阅读说明：本技术 夹入检测传感器 (Pinch detection sensor ) 是由 川濑贤司 铃木秀一 于 2019-06-11 设计创作，主要内容包括：本发明提供夹入检测传感器,在滑动门的关闭动作时,在从相对于滑动门的移动方向倾斜的方向作用外力的情况下也能检测夹入。检测滑动门(11)的关闭动作时的夹入的夹入检测传感器(2)具备：在内部具有空腔部(30)并安装于滑动门(11)的关闭移动方向的前端部的门端橡胶(3)；和收纳在空腔部(30)内并在管件(41)的内侧相互分离地配置多个导体线(42)而成的多个线状压敏部件(4)。门端橡胶(3)在空腔部(30)内具有分别收纳多个线状压敏部件(4)的多个收纳空间(301～303),并由分隔部(35)限制线状压敏部件(4)在多个收纳空间(301～303)之间的移动。(The invention provides a clamping detection sensor, which can detect clamping even when external force acts from a direction inclined relative to the moving direction of a sliding door during the closing action of the sliding door. A pinch detection sensor (2) for detecting pinch during a closing operation of a slide door (11) is provided with: a door end rubber (3) having a cavity (30) therein and attached to the front end of the sliding door (11) in the closing movement direction; and a plurality of linear pressure-sensitive members (4) which are housed in the cavity (30) and in which a plurality of conductor wires (42) are arranged inside the tube (41) so as to be separated from each other. The door end rubber (3) has a plurality of storage spaces (301-303) for respectively storing a plurality of linear pressure-sensitive members (4) in a cavity portion (30), and the movement of the linear pressure-sensitive members (4) between the plurality of storage spaces (301-303) is limited by a partition portion (35).)

1. A pinch detection sensor for detecting pinch during a closing operation of a slide door, comprising:

a door end rubber which is provided with a cavity inside and is mounted on the front end part of the sliding door in the closing moving direction; and

a plurality of linear pressure-sensitive members housed in the cavity and formed by disposing a plurality of conductor wires inside the tubular elastic body so as to be spaced apart from each other,

the door end rubber has a plurality of storage spaces in the cavity portion, each of which stores the linear pressure-sensitive member, and movement of the linear pressure-sensitive member between the plurality of storage spaces is restricted by a partition portion.

2. The pinch detection sensor of claim 1,

the plurality of linear pressure-sensitive members are arranged in an arrangement direction intersecting a moving direction of the slide door and a longitudinal direction of the door end rubber, and are arranged so as not to overlap in the moving direction of the slide door.

3. The pinch detection sensor of claim 2,

the linear pressure-sensitive member includes three linear pressure-sensitive members, and one of the three linear pressure-sensitive members is disposed in a central portion of the cavity portion in the arrangement direction, and the other two linear pressure-sensitive members are disposed on one side and the other side of the one linear pressure-sensitive member in the arrangement direction.

4. The pinch detection sensor of claim 2 or 3,

the gate end rubber integrally includes a cover portion and a base portion, the cover portion covering the plurality of linear pressure-sensitive members on the closing movement direction side of the cavity portion, the cavity portion being formed between the base portion and the cover portion,

the cover portion is curved in an arch shape protruding in the closing movement direction at a central portion in the arrangement direction,

the base portion has a protrusion protruding in the closing movement direction at a central portion in the arrangement direction.

5. The pinch detection sensor of claim 3,

the gate end rubber integrally includes a cover portion and a base portion, the cover portion covering the plurality of linear pressure-sensitive members on the closing movement direction side of the cavity portion, the cavity portion being formed between the base portion and the cover portion,

the cover portion is curved in an arch shape protruding in the closing movement direction at a central portion in the arrangement direction, and has an inner protrusion protruding toward the base portion toward the one linear pressure-sensitive member.

6. The pinch detection sensor of claim 3,

the gate end rubber integrally includes a cover portion and a base portion, the cover portion covering the plurality of linear pressure-sensitive members on the closing movement direction side of the cavity portion, the cavity portion being formed between the base portion and the cover portion,

the cover portion is curved in an arch shape protruding in the closing movement direction at a central portion in the arrangement direction, and has an outer protrusion protruding to an opposite side of the cavity portion.

7. A pinch detection sensor according to any one of claims 1 to 6,

the plurality of housing spaces are divided by the partition without a gap.

Technical Field

The present invention relates to a pinch detection sensor that detects pinching during a closing operation of a slide door.

Background

In recent years, a sliding door that slides in the front-rear direction of a railway vehicle is provided at an entrance of the railway vehicle where passengers get on and off. Such a sliding door of a railway vehicle is provided with a structure for detecting that a body of a passenger or a carried object is caught during a closing operation (for example, see patent document 1).

The door clamping detection device described in patent document 1 includes: a hollow door end rubber outer member attached to an edge portion of a front end of a sliding door of a railway vehicle in a closing direction; a door end rubber inner part which is freely inserted and drawn in the hollow part of the door end rubber outer part; and a piezoelectric material as a foreign matter detection sensor fixed to a front end portion of the door end rubber inner. If the foreign matter is caught, the piezoelectric material converts the deformation of the door end rubber inner member into an electric signal and outputs the electric signal, and the electric signal is amplified and transmitted to the alarm device, so that the alarm device gives an alarm. Then, the crew member performs an operation of opening the slide door based on the alarm, and cancels the sandwiched state.

On the other hand, the present applicant proposed a device described in patent document 2 as a pull switch for detecting, for example, pinching of a sliding door of an automobile. The pull switch has: a cord switch main body in which a plurality of conductor wires are disposed in a spiral shape while being spaced apart from each other inside a tubular member; a mounted member having a higher elastic modulus than that of the tubular member of the pull switch body and disposed along the pull switch body; and a belt-shaped impact absorbing member interposed between the cord switch body and the attached member, and having an elastic modulus lower than that of the tubular member of the cord switch body. The pull switch is capable of detecting pressure from any direction in the radial direction of the tubular member.

Disclosure of Invention

Problems to be solved by the invention

In the door pinching detection device described in patent document 1, the pinching can be reliably detected when the piezoelectric material receives a pressure in the moving direction during the closing operation of the sliding door, but when an external force acts in a direction inclined with respect to the moving direction during the closing operation or when the foreign matter to be pinched is in the form of a string, the piezoelectric material may not necessarily reliably react. Therefore, when a passenger grips a portable object, for example, a main body member such as a ferrule for receiving a card or the like, connected to a distal end portion of the string-shaped member and gets off the railway vehicle, if the string-shaped member is caught by the slide door, the passenger does not issue an alarm even if the passenger pulls the string-shaped member from the outside of the vehicle compartment, and the railway vehicle may get out while maintaining the caught state of the string-shaped member.

In order to detect the pinching even when the pinching is made in this manner, the inventors considered a method of housing a plurality of pull switch main bodies of the pull switch described in patent document 2 in a cavity portion of the door end rubber. However, in this case, if the volume of the cavity is made larger than the size necessary for housing the plurality of pull switch bodies and an appropriate hollow space cannot be secured, the cushioning property is reduced, and a large impact is applied to the occupant when the occupant's body is pinched. If the cavity is made too large, the positions of the respective pull switch bodies in the cavity may be unstable, and the pinching in the various modes may not be detected reliably.

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

Means for solving the problems

The present invention has been made to solve the above problems, and provides a pinch detection sensor for detecting pinch during a closing operation of a sliding door, including: a door end rubber which is provided with a cavity inside and is mounted on the front end part of the sliding door in the closing moving direction; and a plurality of linear pressure-sensitive members housed in the cavity portion, and configured by disposing a plurality of conductor wires inside the tubular elastic body so as to be separated from each other, wherein the door end rubber has a plurality of housing spaces for housing the plurality of linear pressure-sensitive members, respectively, in the cavity portion, and movement of the linear pressure-sensitive members between the plurality of housing spaces is restricted by a partition portion.

The effects of the invention are as follows.

According to the pinch detection sensor of the present invention, even when an external force acts in a direction inclined with respect to the moving direction of the slide door during the closing operation of the slide door, pinch can be detected.

Drawings

Fig. 1 is an explanatory view showing the vicinity of an entrance of a railway vehicle to which a pinch detection sensor according to a first embodiment of the present invention is attached to each of left and right sliding doors.

Fig. 2 is a sectional view showing a pinch detection sensor.

Fig. 3 (a) is a perspective view showing the linear pressure-sensitive member. (b) Is a cross-sectional view of the linear pressure-sensitive member in a natural state without receiving an external force. (c) The pressure-sensitive member is a cross-sectional view of the linear pressure-sensitive member in a pressurized state by an external force.

Fig. 4 is a circuit diagram showing an example of a circuit for detecting the sandwiching of the slide door by the linear pressure-sensitive member.

Fig. 5 is an explanatory diagram showing a state in which a front end portion of the cover portion of the door end rubber in the closing direction collides with a part of the body of the passenger.

Fig. 6 is an explanatory view showing a state when the railway vehicle starts to run out in a state where the string-like member of the carried object of the passenger getting off to the outside of the vehicle compartment is sandwiched between the left and right slide doors with the main body member left inside the vehicle compartment.

Fig. 7 is a sectional view showing a pinch detection sensor of the second embodiment.

Fig. 8 is a sectional view showing a pinch detection sensor of the third embodiment.

Fig. 9 is a sectional view showing a pinch detection sensor of the fourth embodiment.

Fig. 10 is a sectional view showing a pinch detection sensor of the fifth embodiment.

Fig. 11 is a sectional view showing a pinch detection sensor of the sixth embodiment.

Fig. 12 is a sectional view showing a pinch detection sensor of the seventh embodiment.

Fig. 13 is a sectional view showing a pinching detection sensor according to the eighth embodiment.

Fig. 14 is a sectional view showing a pinch detection sensor of the ninth embodiment.

Description of the symbols

1-railway vehicle, 10-entrance/exit, 11-sliding door, 2A-2G-clamping detection sensor, 3-door end rubber, 30-cavity part, 301, 302, 303-first storage space to third storage space, 304, 305-first storage space and second storage space, 31-base part, 311-protrusion, 32-cover part, 321-inner protrusion, 322-outer protrusion, 35-partition part, 4-linear pressure sensitive component, 40-space, 41-pipe (elastic body), 42-conductor wire.

Detailed Description

First embodiment

Fig. 1 is an explanatory view showing the vicinity of an entrance 10 of a railway vehicle 1 in which a pinch detection sensor 2 according to a first embodiment of the present invention is attached to each of left and right sliding doors 11 and 11. Fig. 1 shows a passenger 8 who gets off a railway vehicle 1 to a platform 7 of a station and a carrier 9 of the passenger 8. In FIG. 1, the arrow A is shown₁Shows the direction of ascent and descent of the passenger 8 and is indicated by arrow A₂The moving direction (closing direction) of the sliding doors 11, 11 during the closing operation is shown.

The moving direction of the slide doors 11, 11 is parallel to the traveling direction of the railway vehicle 1. The ascending and descending direction is perpendicular to the traveling direction of the railway vehicle 1 and parallel to the thickness direction of the slide doors 11, 11. Each sliding door 11 has a door panel 111 and a window glass 112 fitted into a window portion 111a of the door panel 111.

The portable object 9 includes a main body member 91 such as a card case for storing a card and a string-like member 92 having one end connected to the main body member 91. The other end of the string-like member 92 is held by the passenger 8. The other end of the string-like member 92 may be hung on, for example, a waist belt of the passenger 8.

The slide doors 11 and 11 slide in the front-rear direction of the vehicle body 12 by driving devices 13 and 13 provided in the vehicle body 12 to open and close the entrance 10. The driving devices 13 and 13 are disposed above the entrance 10 and have linear motion mechanisms such as linear motors and ball screws. The driving devices 13 and 13 are controlled by a control device 14. The movement ranges (the positions of the forward end and the backward end) of the sliding doors 11 and 11 are defined by stoppers (not shown) provided in the driving devices 13 and 13.

The pinch detection sensor 2 is attached to each end of the left and right sliding doors 11, 11 facing each other in the vertical direction, and detects pinch when the passenger 8 or the carried object 9 is pinched by the closing operation of the sliding doors 11, 11. When receiving a signal indicating that the content is pinched from the pinch detection sensor 2, the control device 14 controls the driving devices 13 and 13 to open the sliding doors 11 and 11. When receiving a signal indicating that the pinching has occurred from the pinching detection sensor 2, the control device 14 may issue an alarm signal for giving an alarm to a passenger such as a driver or a train driver. At this time, the sliding doors 11, 11 are opened by the operation of the occupant.

Fig. 2 is a cross-sectional view showing the pinching sensing sensor 2 in a natural state in which pinching does not occur. In FIG. 2, the direction A1 for ascending and descending and the closing direction A₂The parallel cross section (orthogonal cross section in the longitudinal direction) shows the sandwiching detection sensor 2. In fig. 2, the upper side of the drawing corresponds to the outside of the vehicle compartment (the platform 7 side) of the railway vehicle 1, and the lower side of the drawing corresponds to the inside of the vehicle compartment.

The pinch detection sensor 2 includes a door end rubber 3 attached to a front 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 cavity 30 therein, and the plurality of linear pressure-sensitive members 4 are housed in the cavity 30. In the present embodiment, three linear pressure-sensitive members 4 are housed in the cavity portion 30.

The door panel 111 has a fitting groove 111b formed in the vertical direction for attaching the door end rubber 3. The fitting groove 111b passes through an opening 111d between the pair of projecting pieces 111c and 111c facing each other and is opened in the closing direction.

The door end rubber 3 integrally has: a base portion 31 having a rectangular shape in the cross section shown in fig. 2; a cover portion 32 covering the three linear pressure-sensitive members 4 on the closing direction side of the cavity portion 30; a fitting portion 33 fitted into the fitting groove 111b of the door panel 111; and a connecting portion 34 connecting the base portion 31 and the fitting portion 33. The gate end rubber 3 is made of, for example, urethane rubber, EP rubber, silicone rubber, styrene butadiene rubber, chloroprene rubber, an olefin-based or styrene-based thermoplastic elastomer, or urethane resin, and is formed by extrusion molding.

The base portion 31 is disposed on the closing direction side of the pair of projecting pieces 111c, 111c of the door panel 111, and forms a cavity portion 30 with the cover 32. The cover portion 32 is curved in an arch shape (semicircular shape) protruding in the closing direction at the center portion in the ascending/descending direction, and both end portions are continuous with the base portion 31. The connection portion 34 is disposed in the opening 111d of the door panel 111.

The door end rubber 3 has a partition 35 between the base portion 31 and the cover portion 32, and the partition 35 partitions the cavity portion 30 into a plurality of (three in the present embodiment) housing spaces 301 to 303. Hereinafter, the three housing spaces 301 to 303 are referred to as first to third housing spaces 301, 302, 303. The first to third housing spaces 301, 302, 303 are arranged in the ascending and descending direction, the first housing space 301 is formed in the central portion in the ascending and descending direction, the second housing space 302 is formed outside the vehicle compartment than the first housing space 301, and the third housing space 303 is formed inside the vehicle compartment than the first housing space 301.

The partition 35 is composed of a first wall 351 that partitions the first housing space 301 and the second housing space 302, and a second wall 352 that partitions the first housing space 301 and the third housing space 303. The first wall portion 351 and the second wall portion 352 are parallel to each other and are disposed along the moving direction of the sliding door 11. One end of first wall 351 and second wall 352 is continuous with base portion 31, and the other end is continuous with cover portion 32. Thereby, the first to third housing spaces 301, 302, and 303 are divided by the partition 35 without a gap. The three linear pressure-sensitive members 4 are housed in the first to third housing spaces 301, 302, and 303, respectively.

In this way, in the present embodiment, the door end rubber 3 has the first to third housing spaces 301, 302, 303 housing the plurality of linear pressure-sensitive members 4, respectively, in the cavity portion 30, and the movement of the linear pressure-sensitive members 4 between the first to third housing spaces 301, 302, 303 is restricted by the partition portion 35.

In the cross section shown in fig. 2, the area of the hollow space excluding the portion where the linear pressure-sensitive member 4 is arranged is larger than the area of the portion where the linear pressure-sensitive member 4 is arranged, of the area occupied by the first housing space 301. That is, if the ratio of the hollow space of the first housing space 301 is defined as a space ratio, the space ratio is 50% or more. Thereby, the impact of the door end rubber 3 when colliding with the body of the passenger 8 is alleviated during the closing operation of the sliding doors 11, 11.

In the present embodiment, the space ratio of the second housing space 302 and the third housing space 303 is also 50% or more. However, the space ratios of the second housing space 302 and the third housing space 303 are lower than the space ratio of the first housing space. The desired range of the spatial ratio of the first storage space is 50% or more and 80% or less, and the desired range of the spatial ratio of the second storage space 302 and the third storage space 303 is 40% or more and 70% or less. This is because there are the following concerns: 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 cannot be stabilized within an appropriate range.

Fig. 3 (a) is a perspective view showing the linear pressure-sensitive member 4. Fig. 3 (b) is a cross-sectional view of the linear pressure-sensitive member 4 in a natural state in which the external force is not applied. Fig. 3 (c) is a cross-sectional view of the linear pressure-sensitive member 4 in a pressurized state in which an external force is applied.

The linear pressure-sensitive member 4 includes a tube 41 which is a tubular elastic body, and a plurality of conductor lines 42 which are 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 so as to be partially exposed, and the space 40 is formed in the center 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 such that it deforms when an external force is applied thereto and immediately returns when the external force disappears.

In a natural state where the tube 41 is not subjected to an external force, the plurality of conductor wires 42 are held so as not to contact each other with the space 40 therebetween. When an external force is applied to the tube 41, the tube 41 is elastically deformed to bring the plurality of conductor wires 42 into contact with each other. Each conductor wire 42 is formed by twisting a plurality of metal wires to form a metal strand 421, and covering the metal strand with a conductive covering layer 422. With this configuration, the linear pressure-sensitive member 4 can sense the external force from all directions in the radial direction of the pipe 41.

Fig. 4 is a circuit diagram showing an example of the circuit 5 for detecting the sandwiching of the slide door 11 by the linear pressure-sensitive member 4. The circuit 5 includes two conductor lines 42 of the linear pressure-sensitive member 4, and includes a power supply 51, a resistor 52 for detecting contact between ends of the two conductor lines 42, an ammeter 53 connected in series to the power supply 51, and a resistor 54 for limiting a current. The ammeter 53 has, for example, a current sensor such as a hall IC and an amplifier, and outputs a detection signal thereof to the control device 14.

In the electric circuit 5 configured as described above, when the linear pressure-sensitive member 4 is pressed and the conductor lines 42 are brought into contact with each other, the current detected by the ammeter 53 changes. The control device 14 recognizes that the pinching of the slide door 11 has occurred based on the change in the detection signal of the ammeter 53, and stops the driving device 13 or performs the reverse operation.

In addition, although fig. 4 shows only the circuit 5 corresponding to one linear pressure-sensitive member 4, in the present embodiment, the sandwiching detection sensor 2 has three linear pressure-sensitive members 4, and the circuit 5 is provided corresponding to each linear pressure-sensitive member 4, and outputs the detection signal of the ammeter 53 of each circuit 5 to the control device 14. When the control device 14 recognizes that any one of the linear pressure-sensitive members 4 is pressurized, the drive device 13 is stopped or reversed.

In the present embodiment, in order to reliably detect sandwiching even when an external force acts in a direction inclined with respect to the moving direction during the closing operation of the slide door 11, a plurality of linear pressure-sensitive members 4 are arranged at mutually different positions in the ascending/descending direction. That is, the plurality of linear pressure-sensitive members 4 are arranged in a direction intersecting the moving direction of the slide doors 11, 11 and the longitudinal direction (vertical direction) of the door end rubber 3, and are arranged so as not to overlap in the moving direction of the slide door 11. Hereinafter, a direction intersecting the moving direction of the sliding doors 11 and the longitudinal direction of the door end rubber 3 is referred to as an arrangement direction.

More specifically, one of the three linear pressure-sensitive members 4 housed in the first housing space 301 is disposed at the center portion in the arrangement direction of the cavity portions 30, and the other two linear pressure-sensitive members 4 are disposed on one side (the vehicle compartment outer side) and the other side (the vehicle compartment inner side) in the arrangement direction of the one linear pressure-sensitive member 4 housed in the first housing space 301. The linear pressure-sensitive member 4 disposed on one side is housed in the second housing space 302, and the linear pressure-sensitive member 4 disposed on the other side is housed in the third housing space 303.

The length of the first housing space 301 to the third housing space 303 in the width direction of the slide door 11 in the moving direction of the slide door 11 is larger than the diameter of the linear pressure-sensitive member 4, the linear pressure-sensitive member 4 housed in the first housing space 301 can move in the width direction of the slide door 11 in the first housing space 301, the linear pressure-sensitive member 4 housed in the second housing space 302 can move in the width direction of the slide door 11 in the second housing space 302, and the linear pressure-sensitive member 4 housed in the third housing space 303 can move in the width direction of the slide door 11 in the third housing space 303.

With this structure of the door end rubber 3, even if a part of the body of the passenger 8 is sandwiched between the sliding doors 11, 11 during the closing operation of the sliding doors 11, the passenger 8 feels less pain with increased cushioning due to the space from the first accommodation space 301 to the third accommodation space 303 of the door end rubber 3. In particular, the length of the first housing space 301 located at the center in the arrangement direction in the width direction of the slide door 11 is longer than the length of the second housing space 302 and the length of the third housing space 303, so that the impact when the front end portion of the cover portion 32 in the closing direction collides with the passenger 8 is greatly alleviated. In the present embodiment, the length of the first housing space 301 in the width direction of the slide door 11 is 2 times or more the diameter of the linear pressure-sensitive member 4.

Fig. 5 shows the following states: during the closing operation of the slide door 11, the front end portion of the cover portion 32 of the door end rubber 3 in the closing direction collides with the part 81 of the body of the passenger 8, and the linear pressure-sensitive member 4 accommodated in the first accommodation space 301 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 to bring the two conductor wires 42 into contact with each other.

Fig. 6 shows the railway vehicle 1 along arrow a in a state where the rope-like member 92 of the carried article 9 of the passenger 8 getting off to the outside of the vehicle compartment is sandwiched between the left and right slide doors 11, 11 with the body member 91 remaining inside the vehicle compartment₃The illustrated traveling direction starts to be out of the way.

In this state, the linear pressure-sensitive member 4 accommodated in the second accommodation space 302 of the pinch detection sensor 2 corresponding to the slide door 11 on the rear side in the traveling direction, out of the left and right slide doors 11, is pressed, and the two conductor wires 42 are brought into contact with each other. Thereby detecting pinch-in. That is, in the pinch detection sensor 2 of the present embodiment, even if the cord-like member 92 has a thickness that cannot detect pinch between the left and right slide doors 11, external force acts in a direction inclined with respect to the closing direction of the slide door 11 as shown in fig. 6, so that pinch can be detected.

Although not shown, the following may be the case: when the railway vehicle 1 starts to run out with the string-like member 92 sandwiched between the left and right sliding doors 11, the cover portion 32 of the door end rubber 3 is pulled toward the vehicle cabin outer side, and the linear pressure-sensitive member 4 accommodated in the third accommodation space 303 is pressurized, so that the two conductor wires 42 are brought into contact with each other. Further, even when the passenger 8 tries to get out of the vehicle compartment side to the vehicle compartment side and collides with the door end rubber 3 during the closing operation of the slide doors 11 and 11, the linear pressure-sensitive member 4 housed in the third housing space 303 can be pressurized. Similarly, even when the passenger 8 attempts to enter from the outside of the vehicle compartment to the inside of the vehicle compartment and collide with the door end rubber 3 during the closing operation of the slide doors 11, the linear pressure-sensitive member 4 housed in the second housing space 302 can be pressurized.

When the pinching is detected by the pinching detection sensor 2 after the departure of the railway vehicle 1, the opening operation of the slide doors 11 and 11 is performed by a manual operation by the driver who has received the alarm or automatically and quickly stopping the railway vehicle 1 in the case of the automatic operation.

(Effect of the first embodiment)

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

(1) Since the cavity portion 30 is divided into the first accommodation space 301 to the third accommodation space 303 by the partition portion 35, the movement of the plurality of linear pressure-sensitive members 4 in the cavity portion 30 of the door end rubber 3 is restricted, and the plurality of linear pressure-sensitive members 4 can be positioned at positions that receive external forces from various directions. This allows detection of pinching even when an external force acts in a direction inclined with respect to the moving direction during the closing operation of the slide door 11.

(2) Since the plurality of linear pressure-sensitive members 4 are not overlapped in the moving direction of the slide door 11 and are arranged at positions different from each other in the arrangement direction, the angular range in which the pressure can be detected by the sandwiching detection sensor 2 is widened. In the present embodiment, the linear pressure-sensitive members 4 arranged at the center in the arrangement direction detect pinching in the closing direction of the slide door 11 that occurs frequently, and the other two linear pressure-sensitive members 4 detect pinching in a direction inclined with respect to the closing direction of the slide door 11, so that pinching in various modes can be detected reliably.

(3) Since the first to third housing spaces 301, 302, 303 are divided by the partition portion 35 without a gap, the linear pressure-sensitive members 4 do not move between the first to third housing spaces 301, 302, 303 regardless of the deformation of the door end rubber 3, 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 sectional view showing a pinch detection sensor 2A of 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 (the cover portion 32 side) at the center portion in the arrangement direction. The protrusion 311 is formed across the first to third housing spaces 301 to 303, and protrudes maximally toward the first housing space 301.

According to the pinching detection sensor 2A of the second embodiment, since the length of the first housing space 301 is shorter than that of the first embodiment, even if the amount of deformation of the cover portion 32 is small, the two conductor wires 42 of the linear pressure-sensitive member 4 housed in the first housing space 301 come into contact with each other, and pinching can be detected even with a small external force. 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 stored in the second storage space 302 or the third storage space 303 is pressed by the protrusion 311, and the two conductor wires 42 come into contact with each other, so that the sandwiching in this direction can be detected with a small external force.

Third embodiment

Fig. 8 is a sectional view showing a pinching detection sensor 2B according to a third embodiment. The detection switch 2B is provided with a protrusion 311 protruding in the closing direction side at the center portion in the array direction in the base portion 31, as in the detection switch 2A of the second embodiment, but the shape of the protrusion 311 is formed in a trapezoidal shape, unlike the second embodiment. The width of the protrusions 311 in the arrangement direction is larger as it is farther from the top surface of the first storage space 301, and the distance between the both side surfaces of the second storage space 302 and the third storage space 303 is longer. In the sandwiching detection sensor 2B, the first wall portion 351 and the second wall portion 352 extend from the corner portion between the top surface and the both side surfaces of the protrusion 311 so as to be inclined away from each other with respect to the moving direction of the slide door 11.

According to the third embodiment, as in the second embodiment, the pinching can be detected even with a small external force.

Fourth embodiment

Next, a fourth embodiment of the present invention will be described with reference to fig. 9.

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

According to the present embodiment, it is also possible to detect pinching in which an external force acts from a direction oblique to the moving direction during the closing operation of the slide door 11. Further, since the number of linear pressure-sensitive members 4 can be reduced, cost reduction can be achieved as compared with the first to third embodiments.

Fifth embodiment

Next, a fifth embodiment of the present invention will be described with reference to fig. 10. Fig. 10 is a sectional view showing a pinch detection sensor 2D of the fifth embodiment. In the first to fourth embodiments, the case where the first to third housing spaces 301 to 303 are divided by the partition portion 35 without a gap has been described, but in the pinching detection sensor 2D of the present embodiment, the first to third housing spaces 301 to 303 are divided by the gap S₁、S₂And (4) communicating. The gap S₁、S₂Is smaller than the diameter of the linear pressure-sensitive member 4, and the movement of the linear pressure-sensitive member 4 between the first accommodation space 301 and the third accommodation space 303 is restricted by the partition 35, as in the above-described embodiments.

According to the fifth embodiment, the plurality of linear pressure-sensitive members 4 can be positioned at the positions where external forces from various directions are applied, and the structure of the die used for extrusion molding of the door end rubber 3 can be simplified, thereby facilitating the manufacture.

Sixth embodiment

Next, a sixth embodiment of the present invention will be described with reference to fig. 11. Fig. 11 is a sectional view showing a pinching detection sensor 2E of the sixth embodiment. In the pinch detection sensor 2E, the same protrusion 311 as that of the second embodiment is provided on the base portion 31 of the door end rubber 3 of the pinch detection sensor 2D of the fifth embodiment.

According to the sixth embodiment, in addition to the effects of the fifth embodiment, as in the second embodiment, the pinching can be detected with a small external force.

Seventh embodiment

Next, a seventh embodiment of the present invention will be described with reference to fig. 12. Fig. 12 is a sectional view showing a pinching detection sensor 2F of the seventh embodiment. In the pinch detection sensor 2F, the base portion 31 of the door end rubber 3 is provided with a protrusion 311, and a partition portion 35 is provided at a distal end portion of the protrusion 311. The facing surface of the partition 35 facing the cover 32 is formed of an arc surface having a curvature larger than that of the outer peripheral surface of the linear pressure-sensitive member 4, and has a first corner portion 354 and a second corner portion 355 at both ends in the arrangement direction. Gaps S are formed between the first and second corners 354 and 355 and the cover 32₃、S₄. Gap S₃、S₄Is smaller than the diameter of the linear pressure-sensitive member 4, and restricts the movement of the linear pressure-sensitive member 4 between the first accommodation space 301 and the third accommodation space 303.

According to the seventh embodiment, the pinching can be detected with a small external force by the protrusion 311, and the first accommodation space 301 to the third accommodation space 303 pass through the gap S₃、S₄Since the gate end rubber 3 is communicated with the gate end rubber, the manufacture of the gate end rubber is facilitated.

Eighth embodiment

Next, an eighth embodiment of the present invention will be described with reference to fig. 13. Fig. 13 is a sectional view showing a pinching detection sensor 2G according to the eighth embodiment. In the pinching detection sensor 2G, the cover portion 32 of the door end rubber 3 has an inner protrusion 321 that protrudes toward the base portion 31 side toward the linear pressure-sensitive member 4 housed in the first housing space 301. A first wall 351 separating the first housing space 301 from the second housing space 302 and a second wall 352 separating the first housing space 301 from the third housing space 303 are provided between the base portion 31 and the inner protrusion 321 of the cover portion 32.

According to the eighth embodiment, even if the amount of deformation of the cover portion 32 is small as compared with the first embodiment, the two conductor wires 42 of the linear pressure-sensitive member 4 housed in the first housing space 301 come into contact with each other, and the sandwiching in the closing direction of the slide door 11 can be detected with a small external force.

Ninth embodiment

Next, a ninth embodiment of the present invention will be described with reference to fig. 14. In the first to eighth embodiments, the pinching sensing sensors having the same structure are used for the left and right sliding doors 11, but in the present embodiment, the pinching sensing sensor attached to one sliding door 11 is different from the pinching sensing sensor attached to the other sliding door 11 in the left and right sliding doors 11, 11. Hereinafter, the pinch detection sensor attached to one of the slide doors 11 will be described as the one-side pinch detection sensor 2H, and the pinch detection sensor attached to the other slide door 11 will be described as the other-side pinch detection sensor 2I.

The one-side pinching detection sensor 2H is formed by further providing an outer protrusion 322 on the cover portion 32 of the pinching detection sensor 2G of the eighth embodiment. The outer protrusion 232 protrudes from the center of the cover 32 in the arrangement direction toward the other side, on the opposite side of the cavity 30 with the detection sensor 2I interposed therebetween.

The other-side pinching detection sensor 2I is formed by deforming the pinching detection sensor 2C according to the fourth embodiment, and a fitting recess 300 into which the outer protrusion 322 of the one-side pinching detection sensor 2H is fitted is recessed in the central portion in the arrangement direction of the cover portions 32. The fitting recess 300 is formed in a range from the cover 32 to the partition 353. In the door end rubber 3 sandwiching the detection sensor 2I on the other side, the thickness of the partition 353 dividing the cavity portion 30 into the first housing space 304 and the second housing space 305 in the arrangement direction is formed so that at least the end on the closing direction side is larger than the width of the fitting recess 300 in the arrangement direction.

According to the ninth embodiment, when the passenger 8 or the carried object 9 thereof is pinched by the left and right slide doors 11, the pressure caused by the pinching is easily transmitted from the outer protrusion 322 of the one-side pinching detection sensor 2H to the linear pressure-sensitive member 4 housed in the first housing space 301, and the pinching can be reliably detected. Further, by fitting the outer protrusion 322 of the one-side sandwiching detection sensor 2H into the fitting recess 300 of the other-side sandwiching detection sensor 2I, the air tightness of the interior of the railway vehicle 1 can be improved, and the rattling of the slide doors 11, 11 can be suppressed.

(summary of the embodiment)

Next, the technical ideas obtained from the above-described embodiments will be described with reference to the symbols and the like in the embodiments. Note that the reference numerals in the following description do not limit the components in the claims to those specifically shown in the embodiments.

[1]A pinch detection sensor 2, 2A to 2G, which is a pinch detection sensor 2 for detecting pinch during a closing operation of a slide door 11, includes: a door end rubber 3 having a cavity 30 therein and attached to the sliding door 11 in a closing movement direction A₂The front end portion of (a); and a plurality of linear pressure-sensitive members 4 housed in the cavity 30, and formed by disposing a plurality of conductor wires 42 so as to be separated from each other inside a tubular elastic body (tube 41), wherein the door end rubber 3 has a plurality of housing spaces 301 to 303 for housing the plurality of linear pressure-sensitive members 4 in the cavity 30, respectively, and movement of the linear pressure-sensitive members 4 between the plurality of housing spaces 301 to 303 is regulated by a partition 35.

[2] In addition to the pinch detection sensors 2, 2A to 2G described in the above [1], the plurality of linear pressure-sensitive members 4 are arranged in an arrangement direction intersecting a moving direction of the slide door 11 and a longitudinal direction of the door end rubber 3, and are arranged so as not to overlap in the moving direction of the slide door 11.

[3]In the above [2]]The sandwiching detection sensors 2, 2A, 2B, 2D to 2G described above further include three linear pressure-sensitive members 4, and among the three linear pressure-sensitive members 4, one linear pressure-sensitive member 4 is disposed in a central portion of the cavity 30 in the arrangement direction, and the other two linear pressure-sensitive members 4 are disposed in the arrangement direction a of the one linear pressure-sensitive member 4₁One side and the other side.

[4]In the above [2]]Or [3 ]]In addition to the pinching detection sensors 2A, 2B, 2E, and 2F, the door end rubber 3 is integrally provided in the closing movement direction a with respect to the cavity 30₂A cover part 32 for laterally covering the plurality of linear pressure-sensitive members 4, and a cover part formed between the cover part 32 and the linear pressure-sensitive membersThe cover part 32 of the base part 31 of the cavity part 30 is bent in the direction A of the closing movement at the center part of the arrangement direction₂A protruding arch shape, the base part 31 having a central part in the arrangement direction and extending in the closing movement direction A₂A protruding protrusion 311.

[5]In the above-mentioned [3]In the pinch detection sensor 2G, the door end rubber 3 is integrally provided in the closing movement direction a with respect to the cavity 30₂A cover part 32 for laterally covering the plurality of linear pressure-sensitive members 4, and a base part 31 for forming the cavity part 30 between the cover part 32, wherein the cover part 32 is bent in the direction A of the closing movement at the center part of the arrangement direction₂A convex arch shape, and an inner protrusion 321 protruding toward the base portion 31 side toward the one linear pressure-sensitive member 4.

[6]In the above-mentioned [3]In the pinch detection sensor 2H, the door end rubber 3 is integrally provided in the closing movement direction a with respect to the cavity 30₂A cover part 32 for laterally covering the plurality of linear pressure-sensitive members 4, and a base part 31 for forming the cavity part 30 between the cover part 32, wherein the cover part 32 is bent in the closing movement direction A at the central part of the arrangement direction₂A convex arch shape, and has an outer protrusion 322 protruding to the opposite side of the cavity portion 30 side.

[7] In addition to the pinching detection sensors 2, 2A to 2C, 2G according to any of the above items [1] to [6], the plurality of housing spaces 301 to 303 are divided by the partition 35 without a gap.

The embodiments of the present invention have been described above, but the embodiments described above do not limit the invention of the claims. Note that all combinations of features described in the embodiments are not necessarily required to solve the problem of the invention.

The present invention can be modified as appropriate without departing from the scope of the invention. For example, in the above-described embodiment, the case where the present invention is applied to the slide door 11 of the railway vehicle 1 for opening and closing the entrance 10 has been described, but the present invention is not limited to this, and for example, the present invention may be applied to a slide door, a so-called platform door, which is provided in the platform 7 and is opened after the railway vehicle 1 stops and closed before the railway vehicle 1 departs.