JPH07211409A - Connector surface mounting mechanism - Google Patents

Abstract

PURPOSE:To push out cream solder and remove bias by holding up a connector terminal, and hooking the end of a board with the hook of a connector, and rotating the connector with this as a fulcrum, and setting the lock part on connector side in the locking hole on board side. CONSTITUTION:A board 13 is provided with a cut 17 for mounting a connector 2, and a locking hole 16 is formed between this and a conductive part 14. Here, the width d2 of the cut 17 is made the same as the width of the hook 6 of an insulating housing 5, and the width d1 of the locking hole 16 is also made same, whereby it is made equal to the width of the lock 7 of the housing 5. The connector 2 is provided with a housing 5 and a plurality of thin-plate-shaped terminals 3 projecting here, and at this tip, a junction part 4 contacting by face with each conductive part 14 of the board 13 is formed. To incorporate the connector 2, the cut 17 is hooked with a hook 6 while holding up the terminal 3, and the connector 3 is brought down to bring the lock part 7 close to locking hole 16, and the junction part 4 is brought close to a conductive part 14 where cream solder 15 is applied.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a connector surface mounting mechanism,
In particular, the present invention relates to a mounting mechanism of an SMT (surface mounting technology) compatible connector.

[0002]

2. Description of the Related Art As a surface mount type connector of this type,
Known is a perspective view in FIG. 8 and a side view in FIG. This is a surface mounting method. First, cream solder 105 for reflow is applied to the pad surface of the substrate 102, and the connection surface 107 of the connector 103 is fixed to the pad surface of the substrate 102 for connection. At this time, the fixing piece of the connector 103 is aligned with the board hole and positioned, and fixed with the screw 106. After that, the cream solder 105 is melted in a reflow furnace to be soldered.

[0003] In addition, as shown in FIG.
The one disclosed in Japanese Patent No. 8 is such that cream solder is applied to the pad surface 206 on the substrate 201 and the pin 204
The hooking piece 20 is provided at the bottom of the housing 203 where the (electrode) is exposed.
7, the hook piece 207 is slid and inserted into the substrate 201 from one side, and at this time, the pin 204 is slid and brought into contact with the pad 206 coated with cream solder.

[0004]

However, in such a prior art, after the connector is positioned on the circuit board, both are usually fixed and fixed prior to soldering in a reflow furnace or the like. Is.

For example, in the former configuration of the above, a fixing screw is used, as shown in FIG.
Engage with. However, this tightening work causes the connector 103 to rotate together with the screw 106 as an axis, and this rotation causes the terminal 104 to move in position and the connecting surface 107 to shift in position, so that a uniform amount of cream solder is set. There is a risk of causing a serious problem that the reliability of the electrical connection is lowered because the position is displaced and thus the amount of solder is varied.

Also, in the latter case, in the structure of sliding in one direction, since the housing advances while pushing out the cream solder, the cream solder is scraped or pushed to collect in one direction, and further, the cream solder is pushed from the pad. Was extruded to cause an undesirable state such as staying on the insulating portion. These lead to inconvenience such as insufficient amount of solder and make reliable soldering difficult, which not only causes defective products but also significantly impairs workability in the field.

The present invention has been made in order to solve the above problems and drawbacks, and its purpose is to prevent the positional deviation between the board and the terminal during the assembly process of the connector, and to perform the reliability easily and easily. The present invention provides a connector surface mounting mechanism that realizes high electrical connection at low cost.

[0008]

In order to achieve the above object, a connector surface mounting mechanism according to the present invention comprises a board having a pad surface for electrical connection on which a solder material is placed, and a board protruding from an insulating housing. A connector provided with at least one terminal having a connecting surface at a tip thereof, the connector being mounted on the board to connect the insulating housing to the pad surface, A notch is provided at an edge of the housing mounting position, and a lock locking hole is provided at a position of the housing mounting position on the substrate, which is apart from the notch, and corresponds to the notch at the housing bottom of the connector. A hook portion that fits into the cutout portion is provided at a position, and the lock locking hole is pressed by pressing at a position corresponding to the lock hole at the housing bottom portion of the connector. It is characterized in that which is configured by providing a lock portion fitted.

[0009]

In the connector surface mounting mechanism according to the present invention, the hook portion of the connector is hooked on the cutout portion of the end portion of the board with the terminal being lifted upward, and the connector is rotated about the hook portion as a fulcrum. As it goes down, the lock part on the connector side and the lock locking hole on the board side are fitted to lock the connector to the board and the joint part of the terminal is joined to the conductive part of the board. The terminals can be bonded to the pad surface without the cream solder being pushed out or biased due to sliding of the connector.

Further, the lock portion and the lock engaging hole act so as to prevent the connector from being displaced in the X direction and loose in the vertical direction (Z direction). Further, the deviation in the Y direction is remarkably improved by the action of the hook portion and the notch portion.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will now be described with reference to FIGS.
It will be described with reference to FIG. FIG. 1 is a perspective view showing a basic form of a connector surface mounting mechanism according to the present invention. In the figure, 13 is a substrate, on the surface of which a conductive portion (pad surface) 14 for electrical connection with the joint portion 4 of the connector 2 is formed. On the surface of the conductive portion 14, cream solder 1
5 is applied.

The board 13 is provided with a notch 17 at the edge where the connector 2 is mounted, and the notch 17 and the conductive portion 14 are provided.
A lock engagement hole 16 is provided at a position between and. Notch 1
The width d2 of 7 is made substantially equal to the width of the hooking portion 6 of the housing 5 which will be described later. Similarly, the width d1 of the lock engaging hole 16 is made substantially equal to the width of the lock portion 7 of the housing 5 described later.

The connector 2 has an insulating housing 5 and a plurality of thin plate-like terminals 3 projecting from the insulating housing 5. Terminal 3
Are arranged at a plurality of vertical and horizontal positions on the rear surface of the housing 5, project from the housing 5 in parallel to the board 13, and are bent in a crank shape toward the board side. Further, the tip end portion is in contact with each conductive portion 14 of the board 13. It has the joining part 4 which does.

On the bottom surface 2A of the housing 5, a hook portion 6 is provided at the edge. The hook portion 6 is fitted in the notch portion 17 of the substrate 13, and at this time, the lock portion 7 having the inclined surface 7A is provided at the position on the bottom surface 2A corresponding to the lock engaging hole 16.

When assembling the connector, first, referring to FIG.
As shown in FIG.
The hooking portion 6 of the connector 2 is hooked on the notch 17 and the connector 2 is tilted in the direction indicated by the thick arrow in the figure. As a result, the lock portion 7 approaches the lock engaging hole 16, and the joint portion 4 approaches the conductive portion 14 to which the cream solder 15 is applied. However, until this point, the joint 4 and the cream solder 1
There is no contact with the conductive part 14 coated with 5.

When the bottom surface 2A of the connector 2 comes into close contact with the board 13 in due course, the lock portion 7 is completely fitted into the lock engagement hole 16, and the horizontal surface of the lock portion 7 comes into close contact with the back surface of the board 13 to secure the connector 2 in place. Firmly locked to the substrate 13.

At this time, the joint portion 14 of the terminal is joined to the conductive portion 14 of the substrate 13, and as shown in FIG. 3, the cream solder 15 contacts the joint portion 14 evenly and without excess or deficiency. Therefore, the soldering of the connector to the substrate can be completed and the next soldering step can be performed without causing any inconvenience such as the cream solder being biased to one side or being pushed out and protruding from the pad surface.

FIG. 4 is a perspective view of another embodiment of the connector surface mounting mechanism according to the present invention. The configuration of FIG. 1 and the configuration of FIG. 1 are different only in the locking means, that is, the lock portion 7, and the other configurations are the same. In FIG. 4, a bifurcated shape having excellent flexibility is used as the locking means.

In the lock portion 7 having a large cutout 7A in the central portion and consisting of two locking projecting legs 7C, a pair of locking projecting legs 7C has a sloped surface 7B and a locking surface 7D. When the lock portion 7 is pushed from above into the lock engaging hole 16 provided in the substrate 13, as shown in FIG.
The inclined surface 7B of the locking projection leg 7C comes into contact with 6A, and the force W for inward deformation acts to deform the locking projection leg 7C and push it into the lock locking hole 16. When pushed further downward, as shown in FIG. 7, the locking surface 7D projects to the back side of the board 13 and restores from the deformation, and the locking surface 7D and the back side of the board 13 lock the connector 2.

FIG. 5 shows still another example of the lock portion 7.
The column-shaped lock portion 7 having the slit 7A in the center is deformed by being pushed into the circular lock engagement hole 16, but protrudes to the back side of the substrate 13 and is restored from the deformation, and the engagement surface 7D and the substrate 13 are separated. The connector 2 is locked on the back side. Since these are locked with one touch, the workability is significantly improved.

As described above, in the process of mounting the connector on the substrate, in the structure according to the present invention, the cream solder placed on the conductive portion does not come into contact with the joint portion, so that the cream solder is offset. The problem of being pushed out of the pad surface does not occur.

[0022]

As described above, in the connector surface mounting mechanism according to the present invention, the hook portion of the connector is hooked on the end portion of the board while the terminal of the connector is lifted upward.
The connector is rotated around the hook as a fulcrum to bring it down on the board, and the connector-side lock portion and the board-side lock locking hole are fitted to lock the connector on the board.
Since the joint part of the terminal is joined to the conductive part of the board, there is no contact between the joint part of the terminal and the conductive part of the board in a series of steps, so cream solder is not pushed out or misaligned due to sliding etc. Can be engaged with.

In other words, the inconvenience of the applied cream solder being offset, moved, or removed from the pad surface does not occur. As a result, reliable soldering is possible, and the reliability of the circuit can be improved by realizing reliable electrical connection.

Further, in fixing the connector, it is extremely easy to carry out by one-touch work, and the defect occurrence rate can be reduced, and there is an advantage that workability is greatly improved because there is no need for screwing. Reduction can be realized.

[Brief description of drawings]

FIG. 1 is a perspective view of an embodiment of a connector surface mounting mechanism according to the present invention.

2 is a side view of the connector surface mounting mechanism of FIG. 1. FIG.

FIG. 3 is a side view of the connector surface mounting mechanism of FIG. 2 when fitted.

FIG. 4 is a perspective view of an essential part of another embodiment of the connector surface mounting mechanism according to the present invention.

FIG. 5 is a perspective view of an essential part of a connector surface mounting mechanism according to still another embodiment of the present invention.

6 is an explanatory view of a fitting portion of the connector surface mounting mechanism of FIG.

7 is an explanatory view of a fitting portion of the connector surface mounting mechanism of FIG.

FIG. 8 is a perspective view of a conventional surface mount connector.

9 is a side view of FIG.

FIG. 10 is another conventional surface mount type connector, in which (A) is a perspective view and (B) is a side view.

[Explanation of symbols]

 1 Connector surface mounting mechanism 2 Connector 2A Bottom surface 3 Terminal 4 Joining part 5 Housing 6 Hooking part 7 Lock part 7A Slope 8 Fixing piece 8A Fixing hole 13 Board 14 Conductive part (Pad surface) 15 Cream solder 16 Lock locking hole 17 Notch

Claims (1)

[Claims] 1. A substrate having a pad surface for electrical connection on which a solder material is placed and having at least one terminal projecting from an insulating housing and having a connecting surface at a tip thereof. A connector configured to mount a housing on the board and connect the terminals to the pad surface, wherein a notch is provided at an edge of the housing mounting position on the board, and the housing is mounted on the board. A lock engaging hole is provided at a position away from the cutout portion, and a hook portion that fits into the cutout portion is provided at a position corresponding to the cutout portion of the housing bottom portion of the connector, and the housing bottom portion of the connector is provided. 2. A connector surface mounting mechanism, characterized in that a lock portion that fits into the lock engaging hole by pressing is provided at a position corresponding to the lock engaging hole. .