JP6864857B2 - Pinching detection sensor - Google Patents

Description

The present invention relates to a pinch detection sensor that detects pinch when the sliding door is closed.

Conventionally, a sliding door that slides in the front-rear direction of the railway vehicle is provided at the entrance / exit of the railway vehicle on which passengers get on and off. Such a sliding door of a railway vehicle is provided with a structure for detecting that a passenger's body or personal belongings are pinched during the closing operation (see, for example, Patent Document 1).

The door pinch detection device described in Patent Document 1 is detachably housed in a hollow door end rubber outer member attached to the edge of the sliding door of a railroad vehicle in the closing direction and a hollow portion of the door tip rubber outer member. It has a door-end rubber inner member and a piezoelectric material as a foreign matter detection sensor fixed to the tip of the door-end rubber inner member. When a foreign substance is caught, the piezoelectric material converts the deformation of the rubber inner member of the door into an electric signal and outputs it, and this electric signal is amplified and sent to the alarm, and the alarm issues an alarm. Then, in response to this alarm, the crew operates to open the sliding door to eliminate the pinched state.

On the other hand, the applicant has proposed, for example, a code switch described in Patent Document 2 for detecting pinching by a sliding door of an automobile. This cord switch has a cord switch body in which a plurality of conductor wires are spirally arranged inside a tubular member so as to be separated from each other, and a cord switch having a modulus of elasticity higher than that of the tubular member of the cord switch body. A strip-shaped shock absorbing member that is interposed between the cord switch body and the mounted member and has an elastic modulus lower than the elastic modulus of the tubular member of the cord switch body is provided along the switch body. Have. This cord switch can detect pressure from any direction in the radial direction of the tubular member.

JP-A-2017-89247 Japanese Unexamined Patent Publication No. 2014-216300

The door pinch detecting device described in Patent Document 1 can accurately detect pinching when the piezoelectric material receives pressure along the moving direction of the sliding door during the closing operation, but the moving direction during the closing operation. When an external force is applied from an inclined direction, or when the sandwiched foreign matter is a thin string, the piezoelectric material may not always react reliably. For this reason, when a passenger carries a carry-on item in which a main body member such as a pass case for accommodating cards is connected to the tip of the string-shaped member and gets off the railroad vehicle, the string-shaped member is sandwiched between the slide doors. Then, even if the passenger pulls the string-shaped member from the outside of the passenger compartment, the alarm is not issued, and the railway vehicle may depart with the string-shaped member sandwiched.

The present inventors accommodate a plurality of cord switch main bodies of the cord switch described in Patent Document 2 in a hollow portion of a rubber door so that pinching can be detected even when such a mode of pinching occurs. I thought about it. However, in this case, if the volume of the cavity is made larger than the size required to accommodate the plurality of cord switch bodies and an appropriate hollow space is not secured, the cushioning property will be deteriorated and the passenger's body will be deteriorated. When the pinch occurs, it gives a big impact to the passengers. Further, if the cavity portion is made too large, the position of each cord switch main body in the cavity portion cannot be determined, and it may not be possible to reliably detect pinching in various modes.

Therefore, an object of the present invention is to provide a pinch detection sensor capable of detecting pinch even when an external force acts from a direction inclined with respect to the moving direction of the slide door when the slide door is closed. And.

The present invention is a pinch detection sensor that detects pinching when the slide door is closed, for the purpose of solving the above problems, and has a hollow portion inside, and the tip portion of the slide door in the closing movement direction. The door end is provided with a door tip rubber attached to the door and a plurality of linear pressure-sensitive members housed in the cavity and having a plurality of conductor wires arranged inside a tubular elastic body so as to be separated from each other. The rubber has a plurality of accommodating spaces for accommodating the plurality of linear pressure-sensitive members in the cavity, and the linear pressure-sensitive members accommodated in the accommodating space can be moved in the accommodating space. Provided is a pinch detection sensor in which the movement of the linear pressure-sensitive member between the plurality of accommodating spaces is regulated by a partition portion, and the plurality of accommodating spaces are partitioned without a gap by the partition portion. To do.

According to the pinch detection sensor according to the present invention, pinch can be detected even when an external force acts from a direction inclined with respect to the moving direction of the slide door when the slide door is closed.

It is explanatory drawing which shows the vicinity of the entrance / exit of the railroad vehicle which the pinch detection sensor which concerns on 1st Embodiment of this invention is attached to the left and right slide doors respectively. It is sectional drawing which shows the pinch detection sensor. (A) is a perspective view which shows a linear pressure sensitive member. (B) is a cross-sectional view of a linear pressure sensitive member in a natural state in which no external force is applied. (C) is a cross-sectional view of a linear pressure sensitive member in a pressurized state to which an external force is applied. It is a circuit diagram which shows an example of the electric circuit for detecting pinching by a sliding door by a linear pressure sensitive member. It is explanatory drawing which shows the state which the tip part in the closing direction of the cover part of a door end rubber collided with a part of a passenger's body. Explanatory drawing showing the state when a railroad vehicle starts running with the string-shaped member of the passenger's belongings getting off the outside of the passenger compartment sandwiched between the left and right sliding doors and the main body member left behind on the passenger compartment side. Is. It is sectional drawing which shows the pinch detection sensor which concerns on 2nd Embodiment. It is sectional drawing which shows the pinch detection sensor which concerns on 3rd Embodiment. It is sectional drawing which shows the pinch detection sensor which concerns on 4th Embodiment. It is sectional drawing which shows the pinch detection sensor which concerns on 5th Embodiment. It is sectional drawing which shows the pinch detection sensor which concerns on 6th Embodiment. It is sectional drawing which shows the pinch detection sensor which concerns on 7th Embodiment. It is sectional drawing which shows the pinch detection sensor which concerns on 8th Embodiment. It is sectional drawing which shows the pinch detection sensor which concerns on 9th Embodiment.

[First Embodiment]
FIG. 1 is an explanatory view showing the vicinity of the entrance / exit 10 of a railroad vehicle 1 in which the pinch detection sensor 2 according to the first embodiment of the present invention is attached to the left and right slide doors 11 and 11, respectively. FIG. 1 shows a passenger 8 getting off from a railroad vehicle 1 to a platform 7 of a station, and a carry-on item 9 of the passenger 8. Further, in FIG. 1, the boarding / alighting direction of the passenger 8 is indicated by the arrow A ₁ , and the moving direction (closing direction) of the slide doors 11 and 11 during the closing operation is indicated by the arrow A ₂ .

The moving directions of the sliding doors 11 and 11 are parallel to the traveling direction of the railway vehicle 1. The boarding / alighting direction is perpendicular to the traveling direction of the railway vehicle 1 and parallel to the thickness direction of the sliding doors 11 and 11. Each sliding door 11 has a door plate 111 and a window glass 112 fitted in the window portion 111a of the door plate 111.

The carry-on item 9 has, for example, a main body member 91 such as a pass case for accommodating cards, and a string-shaped member 92 whose one end is connected to the main body member 91. The other end of the string-like member 92 is gripped by the passenger 8. The other end of the string-shaped member 92 may be hung on, for example, the belt of the passenger 8.

The slide doors 11 and 11 are slid in the front-rear direction of the vehicle body 12 by the drive devices 13 and 13 provided on the vehicle body 12 to open and close the entrance / exit 10. The drive devices 13 and 13 are arranged above the entrance / exit 10, and are configured to have a linear motion mechanism such as a linear motor or a ball screw. Further, the drive devices 13 and 13 are controlled by the control device 14. The moving range (positions of the forward end and the backward end) of the slide doors 11 and 11 is defined by the stoppers (not shown) provided on the drive devices 13 and 13.

The pinch detection sensor 2 is attached to each end of the left and right slide doors 11 and 11 facing each other in the vertical direction, and the passenger 8 or its carrying item 9 is pinched when the slide doors 11 and 11 are closed. When it is caught, it detects pinching. When the control device 14 receives a signal indicating that the pinch has occurred from the pinch detection sensor 2, the control device 14 controls the drive devices 13 and 13 to open the slide doors 11 and 11. When the control device 14 receives a signal indicating that pinching has occurred from the pinching detection sensor 2, the control device 14 may issue an alarm signal for issuing an alarm to an occupant such as a driver or a conductor. In this case, the sliding doors 11 and 11 are opened by the operation of the occupant.

FIG. 2 is a cross-sectional view showing a pinch detection sensor 2 in a natural state in which pinching does not occur. In FIG. 2, the pinch detection sensor 2 is _{shown in a cross section parallel to the boarding / alighting direction A 1} and the closing direction A ₂ (longitudinal orthogonal cross section). Further, in FIG. 2, it is assumed that the upper side of the drawing corresponds to the outside of the passenger compartment (platform 7 side) of the railway vehicle 1 and the lower side of the drawing corresponds to the passenger compartment side.

The pinch detection sensor 2 has a door end rubber 3 attached to the tip end portion of the slide door 11 in the closing direction, and a plurality of linear pressure-sensitive members 4. The door end rubber 3 has a hollow portion 30 inside, and a plurality of linear pressure-sensitive members 4 are housed in the hollow portion 30. In the present embodiment, three linear pressure sensitive members 4 are housed in the cavity 30.

The door plate 111 is formed with a fitting groove 111b for attaching the door tip rubber 3 along the vertical direction. The fitting groove 111b is opened in the closing direction through the opening 111d between the pair of projecting pieces 111c and 111c facing each other.

The door tip rubber 3 has a rectangular base portion 31 in the cross section shown in FIG. 2, a cover portion 32 that covers three linear pressure-sensitive members 4 on the closing direction side of the cavity portion 30, and a fitting groove of the door plate 111. The fitting portion 33 fitted to the 111b and the connecting portion 34 connecting the base portion 31 and the fitting portion 33 are integrally provided. The door end rubber 3 is made of, for example, urethane rubber, EP rubber, silicone rubber, styrene butandien rubber, chloroprene rubber, olefin-based or styrene-based thermoplastic elastomer, urethane resin, or the like, and is formed by extrusion molding.

The base portion 31 is arranged on the closing direction side of the pair of projecting pieces 111c and 111c of the door plate 111, and forms a cavity portion 30 with the cover portion 32. The cover portion 32 is curved in an arch shape (semicircular shape) protruding in the closing direction at the central portion in the boarding / alighting direction, and both end portions are continuous with the base portion 31. The connecting portion 34 is arranged in the opening 111d of the door plate 111.

Further, the door end rubber 3 has a partition portion 35 between the base portion 31 and the cover portion 32 that partitions the cavity portion 30 into a plurality of (three in the present embodiment) storage spaces 301 to 303. Hereinafter, the three accommodation spaces 301 to 303 will be referred to as the first to third accommodation spaces 301, 302, 303. The first to third accommodation spaces 301, 302, 303 are arranged in the boarding / alighting direction, the first accommodation space 301 is formed in the central portion in the boarding / alighting direction, and the second accommodation space 302 is from the first accommodation space 301. A third accommodation space 303 is formed on the outside of the passenger compartment, and a third accommodation space 303 is formed on the passenger interior side of the first accommodation space 301.

The partition portion 35 is a first wall portion 351 that separates the first storage space 301 and the second storage space 302, and a second wall portion that separates the first storage space 301 and the third storage space 303. It consists of 352. The first wall portion 351 and the second wall portion 352 are provided in parallel with each other along the moving direction of the slide door 11. Further, in the first wall portion 351 and the second wall portion 352, one end portion is continuous with the base portion 31 and the other end portion is continuous with the cover portion 32. As a result, the first to third accommodation spaces 301, 302, and 303 are partitioned by the partition portion 35 without any gap. The three linear pressure-sensitive members 4 are housed in the first to third storage spaces 301, 302, and 303, respectively.

As described above, in the present embodiment, the door end rubber 3 has first to third accommodation spaces 301, 302, 303 for accommodating a plurality of linear pressure sensitive members 4 in the cavity portion 30, respectively. The movement of the linear pressure-sensitive member 4 between the first to third accommodation spaces 301, 302, and 303 is regulated by the partition portion 35.

Of the area occupied by the first accommodation space 301 in the cross section shown in FIG. 1, the area of the hollow space excluding the portion where the linear pressure sensitive member 4 is arranged is the portion where the linear pressure sensitive member 4 is arranged. Larger than the area. That is, assuming that the ratio of the hollow space in the first accommodation space 301 is the space ratio, this space ratio is 50% or more. As a result, the impact when the door end rubber 3 collides with the body of the passenger 8 during the closing operation of the slide doors 11 and 11 is alleviated.

In the present embodiment, the space ratio of the second and third accommodation spaces 302 and 303 is 50% or more. However, the space ratio of the second and third accommodation spaces 302 and 303 is lower than the space ratio of the first accommodation space. The desirable range of the space ratio of the first accommodation space is 50% or more and 80% or less, and the desirable range of the space ratio of the second and third accommodation spaces 302 and 303 is 40% or more and 70% or less. This is because if the space ratio is too low, the cushioning property is lowered, and if the space ratio is too high, the position of the linear pressure sensitive member 4 may not be determined in an appropriate range.

FIG. 3A is a perspective view showing the linear pressure sensitive member 4. FIG. 3B is a cross-sectional view of the linear pressure sensitive member 4 in a natural state in which no external force is applied. FIG. 3C is a cross-sectional view of the linear pressure sensitive member 4 in a pressurized state to which an external force is applied.

The linear pressure-sensitive member 4 has a tube 41 which is a tubular elastic body, and a plurality of conductor wires 42 arranged inside the tube 41 so as to be separated from each other. More specifically, two conductor wires 42 are spirally held on the inner surface of the tube 41 by exposing a part thereof, and a space 40 is formed in the central portion of the tube 41. The tube 41 is made of an insulating rubber material such as silicone rubber or ethylene propylene rubber, and has elasticity that deforms when an external force is applied and is immediately restored when the external force disappears.

In a natural state in which no external force is applied to the tube 41, the plurality of conductor wires 42 are held in non-contact with each other across the space 40. Further, when an external force is applied to the tube 41, the tube 41 is elastically deformed and the plurality of conductor wires 42 come into contact with each other. In each conductor wire 42, a metal stranded wire 421 in which a plurality of metal strands are twisted is coated with a conductive coating layer 422. With this structure, the linear pressure sensitive member 4 can sense external force from all directions in the radial direction of the tube 41.

FIG. 4 is a circuit diagram showing an example of an electric circuit 5 for detecting pinching by the sliding door 11 by the linear pressure sensitive member 4. The electric circuit 5 includes two conductor wires 42 of the linear pressure-sensitive member 4, and includes a power supply 51 and a contact detection resistor 52 that connects the ends of the two conductor wires 42 to each other. It has an ammeter 53 and a current limiting resistor 54 connected in series with the power supply 51. The ammeter 53 has, for example, a current sensor such as a Hall IC and an amplifier, and its detection signal is output to the control device 14.

In the electric circuit 5 configured as described above, when the linear pressure-sensitive member 4 is pressurized and the conductor wires 42 come into contact with each other, the current detected by the ammeter 53 changes. The control device 14 recognizes that pinching by the slide door 11 has occurred due to a change in the detection signal of the ammeter 53, and stops or reverses the drive device 13.

Note that FIG. 4 shows only the electric circuit 5 corresponding to one linear pressure-sensitive member 4, but in the present embodiment, the pinch detection sensor 2 has three linear pressure-sensitive members 4. Therefore, an electric circuit 5 is provided corresponding to each linear pressure-sensitive member 4, and a detection signal of the ammeter 53 of each electric circuit 5 is output to the control device 14. When the control device 14 recognizes that any of the linear pressure sensitive members 4 has been pressurized, the control device 14 stops or reverses the drive device 13.

In the present embodiment, in order to enable reliable detection of pinching even when an external force is applied from a direction inclined with respect to the moving direction when the slide door 11 is closed, a plurality of linear pressure sensitive members 4 Are placed at different positions in the boarding / alighting direction. That is, the plurality of linear pressure-sensitive members 4 are arranged in a direction intersecting the moving direction of the sliding doors 11 and 11 and the longitudinal direction (vertical direction) of the door end rubber 3, and are heavy in the moving direction of the sliding door 11. It is arranged so that it does not become. Hereinafter, the directions intersecting the moving directions of the sliding doors 11 and 11 and the longitudinal direction of the door end rubber 3 are referred to as alignment directions.

More specifically, of the three linear pressure-sensitive members 4, one linear pressure-sensitive member 4 accommodated in the first accommodation space 301 is arranged in the central portion of the cavity 30 in the arrangement direction, and the like. The two linear pressure sensitive members 4 are arranged on one side (outside the vehicle interior) and the other side (inside the vehicle interior) in the arrangement direction of the one linear pressure sensitive member 4 accommodated in the first accommodation space 301. Has been done. The linear pressure sensitive member 4 arranged on one side is housed in the second storage space 302, and the linear pressure sensitive member 4 arranged on the other side is housed in the third storage space 303. There is.

The lengths of the first to third accommodating spaces 301 to 303 in the width direction of the sliding door 11 along the moving direction of the sliding door 11 are larger than the diameter of the linear pressure sensitive member 4, and the first accommodating space 301 The linear pressure sensitive member 4 accommodated in the first accommodation space 301 is in the first accommodation space 301, and the linear pressure sensitive member 4 accommodated in the second accommodation space 302 is in the second accommodation space 302 and in the third accommodation space 302. The linear pressure-sensitive member 4 accommodated in the accommodation space 303 can move along the width direction of the slide door 11 in the third accommodation space 303, respectively.

Due to the structure of the door end rubber 3, even if a part of the body of the passenger 8 is sandwiched between the slide doors 11 and 11 when the slide doors 11 and 11 are closed, the first to third accommodation spaces 301 to 303 The cushioning property of the door end rubber 3 enhanced by the space of the passenger 8 alleviates the pain felt by the passenger 8. In particular, the first accommodating space 301 located in the central portion in the alignment direction has a longer length in the width direction of the slide door 11 than the second and third accommodating spaces 302 and 303, and is in the closing direction in the cover portion 32. The impact when the tip portion collides with the passenger 8 is greatly alleviated. In the present embodiment, the length of the first accommodation space 301 in the width direction of the slide door 11 is twice or more the diameter of the linear pressure-sensitive member 4.

FIG. 5 shows a line in which the tip portion of the cover portion 32 of the door end rubber 3 in the closing direction collides with a part 81 of the body of the passenger 8 when the sliding door 11 is closed, and is accommodated in the first accommodation space 301. It shows a state in which the pressure sensitive member 4 is pressurized. The linear pressure-sensitive member 4 accommodated in the first accommodation space 301 is sandwiched between the cover portion 32 and the base portion 31, and the tube 41 is elastically deformed so that the two conductor wires 42 come into contact with each other.

FIG. 6 shows a railway in a state where the string-shaped member 92 of the carry-on item 9 of the passenger 8 who got off the outside of the passenger compartment is sandwiched between the left and right sliding doors 11 and 11, and the main body member 91 is left behind in the passenger compartment side. The state when the vehicle 1 starts running in the direction of travel indicated by the arrow A _{3 is shown.}

In this state, the linear pressure-sensitive member 4 housed in the second storage space 302 of the pinch detection sensor 2 attached to the slide door 11 on the rear side in the traveling direction among the left and right slide doors 11 and 11 is pressurized. , The two conductor wires 42 come into contact with each other. As a result, pinching is detected. That is, in the pinch detection sensor 2 according to the present embodiment, even if the thickness of the string-shaped member 92 is such that pinch is not detected only by being pinched between the left and right slide doors 11 and 11, FIG. As shown in the above, it is possible to detect pinching by applying an external force from a direction inclined with respect to the closing direction of the slide door 11.

Although not shown, when the railroad vehicle 1 starts running with the string-shaped member 92 sandwiched between the left and right sliding doors 11 and 11, the cover portion 32 of the door end rubber 3 becomes a car. By being pulled to the outdoor side, the linear pressure-sensitive member 4 accommodated in the third accommodating space 303 may be pressurized and the two conductor wires 42 may come into contact with each other. Further, the linear pressure-sensitive member 4 accommodated in the third accommodation space 303 collides with the door end rubber 3 when the passenger 8 tries to go out from the vehicle interior side to the vehicle interior outside while the slide doors 11 and 11 are closed. It can also be pressurized. Similarly, the linear pressure sensitive member 4 accommodated in the second accommodation space 302 hits the door end rubber 3 while the passenger 8 tries to enter the passenger compartment side from the outside of the passenger compartment while the sliding doors 11 and 11 are closed. It can also be pressurized.

When the pinch detection sensor 2 detects the pinch after the railroad vehicle 1 departs, the railroad vehicle 1 is stopped promptly by the manual operation of the driver who received the alarm, or automatically in the case of automatic driving. The sliding doors 11 and 11 are opened.

(Effect of the first embodiment)
According to the first embodiment described above, the following actions and effects (1) to (3) can be obtained.

(1) Since the cavity 30 is divided into the first to third accommodation spaces 301 to 303 by the partition 35, the movement of the plurality of linear pressure-sensitive members 4 in the cavity 30 of the door end rubber 3 can be performed. By limiting, the plurality of linear pressure sensitive members 4 can be localized at positions that receive external forces from each direction. As a result, it is possible to detect pinching even when an external force acts from a direction inclined with respect to the moving direction when the slide door 11 is closed.

(2) Since the plurality of linear pressure-sensitive members 4 do not overlap in the moving direction of the slide door 11 and are arranged at different positions in the arrangement direction, the angle range in which the pressure can be detected by the pinch detection sensor 2. Spreads. Further, in the present embodiment, the sandwiching of the slide door 11 in the closing direction, which occurs frequently, is detected by the linear pressure-sensitive member 4 arranged at the center of the line-up direction, and is inclined with respect to the closing direction of the slide door 11. Since the pinching in the desired direction is detected by the other two linear pressure-sensitive members 4, it is possible to reliably detect the pinching in various modes.

(3) Since the first to third accommodating spaces 301, 302, and 303 are partitioned by the partition portion 35 without any gap, the first to third accommodating spaces 301, 302, and 303 can be accommodated no matter how the door end rubber 3 is deformed. The linear pressure-sensitive member 4 does not move between the spaces 301, 302, and 303, and a plurality of linear pressure-sensitive members 4 can be appropriately arranged.

[Second Embodiment]
Next, a second embodiment of the present invention will be described with reference to FIG. 7. FIG. 7 is a cross-sectional view showing a pinch detection sensor 2A according to the second embodiment. In the present embodiment, the base portion 31 of the door end rubber 3 has a semicircular protrusion 311 protruding toward the closing direction side (cover portion 32 side) at the central portion in the arrangement direction. The protrusions 311 are formed so as to straddle the first to third accommodation spaces 301 to 303, and project the largest toward the first accommodation space 301.

According to the pinch detection sensor 2A according to the second embodiment, the length of the first accommodation space 301 is shorter than that of the first embodiment, so that the amount of deformation of the cover portion 32 is small. However, the two conductor wires 42 of the linear pressure-sensitive member 4 accommodated in the first accommodation space 301 come into contact with each other, and it is possible to detect pinching even with a relatively small external force. Further, when an external force is applied from a direction inclined with respect to the closing direction of the slide door 11, the linear pressure-sensitive member 4 accommodated in the second accommodating space 302 or the third accommodating space 303 is formed on the protrusion 311. Since they are pressed and the two conductor wires 42 come into contact with each other, it is possible to detect the pinching with a relatively small external force even for the pinching in this direction.

[Third Embodiment]
FIG. 8 is a cross-sectional view showing the pinch detection sensor 2B according to the third embodiment. Similar to the detection switch 2A according to the second embodiment, the detection switch 2B is provided with a protrusion 311 protruding toward the closing direction at the center of the line-up direction in the base portion 31, but the protrusion 311 The shape is different from the second embodiment and is formed in a trapezoidal shape. The width of the protrusions 311 in the arrangement direction becomes wider as the distance from the top surface in the first accommodation space 301 increases, and the distance between both side surfaces in the second and third accommodation spaces 302 and 303 increases. Further, in the pinch detection sensor 2B, the first wall portion 351 and the second wall portion 352 are separated from each other in the moving direction of the slide door 11 from the corners between the top surface and both side surfaces of the protrusion 311. It is inclined and extended so as to be.

Also in this third embodiment, as in the second embodiment, it is possible to detect pinching even with a relatively small external force.

[Fourth Embodiment]
Next, a fourth embodiment of the present invention will be described with reference to FIG.

FIG. 9 is a cross-sectional view showing the pinch detection sensor 2C according to the fourth embodiment. In the first to third embodiments, the case where the cavity 30 of the door end rubber 3 is divided into three accommodation spaces has been described, but in the pinch detection sensor 2C according to the present embodiment, the cavity 30 is It is divided into two storage spaces. More specifically, the cavity 30 is divided into a first storage space 304 and a second storage space 305 by a single wall-shaped partition 353, and the first storage space 304 and the second storage space 305. Each of the linear pressure sensitive members 4 is housed in one.

Also in this embodiment, it is possible to detect pinching in which an external force acts from a direction inclined with respect to the moving direction when the slide door 11 is closed. Further, since the number of the linear pressure-sensitive members 4 can be reduced, the cost can be reduced as compared with the first to third embodiments.

[Fifth Embodiment]
Next, a fourth embodiment of the present invention will be described with reference to FIG. FIG. 10 is a cross-sectional view showing the pinch detection sensor 2D according to the fifth embodiment. In the first to fourth embodiments, the case where the first to third accommodation spaces 301 to 303 are partitioned by the partition portion 35 without a gap has been described, but in the pinch detection sensor 2D according to the present embodiment, the case where the first to third accommodation spaces 301 to 303 are partitioned without a gap has been described. The first to third accommodation spaces 301 to 303 communicate with each other through the _{gaps S 1} and S _2. The size of the gap S _1, S ₂ is smaller than the diameter of the linear pressure sensing member 4, the movement of the first to third receiving space 301 to 303 linear pressure sensing member between 4, each implementation of the It is regulated by the partition 35 in the same manner as in the above form.

Also according to the fifth embodiment, the plurality of linear pressure sensitive members 4 can be localized at positions where external forces are received from each direction, and the die configuration used for extrusion molding of the door end rubber 3 can be formed. Simplified and easy to manufacture.

[Sixth Embodiment]
Next, a sixth embodiment of the present invention will be described with reference to FIG. FIG. 11 is a cross-sectional view showing the pinch detection sensor 2E according to the sixth embodiment. The pinch detection sensor 2E is provided with protrusions 311 on the base portion 31 of the door end rubber 3 of the pinch detection sensor 2D according to the fifth embodiment, as in the second embodiment.

According to the sixth embodiment, in addition to the effect of the fifth embodiment, it is possible to detect pinching with a relatively small external force as in the second embodiment.

[7th Embodiment]
Next, a seventh embodiment of the present invention will be described with reference to FIG. FIG. 12 is a cross-sectional view showing the pinch detection sensor 2F according to the seventh embodiment. The pinch detection sensor 2F is provided with a protrusion 311 on the base portion 31 of the door end rubber 3, and a partition portion 35 is provided on the tip portion of the protrusion 311. The partition portion 35 has an arcuate surface whose surface facing the cover portion 32 has a larger curvature than the outer peripheral surface of the linear pressure sensitive member 4, and has first and second protrusions 354 and 355 at both ends in the alignment direction. have. _{Gap S 3} and S ₄ are formed between the first and second protrusions 354 and 355 and the cover portion 32, respectively. The size of the gaps S ₃ and S ₄ is narrower than the diameter of the linear pressure sensitive member 4, and the movement of the linear pressure sensitive member 4 between the first to third accommodation spaces 301 to 303 is restricted.

According to the seventh embodiment, the protrusion 311 makes it possible to detect pinching with a relatively small external force, and the first to third accommodating spaces 301 to 303 pass through the _{gaps S 3} and S _4. Since they are communicated with each other, the door end rubber 3 can be easily manufactured.

[Eighth Embodiment]
Next, an eighth embodiment of the present invention will be described with reference to FIG. FIG. 13 is a cross-sectional view showing a pinch detection sensor 2G according to the eighth embodiment. The pinch detection sensor 2G has an inward protrusion 321 in which the cover portion 32 of the door end rubber 3 projects toward the base portion 31 toward the linear pressure-sensitive member 4 accommodated in the first accommodation space 301. ing. The first wall portion 351 that separates the first accommodation space 301 and the second accommodation space 302, and the second wall portion 352 that separates the first accommodation space 301 and the third accommodation space 303 are the base portions. It is provided between 31 and the inward protrusion 321 of the cover portion 32.

According to the eighth embodiment, the linear pressure sensitive member 4-2 accommodated in the first accommodation space 301 even if the amount of deformation of the cover portion 32 is smaller than that in the first embodiment. The conductor wires 42 of the book come into contact with each other, and it is possible to detect pinching of the slide door 11 in the closing direction even with a relatively small external force.

[9th Embodiment]
Next, a ninth embodiment of the present invention will be described with reference to FIG. In the first to eighth embodiments, the description has been made on the premise that a pinch detection sensor having the same structure is used for the left and right sliding doors 11 and 11, but in the present embodiment, one of the left and right sliding doors 11 and 11 is used. The structure of the pinch detection sensor attached to the slide door 11 is different from that of the pinch detection sensor attached to the other slide door 11. Hereinafter, the pinch detection sensor attached to one slide door 11 will be referred to as a pinch detection sensor 2H on one side, and the pinch detection sensor attached to the other slide door 11 will be referred to as a pinch detection sensor 2I on the other side.

The one-side pinch detection sensor 2H is provided with an outer protrusion 322 on the cover portion 32 of the pinch detection sensor 2G according to the eighth embodiment. The outer protrusion 232 projects from the central portion in the alignment direction of the cover portion 32 toward the other side pinch detection sensor 2I on the side opposite to the cavity portion 30.

The other side pinch detection sensor 2I is a modification of the pinch detection sensor 2C according to the fourth embodiment, and the outer protrusion 322 of the one side pinch detection sensor 2H is fitted in the central portion in the alignment direction of the cover portion 32. The fitting recess 300 to be fitted is recessed. The fitting recess 300 is formed in a range from the cover portion 32 to the partition portion 353. In the door end rubber 3 of the other side pinch detection sensor 2I, the thickness of the partition portion 353 that divides the cavity 30 into the first accommodation space 304 and the second accommodation space 305 is at least on the closing direction side. At the end, it is formed thicker than the width of the fitting recesses 300 in the alignment direction.

According to the ninth embodiment, when the passenger 8 or its carrying item 9 is sandwiched between the left and right sliding doors 11 and 11, the pressure due to the sandwiching is applied from the outer projection 322 of the one-sided pinch detection sensor 2H to the first. It becomes easy to be transmitted to the linear pressure-sensitive member 4 accommodated in the accommodating space 301, and pinching can be reliably detected. Further, by fitting the outer protrusion 322 of the one-side pinch detection sensor 2H into the fitting recess 300 of the other-side pinch detection sensor 2I, the airtightness inside the railroad vehicle 1 is improved, and the slide doors 11 and 11 are used. Rattling is also suppressed.

(Summary of embodiments)
Next, the technical concept grasped from the above-described embodiment will be described with reference to the reference numerals and the like in the embodiment. However, each reference numeral in the following description is not limited to the member or the like in which the components in the claims are specifically shown in the embodiment.

[1] A pinch detection sensor (2) that detects pinching when the slide door (11) is closed, has a hollow portion (30) inside, and is in the closing movement direction (A) of the slide door (11). _The door end rubber (3) attached to the tip of 2) and a plurality of conductor wires (42) housed in the cavity (30) are arranged inside a tubular elastic body (tube 41) so as to be separated from each other. A plurality of linear pressure-sensitive members (4) are provided, and the door end rubber (3) accommodates the plurality of linear pressure-sensitive members (4) in the cavity (30). A pinch detection sensor having a storage space (301 to 303) and whose movement of the linear pressure sensitive member (4) between the plurality of storage spaces (301 to 303) is regulated by a partition portion (35). (2,2A-2G).

[2] The plurality of linear pressure-sensitive members (4) are arranged in an arrangement direction intersecting the moving direction of the sliding door (11) and the longitudinal direction of the door end rubber (3), and the sliding door. The pinch detection sensor (2, 2A to 2G) according to the above [1], which is arranged so as not to overlap in the moving direction of (11).

[3] Having the three linear pressure-sensitive members (4), one of the three linear pressure-sensitive members (4) is in the hollow portion (30). Arranged in the central portion of the alignment direction, the other two linear pressure-sensitive members (4) are arranged on one side and the other side of the one _{linear pressure-sensitive member (4) in the alignment direction (A 1).} The pinch detection sensor (2,2A, 2B, 2D to 2G) according to the above [2].

[4] The door end rubber (3) includes a cover portion (32) that covers the plurality of linear pressure-sensitive members (4) on the _{closing movement direction (A 2) side of the cavity portion (30).} The base portion (31) forming the cavity portion (30) is integrally provided with the cover portion (32), and the cover portion (32) is located at the central portion in the alignment direction and in the closing movement direction. are curved in an arch shape protruding in (a _2), said base portion (31) protrudes to the arrangement direction of the closing movement direction at the central portion (a ₂₎ having a projection (311), the [ 2] or the pinch detection sensor (2A, 2B, 2E, 2F) according to [3].

[5] The door end rubber (3) includes a cover portion (32) that covers the plurality of linear pressure-sensitive members (4) on the _{closing movement direction (A 2) side of the cavity portion (30).} The base portion (31) forming the cavity portion (30) is integrally provided with the cover portion (32), and the cover portion (32) is located at the central portion in the alignment direction and in the closing movement direction. The above, which is curved in an arch shape protruding toward (A ₂ ) and has an inward protrusion (321) protruding toward the base portion (31) toward the one linear pressure-sensitive member (4). The pinch detection sensor (2G) according to [3].

[6] The door end rubber (3) includes a cover portion (32) that covers the plurality of linear pressure-sensitive members (4) on the _{closing movement direction (A 2) side of the cavity portion (30).} The base portion (31) forming the cavity portion (30) is integrally provided with the cover portion (32), and the cover portion (32) is located at the central portion in the alignment direction and in the closing movement direction. The pinch detection sensor according to the above [3], which is curved in an arch shape protruding from (A ₂ ) and has an outer protrusion (322) protruding to the side opposite to the cavity (30) side. 2H).

[7] The pinch detection sensors (2, 2A to 2C,) according to the above [1] to [6], wherein the plurality of accommodation spaces (301 to 303) are partitioned without a gap by the partition portion (35). 2G).

Although the embodiments of the present invention have been described above, the embodiments described above do not limit the invention according to the claims. It should also be noted that not all combinations of features described in the embodiments are essential to the means for solving the problems of the invention.

In addition, the present invention can be appropriately modified and implemented without departing from the spirit of the present invention. For example, in the above embodiment, the case where the present invention is applied to the sliding door 11 that opens and closes the entrance / exit 10 of the railroad vehicle 1 has been described, but the present invention is not limited to this, and for example, the railroad vehicle 1 is provided on the platform 7. It is also possible to apply the present invention to a so-called platform door sliding door that opens after stopping and closes before the departure of the railway vehicle 1.

1 ... Railroad vehicle 10 ... Entrance / exit 11 ... Sliding doors 2, 2A to 2G ... Pinching detection sensor 3 ... Door tip rubber 30 ... Cavities 301, 302, 303 ... First to third accommodation spaces 304, 305 ... First And the second accommodating space 31 ... Base part 311 ... Protrusion 32 ... Cover part 321 ... Inner protrusion 322 ... Outer protrusion 35 ... Partition part 4 ... Linear pressure sensitive member 40 ... Space 41 ... Tube (elastic body)
42 ... Conductor wire

Claims (7)

It is a pinch detection sensor that detects pinch when the sliding door is closed.
A door tip rubber that has a hollow part inside and is attached to the tip of the sliding door in the closing movement direction,
A plurality of linear pressure-sensitive members housed in the cavity and having a plurality of conductor wires arranged inside a tubular elastic body so as to be separated from each other are provided.
The door end rubber has a plurality of accommodating spaces for accommodating the plurality of linear pressure-sensitive members in the cavity, and the linear pressure-sensitive members accommodated in the accommodating space are contained in the accommodating space. It is movable and the movement of the linear pressure sensitive member between the plurality of accommodation spaces is regulated by a partition.
Pinching detection sensor. The plurality of linear pressure-sensitive members are arranged in an arrangement direction that intersects the moving direction of the sliding door and the longitudinal direction of the door end rubber, and is arranged so as not to overlap with the moving direction of the sliding door. ,
The pinch detection sensor according to claim 1. It has three linear pressure-sensitive members, one of the three linear pressure-sensitive members is arranged at the center of the cavity in the alignment direction, and the other two wires. The state pressure sensitive member is arranged on one side and the other side in the arrangement direction of the one linear pressure sensitive member.
The pinch detection sensor according to claim 2. The door end rubber integrally integrates a cover portion that covers the plurality of linear pressure-sensitive members on the closing movement direction side of the cavity portion and a base portion that forms the cavity portion between the cover portions. Have and
The cover portion is curved in an arch shape that protrudes in the closing movement direction at the central portion in the alignment direction.
The base portion has a protrusion protruding in the closing movement direction at the central portion in the alignment direction.
The pinch detection sensor according to claim 2 or 3. The door end rubber integrally integrates a cover portion that covers the plurality of linear pressure-sensitive members on the closing movement direction side of the cavity portion and a base portion that forms the cavity portion between the cover portions. Have and
The cover portion is curved in an arch shape that protrudes in the closing movement direction at the central portion in the alignment direction, and has an inward protrusion that protrudes toward the base portion toward the one linear pressure-sensitive member. Have,
The pinch detection sensor according to claim 3. The door end rubber integrally integrates a cover portion that covers the plurality of linear pressure-sensitive members on the closing movement direction side of the cavity portion and a base portion that forms the cavity portion between the cover portions. Have and
The cover portion is curved in an arch shape that protrudes in the closing movement direction at the central portion in the alignment direction, and has an outer protrusion that protrudes on the side opposite to the cavity side.
The pinch detection sensor according to claim 3. The plurality of storage spaces are partitioned by the partition without a gap.
The pinch detection sensor according to any one of claims 1 to 6.

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