JP3027049U - Card connector - Google Patents

Abstract

(57) [Abstract] [Purpose] It is an object of the present invention to provide a card connector having a two-stage housing that can be easily manufactured and can improve the positional accuracy of the solder tail. . [Structure] The housing 1 is laminated in two stages. The upper and lower housings 1 are integrated by an overmolded portion 5. The solder tails 9a and 9b of the conductive terminal 4 provided in each housing 1 are held by the overmolded portions 10a and 10b.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a connector for a card used at a connecting portion between a card such as a SIMM card and another electronic circuit.

[0002]

[Prior art]

 Conventionally, this type of card connector has a base portion and a housing formed in a U-shape in a plane shape at a side portion continuously connected to both ends of the base portion, and at a predetermined pitch along the base portion. And a plurality of conductive terminals provided (for example, US Pat. No. 5,387,115). By maintaining contact between the conductive part formed on the side edge of the card and the contact part of the conductive terminal of the card connector, the electronic circuit (for example, memory circuit) in the card and other electronic circuits can be connected to this card. It is possible to connect via a connector.

[0003]

[Problems to be solved by the device]

 The card connector normally has a single-stage housing, but there is a limit to the number of conductive terminals that can be installed in a single housing. Therefore, as the number of circuits such as memory circuits on the card side increases, the housing will have two stages. It is necessary to increase the number of conductive terminals by configuring the above. However, there is a problem in that manufacturing the two-stage housing integrally causes difficulty in manufacturing and raises manufacturing cost.

Further, the conductive terminal is usually made of a punched terminal formed by punching a metal plate so that the position accuracy of the solder tail can be obtained. Considering the assembling efficiency of the housing and the conductive terminal, a so-called forming pin type conductive terminal obtained by molding a metal wire is desired instead of the punching terminal, but the forming pin type conductive terminal is a solder. Since the position accuracy of the tail is inferior, there was a problem that it was particularly difficult to adopt when the housing had a two-stage structure.

The present invention has been made in view of the above problems, and provides a card connector having a two-stage housing that facilitates manufacturing and improves the positional accuracy of the solder tail. The purpose is to do.

[0006]

[Means for Solving the Problems]

 The present invention that achieves the above-mentioned object includes a housing having a base portion and side portions that are connected to each other at right angles from both ends of the base portion, and a plurality of conductive terminals provided at a predetermined pitch along the base portion of the housing. In the card connector, the housings are stacked in two layers and integrated by the overmolded portion, and the solder tails of the conductive terminals provided in each housing are held by the overmolded portion. This is a characteristic card connector.

In the card connector as described above, the solder tail of the conductive terminal provided in the upper housing is guided to the outside of the base of the housing, and the solder tail of the conductive terminal provided in the lower housing is connected to the base of the housing. It is advantageous to arrange the conductive terminals inside the housing in order to arrange the conductive terminals of the upper and lower housings in an orderly manner and to facilitate the soldering work with the conductive parts of the printed circuit board. Further, if the latch pieces for engaging the card are integrally provided on the side portions of the upper and lower housings, it is advantageous in that it is not necessary to separately assemble the metal latch pieces.

[0008]

[Action]

 According to the present invention, the upper and lower housings can be separately molded for one step, so that the housings can be easily molded without causing manufacturing difficulties. Also, the solder tail of the conductive terminal can secure the required positional accuracy by the overmolded portion.

[0009]

Embodiment Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings. FIG. 1 is an enlarged sectional view of a card connector according to an embodiment, FIG. 2 is a perspective view thereof, and FIG. 3 is an exploded perspective view thereof.

In the card connector of the embodiment, the housings 1 that are separately molded are stacked in two layers. Each housing 1 is formed into a planar U-shape by a base portion 2 and side portions 3 that are continuously connected from both ends of the base portion 2 at right angles. The base portion 2 of each housing 1 has a base portion 2. 2 is provided with a plurality of conductive terminals 4 arranged in parallel at a predetermined pitch. As shown in FIGS. 2 and 3, the upper and lower housings 1 are formed with the overmolded portions 5 by forming the overmolded portions 5 along the abutting portions of the mutual housings 1. Are integrated.

The conductive terminal 4 is of a so-called forming pin type, and the contact portion 6 faces the card insertion opening 7 formed in the base portion of the housing 1, and the intermediate portion 8 has an outer surface 2 a of the base portion 2. Is led from the outside. The contact portion 6 is alternately arranged so that it faces from the upper portion of the card insertion opening 7 and the one that faces from the lower portion. The normal technique for narrowing the parallel pitch of the conductive terminals 4 is adopted. Has been done.

The intermediate portion 8 of the conductive terminal 4 of the upper housing 1 is extended toward the lower housing 1 from the outer surface 2 a of the base portion 2 of the housing 1, and the lower end thereof is further bent outward in a crank shape. It is used as a solder tail 9a. On the other hand, the middle portion 8 of the conductive terminal 4 of the lower housing 1 is hung from the outer surface 2a of the housing 1 to the lower surface 2b side, and the lower end portion is bent inward of the base portion 2 in a crank shape to serve as a solder tail 9b. is there. At the same time when the overmold part 5 is molded, the overmold parts 10a and 10b sandwich the base part 2 between the solder tail 9a arranged outside the base part 2 of the lower housing 1 and the solder tail 9b arranged inside the base part 2. The solder tails 9a and 9b are formed between the opposing side portions 3 and hold the solder tails 9a and 9b at regular intervals so that the solder tails 9a and 9b can be positioned with high accuracy.

As shown in FIG. 4, the overmolded portion 5 is configured to fill a resin in a recessed portion 12 formed by a stepped portion 11 formed along the contact portions of the upper and lower housings 1. However, as shown in FIG. 5, a recessed portion 13 is further formed in the stepped portion 11 to enhance the engagement force between the resin of the overmolded portion 5 and the resin of the housing 1 to integrate the upper and lower housings 1 with each other. The chemical strength can also be improved.

A latch piece 14 that can be engaged with a side edge of a card (not shown) is integrally formed with the side portion 3 at the tip of the side portion 3 of each housing 1. Since the upper and lower housings 1 are separately formed and laminated, the molding die of the housing 1 is prevented from being complicated, and as a result, such a latch piece 14 is integrally formed with the side portion 3. It is possible to eliminate the need to attach a separate piece (made of metal) of the latch piece to the side portion 3.

In the above embodiment, the conductive terminal 4 is of the so-called forming pin type, but it is also possible to use a punching terminal formed by punching a metal plate.

[0016]

[Effect of device]

 According to the present invention, since the housings are stacked in two layers and integrated by overmolding, it is possible to avoid complication of the molding die of the housing and avoid manufacturing difficulty. Also, since the solder tail of the conductive terminal is held by overmolding, there is an effect that the position accuracy of the solder tail can be improved, and the required positioning accuracy can be obtained even in the forming type conductive terminal.

[Brief description of drawings]

FIG. 1 is an enlarged sectional view of an embodiment of the present invention.

FIG. 2 is a perspective view of the same embodiment.

FIG. 3 is an exploded perspective view of the same embodiment.

FIG. 4 is a partially enlarged sectional view of the same embodiment.

FIG. 5 is a partially enlarged cross-sectional view of another embodiment of the present invention.

[Explanation of symbols]

 1 Housing 2 Housing Base 2a Base Outer Side 2b Base Bottom 3 Housing Side 4 Conductive Terminal 5 Overmolding 6 Conductive Terminal Contact 7 Card Insert 8 Conductive Terminal Middle 9a, 9b Conductive Terminal Solder Tail 10a Overmolded portion 10b Overmolded portion 11 Stepped portion 12 Recessed portion 13 Recessed portion 14 Latch piece

Claims (3)

[Scope of utility model registration request] 1. A card connector having a housing having a base portion and side portions extending from both ends of the base portion at right angles, and a plurality of conductive terminals provided along the base portion of the housing at a predetermined pitch. A housing for a card, wherein the housings are stacked in two stages and integrated by an overmolded portion, and a solder tail of a conductive terminal provided in each housing is held by the overmolded portion. 2. The solder tail of the conductive terminal provided on the upper housing is guided to the outside of the base of the housing, and the solder tail of the conductive terminal provided on the lower housing is guided to the inside of the base of the housing.
The card connector according to claim 1, wherein the card connector is held by the overmolded portions. 3. The card connector according to claim 1, further comprising a latch piece integrally formed on the side portion of the housing for engaging with the card.