JPH08293347A - Waterproof electrode - Google Patents

Abstract

PURPOSE: To provide a more small-sized waterproof electrode. CONSTITUTION: A cylindrical body 12 is formed so as to house the conductive part 21 of a male electrode 20, and a seal member 13 is held on the opening part of the cylindrical body 12. Thus, a watertight space is formed by the cylindrical body 12 for housing the male electrode 20 and the outer circumferential surface of a female electrode 40 to seal them on the outer side from the conductive part 21 of the male electrode 20 and the conductive part of the female electrode 40, and a more small-sized waterproof electrode is provided.

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 are respectively held in a bottomed cylinder, the openings of both cylinders are faced to 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 is fitted and connected. . Here, since ring-shaped seals are interposed between the opposing surfaces of both cylinders, by inserting a pair of bottomed cylinders with their openings facing each other, the cylinders are sealed and the inside An airtight space is formed on the inside to waterproof the electrodes inside.

[0003]

In the above-mentioned conventional waterproof electrode, since the tubular body is used to accommodate the electrodes to be fitted and connected to each other, the double tubular 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 an object thereof is to provide a waterproof electrode that can be made smaller.

[0004]

In order to achieve the above object, the invention according to claim 1 provides a female electrode having a bottomed tubular shape and a conductive portion on the inner peripheral surface thereof, and a female electrode. A male electrode having a conductive portion that can be inserted and has a conductive portion that is connected to the conductive portion and can conduct electricity when inserted, and the conductive material with the male electrode inserted into the female electrode and the conductive portions being in contact with each other. And a sealing member for sealing between the male electrode and the female electrode on the outer side of the portion.

The invention according to claim 2 is the waterproof electrode according to claim 1, wherein the male electrode is a cylindrical body into which the female electrode can be inserted when the male electrode is inserted into the female electrode. The seal member is covered and seals between the inner peripheral surface of the cylindrical body and the outer peripheral surface of the female electrode. Further, in the invention according to claim 3, the male electrode is inserted into the female electrode having a cylindrical shape with a bottom, and the inner peripheral surface of the female electrode and the male electrode are brought into contact with each other so as to be electrically connected to each other and outside the contact portion. It is designed to be sealed with.

[0006]

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 that it can be inserted into this female electrode. When the male side electrode is inserted into the female side electrode, the conductive part on the outer peripheral surface of the male side electrode comes into contact with the conductive part on the inner peripheral surface of the female side electrode to conduct electricity, and a seal provided on the outside of this A member seals between the male and female electrodes. Therefore, the two conductive parts are in contact with each other at the inner portion sealed by the seal member to be electrically connected.

In the invention according to claim 2 configured as described above, the male electrode is covered with the cylindrical body,
The cylindrical body is formed so that the female electrode can be inserted therein. When inserting the male side electrode into the female side electrode, the female side electrode is inserted into this cylindrical body, and the sealing member seals between the inner peripheral surface of the cylindrical body and the outer peripheral surface of the female side electrode. Further, in the invention according to claim 3 configured as described above, the male electrode is inserted into the female electrode having a cylindrical shape with a bottom, and the inner peripheral surface of the female electrode is brought into contact with the male electrode to conduct electricity. And seal outside the contact area.

[0008]

As described above, according to the present invention, the conductive portion of the electrode is hermetically housed without forming a sealed space between the cylindrical bodies which are separate from the electrode. It is possible to provide a waterproof electrode that can be made into a material.

Further, according to the second aspect of the invention, by providing the cylindrical body only on the male side electrode, the size can be reduced as compared with fitting the cylindrical bodies together. In particular, since the male electrode often needs a housing portion for protecting it, it can be waterproofed by using this housing portion. Further, also in the invention according to claim 3, the contact portion of the electrode is hermetically accommodated without forming a sealed space between the cylindrical bodies separate from the electrode, thereby further miniaturizing. It is possible to provide a waterproof electrode capable of

[0010]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view of a breaker switch to which a waterproof electrode according to an embodiment of the present invention is applied, and FIG. 2 is a sectional view thereof. In this embodiment, a pair of male-side electrodes 20, 20 are held in a box-shaped lower case 10, and the male-side electrodes 20, 20 are inserted into a lid-shaped upper case 30 that can cover the lower case 10 from the upper surface. The cylindrical female electrodes 40, 40 that can be fitted and connected are retained.

In the figure, the cylindrical male side electrode 20 is
In addition to having an upper conductive portion 21 having a semi-spherical tip, a flange portion 22 is provided at a substantially central position in the longitudinal direction, and a male screw is formed on the outer peripheral surface below the flange portion 22. The screw portion 23 is provided. Lower case 10
Is formed with two through holes 11, 11 into which the pair of male electrodes 20, 20 can be inserted from above, and the male holes projecting upward from the peripheral edges of the through holes 11, 11. It is provided with cylindrical bodies 12, 12 capable of accommodating the side electrode 20. A step portion 12a having an opening diameter slightly larger is formed on the inner peripheral surface of the upper end of the cylindrical body 12, and a ring-shaped seal member 13 is attached to the step portion 12a. On the other hand, a cap 14 having a cross-sectional shape that encloses the outer peripheral surface, the upper end, and the inner peripheral surface is attached. Same cap 14
Is in contact with 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 tubular female electrode 40 is inserted through the opening of the tubular body 12, the conductive portion 21 of the male electrode 20 becomes the female electrode 4 of the same.
0, and 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 13 and the inner peripheral surface of the second seal member 13.

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 is formed.
The seal member 13 is held in the opening of the above, and a watertight space is formed between the cylindrical body 12 that houses the male electrode 20 and the outer peripheral surface of the female electrode 40. However, it suffices that the male electrode 20 is sealed outside the conductive portion 21 of the male electrode 20, and thus the male electrode 20 does not necessarily have to be covered with the cylindrical body 12. For example, as shown in FIG. 3, even if the same sealing member 13 is sandwiched between the inner peripheral surface of the female electrode 40 on the opening end side and the outer peripheral surface of the male electrode 20, the male electrode is held in the female electrode 40. The side electrode 20 is inserted and the outer side of the conductive portion 21 is sealed. Alternatively, as shown in FIG. 4, the seal member 13 may be attached to the flange portion 22 so that the seal member 13 is sandwiched between the female electrode 40 and the opening end portion of the female electrode 40. Of course, the seal member 13 may be held on either side of the male electrode 20 and the female electrode 40.

On the bottom surface of the lower case 10, facing the male screw portion 23 of the male electrode 20, there are cylindrical portions 15, 15 for bolting.
And the male electrode 20 is formed from the upper surface side of the through hole 11.
After inserting the male screw portion 23 of the, the collar 24 and the nut 25 are attached through the tubular portion 15, and the rubber plug 16,
It is sealed at 16. Further, on the side surface of the lower case 10, there are also formed cylindrical portions 17 and 17 for drawing out the electric wire so as to face the male screw portion 23, and the electric wire 50 having a plate-like crimp terminal 51 at the tip thereof is connected to the cylindrical portion 17. Then, the crimp terminal 51 is interposed between the collar 24 and the nut 25 so as to be fixed by bolting. In addition, the tubular portion 1
Similarly to 5, 15, the rubber plug 1 is provided so as to seal between the electric wire 50 and the tubular portion 17, which are also inserted in the tubular portions 17, 17.
8 and 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, 40 on the ceiling surface. The female electrode 40 is formed in a cylindrical shape that opens downward, and is provided with a male screw portion 41 protruding upward on the upper surface. The male screw portion 41 forms a screw formed on the ceiling surface of the upper case 30. It is held by being screwed into the fitting hole 31. At this time, the fuse 60 having the electrodes 61, 61 into which the male screw portions 41, 41 can be inserted at both ends is aligned with the same ceiling surface, and the male screw is used for attaching the pair of female electrodes 40, 40. The portion 61 is inserted through the electrode 61 of the fuse 60 and screwed into the screw hole 31 of the upper case 30. As a result, the pair of female electrodes 40, 40 are electrically connected via the fuse 60.

In this embodiment, the female electrode 40 is removed when the fuse 60 is replaced. A wrench or the like is used for removal, but the outer peripheral surface of the female electrode 40 may be damaged by the wrench. However, since the outer peripheral surface of the female side electrode 40 is the male side electrode 20 and the outer peripheral surface is the conductive portion 21, the contact resistance may increase if the outer peripheral surface is damaged. 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-side electrode 40 is larger than that of the male-side electrode 20, and it does not contact the male-side electrode 20 as it is, but a louver 42 that serves as a conductive portion is provided on the inner peripheral surface of the female-side electrode 40. Since the male side electrode 20 is inserted while the louver 42 is held while being compressed, it is possible to obtain a reliable conduction while reducing the resistance force. A handle 32 for operation is formed on the upper surface of the upper case 30, and
A flexible lock arm 33 is formed on the outer side surface of the lower case 10 so as to engage with the wedge-shaped projection 19 formed on the side surface of the lower case 10.

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 male screw portion 23 side into the cylindrical body 12 protruding to the upper surface of the lower case 10, and the through hole 11 is penetrated. A crimp terminal 51 is crimped to the tip of the electric wire 50 in which the ring-shaped rubber plug 18 is inserted, and the crimp terminal 51 is inserted into the tubular portion 17 on the side surface of the lower case 10 from the side of the crimp terminal 51. Lower case 1
The collar 24 is inserted through the tubular portion 15 on the back surface of 0 to be 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 peripheral edge 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 at 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.
Then, the male screw portion 41 of the female electrode 40 is inserted into both screwing holes 31, 31 and screwed. As a result, the female electrodes 40, 40 are fixed to the upper case 30 and electrically connected via the fuse 60. After this,
When the upper case 30 is covered on the upper surface of the lower case 10, the female electrode 40 is inserted into the cylindrical body 12 projecting on the upper surface of the lower case 10. Female side electrode 40 is cylindrical body 1
2, the conductive portion 21 at the tip of the male electrode 20 is inserted into the female electrode 40, and
The female electrode 40 is inserted into the seal member 13 held by the step portion 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 passing through 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. To 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 the seal member 13, the female electrode 40 and the cylindrical body 12
The seal member 13 is compressed and held between itself and the inner peripheral surface thereof to form a watertight space inside the cylindrical body 12. As a result, the conductive portion 21 of the male electrode 20 and the louver 42 that is 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.

In this way, the cylindrical body 12 is formed so as to accommodate the conductive portion 21 of the male electrode 20, and the cylindrical body 1 is also formed.
By holding the seal member 13 in the opening portion of 2,
A watertight space is formed between the cylindrical body 12 accommodating the male electrode 20 and the outer peripheral surface of the female electrode 40, and is located outside the conductive portion 21 of the male electrode 20 and the conductive portion of the female electrode 40. It can be sealed to form a smaller waterproof electrode. By the way, since rubber plugs are arranged in the lower case 10 at the communicating portions with the outside, the inside becomes an airtight space when the female electrode 40 is started to be inserted into the cylindrical body 12. Therefore, the upper case 3
Even if 0 is pushed in, the internal pressure increases and it is pushed back. 5 and 6 show a modified example for preventing such push-back, and in FIG. 5, the outer circumference of the female electrode 40 is thinned only at the tip end side, and when the male electrode 20 is inserted, conduction is maintained. The outer peripheral surface of the female electrode 40 contacts the inner peripheral surface of the seal member 13 after the removal. Further, in FIG. 6, a slit is formed on the peripheral wall surface of the female electrode 40 from the opening side, and air flows in and out through the slit until the electrical connection is established when the male electrode 20 is inserted. Since the member 13 crosses the slit, it is watertight by prohibiting the entry and exit of air.

[Brief description of drawings]

FIG. 1 is a perspective view of a breaker switch to which a waterproof electrode according to an 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 the waterproof electrode.

FIG. 4 is a cross-sectional view showing a modified example of the waterproof electrode.

FIG. 5 is a cross-sectional view showing a modified example of a waterproof electrode for preventing pushback due to internal pressure.

FIG. 6 is a cross-sectional view showing a modified example of a waterproof electrode for preventing pushback due to internal pressure.

[Explanation of symbols]

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

Claims (3)

[Claims] 1. A female electrode having a bottomed cylindrical shape and having a conductive portion on its inner peripheral surface, and a female electrode which can be inserted into the female electrode and which is electrically connected to said conductive portion when inserted into the outer peripheral surface. A male electrode having a portion, and a seal that seals between the male electrode and the female electrode on the outer side of the conductive portion in a state where the male electrode is inserted into the female electrode and both conductive portions are in contact with each other. A waterproof electrode comprising: a member. 2. The waterproof electrode according to claim 1, wherein the male-side electrode is covered with a cylindrical body into which the female-side electrode can be inserted when the male-side electrode is inserted into the female-side electrode. A waterproof electrode, which seals between an inner peripheral surface of the cylindrical body and an outer peripheral surface of the female electrode. 3. A male electrode is inserted into a female electrode having a cylindrical shape with a bottom, and an inner peripheral surface of the female electrode and the male electrode are brought into contact with each other for electrical conduction, and sealing is provided outside a contact portion. A characteristic waterproof electrode.