JPH08339863A - Connecting structure for connector - Google Patents

Abstract

PURPOSE: To provide a sufficient waterproofing effect by facilitating mounting/ demounting also to reduce a cost further to simplify constitution. CONSTITUTION: A plug connector 1 is constituted by a cylindrical plug 3 protruded from a tip end of a molded part 2 of insulation coating an internal conductor and a sleeve 5 fitted to a groove 4 formed in a tip end of the molded part 2 to extend in a peripheral direction. On the other hand, a connector receiving part 6 of receiving this plug connector 1 is connected to be constituted by a jack 7 connected to the plug 3 of the connector 1 and by a case 9 of holding a printed board 8 of mounting this jack 7 and the other electric part. The sleeve 5, annularly formed with a flexible material, is formed in a conical shape of spreading its tip end side in a tip end direction. Consequently, in the case of connecting the plug connector 1 to the jack 7 of the connector receiving part 6, by adhesion of the tip end of the sleeve 5, having flexibility, to an external surface of the case 9, a connecting part A between the plug 3 and the jack 7 is sealed from the outside.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connector connecting structure composed of a connector and a connector receiving portion, and more particularly to a connector connecting structure suitable for use in a portion requiring waterproof and dustproof properties.

[0002]

2. Description of the Related Art FIG. 3 is a diagram showing a conventional connecting structure of a plug connector. The plug connector 11 is used, for example, as a DC connector for a charger, and has a cylindrical plug 3 protruding from the tip of the molded portion 12. The plug connector 11 is detachably connected to the jack 7 on the connector receiving portion 6 side. Jack 7 is
The pin jack 7 a on the + side inserted into the plug 3 and a spring-shaped ground terminal 7 b that contacts the outer periphery of the plug 3 are held by the printed circuit board 8. Jack 7
Are held in the case 9 together with the printed circuit board 8.

In the conventional connector connecting structure thus constructed, when the plug connector 11 is inserted into the jack 7, the tip of the molded portion 12 and the printed circuit board 8 are inserted.
A space is created between the case 9 and the case 9 that protects the. For this reason,
When this connector is applied to, for example, a DC plug connector used in a battery charging unit of a bicycle with electric auxiliary power, water drops such as rainwater pass through between the mold unit 12 and the case 9 and the plug 3 and the jack 7 are discharged. Connection part A
There is a problem of getting in. Therefore, in the conventional plug connector 11, the periphery of the contact surface between the mold portion 12 and the case 9 is filled with a sealing material, or the mold portion 12 is sealed.
By screwing the case 9 and the case 9 together, the connection part of the plug 3 and the jack 7 was sealed and protected from water droplets.

[0004]

However, in the conventional connector described above, in the former case, the periphery of the contact surface on the mold part and the jack side must be filled with the sealing material every time the connection is made, In addition, when the connection is stopped, the buried sealing material has to be removed, which is troublesome. Even in the latter case, there is a problem that screwing is required every time the connector is connected, and it takes time and effort to frequently insert and remove the connector.

The present invention has been made in view of the above problems, and provides a connector connecting structure which is easy to put on and take off, inexpensive, and capable of obtaining a sufficient waterproof effect with a simple structure. The purpose is to do.

[0006]

SUMMARY OF THE INVENTION A connector connecting structure according to the present invention includes a connector having a first conductor provided at a tip of a mold portion, the connector being detachably held, and the connector being mounted at the time of mounting the connector. In a connection structure of a connector including a second conductor that is connected to one conductor and a connector receiving portion that holds the second conductor, the connector receiving portion of the connector is provided at a tip of a mold portion of the connector. A flexible sleeve having a conical shape is provided which is in close contact with the holding member at the time of mounting on the connecting member and which spreads in the distal direction to seal the connection portion of the first and second conductors from the outside.

The sleeve is detachably attached to, for example, the tip of the molded portion of the connector.

[0008]

According to the connector connecting structure of the present invention, when the connector is mounted in the connector receiving portion, the flexible sleeve is brought into close contact with the holding member, so that the first conductor and the second conductor are attached. Since the connection part with the is sealed from the outside, even if water droplets are around the contact part of the connector and the connector receiving part, the water drop does not enter the inside from the contact part and the first and second conductors The connection part of can be waterproofed.

If the sleeve is detachably attached to the tip of the mold portion, the sleeve can be removed when waterproofing is unnecessary. That is, the sleeve can be attached to the connector only when necessary, and the connector can be effectively used.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a D according to an embodiment of the present invention.
It is a figure which shows the connection structure of a C plug connector.

The plug connector 1 includes a mold portion 2 for insulatingly coating the inner conductor, a cylindrical plug 3 protruding from the tip of the mold portion 2, and a groove 4 formed at the tip of the mold portion 2 and extending in the circumferential direction. And the sleeve 5 fitted to the. On the other hand, the connector receiving portion 6 for receiving the plug connector 1 holds the jack 7 connected to the plug 3 of the connector 1, the printed board 8 on which the jack 7 and other electric parts are mounted, and the printed board 8. It is constituted by the case 9.

The plug 3 has an inner conductor 3a formed on the inner peripheral portion and an outer conductor 3b formed on the outer peripheral portion. Both are insulated from each other, the power supply voltage (DC) is supplied to the inner conductor 3a, and the ground voltage (GN) is supplied to the outer conductor 3b.
D) is supplied.

The jack 7 has a pin jack 7a and a spring-shaped ground terminal 7 corresponding to the structure of the plug 3 described above.
and b are provided respectively. The pin jack 7a is
It is connected to the inner conductor 3a of the plug 3 and supplies a power supply voltage to the printed board 8. The ground terminal 7b is connected to the outer conductor 3b of the plug 3 and supplies a ground voltage to the printed circuit board 8.

FIG. 2 is an exploded perspective view of the tip of the connector. The sleeve 5 mounted in the groove 4 at the tip of the mold portion 2 is made of a flexible material such as elastomer, for example, soft synthetic rubber, elastic plastic, or the like in a ring shape, and the tip side thereof has a conical shape that spreads in the tip direction. Has become.

According to this plug connector connection structure,
When the plug connector 1 and the jack 7 of the connector receiving portion 6 are connected, as shown in FIG. 1, the flexible tip of the sleeve 5 is brought into close contact with the outer surface of the case 9 so that the plug 3 and the jack 7 are connected to each other. The connection part A is sealed from the outside. For this reason, even if water droplets are attached around the contact portion of the plug connector 1 and the case 9, the connection portion A can be waterproofed without entering the inside from the contact portion.

Further, according to this embodiment, since the sleeve 5 is removable, the sleeve 5 can be removed when waterproofing is unnecessary. That is, the sleeve 5 can be attached to the plug connector 1 only when necessary, and the plug connector 1 can be effectively used.

In the above-mentioned embodiment, the DC plug connector is described as an example, but it goes without saying that the present invention can be applied to other plug connectors. Further, as the shape of the connector, the present invention can be applied to the connector of the type in which the conductor projects from the tip of the mold portion to the connector of the type in which the conductor retracts from the tip of the mold portion.

[0018]

As described above, according to the present invention,
When the connector is attached to the connector receiving portion, the flexible sleeve is brought into close contact with the holding member, so that the connecting portion between the first conductor and the second conductor is sealed from the outside, so that water droplets are prevented. Even if it is attached around the contact portion of the connector and the connector receiving portion, the connection portion of the first and second conductors can be waterproofed without entering inside from the contact portion. Further, according to the present invention, since the sealing material, the screw and the like are not used, the connector can be easily inserted and removed.

[Brief description of drawings]

FIG. 1 is a diagram showing a connection structure of a plug connector according to an embodiment of the present invention.

FIG. 2 is a diagram showing a detailed structure of the connector.

FIG. 3 is a diagram showing a connection structure of a conventional plug connector.

[Explanation of symbols]

1, 11 ... Plug connector, 2, 12 ... Mold part, 3
... plug, 3a ... inner conductor, 3b ... outer conductor, 4 ... groove,
5 ... Sleeve, 6 ... Connector receiving portion, 7 ... Jack, 7
a ... ground terminal, 7b ... pin jack, 8 ... printed circuit board, 9 ... case, A ... connection part.

Claims (1)

[Claims] 1. A connector in which a first conductor is provided at a tip of a mold part, and a second conductor which detachably holds the connector and is connected to the first conductor when the connector is mounted. In a connection structure of the connector including a connector receiving portion including a holding member that holds the connector, the tip of the mold portion of the connector is closely attached to the holding member when the connector is attached to the connector receiving portion. A connection structure for a connector, characterized in that a flexible sleeve having a conical shape that expands in a tip direction is provided to seal the connection portion of the first and second conductors from the outside.