JP2010224968A - Opening and closing window glass breakage detector - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an opening and closing window glass breakage detector, which can surely perform breakage detection and is excellent in mountability. <P>SOLUTION: A clip 40 holds a window glass 5 capable of opening and closing an opening part of a vehicle at the end thereof. A clip-side radio device 50 for RFID system is fixed to the clip 40, and information of an IC chip is read by a reader 60 through an antenna of the radio device 50. A controller 70 detects the fall of the radio device 50 according to breakage of the window glass 5 based on whether the reading of the information of the IC chip by the reader 60 is successful or not. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to an open / close-type window glass breakage detection device.

  Various devices for detecting breakage of a window glass of a vehicle have been proposed to prevent theft (for example, Patent Document 1). This type of apparatus detects the breakage of the window glass by detecting the position (presence) of the window glass under the condition that the window glass is in the fully closed position.

JP 11-321564 A

However, as a necessary function of the breakage detection device for the openable window glass, breakage can be reliably detected, and mountability is required.
The present invention has been made under such a background, and an object of the present invention is to provide an open / close-type window glass breakage detection device capable of reliably performing breakage detection and excellent in mountability. is there.

  According to the first aspect of the present invention, there is provided a clip that sandwiches the window glass at an end portion of the window glass that can open and close an opening of the vehicle, an RFID system radio device that is fixed to the clip and has an antenna and an IC chip. The RFID system reader that reads out the information of the IC chip through the antenna of the RFID system radio, and the window glass is broken depending on whether the information of the IC chip can be read out by the RFID system reader. And a determination means for detecting a fall of the radio device for the RFID system.

  According to the first aspect of the present invention, the clip holds the end portion of the window glass, and the RFID system radio is fixed to the clip. The information on the IC chip can be read by the RFID system reader via the antenna of the RFID system radio. Then, in the determination means, the fall of the RFID system radio due to the breakage of the window glass is detected depending on whether or not the information of the IC chip can be read by the RFID system reader. As a result, damage detection is reliably performed. Moreover, since it is a wireless system, it is excellent in mountability.

  As described in claim 2, in the open / close-type window glass breakage detecting device according to claim 1, when the clips are urged in directions approaching each other at positions shifted in the plane of the window glass. It makes it easier to crush the window glass.

  The open / close-type window glass breakage detection device according to claim 1 or 2, wherein the RFID chip reader wirelessly powers the IC chip via an antenna of the RFID system radio. When transmitted, battery replacement becomes unnecessary.

  According to the present invention, it is possible to provide an open / close type window glass breakage detection device that can reliably detect breakage and is excellent in mountability.

The disassembled perspective view in the right front door in a passenger car. The schematic front view in the right front door in a passenger car. The longitudinal cross-sectional view in the AA line of FIG. The perspective view of an opening-and-closing type window glass breakage detection apparatus. (A) is a front view of an open / close-type window glass breakage detection device, and (b) is a longitudinal sectional view taken along line AA of (a). (A) is a front view of an open / close-type window glass breakage detection device, and (b) is a longitudinal sectional view taken along line AA of (a). (A) is a front view of an open / close-type window glass breakage detection device, and (b) is a longitudinal sectional view taken along line AA of (a). (A) is a front view of an open / close-type window glass breakage detection device, and (b) is a longitudinal sectional view taken along line AA of (a).

Hereinafter, an embodiment embodying the present invention will be described.
FIG. 1 is an exploded perspective view of a right front door of a passenger car, and FIG. 2 is a schematic front view of the right front door of the passenger car.

  As shown in FIG. 1, the vehicle door 1 includes an outer panel 2 and an inner panel 3. A window glass 5 made of tempered glass is disposed between the outer panel 2 and the inner panel 3. The thickness of the window glass 5 is about 3.1 mm to 5.0 mm. A door trim is attached to the inner side of the inner panel 3 of the vehicle door 1.

  A window regulator 10 that moves up and down the window glass 5 is housed inside the vehicle door 1. In the present embodiment, an X-arm type window regulator is used as the window regulator 10. The inner panel 3 is provided with a door part assembly hole 3a, and a modular panel 6 is provided so as to close the door part assembly hole 3a.

  The X arm type window regulator 10 is supported on the outdoor surface of the modular panel 6 via a base plate (fixed base) 11. That is, the shaft 13 of the lift arm 12 of the X arm type window regulator 10 is supported on the base plate 11 fixed to the outdoor surface of the modular panel 6. An electric drive unit 14 is fixed to the base plate 11. As shown in FIG. 2, the lift arm 12 integrally has a sector gear (driven gear) 15 centered on a shaft 13, and the electric drive unit 14 of FIG. 1 is engaged with the pinion 16 (FIG. 2). And its drive motor (not shown).

  In FIG. 2, the intermediate portion of the equalizer arm 18 is pivotally attached to the intermediate portion in the length direction of the lift arm 12 by a shaft 17. Guide pieces (rollers) 19 and 20 are pivotally attached to the upper end portions (tip portions) of the lift arm 12 and the equalizer arm 18 so as to be rotatable and tiltable, respectively. Roller) 21 is pivotally attached.

  The guide piece 19 of the lift arm 12 and the guide piece 20 of the equalizer arm 18 are movably fitted to the window glass bracket 22, and the guide piece 21 of the equalizer arm 18 is located on the outside of the modular panel 6 in FIG. It is movably guided to an equalizer arm bracket (posture maintenance rail) 23 fixed to the surface.

  On the other hand, a window glass holder 24 is fixed to the lower edge of the window glass 5 at the front and rear thereof. The window glass holder 24 is fixed to the lower edge of the window glass 5 in advance, and the window glass 5 having the window glass holder 24 is inserted from the gap between the outer panel 2 and the inner panel 3, and the window glass bracket 22 is tightened by bolts 25. It is fixed to.

  As shown in FIG. 2, a pair of front and rear glass runs 26 are erected. The glass run 26 is made of a rubber material. The window glass 5 is movably supported by a pair of front and rear glass runs 26 as rail members. That is, the front and rear end portions of the window glass 5 are guided by the glass run 26 and can move up and down.

  When the pinion 16 is driven forward and backward via the electric drive unit 14 of FIG. 1, the lift arm 12 swings about the shaft 13 via the sector gear 15, and as a result, the window glass bracket 22 (window glass 5) is moved. The equalizer arm 18, the guide pieces 19, 20, 21 and the equalizer arm bracket 23 are moved up and down while being held in a substantially horizontal state. Thus, the window glass 5 is raised and lowered, and the opening 4 of the vehicle can be freely opened and closed by the window glass 5.

  A longitudinal section taken along line AA in FIG. 2 is shown in FIG. In FIG. 3, an open / close-type window glass breakage detection device 30 for preventing unauthorized entry is disposed inside the vehicle door 1. The breakage detection device 30 includes a clip 40, an RFID system clip-side radio device 50, an RFID system reader 60, a controller 70 as a determination unit, and an alarm unit 80.

  FIG. 4 shows a perspective view of the openable window glass breakage detection device 30. FIGS. 5A and 5B show the open / close-type window glass breakage detecting device 30, wherein FIG. 5A is a front view and FIG. 5B is a longitudinal sectional view taken along line AA of FIG.

  In FIG. 3, the window glass 5 is disposed between the outer panel 2 and the inner panel 3 in a state of being sealed by a weather strip 7. A door trim 8 is disposed inside the inner panel 3. The clip 40 is disposed at the lower end of the window glass 5 and sandwiches the window glass 5.

  As shown in FIG. 5, the clip 40 is configured by bending a single plate spring steel plate. The clip 40 includes first and second members 41 and 42 and a bent portion (connecting portion) 43 that face each other. The first member 41 on the back side has a rectangular shape, and the second member 42 on the front side has a square shape that is narrower than the first member 41. The window glass 5 is disposed between the first member 41 on the back side and the second member 42 on the front side, and the first member 41 and the second member 42 are urged toward the window glass 5 toward each other. .

  The bent portion 43 connects the first member 41 and the second member 42. The bent portion 43 is bent in two steps, and the width of the second-stage bent portion 43b is narrower than the thickness of the window glass 5, and the end surface of the window glass 5 is in contact with the bent portion 43a of the first step.

  In FIG. 5, a rectangular through hole 44 is formed at the center of the first member 41. The second member 42 is located at a position corresponding to the through hole 44. The second member 42 is located at a location corresponding to the inside of the through hole 44 of the first member 41 as shown in FIG. 5A, and the other surface (surface 5a) as shown in FIG. 5B. ). The second member 42 is bonded to the window glass 5.

  Thus, in a state where the first member 41 and the second member 42 are in contact with each other at a position shifted in the plane of the window glass 5 between the first member 41 and the second member 42 where the window glass 5 is disposed. It is biased in the direction of approaching each other. That is, force is applied to the window glass 5 at different locations on the front surface 5a and the back surface 5b of the window glass 5. Further, the clip 40 clamps (holds) the lower end portion of the window glass 5 with a predetermined force or more.

  As shown in FIG. 4, an RFID system clip-side radio device 50 is fixed to the front side of the second member 42 of the clip 40. The clip-side radio device 50 includes a substrate 51, an IC chip 52, and a loop antenna 53. The IC chip 52 includes a transmission / reception unit and a memory, and information (ID) unique to the memory is stored.

  As shown in FIG. 3, an RFID system reader 60 is fixed to the inner panel (steel plate) 3 so as to face the RFID system clip-side radio device 50 while being spaced apart. The leader 60 penetrates the door reinforcement (steel plate) 9.

  The vertical direction is the X direction, and the horizontal direction is the Y direction. The reader 60 and the clip-side radio device 50 are arranged close to each other in the horizontal direction (Y direction). The clip 40 moves in the X direction (vertical direction), that is, falls.

  The RFID system reader 60 includes an antenna and a transmission / reception unit. The reader 60 accesses the RFID system clip-side radio 50 at predetermined time intervals, and causes the clip-side radio 50 to transmit information (ID) to the reader 60. At this time, the reader 60 and the clip-side radio device 50 are electromagnetically coupled, and power is transmitted from the reader 60 to the IC chip 52 via the antenna 53 of the radio device 50 wirelessly, so that the clip-side radio device 50 is powered. It has no passive type. The power (amount of power) supplied from the reader 60 is set to the lowest output that enables communication when the window glass 5 is fully closed (at the closest distance). In the present embodiment, the reader 60 and the clip-side radio device 50 are separated from each other by about 10 mm.

  The RFID system reader 60 reads information (ID) of the IC chip 52 through the antenna 53 of the clip-side radio device 50. A controller 70 is connected to the reader 60 as shown in FIG. The controller 70 detects the drop of the clip-side radio device 50 due to breakage of the window glass 5 depending on whether or not the information of the IC chip 52 can be read by the reader 60. In FIG. 3, an alarm unit 80 is connected to the controller 70.

Next, the operation of the open / close-type window glass breakage detection apparatus configured as described above, that is, the operation when the window glass 5 is broken (broken) will be described.
As shown in FIG. 5, the clip 40 disposed at the end of the window glass 5 sandwiches the end of the window glass 5. Specifically, the window glass 5 is sandwiched between the first member 41 and the second member 42 by the elastic force of the clip 40 itself. Further, the RFID system clip-side radio 50 is located in front of the RFID system reader 60.

  In normal times, the window glass 5 is fully closed when the occupant leaves the vehicle. The controller 70 causes the reader 60 to read the ID to the clip-side radio device 50 at regular intervals (every predetermined time). The fixed period is, for example, 1 second. Electric power is supplied from the reader 60 to the clip-side radio device 50 in this constant period reading. With this power supply, the clip-side radio device 50 operates and transmits the ID to the reader 60. The reader 60 receives the ID from the clip-side radio device 50 and sends it to the controller 70. The controller 70 determines that no glass breakage has occurred based on the ID from the clip-side radio device 50.

  If the window glass 5 is broken from this state, the strength thereof is lowered. That is, when a part of the window glass 5 made of tempered glass is broken, as shown in FIG. 6, the window glass 5 is cracked and the strength is remarkably reduced (the glass strength is reduced when the glass is broken).

  As the strength decreases, the clip 40 crushes the end portion (lower end portion) of the window glass 5 by its clamping force as shown in FIG. That is, the window glass 5 made of tempered glass is partially and completely pulverized (pulverized) by its own spring force. Thereby, as shown in FIG. 8, the clip 40 falls.

  Specifically, as shown in FIG. 6, the window glass 5 is pushed by the urging force of the second member 42 and comes into contact with the first member 41 of the clip 40. In this state, as shown in FIG. 7, the window glass 5 is pressed by the second member 42 in a state where the periphery of the through hole 44 is supported, and the window glass 5 in the through hole 44 is shattered into pieces (window glass 5 Is broken into an inverted U-shape). Then, as shown in FIG. 8, the clip 40 falls.

  In the controller 70 of FIG. 3, the ID is sent from the clip-side radio 50 before the window glass 5 is broken. However, when the clip 40 falls due to the breakage of the window glass 5, the clip-side radio 50 ID will not be sent. Thereby, the fall of the clip 40 is detected.

In this way, if the tempered glass is partially broken, it can be cracked and the strength is remarkably reduced, so that undetected and erroneous detection can be minimized.
5 includes a first member 41 and a second member 42 which are formed by bending and opposing a steel plate for a leaf spring. Between the first member 41 and the second member 42 where the window glass 5 is disposed. The first member 41 and the second member 42 are biased in a direction approaching each other in a state where they are in contact with each other at a position shifted in the plane of the window glass 5. As a result, a force is applied to the window glass 5 at different locations on the front surface 5a and the back surface 5b of the window glass 5, so that the window glass is accompanied by breakage of the window glass 5 (with a decrease in the strength of the window glass 5). It is possible to reliably detect the breakage of the window glass 5 by reliably crushing the end portion of the window 5.

  Further, the contact portion of the first member 41 of the clip 40 of FIG. 5 with the window glass 5 is separated from the contact portion of the second member 42 with the window glass 5 in the plane of the window glass 5 and the first member. The contact portion of the second member 42 with the window glass 5 is connected around the contact portion of the second member 42 with the window glass 5. Therefore, as shown in FIG. 6, the window glass 5 is pressed in a state where the window glass 5 is in contact with the first member 41 around the contact portion of the second member 42 with the window glass 5. That is, in the first member 41, the window glass 5 is pressed inside the inner periphery of the through hole 44 in a state where the window glass 5 is supported around the through hole 44. Thereby, as shown in FIG. 7, the edge part of the window glass 5 can be easily grind | pulverized and the clip 40 can be reliably dropped.

  In FIG. 3, when the break of the window glass 5 is detected by detecting the fall of the clip 40 by the controller 70 (depending on whether or not the ID of the reader 60 can be read), the controller 70 activates the alarm unit 80. And issue an alarm.

As described above, according to the present embodiment, the following effects can be obtained.
(1) The RFID-side radio device 50 for RFID system is fixed to the clip 40, the information of the IC chip 52 is read by the reader 60 via the antenna 53 of the radio device 50, and the information of the IC chip 52 is read by the reader 60 in the controller 70. The fall of the radio device 50 due to the breakage of the window glass 5 is detected depending on whether or not the data can be read out. Thereby, damage detection can be performed reliably. Moreover, since it is a wireless system, it is excellent in mountability.

  Here, in the case of adopting a system in which a magnet is attached to the clip 40 and a magnetic sensor is attached to the door panel side to detect the fall of the clip (magnet) due to glass breakage by magnetic fluctuation in the magnetic sensor, the clip and sensor Must be installed very close to each other, and the magnetic force generated by the magnet is influenced by the door reinforcement (steel plate) (the influence of the magnetic field being deformed by the reinforcement), and the sensor to be installed The mounting requirements of will be strict. Specifically, it is necessary to increase the distance from the sensor front end to the door reinforcement, and therefore it is difficult to secure a portion for mounting the sensor in a limited space inside the door. Further, the clip is equivalent to the outside of the vehicle, and foreign objects such as iron sand are likely to adhere to the magnet fixed to the clip after long-term use.

  On the other hand, in the present embodiment, the clip 40 is provided with the RFID system clip-side radio 50 (passive type that also supplies power from the reader 60) and the RFID panel reader 60 is provided on the door panel. Information on the clip-side radio device 50 is read from the reader 60. At this time, reading is performed with a communicable output only when the distance between the reader 60 and the clip-side radio device 50 is very short. Then, due to the occurrence of the glass break, the clip 40 falls and the reading of the clip-side radio device 50 is blocked, thereby detecting the glass break.

  Therefore, since the magnetic force is not affected by the door reinforcement, it is not necessary to increase the distance between the door reinforcement 9 and the tip of the reader 60, and the mounting requirements can be greatly eased. That is, in the magnet type in FIG. 3, the door reinforcement 9 needs to be separated from the clip 40 to the position indicated by the two-dot chain line, but in the present embodiment which is a radio wave system, the door reinforcement 9 is provided to the position indicated by the solid line. 9 can be placed close together. Thereby, door strength by reinforcement can be secured sufficiently. Moreover, in this embodiment which is a radio wave system, iron sand does not adhere to the clip 40.

(2) Since the clip 40 is biased in the direction approaching each other at a position shifted in the plane of the window glass 5, the window glass 5 is easily crushed.
(3) The RFID system clip-side radio device 50 and the RFID system reader 60 are passive types, so that battery replacement is not necessary. Moreover, it is preferable also when aiming at size reduction.

The embodiment is not limited to the above, and may be embodied as follows, for example.
In the above embodiment, the power supplied from the reader 60 is set to the lowest output that enables communication with the window glass 5 in the fully closed state (at the closest distance), but instead, the power supplied from the reader 60 is increased. Thus, reading can be performed even when the window glass is slightly opened.

  That is, as shown in FIG. 2, even when the window glass 5 is not in the fully closed position, the transmission / reception method using radio waves by the RFID system is used. 5 breakage can be detected. That is, in the prior art (Patent Document 1), since the movement of the window glass when the window glass was fully closed was detected, it was not possible to detect the breakage of the window glass when the window glass was not in the fully closed position. In the present embodiment, it is possible to detect breakage of the window glass even when the window glass is not in the fully closed position by opening the window glass for ventilation such as slightly opening the window for ventilation when parking in hot weather. As a usage, when the window glass opening degree inspection mode is set when the door lock command signal is inputted in the controller 70 and the ID can be read by the reader 60, it is understood that the opening degree of the window glass is below a predetermined amount. When the ID cannot be read by the reader 60, it can be seen that the opening degree of the window glass is a predetermined amount or more. And the controller 70 sets a glass breakage detection mode that the opening degree of a window glass is below a predetermined amount. On the other hand, the controller 70 issues an alarm when the opening degree of the window glass is equal to or larger than a predetermined amount.

-Although it was set as the passive type RFID system, it is good also as an active type, ie, the system structure which mounts the battery in the clip side radio | wireless machine.
Although the X-arm type window regulator is used as the window regulator, a cable-type window regulator may be used.

The driving means is not limited to the one having a motor, but may be manually operated by a passenger.
・ The window glass breakage detector was applied to the right front door of passenger cars, but it goes without saying that it can also be applied to other side doors. You may apply to the opened and closed type glass roof.

  -Although the clip 40 was installed in the lower end part of the window glass 5, you may install not only in this but in the lower part in the side surface of the window glass 5, for example. In short, what is necessary is just to install in the place which is not conspicuous inside the vehicle door 1 among the edge parts of a window glass.

  DESCRIPTION OF SYMBOLS 4 ... Opening part, 5 ... Window glass, 30 ... Opening-and-closing type window glass breakage detection apparatus, 40 ... Clip, 50 ... Clip side radio for RFID system, 52 ... IC chip, 53 ... Antenna, 60 ... Reader for RFID system, 70: Controller.

Claims (3)

A clip that sandwiches the window glass at the end of the window glass that can freely open and close the opening of the vehicle;
RFID system radio fixed to the clip and having an antenna and an IC chip;
An RFID system reader that reads information of the IC chip via an antenna of the RFID system radio;
Determining means for detecting a fall of the radio for the RFID system due to breakage of the window glass depending on whether or not the information of the IC chip can be read by the reader for the RFID system;
An opening / closing type window glass breakage detecting device characterized by comprising:   The open / close-type window glass breakage detection device according to claim 1, wherein the clips are biased toward each other at positions shifted in a plane of the window glass.   The open / close-type window glass breakage detection device according to claim 1 or 2, wherein power is transmitted from the RFID system reader to the IC chip wirelessly via an antenna of the RFID system radio.

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