JP3405943B2 - connector - Google Patents

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-fitting 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 connector. A typical press-fitting structure is disclosed in Japanese Utility Model Laid-Open No. 48-32881 as shown in FIG. The base portion 102 of the contact 100 is provided with two press-fitting protrusions 104 symmetrically arranged on each side surface thereof.
The contact 100 is the cavity 11 of the housing 110.
2 is inserted into the cavity 11,
2 bite into the inner wall, 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 U.S. patent, a pair of press-fitting protrusions 154 and 156 are provided on both sides of the base portion 152 of the contact 150 asymmetrically with respect to the axis (dotted line) of the contact 150. 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 made 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 scraped off by the press-fitting projection when the contact is inserted, it is necessary to form the inner wall to a certain extent thick. Therefore, if this press-fitting structure is applied when the axial direction of the contacts is parallel to the board surface on which the connector is mounted, it becomes difficult to reduce the height of the connector. Further, in the latter press-fitting structure, if the press-fitting structure is applied to the board-mounted connector, the height of the connector can be made lower than in the former case. However, it is difficult to make a connector with a lower profile.

Therefore, it is an object of the present invention 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 comprises an insulative 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 portion, a contact portion extending from one end of the base portion, and a connection portion extending from the other end of the base portion, at least one of the press-fitting portions arranged in the vicinity of the connection portion is a side surface of the base portion. It is recessed, and when the connection portion is soldered, the softened material of the insulating housing enters the recessed press-fitting portion.

Preferably, the recessed press-fitting portion is formed in a substantially triangular shape, and a front side of the triangle along the insertion direction of the contact has a steeper angle than the side surface of the base portion, A 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 has a contact point having a plate thickness smaller than that of the remaining portion.

[0009] Preferably, the contact portion is configured to have a chamfered portion at an inner corner thereof.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION Preferred embodiments of the connector of the present invention will be described in detail below 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. 3 shows FIG.
3 is a front view of the connector of FIG. FIG. 4 is a side view of the connector of FIG. FIG. 5 is a cross-sectional view taken along line 5-5 of FIG. However, the contacts are not cross-sectioned. Figure 6
[FIG. 3] is a plan view showing one end of an FPC. Figure 7 shows the FPC
FIG. 3 is a side view showing one end of FIG.

Referring to FIGS. 1 to 4, the connector 1
0 is a substantially rectangular parallelepiped insulating housing 12 and a housing 1
A plurality of (six in the present embodiment) conductive contacts 14 arranged inside the housing 2 and a pair of solder pegs 16 arranged on both sides of the housing 12 are provided. The housing 12 is
It is manufactured from a suitable thermoplastic material such as 4-6 nylon (polyamide resin) and is formed by top wall 20, bottom wall 22, front wall 24, rear wall 26 and side walls 28, 30. Upper wall 20
At the front end and front wall 24 of the FPC (flexible printed circuit board) 8
0 (see FIGS. 6 and 7) for receiving one end 3
2 is formed. The FPC 80 has an insulating coating 84,
The insulating coating 84 includes a plurality of conductors 82 and 82 ′ and a reinforcing member 86. The conductors 82 and 82 'are the FPC8.
It is exposed at one end of 0. A plurality (six in this embodiment) of 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 of the 6 is secured within a respective cavity 36 located adjacent the respective side walls 28, 30.

Referring to FIG. 5, each contact 14 is
It is manufactured by punching a suitable spring metal plate such as a copper alloy. The contacts 14 are arranged in the housing 12 at a pitch of 0.5 mm (center interval). 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 surface mount connection. Base 50
Has on both sides thereof press-fitting portions 56, 58 which are inserted between the inner walls 38, 40 of the cavity 34 of the housing 12. One press-fitting portion located on the upper side of the base portion 50 has the protrusion 5
Formed as 6. The other press-fitting portion located below the base portion 50 is formed as a substantially triangular recess 58. The recess 58 has a steep front side 58a and a front side 58a.
And a side 58b on the rear side which is gentler than The steep front side 58a resists the force tending to move 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 the contact 14 is assembled within the housing 12. With such a structure, that is, at least one of the press-fitting portions is recessed, it is possible to realize a low-profile connector having a height of 1.2 mm, for example.

Each of the contact arms 52, 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 edge 60 and chamfer 62 allow F
When the PC 80 is inserted into the opening 32 of the housing 12, the risk of one contact 14 coming into contact with the 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 come into contact with is relatively small, the risk of contact with a conductor that is not intended to contact 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 sharp edges 58a, which enhances the retention of the contacts 14 within the housing 12.

Although only one embodiment of the present invention has been described in detail above, 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 it may be a male contact. The connection is
It may be a type that is inserted into a through hole of a board on which the connector 10 is mounted. If the two press-fitting portions are equidistant from the connecting portion, both 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 in addition to the FPC conductor.

[0016]

According to the connector of the first aspect, at least one of the press-fitting portions arranged in the vicinity of the connecting portion is recessed from the side surface of the base portion, and the insulating housing is provided when the connecting portion is soldered. Since the softened material enters into the depressed 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 depressed press-fitting portion is formed in a substantially triangular shape, and the front side of the triangle along the insertion direction of the contact has a steeper angle than the side surface of the base portion. Since the side on the rear side of the triangle along the insertion direction has a gentler angle than the side surface of the base, there is an advantage that a connector can be easily inserted into the housing and a contact holding force with respect to the housing is high. is there.

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

[Brief description of drawings]

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

2 is a plan view of the connector of FIG. 1. FIG.

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

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

5 is a cross-sectional view taken along line 5-5 of FIG. However, the contacts are not cross-sectioned.

FIG. 6 is a plan view showing one end of an 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]

10 connectors 12 Insulated housing 14 contacts 34 Contact receiving cavity 50 base 52 Contact arm (contact part) 54 Solder tail (connection part) 56,58 Press-fitting section 58a Front side 58b rear side 60a contact point 62 Chamfer

Continuation of front page (56) Reference JP-A-7-211377 (JP, A) JP-A-4-163879 (JP, A) JP-A-5-251123 (JP, A) JP-A-7-326417 (JP , A) JP-A-11-31562 (JP, A) JP-A-11-214116 (JP, A) Actual development 4-61774 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB) Name) H01R 13/40 H01R 23/02 H01R 9/09

Claims (4)

(57) [Claims] 1. A comprising an insulating housing having a plurality of contact receiving cavities, and a plurality of contacts stamped, each of said contacts includes a base having a press-fit portion on both sides, extending from the front end of the base portion possess a contact portion and a connection portion extending from an end after the base, one of the press-in portion
In the connector recessed from the side surface of the base portion, the connecting portion is located at the recessed press-fitting portion of the base portion.
Connector which extends rearward from the rear end on the side and the softened material of the insulating housing enters the recessed press-fitting portion when the connecting portion is soldered. 2. The recessed press-fitting portion is formed in a substantially triangular shape, and a front side of the triangle along the insertion direction of the contact has a steeper angle than the side surface of the base portion, The connector according to claim 1, wherein a rear side of the triangle along the insertion direction has a gentler angle than that of the front side. 3. The connector according to claim 1, wherein the contact portion has a contact point having a plate thickness smaller than that of the remaining portion. 4. The connector according to claim 1, wherein the contact portion has a chamfered portion at an inner corner thereof.