JPH0216527Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a water seal plug for a waterproof connector that is inserted into an unused terminal insertion hole of the waterproof connector to ensure waterproofness.

[Prior Art] In a waterproof connector, in order to prevent water from entering from the outside, a sealing material is attached to each lead wire of an inserted connecting terminal to form a prevention structure. However, when using a multi-pole connector, there is no problem if it is fully wired, but if there is a connection terminal that is not used and that connection terminal is omitted, water may enter the interior from that part. Therefore, all unnecessary connection terminals must be incorporated into the housing.

[Object of the invention] An object of the invention is to eliminate the above-mentioned drawbacks, to provide an economically advantageous water seal plug for a waterproof connector that can be used in place of unnecessary connection terminals.

[Summary of the invention] The gist of the invention to achieve the above objectives is as follows:
A plug to be inserted into a connection terminal insertion hole of a waterproof connector housing, the insertion body made of synthetic resin has a locking part at the leading end that engages with a locking strip of the housing, and a soft plug at the rear end. This is a water-sealed plug for waterproof connectors, which is characterized by having a sealing material surrounding it.

[Embodiments of the invention] The invention will be described in detail based on illustrated embodiments.

FIG. 1 is a plan view of a water seal plug 1 according to the present invention;
FIG. 2 is a front view, and FIG. 3 is a longitudinal sectional view. This water seal plug 1 is composed of an insert body 2 made of synthetic resin and a sealing material 3 for closing the insertion hole of the housing. A locking portion 4 that engages with a locking strip of a housing, which will be described later, is provided at the tip of the insert 2, and a soft sealing material 3 is attached to the rear portion. The width and height of the inserter 2 are approximately the same as the connection terminal to be inserted, and the locking portion 4 is provided as a step at the tip. The outer shape of the sealing material 3 is a wave-shaped cross section, and the sealing material 3 is inserted from the front of the inserter 2 and is tightly fitted around the narrow diameter portion 5 at the rear end, and is prevented from falling out by a stopper 6 at the end. There is.

When using this water seal plug 1, the fourth
As shown in the figure, the housing 10 is inserted from the rear, and the housing 10 has elastic locking strips 12 formed diagonally forward for each connection terminal insertion hole 11. When the water seal plug 1 is inserted into the insertion hole 11 as shown in FIG. It acts like there is no such thing. Moreover, the sealing material 3 is
It comes into close contact with the inner wall of the insertion hole 11 of No. 0, and acts to prevent water from entering from this part.

When the water seal plug 1 is attached to the housing 10, even if a connection terminal is attached to the connector housing of the other party, the tip of the water seal plug 1 cannot touch the connection terminal of the other party. Although the insert body 2 is made of synthetic resin, which is an insulator, there is no problem even if the insert body 2 lightly contacts the other party. Of course, it is also possible to similarly insert the same water seal plug 1 into the corresponding connection terminal position of the mating connector housing 10.

[Effects of the Invention] As explained above, the water seal plug for a waterproof connector according to the present invention can omit unnecessary connection terminals and wiring by inserting it into an unused terminal hole of a waterproof connector housing.

[Brief explanation of the drawing]

The drawings show an embodiment of the water seal plug for a waterproof connector according to the present invention, in which Fig. 1 is a plan view thereof, Fig. 2 is a front view, Fig. 3 is a longitudinal cross-sectional view, and Fig. 4 is a case in which it is inserted into a housing. FIG. 5 is a cross-sectional view of the device inserted into the housing. 1 is a water seal plug, 2 is an insert body, 3 is a sealing material, 4 is a locking part, 5 is a small diameter part, 6 is a stopper, 1
0 is a housing, 11 is an insertion hole, and 12 is a locking strip.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. A plug to be inserted into a connection terminal insertion hole of a waterproof connector housing, which has a locking member that engages with a locking strip of the housing at the tip of a synthetic resin insert. A water-sealed plug for a waterproof connector, characterized by having a rear end portion and a soft sealing material wrapped around the rear end portion. 2. The water seal for water connectors according to claim 1, wherein the length of the insert body is such that it does not come into contact with the mating connection terminal or the insert body when the housings are fitted together. plug.