JPH1012332A - Manufacture of card connector and the card - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a manufacturing method of a card connector and of a simple and inexpensive card mounted on a circuit board, provided with a lead terminal for surface connection, and performing connection to an external circuit in which the lead terminal is heavily placed on a connection land with high precision without affecting an external shape of the card and without using a jig. SOLUTION: This connector is composed so that a protrusion 3 having an abutting face 35 pinching a connection face 25 of a lead terminal 2 and a circuit substrate 5 opposite thereto is protruded in a connector housing 11, further the protrusion 3 is provided with a cut-in portion 33 so that a root portion is enclosed and has a step, and plural protection guide portions 4 having an abutting face 45 into contact with a circuit substrate 5 on the same face at a tip portion are protruded in the connector housing 11. For manufacture of the card, the circuit 5 is thus pinched between the lead terminal 2 and the protrusion 3, connection of the lead terminal 2 is performed, and the protrusion 3 is removed and manufactured after completion of the connection.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a card for accommodating a circuit board, a card connector mounted on the circuit board, provided with a lead terminal for surface connection, and connected to an external circuit, and a method of manufacturing the card.

2. Description of the Related Art In recent years, portable information terminal devices have been developed to include a memory card, an IC card, and a PC such as a LAN card having a communication function so that the main body has both expandability and miniaturization.
(Pe-rsonal Computer) cards have become very popular.

[0003] In addition, the demand for miniaturization and high-density mounting of cards has required ever-thinner, more multi-terminal connections, and higher reliability, and there is a particularly strong demand for connectors mounted on the edge of the card. Expected.

[0004]

2. Description of the Related Art FIG. 3 is a side sectional view of a card to which the present invention is applied. FIG. 4 shows a conventional general method of connecting and fixing a card connector to a circuit board. Fixed,
(b) is fixing by the side edge guide part provided in the connector housing.

As shown in FIG. 3, in a card to which the present invention is applied, a lead board 2 is soldered to a circuit board 59 on which an electronic component (not shown) is mounted to form an electronic circuit, and a connection land 55 formed on the edge thereof. A connector 19 for attaching and connecting to a circuit with the outside, and a cover 68 covering all sides except for the opening of the connector 19
And a card 69 comprising:

In soldering the connection lands 55 of the circuit board 59 to the lead terminals 2 of the connector 19, a conventional method generally used for fixing both is shown in FIG. As shown in the sectional side view of the main part in FIG.
The both sides and the lower surface of the circuit board 59 and the connector 19 are brought into contact with each other, the connection surface 25 of the lead terminal 2 is placed on the connection land 55, and the fixing jig B92 presses the upper surface of the connector 19 to fix it. Fixing with a jig to screw the fixture A91 is used. After fixing, it is placed in a heating furnace and reflow soldered, the fixtures A91 and B92 are removed, and finally a cover (not shown) is put on and fixed to complete. Become.

Further, as shown in FIG. 4B, fixed guide portions 93 provided with guide grooves for inserting and fixing the side edge portions of the circuit board 58 are provided at both ends of the housing of the connector 18 so as to face each other. When the circuit board 58 is inserted and fixed in the fixed guide portion 93, the connection land 55 has the connection surface 25 of the lead terminal 2.
Are controlled by the positional relationship in which they are superimposed, heated as they are, connected by reflow soldering, and finally covered with a cover (not shown) and fixed to complete.

[0008]

However, the fixing method using a jig requires the preparation of exclusive fixing jigs A91 and B92, and involves the work of mounting and subsequently removing the jig. Further, the method of inserting and fixing the circuit board 58 into the fixed guide portions 93 at both ends of the connector 18 is such that if the edge of the circuit board 58 is warped, the connection surface 25 of the lead terminal 2 and the connection land
There may be a gap between the solder and 55, resulting in incomplete soldering. Further, the fixed guide portions 93 protrude on both sides, and the outer shape of the card increases accordingly. And so on.

In view of the above problems, the present invention provides a simple and inexpensive structure for a card in which lead terminals are placed on connection lands with high precision without using a jig and without affecting the outer shape of the card. An object of the present invention is to provide a method for manufacturing a connector and a card.

[0010]

SUMMARY OF THE INVENTION The above objects are achieved by the principle configuration of the present invention shown in FIG. 1, the perspective view of FIG. 1 (a), the sectional side view of FIG. 1 (b) before connection, and the connection after FIG. 1 (c). As shown in the side sectional view of [1], a card connector 1 mounted on a circuit board 5 and provided with a lead terminal 2 for surface connection and connected to an external circuit
The card housing according to the present invention, wherein at least one protrusion 3 having a connection surface 25 of the lead terminal 2 and a contact surface 35 facing the connection surface 25 and sandwiching the circuit board 5 protrudes from the connector housing 11. This is achieved by the connector 1. [2] Further, the projection 3 is also suitable for the card connector 1 of the present invention in which the cut portion 33 is provided so that the base of the connector housing 11 is narrowed and has a step. [3] Further, the contact guide surface 45 that contacts the circuit board 5 is provided on the same surface in front of the connection surface 25 of the lead terminal 2. The present invention is also achieved by the card connector 1 of the present invention, which is formed in a plurality of rows. [4] A method of manufacturing a card 6 which accommodates a circuit board 5 on which the connector 1 is mounted on an edge and is connectable to an external circuit via the connector 1, wherein a lead for surface connection of the connector 1 is provided. Both sides of the circuit board 5 are sandwiched between the terminal 2 and the projection 3 protruding from the connector 1 to connect the lead terminal 2 to the circuit board 5 and after the connection is completed, the projection 3 is removed without projecting. The present invention is also applicable to the card manufacturing method of the present invention.

That is, since the edge of the circuit board 5 contacts and is pinched at many places by the lead terminals 2 and the projections 3 of the connector 1, it is temporarily fixed, and the connection portion can be connected by reflow soldering or the like. .

It is to be noted that even if the connection portion of the circuit board 5 is warped, it is pressed against the protrusion 3 and corrected, or is clamped between the protrusion 3 and the protection guide portion 4 so that the connection can be reliably performed. At this time, it is more effective to consider the number and arrangement of the protrusions 3 and the protection guide portions 4 in accordance with the tendency of the warpage to occur.

Further, the contact surface 45 of the protection guide portion 4 is in contact with the circuit board 5 on the same surface at a portion ahead of the connection surface 25 of the lead terminal 2, and has high strength and deforms the lead terminal 2. It has a protective action against being deformed by stepping on such external force.

Since the projection 3 has the cut portion 33 at the base thereof, it can be easily bent and removed without using a tool or the like due to the constriction, and is removed on the step surface lowered by one step. Can be prevented from traveling from the surface of the connector housing 11 without further cutting.

As described above, the outer shape of the connector 1, that is, the outer shape of the card 6 does not have any influence on the outer shape of the connector 1 by the manufacturing method of removing the protrusion 3 after use. The projections 3 and the protection guides 4 can be integrally formed with the connector housing 11 and have a simple structure, and the cards 6 are mass-produced.

Thus, according to the present invention, without using a jig,
An object of the present invention is to provide a card connector having a simple and inexpensive structure and a method of manufacturing a card, in which lead terminals are overlapped and connected to connection lands with high accuracy without affecting the outer shape of the card.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be specifically described below with reference to embodiments shown in the drawings. The same reference numerals indicate the same objects throughout the drawings. 2A and 2B show an embodiment of the present invention, wherein FIG. 2A is a configuration perspective view, and FIG.

In the embodiment of the present invention, as shown in FIG. 2 (a), a plug-in card 6 used for a portable information terminal device or the like includes a circuit board 5 composed of a printed wiring board constituting an electronic circuit. The connector 1 is mounted on the edge thereof, and the cover 61 covers the outer side surface except for the opening of the connector 1.

In the circuit board 5, connection lands 55 for external connection to the circuit pattern for external connection are arranged in two rows in accordance with the arrangement of the connection surfaces 25 of the lead terminals 2 of the connector 1. Is chamfered 54.

The connector 1 is a multi-terminal connector in which contacts are arranged in two rows on the front surface which is hidden and not shown. Lead terminals 2 connected to the contacts protrude from the rear surface and are bent in a Z-shape, and the bent front end surface is connected. A surface 25 is formed, aligned so as to be located on the same surface, and plated with solder. Further, two projections 3 are provided at the rear part of the lower surface of the connector housing 11 shown at the center of the drawing, and are provided at 1/2 positions, and protection guide parts 4 are provided at both ends and the central part of the rear surface of the connector housing 11. It is.

As shown in FIG. 2B, the projection 3 has a notch 33 formed at the base of the connector housing 11 and is narrowed to a width of 1 mm or less easily by bending and cutting with bare hands. A step is provided to lower the cutting position from the surface so that cutting marks do not travel from the surface. Also, the circuit board 5
1 to 1.5 mm width sandwiching the lead terminal 2 with the connection surface 25 of the lead terminal 2
The contact surface 35 is formed on one surface, and the tip of the contact surface 35 is formed on a sloped guide inclined surface 34 so that the circuit board 5 can be easily sandwiched. The lead terminal 2 can be easily inserted without deforming the chamfer 54.

The protection guide portion 4 has a protruding surface (downward surface in the drawing) having a width of 1 to 1.5 mm and a contact surface with the circuit board 5.
45, and the tip is formed on the guide inclined surface 44 in the same manner as described above, and the length of the contact surface 45 is equal to the connection surface 25 of the lead terminal 2.
Of the circuit board 5
Are almost immovable, and the lead terminals 2 are protected from deformation even if an external force is applied to the circuit board 5 carelessly. At the same time, the warpage of the edge of the circuit board 5 is pinched and corrected by the protrusion 3 and the protection guide portion 4 so that the lead terminal 2 and the connection land 55 can be connected by soldering with high reliability.

The above embodiment shows an example, and the shape and dimensions of each part are not limited to those described above.

[0024]

As described above, the following effects can be obtained by the card connector and the card manufacturing method of the present invention. In the method of fixing the connector and the circuit board in the above-described conventional example, a dedicated fixing jig was required and the attachment and detachment work was required. However, the connector of the present invention does not require a jig, and therefore, there is no attachment and detachment work. It is. Further, since the circuit board is sandwiched and fixed, a correcting action is performed on the warpage of the edge, and the connection between the lead terminal and the connection land can be reliably performed even by reflow soldering. One projection of this pinch is easily bent and cut with bare hands after the connection work, so there is no business trip,
It does not affect the outer shape of the card. Further, since the connector housing is provided with projections and protection guides, the molding is complicated, but the increase in the mold cost is gradually reduced by mass production, and the assembling work of the card is not particularly different from the conventional method without a jig.

As described above, the present invention has a practically great effect, and greatly contributes to productivity and high reliability.

[Brief description of the drawings]

FIG. 1 is a schematic diagram of the principle of the present invention. (A) Perspective view (b) Side sectional view before connection (c) Side sectional view after connection

FIG. 2 is a perspective view of an embodiment of the present invention. FIG.

FIG. 3 is a side sectional view of a card to which the present invention is applied.

FIG. 4 shows a conventional method of connecting and fixing a card connector to a circuit board in a general example. (A) Fixing with a jig.

[Explanation of symbols]

1,18,19 Connector 2 Lead terminal 3
Projection 4 Protection guide part 5,58,59 Circuit board 6,
69 Card 11 Connector housing 25 Connection surface 33
Notch 34,44 Guide inclined part 35,45 Contact surface 54
Chamfer 55 Connection land 61,68 Cover 91
Fixing jig A 92 Fixing jig B 93 Fixed guide

Claims (4)

[Claims] 1. A card connector which is mounted on a circuit board and has a lead terminal for surface connection and which is connected to an external circuit, wherein the connector board is sandwiched between the connection surface of the lead terminal and the connection surface. A card connector characterized in that at least one protrusion having an abutting surface protrudes from a connector housing. 2. The card connector according to claim 1, wherein the projection is provided with a notch so that a root of the connector housing is narrowed and has a step. 3. A plurality of protection guide portions projecting from the connector housing and having a contact surface on the same surface at a portion ahead of a connection surface of the lead terminal and in contact with the circuit board, the plurality of protection guide portions protruding from the connector housing. 3. The card connector according to claim 1, wherein the card connector is formed. 4. A circuit board on which the connector is mounted is housed.
A method for manufacturing a card which can be connected to an external circuit via the connector, wherein both surfaces of the circuit board are sandwiched between a lead terminal for surface connection of the connector and a projection protruding from the connector. Connecting the lead terminals to the circuit board, and removing the protrusions without projecting after the connection is completed.