JPH0419742Y2 - - Google Patents

Description

[Detailed description of the invention] "Industrial field of application" The invention forms a tower that fits into the fitting recess of the male connector upright on the bottom of the male connector fitting hole.
The present invention relates to a waterproof female connector in which a closed annular seal ring externally fitted on the tower is pressed into contact with the inner periphery of a fitting recess of a male connector, thereby making the inside of a fitted male and female connector waterproof.

``Prior art'' A waterproof female connector equipped with a seal ring is equipped with a locking means for the seal ring to prevent the seal ring from coming off when the mated male and female connectors are removed. There are many known examples such as Publication No. 60886. That is, this known example can be categorized as follows: - A structure in which a separate ring holder made of resin with a locking piece is inserted and locked from the rear of the attached seal ring;
A structure in which the ring retainer, which is a resin ring inserted from the rear of the installed seal ring, is welded to the connector peripheral wall. -A seal ring with a hook-shaped lock portion at the front end is installed, and this lock portion is inserted into the lock hole on the connector side. There is a locking structure.

``Problem to be solved by the invention'' The above known examples commonly have complicated locking structures for the seal ring, and in addition, the insertion direction of the seal ring and ring retainer is restricted, and problems such as welding occur. Since special processing is required, the series of operations for attaching the seal ring and ring presser are complicated and time-consuming, making it difficult to automate this series of operations. The purpose of the present invention is to solve the above-mentioned difficulties of the prior art.

``Means for Solving the Problems'' The waterproof female connector of the present invention which solves the above technical problems has the following features: ``A tower that fits into the fitting recess of the male connector is formed upright on the bottom of the male connector fitting hole. A closed seal ring is attached to the outside of the tower.
In the waterproof female connector that presses against the circumferential surface of the fitting recess, the rear half of the tower near the bottom surface is a seal ring mounting part, the front half of the tower is a ring stopper mounting part, and the ring stopper mounting part includes: Attaching a ring stopper made of an elastic closed ring whose front end is joined to the rear end of the seal ring attached to the seal ring attachment part, and attaching the seal ring and the ring stopper,
The shape is symmetrical in the front and rear with respect to each center line perpendicular to the mounting direction on the tower, and further,
A ring stop consisting of a locking groove cut from the front end of the ring stop mounting part in the mounting direction of the ring stop, and a locking protrusion that is integrally formed with the ring stop and press-fitted into the locking groove. It is characterized by a structure with a mechanism.

And, as an aspect of the locking means configured as above,
The locking groove and the locking protrusion that fit into each other have a notched circular cross-sectional shape with an intermediate thickness that is thicker in the middle than the opening of the groove, and the locking protrusion that fits into the locking groove is It may prevent it from rising out of the groove.

"Function" The waterproof female connector of the present invention with the above configuration has a seal ring and a ring stopper formed symmetrically about the center of the front and back in the direction of insertion into the tower, sequentially attached to the front and rear parts of the tower. Because of this structure, there are no front or rear restrictions on the insertion direction of the seal ring and ring stopper, making it unnecessary to pay attention to the direction when inserting, improving installation workability, and eliminating the direction restriction. can be installed automatically.

Since the ring stopper has a locking mechanism consisting of the locking groove and the locking protrusion, the locking groove on the tower side functions as a guide rail and guides the locking protrusion of the ring stopper. It is easy to fit the locking protrusion into the locking groove, and it can be installed and locked on the tower by simply pushing the ring stopper lightly. Even if the ring stopper in the attached position is subjected to the pull-out force generated on the seal ring when the male connector is removed, the elastic locking protrusion forming the strip is press-fitted into the locking groove. Therefore, strong frictional resistance occurs on the mating surface,
This prevents the seal ring from coming off or shifting its position.

Furthermore, in the locking mechanism of the above-mentioned embodiment, which includes a locking groove having a medium thick cross-sectional shape and a locking protrusion, when the above-mentioned pulling out force is applied, the locking protrusion from the locking groove due to the pulling out force is removed. Since this prevents the locking member from lifting up, the locking action by the locking groove and the locking protrusion becomes even more effective. There are the above effects.

"Example" Hereinafter, a detailed explanation will be given based on an example. Referring to FIGS. 1 to 6 showing one embodiment, the waterproof female connector 1 of the present invention is as shown in FIGS. 1 and 2.
The fitting recess 2 of the male connector 20 accommodates the female terminal 3.
1 and a skirt portion 5 that surrounds the tower 4 with a space around the tower 4, and the space between the tower 4 and the skirt portion 5 is the fitting recess 21 of the male connector 20. A male connector fitting hole 12 is formed to receive a peripheral wall of the male connector.

That is, the tower 4 is formed protruding from the center of the bottom surface 13 of the male connector fitting hole 12, has a substantially rectangular prismatic cross section with rounded corners, and has a plurality of female terminals 3 in the axial direction of the prismatic body. Terminal accommodation hole 1 accommodated in parallel with
5. And male connector fitting hole 12
The rear half of the tower 4 near the bottom surface 13 becomes a seal ring mounting part 16 for externally mounting a seal ring 11, which will be described later.
The front half of the ring serves as a ring stopper mounting portion 17 into which a ring stopper 9, which will be described later, is externally fitted.

The tower 4 has a locking groove 8 having a slit-shaped opening 22 on the surface of the tower 4 and extending in a direction parallel to the axis of the tower 4, that is, in the direction in which the ring stopper 9 is inserted. From the front end of 4 to the end of the ring stopper attachment part 17, there are several threads (four threads are shown).
The cross-sectional shape of the locking groove 8 is a notched circular shape with a middle thickness that is wider at the middle than the opening 22.

On the other hand, for the seal ring 11, see FIGS. 3 and 4.
It forms a closed ring body that is externally fitted into the seal ring mounting part 16 of the tower 4, and the inner and outer peripheries are press-fitted to the circumferential surface of the fitting recess 21 of the male connector 20 that is fitted to the circumferential surface of the seal ring mounting part 16. A sealing strip 18 is provided around the periphery, and further, a sealing strip 18 is provided around the tower 4 in the mounting direction (insertion direction).
They are formed in a symmetrical shape with the center line 19 orthogonal to the center line 19 as an axis, and the first half and the second half in the mounting direction to the tower 4 are symmetrical with the same shape and size.

Further, the ring stopper 9 is an elastic closed body made of rubber that is fitted onto the ring stopper mounting portion 17 of the tower 4, as shown in FIGS.
Similarly, the locking protrusion 10 has a symmetrical shape with respect to the center line 19 that is perpendicular to the mounting direction to the tower 4, and is lightly press-fitted into the locking groove 8.
The locking protrusion 10 is integrally formed inside the closed ring body in parallel with the mounting direction to the tower 4, and has a medium-thick cross-sectional shape similar to the cross-sectional shape of the locking groove 8. ing.

The above-described locking groove 8 and locking protrusion 10 constitute a locking mechanism for the ring stopper 9, and the locking groove 8 and the locking protrusion 10 constitute a locking mechanism for the ring stopper 9, and the locking groove 8 and the locking protrusion 10 are connected to the locking mechanism on the tower 4 side following the seal ring 11 mounted on the seal ring mounting portion 16. When the ring stopper 9 is attached to the ring stopper attachment part 17 of the tower 4 while lightly pressing the locking protrusion 10 into the stopper groove 8, the rear end of the seal ring 11 and the front end of the ring stopper 9 are joined and set. The ring stopper 9, whose installed position is locked by the above-mentioned locking mechanism, functions as a stopper for the seal ring 11. In addition,
The ring stopper 9 is a natural dimensional condition that enables the fitting of the male and female connectors and the pressure sealing of the seal ring 11 to the inner periphery of the fitting recess 21 by the seal strip 18, and also satisfies its own stopper function.
The size condition of "outer diameter dimension of seal ring 11>outer diameter dimension of ring stopper 9>inner diameter dimension of seal ring" is satisfied. Note that 6 and 7 in the figure are a locking arm 7 and a locking protrusion 6 that lock the mating posture of the male and female connectors.

The above waterproof female connector 1 has a seal ring 11
When the tower 4 equipped with the ring stopper 9 is fitted into the fitting recess 21 of the male connector 20 and connected,
The seal strip 18 of the seal ring 11 fits into the fitting recess 21
The ring stopper 9 functions as a stopper for the seal ring 11, and when the male connector 20 is removed, the seal strip 18 that is in pressure contact with the fitting recess 21 is prevented from sliding. Even if an external force is generated on the seal ring 11 due to the contact, the ring stopper 9 exerts the above-mentioned action to prevent the seal ring 11 from coming off or losing its posture.

"Effect of the invention" As explained above, the waterproof female connector of the invention has a seal ring and a ring stopper that are symmetrical in the first half and the second half in the direction of attachment to the female connector, and a ring stopper that is fitted into each other. Since it features a ring locking mechanism consisting of a locking groove and a locking protrusion, there is no restriction on the direction in which the seal member is installed, making the installation process easier and faster, and automatic installation is possible. Become. The symmetrical and identical shapes of the sealing members facilitate cost reduction by simplifying the sealing member mold, and the entire waterproofing structure is simplified, making it possible to implement waterproofing measures for connectors easily and at low cost. effective.

[Brief explanation of drawings]

Figure 1: Front view of a waterproof female connector according to an embodiment of the present invention (front view without seal ring and ring stopper attached) Figure 2: Side sectional view of the female connector and male connector taken along the AA cross section of Figure 1 (Side sectional view with seal ring and ring stopper installed)
Figure 3: Front view of the seal ring of the waterproof female connector of the embodiment in Figure 1, Figure 4: BB sectional view of Figure 3,
FIG. 5: A front view of the ring stopper of the waterproof female connector of the embodiment in FIG. 1, and FIG. 6: A CC sectional view of FIG. 5. Main symbols: 1...Waterproof female connector, 2...Male terminal, 3...Female terminal, 4...Tower, 5...Skirt portion, 8...Latching groove, 9...Ring stop, 10...
... Locking protrusion, 11 ... Seal ring, 12 ... Male connector fitting hole, 13 ... Bottom surface of male connector fitting hole, 15 ... Terminal receiving hole, 16 ... Seal ring mounting part, 17 ... Ring stop attachment part, 18... Seal strip, 19... Center line, 20... Male connector,
21... Fitting recess, 22... Opening of locking groove.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A tower that fits into the fitting recess of the male connector is formed upright on the bottom of the male connector fitting hole, and a closed annular seal ring is fitted onto the tower and fitted onto the outside, In the waterproof female connector that presses against the circumferential surface of the fitting recess, the rear half of the tower near the bottom surface is a seal ring mounting part, the front half of the tower is a ring stopper mounting part, and the ring stopper mounting part includes: A ring stopper, which is an elastic closed ring body whose front end is joined to the rear end of the seal ring mounted on the seal ring mounting part, is mounted, and the seal ring and ring stop are fixed at their respective centers perpendicular to the mounting direction to the tower. It has a front-back symmetrical shape with the line as an axis, and further includes a locking groove cut from the front end of the ring stopper mounting part in the mounting direction of the ring stopper, and a locking groove formed integrally with the ring stopper and in the locking groove. A waterproof female connector characterized by a structure equipped with a ring locking mechanism consisting of a locking protrusion that is press-fitted. (2) The scope of the utility model registration claim consists of a ring locking mechanism in which the cross-sectional shape of the locking groove and locking protrusion that fit into each other is a circular notch with a medium thickness.
Waterproof female connector described in (1).