JP3358446B2 - connector - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connector loaded with a potting agent.

[0002]

2. Description of the Related Art For example, in a transmission section of a vehicle, a relay connector is attached to a transmission case in order to connect electric components disposed inside to an external device. Such a relay connector requires an oil-proof structure in order to prevent oil in the case from leaking to the outside. As one of the measures, a connector joint chamber is filled with a heat-resistant and oil-resistant potting agent (epoxy resin material or the like) so as to prevent oil from leaking from the insertion hole of the terminal in the connector housing due to a capillary phenomenon.

[0003]

However, the portion where the potting agent is loaded is located at the back of the connector connection chamber, and a plurality of terminals and anti-prying pieces are arranged in the connector connection chamber. For this reason, when the nozzle of the dispenser is shaken when the potting agent is injected, the dispenser sometimes touches the prying prevention piece or the terminal. For this reason, there is a concern that the potting agent adheres to the prying-preventing pieces and the terminals and adversely affects the contact between the male and female terminals and the fitting between the housings. The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a connector that can prevent a potting agent from adhering to an engagement portion with a mating connector, a terminal fitting, or the like.

[0004]

In order to achieve the above object, a connector according to a first aspect of the present invention has a connector having a potting agent injection section in a connector connection chamber in order to prevent leakage of liquid from an insertion portion of a terminal. Wherein a pry prevention unit is provided in the connector coupling chamber.
On the other hand, on the mating connector,
Acceptable insertion recesses are formed along the edges to further
A region inside the outer edge portion in the twist prevention portion
To the potting agent injection section along the depth direction
A void is formed so that they can communicate with each other.
It is characterized in that a guide portion for guiding the potting agent injection nozzle toward the potting agent injection section is formed.

[0005]

According to a second aspect of the present invention, there is provided the connector according to the first aspect , wherein a plurality of guide portions are provided on the twist prevention portion, and a potting agent injection nozzle is movable between the guide portions. It is characterized in that a passage is formed.

[0007]

According to the present invention [Operation and Effect of the Invention, when injecting a potting agent, potting agent injection nozzle,
The leading end is guided into the potting agent injection section by the guide section formed by the space in the anti-prying section .
Therefore, since the potting agent injection nozzle does not touch other portions, it is possible to prevent the potting agent from adhering to the terminal and the like. In addition, since the guide portion is formed at a portion other than the surface involved in fitting with the mating connector, even if the potting agent adheres to the guide portion when guiding the potting agent injection nozzle, the connection of the connector and It has no effect on terminal contact. Also, the guide part is a twist prevention part.
Because it is provided in the formation area using
Without providing a new guide part as a separate member,
The structure is available, so it is space efficient and cost effective.
Reduction can also be achieved.

[0008]

According to the second aspect of the present invention, since the plurality of guides are connected via the passage, once the potting agent injection nozzle is guided to the potting agent injection through the guides, the subsequent passages are provided. It may be moved to another guide unit via. Therefore, it is not necessary to insert and remove the potting agent injection nozzle with respect to each guide portion each time, so that the potting agent injection work efficiency can be improved. In addition, since the injection can be performed by moving the place, the injection depth of the potting agent can be made uniform.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of a connector according to the present invention will be described below with reference to FIGS. The connector according to the present embodiment is a relay connector for connecting an electrical component provided in a transmission case and an external device in a transmission section of a vehicle.
In FIG. 1, a connector housing 1 has a short columnar shape, and a rectangular cylindrical hood wall 3 is provided on both sides of a partition wall 2 provided at the center.
4 are arranged coaxially. The partition 2 is fitted into a mounting hole formed in a side wall of a transmission case (not shown) so that the hood walls 3 and 4 project inside and outside the case, respectively. A rubber ring mounting groove 5 is formed all around the outer peripheral surface of the partition 2, and a rubber O-ring 6 is fitted in a state where oil resistance between the rubber case and the transmission case is secured. .

The inside of the hood wall 3 which protrudes inside the transmission case is defined as a first connector connection chamber 7, and a female connector (not shown) connected to electric components provided in the transmission case. Is to be accommodated. The inside of the hood wall 4 which protrudes to the outside of the transmission case is a second connector coupling chamber 8, and a female connector 21 to be described later connected to an external device.
Is to be accommodated. On the other hand, the partition 2 has
A total of ten terminals 9 are inserted vertically in two rows, and both ends protrude into the first connector connection chamber 7 and the second connector connection chamber 8, respectively. The female connector 22 of each female connector 21 housed in the second connector coupling chamber 8 can be fitted.

By the way, the inside of the second connector coupling chamber 8 is as follows:
The inner part has a slightly smaller diameter than the distal end side, and forms a potting agent injection chamber 12 into which a potting agent is filled. Further, in the second connector connection chamber 8, between the terminals 9 arranged in the upper and lower two rows, a twist prevention portion for preventing a twist when the female connector 21 is fitted is arranged. In the embodiment of the present application, the pry prevention portion has a structure in which four pry prevention pieces 10 erected on the bottom surface of the connector coupling chamber 8 are arranged at an appropriate pitch. Each of the prying prevention pieces 10 is engaged with a prying prevention piece insertion recess 23 of the female connector 21 to be described later, thereby preventing prying at the time of connection between the two connectors.

There are a total of three voids between the prying prevention pieces 10 as shown in FIG. Each of these voids has a guide hole 1 for guiding the insertion of the potting agent injection nozzle 13.
It plays a role as one. Each guide hole 11 is formed by cutting out the opposing surface of each prying prevention piece 10 so as to form an arc surface from the tip end surface to the base, and forms a cylindrical shape between adjacent prying prevention pieces 10. A space is formed. More specifically,
The potting agent injection nozzle 13 is inserted into this cylindrical space.

As shown in FIG. 3, the female connector 21 accommodated in the second connector coupling chamber 8 has a housing accommodation chamber 24, in which a housing accommodation chamber 24 is provided.
The connecting portion 25 protrudes from the inner wall surface, leaving a space in which the hood wall 4 can be inserted. The coupling portion 25 is set to a size that can be accommodated in the second connector coupling chamber 8, and further includes a plurality of coupling portions 25 corresponding to the terminals 9 protruding into the second connector coupling chamber 8. Cavities are formed and female terminal fittings 22 are formed in each of the cavities.
(See FIG. 4). Each cavity has an insertion port 25a opened in the front end face of the coupling portion 25. When both connectors are coupled, the terminal 9 is fitted with the female terminal fitting 22 through the insertion port 25a. Further, the connecting portion 2
5 is formed with a torsion preventing piece insertion recess 23 which is cut out in a horizontally long rectangular shape corresponding to the torsion preventing piece 10. The torsion preventing piece insertion recess 23 is formed so that the respective torsion preventing pieces 10 can be fitted together and along their outer edges.

A lock piece insertion portion 14 is formed on the upper surface of the hood wall 4, and a locking claw 1 is provided above the insertion opening.
5 are formed. On the other hand, in the female connector 21, a lock piece 26 is disposed above the housing accommodating chamber 24 so as to be flexibly deformable. And when both connectors are joined,
The lock piece 26 is inserted into the lock piece insertion portion 14 and locked by the locking claw 15, so that both connectors are held in a coupled state.

Next, an operation of injecting a potting agent will be described. This operation is performed after the terminal 9 is inserted into the partition 2 to prevent oil in the transmission case from leaking from the inserted portion due to a capillary phenomenon. First, the potting agent injection nozzle 13 of the dispenser is taken out and inserted into the guide hole 11 from the front end side.
Then, the tip is pushed until it reaches the potting agent injection chamber 12, and when the pushing is completed, the dispenser is operated to dispense the potting agent (for example, epoxy resin) (see FIG. 1). Then, the potting agent injection nozzle 13
The potting agent poured out from the tip of the container spreads into the potting agent injection chamber 12.

When the potting agent is filled around the guide hole 11 to some extent, the potting agent injection nozzle 13 is pulled out of the guide hole 11 and the other guide hole 11 is removed.
(Three potting agent injection nozzles 13 may be prepared and inserted all at once). Then, the potting agent is injected into the potting agent injection chamber 12. When the injection operation for all the guide holes 11 is completed, the operation for injecting the potting agent into the potting agent injection chamber 12 is completed. Thereby, the sealing property for the insertion portion of the terminal 9 is ensured.

As described above, in the present embodiment, when the potting agent is injected, the potting agent injection nozzle 13 can be guided along the guide hole 11. Therefore, since the potting agent injection nozzle 13 does not shake and touch other parts, it is possible to prevent the potting agent from adhering to the terminal 9 or the like. In addition, as shown in FIG. 4, the guide hole 11 is located at a position other than the surface (the inner wall surface of the connector connection chamber 8, the outer surface of each of the prying prevention pieces 10, etc.) related to fitting with the female connector 21 as the mating side. Since it is formed, even if the potting agent adheres to the inner peripheral surface of the guide hole 11 when guiding the potting agent injection nozzle 13, it does not affect the connection of the connector, the contact of the terminal 9, or the like. .

Further, since three guide holes 11 are formed at equal intervals and the potting agent is injected into the potting agent injection chamber 12 from three places, the potting agent injection chamber 1 is formed.
For 2, the potting agent can be injected to a uniform depth. Further, the guide hole 11 is provided with the existing prying prevention piece 1.
Since it is formed by cutting out 0, there is no need to provide a dedicated member for forming the guide hole 11, and it is possible to not only reduce costs but also prevent an increase in the size of the connector.

The present invention is not limited to the above-described embodiment, but can be modified as follows, for example, and these embodiments also belong to the technical scope of the present invention. (1) In the above-described embodiment, the guide holes 11 are formed at predetermined intervals in the twist prevention pieces 10. However, as shown in FIG. Passageway 31 cut out to equal depth
The guide holes 11 may be connected to each other via the passage 31. Other parts are the same as those in the above embodiment, and the same parts are denoted by the same reference numerals and description thereof will be omitted. Thereby, the potting agent injection nozzle 13
The other guide hole 11 is inserted through the passage 31 while the
Therefore, it is not necessary to insert and remove the potting agent injection nozzle 13 with respect to each guide hole 11 each time. Therefore, the potting agent injection work efficiency can be increased as compared with the case of the above embodiment.

(2) As shown in FIG. 6, a tapered surface 41 is formed at the opening edge above the guide hole 11, and the potting agent injection nozzle 13 (see FIG. 1) is connected to the guide hole 11.
It may be easy to insert the Thereby, the potting agent injection nozzle 13 is smoothly inserted into the guide hole 11.

(3) In the above embodiment, the guide hole 11
Although the stiffening prevention piece 10 is formed, the stiffening prevention piece 10 may be formed at a portion different from the squirting prevention piece as long as the portion does not rub when fitted with the female connector. In addition, the present invention can be implemented with various modifications without departing from the scope.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing the entirety of the present embodiment.

FIG. 2 is a front view of the connector of the embodiment.

FIG. 3 is a front view of a female connector coupled to a second connector coupling chamber.

FIG. 4 is a sectional view showing a guide hole in a coupled state.

FIG. 5 is a front view showing another embodiment (in which each guide hole is connected via a passage).

FIG. 6 is a partially enlarged perspective view showing another embodiment (in which a tapered surface is formed in a guide hole).

[Explanation of symbols]

 Reference Signs List 8: second connector coupling chamber (connector coupling chamber) 9: terminal 10: twist prevention piece (twist prevention part) 11: guide hole (guide part) 12: potting agent injection chamber (potting agent injection part) 13: potting agent Injection nozzle 21 ... female connector (mating connector) 23 ... dent prevention piece insertion recess (insertion recess) 31 ... passage

Claims (2)

(57) [Claims] To 1. A To prevent leakage of liquid from the insertion portion of the terminal one in connector having a potting agent supply portion in the connector coupling chamber, the prevention unit prying in the connector coupling chamber is provided
On the other hand, on the mating connector,
Acceptable insertion recesses are formed along the edges to further
A region inside the outer edge portion in the twist prevention portion
To the potting agent injection section along the depth direction
A void is formed so that they can communicate with each other.
A connector having a guide portion for guiding a potting agent injection nozzle toward the potting agent injection portion. 2. The device according to claim 1 , wherein a plurality of guide portions are provided in the prying prevention portion, and a passageway between which the potting agent injection nozzle can move is provided between the guide portions. A connector characterized by being formed.