JP2005171731A - Opening/closing detection device for automobile door - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an opening/closing detection device for automobile door, which can detect an opening angle of the automobile door in a half-opened state. <P>SOLUTION: According to the structure of the opening/closing detection device, a detection rod 20 is arranged on an inner surface of a door panel in a manner being energized in a protruding direction by a spring 22 while its proximal end is pivoted on the inner surface of the door panel in a rotatable manner. Then a position detection sensor 26 is arranged on an end face of a vehicle body panel 12 opposed to the door panel so as to make contact with the position detection sensor 26 via its tip and move along the same at the time of opening/closing the door. The position detection sensor 26 consists of a tape switch 25 and a computing means 39. The tape switch is formed of an elastic tape 31 which is deformed when pressed by the tip of the detection rod 20, and has a conductive member 32 arranged on an inner surface thereof, and resistors 35, 36 which are opposed to the elastic tape 31 in a manner being spaced away from the same, and make contact with the conductive member 32 when the elastic tape 31 is deformed. The computing means is connected to the resistors 35, 36 to detect the position of the detection rod 29. In this manner the detection device can detect the door opening angle in the half-opened state. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an automobile door open / close detection device, and more particularly, to detect a door opening angle in a half-door state.

  Conventionally, a detection switch 1 shown in FIG. 8 is provided in Japanese Patent Application Laid-Open No. 10-92253 for detecting the open / closed state of a door of an automobile. In the detection switch 1, a contact member 3 and a male terminal 4 at the end of an electric wire w are disposed in a switch housing 2, and the contact member 3 is biased toward a door opening by a spring 5. When the door is opened, as shown in FIG. 8A, the contact member 3 is moved to the door opening side by the biasing force of the spring 5, and the contact portion 3 a protruded from both sides of the contact member 3 becomes the male terminal 4. It is detected that the door is open due to contact and conduction. Conversely, when the door is closed, as shown in FIG. 8B, when the movable member 6 provided at the tip of the contact member 3 is pressed by the door and the contact member 3 is pushed into the switch housing 2, An insulating wall 2a is interposed between the contact portion 3a of the contact member 3 and the male terminal 4, so that the contact portion 3a and the male terminal 4 are insulated, thereby detecting that the door is closed.

However, in the case of the detection switch 1, only the open state or the closed state of the door can be detected, and the half-door state cannot be detected. In a car equipped with an automatic door lock, the door is automatically locked when the door is closed, but if the door is almost closed, but the door is not yet automatically locked, the driver is May mistakenly assume that the door was closed and that the door was automatically locked. In that case, there is a risk that the automobile will be driven regardless of the state in which the door lock is not applied.
JP-A-10-92253

  This invention is made | formed in view of the said problem, and makes it a subject to detect a half door state by detecting the open angle in a half door state as well as an open state of a door, a closed state.

In order to solve the above-described problems, the present invention has a detection rod that is pivotally supported on the inner surface of a door panel and is urged by a spring in a protruding direction, while being attached to an end surface of an opposite body panel. Attach a position detection sensor, and set the tip of the detection rod to contact and move along the position detection sensor when the door is opened and closed.
The position detection sensor is deformed when pressed by the tip of the detection rod, and is disposed to face the elastic tape with a gap between the elastic tape and a conductive member on the inner surface, and is electrically conductive when the elastic tape is deformed. A vehicle switch having a tape switch including a resistor that contacts a member, and a calculation unit that is connected to the resistor and detects the position of the detection rod, and that can detect a door opening angle in a half-door state. A door open / close detection device is provided.

  With the above configuration, as the door opens and closes, the tip of the detection rod attached to the door moves in contact with the position detection sensor, so that the contact between the conductive member of the elastic tape and the resistor pressed by the detection rod Since the position moves and changes the resistance value, the contact position of the detection rod is detected by detecting the voltage value that changes as the resistance value changes, and the door opening angle in the half-door state is detected. Can do. As a result, it is possible to prevent leaving or running in a half-door state.

The detection rod protrudes from the door panel by a spring when the door is opened, and when the door is rotated in the closing direction to reach a half-door state, the tip of the detection rod presses the elastic tape of the tape switch while using the rotation support shaft as a fulcrum. It is configured to rotate in the lying down direction to the door panel side, and the tip of the detection rod comes into contact with one end side of the elastic tape even in the fully closed position of the door, and
According to the voltage generation position output via the resistor, the calculation means is preliminarily input with the door opening position, the fully closed position, the half door position position information, and the angle information at the half door position. It is preferable.

  With the above configuration, the detected contact position or door opening angle of the detection rod is compared with the previously input door opening position, fully closed position and half door position position information, or angle information at the half door position. When the door is in the open position, in the fully closed position, in the half door state, or in the half door state, the opening angle can be detected.

It is preferable that a warning is generated and / or a vehicle travel stop signal is generated at an angular position where the half door angle calculated by the calculation means is not locked by the automatic door lock.
With the above configuration, when the half-door angle is an angle position that is not locked by the automatic door lock, a warning or / and a vehicle travel stop signal is generated. It can be prevented in advance.

  As is clear from the above description, according to the present invention, as the door is opened and closed, the tip of the detection rod attached to the door is moved by contact along the position detection sensor, and thus pressed by the detection rod. Since the contact position between the conductive member of the elastic tape and the resistor moves to change the resistance value, the contact position of the detection rod is detected by detecting the voltage value that changes with the change in the resistance value, and the half door The door opening angle in the state can be detected. As a result, it is possible to prevent leaving or running in a half-door state.

Embodiments of the present invention will be described with reference to the drawings.
1 to 7 show an embodiment of the present invention.

  FIG. 1 is a schematic diagram showing an arrangement location of an automobile door open / close detection device 10. The automobile door open / close detection device 10 has a detection rod 20 attached to the inner surface of the door panel of each side door 11, and a position detection sensor 26 comprising a tape switch 25 and an arithmetic means 39 attached to the end surface of the opposite body panel 12. The calculation means 39 of the position detection sensor 26 is connected to the ECU 15 provided in the center of the vehicle body by electric wires w. The ECU 15 is also connected to warning means 17.

  As shown in FIG. 2, the door panel of each side door 11 is provided with a recess 13 on the inner surface on the indoor side, and the detection rod 20 is set in the recess 13 with the rotation support shaft 21 on the upper end side of the detection rod 20 as a fulcrum. It is attached so that it can rotate freely. As shown in FIG. 2B, a leaf spring 22 is disposed between the detection rod 20 and the inner surface 13a of the recess 13 facing the rotation direction of the detection rod 20, and the detection rod is moved by the leaf spring 22. 20 is urged outward from the recess 13. Specifically, the leaf spring 22 is bent at an intermediate position in the length direction, and one side from the bent position is fixed to the inner surface 13a of the concave portion 13, while the other side is fixed to the rotation support shaft 21 side of the detection rod 20. doing. When a load is applied to the detection rod 20 toward the recess 13, the leaf spring 22 is folded, and the detection rod 20 is accommodated in the recess 13. On the other hand, when the load on the detection rod 20 is removed, the leaf spring 22. And the detection rod 20 protrudes from the recess 13 by this biasing force.

A position detection sensor 26 is attached to the end surface of the vehicle body panel 12 at a position facing the detection rod 20 when the side door 11 is closed.
The position detection sensor 26 is deformed when pressed by the tip of the detection bar 20 and outputs a voltage that changes in accordance with the pressed position, and receives the output voltage from the tape switch 25 and receives the detection bar. An arithmetic means 39 for detecting 20 positions is provided.

As shown in FIG. 4, the tape switch 25 includes a casing 30 having a U-shaped cross section, a film substrate 37 laid inside the casing 30, and an adhesive layer on the surface of the film substrate 37. Resistor 35, 36 and conductor wires 33, 34 disposed via 38, and an elastic tape 31 made of a rubber plate that closes the opening of the housing 30 and has a conductive member 32 disposed on the inner surface thereof. In the state of load, the resistors 35 and 36 and the conductive member 32 are arranged to face each other with a gap.
As shown in FIG. 3, one resistor 35 has one end side 35 </ b> A connected to the input voltage V via the conductor line 33 and the other end side 35 </ b> B connected to the computing means 39 via the conductor line 33. ing. The other resistor 36 has one end side 36 </ b> B grounded via a conductor line 34 and the other end side 36 </ b> A connected to a computing means 39 via a conductor line 34.

Next, the operation when the side door 11 is opened and closed will be described.
When the side door 11 is in the open state, the detection rod 20 protrudes from the door panel as shown in FIG. When the side door 11 is rotated in the closing direction from this state and the half door state is reached as shown in FIG. 5B, the tip of the detection rod 20 comes into contact with the elastic tape 31 of the tape switch 25. When the side door 11 is further rotated in the closing direction, as shown in FIG. 5 (C), the tip of the detection rod 20 rotates toward the door panel toward the door panel using the rotation support shaft 21 as a fulcrum while pressing the elastic tape 31. . As shown in FIG. 5D, even if the side door 11 is fully closed, the tip of the detection rod 20 is in contact with the elastic tape 31.

At this time, as shown in FIG. 6, when the tip of the detection rod 20 presses the outer surface of the elastic tape 31 of the tape switch 25, the conductive member 32 is brought into contact conduction so as to bridge the two resistors 35 and 36. . When the side door 11 is rotated in the closing direction, the leading end of the detection rod 20 moves downward, so that the conducting positions of the resistors 35 and 36 also move downward.
Note that the operation of the side door 11 from the fully closed state to the open state is only the operation opposite to that described above, and the description thereof is omitted.

FIG. 7 schematically shows a circuit configuration when conduction is caused by contact of the conductive member 32 between the two resistors 35 and 36 arranged to face each other, and one end side 35A of the resistors 35 and 36 is shown. , 36A shows a state where the elastic tape 31 at the position of Lx is pressed and conduction between the resistors 35 and 36 is caused by contact with the conductive member 32.
In the figure, R1 indicates a resistance value at a portion from one end side 35A, 36A of the resistors 35, 36 to the position of the distance Lx, and R2 indicates from the position of the distance Lx of the resistors 35, 36 to the other end side 35B, 36B. , Rc indicates a contact resistance value between the two resistors 35 and 36 via the conductive member 32.
Since the impedance to the calculation means 39 for detecting the voltage value is set to be sufficiently large, the current flowing through the conductor wires 33 and 34 is ignored in the following.

  In the conductive state, if the voltage at the other end side 36B of the resistor 36 is V0, the output voltage at the other end side 35B of the resistor 35 is AD1, and the output voltage at one end side 36A of the resistor 36 is AD2, then the variable L, The relationship of the following mathematical formula 1 is established among Lx, R1, R2, V1, V0, AD1, and AD2.

  In the present embodiment, since the other end side 36B of the resistor 36 is grounded, the following relational expression 2 can be obtained by setting V0 = 0 in the above expression 1.

  Therefore, if the input voltage V and the voltages AD1 and AD2 acquired by the calculation means 39 are substituted into the mathematical formula 2, the distance Lx to the pressing position of the side door 11 by the detection rod 20 can be easily calculated. It is possible to detect the opening / closing position information. In other words, the side of the opening position of the side door 11, the position information of the fully closed position and the half door position, and the angle information at the half door position corresponding to the value of the distance Lx are input to the calculation means 39 in advance. It is possible to accurately know the current position of the door 11 and the door angle of the half-door state.

  The detected position information and angle information of the side door 11 are transmitted from the calculation means 39 to the ECU 15 via the electric wire w. The ECU 15 is preliminarily input with angle information that is not locked by the automatic door lock. If the angle information transmitted from the calculation means 39 corresponds to an angle that is not locked by the automatic door lock, the ECU 15 issues a warning means 17. A warning signal is transmitted to the vehicle, and the warning means 17 generates a voice warning and a vehicle running signal.

As a result, the occupant of the vehicle can know that the side door is in a half-door state and is not locked by the automatic door lock, so there is no risk of leaving the vehicle in a half-door state or driving the vehicle. .
The opening / closing detection device for the automobile door of the present invention may be provided not only on the side door of the automobile but also on the back door.

It is the schematic which shows the arrangement | positioning location of the opening / closing detection apparatus of the door for motor vehicles of embodiment of this invention. The detection stick | rod attached to the door panel is shown, (A) is a perspective view, (B) is II sectional view taken on the line. It is a disassembled perspective view of a position detection sensor. It is sectional drawing of a tape switch. (A)-(D) are drawings which show operation | movement from the open state of a side door to a fully closed state. It is drawing which shows a contact with a position detection sensor and a detection rod. It is a circuit diagram of a position detection sensor. (A) (B) is drawing which shows a prior art example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Automotive door open / close detection device 11 Side door 12 Body panel 13 Recess 15 ECU
17 Warning means 20 Detection rod 22 Leaf spring 25 Tape switch 26 Position detection sensor 30 Housing 31 Elastic tape 32 Conductive members 33 and 34 Conductor wires 35 and 36 Resistor 37 Film substrate 39 Calculation means

Claims (3)

A detection rod, whose base end is rotatably supported on the inner surface of the door panel and is urged by a spring in the protruding direction, is attached, while a position detection sensor is attached to the end surface of the opposite body panel, and the above detection is performed when the door is opened and closed. Set the tip of the bar to move along the position detection sensor,
The position detection sensor is deformed when pressed by the tip of the detection rod, and is disposed to face the elastic tape with a gap between the elastic tape and a conductive member on the inner surface, and is electrically conductive when the elastic tape is deformed. A vehicle switch having a tape switch including a resistor that contacts a member, and a calculation unit that is connected to the resistor and detects the position of the detection rod, and that can detect a door opening angle in a half-door state. Door open / close detection device. The detection rod protrudes from the door panel by a spring when the door is opened, and when the door is rotated in the closing direction to reach a half-door state, the tip of the detection rod presses the elastic tape of the tape switch while using the rotation support shaft as a fulcrum. It is configured to rotate in the lying down direction to the door panel side, and the tip of the detection rod comes into contact with one end side of the elastic tape even in the fully closed position of the door, and
According to the voltage generation position output via the resistor, the calculation means is preliminarily input with the door opening position, the fully closed position, the half door position position information, and the angle information at the half door position. The opening / closing detection apparatus of the door for motor vehicles of Claim 1.   3. The structure according to claim 1, wherein the half door angle calculated by the calculating means is configured to generate a warning and / or generate a vehicle travel stop signal at an angular position that is not locked by the automatic door lock. Open / close detection device for automobiles.

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