JP2010146106A - Window glass breakage detector for automobile - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a window glass breakage detector for an automobile, allowing easy and certain takeout of electrodes from electrodes provided on a glass plate. <P>SOLUTION: Electro-conductive terminals 43, 44 having cylindrical parts 43d, 44d are connected with electric wires 61, 62 of a harness. The cylindrical coil spring electrodes 45, 46 are disposed between the electro-conductive terminals 43, 44 and the electrodes 33, 34 of a conductor pattern in a compressed state, one end side of the cylindrical coil spring electrode 45, 46 is positioned outside the cylindrical part 43d, 44d of the electro-conductive terminal 43, 44 and spirally contacts with the outer circumferential face of the cylindrical part 43d, 44d of the electro-conductive terminal 43, 44, and a portion projecting from the cylindrical part 43d, 44d of the electro-conductive terminal 43, 44 in the other end side spirally contacts with the electrode 33, 34 of the conductor pattern 32. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a glass breakage detection device for an automobile window.

  Conventionally, in order to prevent the window glass of a car from being cracked during parking and the vehicle from being stolen or being damaged by the storm on the vehicle, it is detected that the window glass has been broken and an alarm means is provided. It has been proposed to operate.

As a device of this type, in Patent Document 1, at least one resistor of a voltage dividing resistor is installed on the surface or inside of glass, and a glass breakage detection device that determines a glass breakage when the partial pressure value changes. Is disclosed.
JP 2003-141649 A

A specific configuration for taking out the electrode from the electrode taking-out portion on the surface of the glass and connecting it to an external device is not specified.
The present invention has been made under such a background, and an object of the present invention is to provide a glass crack detection device for an automobile window that can easily and reliably take out an electrode from an electrode provided on a glass plate. It is in.

  According to the first aspect of the present invention, the glass pattern of the window for an automobile is extended and electrically connected to the conductor pattern having the electrode and the electrode of the conductor pattern, and the glass breakage is detected from the energized state of the conductor pattern. In an automotive window glass breakage detecting device, comprising: a conductive terminal connected to the electric wire and having a cylindrical portion; and compressed between the conductive terminal and the electrode of the conductor pattern. The one end side spirally contacts the outer peripheral surface of the cylindrical portion of the conductive terminal, and the portion protruding from the cylindrical portion of the conductive terminal on the other end side spirals to the electrode of the conductive pattern The gist is provided with a cylindrical coil spring electrode in contact therewith.

  According to the first aspect of the present invention, the conductive terminal is connected to the electric wire, and the cylindrical coil spring electrode is disposed in a compressed state between the conductive terminal and the electrode of the conductive pattern, and the conductive terminal Is electrically connected to the electrode of the conductor pattern via a cylindrical coil spring electrode. Here, in the cylindrical coil spring electrode, one end side is in spiral contact with the outer peripheral surface of the cylindrical portion of the conductive terminal, and the other end side is in spiral contact with the electrode of the conductor pattern. Therefore, the contact area between the cylindrical coil spring electrode and the cylindrical portion of the conductive terminal and the contact area between the cylindrical coil spring electrode and the electrode of the conductor pattern can be increased. Thereby, an electrode can be taken out easily and reliably from the electrode provided in the glass plate.

The gist of the invention according to claim 2 is that in the glass breakage detecting device for an automobile window according to claim 1, the glass plate is configured so as not to be opened and closed.
According to the second aspect of the present invention, since the glass plate is fixed so that it cannot be opened and closed, the conductor pattern having electrodes does not move. Therefore, stable operation of the glass breakage detection device can be ensured.

  According to a third aspect of the present invention, in the glass breakage detecting device for an automobile window according to the second aspect, the conductive terminal and the cylindrical coil spring electrode are supported in a case, and the case is supported on the glass plate. The gist is that it is bonded and sandwiched between the glass plate and the vehicle body by the spring force of the cylindrical coil spring electrode.

  According to invention of Claim 3, even if the adhesive force of a case is weak with the urging | biasing force (spring force) of a cylindrical coiled spring electrode, a case can be fixed.

  ADVANTAGE OF THE INVENTION According to this invention, an electrode can be taken out easily and reliably from the electrode provided in the glass plate.

(First embodiment)
Hereinafter, a first embodiment of the present invention will be described with reference to the drawings.
As shown in FIG. 1A, triangular windows 12 are provided at the rear of the vehicle 11 on both the left and right sides (only the left side is shown). The triangular window 12 is a window that cannot be opened and closed. Moreover, in the triangular window 12, the glass plate 13 which cracks as a whole when a part is damaged is used for the window glass. Tempered glass is used as the glass plate 13.

  FIG. 1B is a partial cross-sectional view of the vicinity of the left triangular window 12 corresponding to the line AA in FIG. As shown in FIG. 1B, the glass plate 13 of the triangular window 12 is fixed to a vehicle body (body) 15 via an adhesive (glass adhesive) 14 at the periphery. In addition, the thickness of the glass plate 13 is about 3.1 mm-5.0 mm.

  As shown in FIG. 1 (b), the glass breakage detection device 20 is located on the vehicle body 15 at a position corresponding to the peripheral edge of the glass plate 13 and inside the adhesive 14 with respect to the peripheral edge of the glass plate 13. Is provided. The disconnection film 30 and the main body 40 constituting the glass breakage detection device 20 are covered with the interior 16 of the vehicle 11.

Hereinafter, the glass breakage detection apparatus 20 will be described in detail.
FIG. 2 shows a plane and a cross section of the broken film 30. FIG. 3 is an exploded perspective view of the main body 40 of the glass breakage detection apparatus. FIG. 4 is a plan view of the main body 40 of the glass breakage detection apparatus. FIG. 5 is a cross-sectional view taken along line AA of FIG. 6 is a cross-sectional view taken along line BB in FIG. FIG. 4 is a plan view with the upper case 42 in FIGS. 5 and 6 removed.

  7 is a cross-sectional view taken along the line AA of FIG. 4 in a state before the main body 40 of the glass breakage detection device 20 is mounted on the vehicle. Similarly, FIG. 8 is a cross-sectional view taken along line BB of FIG. 4 in a state before the main body 40 of the glass breakage detecting device 20 is mounted on the vehicle.

As shown in FIG. 1B, the glass breakage detection device 20 includes a disconnection film 30, a main body 40, and a determination device 50.
As shown in FIG. 2, the disconnection film 30 is configured by forming a conductive pattern 32 made of a fine line inside a thin resin film 31 by printing. Since the conductor pattern 32 is a fine pattern, it is easy to disconnect. One conductor pattern 32 made of fine wires has wide electrodes 33 and 34 at both ends thereof. In the electrodes 33 and 34, openings 35 and 36 of the resin film 31 are formed, and the electrodes 33 and 34 are exposed through the openings 35 and 36. This exposed portion is an electrode extraction portion.

  The disconnection film 30 shown in FIG. 2 is affixed to the glass plate 13 as shown in FIG.1 (b), and, thereby, the conductor pattern 32 which has the electrodes 33 and 34 is extended in the glass plate 13 of the window for motor vehicles. Has been. And if the glass plate 13 is cracked, the conductor pattern 32 which consists of a thin line of the disconnection film 30 will be disconnected by the micro crack.

  Thus, since the disconnection film 30 is affixed on the glass plate 13, since it becomes unnecessary to print a conductor pattern directly on the glass plate 13, cost reduction can be aimed at. Moreover, it can attach with respect to the glass plate without a conductor pattern by retrofit. Further, by forming the conductive pattern 32 made of a thin wire, it is possible to detect even if the glass plate 13 is not completely crushed due to glass cracking.

  As shown in FIG. 3, the main body 40 includes a lower case 41, an upper case 42, a pair of conductive terminals 43 and 44, and cylindrical coil spring electrodes 45 and 46 provided on the conductive terminals 43 and 44. ing. The lower case 41 has a box shape with an upper surface opened. The upper case 42 has a box shape with an open bottom surface.

  As shown in FIGS. 5 and 6, the upper case 42 is disposed so as to close the upper surface opening of the lower case 41, and the upper case 42 covers the side surface of the lower case 41 from the outside. As a result, the lower case 41 and the upper case 42 constitute a box-shaped case C1. The case C1 (lower case 41) is bonded to the broken film 30 (glass plate 13) by the double-sided tape 65.

  Conductive terminals 43 and 44 and cylindrical coil spring electrodes 45 and 46 are arranged in the case C1. The conductive terminals 43 and 44 are arranged side by side in FIG. The conductive terminal 43 and the conductive terminal 44 are made of a conductive plate material. The conductive terminals 43 and 44 have square plate portions 43a and 44a.

  As shown in FIG. 3, in the conductive terminal 43, mounting step portions 43b are formed at both ends of the square plate portion 43a, and the mounting step portions 43b are fitted into the recesses 41d and 41e of the lower case 41. . The mounting step 43b is positioned so as to be movable in the vertical direction in FIGS. 5 and 6 in the recesses 41d and 41e of the lower case 41. Similarly, in the conductive terminal 44, mounting step portions 44b are formed at both side ends of the square plate portion 44a, and the mounting step portions 44b are fitted into the recesses 41f and 41g of the lower case 41. The mounting step 44b is positioned so as to be movable in the vertical direction in FIGS. 5 and 6 in the recesses 41f and 41g of the lower case 41. Thereby, the conductive terminal 43 and the conductive terminal 44 are positioned so as to be movable in the vertical direction.

  The square plate portion 43a is provided with a harness caulking portion 43c, and the end portion of the first electric wire 61 in the harness 60 is caulked and fixed to the harness caulking portion 43c. Similarly, a harness caulking portion 44c is provided in the square plate portion 44a, and an end portion of the second electric wire 62 in the harness 60 is caulked and fixed to the harness caulking portion 44c. The front end portion of the electric wire 61 is joined to the square plate portion 43a by solder H. Further, the tip end portion of the electric wire 62 is joined to the square plate portion 44 a by solder H.

  As shown in FIGS. 3 and 7, a bottomed cylindrical portion 43 d that protrudes downward is integrally formed at the center of the rectangular plate portion 43 a of the conductive terminal 43. Similarly, a bottomed cylindrical portion 44 d that protrudes downward is integrally formed at the center of the square plate portion 44 a of the conductive terminal 44.

  As shown in FIGS. 7 and 8, a cylindrical coil spring electrode 45 is disposed on the outer periphery of the cylindrical portion 43 d of the conductive terminal 43. Similarly, a cylindrical coil spring electrode 46 is disposed on the outer periphery of the cylindrical portion 44 d of the conductive terminal 44.

  The cylindrical coil spring electrodes 45 and 46 are formed by winding a conducting wire in a spiral shape. The cylindrical coil spring electrodes 45 and 46 are in contact with the outer peripheral surfaces of the cylindrical portions 43d and 44d, and from the cylindrical portions 43d and 44d. The lower part is also wound so that the diameter becomes smaller toward the tip. And in the state which has arrange | positioned the main body 40 of the glass crack detection apparatus via the disconnection film 30 between the glass plate 13 and the vehicle body 15, as shown in FIG.1 (b), cylindrical coil spring electrodes 45 and 46 are provided. Are disposed between the conductive terminals 43 and 44 and the electrodes 33 and 34 of the conductor pattern 32 in a state where the cylindrical coil spring electrodes 45 and 46 are compressed as shown in FIGS. In this state, one end side of the cylindrical coil spring electrodes 45 and 46 is in spiral contact with the outer peripheral surface of the cylindrical portions 43d and 44d of the conductive terminals 43 and 44, and the cylindrical shape of the conductive terminals 43 and 44 on the other end side. The portions protruding from the portions 43d and 44d come into contact with the electrodes 33 and 34 of the conductor pattern 32 in a spiral shape.

  Therefore, the electrical connection between the cylindrical coil spring electrodes 45 and 46 and the conductive terminals 43 and 44 is performed in a spiral contact state on the outer peripheral surface of the cylindrical portions 43d and 44d. , 46 and the electrodes 33, 34 of the disconnection film 30 are made in a state where the electrodes 33, 34 are in spiral contact with each other.

  As shown in FIG. 3, the lower case 41 and the upper case 42 have notches 41a and 42a through which the harness 60 passes, and the lower case 41 and the double-sided tape 65 have a cylindrical coil spring electrode 45. , 46 through which through holes 41c, 65a are formed.

The case C <b> 1 is sandwiched between the glass plate 13 and the vehicle body 15 by the spring force generated by the cylindrical coil spring electrodes 45 and 46.
One ends of the two electric wires 61 and 62 of the harness 60 are electrically connected to the electrodes 33 and 34 of the conductor pattern 32 via the conductive terminals 43 and 44 and the cylindrical coil spring electrodes 45 and 46. Further, the other ends of the two electric wires 61 and 62 of the harness 60 are connected to the determination device 50 as shown in FIG. The determination device 50 is connected to the electrodes 33 and 34 of the disconnection film 30 via the harness 60 and the main body 40. In the determiner 50, a glass break can be detected from the energized state of the conductor pattern 32.

Next, the effect | action of the glass crack detection apparatus 20 comprised in this way is demonstrated.
When a part of the glass plate 13 is broken, the entire glass plate 13 is cracked. Even if the glass plate 13 is broken without being vibrated using a tool, the conductor pattern 32 made of a fine line is cut by a crack at the sticking portion of the broken film 30. The determination unit 50 detects the conduction of the conductor pattern 32 made of a thin line, and detects the disconnection when the conduction is stopped. Thereby, it is judged that the glass is broken.

Then, the determination device 50 notifies the outside of glass breakage (occurrence of abnormality) with an alarm device or an alarm lamp.
According to this embodiment, the following effects can be obtained.

  (1) The two electric wires 61 and 62 of the harness 60 are connected to the conductive terminals 43 and 44 having the cylindrical portions 43d and 44d, and between the conductive terminals 43 and 44 and the electrodes 33 and 34 of the conductor pattern 32. The cylindrical coil spring electrodes 45 and 46 are arranged in a compressed state, and one end side of the cylindrical coil spring electrodes 45 and 46 is in spiral contact with the outer peripheral surface of the cylindrical portions 43d and 44d of the conductive terminals, and others The part which protrudes from the cylindrical parts 43d and 44d of the conductive terminal in the end side is contacting the electrodes 33 and 34 of the conductor pattern 32 in a spiral shape. Therefore, the contact area between the cylindrical coil spring electrodes 45 and 46 and the cylindrical portions 43d and 44d of the conductive terminals and the contact area between the cylindrical coil spring electrodes 45 and 46 and the electrodes 33 and 34 of the conductor pattern 32 are increased. can do. Thereby, an electrode can be easily and reliably taken out from the electrode provided on the glass plate 13.

  (2) The glass plate 13 is configured so as not to be opened and closed. Accordingly, the glass breakage detection device 20 such as the case C1 of the main body 40 does not move, and the electric wires 61 and 62 (harness 60) extending from the case C1 can be avoided from being pulled. Operation can be secured.

  (3) The conductive terminals 43 and 44 and the cylindrical coil spring electrodes 45 and 46 are supported in the case C1, and the case C1 is bonded to the glass plate 13 and is cylindrical between the glass plate 13 and the vehicle body 15. It is clamped by the spring force by the coil spring electrodes 45 and 46. Therefore, the case C1 (lower case 41, upper case 42) is disposed between the glass plate 13 and the vehicle body 15, and the case C1 is bonded to the double-sided tape 65 by the urging force (spring force) of the cylindrical coil spring electrodes 45 and 46. The case C1 can be fixed even if the force (sticking force) is weak.

(4) The disconnection film 30 can be attached to the glass plate 13 for automobiles having a curved surface. Therefore, it is suitable for use in a glass breakage detection device for an automobile window as compared with a case where a hard member that is difficult to stick to an automobile glass plate 13 is used.
(Second Embodiment)
Next, the second embodiment will be described focusing on the differences from the first embodiment.

  FIG. 9 shows a glass crack detection device of this embodiment. FIG. 10 shows a plane cross section of the main body 70 of the glass crack detection device. FIG. 11 shows a cross section taken along line AA of FIG. 12A, 12B, and 12C are perspective views of components constituting the main body 70 of the glass breakage detecting device.

  As shown in FIGS. 12B and 12C, the case C <b> 1 of the main body 70 includes a case main body 71 and a cover 72. The case body 71 has a box shape with an open bottom surface. The opening of the case body 71 is closed by the cover 72. And the case C2 (cover 72) is adhere | attached on the disconnection film 30 (glass plate 13) with the double-sided tape 66 of FIG. The case main body 71 is formed with a harness extracting cylindrical portion 71a.

  In the case C2, a pair of conductive plate materials (spring electrodes) 74 and 75 and conductive elastic rings (conductive elastic bodies) 76 and 77 provided on the conductive plate materials 74 and 75 are housed. The conductive plate materials 74 and 75 are configured by bending a plate material having spring properties. The conductive plate members 74 and 75 are bent at the short sides of the rectangular first plate portions 74a and 75a to which the two electric wires 61 and 62 of the harness 60 are connected, and the rectangular first plate portions 74a and 75a. It has the rectangular 2nd plate parts 74b and 75b.

  As shown in FIGS. 11 and 12A, positioning protrusions 74d are integrally formed at four locations on the first plate portion 74a, and each protrusion 74d extends toward the ceiling surface of the case body 71. Has been. The projecting piece 74d is in contact with the ceiling surface of the case main body 71 (the inner surface of the case C2), thereby preventing the first plate portion 74a from moving upward in FIG. Similarly, positioning protrusions 75d are integrally formed at four locations on the first plate portion 75a, and each protrusion 75d extends toward the ceiling surface of the case body 71. The projecting piece 75d is in contact with the ceiling surface of the case body 71 (the inner surface of the case C2), so that the first plate portion 75a does not move upward in FIG.

  In addition, case pressing protrusions 74e are integrally formed at two locations on the first plate portion 74a, and both protrusions 74e extend toward the inner surface of the case body 71. The projecting piece 74e is in contact with the inner side surface of the case main body 71 (the inner surface of the case C2), thereby preventing the first plate portion 74a from moving left and right. Similarly, case pressing protrusions 75e are integrally formed at two locations on the first plate portion 75a, and both protrusions 75e extend toward the inner surface of the case body 71. The projecting piece 75e is in contact with the inner surface of the case body 71 (the inner surface of the case C2), so that the first plate portion 75a does not move to the left and right.

As shown in FIG. 12A, the rectangular first plate portions 74 a and 75 a and the second plate portions 74 b and 75 b are configured by folding the belt plate into a “<” shape.
In the first plate portions 74a and 75a, the ends of the two electric wires 61 and 62 of the harness 60 are fixed by caulking by the harness caulking portions 74c and 75c. The front end portion of the electric wire 61 is joined to the first plate portion 74 a by solder H. Further, the tip end portion of the electric wire 62 is joined to the first plate portion 75a by the solder H. That is, the base ends of the conductive plate materials 74 and 75 as spring electrodes are connected to the electric wires 61 and 62. The harness 60 communicates the inside and outside of the case C2 through the harness extraction cylindrical portion 71a of the case body 71.

  Conductive elastic rings 76 and 77 are fixed to the end portions of the second plate portions 74b and 75b. Specifically, belt-shaped ring stoppers 74f and 75f extend from the second plate portions 74b and 75b, and the conductive elastic rings 76 and 77 are caulked and fixed by the belt-shaped ring stoppers 74f and 75f. The conductive elastic rings 76 and 77 have an annular shape, are made of a conductive resin, and have elasticity (flexibility).

  As shown in FIG. 9, in a state where the main body 70 of the glass breakage detecting device is disposed between the glass plate 13 and the vehicle body 15 via the disconnection film 30, the conductive plate members 74 and 75 are arranged as shown in FIG. The two plate portions 74b and 75b are arranged in a compressed state against the spring force. In other words, the conductive plate members 74 and 75 are arranged with their tips urged toward the electrodes 33 and 34 of the conductor pattern 32.

  The conductive elastic ring 76 as a conductive elastic body is disposed in a state of being compressed and deformed between the distal end portions of the conductive plate members 74 and 75 as spring electrodes and the electrodes 33 and 34 of the conductor pattern 32. Yes. That is, the conductive plate materials (spring electrodes) 74 and 75 are deformed and used as shown in FIG. 11 in a state where the main body 70 is bonded to the disconnection film 30 (glass plate 13), and the electrodes 33 and 34 of the disconnection film 30 are used. Giving an urging force to The conductive elastic rings 76 and 77 fixed to the conductive plates 74 and 75 are deformed and used as shown in FIG. 11 in the state where the main body 70 is bonded to the disconnection film 30 (glass plate 13). A biasing force is applied to the electrodes 33 and 34.

  Therefore, the electrical connection between the wires 61 and 62 of the harness 60 and the electrodes 33 and 34 of the disconnection film 30 is caused by the biasing force by the conductive plate materials 74 and 75 (plate spring) and the biasing force by the conductive elastic rings 76 and 77. It is performed while being pressed. At this time, since the conductive elastic rings 76 and 77 are crushed and used, the contact area can be increased.

As shown in FIGS. 11 and 12, the cover 72 and the double-sided tape 66 are formed with through holes 72 a and 66 a through which the conductive elastic rings 76 and 77 pass.
As described above, the conductive plates 74 and 75 are connected to the electric wires 61 and 62, and the conductors 32 and 34 are connected to the electrodes 33 and 34 of the conductor pattern 32 via the tips of the conductive plates 74 and 75 and the conductive elastic rings 76 and 77. It is electrically connected to the electrodes 33 and 34 of the pattern 32. Here, the tips of the conductive plates 74 and 75 are arranged in a state of being biased toward the electrodes 33 and 34 of the conductor pattern 32, and the conductive elastic rings 76 and 77 are connected to the tips of the conductive plates 74 and 75. The conductor pattern 32 is disposed between the electrodes 33 and 34 in a compressed and deformed state. Therefore, the contact is made by the urging force by the conductive plate members 74 and 75 and the urging force by the conductive elastic rings 76 and 77, and the contact can be made strongly. Thereby, an electrode can be easily and reliably taken out from the electrode provided on the glass plate 13.

  The conductive plate members 74 and 75 and the conductive elastic rings 76 and 77 are supported in the case C2, and the case C2 is bonded to the glass plate 13 with a double-sided tape 66 and between the glass plate 13 and the vehicle body 15. Are sandwiched by the spring force of the conductive plate members 74 and 75 and the elastic force of the conductive elastic rings 76 and 77. Accordingly, the case C2 (case body 71, cover 72) is disposed between the glass plate 13 and the vehicle body 15, and the case C2 is fixed by the urging force of the conductive plate materials 74 and 75 and the conductive elastic rings 76 and 77. Can do.

The embodiment is not limited to the above, and may be embodied as follows, for example.
The glass plate 13 is not limited to the triangular window 12 and may be applied to other window glass that uses a glass plate and cannot be opened and closed. For example, the present invention may be applied to a rear window, a rear side window, a window glass of a hatchback door, a sunroof glass, or a front window.

-Although the disconnection film 30 was affixed on the glass plate 13 and the conductor pattern was extended in the glass plate 13, you may print a conductor pattern directly on a glass plate.
-The glass breakage detection device is not limited to a window glass that cannot be opened and closed, but may be attached to a window glass that can be opened and closed.

Next, technical ideas that can be grasped from the second embodiment will be described below.
(A) a conductor pattern extending on a glass plate of an automobile window and having an electrode;
Electrically connected to the electrode of the conductor pattern, and an electric wire for detecting a glass crack from the energized state of the conductor pattern;
In a glass breakage detection device for automobile windows equipped with
A spring electrode that is configured by bending a plate material having a spring property, the base end is connected to the electric wire, and the tip is biased toward the electrode of the conductor pattern;
A conductive elastic body having elasticity and disposed in a state of being compressed and deformed between the tip of the spring electrode and the electrode of the conductor pattern;
An apparatus for detecting a broken glass in a window for an automobile.

Thereby, an electrode can be taken out easily and reliably from the electrode provided in the glass plate.
(B) The glass breakage detecting device for an automobile window according to (a), wherein the glass plate is configured so as not to be opened and closed.

  Thereby, the glass plate is comprised so that opening and closing is impossible. Therefore, the glass breakage detecting device does not move, and it is possible to avoid the electric wire extending from the main body from being pulled, so that stable operation of the glass breakage detecting device can be ensured.

  (C) The spring electrode and the conductive elastic body are supported in a case, and the case is bonded to the glass plate, and the spring force and conductive elasticity by the spring electrode are provided between the glass plate and the vehicle body. The glass breakage detection device for an automobile window according to (b), wherein the glass breakage detection device is sandwiched by an elastic force of a body.

  Thereby, a case can be arrange | positioned between a glass plate and a vehicle body, and a case can be fixed with the urging | biasing force of a spring electrode and a conductive elastic body.

(A) is a schematic perspective view which shows the rear part of the passenger car in this embodiment, (b) is a fragmentary sectional view of the triangular window vicinity of the left side corresponding to the AA line of (a). The figure which shows the plane and cross section of a disconnection film. The disassembled perspective view of the main body of a glass crack detection apparatus. The top view of the main body of a glass crack detection apparatus. Sectional drawing in the AA of FIG. Sectional drawing in the BB line of FIG. Sectional drawing in the AA line of FIG. 4 in the state before mounting | wearing the vehicle with the main body of a glass crack detection apparatus. Sectional drawing in the BB line of FIG. 4 in the state before mounting | wearing the vehicle with the main body of a glass crack detection apparatus. The figure which shows the glass crack detection apparatus in 2nd Embodiment. The plane sectional view of the main part of a glass crack detection device. Sectional drawing in the AA of FIG. (A), (b), (c) is a perspective view of the components which comprise the main body of a glass breakage detection apparatus.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 13 ... Glass plate, 20 ... Glass crack detection apparatus, 32 ... Conductor pattern, 33, 34 ... Electrode, 43, 44 ... Conductive terminal, 43d, 44d ... Cylindrical part, 45, 46 ... Cylindrical coil spring electrode, C1 ... Case.

Claims (3)

A conductor pattern extending on a glass plate of an automobile window and having an electrode;
Electrically connected to the electrode of the conductor pattern, and an electric wire for detecting a glass break from an energized state of the conductor pattern,
In a glass breakage detection device for automobile windows equipped with
A conductive terminal connected to the electric wire and having a cylindrical portion;
It is arranged in a compressed state between the conductive terminal and the electrode of the conductor pattern, one end side spirally contacts the outer peripheral surface of the cylindrical portion of the conductive terminal and the conductive terminal on the other end side A cylindrical coil spring electrode in which a portion protruding from the cylindrical portion spirally contacts the electrode of the conductor pattern;
An apparatus for detecting a broken glass in a window for an automobile.   The glass breakage detecting device for an automobile window according to claim 1, wherein the glass plate is configured so as not to be opened and closed.   The conductive terminal and the cylindrical coil spring electrode are supported in a case, the case is bonded to the glass plate, and the spring force by the cylindrical coil spring electrode is provided between the glass plate and the vehicle body. The glass breakage detection device for an automobile window according to claim 2, wherein the glass breakage detection device is sandwiched.

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