JP2000215951A - Board-mounting type connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a board-mounting type connector with contacts each having a press-in part to a circuit board, not allowing detachment of the contact pressed and fixed in a housing caused by an opposite contact even if an opposite engaging connector is engaged with the board-mounting type connector by a large force. SOLUTION: This board-mounting type connector 1 has a first connector part 10 and a second connector part 40 for engaging with the first connector part 10. The first connector part 10 has a first housing 20 and first contacts 30 pressed and fixed in the first housing 20, each having a press-in part 33 to a circuit board. The second connector part 40 has a second housing 50 and second contacts 60 fixed in the second housing 50 each for fitting in and contacting with the first contacts 30. The second contacts 60 receive force in the engaging direction of the opposite engaging connector parts 10, 40 caused by the opposite contacts 30, 60.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a board-mounted connector in which a contact press-fitted and fixed in an insulating housing has a press-fit portion into a circuit board.

[0002]

2. Description of the Related Art As a conventional board-mounted connector of this type, for example, a connector shown in FIGS. 9 and 10 is known (see Japanese Patent Publication No. 9-505435).

The surface mount connector 100 is press-fitted and fixed to the housing 110 from the rear side (right side in FIG. 10) of the housing 110, and a contact portion 121 with a mating contact (not shown) and a circuit. The plurality of contacts 120 having the press-fit portions 122 into the substrate 140 and the press-fit portions 122 of the plurality of contacts 120 are connected to the circuit board 140.
And a pressing block 130 for press-fitting and fixing.

Here, the press-fitting portion 12 of each contact 120
Above 2, a pressing shoulder 123 pressed by the pressing block 130 when the press-fit portion 122 is press-fitted and fixed to the circuit board 140 is formed. This pressing shoulder 123
Since the contact 110 is formed slightly wider in the lateral direction than the opening 111 into which the mating contact formed in the housing 110 is inserted, the contact 120 is moved from the rear side of the housing 110 in the direction opposite to the mating contact insertion direction to the housing 110. Press-fit and fixed.

[0005] A mating connector (not shown)
Is fitted to the board-mounted connector 100 from the front side of the housing 110, and the mating contact provided on the mating connector and the contact portion 121 of the contact 120 provided on the board-mounted connector 100 are fitted. Contact.

[0006]

However, in this conventional board-mounted connector 100, the mating connector is fitted to the board-mounted connector 100 with a great force and is pressed into the housing 110. The fixed contact 120 may be pushed by the mating connector and fall out. This is because the contact 120 is press-fitted and fixed to the housing 110 from the rear side of the housing 110 in the direction opposite to the mating direction of the mating connector, so that the contact 120 has a structure that is weak against the pressing force in the mating direction.
For example, when the board-mounted connector 100 is an input / output connector used in an automobile, the contact 1
In order to prevent the contact 20 from falling off, the force for holding the contact 120 into the housing 110 by press fitting may be required to be 6 kgf or more. Conventional board-mounted connector 10
0, contact 12 to housing 110
The press-fit holding force of 0 is not enough.

Accordingly, an object of the present invention is to prevent a contact press-fitted and fixed in a housing from falling off due to a mating contact even if the mating mating connector is mated with a large amount of force to a board mounted connector. It is an object of the present invention to provide a board-mounted connector having no contact and having a press-fit portion into a circuit board.

[0008]

According to the present invention, there is provided a board-mounted connector including an insulating first housing, and a first contact press-fitted into the first housing from the rear side of the first housing. The first contact has a press-fitting fixed portion to the first housing, a contact contact portion located in front of the press-fitting fixing portion, and a press-fitting portion to a circuit board located behind the press-fitting fixing portion. A connector portion, an insulating second housing, and a second contact fixed to the second housing, wherein the second contact fits into the contact contact portion; A mating contact of the mating connector has a mating contact contact portion that mates and contacts from the front side of the second housing in a mating direction opposite to the press-fitting direction of the first contact. Consists of a connector is characterized in that the fitting direction of force by the mating contact and to receive at the second contact.

It is effective if the first housing and the second housing have an integral structure.

The second contact is press-fitted and fixed to the second housing from the front side of the second housing in the fitting direction and abuts on a step formed in the second housing at the time of press-fitting and fixing. It is more effective to have a stop shoulder for preventing the rearward movement of the second contact.

[0011]

Embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view of the board mounted connector of the present invention before the first connector portion and the second connector portion are fitted. FIG. 2 is a perspective view of the board-mounted connector of the present invention in a state where the first connector portion and the second connector portion are fitted. FIG. 3 is an exploded perspective view of the board-mounted connector of the present invention. FIG. 4 is a sectional view taken along line 4-4 in FIG.

Referring to FIGS. 1 to 4, the board-mounted connector 1 includes a first connector section 10 and a second connector section 40 fitted with the first connector section 10.

The first connector section 10 includes an insulating first housing 20 and a first housing 2 attached to the first housing 20.
And a plurality of first contacts 30 which are press-fitted and fixed from the rear side (right side in FIG. 4).

Here, the first housing 20 is formed by molding an insulating resin material.
A pair of a substantially rectangular parallelepiped housing body 21 having a front surface 22, a rear surface 23, an upper surface 24, a lower surface 25, and both side surfaces 26, and a circuit board (not shown) provided on both side surfaces 26 of the housing body 21. And a board mounting unit 28.
The housing main body 21 has a plurality of contact accommodation passages 27 for accommodating the press-fit fixing portion 31 and the contact contact portion 32 of the first contact 30 penetrating from the rear surface 23 to the front surface 22. A portion penetrating the front surface 22 of the contact accommodating passage 27 is an opening 27a through which the second contact 60 of the second connector portion 40 is inserted. On the other hand, each board mounting portion 28 has a through hole 2 through which a mounting screw for mounting the first housing 20 to the circuit board is inserted.
8a are formed.

The first contacts 30 include a first contact group 30A mounted in two rows at a substantially central portion in the longitudinal direction of the first housing 20, and four rows at both ends in the longitudinal direction of the first housing 20. , And a third contact group 30C mounted in four rows between the first contact group 30A and the second contact group 30B of the first housing 20.
The contacts of each contact group 30A, 30B, 30C
It is formed by stamping and bending a metal plate, and is press-fitted into the first housing 20, a contact contact portion 32 located in front of the press-fitted fixed portion 31, and substantially downward at a right angle from the rear of the press-fitted fixed portion 31. It has a press-fitting portion 33 into the circuit board that is bent and positioned behind it. The contact contact portion 32 is composed of an upper elastic contact piece 32a and a lower elastic contact piece 32b that receive the tab-shaped second contact 60, and the press-fit portion 33 is elastically provided in the through hole of the circuit board divided by the central slit. It consists of a pair of elastic contact parts that come into contact. Above each press-fitting portion 33, a pressing shoulder portion 34 which is pressed by a pressing jig (not shown) at the time of press-fitting and fixing the press-fitting portion 33 to the circuit board is formed. Since the pressing shoulder 34 is formed to be slightly wider in the lateral direction than the opening 27 a through which the second contact 60 formed in the first housing 20 is inserted, the first contact 30 is inserted into the second contact 60. It is press-fitted and fixed to the first housing 20 from the rear side of the first housing 20 in the opposite direction. The pressing shoulder 34 of the first contact 30 is inserted into the opening 35a of the tine plate 35, and the press-fit portion 33 is aligned by the tine plate 35 when the press-fit portion 33 is press-fitted and fixed to the circuit board.

Referring to FIGS. 3 to 6, first contact 3
The press-fit fixing portion 31 of 0 will be described in detail. FIG. 5 is a partial cross-sectional view of the board-mounted connector showing the press-fit fixing portion of the first contact, and FIG. 6 is an enlarged view of a portion indicated by an arrow A in FIG.

Each of the press-fitting fixing portions 31 includes a contact contact portion 3
Upper fixed piece portion 31a extending from the second upper elastic contact piece 32a
And a lower fixing piece 31b extending from the lower elastic contact piece 32b of the contact contact portion 32, and a connecting portion 31c connecting the upper fixing piece 31a and the lower fixing piece 31b. Then, the upper fixed piece 31a and the lower fixed piece 31b
A plurality of barbs 31d (reverse stabs) that bite into the side wall of the first housing 20 when pressed into the first housing 20 are formed on one edge of the first housing 20.

Next, a second connector fitting with the first connector portion 10 is formed.
The connector section 40 includes an insulating second housing 50 and a front side of the second housing 50 (see FIG. 4).
And a plurality of second contacts 60 that are press-fitted and fixed from the left side in the drawing). The press-fitting direction of the second contact 60 is the same direction as the fitting direction of the second connector portion 40 to the first connector portion 10 in a direction opposite to the press-fitting direction of the first contact 30. In this embodiment, the second
The contact 60 is press-fitted and fixed in the second housing 50.
It may be fixed to 0.

The second housing 50 is formed by molding an insulating resin material.
2. A substantially rectangular parallelepiped housing main body 51 having a rear surface 53, an upper surface 54, a lower surface 55, and both side surfaces 56, and a pair of substrates to a circuit board (not shown) provided on both side surfaces 56 of the housing main body 51 And a mounting unit 57. A mating connector receiving recess 58 formed inside the housing body 51 and opening to the front surface 52 is formed in the housing body 51, and a plurality of second contact press-fittings penetrating through the rear surface 53 are formed at the bottom of the mating connector receiving recess 58. Opening 59
Are formed. On the other hand, each board mounting portion 57 has the second
A through hole 57a through which a mounting screw for mounting the housing 50 to the circuit board is inserted is formed. As shown in FIG. 2, when the second connector section 40 is fitted to the first connector section 10, each board mounting section 57
0 on each of the board mounting portions 28, and at this time, the through holes 57
a is aligned with the through hole 28a of the board mounting portion 28.

The second contacts 60 are mounted in two rows substantially at the center of the second housing 50 in the longitudinal direction, and are brought into contact with the first contact group 30 A of the first connector section 10. 60A, a second contact group 60B that is attached to both ends of the second housing 50 in the longitudinal direction in four rows, and that fits in contact with the second contact group 30B of the first connector section 10; A third contact group 60C that is mounted in four rows between the first contact group 60A and the second contact group 60B, and that is fitted to the third contact group 30C of the first connector unit 10.
It consists of Each contact group 60A, 60B, 60
The contact C is in the form of a flat tab formed by stamping a metal plate.
Press-fit fixing portion 61, extending rearward of the press-fit fixing portion 61, fitting contact portion 62 that fits into contact with the contact contact portion 32 of the first contact 30, and extends forward of the press-fit fixing portion 61,
A mating contact of a mating connector (not shown) has a mating contact contact portion 63 that mates and contacts from the front side of the second housing 50 in a mating direction opposite to the press-fitting direction of the first contact 30. First contact group 60
The contacts of A and the contacts of the second contact group 60B have the same shape as the contacts for signal transmission, and the contacts of the third contact group 60C are formed as wide contacts for power transmission.

With reference to FIGS. 3, 4, 7, and 8, the press-fit fixing portion 61 of the second contact 60 will be described in detail.
FIG. 7 is a partial cross-sectional view of the board-mounted connector showing the press-fit fixing portion of the second contact, and FIG. 8 is an enlarged view of a portion indicated by an arrow B in FIG.

Each of the press-fit fixing portions 61 is formed so as to protrude from both side edges of the flat plate portion.
Pairs of barbs (barbed) 6 biting into the housing side wall
1a, and a stop shoulder 61b located in front of the barb 61a and protruding from both side edges of the flat plate portion. When the second contact 60 is press-fitted and fixed to the second contact press-fitting opening 59 from the front side of the second housing 50, the stop shoulder portion 61b serves as a step 5 of the second contact press-fitting opening 59.
9a, and prevents the rearward movement of the second contact 60.

As shown in FIGS. 2 and 4, when the first connector portion 10 and the second connector portion 40 are fitted, the first contact 30 and the second contact 60 are brought into contact with each other, and the board mounting type The connector 1 is completed. At this time, when a mating connector (not shown) is mated with the second connector portion 40 from the front side of the second connector portion 40, the mating contact of the mating connector becomes the second contact portion from the front side of the second connector portion 40. The fitting contact portion 63 of the two contact 60 is fitted and in contact. The force in the fitting direction by the mating contact during this fitting does not act on the first contact 30 but is received by the second contact 60. Therefore, even if the mating connector is mated with the board mounted connector 1 with a great force, the first contact 30 press-fitted and fixed to the first housing 20 is disengaged by the force in the mating direction of the mating contact. Never fall off.

As best shown in FIG. 8, the second contact 60 is press-fitted and fixed to the second housing 50 from the front side of the second housing 50 in the fitting direction of the mating connector. A stop shoulder 61b that abuts against a step 59a formed in the second housing 50 at the time of press-fitting to prevent the second contact 60 from moving rearward.
Therefore, when the mating connector is mated in the mating direction and the mating contact comes into mating contact with the second contact 60, the second contact 60 is moved rearward by the force in the mating direction of the mating contact. Does not move, and all the forces in the fitting direction by the mating contact are transferred to the second contact 60.
And the first contact 30 is reliably prevented from falling off due to the force of the mating contact in the fitting direction. And since the 2nd contact 60 is press-fitted and fixed to the 2nd housing 50 instead of insert molding, the equipment cost for manufacture is low, and
Expensive plating such as gold plating can be selectively and freely performed on the second contact 60.

In the present embodiment, the first housing 20 and the second housing 50 have been described as separate members. However, the first housing 20 and the second housing 50 may have an integral structure. Good. In this case, the number of parts is reduced, and the manufacturing cost is further reduced.

[0026]

According to the connector of the first aspect, the force in the mating direction of the mating contact is received by the second contact that mates with the first contact. Even if the first contact is fitted to the board mounted connector with a large force, the first contact press-fitted and fixed to the first housing does not fall off due to the force in the mating direction of the mating contact. Can provide a board-mounted connector having a press-fit portion into a circuit board.

According to the second aspect of the present invention, the first housing to which the first contact is fixed by press-fitting and the second housing to which the second contact is fixed are integrally formed. In addition to the effect of the board-mounted connector according to the first aspect, the number of components is reduced, and the manufacturing cost is further reduced.

According to the third aspect of the present invention, the second contact is press-fitted and fixed to the second housing from the front side of the second housing in the fitting direction of the mating connector. And a stop shoulder that abuts against a step formed in the second housing when press-fitting and is fixed to prevent the rearward movement of the second contact. In addition to the effect, when the mating connector is mated in the mating direction and the mating contact makes mating contact with the second contact, the second contact is moved rearward by the force in the mating direction of the mating contact. The second contact can receive all the force in the mating direction of the mating contact without moving, and the first contact comes off due to the force in the mating direction of the mating contact. Put away that there is an effect that can be reliably prevented. Since the second contact is press-fitted and fixed to the second housing instead of the insert mold, the equipment cost for manufacturing is low, and the second contact is selectively and freely expensive such as gold plating. This has the effect of being able to perform plating.

[Brief description of the drawings]

FIG. 1 is a perspective view of a board mounted connector of the present invention before a first connector portion and a second connector portion are fitted.

FIG. 2 is a perspective view of the board mounted connector of the present invention in a state where a first connector portion and a second connector portion are fitted.

FIG. 3 is an exploded perspective view of the board-mounted connector of the present invention.

FIG. 4 is a sectional view taken along line 4-4 in FIG. 2;

FIG. 5 is a partial cross-sectional view of the board-mounted connector showing a press-fit fixing portion of the first contact.

FIG. 6 is an enlarged view of a portion indicated by an arrow A in FIG. 5;

FIG. 7 is a partial cross-sectional view of the board-mounted connector showing a press-fit fixing portion of the second contact.

FIG. 8 is an enlarged view of a portion indicated by an arrow B in FIG. 7;

FIG. 9 is a perspective view of a conventional board-mounted connector in which a housing, a pressing block, and a circuit board are separately shown.

FIG. 10 is a longitudinal sectional view of the board-mounted connector shown in FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Board mounted connector 10 1st connector part 20 1st housing 30 1st contact 31 press-fit fixing part 32 contact contact part 33 press-fit part 40 2nd connector part 50 2nd housing 59a step part 60 2nd contact 61b stop shoulder part 62 Mating contact part 63 Mating contact contact part

Claims (3)

[Claims] An insulating first housing, and a first contact press-fitted and fixed to the first housing from a rear side of the first housing, wherein the first contact is connected to the first housing. A first connector portion having a press-fit fixing portion, a contact contact portion located in front of the press-fit fixing portion, and a press-fit portion into a circuit board located behind the press-fit fixing portion; an insulating second housing; A second contact fixed to the second housing, the second contact comprising:
A mating contact portion that mates with the contact contact portion, and a mating contact of the mating connector mates with a mating contact from the front side of the second housing in a mating direction opposite to the press-fitting direction of the first contact. And a second connector portion having a mating contact contact portion that engages with the mating contact.
A board-mounted connector characterized by receiving by contact. 2. The board-mounted connector according to claim 1, wherein the first housing and the second housing have an integral structure. 3. The second contact is press-fitted and fixed to the second housing from the front side of the second housing in the fitting direction, and the second contact abuts on a step formed in the second housing at the time of press-fitting and fixing. The board-mounted connector according to claim 1, further comprising a stop shoulder that comes into contact with the second contact and prevents the rearward movement of the second contact.