JP2990071B2 - Jack mounting structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a jack mounting structure, and more particularly to a jack mounting structure on a printed circuit board.

[0002]

2. Description of the Related Art Conventionally, this type of jack mounting structure includes a printed circuit board surface mount type as a first conventional example as shown in FIGS. 4 and 5, and a second type as shown in FIGS. Of the related art is a printed circuit board insertion mounting type.

First, a printed circuit board surface mounting type as a first conventional example will be described. Referring to FIG. 4, the jack includes a jack main body 1, a plug insertion port 1-3 for inserting a power plug and the like, and a terminal 1- for electrical connection.
And 2. Referring to FIG. 5, a printed circuit board 3 on which a jack is mounted is provided with a wiring conductor 3-2 on the jack mounting surface. This wiring conductor 3-2
Are arranged to be in contact with the terminals when the jack is mounted. Then, as shown in FIG. 4, the mounting of the jack is performed by soldering the terminal 1-2 in accordance with the wiring conductor 3-2 of the printed circuit board 3.

Next, a printed circuit board insertion mounting type as a second conventional example will be described. Referring to FIG.
As in the case of the printed circuit board surface mounting type shown in FIG. 4, the jack includes a jack body 1, a plug insertion port 1-3, and terminals 1- for electrical connection arranged on a bottom face 1-4 of the jack body.
And 2. Referring to FIG. 7, through holes 3-3 are arranged in printed circuit board 3 on which the jack is mounted, and wiring conductors 3-2 are connected on the opposite surface of the jack mounting surface. When a jack is mounted, dimensions and number of the through holes 3-3 are set so that the terminals 1-2 can be inserted. The jack is mounted by inserting the terminal 1-2 into the through hole 3-3 of the printed circuit board 3 and soldering 5 with the wiring conductor 3-2 on the surface opposite to the jack mounting surface as shown in FIG. Done. The terminal 1-2
Has a length that does not hinder soldering on the opposite surface when inserted into the printed circuit board 3.

[0005]

In such a conventional jack mounting structure, in the case of the printed circuit board surface mounting type, which is the first prior art, fixing the jack to the printed circuit board involves connecting terminals and wiring conductors. Since it depends only on the strength of the solder to be connected, it is weak, cannot withstand the external force exerted by inevitably frequently inserting and pulling out a plug into the jack, and the problem that the jack peels off the printed circuit board easily occurs.

In the case of the printed circuit board insertion type of the second prior art, the jack is fixed to the printed circuit board in addition to the solder for connecting the terminals and the wiring conductors, and a through hole formed in the printed circuit board. Although the strength is quite strong due to the structural elements generated by inserting the terminals into the holes, the through holes are drilled in the printed circuit board and soldering is performed on the opposite side of the jack mounting surface, so the jack mounting when mounting the jack Both sides, the opposite side and the opposite side, are required, and this is an obstacle to the recent trend of high density mounting of printed circuit boards due to lighter and smaller devices.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a jack mounting structure in which the jack is not peeled off from the printed circuit board by an external force applied to the jack due to insertion and removal of a plug and the mounting space on the printed circuit board is small. .

[0008]

SUMMARY OF THE INVENTION
The mounting structure consists of the printed circuit board mounting surface of the jack and the
In the space defined by the hook provided in the hook.
By inserting the printed circuit board, the jack
Jack mounting structure fixed to the lint board
The surface provided on the hook and the jack
Step-shaped shape that changes the distance from the printed circuit board mounting surface
The jack having the printed circuit board
Fixed to

[0009]

[0010]

[0011]

[0012]

[0013]

Next, the present invention will be described with reference to the drawings. Referring to FIG. 1 showing an embodiment of the present invention, a jack includes a jack body 1 and terminals 1-2 for electrically connecting the jack body 1 and the printed circuit board 3.
And a plug insertion port 1-3 for inserting a power plug or the like.
And a hook 2 provided near the plug insertion port 1-3. The plug insertion port 1-3 is exposed outside the housing 4 through a hole 4-1 formed in the housing 4. The hook 2 has a structure in which a plate is fitted into the cylinder of the plug insertion port 1-3. There are two types of configurations of the hook 2, namely, an integral structure with the jack main body 1 and another part. In the case of a different part configuration, the fixing to the jack main body is generally performed by bonding. The housing and the hook 2 of the jack body 1 are made of resin,
-2 is generally a metal. Further, the terminal 1-2 protrudes from the side surface of the jack body 1 so that the jack can be surface-mounted on a printed circuit board.

Referring now to FIG. 2, the hook 2 has an upper stage 2-1, a middle stage 2-2, and a lower stage 2-3 in a stepwise manner and symmetrically with respect to the center line of the plug insertion port 1-3. Is formed. The dimensions a, b, and c formed by the step of the hook 2 and the bottom surface 1-4 of the jack main body correspond to the thickness of the printed circuit board 3 on which the jack is mounted. The dimensions a, b and c are, for example, 0.6 mm, 0.8 mm and 1 mm respectively, or 0.8 mm respectively.
mm, 1 mm and 1.2 mm. First, the width d, e and f of the step of the hook 2 are determined in accordance with the dimension of the plug insertion port 1-3, and e and f
Is determined such that the width of the step formed by the step does not hinder the printed circuit board from riding. When the material is resin, the thickness g of the hook 2 is set at 0.
8 mm to 1 mm is appropriate.

Referring to FIG. 3, wiring conductors 3-2 corresponding to jack terminals 1-2 are arranged on a printed circuit board 3 on which the jack is mounted. When the jack is mounted, there is a notch 3-1 at the position where the hook 2 (FIG. 1) of the jack comes, and the notch 3-1 is formed with dimensions h and i. The dimension i corresponds to the dimensions d, e and f of the hook 2 (FIG. 2), and depending on the thickness of the printed circuit board 3, which step (2-1, 2-2 and 2-3 in FIG. 2) is used. It depends on. Further, the dimension h is set to be equal to or greater than the thickness dimension g (FIG. 2) of the hook 2,
The hook 2 comes into contact with the side 3-4 of the notch 3-1.

Next, the operation of the present invention will be described in detail. As shown in FIG. 2, the notch 3-1 of the printed circuit board 3 is fitted into a space formed by the hook 2 and the bottom surface 1-4 of the jack body. For example, when the thickness of the printed board 3 is the dimension a, the dimension i (FIG. 3) of the notch 3-1 of the printed board 3 is set to a width enough to catch on the upper stage 2-1; Is set. This notch 3-
When the hook 2 is fitted into one portion, the printed circuit board 3 is fixed in a space formed by the jack body bottom surface 1-4 and the upper stage 2-1. The same applies to the case where the thickness of the printed circuit board 3 has the dimensions b and c. In this case, each middle stage 2
-2 and lower stage 2-3 are used. If the number of steps is further increased, the thickness of the printed circuit board that can be handled can be increased. Next, soldering 5 is performed by aligning the jack terminal 1-2 with the wiring conductor 3-2 on the printed circuit board 3.
Accordingly, even if an external power is applied to the jack in a direction other than the direction of pulling out the plug by inserting the power plug or the like into the plug insertion port 1-3 (when the plug is pulled out, almost no force is applied to the jack), the jack is not affected. Since the mounted printed circuit board 3 is moved between the jack main body bottom surface 1-4 and the hook 2 and is moved with the jack, no force is applied to the jack main body 1 and the soldered portion 5 of the printed circuit board 3.

As described above, the hook is provided near the plug insertion opening of the jack, and the printed circuit board is sandwiched between the hook and the bottom surface of the jack body. Therefore, the fixing of the jack to the printed circuit board is enhanced, and the jack is printed. A board surface mounting type can be used, and as a result, the mounting space of the jack on the printed circuit board can be minimized.

Further, by providing the hook provided on the jack with a step corresponding to the change in the thickness of the printed circuit board, the variation in the thickness of the printed circuit board on which the jack can be mounted is increased, and the use range can be expanded.

[0019]

As described above, the first effect of the present invention is that the jack is fixed to the printed circuit board by sandwiching the printed circuit board between the hook provided on the jack and the bottom surface of the jack. It can be a board surface mounting type, and the mounting space of the jack on the printed board can be minimized.

The reason for this is to prevent the external force applied to the jack by plug insertion / extraction due to the fixing by the hook from being directly applied to the fixing portion by soldering between the jack terminal and the printed circuit board.

The second effect of the present invention is that, since the hook provided on the jack is provided with a step corresponding to the change in the thickness of the printed circuit board, the variation in the thickness of the printed circuit board on which the jack can be mounted is increased, and the usage range is increased. Spreads.

[Brief description of the drawings]

FIG. 1 is a three side view showing a mounting state of a jack on a printed circuit board in a jack mounting structure according to an embodiment of the present invention.

FIG. 2 is a three side view showing details of a hook portion of the jack in the jack mounting structure of the embodiment.

FIG. 3 is a view showing a printed circuit board for fixing the jack in the jack mounting structure of the embodiment.

FIG. 4 is a three side view showing a mounting structure of a first conventional printed circuit board surface mounting type jack.

FIG. 5 is a diagram showing a printed circuit board for fixing a printed circuit board surface mount type jack of the first conventional example.

FIG. 6 is a three side view showing a printed circuit board insertion type jack mounting structure of a second conventional example.

FIG. 7 is a view showing a printed circuit board for fixing a printed circuit board insertion type jack of the second conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Jack main body 1-2 Terminal 1-3 Plug insertion port 1-4 Jack main body bottom 2 Hook 2-1 Upper stage 2-2 Middle stage 2-3 Lower stage 3 Printed circuit board 3-1 Notch 3-2 Wiring conductor 3-3 Penetration Hole 3-4 Side 4 Housing 4-1 Hole 5 Soldering a, b, c, d, e, f, g, h, i dimensions

Claims (1)

(57) [Claims] A jack mounted on a printed circuit board;
Into the space defined by the hooks provided on the
By sandwiching the lint board, the jack
Jack mounting structure fixed to the printed circuit board
In the fabrication, the surface provided on the hook is
Step-like shape where the distance from the printed circuit board mounting surface changes
The jack having the shape of
A jack mounting structure that is fixed to a board .