JP2008238976A - Inner mirror device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an inner mirror device effectively suppressing occurrence of any abnormality in the operation of an electronic circuit due to static electricity. <P>SOLUTION: In the inner mirror device 10, an electronic panel 36 is provided in a housing 12, a metallic plate 48 covers an electronic circuit 38 of the electronic panel 36, and a holding leg 50 of the metallic plate 48 is brought into contact with a gland 46 of the electronic panel 36. Arrival of the static electricity entering the housing 12 at the metallic plate 48 effectively suppresses the arrival of the static electricity to the electronic circuit 38, and occurrence of abnormality in the operation of the electronic circuit 38 by the static electricity is effectively suppressed. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an inner mirror device disposed in a vehicle interior.

  As an inner mirror device, there is a device in which a room mirror is held in a mirror holding portion of a mirror housing and an electronic circuit board is built in the mirror housing (for example, see Patent Document 1).

In this inner mirror device, a conductor is provided along the mirror holding portion in the mirror housing, and the conductor and the ground line of the electronic circuit board are connected via a connection line. As a result, the static electricity from the mirror housing flows to the ground line via the conductor and the connection line, thereby suppressing the occurrence of an abnormality in the operation of the electronic circuit of the electronic circuit board due to the static electricity.
JP 2005-297617 A

  In view of the above facts, an object of the present invention is to obtain an inner mirror device that can effectively suppress the occurrence of an abnormality in the operation of an electronic circuit due to static electricity.

  The inner mirror device according to claim 1 is disposed in a vehicle interior, and includes a housing provided with a mirror, an electronic board provided in the housing and provided with an electronic circuit, and has conductivity. And a covering member that covers the base.

  An inner mirror device according to a second aspect is the inner mirror device according to the first aspect, wherein the covering member is connected to the mirror.

  An inner mirror device according to a third aspect is the inner mirror device according to the first or second aspect, wherein the covering member fixes the electronic board to the housing.

  The inner mirror device according to claim 4 is the inner mirror device according to claim 3, wherein the electronic base is sandwiched between the housing and the covering member, and the electronic base is fixed to the housing. It is characterized by.

  In the inner mirror device according to the first aspect, the mirror is provided in the housing disposed in the vehicle interior, and the electronic circuit is provided in the electronic board provided in the housing.

  Here, the covering member having conductivity covers the electronic substrate. For this reason, it can suppress effectively that static electricity arrives at an electronic circuit because static electricity arrives at a covering member, and can control effectively that abnormality occurs in operation of an electronic circuit by static electricity.

  In the inner mirror device according to the second aspect, the covering member is connected to the mirror. For this reason, it can suppress effectively that static electricity arrives to an electronic circuit from a mirror, and can suppress more effectively that abnormality generate | occur | produces in the action | operation of an electronic circuit by static electricity.

  In the inner mirror device according to the third aspect, the covering member fixes the electronic board to the housing. For this reason, it is not necessary to separately provide a member for fixing the electronic substrate to the housing, and the configuration can be simplified.

  In the inner mirror device according to the fourth aspect, the electronic board is sandwiched between the housing and the covering member, and the electronic board is fixed to the housing. For this reason, the structure which fixes an electronic board | substrate to a housing can be simplified.

[First Embodiment]
FIG. 1 shows a cross-sectional view of the main part of the inner mirror device 10 according to the first embodiment of the present invention as viewed from above. FIG. 2 shows the inner mirror device 10 obliquely to the right of the vehicle. It is shown in the exploded perspective view seen from back. In the drawings, the front side of the vehicle is indicated by an arrow FR, and the upper side is indicated by an arrow UP.

  The inner mirror device 10 according to the present embodiment includes a housing 12 (housing), and the housing 12 is the center or ceiling (not shown) of the upper end of a windshield (not shown) in the passenger compartment 14. ) In the vehicle width direction center of the vehicle front side end. The housing 12 has a substantially rectangular parallelepiped container-like body 16 on the front side of the vehicle and a substantially rectangular annular rim 18 on the rear side of the vehicle.

  The vehicle rear side surface of the body 16 is formed as a substantially rectangular opening 20, and the opening 20 opens the inside of the body 16 toward the vehicle rear side. On the inner surface of the body 16, in the vicinity of the opening 20, a predetermined number (10 in the present embodiment) of columnar engaging protrusions 22 as engaging portions protrude and are formed. , Arranged along the periphery of the opening 20. Inside the body 16, a predetermined number (two in the present embodiment) of plate-like clamping plates 24 as clamping portions are formed in the right side portion of the vehicle, and the clamping plates 24 are located on the vehicle front side of the body 16. Projects from the inner surface to the rear side of the vehicle. A specific number (two in the present embodiment) of substantially cylindrical fixed cylinders 26 as fixed portions is formed on the inner surface of the body 16 in the vicinity of the sandwiching plate 24. It protrudes from the inner surface of the vehicle front side to the vehicle rear side.

  The rim 18 is formed with a predetermined number (10 in this embodiment) of U-shaped frame-shaped engagement frames 28 as engaged portions, and the predetermined number of engagement frames 28 is a predetermined number of the body 16. Corresponding to the number of engaging protrusions 22, they are arranged along the circumferential direction of the rim 18, and each protrudes toward the vehicle front side. A predetermined number of engaging protrusions 22 are inserted and engaged in the predetermined number of engaging frames 28, respectively, whereby the rim 18 and the body 16 are assembled and the housing 12 is assembled. It is configured.

  A substantially rectangular plate-shaped glass prism 30 as a mirror is provided inside the housing 12. The glass prism 30 is attached to the rim 18, and the mirror surface 32 on the front side (rear side of the vehicle) of the glass prism 30 passes through the inside of the rim 18 by arranging the rim 18 on the entire circumference of the glass prism 30. Open to the rear of the vehicle. A reflection film 34 as a conductive portion is provided on the back surface side portion (vehicle front side portion) of the glass prism 30. The reflection film 34 is made of metal and has conductivity, and the peripheral portion faces the vehicle front side. Exposed. Further, the thickness of the glass prism 30 is gradually reduced from the upper part toward the lower part.

  A plate-shaped electronic board 36 is provided inside the housing 12, and the electronic board 36 is disposed on the vehicle front side of the glass prism 30. An electronic circuit 38 is provided on the surface (rear side surface of the vehicle) of the electronic board 36. The electronic circuit 38 includes an integrated circuit 40, an electronic element 42 (transistor, resistor, capacitor, diode, etc.), a connector 44, and the like. Is provided. A predetermined number of connectors 44 (three in the present embodiment, the right side at the lower end of the electronic board 36, the upper side at the left side of the vehicle, and the lower side) are provided on the periphery of the electronic board 36. Is connected to a wire harness (not shown) as a connection line. In addition, a predetermined number of grounds 46 (two in the present embodiment, the right side at the upper end of the electronic base 36 and the lower side at the left end of the vehicle) are provided on the periphery of the electronic base 36. Connected to the ground of the vehicle.

  A plate-shaped metal plate 48 as a covering member is provided inside the housing 12, and the metal plate 48 is disposed between the glass prism 30 and the electronic substrate 36 and is produced by press molding or the like. It is made of metal and has conductivity. A predetermined number (five in the present embodiment) of sandwiching legs 50 having a substantially L-shaped cross section as a sandwiching means are integrally formed on the periphery of the metal plate 48. It protrudes toward the front of the vehicle. The tip side portions of a specific number of holding legs 50 (in this embodiment, the holding legs 50 at the upper end of the metal plate 48 and the right side of the vehicle and the holding legs 50 at the left side of the vehicle and the lower end of the metal plate 48) serve as fixing means. The metal plate 48 is fixed to the body 16 by the screws 52 and fixed to the specific number of fixed cylinders 26 of the body 16. An electronic board 36 is held between a number of holding plates 24, and the electronic board 36 is fixed to the body 16 by a metal plate 48. A specific number of the clamping legs 50 (the clamping legs 50 fixed to the fixed cylinder 26) are in contact with the ground 46 of the electronic board 36, whereby the metal plate 48 is connected to the ground of the vehicle.

  The metal plate 48 covers a portion of the electronic circuit 38 (particularly, the integrated circuit 40 and the electronic element 42) of the electronic board 36 on the vehicle rear side, and the metal plate 48 (excluding the tip side portion of the sandwiching leg 50). Are spaced apart from the electronic board 36 toward the rear of the vehicle and approach the glass prism 30 (reflection film 34). A predetermined number (two in the present embodiment, the lower end of the metal plate 48 and the right side of the vehicle and the left end of the vehicle of the metal plate 48) of the exposure holes 54 are formed through the periphery of the metal plate 48 so as to be exposed. The hole 54 exposes the connector 44 of the electronic board 36 to the vehicle rear side.

  Next, the operation of the present embodiment will be described.

  In the inner mirror device 10 having the above configuration, the metal plate 48 covers the rear side of the electronic circuit 38 of the electronic board 36, and the sandwiching legs 50 of the metal plate 48 are brought into contact with the ground 46 of the electronic board 36 to form the metal plate. 48 is connected to the ground of the vehicle. For this reason, the metal plate 48 has a function similar to that of the lightning rod. For example, when a vehicle occupant contacts the housing 12 or the glass prism 30, static electricity that has entered the housing 12 causes the housing 12 or the glass prism 30. It arrives at the metal plate 48 from (especially the reflective film 34). Thereby, it can suppress effectively that static electricity arrives at the electronic board | substrate 36 (electronic circuit 38) and a wire harness, and can suppress effectively that abnormality generate | occur | produces in the action | operation (control) of the electronic circuit 38 by static electricity.

  In addition, the electronic board 36 is fixed to the body 16 by the metal plate 48 by fixing the tip side portion of the holding leg 50 of the metal plate 48 to the fixed cylinder 26 of the body 16. For this reason, it is not necessary to separately provide a member for fixing the electronic board 36 to the body 16, and the configuration of the inner mirror device 10 can be simplified.

  Furthermore, the electronic board 36 is fixed to the body 16 by holding the electronic board 36 between the tip side portion of the holding leg 50 of the metal plate 48 and the holding plate 24 of the body 16. For this reason, the structure which fixes the electronic board | substrate 36 to the body 16 can be simplified.

[Second Embodiment]
FIG. 3 shows a cross-sectional view of the main part of an inner mirror device 60 according to the second embodiment of the present invention as seen from above.

  The inner mirror device 60 according to the present embodiment has substantially the same configuration as that of the first embodiment, but differs in the following points.

  In the inner mirror device 60 according to the present embodiment, a metal plate 48 is provided with a stretched plate 62 having an L-shaped cross section as a connecting portion, and the stretched plate 62 is formed on the metal plate 48 by so-called cutting and raising. ing. The extending plate 62 extends from the metal plate 48 to the rear side of the vehicle, and the tip of the extending plate 62 is brought into contact with the peripheral portion (exposed portion to the front side of the vehicle) of the reflective film 34 of the glass prism 30, thereby The plate 48 and the reflective film 34 are connected and conducted.

  Here, also in this embodiment, the same operations and effects as those in the first embodiment can be obtained.

  Further, the reflective film 34 of the glass prism 30 and the metal plate 48 are electrically connected via the stretched plate 62. For this reason, static electricity can be effectively prevented from coming from the reflective film 34 of the glass prism 30 to the electronic substrate 36 (electronic circuit 38) or the wire harness, and the occurrence of an abnormality in the operation of the electronic circuit 38 due to static electricity can be further increased. It can be effectively suppressed.

It is sectional drawing seen from the upper part which shows the principal part of the inner mirror apparatus which concerns on the 1st Embodiment of this invention. It is the disassembled perspective view which looked at the inner mirror apparatus which concerns on the 1st Embodiment of this invention from the vehicle right diagonal back. It is sectional drawing seen from the upper part which shows the principal part of the inner mirror apparatus which concerns on the 2nd Embodiment of this invention.

Explanation of symbols

10 Inner mirror device 12 Housing 30 Glass prism (mirror)
36 Electronic board 38 Electronic circuit 48 Metal plate (coating material)

Claims (4)

A housing disposed in the passenger compartment and provided with a mirror;
An electronic board provided in the housing and provided with an electronic circuit;
A covering member having electrical conductivity and covering the electronic substrate;
Inner mirror device with   The inner mirror device according to claim 1, wherein the covering member is connected to the mirror.   The inner mirror device according to claim 1, wherein the covering member fixes the electronic board to the housing.   The inner mirror device according to claim 3, wherein the electronic board is fixed to the housing by sandwiching the electronic board between the housing and the covering member.

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