JPS6253908B2 - - 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 configurations and their problems Generally, in order to improve waterproof performance of connectors for equipment used underwater, the connecting pins are integrally molded with resin, and the seal between the housing and the cord is tightened with strong force using metal fittings. However, the structure is complicated and the cost is also high.

OBJECTS OF THE INVENTION In view of the above-mentioned problems, the present invention provides a waterproof connector for equipment that can obtain a high waterproof effect with a small force, has a simple structure, and is low in cost.

Structure of the Invention In order to achieve the above object, the waterproof connector for equipment of the present invention includes a cylindrical housing that holds a connecting pin contact and a socket contact, and a cylindrical housing that holds a connecting pin contact and a socket contact through a lead wire. a connected cord, rubber bushings having a conical outer circumferential surface and located at both ends of the housing and press-fitted into the cord; and two cylindrical covers surrounding the rubber bushing and the housing; The rubber bushings are passed through tapered holes at both ends of the cover, and the housing and the rubber bushings at both ends are sandwiched between the two covers, so that the tapered holes at both ends of the cover are inserted into the rubber bushings. With this configuration, even if bending or tensile force is applied to the cord at the connection part, the waterproof seal part will be held at a constant pressure, so the waterproof effect will not be impaired. A high waterproofing effect can be obtained with a small amount of force, and since the structure is simple, it can be obtained at low cost.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to the accompanying drawings. FIG. 1 shows an in-bath foaming machine, in which a body 2 is attached to the water of a bathtub 1 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 a device, a connector that electrically connects internal functional parts has a configuration as shown in FIGS. 2 and 3. That is, 5 is a cylindrical cover that surrounds the housing to be described later, 6 is a cover that faces this cover 5 and surrounds the housing to be described later, 7 and 7 are cords having a circular cross section, 8 is a lead wire of the cord 7, and 9 is a cord whose outer peripheral surface is A conical rubber bushing, 10 a cylindrical housing on the socket side, 11 a cylindrical housing on the pin side, 12 a socket contact fixed to the housing 10,
13 is a connecting pin contact fixed to the housing 11, and 14 is an O-ring.

The connector portion will be explained in detail with reference to FIGS. 2 to 4. Lead wires 8 of cords 7 and 7 are caulked to the socket contact 12 and pin contact 13, and are fixed to the housing 10 and the housing 11, respectively. Moreover, the housing 10 and the housing 11 have a cylindrical shape, and the housing 11 also serves as an inner fixing wall for the O-ring 14. A rubber bushing 9 is press-fitted into the cord 7 and is in close contact with the end surfaces of the housings 10 and 11. The cover 5 and the cover 6 are bayonet connected with a protrusion 15 and a groove 16, and the fitting part is sealed by compressing an O-ring 14, and the outlet of the cord 7 is sealed by compressing a rubber bushing 9. There is. The inner diameters of the cord outlet holes 17 on the end faces of the covers 5 and 6 are tapered, and the conical surface on the outer periphery of the rubber bushing 9 is also tapered, with the angles of the tapers being different.
If these two angles are the same, when the rubber bushing 9 is compressed by the covers 5 and 6, a large amount of force is required because the covers 5 and 6 come into contact with each other at their surfaces. For this reason, the rubber bushing 9 and the covers 5, 6 are made to touch each other along a line at different angles. Therefore, the rubber bushing 9 can be compressed and sealed with a small force.

Effects of the Invention As described above, the waterproof connector of the present invention is able to enhance the waterproof effect with a small force by paying particular attention to the relationship between the rubber bushing and the cover, and the effect is extremely large.

[Brief explanation of the drawing]

Fig. 1 is a side sectional view showing a bath foaming machine according to an embodiment of the present invention in use, Fig. 2 is an exploded perspective view of the connector, Fig. 3 is a sectional view of the connector, and Fig. 4
The figure is a diagram showing the relationship between the rubber bushing and the cover. 5, 6... Cover, 7... Cord, 9... Rubber butting, 10, 11... Housing, 12...
...Socket contact, 13... Connection pin contact, 14... O-ring, 17... Hole.

Claims (1)

[Claims] 1. A cylindrical housing holding a connecting pin contact and a socket contact, a cord connected to the connecting pin contact and the socket contact via lead wires, and a cord located at both ends of the housing and press-fitted into the cord, and a rubber bushing with a conical outer peripheral surface, and two cylindrical covers surrounding the rubber bushing and the housing, the conical rubber bushings being passed through tapered holes at both ends of the cover, and being connected to the housing. A waterproof connector for equipment configured such that the rubber bushings at both ends are sandwiched between the two covers, so that the tapered holes at both ends of the cover are inserted into the rubber bushings.