JP6237198B2 - Lead wire guide structure and electronic device - Google Patents

Description

  The present invention relates to a guide structure for a lead wire of an electronic component such as a speaker, and an electronic apparatus including a lead wire by the guide structure.

  Patent Document 1 discloses a structure in which a lead wire of a speaker is sandwiched between slits of a fixing substrate.

JP 2002-29089A

Conventionally, when a lower case is assembled to an upper case in which a speaker is incorporated, the rib of the lower case may bite the lead wire of the speaker.
In order to avoid this, if the lead wire is fixed with a tape or the like, the cost increases and the assembly work efficiency decreases.

  The object of the present invention is to hold the lead wire of the electronic component along the board, and even if the case is assembled, the lead wire is not bitten, the fixing tape is eliminated, and the assembly workability is improved. And to reduce costs.

In order to solve the above problems, the present invention provides:
The protrusion provided on the key sheet of the elastic insulating material disposed on the one surface side of the key circuit board is penetrated through the through hole of the key circuit board and protrudes to the other surface side of the key circuit board.
A lead wire in which a lead wire of an electronic component disposed on the other surface side of the key circuit board is inserted and sandwiched in a groove formed in a protrusion of the protrusion to the other surface side of the key circuit board. It features a guide structure.

According to the present invention, since the lead wire can be fixed to the groove formed in the key misalignment prevention protrusion, the lead wire is not caught even when the case is assembled.
Therefore, the assembly workability is improved, and the fixing tape can be eliminated to reduce the cost.
In addition, since the key is an insulating material, there is no short circuit even if the lead wire is cut off.

1 is a plan view showing an example of an electronic component mounting structure of an electronic dictionary, showing a configuration of an embodiment of an electronic apparatus to which the present invention is applied. It is an expanded sectional view along the arrow AA line of FIG. It is an enlarged view (a) of the slip prevention rib which has a groove | channel for letting the lead wire of FIG. 1 pass, and the figure (b) of the state which passed the lead wire through the groove | channel. It is an expanded sectional view along the arrow BB line of Drawing 3 (b). It is a top view which shows a modification.

DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments for carrying out the present invention will be described in detail with reference to the drawings.
(Embodiment)
1 and 2 show an example of an electronic component mounting structure of an electronic dictionary as a configuration of an embodiment of an electronic apparatus to which the present invention is applied. 1 is an upper case, 2 is a main circuit board, 3 is a key circuit board, 4 is a rubber key, 5 is a speaker (electronic component), and 6 is a lead wire.

As shown in the figure, a main circuit board 2 and a key circuit board 3 are fixed to the upper case 1, and a rubber key 4 is disposed under the key circuit board 3. The rubber key 4 is disposed on the surface of the key circuit board 3 having the key contacts, and a plurality of dome-shaped key buttons that can be deformed into a key sheet of a sheet-like member are integrally formed. As will be described later, the rubber key 4 has a plurality of protrusions 41 for preventing displacement on the sheet surface opposite to the sheet surface on which the key buttons are formed.
In addition, a speaker 5, which is an electronic component located substantially at the center of the key circuit board 3, is fixed to the upper case 1.

One end of a pair of lead wires 6 is fixed to the pair of plus / minus terminal portions of the speaker 5 with solder.
The other ends of the pair of lead wires 6 are fixed to a pair of plus / minus terminal portions located on the right side of the key circuit board 3 of the main circuit board 2 with solder.

The seven misalignment prevention protrusions 41 provided on the rubber key 4 sheet pass through the through holes 31 of the key circuit board 3 to prevent the rubber key 4 from misalignment with the key circuit board 3.
Further, the protrusion 41 for preventing the displacement of the rubber key 4 is formed with a hole 43 on the back side of the protrusion, and the protrusion 11 for preventing the displacement of the upper case 1 is inserted into the hole 43, respectively. This prevents the rubber key 4 from shifting.

In the above, the lead wire 6 is fixed by using the protrusion 41 for preventing the shift of the rubber key 4.
That is, between the main circuit board 2 and the speaker 5, as shown in an enlarged manner in FIGS. 3 and 4, four protrusions 41 for preventing misalignment of the rubber key 4 are extended to form protrusions. A groove 42 is formed in the portion.
Then, the lead wires 6 are respectively press-fitted into the grooves 42 of the four protrusions 41 and sandwiched.

As described above, according to the guide structure of the lead wire 6 of the speaker 5 according to the embodiment, the protrusion 41 for preventing displacement that is integral with the rubber key 4 penetrates the through hole 31 of the key circuit board 3 and protrudes to the other surface side. Even if the lead wire 6 becomes longer by forming the groove 42 in the protrusion portion of the protrusion 41 toward the other surface and inserting the lead wire 6 into the groove 42, the protrusion portion of the protrusion 41 of the rubber key 4 Therefore, even if a lower case (not shown) is assembled, the lead wire 6 is not caught.
Therefore, the assembly workability is improved, and the fixing tape can be eliminated to reduce the cost.
Further, since the rubber of the protrusion 41 is an insulator, even if the covering of the lead wire 6 is cut, there is no short circuit.

(Modification)
FIG. 4 shows a modified example. As shown in the drawing, a protrusion 41 for preventing misalignment integral with the rubber key 4 is formed in a large diameter, and two protrusions of the large diameter protrusion 41 are substantially parallel to each other. The groove 42 is formed.
Then, the pair of lead wires 6 are press-fitted into the two grooves 42 of the large-diameter protrusion 41 and sandwiched therebetween.

  In this way, the pair of lead wires 6 may be held in the two grooves 42 of the large-diameter protrusion 41 integral with the rubber key 4.

(Other variations)
In the above embodiment, the lead wire of the speaker of the electronic dictionary is used. However, the present invention is not limited to this, and is not limited to the speaker, and may be a lead wire of another electronic component such as a microphone. The electronic device is not limited to a dictionary, and may be another electronic device such as a mobile phone.
In the embodiment, the rubber key is used. However, a key made of another elastic insulating material such as a soft resin may be used.
Furthermore, the shape, number, etc. of the keys, protrusions and grooves are arbitrary, and it is needless to say that other specific detailed structures can be appropriately changed.

As mentioned above, although several embodiment of this invention was described, the scope of the present invention is not limited to the above-mentioned embodiment, The range of the invention described in the claim, and its equivalent range Including.
The invention described in the scope of claims attached to the application of this application will be added below.
The item numbers of the claims described in the appendix are as set forth in the claims attached to the application of this application.
[Appendix]
<Claim 1>
The key sheet of elastic insulating material is arranged on one side of the key circuit board, while the lead wire of the electronic component is arranged on the other side of the key circuit board,
Protrusions provided on the key sheet of the elastic insulating material penetrate the through holes of the key circuit board and project to the other surface side,
Forming a groove in the protrusion of the protrusion toward the other surface;
A lead wire guide structure, wherein the lead wire is inserted and inserted into the groove.
<Claim 2>
The electronic component is disposed on a part of the key circuit board,
The terminal part of the main circuit board is arranged outside the key circuit board,
One end of the lead wire is soldered to the terminal part of the electronic component,
The lead wire guide structure according to claim 1, wherein the other end of the lead wire is soldered to a terminal portion of the main circuit board.
<Claim 3>
The lead wire guide structure according to claim 1 or 2, wherein an integral protrusion is inserted into the case in a hole formed on a back side of the protrusion provided on the key sheet of the elastic insulating material.
<Claim 4>
A plurality of the grooves are formed substantially parallel to the protrusion of the protrusion toward the other surface;
4. The lead wire guide structure according to claim 1, wherein the lead wires are respectively inserted and sandwiched in the plurality of substantially parallel grooves. 5.
<Claim 5>
An electronic device comprising a lead wire arranged by the guide structure according to claim 1.

1 Case 11 Protrusion 2 Main circuit board 3 Key circuit board 31 Through hole 4 Key sheet 41 Protrusion 42 Groove 43 Hole 5 Electronic component 6 Lead wire

Claims (5)

The protrusion provided on the key sheet of the elastic insulating material disposed on the one surface side of the key circuit board is penetrated through the through hole of the key circuit board and protrudes to the other surface side of the key circuit board.
A lead wire of an electronic component disposed on the other surface side of the key circuit board is inserted and sandwiched in a groove formed in a protrusion of the protrusion to the other surface side of the key circuit board. Lead wire guide structure. The electronic component is disposed on a part of the key circuit board,
The terminal part of the main circuit board is arranged outside the key circuit board,
One end of the lead wire is soldered to the terminal part of the electronic component,
The lead wire guide structure according to claim 1, wherein the other end of the lead wire is soldered to a terminal portion of the main circuit board. A protrusion formed integrally with the case that accommodates the key circuit board, the key sheet, and the lead wire is inserted into a hole formed on the back side of the protrusion provided on the key sheet of the elastic insulating material. The lead wire guide structure according to claim 1, wherein the lead wire guide structure is a lead wire structure. A plurality of the grooves are formed substantially parallel to the protrusion of the protrusion toward the other surface,
The lead wire guide structure according to any one of claims 1 to 3, wherein the lead wires are respectively inserted and sandwiched in the plurality of substantially parallel grooves. It has a guide structure according to any one of claims 1 to 4 ,
The key circuit board;
The key sheet;
The lead wire;
An electronic device comprising: the key circuit board, the key sheet, and a case in which the lead wire is accommodated .

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