JP3477629B2 - Waterproof connector - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connector,
More specifically, it belongs to a connector having a waterproof function. 2. Description of the Related Art A conventional waterproof connector has a base hood having an opening for connecting the connector, and is movably attached to the base hood to cover the opening and to provide a cover other than the opening. A waterproof cap fitted to the base hood at a predetermined portion; and a waterproof cap attached to the waterproof cap, interposed in a compressed state between the waterproof cap and the base hood, and sealing the opening in a watertight state. Some include waterproof packing. [0003] In this conventional waterproof connector, a waterproof state (when a connector cannot be connected), that is, a state in which a waterproof cap is fitted to an opening of a base hood, and a non-waterproof state (when a connector can be connected). ), That is, when the waterproof connector is fitted to a predetermined portion of the base hood, the waterproof packing comes into pressure contact with the base hood on the same surface. [0004] As described above, in the case of the conventional waterproof connector, the waterproof packing comes into pressure contact with the base hood on the same surface in the waterproof state and the non-waterproof state. The waterproof packing deteriorated quickly and was poor in reliability. [0005] Therefore, an object of the present invention is to provide a highly reliable waterproof connector in which the waterproof packing does not easily deteriorate. According to the present invention, there is provided a base hood having an opening for connecting a connector, movably attached to the base hood, covering the opening, and opening the opening. A waterproof cap fitted to the base hood at a predetermined portion other than the portion, a waterproof cap attached to the waterproof cap, interposed in a compressed state between the waterproof cap and the base hood, and the opening in a watertight state. In the waterproof connector including a waterproof packing, the surface of the waterproof packing that presses against the base hood is different between when the waterproof cap covers the opening and when the waterproof cap is fitted to the predetermined portion. A waterproof connector characterized by doing as described above is obtained. FIG. 1 shows a waterproof connector according to a first embodiment of the present invention, in which (a) is a longitudinal sectional view, and (b) is a section taken along line bb of (a). FIGS. 2 and 3 show the essential parts of the waterproof connector shown in FIG. 1. FIG. 1 (a) is an enlarged view of part A in FIG. 1, (b) is an enlarged view of part B in FIG. 1, and FIG. FIG. 4A shows a waterproof packing of a waterproof connector, FIG. 4A is a perspective view of a partially cut-out state, FIG. 4B is an enlarged view of a portion C in FIG. 4A, FIG. 4 is a front view of the waterproof connector shown in FIG. 5A and 5B show the waterproof connector shown in FIG. 1, wherein FIG. 5A is a perspective view of the waterproof connector in a waterproof state, and FIG. 5B is a perspective view of the waterproof connector in a non-waterproof state. With reference to FIGS. 1 to 5, a waterproof connector 1 of the present embodiment includes a base hood 2, a waterproof cap 3, and a waterproof packing 4. The base hood 2 is substantially box-shaped, and has an opening 20 at one end. The opening 20 has a flange surface 21 formed on the outside of a position slightly approaching the bottom of the base hood 2 in the depth direction of the base hood 2 from the opening end. In the base hood 2, a connector 5 is arranged. The connector 5 has a fitting portion 50 protruding from the opening 20 for connection with a mating connector (not shown). At the end of the base hood 2 opposite to the opening 20, a waterproof cap 3 is fitted.
A fitting portion 22 for retaining the waterproof cap 3 is formed in this portion. The cross-sectional shape of the fitting portion 22 is substantially convex. The waterproof cap 3 is substantially box-shaped, covers the opening 20 of the base hood 2, is fitted to the base hood 2 by a fitting portion 22, and is locked here. A mounting portion 30 for mounting the waterproof packing 4 is formed inside the waterproof cap 3. The mounting section 30 has a mounting surface 31 and a groove 32. 4 to 6, the waterproof cap 3 has a sub-link 3 as shown in FIG.
3, the main link 34, and the first to third pins 35,
It is attached to the base hood 2 by 36,37. The sub-link 33 has a substantially oval shape, one end of which is rotatably connected to the base hood 2 by a first pin 35, and the other end of which is turned to one end of the main link 34 by a second pin 36. It is movably connected. The main link 34 has a substantially hexagonal shape, and as shown in FIG. 1B, is bent in a crank shape, and the other end is formed in a third shape.
The pin 37 is rotatably connected to the waterproof cap 3. Thereby, the waterproof cap 3 is movably attached to the base hood 2 and is fitted to the base hood 2 at two places of the opening 20 and the fitting portion 22 as shown by a two-dot chain line in FIG. It is removable. The waterproof packing 4 is made of an elastic material, has a substantially frame shape when viewed as a whole, and is connected to the wedge-shaped portion 40 and the rear end side surface of the wedge-shaped portion 40 as is apparent from the cross-sectional shape thereof. A flange portion 41 and an insertion portion 42 connected to the rear end of the wedge-shaped portion 40. The insertion portion 42 is inserted into the groove 32 of the mounting portion 30 formed on the inner surface of the waterproof cap 3. The waterproof packing 4 is fixed on the mounting surface 31. This waterproof packing 4 is a waterproof cap 3
Is fitted in the opening 20 or the fitting portion 22,
The waterproof cap 3 is interposed between the waterproof cap 3 and the base hood 2 in a compressed state. When the waterproof cap 3 is fitted into the opening 20, the waterproof packing 4 is attached to the base hood 2 and the waterproof cap 3. Is sealed in a watertight state. The waterproof packing 4 is provided with the waterproof cap 3.
The surface that is in pressure contact with the base hood 2 is different between when it is fitted into the opening 20 and when it is fitted into the fitting part 22. That is, when the waterproof cap 3 is fitted into the opening 20, the waterproof packing 4 is configured such that the distal end surface of the wedge-shaped portion 40 is pressed against the flange surface 21 of the opening 20. When the waterproof packing 4 is fitted to the fitting portion 22, the flange 41 of the waterproof packing 4
2 is pressed against the lower end surface. in this way,
When the waterproof cap 3 is fitted into the opening 20 and when the fitting 2
Since the pressure contact surface with the base hood 2 is different between the case where the waterproof packing 4 is fitted to the base hood 2, the waterproof packing 4 is hardly deteriorated. FIG. 6 shows a main part of another embodiment.
As is clear from the cross-sectional shape of the waterproof packing 4 shown in (a), a convex portion 43, a flange portion 44 connected to the rear end of the convex portion 43, and a rear end of the flange portion 44 are connected. And an insertion portion 45 provided. The waterproof packing 4 is used for a waterproof connector having the same configuration as that of the first embodiment. When the waterproof cap is fitted to the opening, the tip surface of the projection 43 presses against the base hood, and the waterproof cap is When fitted to the fitting portion, one surface of the flange portion 44 comes into pressure contact with the fitting portion. The waterproof packing 4 shown in FIG.
The structure is substantially the same as the waterproof packing 4 shown in FIG.
3 and a flange portion 44 connected to the rear end of the convex portion 43.
And an insertion portion 45 connected to the rear end of the flange portion 44.
And the length of the protrusion 43 is shorter than that of the waterproof packing 4 shown in FIG. This waterproof packing 4 is also used for a waterproof connector having the same configuration as that of the first embodiment. When the waterproof cap is fitted to the opening, the tip surface of the projection 43 presses against the base hood, and the waterproof cap is When fitted to the fitting portion, one surface of the flange portion 44 comes into pressure contact with the fitting portion. The waterproof packing 4 shown in FIG. 6C has a substantially L-shaped cross section, and has a convex portion 46 and a flange portion 47 connected to the rear end of the convex portion 46. I have. This waterproof packing 4 is also used for a waterproof connector having the same configuration as that of the first embodiment, and is adhered to a mounting surface of a mounting portion formed on an inner surface of the waterproof cap, and the waterproof cap is fitted to the opening. When the waterproof cap is fitted to the fitting portion, one end surface of the flange portion 47 is brought into pressure contact with the fitting portion. According to the waterproof connector of the present invention, the pressure contact surface of the waterproof packing with respect to the base hood is different between waterproof and non-waterproof when compared with the conventional waterproof connector.
The waterproof packing is durable, reliable and can be used for a long time, and is therefore economical.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 shows a waterproof connector according to a first embodiment of the present invention, wherein (a) is a longitudinal sectional view, and (b) is a sectional view taken along line bb of (a). is there. FIG. 2 shows a main part of the waterproof connector shown in FIG. 1;
2 is an enlarged view of a portion A in FIG. 1, and FIG. 2B is an enlarged view of a portion B in FIG. 3A and 3B show a waterproof packing of the waterproof connector shown in FIG. 1, wherein FIG. 3A is a perspective view with a part cut away, and FIG. 3B is an enlarged view of a portion C in FIG. FIG. 4 is a front view of the waterproof connector shown in FIG. 1; 5A and 5B show the waterproof connector shown in FIG. 1, wherein FIG. 5A is a perspective view of the waterproof connector in a waterproof state, and FIG. 5B is a perspective view of the waterproof connector in a non-waterproof state. 6A and 6B show a main part of another embodiment, wherein FIG. 6A is a sectional view of a waterproof packing according to a second embodiment, FIG. 6B is a sectional view of a waterproof packing according to a third embodiment, and FIG. 4th
It is sectional drawing of the waterproof packing in embodiment. [Description of Signs] 1 Waterproof connector 2 Base hood 3 Waterproof cap 4 Waterproof packing 5 Connector 20 Opening 21 Flange surface 22 Fitting part 40 Wedge-shaped part 41 Flange part 42 Insertion part

Claims (1)

(57) Claims 1. A base hood having an opening for connecting a connector, and a base hood movably attached to the base hood to cover the opening and to provide a predetermined portion other than the opening. A waterproof cap fitted to the base hood at a portion thereof, attached to the waterproof cap, interposed in a compressed state between the waterproof cap and the base hood, and sealing the opening in a watertight state. In a waterproof connector including a waterproof packing, a surface of the waterproof packing that presses against the base hood is different between when the waterproof cap covers the opening and when the waterproof cap is fitted to the predetermined portion. A waterproof connector characterized by the following.