JP2003003749A - Door-pinching detector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a door-pinching detector surely detecting the pinching of a passenger and the baggage or the like of the passenger by the door end section of a door panel and a door stop section and being capable of improving safety. SOLUTION: Infrared rays are projected in a pulse shape from a projection section 14 towards the entrance neighboring region 13 of a car 1 capable of opening and closing an entrance 2 by displacing the door panel 5 while infrared rays from the projection section 14 are received by a light receiving section, and the first detection means 11 outputting the first detection signal is installed when light from the projection section 14 to the light receiving section 15 is interrupted. The second detection means 11 outputting the second detection signal when predetermined load works to the door end section 17 of the door panel is mounted. A control means 13 is secured, and a command is output so that the door panel 5 is displaced in the opening direction A1 when at least either one of the first and second detecting signals S1 and S2 is imparted.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention prevents a person or article from being pinched by a door tip portion of a door plate that opens and closes an entrance / exit of a vehicle and a door contact portion that opens when the entrance / exit is closed. Door pinch detection device for.

[0002]

2. Description of the Related Art A typical prior art vehicle door safety device is disclosed in JP-A-51-135008. In this vehicle door safety device, when the door is closed, an abnormality is detected by spreading a monitoring light beam outside the vehicle at a position where it is shielded by an object to be sandwiched. With such a configuration, when the door is closed, the light rays are blocked by the object sandwiched by the door, and it is possible to detect that the object is sandwiched, and it is possible to take safety measures for vehicle operation. .

Further, as a conventional technique, a door pinch detector is
It is disclosed in JP-A-56-146462. This door pinch detection device uses an optical door pinch detection device to repeatedly input a signal to a light emitting element to output an alternating voltage from a light receiving element, and apply the voltage to the primary side of a transformer to output its secondary side output. It is rectified and used as the excitation power source for the detection DC relay, and the relay is excited only when the door is closed and the circuit is normal and there is no ambient light. If any one of the above is abnormal, the relay is activated. I try to demagnetize. With this configuration, the circuit element operates on the safe side even when external light is incident, and the danger that the vehicle is driven with the door open can be avoided.

As another conventional technique, a vehicle door closing detection device is disclosed in Japanese Patent Application Laid-Open No. 60-206768. This vehicle door closing detection device is provided with door closing detectors provided on each of a plurality of doors of a vehicle, and when any one of the doors is opened upon receiving outputs from the door closing detectors. It is provided with a logic circuit that outputs only a signal and a detection relay that outputs a contact signal in response to the output from this logic circuit. As a result, the closed state of all vehicle doors is 1
It can be detected by using one contact, the operation reliability is high, and the size and weight can be reduced.

As another conventional technique, a door closing confirmation device is disclosed in Japanese Patent Laid-Open No. 3-295755. This door closing confirmation device is provided with a pair of light emitting parts and light receiving parts outside the vehicle body near the operation completion points of the upper and lower ends of the side doors, and emits light at the light emitting parts near the time when the side door closing operation is completed. Since the light is received by the light receiving unit, it is confirmed that no foreign matter near the side door is present. With such a configuration, it is possible to easily detect even a foreign matter that is present near the side door, such as clothes, which is thin and difficult to detect by conventional techniques. This can be effective as a measure to prevent passenger accidents and the like.

[0006]

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention
In the conventional technique disclosed in Japanese Patent No. 3508, when an article such as a property of a passenger in a vehicle is sandwiched by a door, the article sandwiched by the door is sandwiched if the article does not significantly project outside from the door. Since the monitoring light beam is not blocked by the article, there is a problem that it cannot be detected that the article is caught in the door. Further, even when the article projects from the door to the outside, if the article is projected while avoiding the area where the monitoring light beam is spread, it is not possible to detect that the article is sandwiched.

Further, JP-A-56-146462, JP-A-60-206768 and JP-A-3-295.
The respective prior arts disclosed in Japanese Patent Laid-Open No. 75-75 also have the same problems as the conventional art disclosed in Japanese Patent Laid-Open No. 51-135008.

Therefore, an object of the present invention is to provide a door pinch detection device capable of reliably detecting that an object to be pinched is pinched by a door plate provided at a doorway and improving safety.

[0009]

SUMMARY OF THE INVENTION The present invention is provided inside a vehicle in which a door is opened by displacing the door plate in the opening direction and is closed by displacing the door plate in the closing direction. It has a light projecting unit that projects light toward a nearby area and a light receiving unit that receives the light emitted from the light projecting unit, and outputs the first detection signal when the light from the light projecting unit to the light receiving unit is blocked. The first detection means, the door tip portion of the door plate, and the door contact portion facing the door tip portion when the doorway is closed are provided in at least one of the first and second detection means when a predetermined load is applied. When at least one of the first and second detection signals is given when the second detection means for outputting a signal and the door plate are displaced in the closing direction, a command for displacing the door plate in the opening direction is output. Control means to Preparative a Tohasami detecting apparatus according to claim.

According to the invention, the first detecting means projects the light from the light projecting portion to the area near the entrance and exit, and the light receiving portion receives the light from the light projecting portion which has passed through the area near the entrance and exit. The first detection signal is output when there is an object that blocks light from the light projecting section to the light receiving section in the vicinity area. By providing such a first detection means, it is possible to detect the presence of a person such as a passenger or the presence of an article such as a passenger's belongings in the area near the doorway, and output the first detection signal. it can. Further, the second detecting means is provided on at least one of the door tip portion and the door contact portion of the door plate, and outputs the second detection signal when a predetermined load is applied, so that the door tip portion and the door contact portion are provided. If a load acts on at least one of the door tip portion and the door contact portion where the second detection means is provided by sandwiching a person or an article between and, the second detection is performed. A signal can be output. The control means outputs a command for displacing the door plate in the closing direction, and opens at least one of the first and second detection signals when the door plate is displacing in the closing direction. Outputs a command to displace in the direction.

As described above, the first detecting means detects the presence of a person or an article which may be sandwiched between the door tip portion and the door contact portion in the area near the doorway, and based on this, the control means causes the door plate to operate. Since the command is output to move the door in the opening direction, the door plate can be moved in the opening direction before a person or an article is caught. In addition, the second detection means is provided, and when a person or an article that cannot be detected by the first detection means is caught between the door tip portion and the door contact portion, It is possible to reliably detect that a person or an article is pinched based on the load acting on the door-stop portion. As described above, when the person or the article is caught between the door tip portion and the door contact portion, the second detecting means surely detects that the person or the article is caught, The door can be opened in the opening direction by displacing the door in the opening direction, and the door can be opened in the opening direction when a person or article is present in the area near the doorway that is likely to be sandwiched between the door tip and the door stop in the vehicle. Since it can be displaced, the person or the article can be prevented from being caught between the door tip portion and the door contact portion, and the safety can be improved.

The present invention according to claim 2 is characterized in that the second detecting means is provided at least over the entire region between both end portions in the vertical direction of the door end portion.

According to the present invention, since the second detecting means is provided at least over the entire area between the upper and lower end portions of the door tip portion, when the door plate is displaced in the closing direction, the vertical direction of the door tip portion is increased. It is possible to detect that a predetermined load is applied to a part of the entire area between both ends. This causes the door plate displaced in the closing direction to come into contact with a person or article,
The door plate can be displaced in the opening direction when a predetermined load is applied. Therefore, since the door plate can be displaced in the opening direction before a person or an article is caught, the safety can be further improved. The second
Since the detection means is provided in the entire area between the both ends of the door tip in the vertical direction, it is possible to reliably detect whether a person or an article comes into contact with any position between the both ends of the door tip in the vertical direction. .

The present invention according to claim 3 is characterized in that the light projecting section projects infrared rays in a pulse form.

According to the present invention, since the light projected from the light projecting portion is infrared and has a pulse shape, ambient light such as sunlight is incident on the light receiving portion, and a person or an article is in the vicinity of the entrance / exit. Despite the existence, it is possible to prevent erroneous detection if a person or an article does not exist, and it is possible to surely detect.

[0016]

1 is a block diagram showing a door pinching detection device 1 according to an embodiment of the present invention, and FIG. 2 is a simplified perspective view showing a doorway 2 as seen from inside a vehicle 3. 3 is a diagram showing a train 4 in which a plurality of vehicles 3 are connected,
FIG. 4 is a sectional view taken along the section line IV-IV in FIG. 3, (1) is a side view schematically showing the train 4, and (2) is a horizontal sectional view schematically showing the train 4. A plurality of cars, in the present embodiment, three cars are connected to each other to form a train 4, and each train 3 has a vehicle width direction (vertical direction in FIG. 3) perpendicular to the longitudinal axis direction of the car (horizontal direction in FIG. 3). ) By displacing the door plate 5 on both sides,
One opening / closing door 40 for opening and closing is provided.
Each of the opening / closing doors 40 has a doorway 2 by the displacement of one door plate 5.
Is configured to open and close. The upper end of each door plate 5 is guided in the front-rear axial direction by the kamoi portion 6 of the vehicle 3,
The lower end is guided in the front-rear axial direction by the threshold portion 7,
The vehicle can be displaced in the opening direction A1 and the opposite closing direction A2 along the front-rear axis direction of the vehicle. Doorway 2 is a doorboard 5
Is opened by displacing it in the opening direction A1, and is closed by displacing the door plate 5 in the closing direction A2. The door pinch detection device 1 is provided in association with such an opening / closing door 40.

The door pinch detection device 1 includes a first detection means 10
And a second detection means 11 and a control means 12. First
The detection unit 10 projects the light toward an entrance / exit vicinity area 13 that is an area near the entrance / exit 2 inside each vehicle 3.
4 and a light receiving portion 15 for receiving the light emitted from the light emitting portion 14.
And outputs the first detection signal S1 when the light from the light projecting unit 14 to the light receiving unit 15 is blocked. Second detection means 11
Is provided on at least one of the door stop portions 18 facing the door end portion 17 when the door end portion 17 of the door plate 5 and the doorway 2 are closed, in the present embodiment, the door tip portion 17.
The second detection signal S2 is output when a predetermined load is applied. When the control means 12 is given to at least one of the first and second detection signals S1 and S2 while the door plate 5 is displaced in the closing direction A2, the control means 12 commands to displace the door plate 5 in the opening direction A1. Drive signal Sd representing

The first detecting means 10 has a light emitting diode element which emits infrared rays by the light projecting section 14, and can emit infrared rays in a pulse form toward the area 13 near the entrance / exit. The light projecting unit 14 is provided in the kamoi portion 6 near the downstream end of the entrance 2 in the opening direction A1 and projects infrared rays in a downward pulse toward the entrance vicinity region 13.

The light receiving section 15 of the first detecting means 10 has a phototransistor element and can receive the pulsed infrared rays projected from the light projecting section 14 and convert them into an electric signal. The light receiving unit 15 is provided in the closing direction A2 of the doorway 2.
A floor surface 19 which is provided in the Kamoi portion 6 near the downstream end and faces the passage 18 in the vehicle 3 communicating with the outside by the doorway 2
Infrared rays from the light projecting portion 14 reflected by can be received.

The light projecting section 14 and the light receiving section 15 are the same as the light projecting section 1.
The path of the infrared rays projected from 4 and received by the light receiving unit 15 is provided so that the distance L1 is several cm to several tens cm at the position farthest from the entrance / exit 2. In the first detection unit 10 as described above, a person or an article such as the passenger 20 or a property of the passenger 20 is present in the area 13 near the entrance / exit, and the infrared light projected from the light projecting unit 14 is blocked to be received by the light receiving unit 15. When it becomes impossible to do so, the first detection signal S1 is output.

FIG. 5 is a perspective view showing a part of the second detecting means 11, FIG. 6 is a sectional view taken along the section line VI-VI of FIG. 5, and FIG. 7 shows the second detecting means 11. It is a perspective view showing a part of holder 21 to hold. The second detection means 11 is
It is realized by a band-shaped switching element called a tape switch. The second detection means 11 includes a pair of electrodes 23, 2 provided at a slight distance L2 from each other in the thickness direction.
4 and each electrode 23, 24 is provided over the entire area of the second detection means 11 in the longitudinal direction. Each electrode 2
3, 24 are commonly covered by a cover body 25 made of an electrically insulating material having flexibility and elasticity, for example, synthetic rubber or synthetic resin, and a space is formed between the electrodes 23, 24. Is held. Cover body 20
Has a ridge portion 26 that projects at the center in the width direction on one side in the thickness direction and extends over the entire region in the longitudinal direction.

In the second detecting means 11 as described above, each electrode 23 is subjected to a predetermined load from both sides in the thickness direction in any region in the longitudinal direction, for example, a load of several hundred g per cm in the longitudinal direction. , 24 are configured to contact each other. Conductive lines 27 and 28 are individually electrically connected to the electrodes 23 and 24 of the second detection means 11, and a voltage is applied between the electrodes 23 and 24. As a result, when the above-mentioned load acts on the second detection means 11, the electrodes 23 and 24 come into contact with each other and the electric circuit is closed to output the second detection signal. Since the electrodes 23 and 24 are provided over the entire area of the second detection means 11 in the longitudinal direction, the second detection means 1
When the above-mentioned load acts on at least a partial region of the longitudinal direction of 1, the circuit is closed by the load and the second detection signal S2 can be output.

The holder 21 is made of, for example, an aluminum alloy and has a substantially C-shaped cross section. The holder 21 faces the holding space, and is formed in concave grooves 29 formed at both ends in the width direction and forming a part of the holding space. The second detecting means 11 can be held in a state where both widthwise ends of the second detecting means 11 are fitted in each other. In the second detection means 11, the protruding portion 26 has the holder 21.
It is held so as to project outward from. The holder 21 is
The holding space is fixed so as to be opened so that the holding space faces the door-contact portion over the entire area between both end portions in the vertical direction of the door-end portion 17 of the door plate 5. The second detection means 11 is held by such a holder 21, and is provided over the entire area between the both ends of the door tip portion 17 in the vertical direction in a state where the protrusion 26 is projected toward the door contact portion. .

The second detecting means 11 as described above is provided with a door end portion 17
When the load is applied to the door end portion 17 due to the fact that an article such as a person such as the passenger 20 or his belongings is sandwiched between the door end portion 17 and the door stop portion 18, the load is applied to the door end portion 17. Can be detected. Further, the door stop portion 18 is formed with a recess into which the ridge 26 of the second detection means 11 is fitted when the door plate 5 is in the state where the doorway 2 is closed, and the door tip portion 17 and the door contact portion are formed. The load is not applied to the second detection means 11 when the doorway 2 is closed in a state where an article such as a person such as a passenger 20 or his belongings is not sandwiched between the portion 18 and the portion 18. Therefore, the second detection signal S2 is output only when the person or the article comes into contact with the door end portion 17 or the person or the article is sandwiched.

The above-mentioned first and second detecting means 10, 11
Is provided for each opening / closing door 40 of each vehicle 3. On the other hand, the control means 12 controls the train 4 to 1
The first detection signal S1 from each first detection means 10 and the second detection signal S2 from each second detection means 11, which are provided for each opening / closing door 40, are assigned to the train 4.
Is provided to the control means 12 provided.

Each vehicle 3 is provided with a drive means 31 for driving the door plate 5 on each opening / closing door 40. Further, the train 4 has a crew member room formed in at least one of the vehicles 3, and an operation for a crew member to command the opening / closing operation of the door panel 5 of each opening / closing door 40 in this crew member room. Means 32 are provided. The driving means 31 is realized by, for example, an air cylinder, an electric motor, or the like, and displaces and drives the door plate 5 in the opening direction A1 and the closing direction A2 in response to the driving signal Sd from the control means 12. Operating means 30
Is operated by a crew member, and an opening command signal S10 for instructing the door plates 5 of the opening / closing doors 40 provided on one side of the train 4 among the opening / closing doors of the vehicles 3 to operate in the opening direction A1 all at once. A closing command signal S11 that gives a command to displace the door plate 5 in the closing direction A2 can be output. When the train arrives at the station and stops, the crew operates the operation means 32 to give the opening command signal S10 to the control means 12, and when the passenger 20 has finished getting in and out, operates the operation means 32 to control the closing command signal S11. It can be provided to the means 12. These open command signal S10 and close command signal S
11 is provided to the control means 12. The control means 12
When the opening command signal S10 is given, the door plate 5 is opened in the opening direction A1.
The drive signal Sd representing the command to drive the drive means 31 is given to the drive means 31, and when the close command signal S11 is given, the drive signal Sd giving the command to drive the door 5 in the closing direction A2 is given to the drive means 31.

Further, the vehicle 3 is provided with a speed detecting means 33 for detecting the traveling speed when the train has started after the closing operation is completed, and the speed detecting means 33 is a speed for predetermining the traveling speed of the vehicle. When the above is reached, the security command signal S13 representing the security command is given to the control means 12. Further, the speed detection means 33 gives the control means 12 a cancellation command signal S13 for canceling the safety command when the speed becomes lower than a predetermined speed when the vehicle 3 travels. Control means 12
When the safety command is given from the speed detecting means 33, the driving signal Sd is set so as to displace the door plate 5 in the opening direction even if the crew operates the operating means 34 to give the opening command signal S10. It is configured not to give. Further, even if either of the first and second detection signals S1 and S2 is given, even if the crew member operates the operating means 32 to open the door panel 5 or the like, the speed of the vehicle 3 is lower than the predetermined speed. When the vehicle is traveling at a high speed, the doorway 2 is controlled so as not to be opened, and the safety of passengers in the vehicle 3 can be reliably ensured.

FIG. 8 is an example of a flowchart showing the control operation when the control means 12 is in the closing operation. Train 4 stopped at the station
When the driver operates the operating means 30 in step a1 to give a closing command signal S11 to start the control, the operating staff 32 operates the operating means 32 to open the command signal S10 in step a2. Is determined. In the judgment of this step a2,
When it is determined that the opening command signal S10 is not given, the process proceeds to step a3, and it is determined whether the door plate 5 has moved to the position where the doorway 2 is completely closed to complete the closing operation. When it is determined in step a3 that the closing operation has not been completed, the process proceeds to step a4, and it is determined whether or not the second detection means 11 has given the second detection signal.

If it is determined in step a4 that the second detection signal S2 is given from the second detection means 11, the process proceeds to step a5, and the first detection signal S1 is given by the first detection means 10. It is determined whether or not. When it is determined in step a5 that the second detection signal is not given, the process proceeds to step a6, and the drive signal Sd for instructing the driving means 31 to close the door plate 5 in the closing direction A2 is given. , Start or continue the closing operation. When the drive signal Sd for instructing the closing operation is given to the driving means 31 in step a6, the process proceeds to step a2.

At step a2, the crew member operates the operating means 3
When it is determined that the open command signal S10 has been given by operating 4, the operation proceeds to step a8, and the drive signal Sd that commands the open operation based on the open command, that is, the door plate 5 is driven in the open direction A1 is driven. It is given to the means 31 and the control of the closing operation is ended. When it is determined in step a3 that the closing operation is completed, the process proceeds to step a9,
The control returns to the state of waiting for the opening command based on the operation of the operation member 32 by the crew member, and the control of the closing operation ends. Also step a
4, the second detection signal S by the second detection means 11
If it is determined that 2 is given, the process proceeds to step a7, where the drive signal S1 is given to the drive means 31 so as to invert the door plate 5, that is, to displace in the opening direction A1.
Move to 2. Further, when it is determined in step a5 that the first detection signal S1 is given by the first detection means, the process proceeds to step a7, and after the inversion operation,
Go to step a2.

According to the door pinch detection device 1 as described above, the first detection means 10 extends from the light projecting portion 14 to the area 13 near the entrance / exit.
The light projecting section 1 which has projected onto the
The light receiving section receives the light from 4, and in the area near the entrance and exit,
When there is one that blocks the light from the light projecting unit 14 to the light receiving unit 15, the first detection signal S1 is output. By providing the first detection means 10 as described above, it is possible to detect the presence of the passenger 20 or the presence of an article such as the passenger's belongings in the area 13 near the doorway, and output the first detection signal S1. . Further, the second detection means 11 outputs the second detection signal S2 when a predetermined load is applied to at least one of the door tip portion 17 and the door contact portion 18 of the door plate 5, and therefore the door tip portion. A person such as a passenger 20 or an article is sandwiched between the door 17 and the door stop 18, and a load acts on at least one of the door tip 17 and the door stop 18 in which the second detecting means 11 is provided. Can be detected and the second detection signal S2 can be output. Control means 12
The first and second detection signals S1 and S2 are generated when the operating means 2 is operated by a crew member and the door plate 5 is displaced in the closing direction A2 based on a closing command for displacing the door plate 5 in the closing direction A2. When at least one of them is given, the drive signal Sd representing a command to displace the door plate 5 in the opening direction A1 is output.

As described above, the first detecting means 10 detects the presence of the passenger 20 or the article which may be sandwiched between the door tip portion 17 and the door stop portion 18 in the doorway vicinity area 13, and based on this, Since the control means 12 outputs a command to displace the door plate 5 in the opening direction A1, the door plate 5 is closed in the closing direction A2 before the passenger 20 or the article is caught.
The safety can be improved by displacing to. in addition,
If the second detecting means 11 is provided and a person or an article that cannot be detected by the first detecting means 10 is caught between the door end portion 17 and the door contact portion 18, the door end portion It is detected that a person or an article is caught on the basis of the load acting on the door stop portion 17 and the door stop portion 18, and the door end portion 1
It can be reliably detected that a passenger or an article is sandwiched between the door 7 and the door stop portion 18.

As described above, the second detecting means 11 surely detects that a passenger or the like who rushes into the vehicle is caught between the door tip portion and the door contact portion, and the door plate is opened in the opening direction. The doorway 5 can be displaced to open the doorway, and when the doorboard 5 is located in the doorway vicinity area 13, the doorboard 5 can be displaced in the opening direction A1, so that the passenger 20 and the article can move between the door tip portion 17 and the door stop portion 18. It can be prevented from being sandwiched between them and safety can be improved.

Further, since the second detecting means 11 is provided over the entire area between the both ends of the door tip portion 17 in the vertical direction, it is predetermined in the door tip portion 17 when the door plate 5 is displaced in the closing direction A2. It is possible to detect that a load acts. Due to this, the door plate 5 displaced in the closing direction A2,
The door plate 5 can be displaced in the opening direction A1 when it comes into contact with the passenger 20 or the article and a predetermined load is applied. Therefore, since the door plate 5 can be displaced in the opening direction A1 before the passenger 20 or the article is caught, the safety can be further improved. Further, since the second detecting means 11 is provided in the entire area between the both ends in the vertical direction of the door end portion 17, even if the passenger 20 or the article comes into contact with at least a part of the area between the both end portions in the vertical direction of the door end portion 17. , Can be reliably detected.

Further, since the light projected from the light projecting section 14 is infrared ray and has a pulse shape, ambient light such as sunlight enters the light receiving section 15 and the passenger 20 or the article exists in the area 13 near the entrance / exit. Nevertheless, it is possible to prevent erroneous detection when there is no passenger or article, and it is possible to reliably detect.

Further, the first detecting means 10 is provided with the light projecting portion 14 and the light receiving portion 15 on the inner side of the vehicle inside the doorway 2, so that the crew member operating the operating means 32 is in the crew room provided in the vehicle 3. Even if it is difficult to identify the passengers 20 in the vehicle 3, the passengers 20 can easily detect the passengers 20 in the area 13 near the doorway.
If there is a risk of being caught between the door tip portion 17 and the door stop portion 18, the door board 5 is opened in the opening direction A1 with priority over the closing command based on the operation of the operating means 32 by the crew member.
Therefore, the safety of the passenger 20, etc., which is difficult to confirm from the crew member who operates the operation means 32, can be further improved. Further, the second detection means 11 can output the second detection signal S2 by applying a small load of 230 g per 1 cm as described above, so that the doorboard can be exposed before a large impact and load are applied to the passenger 20. 5 can be displaced in the opening direction and the passenger 20
The safety of can be further improved. Further, since the second detection means 11 uses a switching element having a pair of strip-shaped electrodes 23 and 24, it has a simple structure,
It is possible to detect that a load is applied to a part of the entire area between the both ends of the door tip portion 17 of the door plate 5 in the vertical direction. Therefore, the second detection means 11 having a simple structure is
By providing only one, the door tip portion 17 detects that a load of a partial area of the entire area between the both end portions in the vertical direction is applied, and the load is provided between the door tip portion 17 and the door stop portion 18. It can be detected that the passenger 20 is caught or the door end portion 17 collides with the passenger 20 or the like.

The above-described embodiments are merely examples of the present invention, and the configurations can be changed within the scope of the present invention. For example, the door pinch detection device 1 is provided in association with the opening / closing door 40 that opens and closes one doorway 2 by displacing one doorboard 5, but one doorway is opposite to two doorboards 5. It may be provided in association with an opening / closing door of a so-called double door structure that opens and closes by being displaced in the direction. In such a case, a portion of one door plate facing the other door plate is a door tip portion, and a portion of the other door plate facing one door plate corresponds to a door stop portion. Further, although the second detecting means 11 is provided at the door tip portion 17 of the door plate 5, the second detecting means may be provided at the door contact portion 18 which is a part of the vehicle 3 and does not displace. . In such a configuration, since it is not necessary to displace the second detection means 11, there are few failures. Further, the second detection means 11 includes a door end portion 17 and a door contact portion 18
May be provided in both. By this, the second
It is possible to achieve both the effect of providing the detecting means at the door end portion 17 and the effect of providing the detecting means at the door contact portion 18, and a load acts on either the door tip portion 17 or the door contact portion 18. Since it is possible to detect that the passenger 20 or the like is caught, it is possible to further improve safety. When the light from the light projecting unit 14 to the light receiving unit 15 is blocked,
In the vicinity of the entrance / exit vicinity area 13 in which there is a light blocking unit, a warning is given by voice or the like to prompt that the blocking of this light be blocked, thereby improving the convenience. May be.

[0038]

As described above, according to the present invention as set forth in claim 1, the first detecting means emits light from the light projecting portion to the area near the entrance and exit, and the first detecting means emits light from the light projecting portion which has passed through the area near the entrance and exit. When the light receiving unit receives the light and there is a light blocking unit that blocks the light from the light projecting unit to the light receiving unit, the first detection signal is output. By providing such a first detection means, it is possible to detect the presence of a person such as a passenger or the presence of an article such as a passenger's belongings in the area near the doorway, and output the first detection signal. it can. The second
The detection means is provided on at least one of the door tip portion and the door contact portion of the door plate, and outputs the second detection signal when a predetermined load is applied. Therefore, the detection means is provided between the door tip portion and the door contact portion. When a person or an article is sandwiched between and a load acts on at least one of the door tip portion and the door contact portion where the second detecting means is provided, it is detected that this load is acting,
The second detection signal can be output. The control means outputs a command for displacing the door plate in the closing direction, and opens at least one of the first and second detection signals when the door plate is displacing in the closing direction. Outputs a command to displace in the direction.

As described above, the first detecting means detects the presence of a person or an article which may be sandwiched between the door tip portion and the door contact portion in the area near the entrance and exit, and based on this, the control means causes the door plate to move. Since the command is output to move the door in the opening direction, the door plate can be moved in the opening direction before a person or an article is caught. In addition, the second detection means is provided, and when a person or an article that cannot be detected by the first detection means is caught between the door tip portion and the door contact portion, It is possible to reliably detect that a person or an article is pinched based on the load acting on the door-stop portion. As described above, when the person or the article is caught between the door tip portion and the door contact portion, the second detecting means surely detects that the person or the article is caught, The door can be opened in the opening direction by displacing the door in the opening direction, and the door can be opened in the opening direction when a person or article is present in the area near the doorway that is likely to be sandwiched between the door tip and the door stop in the vehicle. Since it can be displaced, the person or the article can be prevented from being caught between the door tip portion and the door contact portion, and the safety can be improved.

According to the second aspect of the present invention, since the second detecting means is provided over at least the entire area between the both ends of the door tip portion in the vertical direction, the door when the door plate is displaced in the closing direction. It is possible to detect that a predetermined load is applied to a part of the entire area between the both ends in the vertical direction of the tip.
As a result, when the door plate displaced in the closing direction comes into contact with a person or an article and a predetermined load is applied, the door plate can be displaced in the opening direction. Therefore, since the door plate can be displaced in the opening direction before a person or an article is caught, the safety can be further improved. Further, since the second detection means is provided in the entire region between the both ends of the door tip in the vertical direction, the second detection means reliably detects whether a person or an article comes into contact with any position between the both ends of the door tip in the vertical direction. be able to.

According to the third aspect of the present invention, since the light projected from the light projecting portion is infrared ray and has a pulse shape, ambient light such as sunlight enters the light receiving portion and the area near the entrance / exit. It is possible to prevent erroneous detection when a person or an article does not exist, even though a person or an article exists, and to reliably detect the person or the article.

[Brief description of drawings]

FIG. 1 is a block diagram showing a door pinch detection device 1 according to an embodiment of the present invention.

FIG. 2 is a perspective view showing the doorway 2 as seen from inside the vehicle 3.

FIG. 3 is a diagram showing a train 4 in which vehicles are connected.

FIG. 4 is a sectional view taken along the section line IV-IV in FIG.

5 is a perspective view showing a part of second detection means 11. FIG.

6 is a cross-sectional view taken along the section line VI-VI in FIG.

FIG. 7 is a holder 28 for holding the second detecting means 11.
It is a perspective view showing a part of.

FIG. 8 is a flowchart showing a control operation at the time of closing operation of the control means 12.

[Explanation of symbols]

1 Door-to-door detection device 2 doorway 3 vehicles 4 trains 5 door plates 10 First detection means 11 Second detection means 12 Control means 13 Area near the doorway 14 Projector 15 Light receiving part 23, 24 electrodes A1 opening direction A2 closing direction S1 first detection signal S2 Second detection signal Sd drive signal

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Claims (3)

[Claims] 1. A door is provided by displacing the door in the opening direction and opened, and is provided inside a vehicle provided with an entrance / exit that is closed by displacing the door in the closing direction, and emits light toward an area near the entrance / exit of the vehicle. A light emitting unit, a light receiving unit for receiving the light emitted from the light emitting unit, and a first detection means for outputting a first detection signal when the light from the light emitting unit to the light receiving unit is blocked; Detection means provided on at least one of the door tip portion and the door contact portion facing each other when the doorway is closed and outputting a second detection signal when a predetermined load is applied. And when at least one of the first and second detection signals is given when the door plate is displaced in the closing direction,
A door pinch detection device comprising: a control unit that outputs a command to displace the door plate in the opening direction. 2. The door pinch detection device according to claim 1, wherein the second detection means is provided at least over the entire area between both end portions in the vertical direction of the door end portion. 3. The door pinch detection device according to claim 1, wherein the light projecting unit projects infrared rays in a pulse shape.