JPH039264Y2 - - Google Patents

Description

[Detailed description of the invention] "Field of industrial application" The invention relates to a waterproof connector, and more specifically, the invention relates to the insertion of a waterproof seal ring into the joint part of a male and female connector housing in a waterproof connector. It's about structure.

"Prior Art" There are many known examples of the waterproof seal ring insertion structure in the waterproof connector described above. and,
Among these, there is an insertion structure shown in FIG. 8 that has excellent waterproof performance, has a simple structure, and has good insertion properties for a waterproof seal ring (hereinafter simply referred to as a seal ring).

That is, when inserting the seal ring 3 into the joint portion of the male connector housing 1 and the female connector housing 2, the locking protrusion 5 is provided on the outer periphery of the rear end of the seal ring 3, and the locking protrusion 5 is provided on the outer circumference of the rear end of the seal ring 3. is provided with a locking window 6 for receiving the locking protrusion 5, and the seal ring 3 is attached to the female connector housing 2 by engaging the locking protrusion 5 and the locking window 6.
There is a structure that can be inserted into. Note that 4 in the figure is an annular protrusion for sealing provided on the inner and outer peripheries of the seal ring 3.

"Problems to be Solved by the Invention" According to the above-described conventional insertion structure, when the male connector housing 1 is pulled out and the connection is separated, the sliding force between the peripheral wall of the male connector housing 1 and the seal ring 3 is As a result, the front edge 9 of the seal ring 3 may be turned over in the direction indicated by the arrow in the figure, and the seal ring 3 may be inverted. In particular, as connectors have become smaller in recent years, the seal ring 3 has become thinner, making it more likely that the defective phenomenon described above will occur.

The object of the present invention is to provide a novel insertion structure that overcomes the above-mentioned conventional difficulties.

``Means for Solving the Problems'' This invention achieves the above objectives by ``inserting a seal ring into the joint between the female connector housing and the male connector housing, and having a locking protrusion on the outer periphery of the seal ring. In the waterproof connector, the peripheral wall of the female connector housing is provided with a locking window portion that engages with the locking protrusion, and the peripheral wall of the female connector housing is provided with a locking window portion facing the seal ring. The seal ring has a structure in which an insertion groove is opened, receives the front edge of the seal ring, supports the inside of the seal ring, and is inserted into the groove.

"Examples" and "Operations" A detailed explanation will be given below with reference to Examples. In FIGS. 1 and 2 showing one embodiment, the waterproof connector of the present invention has a seal ring 3 having a rectangular cross section with rounded corners inserted into a joint between a male connector housing 1 and a female connector housing 2. The annular protrusions 4 provided on the inner and outer circumferences of the seal ring 3 are pressed against the circumferential walls of the male and female connector housings 1 and 2 for waterproofing, and a pair of locking protrusions are provided on the outer circumference of the rear edge of the seal ring 3. 5 is provided on the peripheral wall of the female connector housing 2, and a locking protrusion 5 of the seal ring 3 is provided on the peripheral wall of the female connector housing 2.
A locking window portion 6 is formed to receive and fit the
The locking protrusion 5 and the locking window 6 are engaged with each other to lock the insertion position of the seal ring 3.

In the above waterproof connector, seal ring 3
The peripheral wall of the fitting recess 7 of the female connector housing 2 that receives the male connector housing 1 has an opening toward the front edge 9 of the seal ring 3 to be inserted, and a portion of the front edge 9 is inserted into the fitting recess 7 of the female connector housing 2. There is an annular insertion groove 8 provided around the periphery.

That is, the insertion groove 8 is used for the inserted seal ring 3.
It is formed in a groove shape to support and receive the inner side of the front edge 9 of.

According to the waterproof connector configured above, the front edge 9 of the seal ring 3 is inserted into the insertion groove 8, and the inner part of the front edge 9 is supported and held. When the connection is released, the seal ring 3, which is in pressure contact with the peripheral wall of the male connector housing 1 via the annular protrusion 4, turns the front edge 9 inward due to the sliding force caused by its removal. Even if the seal ring 3 receives an external force that causes the seal ring to be displaced, the external force is borne by the insertion groove 8, so that the seal ring 3 is stably held without losing its posture.

Note that the above configuration of the present invention can be applied not only to the seal ring having a rounded corner rectangular cross section as in the above embodiment, but also to other seal rings having a circular or elliptical cross section, although not shown.

"Effects of the Invention" As described above, the waterproof connector of the present invention has the effect of stabilizing the insertion posture of the seal ring and maintaining smooth waterproof performance.

[Brief explanation of drawings]

Figure 1: A perspective view showing a waterproof connector according to an embodiment of the present invention, Figure 2: A front cross-sectional view showing how the seal ring of the embodiment shown in Figure 1 is inserted, Figure 3: A waterproof connector with a conventional structure. Perspective view Main symbols: 1: Male connector housing, 2:
Female connector housing, 3: Seal ring,
5: Locking protrusion, 6: Locking window, 7: Fitting recess,
8: Insertion groove, 9: Front edge of seal ring.

Claims (1)

[Scope of utility model registration request] A seal ring is inserted into the joint between the female connector housing and the male connector housing, a locking protrusion is formed on the outer periphery of the seal ring, and the locking protrusion and the locking protrusion are formed on the peripheral wall of the female connector housing. In a waterproof connector provided with a locking window portion to be engaged, a peripheral wall of the female connector housing includes:
A waterproof connector characterized by a structure in which an insertion groove is opened toward the seal ring, receives the front edge of the seal ring, supports the inner side, and is inserted.