JPS6253909B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a waterproof connector for connecting electrical components of equipment used underwater, such as a bath foaming machine.

Conventional configuration and its problems Traditionally, this type of connector had to be waterproof, so the connecting pins were integrally molded with resin,
The seal between the housing and the cord was tightened with metal fittings, resulting in a complex structure and large size. Moreover, it also had the disadvantage of inevitably increasing costs.

OBJECTS OF THE INVENTION In view of the above problems, the present invention relates to a waterproof connector for equipment that has a simple and compact waterproof structure and is easy to assemble.

Structure of the Invention In order to achieve the above object, the waterproof connector for equipment of the present invention removably fits two housings each holding an end of a cord, electrically connecting these cords, and A cylindrical rubber bushing is watertightly covered at each end of the cord, and a tapered surface whose outer diameter gradually increases toward the end of the cord is provided on the outer periphery of the rubber bushing. providing a cylindrical cover that fits into and covers each of the housings;
The tips of these covers are butted together, a flange is provided on one of the covers, a thread is formed on the outer periphery of the end of the other cover, an annular groove is formed in the tip of at least one of these covers, and a ring-shaped groove is formed in the tip of at least one of the covers. An O-ring having a height greater than depth is fitted into the groove, and a cover holder having a locking periphery that is threaded on the inner surface and is locked to the flange of the cover is covered over the outer periphery of the cover; and tightening the tapered surface of the rubber bushing with the cover by tightening the screw of the cover, bringing the tip of the rubber bushing into close contact with the end surface of the housing, and making the tips of the two covers watertight via the O-ring. It is a configuration that is combined with

With this configuration, the waterproof structure becomes compact and convenient, and assembly becomes easy.

DESCRIPTION OF EMBODIMENTS A foaming machine while melting, which is an embodiment of the present invention, will be described below with reference to the accompanying drawings. Figure 1 shows an in-bath foaming machine.
is attached via a support 3. This body 2 houses functional parts such as a storage battery, a motor, a pump, and a control circuit.By driving the motor, outside air and water in the bathtub are taken in and ejected as air bubbles from the spout 4, producing a pine surge effect, etc. It's something you get.

In such devices, connectors for electrically connecting internal functional parts have a configuration as shown in FIGS. 2 and 3. That is, 5 is a cylindrical cover surrounding a housing to be described later, 6 is a cover facing this cover 5 and surrounding the housing to be described later, 7, 7 is a cord having a circular cross section, 8 is a lead wire of the cord 7, 9 is a rubber bushing, 10 1 is a cylindrical housing on the socket side, 11 is a cylindrical housing on the pin side, 12 is a socket contact fixed to the housing 10, and 13 is the housing 1.
1 is a connecting pin contact fixed, 14 is an O-ring, and 15 is a cover holder that is locked to the cover 6 and fastened to the screw of the cover 5.

The connector part will be explained in detail. Lead wires 8 of cords 7, 7 are caulked to the socket contact 12 and pin contact 13, and are held in the housing 10 and housing 11, respectively. A rubber bushing 9 is press-fitted into the cord 7 and is in close contact with the housings 10,11. A tapered surface 9A whose outer diameter gradually increases toward the end of the cord 7 is provided on the outer periphery of the rubber bushing 9, and cylindrical covers 5, 6 are provided so as to fit watertightly into this tapered surface 9A. are provided, and the cylindrical covers 5, 6 are provided with the housings 10, 11.
cover each. An annular groove 16 is formed at the tip of one cover 6, and an O-ring 14 having a height higher than the depth of the groove 16 is fitted into this groove 16. Also, a flange 6 is provided on the outer periphery of the cover 6.
A is provided, and a screw 5A is formed on the outer periphery of the end of the cover 5. The cover holder 15 has a screw 15A formed on its inner surface, and the cover 6
The cover holder 15 has a locking peripheral edge portion 15B that is locked to the flange portion 6A of the cover holder 15, and the cover holder 15 covers the outer periphery of the covers 5 and 6 and is attached to the screw 5A of the cover 5.
By screwing together and tightening the screw 15A,
the two covers 5 via the O-ring 14,
The tips of 6 are watertightly connected. In this case, the rubber bushings 9,
In order to tighten the tapered surfaces 9A, 9A of the rubber bushings 9, 9 and bring the tips of the rubber bushings 9, 9 into close contact with the end faces of the housings 10, 11, the spaces between the cover 5 and the cord 7 and between the cover 6 and the cord 7 are fixed watertight with the rubber bushings 9, 9, respectively. It is something that will be done.

Effects of the Invention As explained above, the waterproof connector of the present invention has
By tightening the cover holder to the cover, it is possible to simultaneously achieve the waterproof effect between the two covers by compressing the O-ring and the waterproof effect between the cover and the cord by compressing the bushing, and it is also easy to connect the cord waterproofly with the connector. Since the structure can be easily carried out and the structure is simple, it has excellent effects such as miniaturization and cost reduction.

[Brief explanation of the drawing]

FIG. 1 is a side view of a submerged foaming machine using a waterproof connector for equipment according to an embodiment of the present invention, FIG. 2 is an exploded perspective view of the connector, and FIG. 3 is a sectional view of the connector. 5, 6... Cover, 7... Cord, 9... Rubber butting, 10, 11... Housing, 12...
...Socket contact, 13...Connecting pin contact, 14...O ring, 15...Cover holder, 16...Groove.

Claims (1)

[Claims] 1. Two housings each holding an end of a cord are removably fitted together to electrically connect these cords, and each end of each cord is covered with a cylindrical rubber bushing in a watertight manner. A tapered surface is provided on the outer periphery of the rubber bushing, the outer diameter of which gradually increases toward the end of the cord,
A cylindrical cover is provided that fits in this tapered surface in a watertight manner and covers each of the housings, and the tips of these covers are brought into contact with each other. A thread is formed on the inner surface, an annular groove is formed in the tip of at least one of these covers, an O-ring having a height higher than the depth of the groove is fitted into the groove, and a thread is formed on the inner surface of the cover. A cover holder having a locking peripheral edge portion that is locked to the outer circumference of the cover is wrapped around the outer periphery of the cover, and is fastened to the screw of the cover to tighten the tapered surface of the rubber bushing with the cover, and at the same time, the tip of the rubber bushing is tightened. A waterproof connector for equipment, which is brought into close contact with the end face of the housing and watertightly connects the tips of the two covers via the O-ring.