JPH09129301A - Water-proof structure of connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To separate a microphone earphone for a portable telephone set or the like from a main body without unnecessarily resisting an unexpected exter nal force by securing necessary water-proofness for a connector part for connecting the microphone/earphone to the main body. SOLUTION: An outer ring wall 14a formed by surrounding a plug hole is provided in the outer surface 10 of a communication equipment main body, a skirt-form elastic water-proof cover 20 tightly fitted in the outer ring wall is provided in the connector of a microphone/earphone side, a water draining hole 14c is provided in the elastic water-proof cover 20, a projecting step part 11 is provided inside the outer ring wall and the openings 12a and 13a of the plug hole are arranged to face the surface of the step part. An elastic water- proof gasket 30 is provided in the connecting part of the microphone/earphone side and the tip part of the plug hole is projected. Thus, required water- proofness is secured for a connection part between the connector of the communication equipment main body side and the connector of the microphone/earphone side by tight adhesion between the elastic water proof cover and the outer ring wall and in emergency when an unexpected external force is applied, the connectors are quickly separated from each other.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a small mobile communication device such as a mobile phone, and more particularly to a waterproof structure for a connector of a small electronic device which may be used outdoors.

[0002]

2. Description of the Related Art FIG. 4 shows a small mobile communication device in which a communication device body 1 and a microphone or earphone (not shown) are connected via a connector, and a connector provided on the communication device body 1 side. 2 shows an example of a conventional structure of a connector part in which the terminal pins 5 and 6 of the microphone earphone side connector 4 are inserted into the plug holes 2 and 3 of FIG. In this case, a waterproof packing 7 made of rubber or the like is provided between the connection surface 1a of the communication device main body 1 and the connection surface 4a of the microphone / earphone side connector 4 in the connector portion, and water drops, etc. Is prevented from invading the inside of the communication device main body 1 through the plug holes 2 and 3 through the terminal pins 5 and 6, so that the device function is prevented from being impaired.

On the other hand, FIG. 6 shows another conventional waterproof structure. In this example, in order to prevent the waterproof property from being impaired due to insufficient pressing of the waterproof packing 7 when the microphone earphone side connector 4 is connected, The microphone earphone side connector 4 after connection is tightened to the communication device main body 1 with the screw 8 and the microphone earphone side connector 4 is forcibly crimped to the waterproof packing 7 to enhance the waterproofness of the connector portion.

[0004]

By the way, in the conventional example shown in FIG. 4, the microphone earphone side connector 4 is connected to the communication device main body 1 while the waterproof packing 7 is not sufficiently pressed.
When connected to, as shown by the arrow in FIG. 5, water droplets entering from both sides of the waterproof packing 7 propagate through the terminal pins 5 and 6,
There is a risk that it may enter the communication device main body 1 through the plug holes 2 and 3, and the reliability of the waterproofness of the connector portion is insufficient.

On the other hand, in the other conventional example shown in FIG. 6, since the microphone earphone side connector 4 is tightened with the screw 8, the insufficient pressure of the waterproof packing 7 which is a problem in the conventional example of FIG. There is an advantage of eliminating it. However,
In this case, the screw 8 has to be attached and detached each time, and the attachment and detachment of the microphone earphone side connector 4 to and from the communication device body 1 is troublesome, so that the screw 8 can be tightened in an emergency when the cord is caught. There is a problem that the communication device body 1 cannot be quickly pulled out.

An object of the present invention is to ensure a required waterproof property of a connector portion for electrically connecting a microphone earphone in a small portable communication device such as a mobile phone and to separate the connector without forcibly resisting an unexpected force. Is to do so.

[0007]

According to the present invention, there is provided a waterproof connector structure for a communication device, wherein a terminal pin of a connector of a microphone earphone is inserted into a plug hole of a connector of a communication device main body to electrically connect the same. An outer ring wall surrounding the plug hole is provided on the outer surface of the main body of the machine, and a skirt-shaped elastic waterproof cover that can be closely fitted to the outer ring wall is provided on the microphone earphone side connector, and further, the elastic waterproof cover. A drainage hole is provided in the outer ring wall, and a step portion protruding further inside the outer ring wall is provided so that the surface of the step portion faces the opening of the plug hole. An elastic waterproof packing is provided on the earphone side joint, and the tip of the plug hole is projected.

With the above construction, the elastic waterproof cover and the outer ring wall are closely fitted to each other, so that the required waterproof property at the connecting portion between the connector of the communication device and the connector of the microphone / earphone can be ensured. In the event of an emergency in which the two work, the two can be separated immediately, so that it is possible to prevent an excessive load from acting on the connector portion and prevent damage or the like.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION A waterproof structure for a connector of a small electronic device according to the present invention will be described below. It should be noted that, in the drawings, members that are the same as or similar to the members shown in the conventional example will be denoted by the same reference numerals.

As shown in FIG. 1, a small electronic device, for example, a small mobile communication device has plug holes 2 and 3 of a connector provided in a communication device body 1, and a microphone earphone side connector is provided in the plug holes 2 and 3. The terminal pins 5 and 6 of 4 are inserted to form a connector portion for electrically connecting the microphone earphone side connector 4.

As shown in FIG. 2, in the portion of the connector portion where the plug holes 2 and 3 are exposed to the outside, the step portion 11 is made higher than the outer surface 10 of the communication device body 1. Are formed. The plug holes 2 and 3 are formed, for example, by press-fitting cylindrical bushes 12 and 13 having conductivity, and the plug hole mouth portions 12a and 13a of the bushes 12 and 13 are formed.
Are projected further outward from the surface of the step portion 11. The hole openings of the plug holes 2 and 3 are formed through the step portion 11.
That is, the reason why the plug hole mouths 12a and 13a are located outside the outer surface 10 is that, as will be described later, water droplets and the like travel along the outer surface 10 more than when they are flush with the outer surface 10. This is because it is difficult for the plug hole openings 12a and 13a to come into close contact with the elastic waterproof packing described later with a high surface pressure.

Further, in the connector portion on the side of the communication device main body 1, an annular locking portion 14 is formed so as to surround the step portion 11 so as to project from the outer surface 10. The annular locking portion 14 is composed of an outer ring wall 14a and an annular locking recessed groove 14b formed between the step portion 11, and the outer ring wall 14a has a central side so that the surrounding space is tapered. Is inclined to. A drain hole 14c is formed in the lower portion of the outer ring wall 14a in the vertical direction.

On the other hand, the microphone / earphone-side connector 4 has terminal pins 5 and 6 projecting from the side surface facing the plug holes 2 and 3 of the communication device body 1, and covers the terminal pins 5 and 6 from the outside. Barrel-shaped skirt-shaped elastic waterproof cover 2
0 is provided. The elastic waterproof cover 20 is formed of an elastic material such as rubber or synthetic resin, and the contour of the elastic waterproof cover 20 is similar to the outer ring wall 14a and is larger than the outer ring wall 14a. ,
The tip edge portion thereof is fitted into the engaging groove 14b of the annular engaging portion 14 formed in the communication device body 1 so as to be elastically adhered.

Further, in the case of the present embodiment, an elastic waterproof packing 30 is adhered to the joint surface on the microphone earphone side connector 4 side between the surfaces where the communication device body 1 and the microphone earphone side connector 4 contact each other. Have been installed. The elastic waterproof packing 30 has a size that surrounds the two terminal pins 5 and 6 and fits inside the skirt-shaped elastic waterproof cover 20, and is made of an elastic material such as rubber like the elastic waterproof cover 20. It is molded.

With the above construction, as shown in FIGS. 1 and 2, the connector section in which the communication device body 1 and the microphone / earphone side connector 4 are electrically connected operates as follows. That is, when the terminal pins 5 and 6 are inserted into the plug holes 2 and 3, the tip edge portion of the elastic waterproof cover 20 on the microphone earphone side connector 4 side is the outer ring of the annular locking portion 14 on the communication device body 1 side as illustrated. The groove 14b engages with the wall 14a elastically.
Fits. At this time, the elastic waterproof cover 20 is attached to the outer ring wall 14
It is elastically deformed into a reduced shape by engaging with a, and firmly adheres to the outer ring wall 14a on the side of the communication device main body 1 by the elastic restoring force to restore the original shape as shown in FIG. Therefore, in the connector portion of the communication device body 1 and the microphone / earphone side connector 4, the elastic waterproof cover 2 is formed in the first step.
A value of 0 prevents water droplets and the like from entering. If water droplets or the like penetrate, the water droplets will be absorbed on the outer surface 10 of the communication device body 1 side.
It is blocked by the stepped portion 11 projecting from, and gravitationally escapes to the outside from the drain hole 14c in the lower portion of the cover.

In the case of one elastic waterproof packing 30,
The plug hole mouths 12a and 13a which are pressed against the surface of the stepped portion 11 on the side of the communication device body 1 by the pushing force of the connector 4 of the microphone earphone side to the communication device body 1 and protruded.
However, as shown in FIG. That is, in the second stage, the watertightness of the periphery where the terminal pins 5 and 6 are inserted into the plug holes 2 and 3 is ensured, and thus the connector portion is completely waterproof.

If a cord or the like (not shown) is inadvertently caught during carrying or communication, the external force causes the elastic waterproof cover 20 and elastic waterproof packing 30 on the microphone earphone side connector 4 side to come off, and the terminal pins 5, 6 Is removed from the plug holes 2 and 3, the microphone earphone side connector 4 is separated from the communication device body 1. By this action, as in the case of tightening with the screw 8 shown in the conventional example,
The communication device body 1 and the microphone / earphone side connector 4 can be prevented from being damaged.

In the above embodiment, an example is shown in which the elastic waterproof packing 30 is attached to the microphone earphone side connector 4 side by adhesion or the like, but the invention is not limited to this.
As shown in FIG. 3, in the step portion 11 on the side of the communication device body 1, the contact surface of this surface surrounds the plug hole openings 12a and 13a which are the hole openings of the plug holes 2 and 3. The waterproof packing 40 can be attached by adhesion or the like, and the elastic waterproof cover 20 may be integrally formed with the microphone earphone side connector 4.

[0019]

As described above, according to the present invention, by attaching the elastic waterproof cover, the elastic restoring force of the waterproof cover enhances the close contact with the communication device main body and further attaches it to the joint surface. The required waterproofness can be ensured by the cooperation with the elastic waterproof packing, and in the case of an emergency when an unexpected external force acts such as when the cord is inadvertently caught while using in a mobile phone, the communication device body Since the side connector of the microphone earphone can be immediately separated, it has an excellent effect of preventing the connector part from being damaged.

[Brief description of the drawings]

FIG. 1 is an assembled sectional view showing a first embodiment according to the present invention.

FIG. 2 is an exploded sectional view of the first embodiment.

FIG. 3 is a cross-sectional view of an example of mounting the waterproof packing of the second embodiment on the communication device main body side.

FIG. 4 is an assembled sectional view showing a waterproof structure of a conventional example.

FIG. 5 is a partially enlarged cross-sectional view showing an infiltration form of water droplets and the like in the conventional example of FIG.

FIG. 6 is an assembled sectional view showing another conventional example by screw fastening.

[Explanation of reference numerals] 1 communication device body 2 plug hole 3 plug hole 4 microphone earphone side connector 5 terminal pin 6 terminal pin 11 stepped portion 14 annular locking portion 14c drain hole 20 elastic waterproof cover 30 elastic waterproof packing

Claims (4)

[Claims] 1. A waterproof structure for a connector of a communication device, wherein a terminal pin of a connector of a microphone / earphone is inserted into a plug hole of a connector of a communication device body for electrical connection, and the plug hole is provided on an outer surface of the communication device body. A waterproof structure for a connector, characterized in that an outer ring wall that surrounds the outer ring wall is provided, and a skirt-shaped elastic waterproof cover that can be fitted and closely fitted to the outer ring wall is provided on the microphone earphone side connector. 2. The waterproof structure for a connector according to claim 1, wherein the elastic waterproof cover is provided with a drain hole. 3. The waterproof structure for a connector according to claim 1, wherein a step portion protruding inside the outer ring wall is provided, and a hole of the plug hole is exposed on a surface of the step portion. 4. The waterproof structure for a connector according to claim 1, wherein an elastic waterproof packing is provided at the joint portion on the micro earphone side, and a tip portion of the plug hole is projected.