JPH08315909A - Connector - Google Patents

Abstract

PURPOSE: To prevent the appearance of an excessive engaging force due to the warpage of resin. CONSTITUTION: A rib type of projection 13 is formed on the inner surface of an outer cylinder 11b as the hood section of a female connector toward a deeper position. Then, the cylinder of a male connector, when gradually inserted in the cylinder 11b, come in contact therewith via the projection 13 formed at the opposed position thereof. The occurrence of planar contact is thereby prevented and an engaging force can be reduced.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to a connector.

[0002]

2. Description of the Related Art Conventionally, as shown in FIGS.
As shown in FIG. 1, the other connector housing 3 is inserted into the hood portion 2 formed on the one connector housing 1. Therefore, the inner peripheral surface of the hood portion 2 and the outer peripheral surface of the connector housing 3 are substantially similar to each other,
A clearance C is set between the two in consideration of the desorption flights.

[0003]

The above-described conventional connector has the following problems. Since both connector housings 1 and 3 are made of resin, warpage occurs. If the hood portion 2 extends along the inner side, the connector housing 3 is inserted while slidingly contacting the inner peripheral surface of the hood portion 2, resulting in a high fitting force. That is, due to the warp, the surfaces come into sliding contact with each other,
There is a problem that the fitting force may become high.

The present invention has been made in view of the above problems, and an object thereof is to provide a connector capable of preventing the fitting force from increasing due to the warp of resin.

[0005]

In order to achieve the above object, the invention according to claim 1 is a connector in which a hood portion formed in one connector housing is inserted and fitted in the other connector housing, It is configured such that a protrusion having a thin tip is formed on the facing surface in the hood portion. Here, the protrusion may be formed on any connector housing side.

According to a second aspect of the invention, in the connector according to the first aspect, the protrusion is formed in a streak shape. Further, the invention according to claim 3 is the connector according to claim 1 or claim 2, wherein the projection is formed up to the tip of the connector housing, and a taper surface connected to a wall surface of the connector housing is provided on an end surface thereof. Has been formed.

[0007]

In the invention according to claim 1 configured as described above, a protrusion having a thin tip is formed on the facing surface in the hood portion, and when a mating connector housing is inserted into the hood portion. In addition, the two connector housings come into contact with each other at the protrusion, and the surfaces do not come into contact with each other.

Further, in the invention according to claim 2 configured as described above, the protrusion is formed in a streak shape, and the resin molding die is formed without using a slide die.
Further, in the invention according to claim 3 configured as described above, the projection is formed from the tip of the connector housing, and the end surface thereof is a tapered surface connected to the wall surface of the connector housing. If the connector housing is guided along the taper surface formed on the wall surface of the connector housing, it will also ride on the protrusion itself.

[0009]

As described above, the present invention can provide a connector in which the connector housings are not in contact with each other at their surfaces and the fitting force can be reduced.
Further, according to the invention of claim 2, the formation becomes easy by forming the protrusions in a streak shape. Further, according to the invention of claim 3, the tapered surface for inserting the connector housing is formed as an end surface that is continuous with the tapered surface, thereby making it easy to climb onto the protrusion.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an exploded perspective view showing a female connector in a connector according to an embodiment of the present invention, and FIG. 2 is an exploded perspective view showing a male connector. The female side connector 10 and the male side connector 20 shown in this embodiment are both of a waterproof type, and are provided with front type retainers 12 and 22 which are attached to the housings 11 and 21 from the fitting surface side, respectively.

In the figure, the housing 11 of the female connector 10 is formed in a double cylinder shape, and a plurality of female terminal fittings for accommodating female terminal fittings (not shown) are housed in the inner cylindrical portion 11a. A chamber 11a1 is formed, and an outer cylinder portion 11b is formed so as to surround the inner cylinder portion 11a from the outside. Although not shown, a ring-shaped rubber seal is attached to the outer peripheral surface on the inner side of the inner cylindrical portion 11a. On the other hand, the housing 21 of the male side connector 20 is provided with a tubular portion 21a that encloses a male side terminal fitting (not shown), and the tubular portion 21a can be inserted between the inner tubular portion 11a and the outer tubular portion 11b. Has become. A rubber seal is interposed between the tubular portion 21a and the inner tubular portion 11a at the time of insertion to form a watertight surface.

As described above, since the female side connector 10 is formed in a double cylindrical shape and the male side connector 20 is formed in a cylindrical shape, both sides are formed in a hood shape and the other side connector is formed. The housing is being inserted.
However, since a rubber seal is interposed between the inner tubular portion 11a and the tubular portion 21a, a fitting force is not generated on the opposing surfaces thereof, and the outer tubular portion 11b and the tubular portion 21a face each other. Face matters.

In this embodiment, the outer cylinder portion 11b of the female connector 10 constitutes a hood portion, and the outer cylinder portion 11b forms a protrusion on the surface facing the hood portion and the cylinder portion 21a of the male connector 20. A line-shaped protrusion 13 parallel to the fitting direction is formed on the inner peripheral surface of the portion 11b. The protrusions 13 are formed in two places on each of the upper side and the lower side of the outer cylindrical portion 11b, that is, four places in total, and are tapered toward the top. In the present embodiment, the protrusions 13 are formed at the above-mentioned four places, but the forming places are free. However, it is effective to form it in a place where it is easily warped. Further, since it may be formed on the facing surface in the hood portion, it need not be formed on the outer cylinder portion 11b side, and may be formed on the outer peripheral surface of the cylinder portion 21a. However, since the outer peripheral surface of the tubular portion 21a is exposed to the outside, there is a possibility that it will come into contact with foreign matter and be crushed, so such a situation can be prevented by forming it inside the outer tubular portion 11b. Further, although it is not always necessary to make it streaky, since the mold structure becomes complicated for forming it in a dot shape, it is easier to make it streaky.

FIG. 3 is a perspective view schematically showing the formation state of the protrusions 13, and FIG. 4 is a sectional view of the outer cylinder portion 11b. As shown in the figure, the tip of the protrusion 13 is formed from the tip of the outer cylindrical portion 11b of the housing 11, and the end surface is formed continuously from the tapered surface formed on the wall surface of the outer cylindrical portion 11b. With this configuration, when the tube portion 21a of the male connector 20 is inserted into the outer tube portion 11b, the tip of the tube portion 21a is guided along the tapered surface of the end surface of the outer tube portion 11b. While naturally protruding 13
The end face of the car will be guided and you will be able to get on.

In this embodiment, the end surface of the projection 13 and the cross section of the outer cylindrical portion 11b, which is the hood portion, are continuous taper surfaces, but they do not necessarily have to be continuous taper surfaces. However, if the taper surface is continuous, the apparent taper surface for leading to the protrusion 13 becomes long, and the insertion is easy. In addition, the clearance can be set to "0" by performing such guidance. When the clearance becomes "0", there is no rattling, and for example, even when the hood portion is short, there is no wobbling at the fitting portion.

A lock arm 14 for locking a lock projection 24 formed on the upper surface of the cylindrical portion 21a of the male connector 20 is formed on the upper side portion of the outer cylindrical portion 11b of the female connector 10, and the female connector is formed. In the inner peripheral side of the side wall surface of the outer tubular portion 11b in FIG.
a-shaped guide ribs 25, 25 formed on the outer periphery of both side surfaces of a
A guide groove 15 for inserting and guiding is formed. Also, these guide ribs 25, 25 and the guide groove 1
5 and 15 are formed symmetrically, a reverse insertion preventing rib 26 and a reverse insertion preventing groove 16 are formed on the lower sides of the outer cylindrical portion 11b and the cylindrical portion 21a, respectively, at positions facing each other. Since the corresponding one is not formed on the upper side, the reverse insertion preventing rib 26 abuts against the end surface of the outer cylindrical portion 11b so that the rib cannot be inserted when it is inserted upside down.

In order to prevent reverse insertion, in addition to the ribs and grooves as shown in this embodiment, for example, as shown in FIGS. 5 and 6, the housings 31, 41 are vertically asymmetrical. You can leave it. Next, the operation of this embodiment having the above configuration will be described. Retainers 12, 22, rubber seals, terminal fittings, etc. are attached to the female connector 10 and the male connector 20, respectively, and the tubular portions 21a of the male connector 20 are made to face each other so as to face each other. Insert inside the.

For example, if the outer tubular portion 11b is inwardly warped, the outer tubular portion 11b has a smaller opening diameter, so that the tip of the tubular portion 21a spreads the tip of the outer tubular portion 11b. Will be inserted. That is, the outer cylinder portion 11b
It comes into contact with the tapered surface of the tip of the guide and is guided inward, and further spreads the outer cylindrical portion 11b. Then, while being inserted inward along the tapered surface, it also naturally climbs up to the end surface of the projection 13, and the tubular portion 21a is inserted all the way into contact with the tip of the projection 13 in the outer tubular portion 11b. Tube 2
Since 1a is in contact with the tip of the protrusion 13, the contact area is small and the fitting force is low.

The male side connector 20 is the female side connector 1.
When the guide ribs 25, 2 are inserted into
5 and the reverse insertion preventing rib 26 are inserted into the guide grooves 15 and 15 and the reverse insertion preventing groove 16 and guided. Further, when inserted all the way, the lock arm 14 engages with the lock protrusion 24 to prevent the lock arm 14 from coming off. As described above, the outer cylindrical portion 11b serving as the hood portion of the female connector 10 is formed with the streak-like protrusion 13 toward the inner side, and the male connector 2
When the cylindrical portion 21a of 0 is inserted into the outer cylindrical portion 11b, the cylindrical portion 21a and the outer cylindrical portion 21b come into contact with each other via the protrusions 13 formed on the opposing surfaces of the both, so that they are not in surface contact with each other and the fitting force can be lowered. it can.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a female connector in a connector according to an embodiment of the present invention.

FIG. 2 is an exploded perspective view of a male side connector paired with the female side connector.

FIG. 3 is a schematic perspective view of an open end of the female connector.

FIG. 4 is a schematic sectional view of an open end of the female connector.

FIG. 5 is a schematic front view of a female connector in a connector according to a modification.

FIG. 6 is a schematic front view of a male side connector paired with the female side connector.

FIG. 7 is a schematic front view of a female connector in a conventional connector.

FIG. 8 is a schematic front view of a male side connector paired with the female side connector.

FIG. 9 is a schematic cross-sectional view of a fitted state of the connector.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... Female side connector 11 ... Housing 11b ... Outer cylinder part 13 ... Protrusion 20 ... Male side connector 21 ... Housing 21a ... Cylinder part

Front page continuation (72) Inventor Kiyofumi Ichida 1-14 Nishisuehiro-cho, Yokkaichi-shi, Mie Sumitomo Wiring Systems, Ltd.

Claims (3)

[Claims] 1. A connector in which a hood portion formed on one connector housing is inserted into the other connector housing to be fitted therein, and a projection having a thin tip is formed on a facing surface in the hood portion. And connector. 2. The connector according to claim 1, wherein the protrusion is formed in a streak shape. 3. The connector according to claim 1 or 2, wherein the projection is formed up to the tip of the connector housing, and a taper surface connected to the wall surface of the connector housing is formed on the end surface thereof. A connector characterized by that.