JP3233843B2 - Electrical connector and contacts used for it - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electrical connector, in particular, a contact, which is housed in a housing under preload.
The present invention relates to an electrical connector that is connected to a mating contact with a relatively strong contact force.

[0002]

2. Description of the Related Art Japanese Utility Model Laid-Open No. 61-131075 and Japanese Utility Model Laid-Open No. 5
No. 6,147,583, Japanese Utility Model Application Laid-Open No. 58-17778, and Japanese Utility Model Application Laid-Open No. 4-10983 show electrical connectors in which contacts are preloaded.
The contact of the disclosed electrical connector has a contact piece serving as a contact portion with a mating contact or a mating terminal that has been elastically displaced in advance by a preload, and is supported in the housing in a state where the displacement has been received. With this configuration, the electrical connector receives the mating connector or the board or the like with a relatively low insertion force and fits with them, and the accommodated contact can contact the mating contact or the mating terminal with a relatively strong contact force. .

[0003]

In recent years, electrical connectors have been downsized.
Although the pitch tends to be narrowed, it has been desired to cope with this kind of electrical connector, that is, an electrical connector in which the contacts are preloaded.

That is, an object of the present invention is to provide an electric connector for accommodating a contact in a housing by preloading the contact, and to provide an electric connector having a configuration suitable for downsizing and narrowing the pitch, and a contact to be used.

[0005]

Means for Solving the Problems The present inventionElectrical connector
Is, Contact with preloadInside the housing
Wherein the contacts are,
ThatAt least one pair in the housingAcross the bulkhead
Being placed back to back, the paircontact
ofEach,Eccentric with respect to the axis of the contact
positionPreload from the stop wall of the bulkhead at the stop projecting from
Is givenIt is characterized by the following.

[0006]

The electrical connector of the present invention has a plurality of contacts having cantilever-shaped contact pieces and an insulating housing in which a cavity for accommodating them is formed. The contacts have a length from an eccentric position of the tip of the contact piece. It has a stop (finger) extending in the direction. On the other hand, the cavity of the housing provides a stop wall for supporting the stopper and applying a preload to the contact piece, and a space for allowing the movement of the stopper when the contact piece bends due to contact with the mating contact or the mating terminal. Have. The space communicates with the cavity and is provided at a position eccentric to the cavity. The cavities are arranged in two rows so that the contacts are arranged back to back. Each space communicating with the cavity is displaced from the space of the cavity at the back-to-back position and is formed at a complementary position, so that the electrical connector is reduced in size and pitch.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an electrical connector and a contact according to a preferred embodiment of the present invention will be described in detail with reference to the drawings.

FIGS. 1 and 3 show a board-mounted electrical connector 10 according to a preferred embodiment of the present invention. The electrical connector 10 has a housing 40 and a contact 60 made of resin. As shown in FIGS. 1A and 3, the housing 40 has a central partition wall 41 at the center on the fitting surface side, and the contacts 60 are arranged in two rows back to back with the partition wall 41 interposed therebetween. The housing 40 further has posts 42 for alignment when mounted on a substrate.

As shown in FIGS. 2 (a) and 2 (b) together with a carrier strip 70, the contact 60 has a contact piece 69 including a substantially arc-shaped contact portion 61 and an elastic portion 62, and a support portion 6
3, including an extension 64 and a solder tine 65. A finger (stop) 66 protrudes from the eccentric position on the contact tip side of the substantially arc-shaped contact portion 61. The operation of the finger 66 will be described later. While the resilient portion 62 of narrower width in conjunction with the contact portion 61 as shown, is formed, the contact force of the contacts 60 is provided by the elastic force of the elastic portion 62. The support 63 includes a press-fit projection 67. The extension 64 is a support 63
To the solder tine portion 65. The vicinity of the boundary between the extension portion 64 and the solder tine portion 65 includes a protrusion 68 for aligning the solder tine portion 65. The operation of the projection 68 will be described later.

Contact 60 is located within housing 40 as shown in FIG.
Are arranged as shown in FIG.
Is pressed into the receiving groove 48 so that the housing 40
Supported by In addition, according to FIG. 3, the extension 64 of the contact 60 abuts the wall 44 located inside the housing 40. As shown in FIGS. 3 and 4, a step 49 is provided near the bottom end of the cavity 45 so as to be able to contact the projection 68 of the contact 60. With these configurations, the contact 6
The zero extension 64 and the solder tine 65 are aligned at the appropriate locations.

Referring to FIGS. 4 and 5, the contact receiving cavity 45 of the housing 40 is formed in communication with the mating connector receiving recess 43 and has a blocking wall 46 for preloading the contact piece 69 and a mating contact or mating contact. When the contact piece 69 is bent by the contact with the terminal, a substantially rectangular space 47 is provided for enabling the finger 66 to be displaced. Further, according to FIG. 4, the space 47 is the space 47 of the back-to-back cavity 45.
And a part of the central partition wall 41 is cut out by the space 47. On the other hand, the finger portion 66 of the contact 60 is formed at a position eccentric to the axis in accordance with the space 47 as shown in FIG. When the contact 60 is received in the cavity 45, the finger 6
6 is accommodated in the space 47, and at this time, the plate surface of the finger 66 abuts on the blocking wall 46 so that the contact piece 69 receives a preload. When the contact 60 bends by contacting with a mating contact or a mating terminal, the finger 66 moves in the space 47 as shown in FIGS.
It moves in the direction of arrow B inside.

With the above structure, the contact walls 60 can be preloaded appropriately, and at the same time, the wall thicknesses a and b can be sufficiently large so that the central partition wall 41 has sufficient strength. Therefore, in this electric connector, the contact 6 is moved in the direction A in FIG.
The pitch of 0 can be made smaller.

As described above, the electric connector and the contact according to the preferred embodiment of the present invention have been described. However, this does not limit the present invention, and various modifications and changes can be made by those skilled in the art.

According to the electrical connector of the present invention and the contacts used therein, an appropriate preload can be applied to the contacts and the contacts can be arranged at relatively small intervals, so that the size of the connector can be reduced. Alternatively, it is possible to sufficiently cope with the narrowing of the contact pitch.

[Brief description of the drawings]

FIG. 1 is a view showing an electric connector according to a preferred embodiment of the present invention, wherein (a) is a plan view and (b) is a front view.

2A and 2B are diagrams showing a contact used in the electrical connector of FIG. 1 together with a carrier strip, wherein FIG.
(B) is a front view including a partial cross section.

3 is a partial cross-sectional view showing a cross section of the housing of the electrical connector of FIG. 1 along a line 3-3 in FIG. 1, that is, a cross section of the entire housing at a position along a line 3′-3 ′ in FIG.

FIG. 4 is an enlarged bottom view of a part of a housing used for the electrical connector of FIG. 1, showing a part 4 in FIG. 3;

FIG. 5 is a partially enlarged view showing the vicinity of the contact tip in FIG. 3 in an enlarged manner.

[Explanation of symbols]

 40 Housing 60 Contact 66 Stop part (finger part)

Claims (1)

(57) [Claims] 1. A electrical connector for accommodating a contact Howe <br/> in managing while applying a preload, wherein the contact is at least one pair are arranged back to back across the partition wall in the housing And each of the pair of contacts is provided with a stop projecting from a position eccentric to each other with respect to the axis of the contact.
An electrical connector characterized in that a preload is applied from a wall restraining wall .