JPH0526576Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a clip electrode of an electrochromic element used in an automobile anti-glare mirror.

[Prior Art] Recently, electrochromic elements have been used in anti-glare mirrors for automobiles. Electrochromic devices are roughly divided into fully fixed type and gel type. For example, fully fixed devices have an ITO layer 5 connected to an upper electrode on the back side of mirror glass 1, and a first coloring layer, as shown in FIG. 6. It is formed by laminating a solid electrolyte layer 7, a second coloring layer 8, an ITO layer or Al layer 9 connected to the lower electrode, a sealing resin layer 10, and a substrate glass 11. In addition, in FIG. 2, only the thickness direction of each layer except for the above-mentioned glass is exaggerated.

In order to supply an external voltage to the electrodes of the ITO layer 5 and the Al layer 9 as described above to drive the element, an extraction electrode section is provided and external wiring is connected by soldering. Soldering is not easy to work with, and because the external wiring with low resistance and the lead-out part with high resistance are in contact at one point, the supply speed of charge from the external wiring through the lead-out part to the entire electrode becomes slow. Responsiveness is also poor, and
Uneven discoloration occurs. Therefore, attempts have been made to attach a clip electrode formed by press-molding a plate material made of a conductive material into a cross-sectional shape to the extraction electrode portion on the mirror side. An anti-glare mirror for an automobile has clip electrodes 12, 12, which are formed by press-molding a plate of a conductive material such as phosphor bronze or spring steel into a linear shape with a letter-shaped cross section, in close contact with each other.

[Problems to be Solved by the Invention] As described above, the conventional clip electrode is linear in the longitudinal direction of the electrode, so if the extraction electrode portion of the element is linear, it can be correctly attached. However, in the case of an anti-glare mirror in which an electrochromic element is incorporated into a mirror whose upper and lower end surfaces are slightly curved when viewed from the front, the lead-out electrode portion is curved along the mirror end surface, so this curvature In addition, it is difficult to bend the clip electrode, and therefore the clip electrode does not fit into the lead-out electrode portion, resulting in the problem that the electrochromic device cannot be driven accurately.

The object of the present invention is to provide a clip electrode that can be fitted onto an electrochromic element side electrode.

[Means for Solving the Problems] In order to achieve the above object, the present invention provides a cross-sectional clip electrode to be attached to the lead-out electrode part of an electrochromic element mirror, in which a clip electrode is provided on both sides of the cross-sectional shape in the longitudinal direction of the electrode. A large number of slits are provided at right angles to the slit.

[Function] Since the clip electrode of the present invention has a large number of slits formed on both sides, it can be easily bent in the longitudinal direction. Even if the upper and lower end surfaces of the mirror are curved when viewed from the front and the extraction electrode portion is non-linear, the clip electrode can be fitted.

[Example] Next, the present invention will be specifically explained with reference to the drawings.

FIG. 1 is a perspective view showing the arrangement relationship between the clip electrode and the electrochromic element mirror of the present invention;
FIG. 2 is an enlarged sectional view after the clip electrode is attached.

Mirror 1 has a curved upper and lower surface with a small curvature (radius
R ₁ , R ₂ ). On the other hand, the clip electrode 2 is
A large number of slits 4 are provided on both sides 3 of the cross-sectional shape at right angles to the longitudinal direction of the electrode.

As mentioned above, the upper and lower surfaces of the mirror 1 are curved, but by bending and caulking the side edges 4 while slightly curving the clip electrode 2 with a slit along the curve, the lead-out electrode on the end surface of the mirror can be made. fit the department.

In addition, if a voltage is applied by sandwiching a clip electrode divided into two poles around the entire circumference of the EC mirror,
Although it is possible to improve the coloring response, the coloring flow from the periphery to the center of the mirror may give the impression that a sudden drop in reflectance has occurred, which may impair safe driving. On the other hand, if a coloring voltage is applied with the upper electrode of the upper and lower clip electrodes 2, 2 divided into two on the positive side and the lower electrode on the negative side, or grounded, as shown in the figure, the coloring flow of the EC mirror will change. Since the color moves naturally from top to bottom, there is no discomfort when coloring, and it does not interfere with safe driving.

[Effect of the invention] As mentioned above, since the clip electrode is provided with a slit, when the end face of the mirror is straight, it can be attached to the upper and lower lead-out electrode parts as is and can be fitted by bending both sides 4. can.
In addition, even if the end face of the mirror is curved, the clip electrode can be bent in the longitudinal direction, and by bending both sides formed through the slit, it can be brought into close contact with the lead-out electrode part of the mirror, which improves responsiveness. It is possible to provide an electrochromic anti-glare mirror that can be well and uniformly colored and erased.

[Brief explanation of drawings]

Fig. 1 is a perspective view showing the relationship between the clip electrode of the present invention and the electrochromic element mirror;
The figure is an enlarged sectional view of the device with clip electrodes attached. 1...Mirror, 2...Clip electrode, 3...Both sides, 4...Slit.

Claims (1)

[Scope of utility model registration request] A clip electrode is an electrode having a square cross section and is attached to the upper and lower lead-out electrode portions of an electrochromic element mirror, and is characterized in that a large number of slits are provided on both sides of the cross section at right angles to the longitudinal direction of the electrode.