JPH0318000Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to an electrode structure used in, for example, a consumer water electrolysis device, and particularly to a terminal structure thereof.

(Prior art) In conventional consumer water electrolyzers used for ionized water generation, sterilization, etc., Figs.
Electrode structures such as those shown in the figure have been used. This conventional electrode structure has a hole 2 in a part of the plate electrode 1.
The crimp terminal 4 at one end of the lead wire 3 is connected with the bolt 5 and nut 6 inserted into the hole 2, the periphery of the connection part is coated with insulating resin 7, and the electrode 1 is It is attached to an electrolytic device via a fixture 8, and the terminal 9 at the other end of the lead wire 3 is connected to a terminal of a power source. As a means for connecting the lead wire 3 to the electrode 1, an eyelet terminal may be used, or spot welding or the like may be used.

(Problem to be solved by the invention) However, in water electrolysis, the resistance of water as an electrolyte is extremely large, so the electrodes 1, 1
It is not possible to increase the distance between
According to the conventional connection using bolts 5 and nuts 6, the protruding width of the part protruding toward the other side becomes large, which creates a problem in that the spacing between the electrodes 1 and 1 is restricted and short circuits are likely to occur. Ta. Further, since it is necessary to attach the lead wire 3 with the bolt 5 and nut 6, there are problems in that the number of manufacturing steps increases and the manufacturing cost increases. In addition, in the case of spot welding, if the thickness of the electrode 1 is small,
There was a problem that welding was not possible.

(Means for Solving the Problems) In order to solve these problems, the electrode structure of the present invention has a mail tab part that can be inserted into a flat connecting terminal formed integrally with the electrode part by punching. It is characterized by having a plate-shaped electrode.

(Example) FIGS. 1 and 2 show an example of a plate-shaped electrode constituting an electrode structure according to the present invention.
As an example, the length is 13 cm and the width is 3.5 cm, and the mail tab 11 is formed integrally with the plate-shaped electrode 10 by punching from a 1 m square plate material, for example. The base material is a titanium plate with platinum or its oxide layer 14 deposited on both sides or one side as shown in the figure, and the thickness W1 of the base material and the standard of the mail tab 11 are met. Thickness W2
If they are different from each other, they are partially compressed by forging at the same time as punching so as to obtain the standard thickness W2. The mail tab 11 of this example is formed at a position offset to one side in the width direction on the upper side of the plate-shaped electrode 10, and a stepped portion 1 whose lower side is wider.
It has 2. Further, notches 13 are formed on the left and right sides of the upper part of the plate electrode 10.

FIGS. 3 and 4 show an electrode structure having the plate-shaped electrodes 10 of the above example, and this electrode structure includes two plate-shaped electrodes 10, and the upper ends of these plate-shaped electrodes 10 are , the plate-shaped electrode 1 is held by an electrode holder 15 made of an insulating resin molded material that is held and molded so that the mail tab 11 portion protrudes upward.
0 and 10 are parallel to each other, and the mail tabs 11 and 11 of each plate electrode 10 and 10 are held so that they do not face each other.

The electrode holder 15 has a mounting piece 24 on the side.
A hole 23 is provided in the mounting piece 24, a fixing device 22 such as a mounting screw or bolt is inserted into the hole 23, and the fixing device 22 is attached to a screw such as an electrode mounting bracket 21 provided in the electrolysis device. A mounting structure such as screwing into the hole 21a is adopted. Further, on the upper surface of the electrode holder 15, adjacent plate electrodes 10, 10 are provided.
A protrusion 25 is formed to be located between the mail tabs 11 and 11, and the protrusion 25 prevents liquid (water) from collecting on the upper surface of the electrode holder 10 for some reason.
This prevents a short circuit between the mail tabs 11, 11. Since the resin constituting the electrode holder 15 is also integrally molded within the notch 13 of the plate electrode 10, the plate electrode 10 is firmly held without slipping out of the electrode holder 15.

In FIG. 3, 16 is a flat connection terminal;
The flat connecting terminal 16 is fitted into the mail tab 11 and has an elastic metal female connector 17, and the female connector 17 is surrounded by molded resin 18. One end of a lead wire 19 connected to the power supply terminal of the electrolyzer is connected to the terminal 17 . Reference numeral 20 indicates cut grooves formed on both sides of the molded resin 18, into which a portion of the mail tab 11 below the stepped portion 12 is fitted.

As shown in FIG.
7, and a slit 28 through which the plate electrode 10 is inserted.
The electrode holder 25 is placed between the lower mold 29 having a
It can be manufactured by an injection molding method in which a cavity 30 corresponding to the above is formed and resin is injected into the cavity 30. Molding of the electrode holder 15 by such injection molding is possible because the mail tab 11 is formed by punching integrally with the plate electrode 10, and the mold can be punched out in the longitudinal direction of the plate electrode 10. , it becomes possible.

Furthermore, if the mail tabs 11 do not face each other as in this embodiment, the plate electrodes 10 can be set closer to each other than when they face each other.

6 to 8 show other embodiments of the present invention, in which a hole 31 is provided on the lower end side of the plate-shaped electrode 10, that is, on the opposite side of the part held by the electrode holder 15, and two plate-shaped electrodes are provided. A cylindrical spacer 32 made of insulating resin or the like is interposed between the electrodes 10, 10 in a portion corresponding to the hole 31, and a resin pin 33 is inserted into the spacer 32 and the hole 31 to heat and press both ends. Therefore, it is fixed. Furthermore, by providing a hole 34 in the mail tab 11, it is possible to connect, for example, a lead wire, thereby making it possible to respond to emergencies. According to this embodiment, the plate electrodes 10, 10 can be maintained at equal intervals over the entire length of the plate electrode 10, and the electrodes 10, 10
Shortening of the lifespan due to partial consumption of the electrodes 10 due to uneven spacing can be prevented.

In the above embodiment, an example was shown in which two plate-shaped electrodes 10 were held by the electrode holder 15, but it is also possible to use a single plate-shaped electrode 10, and three or more plate-shaped electrodes 10 may be used. It is also possible to hold the plate electrodes 10 in parallel. Furthermore, the present invention can be used for electrolysis of materials other than water.

(Effects of the invention) As described above, the present invention is equipped with a plate-shaped electrode in which the mail tab part that can be inserted into the flat connection terminal is integrally formed with the electrode part by punching, which is different from the conventional one. Compared to the case where the lead wires are connected using bolts and nuts, the mail tab does not protrude toward the other side, so there are fewer restrictions on the spacing between the electrodes on the mail tab, and even if the spacing between the electrodes is reduced. It is possible to realize an electrode structure that is free from the risk of short circuits and is suitable for electrolysis devices that handle liquids with high resistance, such as water electrolysis. Furthermore, since the mail tab is formed by punching, there is no need to connect lead wires with bolts or nuts, so the number of manufacturing steps can be reduced and the manufacturing cost can be reduced.
Further, according to the present invention, when replacing an old electrode with a new one, the electrode can be easily replaced by attaching and detaching the flat connecting terminal to the mail tab. Further, the present invention can be applied even when the electrode is thin.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing an example of a plate-shaped electrode constituting an electrode structure according to the present invention, Fig. 2 is a side view showing its upper part, and Fig. 3 is a plan view of the present invention using the plate-shaped electrode of Fig. 1. FIG. 4 is a vertical sectional view showing the upper structure of the electrode structure shown in FIG. 3, and FIG. 5 shows a mold for forming an electrode holder in this example. 6 is a perspective view showing another example of the plate electrode according to the present invention, FIG. 7 is a sectional view showing the spacer structure at the bottom thereof, and FIG.
FIG. 9 is a front view showing a conventional plate electrode; FIG. 10 is a connecting portion of the conventional electrode structure. FIG. 2 is a partially cross-sectional side view showing the structure of FIG.

Claims (1)

[Claims for Utility Model Registration] 1. An electrode structure for electrolysis characterized by having a plate-like electrode formed by punching out a mail tab portion that can be inserted into a flat connecting terminal and integrally forming the electrode portion. 2 A plurality of the plate-shaped electrodes are provided, and an electrode holder made of an insulating resin molded material molded to hold a portion of the plate-shaped electrodes allows the plate-shaped electrodes to be held parallel to each other. An electrode structure for electrolysis according to claim 1, characterized in that the electrode structure is held in such a manner that 3. A request for registration of a utility model characterized in that the electrode holder is provided with plate-shaped electrodes in which the mail tabs are formed at biased positions so that the mail tabs of the respective plate-shaped electrodes are in positions not facing each other. The electrode structure for electrolysis according to item 2. 4. A utility model registration request characterized in that a protrusion is provided on the top surface of the electrode holder so as to be located between the mail tabs of adjacent plate-shaped electrodes, for separating the liquid that collects on the top surface of the electrode holder. The electrode structure for electrolysis according to scope 3. 5. The electrode structure for electrolysis according to any one of claims 1 to 4, wherein the plate-shaped electrode is made of titanium.