JP3070440B2 - Waterproof electrode - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a waterproof electrode.

[0002]

2. Description of the Related Art Conventionally, the following types of waterproof electrodes have been known. A pair of male and female electrodes is held in a bottomed cylinder, and the openings of both cylinders face each other, and one of the cylinders is brought into close proximity so as to be inserted into the other cylinder, and the pair of electrodes are fitted and connected. . Here, since a ring-shaped seal is interposed on the opposing surfaces of the two cylinders, a pair of bottomed cylinders are inserted with the respective openings facing each other, whereby the cylinders are sealed and the interior is sealed. An air-tight space is formed to waterproof the internal electrodes.

[0003]

In the above-mentioned conventional waterproof electrode, since a cylindrical body is used which accommodates the electrodes which are fitted and connected to each other, a double cylindrical body including the female electrode is used. There was a problem that they would overlap and become bulky. The present invention has been made in view of the above problems, and has as its object to provide a waterproof electrode that can be made smaller.

[0004]

In order to achieve the above-mentioned object, the invention according to claim 1 is directed to a male-side power supply housed in a cylindrical body.
Electrode and a cylindrical female that can be fitted and connected by inserting this male electrode
And a sealing material at an opening of the cylindrical body.
Is held, and the male electrode and the female electrode are fitted and connected.
The outer surface of the cylinder and the female electrode,
And a watertight space is formed between them.

[0005]

In the present invention constructed as described above, the female electrode is formed in a cylindrical shape with a bottom, and the male electrode is formed so as to be inserted into the female electrode. When the male electrode is inserted into the female electrode, the conductive portion on the outer peripheral surface of the male electrode comes into contact with the conductive portion on the inner peripheral surface of the female electrode so as to conduct, and the seal provided on the outer side than this A member seals between the male and female electrodes. Accordingly, the two conductive portions are brought into contact with each other at the inner portion sealed by the seal member to conduct.

[0006]

As described above, according to the present invention, the conductive portion of the electrode is housed in a gas-tight manner without forming a sealed space between the cylinders separate from the electrode. It is possible to provide a waterproof electrode that can be formed into a waterproof electrode.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view showing a breaker switch to which a waterproof electrode according to one embodiment of the present invention is applied, and FIG. 2 is a sectional view. In the present embodiment, a pair of male electrodes 20 and 20 are held in a box-shaped lower case 10, and the male electrodes 20 and 20 are inserted into a lid-shaped upper case 30 capable of covering the lower case 10 from above. The female female electrodes 40, 40 which can be fitted and connected to each other are held.

In the figure, a cylindrical male electrode 20 is
A male having an upper conductive portion 21 having a hemispherical tip, a flange 22 at a substantially central position in the length direction, and a male screw formed on the outer peripheral surface below the flange 22. The screw portion 23 is provided. Lower case 10
On the upper surface of the through hole, two through holes 11, 11 into which the pair of male electrodes 20, 20 can be inserted from above, are formed, and the male projecting upward from the periphery of the through holes 11, 11. It has cylindrical bodies 12, 12 that can accommodate the side electrodes 20. On the inner peripheral surface of the upper end of the cylindrical body 12, a stepped portion 12a having an opening diameter slightly larger than that is formed. A ring-shaped sealing member 13 is mounted on the stepped portion 12a. On the other hand, a cap 14 having a sectional shape that covers the outer peripheral surface, the upper end, and the inner peripheral surface is attached. Same cap 14
Abuts against the upper end of the seal member 13 on the inner peripheral surface side of the cylindrical body 12 to prevent the seal member 13 from coming off. As will be described later, when the cylindrical female electrode 40 is inserted through the opening of the cylindrical body 12, the conductive portion 21 of the male electrode 20 is connected to the female electrode 4.
, The outer peripheral surface of the female electrode 40 and the cylindrical body 1
The seal member 13 is sandwiched between the inner peripheral surface of the second seal member and the inner peripheral surface of the second seal member.

In this embodiment, the cylindrical body 12 is formed so as to accommodate the conductive portion 21 of the male electrode 20, and the cylindrical body 12
The seal member 13 is held at the opening of the first electrode and a water-tight space is formed between the cylindrical body 12 accommodating the male electrode 20 and the outer peripheral surface of the female electrode 40.

On the bottom surface of the lower case 10, cylindrical portions 15, 15 for bolting are provided facing the male screw portion 23 of the male electrode 20.
Are formed from the upper surface of the through hole 11 to the male side electrode 20.
After passing through the male screw portion 23, the collar 24 and the nut 25 are attached through the cylindrical portion 15, and the rubber stopper 16,
Sealed at 16. Also, on the side surface of the lower case 10, there are formed tubular portions 17, 17 for drawing out the electric wire so as to face the male screw portion 23, and the electric wire 50 having a plate-shaped crimp terminal 51 at the end is connected to the tubular portion 17. The crimp terminal 51 is interposed between the collar 24 and the nut 25 to be bolted and fixed. In addition, the cylindrical portion 1
As in the case of 5 and 15, the rubber plug 1 is also sealed in the cylindrical portions 17 and 17 so as to seal the space between the electric wire 50 to be inserted and the cylindrical portion 17.
8, 18 are provided.

On the other hand, the upper case 30 is formed in a deep lid shape having an opening on the lower surface, and holds a pair of female electrodes 40 on the ceiling surface. The female electrode 40 is formed in a cylindrical shape that opens downward, and has a male screw portion 41 protruding upward on the upper surface, and a screw formed on the ceiling surface of the upper case 30 with the male screw portion 41. It is screwed into the hole 31 and held. At this time, a fuse 60 having electrodes 61, 61 through which the male screw portions 41, 41 can be inserted at both ends is aligned with the ceiling surface, and when attaching the pair of female electrodes 40, 40, the male screw is used. The part 41 is screwed into the screw hole 31 of the upper case 30 by inserting the electrode 61 of the fuse 60. As a result, the pair of female electrodes 40, 40 are conducted through the fuse 60.

In this embodiment, when replacing the fuse 60, the female electrode 40 is removed. A wrench or the like is used for removal, but the wrench may damage the outer peripheral surface of the female electrode 40. However, when the outer peripheral surface of the female electrode 40 is the male electrode 20, the outer peripheral surface is the conductive portion 21. Therefore, if the outer peripheral surface is damaged, there is a possibility that the contact resistance increases, but as in the present embodiment. By arranging the female electrode 40 on the side that is easily damaged, such an effect can be prevented. Also,
The inner diameter of the cylindrical female electrode 40 is larger than that of the male electrode 20 and does not come into contact with the male electrode 20 as it is, but a louver 42 serving as a conductive portion is provided on the inner peripheral surface of the female electrode 40. Since the male electrode 20 is inserted while compressing the louver 42, reliable conduction can be obtained while reducing the resistance. A handle 32 for operation is formed on the upper surface of the upper case 30,
On the outer side surface, a flexible lock arm 33 that can engage with the wedge-shaped projection 19 formed on the side surface of the lower case 10 is formed.

Next, the operation of this embodiment having the above configuration will be described. In the lower case 10, the male electrode 20 is inserted from the side of the male screw portion 23 into the cylindrical body 12 projecting from the upper surface of the lower case 10, and penetrates the through hole 11. A crimp terminal 51 is crimped to the end of the electric wire 50 through which the ring-shaped rubber stopper 18 is inserted, and the crimp terminal 51 is inserted into the cylindrical portion 17 on the side surface of the lower case 10 from the crimp terminal 51 side. Lower case 1
The collar 24 is inserted through the cylindrical portion 15 on the back surface of No. 0 and inserted into the male screw portion 23, the crimp terminal 51 is inserted, and the nut 25 is screwed and tightened. Then
The male electrode 20 is fixed to the lower case 10 by sandwiching the periphery of the through hole 11 between the flange portion 22 and the collar 24, and the electric wire 50 having the crimp terminal 51 fixed to the tip is also connected.

On the other hand, in the upper case 30, the electrodes 61, 61 of the fuse 60 are screwed into the screw holes 31, 31 on the ceiling surface.
The male screw 41 of the female electrode 40 is inserted into the screw holes 31 and screwed together. Thus, the female electrodes 40, 40 are fixed to the upper case 30 and are conducted through the fuse 60. After this,
When the upper case 30 is put on the upper surface of the lower case 10, the female electrode 40 is inserted into the cylindrical body 12 protruding from the upper surface of the lower case 10. Female electrode 40 is cylindrical 1
2, the conductive portion 21 at the tip of the male electrode 20 is inserted into the female electrode 40,
The female electrode 40 is inserted into the seal member 13 held on the step 12a on the opening side of the cylindrical body 12. at first,
The male electrode 20 is inserted without contacting the female electrode 40, but when penetrating the louver 42 held on the inner peripheral surface, the male electrode 20 is electrically connected to the female electrode 40 via the louver 42. I do. Since the contact is made via the louver 42, the insertion resistance is small. On the other hand, when the female electrode 40 penetrates through the seal member 13, the female electrode 40
The seal member 13 is compressed and held between the inner peripheral surface and the inner peripheral surface of the cylindrical member 12 to form a watertight space inside the cylindrical body 12. Thus, the conductive portion 21 of the male electrode 20 and the louver 42 as the conductive portion of the female electrode 40 are held in a watertight space.
When the upper case 30 is further pushed in, the lock arm 33 formed on the outer surface is locked and fixed to the wedge-shaped projection 19 formed on the outer surface of the lower case 10.

As described above, the cylindrical body 12 is formed so as to accommodate the conductive portion 21 of the male electrode 20, and the cylindrical body 1
By holding the seal member 13 in the opening portion of No. 2,
A watertight space is formed between the cylindrical body 12 accommodating the male side electrode 20 and the outer peripheral surface of the female side electrode 40, and is provided outside the conductive part 21 of the male side electrode 20 and the conductive part of the female side electrode 40. It can be sealed to make a smaller waterproof electrode. By the way, since rubber plugs are all disposed in the lower case 10 at communication portions with the outside, when the female electrode 40 starts to be inserted into the cylindrical body 12, the inside becomes an airtight space. Therefore, the upper case 3
Even if 0 is pushed in, the internal pressure increases and it is pushed back. FIGS. 3 and 4 show a modification for preventing such pushing back . In FIG. 3 , the outer periphery of the female electrode 40 is made narrower only at the distal end, and the outer periphery of the female electrode 40 becomes conductive when the male electrode 20 is inserted. After being removed, the outer peripheral surface of the female electrode 40 comes into contact with the inner peripheral surface of the seal member 13. In FIG. 4 , a slit is formed in the peripheral wall of the female electrode 40 from the opening side, and air flows in and out through the slit until the male electrode 20 is electrically connected when the male electrode 20 is inserted. Since the member 13 passes over the slit, the air is prohibited from entering and exiting, and the watertightness is achieved.

[Brief description of the drawings]

FIG. 1 is a perspective view of a breaker switch to which a waterproof electrode according to one embodiment of the present invention is applied.

FIG. 2 is a sectional view of the breaker switch.

FIG. 3 is a cross-sectional view showing a modified example of a waterproof electrode for preventing pushback due to internal pressure.

FIG. 4 is a cross-sectional view showing a modified example of a waterproof electrode for preventing push-back due to internal pressure.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... Lower case 12 ... Cylindrical body 13 ... Seal member 20 ... Male side electrode 21 ... Conductive part 30 ... Upper case 40 ... Female side electrode 42 ... Louver

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) H01H 9/04 H01R 13/52 H01H 33/53

Claims (1)

(57) [Claims] A male electrode housed in a cylindrical body;
And a cylindrical female electrode that can be fitted and connected by inserting the side electrode.
In addition, a sealing material is held at the opening of the cylindrical body,
When the male electrode and the female electrode are fitted and connected,
Watertight between the cylindrical body and the outer peripheral surface of the female electrode itself.
Waterproof electrode characterized by forming a typical space .