JP6839482B2 - Electrical contact - Google Patents

Description

The present invention relates to an electrical contact that is connected to the end of an electrical cable and inserted into a connector housing to form a connector together with the connector housing.

Some of the above electrical contacts are equipped with a contact lance to prevent them from coming out of the connector housing even if force is inadvertently applied to the electrical cable. This contact lance has a cantilever shape and bends when the electrical contact is inserted into the connector housing, and the bending is released when the insertion is completed. Then, when a pulling force is applied, the rear end portion of the contact lance comes into contact with the vertical wall surface of the connector housing and acts as a resistance to pulling out.

Here, in recent years, in order to further reduce the size and weight, it is urgent to manufacture an electric contact using a plate material having a thinner plate thickness. In that case, the wall thickness of the contact lance becomes thin, and when a pulling force is applied to the electric cable, the contact lance may buckle without obtaining the necessary resistance to the forward pressing force applied to the contact lance. There is.

Here, Patent Document 1 has a structure in which a protrusion provided on the side surface of the contact lance is inserted into an engaging hole of the protective wall to regulate the upward displacement of the contact lance and prevent the contact lance from turning over. Electrical contacts are disclosed.

JP-A-2002-93508

In the case of the electric connector having the structure of Patent Document 1 described above, it is not clear whether the contact lance has a structure that prevents the contact lance from turning upward, but prevents buckling due to the pulling force of the electric cable. ..

In view of the above circumstances, an object of the present invention is to provide an electric contact that suppresses buckling of a contact lance when a pulling force is applied.

The electrical contact of the present invention that achieves the above object is
A contact part that has a side wall and an upper wall and comes into contact with the mating contact,
A stabilizer extending upward from the side wall and
It is equipped with a contact lance that has fixed and free ends in front and behind the stabilizer, respectively, and extends from the upper wall to the rear in the shape of a cantilever to prevent it from coming off the housing.
The stabilizer has a bent portion bent so as to overlap the contact lance in the vertical direction at the upper end portion extending upward.
The SL contact lance abutment region against the stabilizer when the extension beauty co down Taku trans position to laterally overlapping the stabilizer in the longitudinal direction in the rear receives a pressing force forward from the stabilizer, and the abutment It is characterized by having a rising portion that rises upward from the portion and comes into contact with the stabilizer when the contact lance receives a forward pressing force.

In the electrical contact of the present invention, the contact lance has the above-mentioned contact portion and rising portion . Therefore, when the contact lance receives a forward pressing force, not only the contact lance but also the stabilizer together resist the pressing force. Therefore, buckling of the contact lance is suppressed and high resistance can be obtained.
Here, in the case of the electric contact of the present invention, since the rising portion is provided, the buckling of the contact lance is more reliably suppressed as compared with the structure of only the contact portion extending laterally without the rising portion. High resistance can be obtained.
Further, since the electric contact of the present invention has the bent portion, it is possible to suppress the upward turning of the contact lance at the time of assembly or the like.

Here, in the electric contact of the present invention,
The contact part has left and right side walls,
The stabilizer is a pair of stabilizers extending upward from each of the both side walls.
The abutting portion extends to the left and right respectively, Ri pair of contact portions der abutting on each of the pair of stabilizer when the contact lance is subjected to pressing force to the front,
A pair in which the rising portion rises upward from each of the pair of abutting portions and abuts on each of the pair of stabilizers together with each of the pair of abutting portions when the contact lance receives a forward pressing force. It is preferable that it is a rising portion of.

In this case, when the contact lance receives a forward pressing force, the pair of left and right stabilizers are integrated to act as a resistance to the pressing force. Therefore, the buckling of the contact lance is more reliably suppressed and a higher resistance can be obtained as compared with the case of only one side.

Further, in the electric contact of the present invention, it is also preferable that the rising portion abuts on the bent portion of the stabilizer when the contact lance receives a forward pressing force .

According to the above invention, an electric contact that suppresses buckling of the contact lance when a pulling force is applied is realized.

It is the perspective view (A) of the electric contact of one Embodiment of this invention, and the enlarged view of the part of the circle R1 shown in FIG. 1 (A). It is a plan view (A) of the electric contact shown in FIG. 1 and the enlarged view of the portion of the circle R2 shown in FIG. 2 (A). It is an enlarged view of the side view (A) of the electric contact shown in FIG. 1 and the portion of the circle R3 shown in FIG. 3 (A). It is an enlarged front view of the electric contact shown in FIG.

Hereinafter, embodiments of the present invention will be described.

FIG. 1 is a perspective view (A) of an electric contact according to an embodiment of the present invention, and is an enlarged view of a portion of a circle R1 shown in FIG. 1 (A).

Further, FIG. 2 is a plan view (A) of the electric contact shown in FIG. 1 and an enlarged view of a portion of the circle R2 shown in FIG. 2 (A).

Further, FIG. 3 is an enlarged view of a side view (A) of the electric contact shown in FIG. 1 and a portion of the circle R3 shown in FIG. 3 (A).

Further, FIG. 4 is an enlarged front view of the electrical contact shown in FIG.

Here, in FIGS. 3B and 4, the portion of the connector housing in the vicinity of the electrical contact is shown by a dashed-dotted line.

The electrical contact 1 has a contact portion 10 that contacts and is electrically connected to the mating contact. The contact portion 10 is a box-shaped contact portion having a bottom wall 11, left and right side walls 12, and an upper wall 13, and an opening 10A is formed in the front surface thereof. A male contact portion of a mating contact (not shown) is inserted through the opening 10A, and the contact and the mating contact are electrically connected.

Further, the electric contact 1 is provided with a pair of stabilizers 20 extending upward from each of the left and right side walls 12. These stabilizers 20 are for preventing erroneous insertion into the housing.

Further, the electric contact 1 is provided with a contact lance 30. The contact lance 30 has a fixed end on the upper wall 13 in front of the stabilizer 20 (in this embodiment, the front end of the electric contact 1), and extends rearward in a cantilever shape. Then, the contact lance 30 passes between the pair of stabilizers 20 and extends further rearward, and has a free end behind the stabilizer 20. The contact lance 30 is for preventing the electric contact 1 from coming off from the connector housing 2 (see FIGS. 3B and 4). The action of the contact lance 30 to prevent it from coming off will be described later.

The contact lance 30 has a pair of contact portions 31 extending to the left and right to a position where the contact lance 30 overlaps the stabilizer 20 in the front-rear direction behind the stabilizer 20. Further, the contact lance 30 has a pair of rising portions 32 rising upward from the pair of contacting portions 31.

Further, each of the pair of stabilizers 20 has a bent portion 21 bent so as to overlap the contact lance 30 in the vertical direction at the upper end portion extending upward. Further, the contact lance 30 has an upwardly bulging portion 33 extending to the free end on the free end side thereof. A recess associated with the bulging of the upper surface is formed on the lower surface side of the contact lance 30 corresponding to the bulging portion 33.

Further, the electric contact 1 has a crimping portion 40 in which the tip end portion of the electric cable 3 is crimp-connected. The electric cable 3 is shown here only in the vicinity of the electric contact 1, but the electric cable 3 extends further to the rear. Further, the core wire of the electric cable 3 is not shown here.

Next, the function of preventing the contact lance 30 from coming off from the connector housing 2 will be described.

The electrical contact 1 is inserted from the rear to the front of the connector housing 2 in the direction of the arrow X shown in FIG. 3 (B). Since the contact lance 30 has a cantilever shape, when the electric contact 1 is inserted into the connector housing 2, it is pushed by the inner wall of the connector housing 2 and bends, and when the insertion is completed, the bending is released. At the stage when this bending is released, the vertical wall surface 2a of the connector housing 2 is in a state of facing the contact lance 30 immediately behind the contact lance 30. It is assumed that the electric cable 3 is inadvertently pulled while in this state. The direction of this pulling force is the direction of the arrow A shown in FIG. 3 (B). Then, the rear end of the contact lance 30 comes into contact with the vertical wall surface 2a and receives a force in the direction of arrow B. Then, while the contact lance 30 is slightly bent, the contact portion 31 and the rising portion 32 of the contact lance 30 come into contact with the stabilizer 20 in the region T shown by the dotted line in FIG. 3 (B). Then, in addition to the contact lance 30, the stabilizer 20 also integrally resists the pressing force in the direction of the arrow B, and the buckling of the contact lance 30 is suppressed. In the case of the electric contact 1 of the present embodiment, the buckling of the contact lance 30 is suppressed by this structure. The bulging portion 33 (see FIG. 1B) contributes to the improvement of the holding force of the electric contact 1 by increasing the contact area with the vertical wall surface 2a.

Further, the stabilizer 20 has a bent portion 21 at the upper end portion thereof. It is assumed that an electric wire enters under the contact lance 30 on the free end side and the contact lance 30 is lifted. In that case, the contact lance 30 comes into contact with the downward surface of the bent portion 21 of the stabilizer 20 to prevent the contact lance 30 from being lifted further. In the case of the electric contact 1 of the present embodiment, the contact lance 30 is also prevented from being turned over by providing the bent portion 21.

Further, as shown in FIG. 2A, the crimping portion 40 of the electrical contact 1 has a retainer receiving portion 50 recessed sideways. In the retainer receiving portion 50, a retainer (not shown) that is inserted laterally into the connector housing 2 after the electrical contact 1 is inserted into the connector housing 2 is arranged. The retainer also prevents the electrical contact 1 from coming off. Therefore, in the case of the electric contact 1 of this embodiment, the prevention of disconnection by the contact lance 30 has the meaning of temporary locking until the retainer is inserted. In the case of the electric contact 1 of this embodiment, the buckling prevention structure of the contact lance 30 is for preventing buckling when the electric cable is pulled at the stage of temporary locking.

In the above embodiment, since the contact lance 30 is provided with the rising portion 32, the contact area with the stabilizer 20 is increased, and the buckling suppressing effect of the contact lance 30 is high. However, even if there is no rising portion 32 and only the contact portion 31, it has a function of contacting the stabilizer 20 to prevent buckling.

Further, in the above embodiment, since the contact portion 31 of the contact lance 30 and the stabilizer 20 are provided in pairs, the buckling suppressing effect of the contact lance 30 is high, but the contact lance 30 is provided only on either the left or right side. You may.

Further, the pair of bent portions 21 may extend obliquely downward from the upper end portions of the stabilizers 20 so as to approach each other.

1 Electrical contact 2 Connector housing 2a Vertical wall surface 3 Electric cable 10 Contact part 10A Opening 11 Bottom wall 12 Side wall 13 Upper wall 20 Stabilizer 21 Bending part 30 Contact lance 31 Contacting part 32 Rising part 33 Protruding part 40 Crimping part 50 Retainer receiving Department

Claims (3)

A contact part that has a side wall and an upper wall and comes into contact with the contact
A stabilizer extending upward from the side wall and
It is provided with a contact lance for preventing the stabilizer from coming off from the housing, which has fixed ends and free ends in front of and behind the stabilizer, respectively, and extends in the shape of a cantilever from the upper wall to the rear.
The stabilizer has a bent portion bent so as to overlap the contact lance in the vertical direction at the upper end portion extending upward.
The contact lance abutting portion abutting on the stabilizer when the extension beauty the contact lance position laterally to overlap with the stabilizer in the longitudinal direction in the rear than the stabilizer is subjected to pressing force to the front, and the An electric contact characterized by having a rising portion that rises upward from the contact portion and abuts on the stabilizer when the contact lance receives a forward pressing force. The contact portion has left and right side walls,
The stabilizer is a pair of stabilizers extending upward from each of the side walls.
The contact portion extends to the left and right respectively, Ri pair of contact portions der abutting on each of the pair of stabilizer when the contact lance is subjected to pressing force to the front,
A pair in which the rising portion rises upward from each of the pair of abutting portions and abuts on each of the pair of stabilizers together with each of the pair of abutting portions when the contact lance receives a forward pressing force. The electric contact according to claim 1, wherein the electric contact is a rising portion of the above. The electrical contact according to claim 1 or 2, wherein the rising portion abuts on the bent portion of the stabilizer when the contact lance receives a forward pressing force.

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