level is smaller than the predetermined level is associated with data “0”.
A signal pattern consisting of "0" can be transmitted by electromagnetic induction coupling. That is, the second signal pattern generation means 71 according to the present invention uses
It comprises a PU 65, an NPN transistor 69 and a parallel resonance circuit 62.

As described above, the pressure sensor 23 is provided with two nylon connectors 28 and 29 as pressure ports. In addition to detecting the pressure, the pressure of the air in the hollow portion 34a of the mounting portion 34 is detected, and the detection results are output to the CPU 65.

The variable resistor 72 is provided as sensitivity adjusting means, and will be described in detail later.
5 adopts a value set by the variable resistor 72 as a judgment value, and executes a predetermined process.

The CPU 65 is constituted by a microcomputer, and executes a stored program to execute processing described later in detail. The detecting means 73 in the present invention
Is composed of the respective electronic components in the unit 8 described above.

Next, the operation of the above configuration will be described with reference to FIGS. FIG. 11 shows the contents of the processing executed by the CPU 47 of the controller 6, and FIG.
Shows the contents of the processing executed by the CPU 65 of the unit 8.

First, the CPU 47 of the controller 6
It is determined whether a "door open signal" has been input (step S
1). Here, when the conductor performs an operation to open the vehicle door 3, the CPU 47 of the controller 6 inputs a "door open signal".
S ", and waits for a predetermined time (step S2). Here, the predetermined time is a time from when the vehicle door 3 starts moving from the door closing position to the door opening position until a certain time elapses.

When the CPU 47 of the controller 6 detects that a predetermined time has elapsed, it supplies electric power to the series resonance circuit 55 of the terminal 7 to generate an electromagnetic field from the coil 17 of the series resonance circuit 55 (step S).
3). At this time, the vehicle door 3 is moving from the door closing position to the door opening position.

Now, in response to the generation of an electromagnetic field from the coil 17 of the series resonance circuit 55 in the terminal 7, the electromagnetic field is generated between the coil 17 of the series resonance circuit 55 and the coil 26 of the parallel resonance circuit 62 in the unit 8. When the inductive coupling is established, AC power is induced in the coil 26, the AC power is rectified by the full-wave rectifier circuit 63 to generate DC power, and the DC power is converted to a constant voltage by the constant voltage circuit 64. And is given to the CPU 65 of the unit 8.

The CPU 65 of the unit 8 includes a constant voltage circuit 6
When a constant voltage equal to or higher than a predetermined level is given from 4, that is, when the power supply voltage becomes OK, "YES" is determined in step S21, and a "wake-up signal" is transmitted by electromagnetic induction coupling (step S22). At this time, as described above, the CPU 65 of the unit 8
By controlling the base current supplied to the N-type transistor 69 on and off, a signal pattern including data “1” and “0” is generated, which is referred to as a “wake-up signal”.
As a transmission.

Next, the "wake-up signal" transmitted from the unit 8 is received by the terminal 7 as reception data by electromagnetic induction coupling, the reception data is subjected to demodulation processing, and the demodulation data is given to the CPU 47 of the controller 6. The CPU 47 of the controller 6 determines in step S
In step S4, "YES" is determined, and a "teaching start signal" is transmitted by electromagnetic induction coupling (step S4).
5). At this time, as described above, the CPU 47 of the controller 6 generates a signal pattern including data “1” and “0” by controlling on / off of the base current supplied to the NPN transistor 57 and outputs the signal pattern as “teaching”. As a “start signal”.

Next, the "teaching start signal" transmitted from the terminal 7 is transmitted to the unit 8 by electromagnetic induction coupling.
When the received data is demodulated and given to the CPU 65 of the unit 8, the CPU 65 of the unit 8 determines “YES” in step S 23, and , The air pressure in the hollow portion 33d of the door stop portion 33 and the air pressure in the hollow portion 34a of the mounting portion 34 are measured, and the differential pressure is detected as a detection value P (step S24). It is stored as the value P0 (step S25).
That is, the CPU 65 of the unit 8 determines the air pressure in the hollow portion 33d of the door stop portion 33 and the air pressure in the hollow portion 34a of the mounting portion 34 while the vehicle door 3 is moving from the door closing position to the door opening position. Is stored as the reference value P0.

Next, the CPU 47 of the controller 6
It is determined whether a "door closing signal" has been input (step S
6). Here, when the conductor performs an operation of closing the vehicle door 3, the CPU 47 of the controller 6 outputs a “door closing signal”.
Is entered, so that “Y” is entered in step S6.
ES ”and start the timer (step S
7). At this time, the vehicle door 3 moves from the door opening position to the door closing position.

Next, the “wake-up signal” transmitted from the unit 8 is received by the terminal 7 as received data by electromagnetic induction coupling, the received data is demodulated, and the demodulated data is given to the CPU 47 of the controller 6. The CPU 47 of the controller 6 determines in step S
In step S8, "YES" is determined, and a "measurement start signal" is transmitted by electromagnetic induction coupling (step S9). At this time, the CPU 47 of the controller 6 generates a signal pattern including data “1” and “0” different from the above “teaching start signal” by controlling the base current supplied to the NPN transistor 57 on and off. Is transmitted as a “measurement start signal”.

Next, the “measurement start signal” transmitted from the terminal 7 is received by the unit 8 as reception data by electromagnetic induction coupling, and the reception data is demodulated.
When the demodulated data is given to the CPU 65 of the unit 8,
The CPU 65 of the unit 8 determines “YES” in step S26, and determines the air pressure in the hollow portion 33d of the door stop portion 33 of the
And the air pressure in the hollow portion 34a is measured, and the differential pressure is calculated as a detection value P (step S27). That is, the CPU 65 of the unit 8 detects the differential pressure between the air pressure in the hollow portion 33d of the door stop portion 33 and the air pressure in the hollow portion 34a of the mounting portion 34 when the vehicle door 3 is closed, by the detection value P. Detected as

Next, the CPU 65 of the unit 8 reads the resistance value of the variable resistor 72, calculates the read resistance value as a judgment value P1 (step S28), and calculates the difference between the reference value P0 and the detection value P described above. Is compared with the determination value P1 (step S29).

When the door 3 is not in the closed state, the vehicle door 3 is moving, that is, the reference value P0 which is a value before the vehicle door 3 is closed, and the value when the vehicle door 3 is closed. Is smaller than or equal to the determination value P1, the CPU 65 of the unit 8 determines in step S2
9, “NO” is determined, and a “detection off signal” is transmitted by electromagnetic induction coupling (step S30). At this time, the CPU 65 of the unit 8 generates a signal pattern including data “1” and “0” different from the “wakeup signal” by controlling on / off of the base current supplied to the NPN transistor 57. , And transmit it as a “detection off signal”.

Then, the "detection off signal" transmitted from the unit 8 is received by the terminal 7 by electromagnetic induction coupling, the received data is demodulated, and the demodulated data is given to the CPU 47 of the controller 6. The CPU 47 determines “NO” in the step S10, determines “YES” in the step S11,
The output of the "door entrapment detection signal" is turned off, that is, the "door entrapment detection signal" is not output (Step S1).
2).

On the other hand, when the vehicle is in the door-jamming state, the difference between the reference value P0 and the detection value P exceeds the determination value P1, and the CPU 65 of the unit 8 returns “YES” in step S29. Judge and transmit a “detection ON signal” by electromagnetic induction coupling (step S3)
1). At this time, the CPU 65 of the unit 8 controls on / off of the base current supplied to the NPN transistor 57, so that the data “1” and “0” different from the above “wake-up signal” and “detection off signal” are obtained. A signal pattern is generated and transmitted as a “detection ON signal”.

Then, the “detection ON signal” transmitted from the unit 8 is received by the terminal 7 by electromagnetic induction coupling, the received data is demodulated, and the demodulated data is given to the CPU 47 of the controller 6. CPU 47 determines “YES” in step S10.
And turns on the output of the "door entrapment detection signal", that is, outputs the "door entrapment detection signal" to the output circuit 48 (Step S13).

Next, the CPU 47 of the controller 6
It is determined whether or not the timer has expired (step S14).
It is determined “NO” in 14 and the above-described step S1
Return to 0. On the other hand, when the time is up, "YES" is determined in the step S14, the supply of the electric power to the series resonance circuit 55 of the terminal 7 is stopped (step S15), and the process returns to the above-described step S1.

That is, while the power as the power supply voltage is held, the CPU 65 of the unit 8 repeatedly executes the above-described determination processing and transmits the “detection ON signal” or the “detection OFF signal” ( Steps S27 to S3
1) The CPU 47 of the controller 6 monitors whether a “detection on signal” or a “detection off signal” has been received until the timer expires (step S1).
0 to S13), when the timer expires, the monitoring is stopped and the supply of power to the series resonance circuit 55 of the terminal 7 is stopped (step S15).

As described above, according to the present embodiment, power is supplied between the terminal 7 provided on the vehicle body 2 side and the unit 8 provided on the vehicle door 3 by electromagnetic induction coupling. Since it is configured to transmit and receive signals (detection ON signal, detection OFF signal) indicating whether or not the vehicle is in the door-jamming state, the vehicle body 2 and the vehicle door 3 are connected differently from the conventional one. The cable can be eliminated, and the cable is not disconnected. As a result, it is possible to accurately detect whether or not the vehicle is in the door-jamming state, so that the safety of passengers can be reliably ensured, and the reliability can be improved.

At this time, the case 13 of the terminal 7 is composed of an iron main case 14a and a resin cover 14b, and the terminal 7 is placed so that the main case 14a and the inner wall surface 30a of the iron plate 30 of the vehicle body 2 face each other. Because the main case 14a and the inner wall surface 30a of the iron plate 30 have the same magnetic permeability, the inductance does not decrease or the DC resistance does not increase before and after the terminal 7 is mounted. The resonance point does not shift. Thereby, before installing the terminal 7,
It is sufficient to adjust the inductance of the coil 17 so that the resonance point is located at the optimum position. Therefore, there is no need to perform the adjustment work after the mounting, and the working efficiency does not decrease. In addition, when an abnormality occurs for some reason, the terminal 7 can be removed from the vehicle body 2 and the inspection can be performed, so that the inspection can be easily performed.

The same applies to the unit 8. The case 19 of the unit 8 is composed of an iron main case 20b and a resin cover 20c, and the main case 20b and the upper surface 3a of the vehicle door 3 are formed. The main case 20b and the upper surface 3a of the vehicle door 3 have the same magnetic permeability, so that the inductance is reduced before and after the unit 8 is mounted. The DC resistance does not increase and the resonance point does not shift. Thus, it is only necessary to adjust the inductance of the coil 26 so that the resonance point is at the optimum position before the unit 8 is mounted. Therefore, it is not necessary to perform the adjustment work after the mounting, and the work efficiency is reduced. There is no. In addition, when an abnormality occurs for some reason, the unit 8 can be removed from the vehicle door 3 and the inspection can be performed, so that the inspection can be easily performed.

Further, even when the vehicle door 3 is moving,
Power can be supplied, and a signal indicating whether the vehicle is in the door-jam state can be transmitted and received. That is, regardless of whether the vehicle door 3 is moving, the vehicle is in the door-jam state. Since it is possible to detect whether or not the passenger is getting on and off, the safety of passengers can be ensured more reliably, and the reliability can be further improved.

In the terminal 7, the CPU 47 of the controller 6 controls the base current supplied to the NPN transistor 57 on and off, thereby generating a "teaching start signal" and a "measurement start signal" in different signal patterns. Since the configuration is such that the start timing of detection by the pressure sensor 23 is identified using these signal patterns, there is no need to separately provide a configuration for generating a signal for identifying the start timing of detection. The configuration can be simplified.

Further, in the unit 8, the CPU 65
Controls the base current supplied to the NPN transistor 69 on and off, thereby generating a “detection on signal” and a “detection off signal” with different signal patterns from each other. Since it is configured to identify whether or not the door is in the closed state, it is not necessary to separately provide a configuration for generating a signal for identifying whether or not the door is sandwiched, and the configuration can be simplified accordingly. .

The present invention is not limited to the above embodiment, but can be modified or expanded as follows. The main case of the terminal may be made of a material having a magnetic permeability higher than the magnetic permeability of the inner wall surface of the iron plate to which the terminal is to be mounted. It may be made of a material having a higher magnetic permeability than the magnetic permeability.

The detection of whether the door is pinched or not is not limited to detecting the pressure change of the air pressure in the door rubber, but may be detecting the change of the pressing force acting on the door rubber. For example, a device using a tape switch having a mechanical contact, a device using a piezoelectric rubber, a device using a photoelectric device using a light emitting element and a light receiving device, and a device using an ultrasonic device using an ultrasonic sensor may be used. good.

The terminal and the unit are not limited to two-way communication between them, but may be at least one-way communication in which a "detection ON signal" indicating that the terminal is in a door-to-door state is transmitted from the unit to the terminal. Is also good.
The configuration is not limited to the configuration in which the supply of power is stopped when the vehicle door is at the door closing position, but may be a configuration in which power is always supplied.

The positional relationship between the terminal and the unit is
Electromagnetic induction only in a limited range of movement of the vehicle door by adopting a configuration in which the vehicle door faces when the door is in the door closing position and does not face when the vehicle door is in the door opening position. Not only in the configuration for establishing the connection, but also when the vehicle door is in the door-closed position, and also when the vehicle door is in the door-open position, the vehicle door is moved. A configuration in which electromagnetic induction coupling is established in the entire range of the range may be adopted.

The present invention is not limited to the configuration in which the controller and the terminal are separately provided, but may be a configuration in which they are integrally provided. The configuration is not limited to the configuration in which the controller and the terminal are provided in a one-to-one correspondence, but may be one-to-n (n May be provided in a plurality), that is, a configuration for centralized control may be used.

[0082]

As is apparent from the above description, according to the door jam detecting device of the present invention, the first coil provided on the vehicle body and the second coil provided on the vehicle door are separated. By the electromagnetic induction coupling, power is supplied from the vehicle body side to the vehicle door side, and a detection signal is transmitted from the vehicle door side to the vehicle body side. It is possible to eliminate the need for a cable for connecting the vehicle and the vehicle door, and accordingly, the cable is not disconnected. This makes it possible to accurately detect whether or not the vehicle is in the door-jam state, so that the safety of passengers can be reliably ensured, and reliability can be improved.

At this time, at least the first mounting portion side in the first case is made of a material having a magnetic permeability equal to or higher than the magnetic permeability of the material of the first mounting portion, and at least the second mounting portion in the second case is formed. Is made of a material having a magnetic permeability that is equal to or higher than the magnetic permeability of the material of the second mounting portion. Therefore, when the first case and the second case are mounted, the inductance before and after the mounting is reduced. It does not decrease or the DC resistance increases, and the resonance point does not shift. Thus, before the first case and the second case are mounted, the adjustment of the inductance of the coil may be performed so that the resonance point is at the optimum position. Therefore, it is not necessary to perform the adjustment after the mounting. Work efficiency does not decrease. Further, when an abnormality occurs for some reason, the first case and the second case can be removed and the inspection can be performed, so that the inspection can be easily performed.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention.

FIG. 2 is a front view showing a main part of the vehicle.

FIG. 3 is a plan view (a) and a front view (b) of a terminal.

FIG. 4 is an exploded view of the terminal.

FIG. 5 is a plan view (a), front view (b), and side view (c) of the unit.

FIG. 6 is an exploded view of the unit.

FIG. 7 is a plan view (a), a front view (b), and a side view (c) showing a mounting state of a terminal and a unit.

FIG. 8 is a diagram showing a positional relationship between terminals and units.

FIG. 9 is a front view showing a main part of the vehicle door.

FIG. 10 is a sectional view of a door rubber.

FIG. 11 is a flowchart showing processing contents of a CPU on a controller side;

FIG. 12 is a flowchart showing processing contents of a CPU on a unit side;

[Explanation of symbols]

In the drawings, reference numeral 1 denotes a vehicle, 2 denotes a vehicle body, 3 denotes a vehicle door, 3a denotes an upper surface portion (second mounting portion), 4 denotes a doorway, 5 denotes a door pinch detection device, and 13 denotes a case (first case). , 17 is a coil (first coil), 19 is a case (second case), 2
Reference numeral 6 denotes a coil (second coil), 30a denotes an inner wall surface (first mounting portion), 45 denotes a power supply device (power supply unit), 60 denotes a first signal pattern generation unit, and 62 denotes a parallel resonance circuit (power generation unit). Means, 71 are second signal pattern generation means, 7
3 is a detecting means.

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Kazuo Sagae 3-5-3, Akebonocho, Tachikawa-shi, Tokyo Inside Sunks Co., Ltd. (72) Inventor Tsuneishi Tomita 3-53-3, Akebonocho, Tachikawa-shi, Tokyo Inside (72) Inventor Toshinori Imai 3-5-3, Akebonocho, Tachikawa-shi, Tokyo Inside Sunks Co., Ltd. (72) Inventor Hideyuki Kobayashi 3-53-3, Akebonocho, Tachikawa-shi, Tokyo Inside Sunks Co., Ltd. (72) Inventor Atsuro Toda 3-5-3 Akebonocho, Tachikawa-shi, Tokyo F-term in Sankus Corporation (reference) 2E052 AA09 BA02 BA07 EA15 EB01 EC03 GA00 GA02 GA05 GA06 GA07 GA09 GB06 GC01 GC07 GD09 HA01 KA01 KA08 KA10 KA12 KA13 KA17

Claims (3)

[Claims] 1. A power supply means provided on a vehicle body side, a first case mounted on a first mounting portion near an entrance / exit on the vehicle body side; A first coil to which electric power is supplied from a supply means, a second case attached to a second attachment portion on a vehicle door side for opening and closing the entrance of the vehicle body, and a second case accommodated in the second case. A second coil that is electromagnetically inductively coupled between the first coil and a second coil, the second coil being provided on the vehicle door side;
Power generating means for generating power in response to electromagnetic induction coupling between the coil and the coil, and provided on the vehicle door side, and determines whether or not the door is in a pinched state based on the power generated by the power generating means Detecting means for detecting a detection signal indicating the detection result and transmitting the detection signal to the vehicle body by electromagnetic induction coupling between the first coil and the second coil. The side of the first attachment point is formed of a material having a magnetic permeability equal to or higher than the permeability of the material of the first attachment point, and at least the side of the second attachment point in the second case is A door pinch detection device, which is formed of a material having a magnetic permeability equal to or higher than the magnetic permeability of the material of the second attachment portion. 2. The level of electromagnetic induction coupling between the first coil and the second coil is controlled by controlling the level of power supplied to the first coil and provided on the vehicle body side. And a first signal pattern generation means for generating a signal pattern based on the level change of the electromagnetic inductive coupling, wherein the detection means determines a signal pattern generated by the first signal pattern generation means. The door pinch detection device according to claim 1, wherein detection of whether or not the door is pinched is started. 3. The vehicle according to claim 2, wherein the second door is provided on the vehicle door side.
By controlling the level of the power supplied to the coil, the level of the electromagnetic induction coupling between the first coil and the second coil is controlled, and a signal pattern is formed based on the level change of the electromagnetic induction coupling. The apparatus according to claim 1, further comprising a second signal pattern generating unit that generates the detection signal, wherein the detecting unit is configured to generate the detection signal based on the signal pattern generated by the second signal pattern generating unit. Item 3. The pinch detection device according to Item 1 or 2.