JP4784388B2 - U-shaped fitting fitting structure and electronic equipment - Google Patents

Description

  The present invention relates to a fitting structure for a U-shaped bracket for electrically connecting two substrates, and in particular, a U-shaped fitting for easily confirming that the U-shaped bracket is securely mounted. The present invention relates to a structure and an electronic device using the structure.

  Conventionally, a U-shaped metal fitting is used to connect a ground between a main board and a sub board of a mobile phone.

  The U-shaped fitting is fitted into the side surface of the resin frame and abuts the opposing sub-board and main board in a state of being fitted into the resin frame. A ground pattern is exposed at a location where the U-shaped brackets of both boards are in contact with each other in the front and back direction of the frame, and the ground between the main board and the sub board is connected.

  The U-shaped bracket has a structure in which a click sound is generated when it is fitted into the resin frame so that it can be confirmed that it is fixed at the time of assembly.

  However, in the past, the corner of the part where the U-shaped bracket of the resin frame was fitted remained, so the thickness of the resin frame interfered with the base side of the U-shaped bracket due to manufacturing errors, and the tip of the bracket was tightened. The power sometimes declined. In this case, there is no click sound (or it is small), and it will not be possible to confirm whether or not the U-shaped bracket is securely fitted.

As a conventional technique for connecting a ground between a main board and a sub board of a mobile phone, there is a “conduction clip” disclosed in Patent Document 1.
Japanese Patent Laid-Open No. 9-223527

  However, when the two conductive members are electrically connected using the invention disclosed in Patent Document 1, the guide fitting protrudes from one side of the clip and remains exposed. Therefore, not only is the space saving hindered, but there is a possibility that the conductor contacts the exposed metal fitting and short-circuits.

  The present invention has been made in view of such a problem, and provides a U-shaped fitting fitting structure for electrically connecting two substrates in a space-saving manner in a safe and reliable manner, and an electronic apparatus to which the same is applied. With the goal.

In order to achieve the above object, the present invention provides, as a first aspect, a U-shaped bracket in which both tip portions are bent at a substantially right angle with respect to the central portion in order to electrically connect two printed boards. The U-shaped fitting fitting structure that attaches to the resin frame, and at least one notch or hole is provided at each of the tip portions of the U-shaped fitting, and the distance between both ends is widened. The resin frame is chamfered at each portion facing the corner formed by one of the front ends of the U-shaped bracket and the central portion, and is cut or A protrusion fitting to be fitted to each of the holes is provided in a chamfered portion to provide a U-shaped fitting fitting structure.

In a first aspect of the present invention, the protrusion is a part of the roots drop point, it is preferable that the cross-sectional area toward the distal end side continuously decreases. Moreover, it is preferable that the notch or hole of a U-shaped metal fitting is provided in the position near a bending part rather than the center of a front-end | tip part. Further, it is preferable that at least one of the front end portions of the U-shaped metal fitting is formed with a protrusion that protrudes on the opposite side of the other front end portion and comes into contact with one of the printed circuit boards.

  Moreover, in order to achieve the said objective, this invention is as a 2nd aspect, via two front-end | tip parts of the U-shaped fitting fitting structure concerning the structure in any one of the said 1st aspect of the said invention, It is an object of the present invention to provide an electronic device characterized in that two printed boards in a casing are electrically connected.

  According to the present invention, it is possible to provide a U-shaped fitting fitting structure for electrically connecting two substrates in a space-saving manner in a safe and reliable manner, and an electronic device to which this is applied.

[First Embodiment]
A first embodiment in which the present invention is suitably implemented will be described. FIG. 1 shows a fitting structure of a U-shaped bracket according to this embodiment.
This fitting structure is a structure in which a U-shaped fitting 4 is fitted on the side surface of the resin frame 3 and is fitted to the main board 1 via the resin frame 3 as a holder of the sub-board 2. For positioning the resin frame 3 and the U-shaped bracket 4, the resin frame 3 is provided with protrusions 31 and 32, and the U-shaped bracket 4 is provided with grooves 41 and 42.

  The resin frame 3 is provided with a chamfered surface 33. Further, the U-shaped metal fitting 4 is provided with slopes 43 and 44 for facilitating the fitting with the resin frame 3 and a projection 45 as a point for ensuring conduction with the substrate.

  If necessary, as shown in FIG. 4, it is possible to provide a metal fitting 5 that is surface-mounted by soldering to further ensure the conduction of the ground.

The assembly procedure will be described.
The U-shaped metal fitting 4 is inserted from the side surface of the resin frame 3 and fitted so as to sandwich the upper and lower sides of the resin frame 3. Since the resin frame 3 is provided with the chamfered surface 33, the U-shaped metal fitting 4 is fitted without interfering with the corner of the resin frame 3.
Since the U-shaped bracket 4 is provided with slopes 43 and 44, the end of the bracket rides on the protrusions 31 and 32 along the slope. When the U-shaped bracket 4 is further pushed in, the protrusions 31 and 32 of the resin frame 3 are fitted into the grooves 41 and 42 of the U-shaped bracket 4 so that the U-shaped bracket 4 is positioned and the resin is positioned. It is fixed to the frame 3. At this time, the end of the U-shaped bracket 4 that has spread over the protrusions 31 and 32 returns to the original width, and a click sound is generated.

  By providing the chamfered surface 33 on the resin frame 3, it is possible to reliably generate a click sound when the U-shaped bracket 4 is attached.

  The U-shaped metal fitting 4 is sandwiched between the main board 1 and the sub board 2 so as to make them conductive, so that no wasteful space is created for electrical connection. In addition, since there are no exposed terminals, there is no risk of a short circuit.

[Second Embodiment]
A second embodiment in which the present invention is suitably implemented will be described. In FIG. 5, the structure of the U-shaped fitting fitting structure concerning this embodiment is shown. In the present embodiment, the protrusions 31 and 32 of the resin frame 3 are formed so as to be fitted at a portion close to the base of the U-shaped metal fitting 4.

  Since the grooves 41 and 42 are provided near the bent portion of the U-shaped metal fitting 4 and are fitted to the protrusions 31 and 32, when the U-shaped metal fitting 4 is fitted to the resin frame 3, the U-shape is greatly deformed. Therefore, when the projections 31 and 32 and the grooves 41 and 42 are fitted, the U-shaped bracket 4 generates a larger click sound.

  Since other aspects are the same as those in the first embodiment, a duplicate description is omitted.

[Third Embodiment]
A third embodiment in which the present invention is preferably implemented will be described. FIG. 6 shows a U-shaped fitting fitting structure according to this embodiment. In the present embodiment, the resin frame 3 is cut away from the corner. In addition, the R surface 34 is formed at the base of the protrusions 31 and 32 and is rounded (in other words, the cross-sectional area of the protrusions 31 and 32 continuously decreases toward the tip side in the vicinity of the base. ).

  By providing the R surface 34, the click sound generated when the protrusions 31, 32 and the grooves 41, 42 are fitted is reduced, but the root of the protrusion is deeper than the surface on which the U-shaped bracket 4 is attached. Therefore, a clear sound can be generated without interference.

  Since other aspects are the same as those in the first embodiment, a duplicate description is omitted.

Each of the above embodiments is an example of a preferred embodiment of the present invention, and the present invention is not limited to these.
For example, in each of the above embodiments, the configuration in which the groove provided in the U-shaped metal fitting is fitted to the protrusion of the resin frame has been described as an example. You may make it fit.
As described above, the present invention can be variously modified.

It is a figure which shows the U-shaped fitting fitting structure concerning 1st Embodiment which implemented this invention suitably. It is a figure which shows the fitting part of a U-shaped metal fitting and a resin frame. It is sectional drawing which shows the state which the U-shaped metal fitting and the resin frame fitted. It is a figure which shows the structural example at the time of arrange | positioning the metal fitting for a connection with a ground. It is a figure which shows the U-shaped fitting fitting structure concerning 2nd Embodiment which implemented this invention suitably. It is a figure which shows the U-shaped metal fitting fitting structure concerning 3rd Embodiment which implemented this invention suitably. It is a figure which shows the conventional U-shaped fitting fitting structure.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Main board | substrate 2 Sub board | substrate 3 Resin frame 4 U-shaped metal fitting 31, 32 protrusion 33 Chamfering surface 34 R surface 41, 42 Groove 43, 44 Slope 45 protrusion

Claims (5)

In order to electrically connect two printed boards, a U-shaped fitting fitting structure in which a U-shaped fitting whose both ends are bent at a substantially right angle with the central portion is attached to a resin frame,
Each of the both ends of the U-shaped bracket is provided with at least one notch or hole, and a sliding surface is formed so that the distance between both ends is widened.
The resin frame is chamfered at each portion facing a corner portion formed by one of the front end portions and the central portion of the U-shaped metal fitting, and is fitted with each of the notches or holes. The U-shaped fitting fitting structure characterized in that the projection to be joined is provided in the chamfered portion .   The U-shaped bracket fitting structure according to claim 1, wherein a cross-sectional area of the protrusion is continuously reduced toward a tip end portion in a portion near the base.   The U-shaped fitting fitting structure according to claim 1 or 2, wherein the notch or the hole of the U-shaped fitting is provided at a position closer to the bent portion than the center of the tip. .   2. A protrusion is formed on at least one of the front end portions of the U-shaped metal fitting so as to protrude toward the opposite side of the other front end portion and come into contact with one of the printed circuit boards. 4. A U-shaped fitting fitting structure according to any one of 3 above.   An electronic device comprising: two printed circuit boards in a housing electrically connected via the two tip portions of the U-shaped bracket fitting structure according to any one of claims 1 to 4. machine.

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