JPH05335059A - Surface mounting connector - Google Patents

Abstract

PURPOSE:To enable a change in board spacing to be easily coped with, and ensure proper soldering to a multipolar board by forming a connector with male and female connectors in such a way that at least one of the male and female connectors is separated into a base member and a housing member and then molded to be integral with each other. CONSTITUTION:At least one of male and female contacts having coupling sections engaged with each other and a plurality of contacts for mutual connection at the coupling sections, for example, a male contact 10 is divided into and formed with a base member 11 having contacts 13 and soldered to a board, and a housing member 12 having a coupling section 14. In this case, a plurality of types of materials having different height are prepared as the member 11, and common specification is applied to the member 12. Thus, different board spacing can be easily coped with by changing total height correspondingly. Also, a multipolar surface mounting connector free from warp and defective soldering can be provided, when a plurality of the short members 11 free from warp and the common multipolar member 12 are used.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a connector, and more particularly to a connector suitable as a surface mount type (SMT type) connector.

[0002]

2. Description of the Related Art SMT type connectors, in which the connector is directly soldered onto a printed circuit board, are widely used because they can increase the mounting density. However, in a stacking connector in which boards are stacked at a predetermined interval, a through hole type in which a contact is inserted into a hole formed in a printed board is generally used. The reason is that when the distance between the boards is different, it can be dealt with by inserting a spacer having a thickness corresponding to the distance between the boards between the board and the connector. This means that when the SMT type connector is used as the stacking connector, it is necessary to prepare connectors having different heights depending on the board interval.

Further, in the SMT type connector, a multi-pole connector having a large number of contacts causes a problem of warpage. In general, when an SMT connector is soldered onto a board, it is simply placed by weight without applying any special pressure. Therefore, when warping occurs, a gap is created between the board and the contact, and soldering failure occurs. It may occur.

[0004]

It is an object of the present invention to provide a connector which can easily cope with a change in the distance between boards when the SMT type connector is used as a stacking connector based on the above-mentioned awareness of the problems of the SMT type connector. With the goal. It is another object of the present invention to solve the problem of warpage in a multi-pole SMT type connector and to obtain a connector that can reliably solder to a board even if it has multiple poles.

[0005]

SUMMARY OF THE INVENTION The present invention relates to a male and female connector having male and female fitting portions that are fitted to each other, and a plurality of contacts that are in contact with each other in the fitted state are provided in the fitting portion. Is characterized in that at least one of them is divided into a base member having a contact and soldered on a substrate and a housing member having the fitting portion, and these are combined to form a connector.

According to the surface mount connector of this division structure, a plurality of types having different heights are prepared as the base member, and the housing member has a common specification.
The combined height of the base member and the housing member having the common specifications can be changed according to the board interval, and different board intervals can be easily dealt with.

Further, according to the surface mount connector of this division structure, the base member is made up of a plurality of base members having a small number of poles which are continuously fixed on the substrate, and a plurality of base members are provided to the plurality of base members. One housing member can be used. Therefore, the plurality of base members should be short so that the problem of warpage does not occur, and by using a common multipolar housing member for the plurality of base members,
It is possible to obtain a substantially multipolar surface mount connector without causing problems such as warpage and poor soldering.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described below with reference to illustrated embodiments. 1 to 5 show the present invention for stacking S
This is a preferred embodiment when used as an MT type connector. As shown in FIGS. 3 to 5, the stacking connector is a connector that is between the boards PB to be stacked and connects terminals on the adjacent boards PB. The plug (male) side SMT side connector 10 is directly soldered to one of the facing surfaces of the adjacent boards PB, and the male SMT side connector 10 is soldered to the other side.
Receptacle (female) side SMT connected to connector 10
The mold connector 20 is likewise directly soldered.

The male SMT connector 10 and the female SMT connector 20 of the present invention are both composed of base members 11 and 21 and housing members 12 and 22. The base members 11 and 21 have contacts 13 and 23.
The housing members 12 and 22 have mating portions 14 and 24 for mating with each other.

Housing member 1 of male SMT connector 10
The fitting portion 14 formed in 2 is composed of a pair of outer walls 14a and a ridge 14b positioned with a space between the pair of outer walls 14a, and on both side surfaces of the ridge 14b,
A large number of contact insertion grooves 15 are formed at regular intervals. The housing member 12 is a common component of the plurality of male SMT connectors 10.

On the other hand, the base member 11 is the substrate PB.
A plurality of types having bases 16 having different heights H are prepared in accordance with the intervals. In the embodiment, FIGS.
A base member 11 having a base 16A with a height of H1
A, a base 16B having the same height as H2 (H2> H1) in FIG.
The base member 11B having the above is drawn. Base 16
Is inserted into a recess 17 formed in the housing member 12, and the contact 13 is press-fitted into a press-fitting hole 18 formed in the housing member 12. The contact 13 is provided with a protrusion 13 a for increasing the press-fitting pressure with the press-fitting hole 18. This base 16 of the contact 13 (16A, 16A
The protrusion length s from B) is constant regardless of the base members 11A and 11B, and the large number of contacts 13 press-fitted into the press-fitting holes 18 fit into the contact insertion grooves 15 of the housing member 12, respectively. The contact 13 is bent in an L shape on the bottom surface of the base 16 to form an SMT type connector. Also, the base 1 of the base member 11
Fixing fittings 19 are press-fitted into both ends of the fitting 6.

Housing member 2 of female SMT connector 20
The fitting portion 24 formed in 2 fits into the fitting portion 14 of the base member 11, and has a pair of insertion walls 24a fitted inside the pair of outer walls 14a. 24
A large number of contact insertion grooves 25 are formed at regular intervals on the respective opposing wall surfaces of a. The housing member 22 is a common component of the plurality of male SMT connectors 10.

On the other hand, the base member 21 is the substrate PB.
A plurality of types having bases 26 having different heights T are prepared in accordance with the stacking intervals. In the example, FIG.
FIG. 4 shows a base member 2 having a base 26A having a height T1.
1A, a base 26 having the same height T2 (T2> T1) in FIG.
A base member 21B having B is depicted. Base 26
Fits into the recess 17 of the housing member 22, and the contact 23 serves as the contact insertion groove 2 of the housing member 22.
5 is inserted. The contact 23 is the contact 13
Similarly, the bottom surface of the base 16 is bent in an L shape to form an SMT type connector. The tip of the contact is bent inward in a U-shape,
And a contact portion 23 a with the contact point 3 is formed. The protrusion length p of the contact 23 from the base 26 (26A, 26B) is
It is constant regardless of the base members 21A and 21B, and in the contact insertion groove 25 of the housing member 22 of common specifications,
It is set so that a certain length is located. Fixing fittings 29 are press-fitted at both ends of the base 26 of the base member 21.

The connector of the above construction is used as follows. That is, FIG. 3 shows the distance R1 between the adjacent substrates PB.
Is short, the male SMT connector 10 is composed of a combination of a low-height base member 11A and a common housing member 12, and the female SMT connector 20 is composed of a combination of a low-height base member 21A and a common housing member 22. Has been done. On the other hand, FIG. 4 shows the case where the interval R2 between the adjacent boards PB is long, and the male SMT connector 10 is constituted by a combination of the base member 11B having a high height and the common housing member 12, and the female SMT connector.
The connector 20 is composed of a combination of a base member 21A having a low height and a common housing member 22.
The base member 11B is the only component that differs between FIG. 3 and FIG. That is, the base member 1 of the male SMT connector 10
Only by changing 1B, the combined height of the base member 11B and the housing member 12 can be changed to cope with the difference in the distance between the substrates PB.

FIG. 5 shows an embodiment in which the combination on the female SMT connector 20 side is changed to cope with a large space between the boards PB. That is, the female SMT connector 20 is composed of a combination of a high-height base member 21B and a common housing member 22, and the male SMT connector 10 side is
Similar to FIG. 3, the base member 11A having a low height and the common housing member 12 are combined.

Both the male SMT connector 10 and the female SMT connector 20 have a high base member 11B and a high base member 21.
If B is used, it is possible to cope with a larger space between the substrates PB. Of course, the base member 11 of the male SMT connector 10 and the base member 21 of the female SMT connector 20 can be provided with a plurality of types having different heights to cope with different board intervals. On the contrary, even if one of the male SMT connector 10 and the female SMT connector 20 is a conventional type (integrated type) which is not the split type according to the present invention, it is possible to cope with different board intervals.

6 to 8 show another embodiment of the present invention. In this embodiment, the present invention is applied to a multi-pole connector to solve the problem of connector warpage. FIG. 6 shows the problem of the warp and the principle of the present invention. In the case where the connector C1 has a long length in the upper part of the figure, when the warp occurs in the connector C1, the gap between the connector C1 and the board PB is shown. ,
A gap g1 that exceeds the allowable limit is generated, and this gap g1 may cause soldering failure. According to the present invention, in order to prevent the occurrence of soldering failure due to the warp of the connector, the connector C2 is divided into shorter parts so that the gap g2 with the board PB is within an allowable range even if the individual connector C2 is warped. It is the one. And, the present invention does not divide all of the connector into short parts, but divides only the base member to reduce the number of poles, and the housing member retains the multi-pole common to the plurality of divided base members. There are features.

7 and 8 show the plug (male) side SMT.
In the embodiment in which the present invention is applied to the mold connector 10M, the base member is composed of two small pole base members 11M for one multipole housing member 12M. The configurations of the low-polarity base member 11M and the multi-polar housing member 12M themselves are the same as those described in the embodiments of FIGS. 1 to 5, and corresponding parts bear the same reference numerals. The two small pole base members 11M are connected by a connecting fitting 19B that is press-fitted into the base 16, and in this connected state, the substrate P
Soldered onto B. On the board PB, terminals 13c to which the contacts 13 are soldered and connection lands 19c to which the fixtures 19 and 19B are soldered are formed.

As shown in FIG. 8, this male SMT connector 10M is directly soldered onto the board PB in a state where the two small pole base members 11M are connected by the fixing fittings 19B. Then, since the number of poles of the small pole base member 11M is reduced to half the number of poles of the multipole housing member 12M, the influence of the warp of the small pole base member 11M is small, and therefore soldering failure is unlikely to occur. The multipolar housing member 12M is
After this soldering is completed, the two small pole base members 11
Bind to M. Although it is possible to pre-join the two small pole base members 11M and the multipolar housing member 12M,
Since the influence of the warp of the multipolar housing member 12M may affect the low polarity base member 11M, the low polarity base member 11
It is preferable to join the multipolar housing member 12M after the soldering of M is completed.

7 and 8 show an embodiment of the male SMT connector 10M, the present invention can be similarly applied to a female SMT connector.

[0021]

As described above, the SMT type connector of the present invention is divided into the base member having contacts and soldered on the substrate, and the housing member having the fitting portion for the mating connector. Since the both are combined to form the SMT type connector, the combination of the base member and the housing member can be used as a stacking connector which can easily cope with a change in the distance between the substrates.
In addition, by dividing the base member with respect to the housing member with a smaller number of poles, it is possible to eliminate a soldering defect due to the warp of the contact.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment in which the present invention is applied to a plug (male) side connector in a separated state of a base member and a housing member.

FIG. 2 is a perspective view showing an embodiment in which the present invention is applied to a receptacle (female) side connector in a separated state of a base member and a housing member.

FIG. 3 is a cross-sectional view of the plug side connector and the receptacle side connector according to the present invention in a coupled state.

FIG. 4 is a cross-sectional view similar to FIG. 3, in which the combined height of the plug-side connector and the receptacle-side connector is different.

FIG. 5 is a sectional view similar to FIGS. 3 and 4, except that the combined height of the plug-side connector and the receptacle-side connector is different.

FIG. 6 is a diagram showing a problem of warpage of a multipolar connector and a principle of the present invention.

FIG. 7 is a perspective view showing an embodiment in which the present invention is applied to a plug (male) side connector of a multipolar connector, in a state where a pair of base members and a common housing member are separated.

8 is a perspective view showing a state in which the pair of base members of FIG. 7 are combined.

[Explanation of symbols]

 10 10A 10B Male SMT connector 11 11A 11B Base member 11M Small pole base member 12 12A 12B Housing member 12M Multipolar housing member 13 Contact 14 Fitting part 15 Contact insertion groove 16 Base 18 Press-fit hole 20 20A 20B Female SMT connector 21 Base member 22 Housing Member 23 Contact 24 Fitting Part 25 Contact Insertion Groove 26 Base PB Board

Claims (4)

[Claims] 1. A male-female fitting portion to be fitted to each other,
A male-female connector in which a plurality of contacts contacting each other in a fitted state are provided in the fitting portion, wherein at least one of the male and female connectors is a base member having the contacts and soldered on a substrate, A surface mount connector, characterized in that the connector is formed by being divided into a housing member having a mating portion, and the two are joined to form a connector. 2. The connector according to claim 1, wherein a plurality of types of base members having different heights are prepared, and one of the plurality of types of base members is selectively used for a housing member having a common specification. 3. The connector according to claim 2, wherein a combined height of the base member and the housing member is determined according to a distance between adjacent substrates. 4. The connector according to claim 1, wherein the base member is divided into a plurality of base members that are continuously fixed to the substrate with respect to one housing member.