JP2000173705A - Connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a low-profile connector having contacts fixed to a housing by a press fit. SOLUTION: A connector 10 is equipped with an insulation housing 12, having a plurality of contact accepting cavities 34 and a plurality of blanked contacts 14. Each contact 14 is equipped with a base part 50 having press fit parts 56, 58 on the opposite sides thereof, contact parts 52, 52 extending from one end of the base part 50, and a connection part 54 extending from the other end of the base part 50. At least one press fit part 58, disposed near the connection part is recessed from the side surface of the base part 50. Preferably, the recessed press fit part 58 is substantially formed into a triangle, a side 58a on the fore side of the triangle running along the insertion direction of the contact has a steeper slope than the side surface of the base part 50, and a side 58b on the hind side of the triangle running along the insertion direction has a gentler slope than the side 58a on the fore side.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a board mountable connector having a press-fit portion.

[0002]

2. Description of the Related Art A press-fitting structure in which a pair of press-fitting protrusions are provided on a contact for fixing a conductive contact in a connector housing is widely used in the field of electric connectors. A typical press-fitting structure is disclosed in Japanese Utility Model Laid-Open Publication No. 48-32881 as shown in FIG. The base 102 of the contact 100 is provided with two press-fit projections 104 symmetrically arranged on each side surface.
The contact 100 is the cavity 11 of the housing 110
2, the press-fit projection 104 is inserted into the cavity 11.
2 and the contact 100 is inserted into the housing 11.
Fix within 0.

Another example of a press fit structure is disclosed in US Pat. No. 5,064,391, as shown in FIG. In this US patent, a pair of press-fit projections 154 and 156 are provided on both sides of a base 152 of the contact 150 asymmetrically with respect to the axis of the contact 150 (dashed line). Since one press-fitting protrusion 154 is arranged at a different position along the axial direction of the contact with respect to the press-fitting protrusion 156 'of the adjacent contact 150', the contact pitch is narrower than the pitch of the above-described example 100. be able to.

[0004]

However, in the former press-fitting structure, since the inner wall of the housing is cut off by the press-fitting projection when the contact is inserted, it is necessary to form the inner wall to some extent thick. Therefore, if this press-fitting structure is applied when the axial direction of the contact is parallel to the surface of the board on which the connector is mounted, it becomes difficult to reduce the height of the connector. In the latter press-fitting structure, when the press-fitting structure is applied to the board-mounted connector, the height of the connector can be reduced as compared with the former case. However, it is difficult to make the connector even shorter.

Accordingly, an object of the present invention is to provide a low-profile connector having contacts fixed to a housing by press-fitting.

[0006]

SUMMARY OF THE INVENTION A connector of the present invention includes an insulating housing having a plurality of contact receiving cavities, and a plurality of stamped contacts, each having a press-fit on both sides. In a connector having a base, a contact part extending from one end of the base, and a connection part extending from the other end of the base, at least one of the press-fitting parts arranged near the connection part is from a side surface of the base. It is concave, and when the connection part is soldered, the softened material of the insulating housing enters the concave press-fit part.

Preferably, the recessed press-fit portion is formed in a substantially triangular shape, and a front side of the triangle along the direction of insertion of the contact has a steeper angle than the side surface of the base, The rear side of the triangle along the insertion direction is configured to have a gentler angle than the front side.

[0008] Preferably, the contact portion is configured to have a contact point having a smaller thickness than the remaining portion.

Preferably, the contact portion has a chamfer at an inner corner thereof.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the connector of the present invention will be described below in detail with reference to the accompanying drawings. FIG. 1 is a perspective view of an embodiment of the connector of the present invention.
FIG. 2 is a plan view of the connector of FIG. FIG.
It is a front view of the connector of FIG. FIG. 4 is a side view of the connector of FIG. FIG. 5 is a sectional view taken along line 5-5 in FIG. However, the contact is not sectioned. FIG.
FIG. 4 is a plan view showing one end of the FPC. FIG. 7 shows the FPC
FIG. 4 is a side view showing one end of the device.

Referring to FIG. 1 to FIG.
0 denotes a substantially rectangular parallelepiped insulating housing 12 and a housing 1
The housing 12 includes a plurality of (six in this embodiment) conductive contacts 14 disposed in the housing 2, and a pair of solder pegs 16 disposed on both sides of the housing 12. The housing 12 is
It is made of a suitable thermoplastic material such as 4-6 nylon (polyamide resin) and is formed by a top wall 20, a bottom wall 22, a front wall 24, a rear wall 26 and side walls 28,30. Upper wall 20
FPC (flexible printed circuit board) 8
0 (see FIGS. 6 and 7) for receiving one end
2 are formed. The FPC 80 includes an insulating coating 84,
A plurality of conductors 82 and 82 ′ in the insulating coating 84 and a reinforcing member 86 are provided. The conductors 82 and 82 'are FPC8
0 is exposed at one end. A plurality of (six in this embodiment) contact receiving cavities 34 extending between the front wall 24 and the rear wall 26 communicate with the opening 32. L-shaped solder peg 1
Each 6 is fixed in a respective cavity 36 located adjacent to a respective side wall 28,30.

Referring to FIG. 5, each contact 14 is
It is manufactured by stamping a suitable springy metal plate such as a copper alloy. The contacts 14 are arranged in the housing 12 at a pitch (center interval) of 0.5 mm. Each contact 14 includes a base 50, a pair of contact arms 52, 52 extending forward from a front end of the base 50, and a solder tail 54 extending rearward from a lower rear end of the base 50. 1
The pair of contact arms 52, 52 form a contact portion. The solder tail 54 forms a connection for surface mounting. Base 50
Has press-fit portions 56, 58 inserted between the inner walls 38, 40 of the cavity 34 of the housing 12 on both sides thereof. One press-fit portion located above the base 50 is
6 are formed. The other press-fit portion located below the base 50 is formed as a substantially triangular recess 58. The recess 58 has a steep front side 58 a and this front side 58.
And a side 58b on the rear side that is gentler than that of the rear side. The steep front side 58a resists the force of moving the contact 14 relative to the housing 12. The loose rear side 58b facilitates insertion of the contact 14 into the contact receiving cavity 34 when incorporating the contact 14 into the housing 12. With such a structure, that is, a structure in which at least one press-fitting portion is concave, a low-profile connector having a height of, for example, 1.2 mm can be realized.

Each contact arm 52 has a thin front end 60 formed by coining and a contact arm 5.
2, 52, and a chamfered portion 62 formed inside the root portion. The contact point 60a is located at the thin front end 60 and projects inward. The thin front end 60 and the chamfer 62 allow F
When the PC 80 is inserted into the opening 32 of the housing 12, the risk of one contact 14 contacting a conductor 82 '(see FIG. 6) adjacent to the corresponding conductor 82 of the FPC 80 is reduced. That is, the conductors 82, 82 'of the FPC 80
Since the width of the contact point 60a and the chamfered portion 62 that can make contact with the conductor are relatively small, the risk of contact with a conductor that is not intended to be contacted is reduced.

The housing material softened by heat from the surroundings or the solder tail 54 during soldering flows into the recess 58. After cooling, the housing material engages the steep sides 58a, thereby increasing the retention of the contacts 14 within the housing 12.

Although only one embodiment of the present invention has been described in detail, it will be apparent to those skilled in the art that various modifications and changes can be made without departing from the spirit of the present invention. For example, the contact may have a single contact arm or may be a male contact. The connection is
It may be of a type that is inserted into a through hole of a board on which the connector 10 is mounted. When the two press-fitting portions are equidistant from the connection portion, both the press-fitting portions may be recessed. Further, the mating contact portion that comes into contact with the contact portion may be a known male contact or female contact other than the conductor of the FPC.

[0016]

According to the connector according to the first aspect, at least one of the press-fitting portions arranged near the connection portion is recessed from the side surface of the base portion, and when the connection portion is soldered, the insulating housing is provided. Since the softened material enters into the recessed press-fit portion, there is an advantage that a connector having a lower height and a higher contact holding force with respect to the housing can be obtained.

According to the connector of the second aspect, the recessed press-fit portion is formed substantially in a triangle, and the front side of the triangle along the contact insertion direction has a steeper angle than the side surface of the base. Since the rear side of the triangle along the insertion direction has a gentler angle than the side surface of the base, it is possible to easily insert the contact into the housing and obtain a connector having a high contact holding force with respect to the housing. is there.

According to the connector of the third aspect, since the contact portion has a contact point having a smaller thickness than the remaining portion, there is an advantage that the risk of erroneous contact with the conductor adjacent to the mating conductor can be reduced. .

According to the connector of the fourth aspect, since the contact portion has the chamfered portion at the inner corner thereof, there is an advantage that the risk of erroneous contact with the conductor adjacent to the mating conductor can be reduced.

[Brief description of the drawings]

FIG. 1 is a perspective view of one embodiment of a connector of the present invention.

FIG. 2 is a plan view of the connector of FIG.

FIG. 3 is a front view of the connector of FIG. 1;

FIG. 4 is a side view of the connector of FIG. 1;

FIG. 5 is a sectional view taken along line 5-5 in FIG. 3; However, the contact is not sectioned.

FIG. 6 is a plan view showing one end of the FPC.

FIG. 7 is a side view showing one end of the FPC.

FIG. 8 is a sectional view of a conventional connector.

FIG. 9 is a cross-sectional view of another conventional connector.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Connector 12 Insulated housing 14 Contact 34 Contact receiving cavity 50 Base 52 Contact arm (contact part) 54 Solder tail (connection part) 56, 58 Press-fit part 58a Front side 58b Rear side 60a Contact point 62 Chamfered part

Claims (4)

[Claims] 1. An insulating housing having a plurality of contact receiving cavities, a plurality of stamped contacts, each of the contacts having a base having a press-fit on both sides, and a contact extending from one end of the base. A connector having a connection portion extending from the other end of the base portion, wherein at least one of the press-fitting portions disposed near the connection portion is recessed from a side surface of the base portion, and the connection portion is soldered. Wherein the softened material of the insulating housing penetrates into the recessed press-fit portion. 2. The recessed press-fit portion is formed in a substantially triangular shape, and a front side of the triangle along an insertion direction of the contact has a steeper angle than the side surface of the base. The connector according to claim 1, wherein a rear side of the triangle along the insertion direction has a gentler angle than the front side. 3. The connector according to claim 1, wherein said contact portion has a contact point having a smaller thickness than a remaining portion thereof. 4. The connector according to claim 1, wherein said contact portion has a chamfer at an inner corner thereof.