JP6692576B2 - Short circuit structure of detector - Google Patents

Description

  The present invention relates to a short-circuit structure of a detection device that electrically short-circuits the detection device.

In railway vehicles, the conductor operates a conductor switch that operates the opening and closing of the passenger car door to operate a door closing device that opens and closes the passenger car door. When the door is closed, the trapping of the inclusion (foreign matter) at the tip (door tip) of the side sliding door is detected by the trapping detector. In the conventional door closing device, for example, as shown in FIG. 18A, when the side sliding doors 106R and 106L are normally closed, the door tip rubbers 107R and 107L are in contact with each other, and the side sliding doors 106R and 106L are predetermined. Stop at position. On the other hand, in the conventional door closing device, as shown in FIG. 18B, when the side sliding doors 106R and 106L are closed and a relatively large inclusion O ₁ is sandwiched between the door tip rubbers 107R and 107L. Since the current value flowing through the door closing machine that drives the side sliding doors 106R and 106L to open and close changes, the door pinching detection device detects the pinching of the inclusion O ₁ and restarts the side sliding doors 106R and 106L. However, in the conventional door closing device, as shown in FIG. 18 (C), when the side sliding doors 106R and 106L are closed, when a relatively small inclusion O ₂ is sandwiched between the door tip rubbers 107R and 107L. , the side sliding doors 106R, 106L are side sliding doors 106R stops reaches a predetermined position, the 106L will determine the Tohasami sensing device and completely closed, the pinch Tohasami sensing device of inclusions O ₂ detection Without, the side sliding doors 106R and 106L are not opened and closed again. Therefore, when the relatively small inclusions O ₂ as shown in FIG. 18C are sandwiched between the door tip rubbers 107R and 107L, the side sliding doors 106R and 106L are completely closed. Even then, a door pinching detection device capable of detecting the pinching of the inclusion O ₂ has been proposed.

  A conventional door pinch detection device is a door tip rubber attached to a door tip of a side sliding door, a pressure sensor that detects a pressure in a hollow portion in the door tip rubber, and a pressure signal output by the pressure sensor on the door side. A communication unit that communicates from the vehicle to the vehicle body side is provided (see, for example, Patent Document 1). In such a conventional door pinch detection device, when the side sliding door is closed and the door tip rubber pinches the inclusion to deform the door tip rubber, the pressure sensor detects the pressure in the hollow portion inside the door tip rubber. The pressure signal output from the pressure sensor is transmitted from the door side to the vehicle body side through the communication unit. In this conventional door pinch detection device, the secondary side coil on the door side and the primary side coil on the vehicle body face each other to form a communication unit, and a pressure signal is generated by electromagnetically coupling the secondary coil and the primary coil. It is transmitted from the door side to the car body side.

JP-A-2008-008121

  In the door pinch detection device, instead of the method of detecting the pressure of the hollow part inside the door tip rubber with a pressure sensor, a piezoelectric type that detects the door pinch by converting the mechanical displacement of the door tip rubber into an electric signal by the piezoelectric effect A method of detecting with a pressure sensor has been proposed. Further, in the door pinch detection device, while the side sliding door moving from the open position to the closed position is located within the predetermined section, the door side contact part and the vehicle body side contact part are maintained in the connected state, and the piezoelectric pressure There has been proposed a transmission device that transmits an electric signal output from a sensor from a door side to a vehicle body side. In such a door pinch detection device, even if the piezoelectric pressure sensor does not detect the door pinch while the side sliding door is stopped at the open position for a relatively long time, Charge may accumulate. Therefore, in such a door pinch detection device, when the door tip rubber pinches the inclusion while the side sliding door moves in the predetermined section, an electric signal due to the electric charge accumulated in the piezoelectric type pressure sensor causes There is a problem in that the pressure signal output from the die pressure sensor is mixed as noise and the detection accuracy of the door pinch is lowered.

  An object of the present invention is to provide a short-circuit structure of a detection device that can improve the detection accuracy of the detection device with a simple structure and can eliminate the accumulated charge of the detection device.

The present invention solves the above-mentioned problems by the following solution means.
It should be noted that although description is given with reference numerals corresponding to the embodiment of the present invention, the present invention is not limited to this embodiment.
The invention according to claim 1, 4-6, 8 and 14-17, the detection device (8R, 8L) and a short-circuit structure of electrically shorting detecting device, the detecting The device transmits a detection signal from the movable body (6R, 6L) side to the fixed body (5a) side when the movable body side contact portion (15A, 15B) and the fixed body side contact portion (17A, 17B) are in contact with each other. output, the when the sensing device is not the detecting operation is switched between terminals of the detection device (8d~8e) is short-circuited, the when the sensing device is a sensing operation, the insulating state between the terminals of the detection device The switching unit includes a switching unit (21) for switching , the switching unit includes a switch unit (21a) for opening and closing the terminals of the detection device, and a biasing unit (21c) for biasing the switch unit. Is the movable body side contact portion and the fixed When the side contact portion is not in contact, the terminals of the detection device are closed by the urging force acting from the urging portion, and when the movable body side contact portion and the fixed body side contact portion are in contact, This is a short-circuit structure (20) for a detection device, characterized in that the terminals of the detection device are opened by a pressing force acting from a fixed body side contact portion .

According to a second aspect of the invention, in the short-circuit structure of the detection device according to the first aspect , as shown in FIGS. 14 to 17, the urging portion applies an urging force to the movable body side contact portion or the fixed body side contact portion. By operating the movable body-side contact portion and the fixed body-side contact portion in a contact state while the movable body is located within the predetermined section (L ₄ ). It is a short circuit structure.

The invention of claim 3 is, as shown in FIGS. 10 to 13 , a short-circuit structure of a detection device that electrically short-circuits the detection device (8R, 8L), wherein the detection device is a movable body side contact portion (15A). , 15B) and the fixed body side contact parts (17A, 17B) are in contact with each other, a detection signal is output from the movable body (6R, 6L) side to the fixed body (5a) side, and the detection device performs the detection operation. When not performing, the terminals (8d to 8e) of the detection device are switched to a short-circuited state, and when the detection device performs a detection operation, a switching unit (21) that switches the terminals of the detection device to an insulated state is provided, The switching unit includes a switch unit (21d) that opens and closes terminals of the detection device, and a pressing unit (21f) that presses the switch unit, and the switch unit includes the movable body side contact unit and the fixed body side. Close to the contact If not, the terminals of the detection device are closed by the weight of the switch portion, and when the movable body side contact portion and the fixed body side contact portion are close to each other, the detection device is caused by the pressing force applied from the pressing portion. It is a short-circuit structure (20) for a detection device, characterized in that the terminals are opened .

According to a fourth aspect of the invention, in the short-circuit structure of the detection device according to any one of the first to third aspects, the detection device converts the mechanical displacement into an electric signal by a piezoelectric effect. It is a short-circuit structure of a detection device, which is provided with a portion (8a).

According to a fifth aspect of the present invention, in the short-circuit structure of the detection device according to any one of the first to fourth aspects, as shown in FIG. 3A, in the detection device, the movable body reciprocates. When it is a movable door (6R, 6L), it is a door pinch detection device (8R, 8L) that detects the trapping of inclusions (O ₂ ) in the tip portion (7R, 7L) of this door. It is a short-circuit structure of the characteristic detection device.

According to a sixth aspect of the present invention, in the short-circuit structure of the detection device according to any one of the first to fifth aspects, as shown in FIGS. 4 to 8 and FIGS. When the movable body side contact portion and the fixed body side contact portion are not in contact with each other, the terminals of the detection device are switched to a short circuit state, and when the movable body side contact portion and the fixed body side contact portion are in contact with each other. The short-circuit structure of the detection device is characterized in that the terminals of the detection device are switched to an insulated state.

  According to the present invention, it is possible to improve the detection accuracy of the detection device with a simple structure, and it is possible to eliminate the accumulated charge of the detection device.

It is a side view which shows typically the state which the side sliding door of the vehicle provided with the short circuit structure of the detection apparatus which concerns on 1st Embodiment of this invention opened. It is a side view which shows typically the state which the side sliding door of the vehicle provided with the short circuit structure of the detection apparatus which concerns on 1st Embodiment of this invention closed. It is a cross-sectional view which shows typically the front-end | tip part of the side sliding door of the vehicle provided with the short circuit structure of the detection apparatus which concerns on 1st Embodiment of this invention, (A) is a state where the inclusion object was pinched by the side sliding door. FIG. 3B is a horizontal cross-sectional view schematically showing a state in which inclusions are not sandwiched between the side sliding doors. It is a longitudinal cross-sectional view when the switching part of the short-circuit structure of the detection device according to the first exemplary embodiment of the present invention is switched to the short-circuited state. It is a longitudinal cross-sectional view immediately after the switching part of the short-circuit structure of the detection device according to the first exemplary embodiment of the present invention is switched from the short-circuited state to the insulated state. It is a longitudinal cross-sectional view when the short circuit structure of the detection device according to the first embodiment of the present invention is switched to an insulated state. It is a circuit diagram which shows typically the short circuit structure of the detection apparatus which concerns on 1st Embodiment of this invention, (A) is a circuit diagram when it switches to a short circuit state, (B) when it switches to an insulation state. FIG. It is a longitudinal cross-sectional view for explaining the operation of the short-circuit structure of the detection device according to the first embodiment of the present invention, (A) is a vertical cross-sectional view when switching to the short-circuit state, (B) is a short-circuit state. Is a vertical cross-sectional view immediately after the switch to the insulated state, (C) is a vertical cross-sectional view when the switch is switched to the insulated state and door jamming detection is enabled, and (D) is the side sliding door stopped at the stop position. FIG. It is a graph which shows the test result for verifying the influence by the opening time of the side sliding door by the short circuit structure of the detection apparatus which concerns on 1st Embodiment of this invention, (A) did not short-circuit during the opening time of a side sliding door. And (B) is a graph when a short circuit occurs during the opening time of the side sliding door. It is sectional drawing when the switching part of the short circuit structure of the detection apparatus which concerns on 2nd Embodiment of this invention is switched to a short circuit state, (A) is a longitudinal sectional view, (B) is X- of (A). It is sectional drawing which shows the state cut | disconnected by the XB line. It is sectional drawing immediately after the switching part of the short circuit structure of the detection apparatus which concerns on 2nd Embodiment of this invention switches from a short circuit state to an insulation state, (A) is a longitudinal sectional view, (B) is (A). FIG. 6 is a cross-sectional view showing a state of being cut along line XI-XIB of FIG. It is sectional drawing when the switching part of the short circuit structure of the detection apparatus which concerns on 2nd Embodiment of this invention switches to an insulated state, (A) is a longitudinal sectional view, (B) is XII- of (A). It is sectional drawing which shows the state cut | disconnected by the XIIB line. It is a longitudinal cross-sectional view for explaining the operation of the short-circuit structure of the detection device according to the second embodiment of the present invention, (A) is a vertical cross-sectional view when switching to a short-circuit state, (B) is a short-circuit state. Is a vertical cross-sectional view immediately after the switch to the insulated state, (C) is a vertical cross-sectional view when the switch is switched to the insulated state and door jamming detection is enabled, and (D) is the side sliding door stopped at the stop position. FIG. It is a longitudinal cross-sectional view when the switching part of the short-circuit structure of the detection device according to the third exemplary embodiment of the present invention is switched to the short-circuited state. It is a longitudinal cross-sectional view just after the switching part of the short-circuit structure of the detection device which concerns on 3rd Embodiment of this invention switches from a short circuit state to an insulation state. It is a longitudinal cross-sectional view when the switching part of the short circuit structure of the detection apparatus according to the third embodiment of the present invention is switched to the insulated state. It is a longitudinal cross-sectional view for explaining the operation of the short-circuit structure of the detection device according to the third embodiment of the present invention, (A) is a vertical cross-sectional view when switching to a short-circuit state, (B) is a short-circuit state. Is a vertical cross-sectional view immediately after the switch to the insulated state, (C) is a vertical cross-sectional view when the switch is switched to the insulated state and door jamming detection is enabled, and (D) is the side sliding door stopped at the stop position. FIG. It is a schematic diagram for demonstrating operation | movement of the conventional door closing device, (A) is a top view which shows the state which the side sliding door became normal, (B) (C) has an interposition thing in the side sliding door. It is a top view showing the state where it was opened.

(First embodiment)
Hereinafter, a first embodiment of the present invention will be described in detail with reference to the drawings.
In addition, in FIG. 1 and FIG. 2, in order to facilitate understanding of the invention, two door side contact portions 15A and 15B and fixed body side contact portions 17A and 17B shown in FIGS. 15A and the stationary body side contact portion 17A are shown in a simplified manner.
The track 1 shown in FIGS. 1 and 2 is a passage (track) through which the vehicle 2 travels. The track 1 supports left and right wheels 4a of the vehicle 2 and guides the left and right rails 1a on which the vehicle 2 travels. And so on. The vehicle 2 is a moving body that travels along the track 1. The vehicle 2 is, for example, a railway vehicle such as a train, a railcar, or a passenger car. The vehicle 2 includes a vehicle body 3 and a carriage 4. The vehicle body 3 is a structure for loading and transporting passengers. The carriage 4 is a traveling device (running device) that supports the vehicle body 3 and travels on the track 1, and includes wheels 4a that make rolling contact with the rail 1a.

  The side entrance / exit 5 shown in FIG. 1 is an entrance / exit used when passengers get on and off. The side entrance / exit 5 is formed on a side surface that constitutes a side structure (side structure) of the vehicle body 3. For example, one side entrance is provided for a limited express vehicle, three side entrances are provided for a suburban vehicle, and four side entrances are provided for a commuting type vehicle. As shown in FIGS. 1 and 2, the side entrance / exit 5 is provided with a chassis 5a and the like. The casing 5a is a portion that constitutes the upper portion of the side entrance / exit 5, and is a fixed structure (fixed body) fixed to the vehicle 2 side.

The side sliding doors 6R and 6L shown in FIGS. 1 and 2 are side doors that can reciprocate between the closed position P ₁ and the open position P ₂ . The side sliding doors 6R and 6L are two sliding doors that open and close in opposite directions, and open and close the side doorway 5. The side sliding doors 6R and 6L are housed in the door pocket of the vehicle body 3 when the side doorway 5 is opened. The side sliding doors 6R and 6L are provided with a door plate 6a attached to the frame of the side sliding doors 6R and 6L to form the surface of the side sliding doors 6R and 6L, and a glass window 6b for illuminating the inside of the vehicle and for the passenger to monitor the outside. ing.

The door tip rubbers 7R and 7L shown in FIGS. 1 to 3 are rubbers that form the tip portions of the side sliding doors 6R and 6L. The door tip rubbers 7R and 7L alleviate the impact generated when the inclusions O ₁ and O ₂ are sandwiched between the door tip rubbers 7R and 7L, and when the side sliding doors 6R and 6L are closed. It has a function of closely contacting each other so that no gap is formed between the rubber tips 7R and 7L. As shown in FIG. 3, the door tip rubbers 7R and 7L are hollow members having a substantially U-shaped cross section when cut along a horizontal plane, and as shown in FIGS. 1 and 2, the height of the side sliding doors 6R and 6L is high. It is attached continuously along the direction. As shown in FIG. 3 (B), when the side sliding doors 6R and 6L are closed, the door tip rubbers 7R and 7L have a gap between the tip end portion of the door tip rubber 7R and the tip end portion of the door tip rubber 7L. It adheres in a slightly elastically deformed state so that it is not formed. The door end rubbers 7R and 7L are formed, for example, by coating the surface of a natural rubber, which is a base material, with chloroprene rubber having high durability.

The door pinching detection devices 8R and 8L shown in FIGS. 1 to 3 are devices that detect the pinching of the inclusion O _{2 in} the door tip rubbers 7R and 7L. As shown in FIG. 3 (A), the door pinch detection devices 8R and 8L detect the pressure acting on the door tip rubbers 7R and 7L when the side sliding doors 6R and 6L are closed to detect the door tip rubber 7R. The inclusion of the inclusion O ₂ between the door and the rubber tip 7L is detected. As shown in FIGS. 1 and 2, the door pinch detection devices 8R and 8L are continuously attached to the inside of the door tip rubbers 7R and 7L along the length direction of the door tip rubbers 7R and 7L. The door pinch detection device 8R is arranged on the door tip rubber 7R side, and the door pinch detection device 8L is arranged on the door tip rubber 7L side. As shown in FIGS. 1 and 2, the door pinch detection devices 8R and 8L are arranged between the side sliding doors 6R and 6L that reciprocate between the closed position P ₁ and the open position P ₂ and the door 5a, as shown in FIG. When the door side contact parts 15A, 15B and the fixed body side contact parts 17A, 17B are in contact with each other, as shown in (4), the door pinch detection signal is transmitted from the side sliding doors 6R, 6L side to the side wall 5a side. As shown in FIG. 3, the door pinch detectors 8R and 8L include piezoelectric rubber portions 8a, electrode portions 8b and 8c, terminals 8d and 8e, and the like.

  The piezoelectric rubber portion 8a shown in FIG. 3 is a portion that outputs an electric signal according to the pressure acting on the door tip rubbers 7R and 7L. The piezoelectric rubber portion 8a is a mechanical-electrical conversion portion that converts mechanical displacement into an electric signal by the piezoelectric effect. The piezoelectric rubber portion 8a converts elastic deformation (mechanical displacement) of the door tip rubbers 7R and 7L caused by pressure acting on the door tip rubbers 7R and 7L into an electric signal by a piezoelectric effect. The piezoelectric rubber portion 8a is a piezoelectric material having elasticity in which a piezoelectric material is dispersed in rubber, and is a piezoelectric pressure sensor that generates electric power according to the magnitude of pressure. The piezoelectric rubber portion 8a includes, for example, a mixing step of mixing a rubber material such as nitrile rubber and a piezoelectric ceramic powder such as lead zirconate titanate (trade name: PZT), and a vulcanization that vulcanizes the mixture after the mixing step. And a polarization step of applying a voltage to both ends of the mixture after the vulcanization step to polarize the mixture. As shown in FIGS. 1, 2, 6, and 7 (B), the piezoelectric rubber portion 8a sends an electric signal (door pinch detection signal) corresponding to the pressure acting on the door tip rubber 7R, 7L to the signal line. The data is transmitted to the door pinch determination device 10 through 9R, 9L, 11R, 11L and the signal transmission devices 14R, 14L.

  The electrode portions 8b and 8c shown in FIG. 3 are contact portions electrically connected to the piezoelectric rubber portion 8a. The electrode portions 8b and 8c are respectively laminated on both surfaces of the piezoelectric rubber portion 8a, and are joined so as to cover the entire area of both surfaces of the piezoelectric rubber portion 8a. The electrode portions 8b and 8c are formed, for example, by vulcanizing and adhering both surfaces of each piezoelectric rubber portion 8a so as to be parallel to each other, or by depositing a conductive material such as metal, metal oxide or carbon, and silk screen printing. Alternatively, it may be formed on both surfaces of the piezoelectric rubber portion 8a by a method such as ion sputtering, or may be formed by laminating a resin containing a conductive material or a conductive resin such as a conductive polymer in a multilayer structure on both surfaces of the piezoelectric rubber portion 8a. .. For example, the electrode portion 8b is an electrode on the ground side (minus side), and the electrode portion 8c is an electrode on the non-ground side (plus side).

  The terminals 8d and 8e are portions that electrically connect the signal lines 9R and 9L and the electrode portions 8b and 8c. The terminals 8d and 8e can be connected to the signal lines 9R and 9L by detachably fitting the connector parts attached to the electrode parts 8b and 8c and the connector parts attached to the signal lines 9R and 9L, respectively. The electrodes 8b and 8c are electrically connected. For example, the terminal 8d is a ground side (minus side) terminal, and the terminal 8e is a non-ground side (plus side) terminal.

  The signal lines 9R and 9L shown in FIGS. 1 to 3 are electric wires that transmit the door-nip detection signal from the door-nip detection devices 8R and 8L to the door-side contact portions 15A and 15B of the signal transmission devices 14R and 14L. The signal lines 9R and 9L have a surface of a conductive material covered with an insulating material, and are wired along the upper ends of the side sliding doors 6R and 6L as shown in FIGS. 1 and 2. As shown in FIG. 3, one end of each of the signal lines 9R and 9L is connected to the terminals 8d and 8e of the door pinch detectors 8R and 8L, and the other end thereof is connected to each other as shown in FIGS. 4 to 7. Are connected to the door side contact portions 15A and 15B of the signal transmission devices 14R and 14L.

The door pinch determination device 10 illustrated in FIGS. 1 and 2 is a device that determines whether or not the inclusion O ₂ is pinched in the side sliding doors 6R and 6L. The door pinch determination device 10 determines whether or not the inclusion O ₂ is pinched between the door tip rubbers 7R and 7L based on the detection results of the door pinch detection devices 8R and 8L. The door pinch determination device 10 receives the door pinch detection signals output by the door pinch detection devices 8R and 8L, and determines whether the level of the door pinch detection signal exceeds a predetermined value (threshold value). When the level of the door pinch detection signal exceeds a predetermined value, the door pinch determination device 10 determines that the inclusion O ₂ is pinched between the door tip rubbers 7R and 7L as shown in FIG. 3 (A). .. On the other hand, when the level of the door pinch detection signal is equal to or lower than the predetermined value, the door pinch determination device 10 determines that the inclusion O ₂ is not pinched between the door tip rubbers 7R and 7L as shown in FIG. 3 (B). judge. The door pinch determination device 10 outputs a door pinch determination signal to the control device 12 according to whether or not the inclusion O ₂ is pinched between the door tip rubbers 7R and 7L.

  The signal lines 11R and 11L shown in FIGS. 1, 2 and 4 to 7 are electric wires that transmit a door-nip detection signal from the fixed body side contact portions 17A and 17B of the signal transmission devices 14R and 14L to the door-nip determination device 10. .. The signal lines 11R and 11L are arranged along the inner side surface of the vehicle body 3 shown in FIGS. 1 and 2. As shown in FIGS. 1, 2, and 4 to 7, the signal lines 11R and 11L have one end connected to the fixed body side contact portions 17A and 17B of the signal transmission devices 14R and 14L, and the other end. The end portion is connected to the door pinch determination device 10.

The control device 12 shown in FIGS. 1 and 2 is a device that controls various operations relating to the vehicle 2. The control device 12 is, for example, a train centralized management system that collectively manages various devices of the vehicle 2 and is installed in the vehicle 2. The control device 12 drives and controls a door closing machine that opens and closes the side sliding doors 6R and 6L. For example, when the control device 12 determines that the intervening object O ₂ is sandwiched between the door tip rubbers 7R and 7L as shown in FIG. 3 (A), and outputs a door pinching determination signal. , The door closing machine is drive-controlled so as to restart the side sliding doors 6R and 6L.

The display device 13 shown in FIGS. 1 and 2 is a device for displaying various information regarding the vehicle 2. The display device 13 is, for example, a monitor device such as a liquid crystal display device or a touch panel device that displays the determination result of the door-jamming determination device 10 on the screen, and is installed in the cabin of the vehicle 2. The display device 13 displays the operating condition of each side sliding door 6R, 6L of the vehicle 2 on the monitor screen, and when the train is composed of one or a plurality of vehicles 2, the presence or absence of the inclusion O ₂ is pinched. Each 2 is displayed on the screen so that the crew can visually recognize it. The display device 13 displays the operation status of the side sliding doors 6R and 6L for each vehicle 2 on the screen by using, for example, characters, figures, symbols, or a combination thereof. The display device 13 displays, for example, the side sliding doors 6R and 6L in which the inclusion O ₂ is not sandwiched between the door tip rubbers 7R and 7L in blue on the monitor screen, and the inclusion O between the door tip rubbers 7R and 7L. _The side sliding doors 6R and 6L in which ₂ is sandwiched are displayed in red on the monitor screen.

The signal transmission devices 14R and 14L shown in FIGS. 1 and 2 detect the door pinch by contacting the door side contact portions 15A and 15B and the fixed body side contact portions 17A and 17B between the side sliding doors 6R and 6L and the vehicle body 3. A device that transmits signals. The signal transmission devices 14R and 14L transmit the door pinch detection signals output by the door pinch detection devices 8R and 8L from the side sliding doors 6R and 6L side which are movable bodies to the vehicle body 3 side which is a fixed body. As shown in FIGS. 8 (C) and 8 (D), the signal transmission devices 14R and 14L allow the door side contact portions 15A and 15B and the fixed body side contacts while the side sliding doors 6R and 6L are moving in the predetermined section L _1. This is a contact type transmission device that transmits a door pinch detection signal from the door pinch detection devices 8R and 8L to the door pinch determination device 10 in a state where the parts 17A and 17B are in contact with each other. The signal transmission device 14R transmits the door pinch detection signal output from the door pinch detection device 8R on the side sliding door 6R side to the door pinch determination device 10, and the signal transmission device 14L outputs the door pinch detection device 8L on the side sliding door 6L side. The door pinch detection signal is transmitted to the door pinch determination device 10. The signal transmission devices 14R and 14L include the door-side contact portions 15A and 15B shown in FIGS. 4 to 8, the door-side support portion 16 shown in FIGS. 4 to 6 and 8, and the fixed body side shown in FIGS. The contact parts 17A and 17B, the fixed body side support part 18 shown in FIGS. 4 to 6 and 8, the contact state maintaining part 19, and the short-circuit structure 20 shown in FIGS. 4 to 8 are provided. The signal transmission devices 14R and 14L have the same structure, and in the following description, the signal transmission device 14R side of the signal transmission devices 14R and 14L shown in FIGS. 1 and 2 will be mainly described, and the signal transmission device 14R side will be described. Detailed description is omitted.

  The door side contact portions 15A and 15B shown in FIGS. 4 to 8 are movable contacts that reciprocate together with the side sliding door 6L. The door-side contact parts 15A and 15B move relative to the fixed body-side contact parts 17A and 17B, and come into contact with and separate from the fixed-body-side contact parts 17A and 17B in conjunction with the opening / closing operation of the side sliding door 6L. As shown in FIGS. 4 to 6, the door-side contact portions 15A and 15B are attached to the door-side support portion 16 in parallel with each other at a predetermined interval in the vertical direction. As shown in FIG. 5, when the side sliding door 6L is closed, the door side contact portion 15A starts contact with the fixed body side contact portion 17A before the door side contact portion 15B starts contact with the fixed body side contact portion 17B. When the side sliding door 6L is opened, the door side contact portion 15A starts separating from the fixed body side contact portion 17A after the door side contact portion 15B starts to separate from the fixed body side contact portion 17B. For example, the door side contact part 15A is a ground side (minus side) contact part, and the door side contact part 15B is a non-ground side (plus side) contact part. The door-side contact portions 15A and 15B include contact portions 15a and 15b shown in FIGS. 4 to 8, a conductive portion 15c, and a fixing portion 15d shown in FIGS. 4 to 6.

The contact portion 15a shown in FIGS. 4 to 7 is a portion that contacts the contact portion 17a on the fixed body side contact portion 17A side, and the contact portion 15b is a portion that contacts the contact portion 17b on the fixed body side contact portion 17B side. The contact portions 15a and 15b are electrical contacts made of a conductive member having a disk-like appearance. The contact portion 15a is movable back and forth according to the opening / closing operation of the side sliding door 6L. As shown in FIG. 8 (A), the contact portion 15a projects more than the contact portion 15b when the side sliding door 6L is located at the open position P ₂ , and as shown in FIG. 8 (D), the side sliding door 6L. Moves forward and backward while reciprocating in the predetermined section L _1, and when the side sliding door 6L is in the closed position P _{1 as} shown in FIG. 8D, moves backward to the same position as the contact portion 15b. There is. As shown in FIGS. 4 to 6 and 8, the contact portion 15b is fixed to a predetermined position of the door-side support portion 16 regardless of the opening / closing operation of the side sliding door 6L, unlike the contact portion 15a.

  The conductive portion 15c shown in FIGS. 4 to 8 is a portion for securing a current path. The conductive portion 15c is a conductive member having a shaft-like appearance, and is integrally formed on the back surfaces of the contact portions 15a and 15b. The conductive portion 15c has a male screw portion formed at the end opposite to the side where the contact portions 15a and 15b are formed. The fixing portion 15d shown in FIGS. 4 to 6 is a portion that fixes the door-side contact portion 15B to the door-side support portion 16. The fixed portion 15d is fixed to the conductive portion 15c so that the door-side support portion 16 and the short-circuit contact portion 21b are sandwiched between the fixed portion 15d and the contact portion 15b. The fixing portion 15d is, for example, a nut that meshes with the male screw portion of the conductive portion 15c, and is detachably attached to the conductive portion 15c.

  The door-side support portion 16 shown in FIGS. 4 to 6 is a portion that supports the door-side contact portions 15A and 15B. The door-side support portion 16 supports the door-side contact portion 15A in a retractable state and supports the door-side contact portion 15B in a fixed state. The door side support portion 16 is detachably fixed to the upper end portion of the side sliding door 6L so as to move integrally with the side sliding door 6L. The door-side support portion 16 is a plate member that functions as a bracket having a substantially quadrangular appearance, and is an insulator that electrically insulates the door-side contact portions 15A and 15B and the switching portion 21. The door-side support portion 16 is made of, for example, synthetic resin such as insulating plastic such as nylon resin. The door-side support part 16 includes a housing part 16a, an insertion part 16b, a guide part 16c, and the like.

  The accommodating portion 16a illustrated in FIGS. 4 to 6 is a portion that accommodates the biasing portion 21c. The housing portion 16a is a recess formed on the side surface of the door-side support portion 16, and has a hole diameter smaller than the outer diameter of the contact portion 15a. The accommodating portion 16a has a predetermined depth so that when the contact portion 17a of the stationary body side contact portion 17A comes into contact with the side surface of the door side supporting portion 16, the biasing portion 21c is compressed and accommodated in the accommodating portion 16a. Is formed by The insertion portion 16b is a portion into which the door side contact portion 15B is inserted. The insertion portion 16b is a through hole that horizontally penetrates the door-side support portion 16 so that the conductive portion 15c of the door-side contact portion 15B is fixed in a state of being inserted into the door-side support portion 16. The guide portion 16c is a portion that guides the door-side contact portion 15A so as to move back and forth. The guide portion 16c guides the door-side contact portion 15A so as to reciprocate in the moving direction of the side sliding door 6L. The guide portion 16c is a through hole that horizontally extends through the door-side support portion 16 so that the conductive portion 15c of the door-side contact portion 15A can slide with respect to the door-side support portion 16. It is formed at the bottom of the 16 housing portions 16a.

  The fixed body side contact portions 17A and 17B shown in FIGS. 4 to 8 are fixed contacts fixed to the vehicle body 3 side. Unlike the door-side contact portions 15A and 15B, the fixed-body-side contact portions 17A and 17B do not reciprocate together with the side sliding door 6L, but contact with and separate from the door-side contact portions 15A and 15B with respect to the fixed-body-side support portion 18. Move back and forth. The fixed body side contact portions 17A and 17B are attached to the fixed body side support portion 18 in parallel with each other at predetermined intervals in the vertical direction so that they can come into contact with the door side contact portions 15A and 15B. For example, the fixed body side contact part 17A is a ground side (minus side) contact part, and the fixed body side contact part 17B is a non-ground side (plus side) contact part. The fixed body side contact portions 17A and 17B include contact portions 17a and 17b shown in FIGS. 4 to 8, a conductive portion 17c shown in FIGS. 4 to 6, and a protrusion amount regulation portion 17d.

The contact portions 17a and 17b shown in FIGS. 4 to 8 are portions that come into contact with the contact portions 15a and 15b on the door side contact portions 15A and 15B. The contact portions 17a and 17b are electrical contacts made of a conductive member having a pin-like appearance. The contact portions 17a and 17b are movable according to the opening / closing operation of the side sliding door 6L. As shown in FIG. 8 (A), the contact portions 17a, 17b project when the side sliding door 6L is located at the open position P ₂ , and as shown in FIG. 8 (C), the side sliding door 6L has a predetermined section. While reciprocating along L ₁ , it moves forward and backward, and as shown in FIG. 8D, it moves backward when the side sliding door 6L is located at the closed position P ₁ . When the side sliding door 6L moves from the open position P ₂ to the closed position P ₁ , the contact portion 17a is more than the contact portion 17b starting contact with the contact portion 15b, as shown in FIGS. 5 and 8B. The contact with the contact portion 15a is started before. The conductive portion 17c shown in FIGS. 4 to 6 is a portion for ensuring a current path. The conductive portion 17c is a conductive member having a shaft-like appearance, and is integrally formed with the contact portions 17a and 17b.

  The protrusion amount regulation portion 17d shown in FIGS. 4 to 6 is a portion that regulates the protrusion amount of the fixed body side contact portions 17A and 17B to a predetermined amount. The protrusion amount restricting portion 17d is a flange portion formed on the outer peripheral portion of the conductive portion 17c of the fixed body side contact portions 17A and 17B, and has an outer diameter larger than the hole diameter of the guide portion 18a. The protrusion amount restricting portion 17d also functions as a slip-out preventing portion (stopper portion) that prevents the fixed body side contact portions 17A and 17B from slipping out of the fixed body side support portion 18. The protrusion amount restricting portion 17d contacts the fixed body side support portion 18 to cause the fixed body side contact portions 17A and 17B to protrude by a predetermined amount. The protrusion amount restricting portion 17d is, for example, a nut that meshes with a male screw portion formed on the outer peripheral surface of the fixed body side contact portions 17A and 17B, and is detachably attached to the fixed body side contact portions 17A and 17B. The protrusion amount regulation portion 17d adjusts the protrusion amount of the contact portion 17a by adjusting the mounting position, and the timing when the door side contact portions 15A, 15B and the fixed body side contact portions 17A, 17B change from the non-contact state to the contact state. Also functions as a timing adjustment unit that adjusts.

  The fixed body side support portion 18 shown in FIGS. 4 to 6 and 8 is a portion that supports the fixed body side contact portions 17A and 17B. The fixed body side support portion 18 supports the fixed body side contact portions 17A and 17B in a state capable of advancing and retracting. The fixed body side support portions 18 are arranged in parallel to each other with a predetermined interval in the left-right direction, and support the fixed body side contact portions 17A and 17B near the front end portion and near the rear end portion, respectively. The fixed body side support portion 18 is detachably fixed to the cam 5a of the side entrance / exit 5. The fixed body side support portion 18 is a plate member that functions as a bracket having a substantially quadrangular appearance, and is electrically insulated from the fixed body side contact portions 17A and 17B and the contact state maintaining portion 19 by using an insulating material such as nylon resin. It is made of synthetic resin such as plastic. As shown in FIGS. 4 to 6, the fixed body side support portion 18 includes a guide portion 18a and the like.

  The guide portion 18a shown in FIGS. 4 to 6 is a portion that guides the fixed body side contact portions 17A and 17B so as to be movable back and forth. The guide portion 18a guides the fixed body side contact portions 17A and 17B so as to be reciprocally movable in the movement direction of the side sliding door 6L. The guide portion 18a is a through hole that horizontally extends through the fixed body side support portion 18 so that the conductive portion 17c of the fixed body side contact portions 17A and 17B can be slid while being supported by the fixed body side support portion 18. ..

The contact state maintaining unit 19 shown in FIGS. 4 to 6 and 8 has the door-side contact portions 15A and 15B and the fixed-body-side contact portions 17A and 17B while the side sliding door 6L is located within the predetermined section L ₁ . Is a part for maintaining the contact state. Here, the predetermined interval L ₁ shown in FIG. 8 (C) is a section from the front of the predetermined position P ₃ of the closed position P ₁ to the closed position P _1. The predetermined section L ₁ is a detection section in which the door pinch detection device 8L detects pinching of the inclusion O ₂ between the door tip rubbers 7R and 7L. Predetermined position P ₃ is a Tohasami detection start position when the door head rubber 7L is closed is Tohasami sensing device 8L starts detecting operation, the Tohasami sensing device 8L is detecting operation when the door head rubber 7L opens This is the end-of-door-pinching detection end position. The predetermined position P ₃ is set, for example, at a position before the closed position (stop position where the side sliding door 6L is closed) P ₁ toward the open position P ₂ by a predetermined distance. The contact state maintaining unit 19 is fixed to the door contact points 15A and 15B so that the door jam detection signal output from the door jam detection device 8L is transmitted from the door contact points 15A and 15B to the fixed body contact points 17A and 17B. The body side contact portions 17A and 17B are maintained in contact with each other. The contact state maintaining unit 19 includes a biasing unit 19a and the like as shown in FIGS. 4 to 6 and 8.

The biasing portion 19a shown in FIGS. 4 to 6 and 8 is a portion that biases the fixed body side contact portions 17A and 17B. The urging portion 19a is an elastic support portion that elastically supports the fixed body side contact portions 17A, 17B so as to be movable back and forth in the moving direction of the side sliding door 6L while applying a urging force (spring force) to the fixed body side contact portions 17A, 17B. Also works. The biasing portion 19a is a compression coil spring to which a compression force is applied from the fixed body side contact portions 17A and 17B. As shown in FIGS. 6 and 8B to 8D, the urging portion 19a has the side sliding door 6L after the door-side contact portions 15A and 15B and the fixed-body-side contact portions 17A and 17B start contact with each other. Until it stops at the closed position P ₁ , the stationary body side contact portions 17A and 17B are compressed while exerting an urging force. The biasing portion 19a is gradually compressed by the pressing force applied from the fixed body side contact portions 17A and 17B when the side sliding door 6L is moving in the closing direction, and as shown in FIGS. It is most compressed when 6L is stopped in the closed position P ₁ . On the other hand, the biasing portion 19a is fixed from the time when the side sliding door 6L starts moving from the closed position P ₁ until the door side contact portions 15A and 15B and the fixed body side contact portions 17A and 17B start separating. The body side contact portions 17A and 17B are extended while applying a biasing force. When the side sliding door 6L is moving in the opening direction, the urging portion 19a gradually expands due to a decrease in the pressing force acting from the fixed body side contact portions 17A and 17B. ) As shown in (B), the door side contact portions 15A and 15B are most extended when they are separated from the fixed body side contact portions 17A and 17B. As shown in FIGS. 8 (B) and 8 (C), the urging portion 19a has the urging portion 21c on the switching portion 21 side first when the door side contact portion 15A and the fixed body side contact portion 17A start contact with each other. The spring constant is set to be larger (harder) than that of the urging portion 21c so as to bend. The biasing portion 19a is inserted in the outer peripheral portion of the conductive portion 17c of the fixed body side contact portions 17A and 17B, and is sandwiched between the protrusion amount restricting portion 17d of the fixed body side contact portions 17A and 17B and the fixed body side support portion 18. Has been.

The short circuit structure 20 shown in FIGS. 4 to 8 is a structure for electrically shorting the door pinch detection device 8L. When the side sliding door 6L is outside the predetermined section L ₁ , the short-circuit structure 20 connects the terminals 8d to 8e of the door pinch detection device 8L as shown in FIGS. 4, 7A and 8A. The short circuit prevents the electric charge from being accumulated in the door pinch detection device 8L. The short-circuit structure 20 stores the door-pinch detection device 8L in the door-pinch detection signal output by the door-pinch detection device 8L when the door-pinch detection device 8L does not perform the detection operation. It is possible to prevent an electric signal from being mixed due to an electric charge to be generated. As shown in FIGS. 4 to 8, the short circuit structure 20 includes a switching unit 21 and the like.

  The switching unit 21 illustrated in FIGS. 4 to 8 switches the terminals 8d to 8e of the door pinch detection device 8L to the short-circuited state when the door pinch detection device 8L does not perform the detection operation, and the door pinch detection device 8L performs the detection operation. This is a part for switching the terminals 8d to 8e of the door pinch detection device 8L to the insulated state. As shown in FIG. 4, FIG. 7 (A) and FIG. 8 (A), the switching unit 21 switches the terminals 8d to 8e of the door pinch detection device 8L to the short-circuited state, thereby being shown in FIG. 7 (A). The electric charge accumulated between the electrode portions 8b to 8c is discharged. The switching unit 21 switches the terminals 8d to 8e of the door pinch detection device 8L to a short-circuited state in association with the separating operation between the door side contact portion 15A and the fixed body side contact portion 17A. As shown in FIG. 4, FIG. 7 (A) and FIG. 8 (A), the switching unit 21 is a terminal of the door pinch detection device 8L when the door side contact portion 15A and the fixed body side contact portion 17A are not in contact with each other. 8d-8e is switched to a short circuit state. On the other hand, as shown in FIGS. 5, 7 (B) and 8 (B), the switching unit 21 interlocks with the contact operation between the door-side contact portion 15A and the fixed-body-side contact portion 17A, and the door pinch detection device. The 8L terminals 8d to 8e are switched to the insulated state. As shown in FIGS. 5, 6, 7 (B), and 8 (B) to (D), the switching unit 21 has the door-side contact portion 15A and the fixed-body-side contact portion 17A in contact with each other. The terminals 8d to 8e of the door pinch detection device 8L are switched to the insulated state. The switching unit 21 includes a switch unit 21a shown in FIGS. 4 to 8, a short-circuit contact unit 21b, and a biasing unit 21c shown in FIGS. 4 to 6 and 8.

  The switch portion 21a shown in FIGS. 4 to 8 is a portion that opens and closes between the terminals 8d to 8e of the door pinch detection device 8L. The switch portion 21a functions as a switch that switches between the short-circuited state and the insulated state between the terminals 8d to 8e of the door pinch detection device 8L. The switch portion 21a is fixed to the door-side contact portion 15A and reciprocates integrally with the door-side contact portion 15A. The switch portion 21a is a conductor that electrically connects the short-circuit contact portion 21b and the door-side contact portion 15A, and is made of a conductive metal or synthetic resin. The switch portion 21a is, for example, a nut that meshes with the male screw portion of the conductive portion 15c, and is detachably attached to the conductive portion 15c. The switch part 21a adjusts the protrusion amount of the contact part 15a by adjusting the mounting position, and adjusts the timing when the door side contact part 15A and the fixed body side contact part 17A change from the non-contact state to the contact state. Function as. As shown in FIGS. 4 and 8A, the switch portion 21a detects the door pinch by the urging force applied from the urging portion 21c when the door side contact portion 15A and the fixed body side contact portion 17A are not in contact with each other. The terminals 8d to 8e of the device 8L are closed. The switch portion 21a is in contact with the short-circuit contact portion 21b when the door-side contact portion 15A and the fixed body-side contact portion 17A are not in contact with each other, and the short-circuit contact portion 21b and the door-side contact portion 15A are energized. Switch. On the other hand, as shown in FIGS. 5, 6 and 8B to 8D, the switch portion 21a includes the fixed body side contact portion when the door side contact portion 15A and the fixed body side contact portion 17A are in contact with each other. The pressing force applied from the portion 17A opens the terminals 8d to 8e of the door pinch detection device 8L. The switch portion 21a is separated from the short-circuit contact portion 21b when the door-side contact portion 15A and the fixed body-side contact portion 17A are in contact with each other, and the short-circuit contact portion 21b and the door-side contact portion 15A are insulated from each other. Switch.

  The short-circuit contact part 21b shown in FIGS. 4 to 8 is a contact with which the switch part 21a contacts and separates. The short-circuit contact portion 21b is a flat plate-shaped member that makes surface contact with the bottom surface of the switch portion 21a, and is electrically connected to the door-side contact portion 15B. The short-circuit contact portion 21b is a conductor such as a short-circuit stay that energizes the door-side contact portion 15A and the door-side contact portion 15B, and is formed of a conductive metal or synthetic resin in a thin plate shape. The short-circuit contact portion 21b is fixed to the side surface of the door-side support portion 16 with an adhesive, a screw, or the like.

The biasing portion 21c shown in FIGS. 4 to 6 and 8 is a portion that biases the switch portion 21a. The urging portion 21c also functions as an elastic support portion that elastically supports the door-side contact portion 15A so as to be movable back and forth in the moving direction of the side sliding door 6L while applying a urging force (spring force) to the door-side contact portion 15A. The urging portion 21c is a compression coil spring to which a compressive force acts from the door side contact portion 15A. As shown in FIGS. 6 and 8B to 8D, in the urging portion 21c, the side sliding door 6L is in the closed position P _{1 after the} door side contact portion 15A and the fixed body side contact portion 17A start contact with _{each other.} Until it stops at, it is compressed while applying a biasing force to the door-side contact portion 15A. The urging portion 21c is compressed by the pressing force applied from the fixed body side contact portion 17A when the side sliding door 6L is moving in the closing direction. As shown in FIGS. 6 and 8C and 8D, the urging portion 21c is compressed most until the side sliding door 6L reaches the predetermined position P ₃ and stops at the closed position P ₁ . On the other hand, the urging portion 21c is the door side contact portion 15A from the time when the side sliding door 6L starts moving from the closed position P ₁ until the door side contact portion 15A and the fixed body side contact portion 17A start separating. Continue to exert a biasing force on. When the side sliding door 6L is moved from the predetermined position P _{3 in the} opening direction, the urging portion 21c gradually expands due to a decrease in the pressing force acting from the fixed body side contact portion 17A, and the urging portion 21c is extended (see FIGS. 4 and 8). As shown in A), the door side contact portion 15A is most extended when it is separated from the fixed body side contact portion 17A. The biasing portion 21c is inserted into the outer peripheral portion of the conductive portion 15c of the door side contact portion 15A, and is sandwiched between the contact portion 15a of the door side contact portion 15A and the door side support portion 16.

Next, the operation of the short-circuit structure of the detection device according to the first embodiment of the present invention will be described.
Hereinafter, the operation on the signal transmission device 14L side of the signal transmission devices 14R and 14L illustrated in FIGS. 1 and 2 will be mainly described, and detailed description of the operation on the signal transmission device 14R side will be omitted.
When the side sliding door 6L shown in FIGS. 1 and 2 is opened and closed, when the crew member of the vehicle 2 operates the conductor switch, the piston is driven by air pressure to open and close the side sliding door 6L when the door closing machine is an air cylinder type. However, when the door closing machine is an electric type, an electric motor drives a ball screw or the like to open / close the side sliding door 6L. As shown in FIG. 18B, when a relatively large inclusion O ₁ is sandwiched between the door tip rubbers 107R and 107L when the side sliding door 106L is closed, a current flowing through the door closing machine that drives the side sliding door 106L to open and close. Since the value changes, the door pinch detection device detects the pinch of the inclusion O ₁ . On the other hand, as shown in FIG. 18C, when the relatively small inclusion O ₂ is sandwiched between the door tip rubbers 107R and 107L when the side sliding door 106L is closed, the side sliding door 106L reaches a predetermined position. Since it stops, the inclusion of the inclusion O ₂ may not be detected. However, as shown in FIG. 3A, when the inclusion O ₂ is sandwiched between the door tip rubbers 7R and 7L joined with the door pinch detection devices 8R and 8L, the elastic deformation of the door tip rubbers 7R and 7L is followed. The door pinch detection devices 8R and 8L also elastically deform. As a result, the door pinch detection device 8L detects the pinching of the inclusion O ₂ between the door tip rubbers 7R and 7L so that the value of the current flowing through the door closing machine does not change, and the door pinch detection device 8L operates. Outputs a pinch detection signal.

When the signal transmission device 14L does not have the short-circuit structure 20 shown in FIGS. 4 to 8 and 10 to 17, the side sliding door 6L shown in FIGS. 1, 4 and 8A has the open position P ₂ Therefore, if it is stopped for a comparatively long time, electric charges may be accumulated in the door pinch detection device 8L even though the door pinch detection device 8L is not operated for detection. For example, when the vehicle 2 is stopped for a long time with the side sliding door 6L open for the return operation, electric charges may be accumulated in the door pinch detection device 8L. In such a case, when the side sliding door 6L is closed from the open position P ₂ and the door side contact parts 15A, 15B come into contact with the fixed body side contact parts 17A, 17B, door pinch detection is performed while the side sliding door 6L is open. An electric signal based on the charges accumulated in the device 8L is transmitted from the door side contact parts 15A, 15B to the door pinch determination device 10 through the fixed body side contact parts 17A, 17B. Therefore, even when there is no jamming, the electric signal due to the electric charge accumulated in the door jamming detection device 8L is mixed into the door jamming determination device 10 as noise while the side sliding door 6L is open. As a result, the detection accuracy of the door pinch determination device 10 may decrease.

On the other hand, when the signal transmission device 14L includes the short-circuit structure 20 shown in FIGS. 4 to 8, the side sliding door 6L stops at the open position P _{2 as} shown in FIGS. 1, 4 and 8A. Then, the door side contact portion 15A and the fixed body side contact portion 17A are separated from each other. In this state, as shown in FIGS. 4 and 8A, the urging force of the urging portion 21c of the switching portion 21 acts on the door-side contact portion 15A, and the contact portion 15a of the door-side contact portion 15A. Protrudes from the door-side support portion 16 and the switch portion 21a moves to the door-side support portion 16 side, so the switch portion 21a is in contact with the short-circuit contact portion 21b. Therefore, as shown in FIG. 7 (A), an electric circuit composed of the door pinch detection device 8L, the signal line 9L, the door side contact parts 15A and 15B, the short-circuit contact part 21b and the switch part 21a is formed by the switch part 21a. It is closed and switched to a closed circuit. As a result, as shown in FIG. 4, FIG. 7 (A) and FIG. 8 (A), since the switching unit 21 switches the terminals 8e to 8d of the door pinch detection device 8L to the short-circuited state, the door pinch detection device. The electric charge accumulated in 8L is discharged.

When the side sliding door 6L is closed from the open position P ₂ shown in FIG. 8 (A) to the closed position P ₁ shown in FIG. 8 (D), the door tip rubbers 7R, 7L approach each other. As a result, as shown in FIG. 8 (A), the door side contact portions 15A and 15B become closer to the fixed body side contact portions 17A and 17B together with the side sliding door 6L. Before the door tip rubber 7L reaches the predetermined position P ₃ shown in FIG. 8C, the contact portion 15a of the door side contact portion 15A is contacted with the contact portion 17a of the fixed body side contact portion 17A as shown in FIG. 8B. Contact with. At this time, the pressing force of the fixed body side contact portion 17A acts on the door side contact portion 15A, resists the urging force of the urging portion 21c of the switching portion 21, and compresses the urging portion 21c while the fixed body side contact portion 17A. Pushes in the door side contact portion 15A. Therefore, as shown in FIGS. 5 and 8B, the contact portion 15a of the door-side contact portion 15A moves to the door-side support portion 16 side, the switch portion 21a projects from the door-side support portion 16, and the switch The part 21a is separated from the short-circuit contact part 21b. In this state, as shown in FIG. 7B, an electric circuit composed of the door pinch detection device 8L, the signal line 9L, the door side contact parts 15A and 15B, the short-circuit contact part 21b and the switch part 21a is the switch part 21a. Opens to open circuit. As a result, the switching unit 21 switches the terminals 8e to 8d of the door pinch detection device 8L to the insulated state.

As shown in FIG. 8C, when the door tip rubbers 7R and 7L reach a predetermined position P ₃ before reaching the closing position P ₁ , the contact portion 15a of the door side contact portion 15A becomes the fixed body side contact portion 17A. The contact portion 15b of the door-side contact portion 15B comes into contact with the contact portion 17b of the fixed body-side contact portion 17B while being in contact with the contact portion 17a. As a result, the door pinch detection signal output from the door pinch detection device 8L can be transmitted from the door side contact parts 15A, 15B to the door pinch determination device 10 through the fixed body side contact parts 17A, 17B.

When the side sliding door 6L is further closed from the predetermined position P ₃ shown in FIG. 8C toward the closed position P ₁ , the door tip rubbers 7R and 7L are further approached. As a result, as shown in FIG. 6, the door side contact portions 15A and 15B further push the fixed body side contact portions 17A and 17B against the urging force of the urging portion 19a, and the urging portion 19a is compressed while the fixed body side is pressed. The contact portions 17A and 17B move while being guided by the guide portion 18a. As shown in FIG. 8D, when the door tip rubbers 7R and 7L reach the closed position P ₁ , the side sliding door 6L is stopped and the door tip rubbers 7R and 7L are brought into close contact with each other. At this time, the contact portions 15a and 15b of the door side contact portions 15A and 15B and the contact portions 17a and 17b of the fixed body side contact portions 17A and 17B are kept in close contact with each other by the urging force of the urging portions 19a and 21c. Therefore, the door pinch detection signal output from the door pinch detection device 8L can be continuously transmitted from the door pinch detection device 8L to the door pinch determination device 10 through the door side contact parts 15A, 15B and the fixed body side contact parts 17A, 17B. become.

When the door pinch detection signal output from the door pinch detection device 8L illustrated in FIG. 2 is input to the door pinch determination device 10 through the signal transmission device 14L, it is determined whether the level of the door pinch detection signal exceeds a predetermined value. The device 10 determines. As shown in FIG. 3B, when the inclusion O ₂ is not pinched between the door tip rubbers 7R and 7L, the signal level of the door pinch detection signal output by the door pinch detection device 8L is lower than a predetermined value. .. For this reason, the door pinch determination device 10 determines that the inclusion O ₂ is not pinched between the door tip rubbers 7R and 7L. As a result, the control device 12 instructs the display device 13 to display the determination result of the door pinch determination device 10 on the screen, and the inclusion O ₂ is sandwiched between the door tip rubbers 7R and 7L. The non-side sliding door 6L is displayed on the monitor screen by the display device 13 (for example, displayed in blue). On the other hand, as shown in FIG. 3 (A), when the inclusion O ₂ is sandwiched between the door tip rubbers 7R and 7L, the signal level of the door pinch detection signal output by the door pinch detection device 8L is higher than a predetermined value. Become. Therefore, the door pinch determination device 10 determines that the inclusion O ₂ is sandwiched between the door tip rubbers 7R and 7L, and the door pinch determination device 10 outputs the determination result to the control device 12.

When the side sliding door 6L is opened from the closed position P ₁ shown in FIG. 8 (D) to the open position P ₂ shown in FIG. 8 (A), the door tip rubbers 7R, 7L are separated from each other. At this time, as shown in FIG. 6, the contact parts 15a and 15b of the door side contact parts 15A and 15B and the contact parts 17a and 17b of the fixed body side contact parts 17A and 17B are brought into close contact with each other by the urging force of the urging parts 19a and 21c. While maintaining this state, the urging portion 19a gradually expands and the fixed body side contact portions 17A and 17B move while being guided by the guide portion 18a. As shown in FIG. 8C, when the door tip rubbers 7R and 7L reach the predetermined position P ₃ , the protrusion amount restricting portions 17d of the fixed body side contact portions 17A and 17B are moved to the fixed body side support portion 18 as shown in FIG. And the fixed body side contact portions 17A and 17B that move along the guide portion 18a stop.

When the side sliding door 6L is further opened from the predetermined position P ₃ shown in FIG. 8C to the open position P ₂ shown in FIG. 8A, the side sliding door 6L is integrated with the side sliding door 6L as shown in FIG. 8B. As a result, the door side contact portion 15B is separated from the fixed body side contact portion 17B, and the contact portion 15b of the door side contact portion 15B and the contact portion 17b of the fixed body side contact portion 17B are switched to the non-contact state. As a result, it becomes impossible to transmit the door pinch detection signal output from the door pinch detection device 8L from the door pinch detection device 8L to the door pinch determination device 10.

At this time, as shown in FIG. 5, since the biasing force of the biasing portion 21c of the switching portion 21 acts on the door-side contact portion 15A, even if the door-side contact portion 15B is separated from the fixed body-side contact portion 17B. The door-side contact portion 15A and the fixed body-side contact portion 17A maintain the contact state. When the side sliding door 6L is further opened toward the open position P ₂ shown in FIG. 8A, the contact portion 15a of the door-side contact portion 15A projects from the door-side support portion 16, and the switch portion 21a is on the door-side support portion 16 side. Therefore, the switch portion 21a comes into contact with the short-circuit contact portion 21b. Therefore, as shown in FIG. 7 (A), an electric circuit composed of the door pinch detection device 8L, the signal line 9L, the door side contact parts 15A and 15B, the short-circuit contact part 21b and the switch part 21a is formed by the switch part 21a. It becomes a closed circuit by being closed. As a result, by switching between the terminals 8e~8d of Tohasami sensing device 8L to the switching unit 21 is short-circuited state, stored in Tohasami sensing device 8L while side sliding doors 6L is stopped in the open position P ₂ charge Is discharged.

The graph shown in FIG. 9 shows that the side sliding door 6L shown in FIG. 1 is opened at the opening position P ₂ for the opening time of 15 (s), 30 (s), 60 (s), 180 (s). It is a waveform which shows the time change of the voltage which occurs when the contact parts 15A and 15B and the fixed body side contact parts 17A and 17B are brought into contact. The vertical axis shown in FIG. 9 represents voltage, and the horizontal axis represents time. As shown in FIG. 9A, when the short-circuit structure 20 shown in FIGS. 4 to 8 is not provided, after the side sliding door 6L shown in FIG. 1 is opened at the open position P ₂ for a predetermined time, the door side is opened. It has been confirmed that when the contact portions 15A and 15B and the fixed body side contact portions 17A and 17B are brought into contact with each other, a larger voltage is generated as the opening time is longer. On the other hand, as shown in FIG. 9B, when the short-circuit structure 20 shown in FIGS. 4 to 8 is provided, after the side sliding door 6L shown in FIG. 1 is opened at the open position P ₂ for a predetermined time, It was confirmed that when the door side contact parts 15A and 15B and the fixed body side contact parts 17A and 17B were brought into contact with each other, a large voltage was not generated regardless of the opening time.

The short circuit structure of the detection device according to the first embodiment of the present invention has the following effects.
(1) In the first embodiment, when the door pinch detection device 8L is not operated for detection, the switching unit 21 switches the terminals 8d to 8e of the door pinch detection device 8L to the short-circuited state. In addition, in the first embodiment, when the door pinch detection device 8L is detected, the switching unit 21 switches the terminals 8d to 8e of the door pinch detection device 8L to the insulated state. Therefore, when the door pinch detection device 8L is not operated for detection, the electric charge accumulated in the door pinch detection device 8L can be surely discharged. As a result, it is possible to prevent the electric signal due to the electric charge accumulated in the door pinch detection device 8L when the door pinch detection device is not operated from being mixed as noise in the door pinch detection signal output by the door pinch detection device 8L, It is possible to improve the accuracy of detecting the door pinch.

(2) In the first embodiment, the door pinch detection device 8L includes a mechanical-electrical converter that converts mechanical displacement into an electrical signal by the piezoelectric effect. Therefore, while the door pinch detection device 8L is not performing the detection operation, the electromechanical conversion unit discharges the electric charge accumulated by the piezoelectric effect, and the door pinch detection accuracy can be improved. For example, when the piezoelectric rubber section 8a is used as the mechanical-electrical conversion section in the door jam detection device 8L, the electric charge accumulated in the piezoelectric rubber section 8a can be discharged when the door jam is not detected.

(3) In the first embodiment, when the door side contact parts 15A, 15B and the fixed body side contact parts 17A, 17B are in contact with each other, the terminals 8d to 8e of the door pinch detection device 8L are in an insulated state. .. Therefore, the door pinch detection device 8L can reliably transmit the door pinch detection signal from the door side contact parts 15A, 15B to the fixed body side contact parts 17A, 17B.

(4) In the first embodiment, when the door side contact parts 15A, 15B and the fixed body side contact parts 17A, 17B are not in contact with each other, the switching part 21 short-circuits the terminals 8d to 8e of the door pinch detection device 8L. Switch to state. Therefore, it is possible to reliably prevent the electric charge from being accumulated in the door pinch detection device 8L while the side sliding door 6L is in the open state.

(5) In the first embodiment, the switch portion 21a opens and closes between the terminals 8d to 8e of the door pinch detection device 8L, and the urging portion 21c urges the switch portion 21a. Further, in the first embodiment, when the door side contact parts 15A, 15B and the fixed body side contact parts 17A, 17B are not in contact with each other, the biasing force acting from the biasing part 21c causes the terminal 8d of the door pinch detection device 8L. The switch part 21a closes between 8e. Furthermore, in the first embodiment, when the door side contact portion 15A and the fixed body side contact portion 17A are in contact with each other, the terminals 8d to 8e of the door pinch detection device 8L are pressed by the pressing force applied from the fixed body side contact portion 17A. The switch portion 21a is opened between them. Therefore, by applying the urging force of the urging portion 21c to the switch portion 21a, it is possible to easily maintain the short-circuited state between the terminals 8d to 8e of the door pinch detection device 8L. Further, by applying the pressing force of the fixed body side contact portion 17A to the switch portion 21a, it is possible to easily maintain the insulating state between the terminals 8d to 8e of the door pinch detection device 8L.

(Second embodiment)
In the following, the same parts as those shown in FIGS. 1 to 8 will be assigned the same reference numerals and detailed description thereof will be omitted.
As shown in FIGS. 10 and 13 (A), the switching unit 21 interlocks with the separating operation between the door-side contact portion 15A and the fixed-body-side contact portion 17A to connect the terminals 8d to 8e of the door pinch detection device 8L. Switch to a short circuit condition. On the other hand, as shown in FIGS. 11, 12, and 13B to 13D, the switching unit 21 interlocks with the contact operation between the door-side contact portion 15A and the fixed body-side contact portion 17A, and detects the door pinch. The terminals 8d to 8e of the device 8L are switched to the insulated state. The switching unit 21 includes a switch unit 21d shown in FIGS. 10 to 13, a support unit 21e, and a pressing unit 21f.

The switch portion 21d shown in FIGS. 10 to 13 is a portion that opens and closes between the terminals 8d to 8e of the door pinch detection device 8L. The switch portion 21d functions as a switch that switches between the terminals 8d to 8e of the door pinch detection device 8L between a short-circuited state and an insulated state. The switch portion 21d is rotatably supported by the door-side support portion 16, and reciprocates together with the door-side contact portions 15A and 15B integrally with the door-side support portion 16. The switch portion 21d is a conductor such as a short-circuit bar that electrically connects between the door-side contact portion 15A and the door-side contact portion 15B. The switch portion 21d is a rod-shaped member having a substantially U-shaped appearance, and is made of conductive metal or synthetic resin. As shown in FIG. 10 (B) to FIG. 12 (B), the switch portion 21d moves in a direction (counterclockwise in the drawing) in which the switch portion 21d contacts the door-side contact portions 15A and 15B with the fulcrum S as the center of rotation. The center of gravity G of the switch portion 21d is arranged at a predetermined distance from the perpendicular line passing through the fulcrum S of the switch portion 21d so that the moment M ₁ due to its own weight acts.

As shown in FIGS. 10 and 13A, the switch portion 21d is sandwiched between the door side contact portions 15A and 15B and the fixed body side contact portions 17A and 17B by its own weight when the door side contact portions 15A and 15B are not close to each other. The terminals 8d to 8e of the detection device 8L are closed to switch between the door-side contact portions 15A and 15B to the energized state. As shown in FIG. 10B, when the switch portion 21d is not in contact with the pressing portion 21f, the switch portion 21d has a contact state with the door side contact portions 15A and 15B. Its own weight acts as a biasing force. When the pressing portion 21f is separated from the switch portion 21d, the switch portion 21d receives the moment M ₁ due to the own weight of the switch portion 21d and closes the terminals 8d to 8e of the door pinch detection device 8L. On the other hand, in the switch portion 21d, as shown in FIGS. 11, 12 and 13B to 13D, the door side contact portions 15A and 15B and the fixed body side contact portions 17A and 17B are in close proximity to and in contact with each other. At times, the terminals 8d to 8e of the door pinch detection device 8L are opened by the pressing force applied from the pressing portion 21f, and the door side contact portions 15A and 15B are switched to the non-energized state. Switch unit 21d, when the pressing portion 21f is in contact with the switch unit 21d, this is the moment M ₁ due to the weight of the switch portion 21d acts moment M ₂ by the pressing force of the pressing portion 21f in the opposite direction , The terminals 8d to 8e of the door pinch detection device 8L are opened.

  The support portion 21e shown in FIGS. 10 to 13 is a portion that rotatably supports the switch portion 21d. The support portion 21e functions as a bearing that rotatably supports the upper end portion of the switch portion 21d. The support portion 21e is fixed to the door side support portion 16 while being electrically insulated from the door side contact portions 15A and 15B. The support portion 21e is a shaft-shaped member that penetrates the upper end portion of the switch portion 21d and rotatably pin-joins (hinge-joins) the switch portion 21d.

The pressing portion 21f shown in FIGS. 10 to 13 is a portion that presses the switch portion 21d. The pressing portion 21f functions as a lever that switches the opening / closing operation of the switch portion 21d. The pressing portion 21f is fixed to the fixed body side support portion 18, and contacts and separates from the switch portion 21d. The pressing portion 21f exerts a pressing force on the switch portion 21d by coming into contact with the switch portion 21d, and pushes the switch portion 21d in a direction (clockwise in the figure) away from the door side contact portions 15A and 15B with the fulcrum S as a rotation center. A moment M ₂ due to pressure is applied to this switch portion 21d. The pressing portion 21f is a rod-shaped member having a substantially C-shaped appearance, and is made of an insulating metal or synthetic resin. As shown in FIGS. 11 and 12, the pressing portion 21f has an acute tip end portion, and is attached to the lower end portion of the fixed body side support portion 18 so as to come into contact with the lower end portion of the switch portion 21d.

Next, the operation of the short-circuit structure of the detection device according to the second embodiment of the present invention will be described.
When the side sliding door 6L is stopped at the open position P ₂ as shown in FIG. 1, the switch portion 21d and the pressing portion 21f of the switching portion 21 are separated from each other as shown in FIGS. 10 (A) and 13 (A). It is separated. In this state, as shown in FIG. 10B, the moment M ₁ due to the weight of the switch portion 21d acts on the switch portion 21d, and the switch portion 21d is in contact with the door side contact portions 15A and 15B. Therefore, as shown in FIGS. 10A and 13A, since the switching unit 21 switches the terminals 8e to 8d of the door pinch detection device 8L to the short-circuited state, the side sliding door 6L is in the predetermined section L. When it is outside ₁ , the electric charge accumulated in the door pinch detection device 8L is discharged.

When the side sliding door 6L is closed from the open position P ₂ shown in FIG. 13A to the closed position P ₁ shown in FIG. 13D, the door tip rubbers 7R and 7L approach each other. As a result, as shown in FIG. 13 (A), the door side contact portions 15A and 15B come closer to the fixed body side contact portions 17A and 17B integrally with the side sliding door 6L. Before the door tip rubber 7L reaches the predetermined position P ₃ shown in FIG. 13C and the contact portion 15a of the door side contact portion 15A comes into contact with the contact portion 17a of the fixed body side contact portion 17A, FIG. 11 and FIG. As shown in FIG. 13 (B), the switch portion 21d of the switching portion 21 contacts the pressing portion 21f. Therefore, as shown in FIG. 11 (B), the pressing force acts from the pressing portion 21f to the switch unit 21d, against the moment M ₁ due to the weight of the switch portion 21d, moment by pressing force of the pressing portion 21f M ₂ acts on the switch portion 21d, and the switch portion 21d is separated from the door side contact portions 15A and 15B. As a result, the switching unit 21 switches the terminals 8e to 8d of the door pinch detection device 8L to the insulated state.

As shown in FIG. 13 (C), the door head rubber 7R, when 7L reach in front of the predetermined position P ₃ to reach the closed position P _1, the contact portion 15a of Togawa contact portion 15A is a fixed-side contact portion 17A While contacting the contact part 17a, the contact part 15b of the door side contact part 15B contacts the contact part 17b of the fixed body side contact part 17B. As a result, the door pinch detection signal output from the door pinch detection device 8L can be transmitted from the door side contact parts 15A, 15B to the door pinch determination device 10 through the fixed body side contact parts 17A, 17B.

When the side sliding door 6L is further closed from the predetermined position P ₃ shown in FIG. 13 (C) toward the closed position P ₁ , the door tip rubbers 7R and 7L are further approached, and the door tip rubbers 7R and 7L are moved to the closed position P ₁ . When it reaches, the side sliding door 6L stops, and the door tip rubbers 7R and 7L come into close contact with each other. At this time, the contact portions 15a and 15b of the door side contact portions 15A and 15B and the contact portions 17a and 17b of the fixed body side contact portions 17A and 17B are kept in close contact with each other by the urging force of the urging portion 19a. Therefore, the door pinch detection signal output from the door pinch detection device 8L can be continuously transmitted from the door pinch detection device 8L to the door pinch determination device 10 through the door side contact parts 15A and 15B and the fixed body side contact parts 17A and 17B. become.

When the side sliding door 6L is opened from the closed position P ₁ shown in FIG. 13 (D) to the open position P ₂ shown in FIG. 13 (A), the door tip rubbers 7R, 7L are separated from each other. When the side sliding door 6L opens from the predetermined position P ₃ shown in FIG. 13 (C) to the open position P ₂ shown in FIG. 13 (A), as shown in FIG. 13 (B), the door side contact parts 15A, 15B. Is separated from the fixed body side contact parts 17A, 17B, and the door side contact parts 15A, 15B and the fixed body side contact parts 17A, 17B are switched to the non-contact state. As a result, it becomes impossible to transmit the door pinch detection signal output from the door pinch detection device 8L to the door pinch detection device 10L.

When the side sliding door 6L is further opened toward the open position P ₂ shown in FIG. 13 (A), the door side contact parts 15A, 15B are separated from the fixed body side contact parts 17A, 17B, and then, FIG. 10 and FIG. 13 (A). As shown in, the switch portion 21d of the switching portion 21 is separated from the pressing portion 21f. Therefore, as shown in FIG. 10B, the pressing force from the pressing portion 21f does not act on the switch portion 21d, and the moment M ₁ due to the weight of the switch portion 21d acts on the switch portion 21d as an urging force. 21d contacts the door side contact parts 15A and 15B. As a result, the switching unit 21 switches the terminals 8e to 8d of the door pinch detection device 8L to the short-circuited state. Therefore, as shown in FIGS. 10A and 13A, when the side sliding door 6L is outside the predetermined section L ₁ , the electric charge accumulated in the door pinch detection device 8L is discharged.

The short-circuit structure of the detection device according to the second embodiment of the present invention has the following effects in addition to the effects of the first embodiment.
In the second embodiment, the switch part 21d opens and closes between the terminals 8d to 8e of the door pinch detection device 8L, and the pressing part 21f presses the switch part 21d. Further, in the second embodiment, when the switch portion 21d and the pressing portion 21f are not in contact with each other, the switch portion 21d closes the terminals 8d to 8e of the door pinch detection device 8L by its own weight. Further, in the second embodiment, when the door side contact parts 15A, 15B and the fixed body side contact parts 17A, 17B are close to each other, the terminal 8d of the door pinch detection device 8L is caused by the pressing force applied from the pressing part 21f. The switch part 21d opens between 8e. Therefore, the terminals 8d to 8e of the door pinch detection device 8L can be easily switched between the short-circuited state and the insulated state in association with the opening / closing operation of the side sliding door 6L. Moreover, since the short-circuit contact portion 21b and the biasing portion 21c as in the first embodiment are not required, the structure of the short-circuit structure 20 is simple and can be manufactured at low cost.

(Third Embodiment)
The short-circuit structure 20 shown in FIGS. 14 to 17 is a structure in which the contact state maintaining unit 19 and the switching unit 21 shown in FIGS. 4 to 6 and 8 are integrated. The short-circuit structure 20 is a structure in which the contact state maintaining unit 19 is omitted from the fixed body side contact units 17A and 17B, and a switching unit 21 having the same function as the contact state maintaining unit 19 is provided to the door side contact units 15A and 15B. is there.

  Door-side contact portions 15A and 15B shown in FIGS. 14 to 17 are provided with contact portions 15a and 15b, and the contact portions 15a and 15b are electrical contacts made of a pin-shaped conductive member. The contact portions 15a and 15b can move back and forth according to the opening / closing operation of the side sliding door 6L. For example, the door side contact part 15A is a ground side (minus side) contact part, and the door side contact part 15B is a non-ground side (plus side) contact part. The door-side support portion 16 supports the door-side contact portions 15A and 15B in a retractable state. The guide portion 16c guides the door-side contact portions 15A and 15B so as to be reciprocally movable in the moving direction of the side sliding door 6L. The guide portion 16c is a through hole that horizontally penetrates the door-side support portion 16 so that the conductive portion 15c of the door-side contact portions 15A and 15B can slide with respect to the door-side support portion 16.

  The fixed body side contact portions 17A and 17B are fixed to the fixed body side support portion 18, and include contact portions 17a and 17b shown in FIGS. For example, the fixed body side contact part 17A is a ground side (minus side) contact part, and the fixed body side contact part 17B is a non-ground side (plus side) contact part. The contact portions 17a and 17b shown in FIGS. 14 to 17 are electric contacts made of a conductive member having a disk-like appearance, and unlike the contact portions 15a and 15b, they are supported on the fixed body side regardless of the opening / closing operation of the side sliding door 6L. It is fixed at a predetermined position of the portion 18. The fixed body side support portion 18 includes an insertion portion 18b shown in FIGS. 14 to 16. The insertion portion 18b is a portion into which the fixed body side contact portions 17A and 17B are inserted. The insertion portion 18b is a through hole that horizontally penetrates the fixed body side support portion 18 so that the conductive portion 17c of the fixed body side contact portion 17A, 17B is fixed in a state of being inserted into the fixed body side support portion 18. ..

  The switching unit 21 shown in FIGS. 14 to 17 includes a switch unit 21a, a short-circuit contact unit 21b, a biasing unit 21c, a protrusion amount restricting unit 21g, a biasing unit 21h, and the like. The switch portion 21a has substantially the same structure as the protrusion amount regulation portion 17d shown in FIGS. 4 to 6, and also functions as a protrusion amount regulation portion that regulates the protrusion amount of the fixed body side contact portion 17A to a predetermined amount. The switch part 21a shown in FIGS. 14 to 17 is, for example, a nut that meshes with the male screw part of the conductive part 15c, and the protrusion amount of the door side contact part 15A is adjusted by adjusting the mounting position, and the door side contact part 15A. It also functions as a timing adjustment unit that adjusts the timing at which the fixed body side contact portion 17A and the fixed body side contact portion 17A change from the non-contact state to the contact state. As shown in FIGS. 14 and 17A, the switch portion 21a has a short-circuit contact portion 21b due to the urging force from the urging portion 21c when the door side contact portion 15A and the fixed body side contact portion 17A are not in contact with each other. , And switches between the short-circuit contact portion 21b and the door-side contact portion 15A to the energized state. On the other hand, as shown in FIGS. 15, 16 and 17 (B) to (D), the switch portion 21a has the fixed body side contact portion when the door side contact portion 15A and the fixed body side contact portion 17A are in contact with each other. It is separated from the short-circuit contact portion 21b by receiving the pressing force from the portion 17A, and switches between the short-circuit contact portion 21b and the door-side contact portion 15A to the non-energized state.

  The short-circuit contact part 21b shown in FIGS. 14 to 17 is a contact with which the switch part 21a and the protrusion amount restricting part 21g come into contact with and separate from each other. The short-circuit contact portion 21b is a flat plate-shaped member that makes surface contact with the bottom surface of the switch portion 21a and the bottom surface of the protrusion amount regulation portion 21g, and is provided with a predetermined gap with the door-side contact portions 15A and 15B. It is fixed to the side of.

The biasing portion 21c shown in FIGS. 14 to 17 is a portion that biases the door-side contact portion 15A. The biasing portion 21c has substantially the same structure as the biasing portion 19a of the contact state maintaining portion 19 shown in FIGS. 4 to 8, and the side sliding door 6L has a predetermined section L as shown in FIGS. _While it is located inside ₄ , it also functions as a contact state maintaining unit that maintains the door side contact portion 15A and the fixed body side contact portion 17A in the contact state. Here, the predetermined section L ₄ shown in FIG. 17 (B) is a section in which the door side contact portion 15A and the fixed body side contact portion 17A maintain the contact state. The predetermined position P ₄ is a contact start position where the door side contact portion 15A and the fixed body side contact portion 17A start contact when the door tip rubber 7L is closed, and the door side contact portion 15A when the door tip rubber 7L is opened. And the stationary body side contact portion 17A is a separation start position where separation is started. The predetermined position P ₄ is set, for example, at a position before the closed position P ₁ toward the open position P ₂ by a predetermined distance. As shown in FIGS. 14 to 17, the urging portion 21c is sandwiched between the switch portion 21a and the door side support portion 16.

  The protrusion amount restricting portion 21g shown in FIGS. 14 to 17 has substantially the same structure as the protrusion amount restricting portion 17d shown in FIGS. 4 to 6, and is a portion that restricts the protrusion amount of the door side contact portion 15B to a predetermined amount. .. The protrusion amount restricting portion 21g is a conductor that electrically connects the short-circuit contact portion 21b and the door-side contact portion 15B, and is made of a conductive metal or synthetic resin.

The biasing portion 21h shown in FIGS. 14 to 17 is a portion that biases the door-side contact portion 15B. The biasing portion 21h has substantially the same structure as the biasing portion 19a of the contact state maintaining portion 19 shown in FIGS. 4 to 8, and the side sliding door 6L has a predetermined section L _{1 as} shown in FIGS. While it is located inside, it functions as a contact state maintaining unit that maintains the door side contact portion 15B and the fixed body side contact portion 17B in a contact state. The urging portion 21h is sandwiched between the protrusion amount restricting portion 21g and the door side support portion 16 as shown in FIGS. 14 to 17.

Next, the operation of the short-circuit structure of the detection device according to the third embodiment of the present invention will be described.
As shown in FIGS. 1, 14 and 17A, when the side sliding door 6L is stopped at the open position P ₂ , the door side contact parts 15A, 15B and the fixed body side contact parts 17A, 17B are separated from each other. ing. In this state, as shown in FIGS. 14 and 17A, the urging force of the urging portion 21c of the switching portion 21 acts on the door-side contact portion 15A, and the urging force of the urging portion 21h causes the door-side contact. Since it acts on the portion 15B, the switch portion 21a and the protrusion amount regulation portion 21g are in contact with the short-circuit contact portion 21b. Therefore, as shown in FIGS. 14 and 17A, the switching unit 21 switches the terminals 8e to 8d of the door pinch detection device 8L to the short-circuited state. Therefore, when the side sliding door 6L is outside the predetermined section L ₁ , the electric charge accumulated in the door pinch detection device 8L is discharged.

When the side sliding door 6L is closed from the open position P ₂ shown in FIG. 17 (A) to the closed position P ₁ shown in FIG. 17 (D), it is integrated with the side sliding door 6L as shown in FIG. 17 (A). Door side contact parts 15A and 15B approach toward fixed body side contact parts 17A and 17B. As a result, before the door tip rubber 7L reaches the predetermined position P ₃ shown in FIG. 17 (C), the contact portion 15a of the door side contact portion 15A becomes the fixed body side contact portion 17A as shown in FIG. 17 (B). It contacts the contact portion 17a. Therefore, the pressing force of the fixed body side contact portion 17A acts on the door side contact portion 15A, resists the urging force of the urging portion 21c of the switching portion 21, and compresses the urging portion 21c while the fixed body side contact portion 17A. Pushes in the door side contact portion 15A. As a result, as shown in FIGS. 15 and 17B, the switch portion 21a is separated from the short-circuit contact portion 21b, so that the switching portion 21 switches the terminals 8e to 8d of the door pinch detection device 8L to the insulated state.

As shown in FIG. 17 (C), when the door tip rubbers 7R and 7L reach a predetermined position P ₃ before reaching the closing position P ₁ , the contact portion 15a of the door side contact portion 15A becomes the fixed body side contact portion 17A. The contact portion 15b of the door-side contact portion 15B comes into contact with the contact portion 17b of the fixed body-side contact portion 17B while being in contact with the contact portion 17a. As a result, the door pinch detection signal output from the door pinch detection device 8L can be transmitted from the door side contact parts 15A, 15B to the door pinch determination device 10 through the fixed body side contact parts 17A, 17B.

When the side sliding door 6L is further closed from the predetermined position P ₃ shown in FIG. 17C to the closed position P ₁ , the door tip rubbers 7R and 7L are further approached, and as shown in FIG. 16, the biasing portions 21c and 21h. The stationary body side contact parts 17A, 17B further push the door side contact parts 15A, 15B against the urging force of. As shown in FIG. 17 (D), when the door tip rubbers 7R and 7L reach the closed position P ₁ , the side sliding door 6L is stopped and the door tip rubbers 7R and 7L are brought into close contact with each other. At this time, the contact portions 15a and 15b of the door side contact portions 15A and 15B and the contact portions 17a and 17b of the fixed body side contact portions 17A and 17B are kept in close contact with each other by the urging force of the urging portions 21c and 21h. Therefore, the door pinch detection signal output from the door pinch detection device 8L can be continuously transmitted from the door pinch detection device 8L to the door pinch determination device 10 through the door side contact parts 15A and 15B and the fixed body side contact parts 17A and 17B. become.

When the side sliding door 6L opens from the closed position P ₁ shown in FIG. 17 (D) to the open position P ₂ shown in FIG. 17 (A), the door tip rubbers 7R, 7L are separated from each other. At this time, as shown in FIG. 16, the contact parts 15a, 15b of the door side contact parts 15A, 15B and the contact parts 17a, 17b of the fixed body side contact parts 17A, 17B are brought into close contact with each other by the urging force of the urging parts 21c, 21h. The door-side contact portions 15A and 15B move while maintaining the above state. As shown in FIG. 17C, when the door tip rubber 7L reaches the predetermined position P ₃ , the protrusion amount restricting portion 21g of the door side contact portion 15B comes into contact with the short circuit contact portion 21b as shown in FIG. The contact portion 15B stops.

When the side sliding door 6L is further opened from the predetermined position P ₃ shown in FIG. 17 (C) to the open position P ₂ shown in FIG. 17 (A), it is integrated with the side sliding door 6L as shown in FIG. 17 (B). As a result, the door side contact portion 15B is separated from the fixed body side contact portion 17B, and the contact portion 15b of the door side contact portion 15B and the contact portion 17b of the fixed body side contact portion 17B are switched to the non-contact state. As a result, it becomes impossible to transmit the door pinch detection signal output from the door pinch detection device 8L to the door pinch detection device 10L.

At this time, as shown in FIG. 15, since the urging force of the urging portion 21c of the switching portion 21 acts on the door-side contact portion 15A, even if the door-side contact portion 15B is separated from the fixed body-side contact portion 17B. The door-side contact portion 15A and the fixed body-side contact portion 17A maintain the contact state. When the side sliding door 6L is further opened toward the open position P ₂ shown in FIG. 17A, the switch portion 21a comes into contact with the short-circuit contact portion 21b. Thus, by switching between the terminals 8e~8d of Tohasami sensing device 8L to the switching unit 21 is short-circuited state, the charge side sliding doors 6L is accumulated in Tohasami sensing device 8L when outside the predetermined interval L ₁ is Is discharged.

The short-circuit structure of the detection device according to the third embodiment of the present invention has the following effects in addition to the effects of the first embodiment.
In the third embodiment, by action urging portion 21c a biasing force to Togawa contact portions 15A, while the side sliding doors 6L are located within a predetermined interval L ₄ are, and the Togawa contact portion 15A The fixed body side contact portion 17A is maintained in a contact state. As a result, the urging portion 21c for switching the switch portion 21a shown in FIGS. 4 to 6 and the urging portion 19a for maintaining the door side contact portion 15A and the fixed body side contact portion 17A in the contact state are integrated. Can be turned into. Therefore, the urging force for switching the switch portion 21a and the urging force for maintaining the door side contact portion 15A and the fixed body side contact portion 17A in the contact state can be applied from one urging portion 21c. .. As a result, the structure is simpler than in the first embodiment, and the labor required for maintenance can be reduced, and the short-circuit structure 20 can be manufactured at a lower cost.

The present invention is not limited to the embodiments described above, and various modifications and changes can be made as described below, and these are also within the scope of the present invention.
(1) In this embodiment, the vehicle 2 has been described as an example, but the present invention is also applicable to other transportation means such as an automobile, an aircraft or a ship, and a door opening / closing device such as a home door device, an elevator or an automatic door. Can be applied. Further, in this embodiment, the case where the movable body is the side sliding doors 6R and 6L and the fixed body is the vehicle body 3 and the chassis 5a has been described as an example, but the movable body and the fixed body are limited to these members. Not something to do. For example, the present invention can be applied to a case where a signal is transmitted from the movable body side to the fixed body side when the movable body moves relative to the fixed body. Further, in this embodiment, the double sliding doors such as the side sliding doors 6R and 6L have been described as an example, but one or more sliding doors that open and close in one direction, an opening door that can be opened and closed by rotation, and a plurality of folding doors. The present invention can be applied to possible folding doors, plug doors that fit into the doorway of the vehicle body, and airtight partition doors that can hold a pressure difference between the inside and the outside.

(2) In this embodiment, a detection device including a piezoelectric pressure sensor has been described as an example, but the present invention can be applied to detection devices other than such a piezoelectric pressure sensor. For example, the present invention can be applied to other detection devices such as a piezoelectric vibration sensor, a piezoelectric acceleration sensor, an electrostatic capacitance type acceleration sensor, an electrostatic capacitance type displacement sensor, or an electrostatic capacitance type proximity sensor. In addition, in this embodiment, the case where the presence or absence of the door jam is detected by the piezoelectric rubber portion 8a has been described, but the present invention is also applied to the case where the presence or absence of the door jam is detected by a piezoelectric material other than the piezoelectric rubber portion 8a. can do.

(3) In this embodiment, the case in which the door pinch detection devices 8R and 8L are arranged on the door pin rubbers 7R and 7L has been described as an example, but the door pinch detection is performed on either one of the door pin rubbers 7R and 7L. It is also possible to dispose one of the devices 8R and 8L and omit one of the signal transmission devices 14R and 14L. Further, in this embodiment, when the door-side contact portions 15A and 15B and the fixed body-side contact portions 17A and 17B are brought into contact with each other, the ground-side door-side contact portion 15A is first brought into contact with the non-ground-side door side. Although the case where the contact portion 15B is brought into contact later is described as an example, the door side contact portion 15B on the non-ground side may be brought into contact first and the door side contact portion 15A on the ground side may be brought into contact later.

(4) In this embodiment, the door pinch determination device 10 determines that the inclusion O ₂ is not pinched between the door tip rubbers 7R, 7L, but the door pinch determination device 10 controls the determination result by this control device. It is also possible to output to 12. Further, in this embodiment, the door pinch determination device 10 determines that the inclusion O ₂ is sandwiched between the door tip rubbers 7R and 7L, but the controller 12 performs various operations based on the determination result. Can also be commanded. For example, the control device 12 commands the display device 13 to display the determination result of the door pinch determination device 10 on the screen, and the inclusion O ₂ is sandwiched between the door tip rubbers 7R and 7L. The display device 13 displays the side sliding door 6L on the monitor screen (for example, displayed in red), or reopens the side sliding doors 6R and 6L so as to pull out the inclusion O ₂ from between the door tip rubbers 7R and 7L. Alternatively, the control device 12 may instruct the door closing machine to cause the side sliding doors 6R, 6L to form a gap between the open door tip rubbers 7R, 7L.

(5) In the first embodiment, the case where the short-circuit contact portion 21b is fixed to the side surface of the door-side support portion 16 with an adhesive or a screw has been described as an example, but the fixed portion 15d and the door-side support portion 16 are also described. It is also possible to sandwich and fix the short-circuit contact portion 21b. In addition, in the third embodiment, an example is given in which the door side contact portion 15A is subjected to an urging force from the urging portion 21c to maintain the contact state between the door side contact portion 15A and the fixed body side contact portion 17A. Although described, it is not limited to such a structure. For example, the biasing portion 21c may be arranged on the fixed body side contact portion 17A, and the biasing portion 21c may apply a biasing force to the fixed body side contact portion 17A.

1 orbit 2 vehicle 3 vehicle body (fixed body)
4 Car 5 Side entrance 5a May (fixed body)
6R, 6L side sliding door (movable body)
7R, 7L Door tip rubber (tip)
8R, 8L Door pinch detection device (detection device)
8a Piezoelectric rubber part (mechanical-electrical conversion part)
8b, 8c electrode part 8d, 8e terminal 9R, 9L signal line 10 door pinch determination device 11R, 11L signal line 12 control device 13 display device 14R, 14L signal transmission device 15A, 15B door side contact part (movable body side contact part)
15a, 15b Contact part 15c Conductive part 15d Fixed part 16 Door side support part 17A, 17B Fixed body side contact part 17a, 17b Contact part 17c Conductive part 18 Fixed body side support part 19 Contact state maintenance part 19a Energizing part 20 Short circuit structure 21 Switching Part 21a Switch part 21b Short-circuit contact part 21c Energizing part 21d Switch part 21e Supporting part 21f Pressing part 21g Projection amount restricting part 21h Energizing part O ₁ , O ₂ Inclusion P ₁ Closing position P ₂ Opening position P ₃ Predetermined position L ₁ predetermined section S fulcrum G center of gravity M ₁ , M ₂ moment

Claims (6)

A short-circuit structure of a detection device for electrically short-circuiting the detection device,
The detection device outputs a detection signal from the movable body side to the fixed body side when the movable body side contact portion and the fixed body side contact portion are in contact with each other,
When the detection device does not perform a detection operation, the terminals of the detection device are switched to a short-circuited state, and when the detection device performs a detection operation, a switching unit that switches the terminals of the detection device to an insulated state is provided,
The switching unit,
A switch unit for opening and closing the terminals of the detection device,
A biasing portion for biasing the switch portion,
The switch unit is
When the movable body side contact portion and the fixed body side contact portion are not in contact with each other, the terminals of the detection device are closed by the urging force acting from the urging portion,
When the movable body side contact portion and the fixed body side contact portion are in contact with each other, the terminals of the detection device are opened by the pressing force acting from the fixed body side contact portion,
The short circuit structure of the detection device. The short-circuit structure of the detection device according to claim 1 ,
The urging portion applies an urging force to the movable body side contact portion or the fixed body side contact portion, so that the movable body side contact portion and the fixed body side are held while the movable body is located within a predetermined section. Maintaining contact with the contact,
The short circuit structure of the detection device. A short-circuit structure of a detection device for electrically short-circuiting the detection device,
The detection device outputs a detection signal from the movable body side to the fixed body side when the movable body side contact portion and the fixed body side contact portion are in contact with each other,
When the detection device does not perform a detection operation, the terminals of the detection device are switched to a short-circuited state, and when the detection device performs a detection operation, a switching unit that switches the terminals of the detection device to an insulated state is provided,
The switching unit,
A switch unit for opening and closing the terminals of the detection device,
A pressing portion for pressing the switch portion,
The switch unit is
When the movable body side contact portion and the fixed body side contact portion are not close to each other, the weight of the switch portion closes the terminals of the detection device,
When the movable body side contact portion and the fixed body side contact portion are close to each other, opening the terminals of the detection device by the pressing force applied from the pressing portion,
The short circuit structure of the detection device. The short-circuit structure of the detection device according to any one of claims 1 to 3 ,
The detection device includes a mechanical-electrical converter that converts mechanical displacement into an electrical signal by a piezoelectric effect.
The short circuit structure of the detection device. The short-circuit structure of the detection device according to any one of claims 1 to 4 ,
When the movable body is a reciprocable door, the detection device is a door pinch detection device that detects pinching of an inclusion in an end portion of the door.
The short circuit structure of the detection device. The short-circuit structure of the detection device according to any one of claims 1 to 5 ,
The switching unit,
When the movable body side contact portion and the fixed body side contact portion are not in contact with each other, the terminals of the detection device are switched to a short circuit state,
When the movable body side contact portion and the fixed body side contact portion are in contact with each other, switching between terminals of the detection device to an insulating state,
The short circuit structure of the detection device.