JP2515978Y2 - IDC joint connector - Google Patents

Description

[Detailed Description of the Invention] "Industrial field of application" The present invention relates to a pressure welding joint connector which is mounted in the middle of a wire group such as a wire harness and is used to connect and conduct between the electric wires by a housed pressure welding terminal. More specifically, the present invention relates to a waterproof structure of the pressure-welded joint connector.

"Prior Art" Since a press-connecting joint connector or a press-connecting connector using a press-connecting terminal has an upper opening for press-fitting and connecting an electric wire from above the press-connecting terminal housed in a terminal accommodating chamber, and a wire hole for pulling out the press-connected wire. Although waterproof measures are difficult and few publicly known examples, there is a proposal of a waterproof structure for a pressure contact connector in Japanese Utility Model Laid-Open No. 2-73073.

That is, in this known device, a cover for covering the opening of the press-connecting connector is provided, and a seal portion for watertightly closing the upper opening and a wire insertion portion with a slit for closing the wire insertion portion are provided on the cover. Providing a seal part with holes,
The cover is covered so that the inside of the connector is waterproof.

"Problems to be solved by the invention" When the above-mentioned waterproofing means of the pressure contact connector is applied to the pressure contact joint connector, a cover having a seal portion with a complicated structure is required, which increases cost and covers the cover. When you do, attach the wire that has been pressure-connected to the pressure-contact terminal beforehand.
Since it is press-fitted into the wire insertion hole of the cover, a joint connector having a large cover covering resistance and a large number of press-contact terminals requires a plurality of processing steps for press-fitting the wires and covering the cover, and a press-fitting device. Therefore, there is a problem that the workability of assembling the pressure welding joint connector is poor and the assembly cost is high.

On the other hand, since the pressure contact terminal has excellent electric wire connectivity by pressing the wire group together, there is a tendency that pressure contact connectors and pressure contact joint connectors are widely used in automobile wire harnesses.
There is a demand for the development of a simple and useful waterproof structure applied to these.

The present invention eliminates the drawbacks of the above conventional means,
An object of the present invention is to provide a pressure welding joint connector that meets the development demands in the field.

[Means for Solving the Problems] The press-connecting joint connector of the present invention which solves the above technical problems is described in "The press-connecting terminal accommodating portion erected in the central portion accommodates the press-connecting terminal with the press-connecting slot facing upward. A connector main body and a cover body that covers and locks the connector main body, wherein a peripheral edge of the connector body is an outer bank portion and a filler moat portion surrounding the pressure contact terminal accommodating portion. , A waterproof projection frame provided on the lower side of the cover body, which is closed at the upper side and the lateral side and opened at the lower side, and the upper end of the outer bank portion is pressure-bonded to the pressure-contact terminal in the pressure-contact terminal accommodating portion and the wire. In addition to being formed lower than the point, the waterproof protrusion frame rushes into the filler injected into the filler moat portion in the covering locking posture of the cover body, and the electric wire is U-shaped in the filler moat portion. Submerged shape It has a structure "with.

"Operation" In the pressure contact joint connector of the present invention having the above configuration, the filler moat portion surrounding the terminal accommodating portion is provided to inject the filler, and the filler is applied to the upper side and the lateral side of the cover body side. The closed waterproof protrusion frame is inserted, and the electric wire that is pressed against the pressure contact terminal and extends outside the connector is sunk in a U shape in the filler moat by the waterproof protrusion frame. It is isolated from the outside by the projecting frame, ensuring sufficient waterproofness.

Further, since the outer wall portion of the filler moat portion and the pressure contact point of the pressure contact terminal have the above-mentioned shape requirements, there is no possibility that the injected filler will infiltrate into the pressure contact point and impair the electrical conductivity.

The waterproof projection frame sinks the pressure-bonded electric wire into the filler moat portion at the same time when the electric wire is pressed and connected by covering and locking the cover body, so that the structure and assemblability of the connector are simplified as a waterproof measure.

"Example" Hereinafter, a detailed description will be given based on examples. Referring to FIG. 1 showing an embodiment of the present invention, a group of pressure contact terminal accommodating portions 2 (hereinafter, referred to as terminal accommodating portions 2) are arranged side by side in a central portion of a connector body 1 having an open upper portion. The pressure contact terminal 3 with the pressure contact slot 4 facing upward is accommodated in the terminal accommodating portion 2, and the cover body 5 is pressed against the connector body 1 from above, and the electric wire 6 laid on the pressure contact terminal 3 is pressure contacted. In a pressure welding joint connector, which is pressure-contact connected to the terminal 3 and whose cover body 5 is covered and locked to the connector body 1, the peripheral edge of the connector body 1 is attached to the connector body 1 and the outer wall portion 7 is provided.
And a filler moat portion 9 surrounding the terminal accommodating portion 2 group.
At the bottom of the cover body 5 (on the side facing the connector body 1 in the covering posture), a waterproof projection frame in which a plate-like wall surrounds the frame to open the lower side and closes the upper and side edges is formed. 10 are projected.

The shape of the filler moat portion 9 of the connector body 1 is such that the upper end of the outer bank portion 7 is lower than the pressure contact point 11 (the pressure contact slot 4 and the wire 6 pressure contact portion) of the pressure contact terminal 3 accommodated in the terminal accommodating portion 2. The "requirement" is satisfied, and when the filler 8 is injected into the filler moat portion 9, the upper surface of the filler 8 is always located below the pressure contact point 11.

In addition, the waterproof projection frame 10 of the cover body 5 has the waterproof projection frame 10 in the covering and locking posture of the cover body 5 to the connector body 1.
Rushes into the filling material 8 injected into the filling material moat portion 9 and is bent by a U-shape to fill the electric wire 6 which is pressed against the pressure contact terminal 3 of the terminal accommodating portion 2 and extends straight above the filling material moat portion 9. The shape requirement for sinking into the agent moat portion 9 is satisfied.

Then, referring to FIGS. 1C and 1D, the terminal accommodating portion 2 is previously prepared.
The pressure contact terminal 3 is mounted and housed on the pressure contact terminal 3, the electric wire 6 is laid on the pressure contact terminal 3, and the silicone moist
A filler 8 such as an adhesive is injected, and then the cover body 5 is pressed onto the connector body 1 to press-connect and connect the electric wire 6 to the pressure contact terminal 3, and at the same time, the waterproof protrusion frame 10 is used to remove the filler moat 9 The electric wire 6 lying above is bent downward to form a U-shaped portion 15, and the U-shaped portion 15 is submerged in the filler 8 to waterproof the inside of the connector.

The cover body 5 is fitted to the inside of the upper end of the outer bank portion 7 of the filler moat portion 9 when the cover body 5 is covered and locked to the connector body 1, and prevents the filler 8 from flowing out.
Twelve are projected laterally. The electric wire 6 submerged in the filler moat portion 9 is sandwiched between the inside of the outer bank portion 7 and the semicircular electric wire clamping hole 13 formed in the outflow prevention plate 12, and the outer bank portion 7 and the outflow prevention plate The gap between 12 is prevented. Also, in the figure
Reference numeral 14 is a press-fitting corner for press-fitting the electric wire 6 into the press-fitting slot 4.

In addition, the filler 8 has electrical insulation and waterproofness, is sufficient to sink the electric wire 6 into a U shape, and has an appropriate viscosity / difficult flow that does not easily flow out when the connector body 1 tilts or falls. Silicone, Grease, Adhesive
A curable resin or the like is used. Then, the filler 8 is injected in anticipation of an increase in volume due to the sinking of the electric wire 6, prevents the overflow due to the covering and locking of the cover body 5, and fills the filler moat portion 9 as deeply as possible. To be done.

The press-joint connector of the above-described embodiment has the above-described function to ensure the waterproof property inside the connector,
The pressure contact connection of the wire by the pressure contact terminal is excellent and stable.

The outflow prevention plate 13 of the above embodiment is not essential and can be omitted.

"Effects of the Invention" As described above, the pressure-welded joint connector of the present invention ensures sufficient waterproofness, maintains good pressure-welding connection performance of electric wires, and has various performances such as those of the filler moat. Since it is achieved by a simple structure with a waterproof projection frame and a simple process of filling the filler and covering the cover body, it prevents the cost increase and the connector assemblability deterioration due to the complexity of the structure for waterproof measures and the increase of parts. It is possible to provide a waterproof pressure welding joint connector having the same level of cost and assembling as the non-waterproof pressure welding joint connector.

[Brief description of drawings]

FIG. 1 shows a press-connecting joint connector according to an embodiment of the present invention, (A) is a perspective view of the cover body before covering, (B) is a perspective view of the underside of the cover body, and (C). Is a cross-sectional view showing a covering procedure and a covering process of the cover body, (D) is a perspective view after covering the cover body, main symbols, 1: connector body, 2: crimp terminal accommodating portion, 3: crimp contact Terminal, 4: Pressure welding slot, 5: Cover body, 6: Electric wire, 7: Outer bank, 8: Filler, 9: Filler moat, 10: Waterproof protruding frame, 11: Pressure welding point

Claims (1)

(57) [Scope of utility model registration request] 1. A press-connecting joint comprising a connector main body for accommodating a press-connecting terminal with a press-connecting slot facing upward in a press-connecting terminal accommodating portion provided upright in a central portion, and a cover body covering and locking the connector main body. In the connector, a peripheral edge of the connector body is formed as an outer bank portion, and a filler moat portion surrounding the pressure contact terminal accommodating portion and a lower portion of the cover body, which is closed on the upper side and the lateral side, An open waterproof protrusion frame is provided so that the upper end of the outer bank portion is formed lower than the pressure contact point between the pressure contact terminal and the electric wire in the pressure contact terminal accommodating portion, and the waterproof protrusion frame covers and holds the cover body. 3. The pressure welding joint connector according to claim 1, which has a structure having a shape that rushes into the filler injected into the filler moat portion and sinks the electric wire into the filler moat portion into a U-shape.