JP2587489Y2 - Electrical connector - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to an electrical connector comprising a housing and a plurality of contacts having a lance which is engaged in a cavity of the housing.

(Prior Art) When electrical and electronic circuits are connected to each other, electrical connectors are frequently used for convenience of connection and removal. Although there are various types of this electrical connector, a plurality of contacts connected to each of the signal lines and each of the ground lines are arranged in the connector housing,
There is a type in which a signal line and a ground line are each connected to a counterpart circuit via different contacts. Further, in such an electrical connector, after the contact is once inserted into the cavity of the connector housing in which the contact is inserted, the contact is engaged with the cavity of the connector housing so that the contact does not easily come off. A lance is often provided.

(Problem to be solved by the invention) Using the electrical connector configured as described above,
When connecting the electronic circuits to each other, it is preferable that the ground line is connected before the signal line in order to prevent breakage of the circuit element.

In view of the above circumstances, the present invention pays particular attention to the connection in an electrical connector of a type in which a signal line and a ground line are each connected to a counterpart circuit through different contacts. It is an object of the present invention to provide an electrical connector configured so that a ground line is connected earlier than a signal line.

(Means for Solving the Problems) An electrical connector according to the present invention is an electrical connector comprising a housing and a plurality of female contacts having a lance engaged with a cavity of the housing. Is provided with a projection projecting forward from the front part of the female contact and capable of contacting the inner surface of the front part of the housing. Among the female contacts, the ground line contact is more than the signal line contact. In order to shorten the length of the protrusion, the protrusion can be cut off at a predetermined position in the axial direction of the female contact, and the inner wall of the cavity that engages with the lance corresponds to the position of the tip of the lance. And two stages.

(Operation) The electrical connector of the present invention has two types of contacts prepared or processed before assembling contacts of the same shape into the cavity of the housing, so that the distance between the contact point and the mating surface can be selected in two stages. Therefore, by using the shorter one of the distance between the contact point and the mating surface as the ground contact, when connecting this connector to another connector that is combined with the electrical connector,
Without special attention, the ground contact of this electrical connector and the ground contact of another connector are connected first, and the signal line contact of this electrical connector and the signal line contact of another connector are connected later. In addition, destruction of circuit elements can be prevented.

(Embodiment) An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows a female contact (hereinafter simply referred to as a contact) in one embodiment of the electrical connector of the present invention.
FIG.

In the wire barrel 11 of the contact 10, the tip of the covered electric wire 1 in which the core wire 1a is exposed is arranged, and a portion adjacent to the tip is arranged in the insulation barrel 12, and these wire barrel 11 and the insulation barrel 12 are arranged. Is bent inward so that the insulated wire 1 is held by the contact 10 and the contact 10
And the core wire 1a of the insulated wire 1 are electrically connected. The connection between the contact 10 and the insulated wire 1 is irrelevant to the features of the present invention, so that the insulated wire 1 is not shown in the following drawings, and the wire barrel 11 and the insulated wire including FIG. The insulation barrel 12 is shown in a state before bending.

The contact 10 has an opening 13, and a pin contact of another connector is inserted into the contact 10 from the direction of arrow A through the opening 13. Further, on both sides of the opening 13, projections 14 projecting forward are formed. In addition, a lance 15 is provided on the upper surface of the contact 10 so as to be bent obliquely upward and rearward.

In addition to the contact 10 configured as described above, a contact 10 ′ slightly different from the contact 10, which forms one electrical connector together with the contact 10, is prepared. This contact 10 'is
A protrusion 14 ′ having a larger protrusion amount than the protrusion 14 of the contact 10.
And a lance 15 ′ shorter than the lance 15 of the contact 10.

FIG. 2 shows the projections 14, 1 of the two types of contacts 10, 10 '.
In order to compare the lengths of 4 ′ and lances 15 and 15 ′, the positions C ₁ and C ₁ ′ of these two types of contacts 10 and 10 ′ which are in contact with the pin contacts of the other connector are matched. FIG. 3 is a side view showing types of contacts 10, 10 ′.

The projection 14 'of the contact 10' (FIG. 2 (b)) projects more than the projection 14 of the contact 10 (FIG. 2 (a)), and the contact 10 'is larger than the lance 15 of the contact 10. It has a short lance 15 '. Here contact 10
Is used as a contact for a ground line, and the contact 10 'is used as a contact for a signal line.

FIG. 3 is a schematic view showing a state in which the contacts 40, 40 'are inserted into cavities 51 formed in the same shape of the housing 50 in one embodiment of the electric connector of the present invention.

In the contact 40 in this embodiment, the projection 41 can be folded along a broken line 42, and the contact 40 'is formed by folding the projection 41. Therefore, these two
Kinds of contacts 40, 40 'are lances 4 of the same length
3,43 and housing 50 to deal with this
The locking portion 52 protruding into the cavity 51 of the
It projects in two steps: a step in which 43 is locked and a step in which the lance 43 of the contact 40 'is locked. In this state, the protrusion
The projection 41 and the projection 41 ′, which is formed by folding the projection 41, is in contact with or substantially in contact with the front inner surface of the housing 50.

In this embodiment, when the pin contact 31 of the other connector 30 is inserted into the contacts 40 and 40 ', the pin contact 31 inserted into the contact 40' (the contact for the ground line) is inserted in the same manner as in the above embodiment. First, the contact 40 'comes into contact, and then the pin contact 31 inserted into the contact 40 (contact for the signal line) is contacted.
Contact 40.

(Effects of the Invention) As described above, the female contact of the present invention is provided with a protrusion that can be abutted on the inner surface of the front part of the housing, and when the protrusion is used as a ground line terminal, the protrusion is notched and shortened. Since the inner wall of the housing has two stages corresponding to the contact lances, the following effects can be obtained.

That is, only one type of contact is prepared, and two types of contacts that are sequentially connected as necessary can be obtained. Since the protrusion at the tip of the contact abuts against the inner surface of the housing, the contact can be reliably held when the other contact is pulled out. Since the mold cost and the manufacturing cost can be reduced, a low-cost contact can be obtained.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a contact in one embodiment of the electric connector of the present invention, and FIG. 2 is a diagram showing the two types of contacts in order to compare the length of a projection and a lance of two types of contacts. FIG. 3 is a side view showing these two types of contacts by aligning the positions of the contacts with the pin contacts of another connector. FIG. 3 is a view showing an embodiment of the electrical connector of the present invention.
It is the schematic showing the state where two types of contacts were inserted in the cavity of the housing. 40, 40 '... female contact 41, 41' ... projection 43 ... lance 50 ... housing 51 ... cavity 52 ... locking part

Continuation of the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) H01R 23/00-23/68 H01R 13/11 H01R 13/64-13/652 G06F 1/00

Claims (1)

(57) [Scope of request for utility model registration] 1. An electrical connector comprising a housing and a plurality of female contacts having a lance engaged in a cavity of the housing, wherein the female contacts protrude forward from a front portion of the female contacts. A protrusion is provided on the inner surface of the front part of the housing so that a contact for a ground line among the female contacts is shorter than a contact for a signal line. The electrical connector according to claim 1, wherein the protrusion is foldable at a predetermined position in the axial direction of the contact, and an inner wall of the cavity that engages with the lance has two stages corresponding to a position of a tip of the lance.