JPH0421262Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a waterproof connector.

[Conventional technology]

Conventionally, waterproof connectors used outdoors, such as for road construction, have one male connector 20 connected to a mating female connector at the tip of a connector body made of rubber or the like and having a circular cross section, as shown in FIG. The other female connector 30 is formed by providing an annular groove 22 on the inner periphery of the hole 21, and the other female connector 30 is formed by providing an annular protrusion 31 on the outer periphery of the tip of a connector body made of rubber or the like and having a circular cross section. The tip of the female connector 30 is fitted into the fitting hole 21 at the tip of the male connector 20 to connect both connectors. Annular projection 3
1 to ensure that both the male and female connectors do not come off.

[The problem that the idea aims to solve]

In the waterproof connector configured as described above, the circumferential surface of the annular protrusion 31 of the female connector 30 is uniformly brought into close contact with the bottom surface of the annular groove 22 of the male connector 20 to ensure waterproofness. However, because the connector main body is round, there is a risk that if a person or bicycle carelessly rides on the connector placed on the road, the connector will roll and fall.

In order to prevent the danger of such round connectors, the male and female connectors are formed flat to prevent them from rolling. When both flat male and female connectors are connected, as shown in Figure 6. As shown, the tightening force of the flat male connector 40 causes the central part of the flat female connector 50 to dent inward, creating a gap between the two connectors, and rainwater, etc. can enter through this gap, resulting in electrical leakage accidents, etc. A problem arises in that it causes

The present invention solves the above-mentioned problems, and is safe because there is no risk of falling even if a person or bicycle rides on it when placed on a road, etc., and is completely waterproof. The purpose is to provide connectors.

[Means to solve the problem]

In order to achieve the above object, the waterproof connector of the present invention has two male connectors 1 which are plugged into each other and connected to each other.
A female connector 10 is formed with an elastic insulating material such as rubber or plastic to have a flat outer shape, and the center portion of the opposing long sides bulges outward on the outer periphery of the tip of the female connector 10. An annular groove 11 having an elliptical cross-sectional shape and a groove bottom 11a is provided, and an oval-shaped inner circumferential surface is provided on the inner periphery of the tip fitting hole 2 of the male connector 1, and the opposing long sides are straight. The female connector 10 is provided with an annular protrusion 3 having a shaped shape.
The distal end of the male connector 1 is fitted into the distal end fitting hole 2 of the male connector 1 to connect both connectors, and the annular protrusion 3 of the male connector 1 is inserted into the annular groove 11 of the female connector 10.
It is a tight fit.

[Effect]

When the male connector 1 and the female connector 10 are plugged into each other and placed on a road, etc., even if a person, bicycle, etc. accidentally rides on the connector, the outer shape of the connector will be flat. Since it does not roll like the conventional method, there is no risk of it falling over and it is safe.

When the tip of the female connector 10 is fitted into the tip fitting hole 2 of the male connector 1 and the annular protrusion 3 of the male connector 1 is fitted into the annular groove 11 of the female connector 10, the female connector 10 Groove bottom surface 1 of annular groove 11 of
1a has an elliptical cross section with the central part of the long side bulging outward, and the shape of the inner peripheral surface of the annular protrusion 3 on the inner periphery of the tip fitting hole 2 of the male connector 1 that fits into the annular groove 11. has an oval shape with straight long sides and an oval shape, and since the annular groove 11 and the annular protrusion 3 are made of an elastic insulating material, the linear long side portion of the oval-shaped annular protrusion 3 is , comes into contact with the central part of the long side of the groove bottom surface 11a of the annular groove 11 which has an elliptical cross-sectional shape and is elastically tightened. The side portions are elastically deformed and elastically come into close contact with each other. Due to this elastic close contact, no gap is formed between the fitting contact surfaces of the annular protrusion 3 and the annular groove 11 of both the female and male connectors, so that water is prevented from entering and the connectors are completely waterproof.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings.
Fig. 1 shows an embodiment of the male connector and female connector of the present invention, Fig. 2 shows a cross section taken along the line X-X of Fig. 1, and Fig. 3 shows a cross section taken along the line Y-Y of Fig. 1. shows.

In each figure, 1 is a male connector made of an elastic insulating material such as rubber or plastic and formed into a flat shape, and 10 is a female connector made of an elastic insulating material such as rubber or plastic and formed into a flat shape. It is a connector.

The male connector 1 has a flat tip fitting hole 2 at its tip into which the tip of the female connector 10 to be connected is fitted, and an annular protrusion 3 on the inner periphery of the tip fitting hole 2. establish. As shown in FIG. 2, the shape of the inner circumferential surface of the annular projection 3 is formed into an oval oval shape with opposing long sides parallel to each other. 4
5 is a plug terminal protruding into the tip fitting hole 2 of the male connector 1, and 5 is an electric wire connected to the plug terminal 4.

The female connector 10 has a distal end formed into a flat shape so as to fit into the flat distal end fitting hole 2 of the male connector 1, and an annular groove 11 is provided on the outer periphery of this distal end. This annular groove 11 is a groove bottom surface 11
As shown in FIG. 3, a is formed into an elliptical shape in which the central portions of the opposing long sides bulge outward. 12 is a blade receiving terminal into which the plug blade terminal 4 of the male connector 1 is inserted and connected, and 13 is an electric wire connected to this blade receiving terminal 12.

As shown in FIG. 4, in the waterproof connector of the present invention constructed as described above, the tip of the female connector 10 is inserted into the tip fitting hole 2 of the male connector 1.
The plug blade terminal 4 and the blade receiving terminal 12 are inserted and connected, and the annular protrusion 3 on the inner periphery of the tip fitting hole 2 of the male connector 1 is fitted into the annular groove 11 on the outer periphery of the tip of the female connector 10.

In this way, when the oval-shaped annular protrusion 3 of the elastic insulating material with the long side of the inner peripheral surface being straight is fitted into the annular groove 11 of the elastic insulating material with the groove bottom surface 11a having an elliptical cross-section,
Since the linear long side portion of the inner circumferential surface of the annular projection 3 elastically contacts and presses the long side portion bulging outward at the center of the groove bottom surface 11a of the annular groove 11, the female connector 10 The groove bottom surface 11a of the annular groove 11 is elastically tightened by the annular protrusion 3 of the male connector 1. Therefore, the central long side portion of the groove bottom surface 11a of the annular groove 11 and the linear long side portion of the annular protrusion 3 are deformed and come into elastic close contact with each other.
Due to this elastic close contact, no gap is formed between the mating contact surfaces of both the female and male connectors through which water can enter, making it completely waterproof.

Furthermore, if both the male and female connectors connected as described above are placed on a road, etc., and a person or bicycle accidentally rides on the connector, the Since the connector is flat, it does not roll like conventional round connectors, so there is no risk of it falling over.

[Effect of idea]

As mentioned above, the waterproof connector of the present invention has male type,
Since both female connectors are formed flat, when placed on a road, etc., even if a person or a bicycle rides on it, it will not roll, so there is no risk of it falling over, making it safe.

In addition, by tightly fitting an annular protrusion with an oval inner circumferential surface shape with straight long sides into an annular groove with a bottom surface of an elliptical cross-sectional groove whose long sides bulge outward, The mating contact surfaces of both the female and male connectors elastically fit tightly together, and no gaps are formed for water to enter, making it completely waterproof, eliminating the risk of electrical leakage accidents, and maintaining waterproof properties that are stable over time. A safe waterproof connector can be obtained.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of an embodiment of the male connector and female connector of the present invention, Fig. 2 is a sectional view taken along line X-X of Fig. 1, and Fig. 3 is a sectional view taken along line Y-Y of Fig. 1. Figure, 4th
The figure is a longitudinal sectional view showing the connection state of a male connector and a female connector, Figure 5 is a diagram showing a conventional waterproof connector, and Figure 6 is an explanatory diagram of a waterproof connector formed into parallel flat shapes. . 1...Male connector, 2...Tip fitting hole, 3...
... Annular projection, 10 ... Female connector, 11 ... Annular groove, 11a ... Groove bottom surface.

Claims (1)

[Scope of utility model registration request] The male connector 1 and the female connector 10 are formed into a flat shape using an elastic insulating material, and the outer periphery of the tip of the female connector 10 has an elliptical cross section in which the central portion of the opposing long sides bulges outward. An annular groove 11 having a groove bottom surface 11a is provided, and an annular protrusion 3 having an oval-shaped inner circumferential surface with straight opposing long sides is provided on the inner circumference of the tip fitting hole 2 of the male connector 1. The distal end of the female connector 10 is fitted into the distal end fitting hole 2 of the male connector 1 to connect both connectors, and the annular protrusion of the male connector 1 is inserted into the annular groove 11 of the female connector 10. 3. A waterproof connector characterized by tightly fitting.