JP3765110B2 - Housing structure - Google Patents

Description

[0001]
[Industrial application fields]
The present invention relates to a housing structure of an electronic device having a light transmission window in a case.
[0002]
[Prior art]
For example, in a portable electronic device typified by a pager or the like, for example, there is a case in which a light emitting display window for notifying an incoming call signal by light emission is provided in a case.
Conventionally, in assembling work, a transparent member that transmits light, for example, acrylic resin, is bonded to the window opening formed in the case using an adhesive, or packing is filled around the window opening to prevent it. It had a drop structure.
In addition, for example, in the case of a portable electronic device provided with a light receiving element such as a photosensor in the case, and a light-transmitting transmission window for the light receiving element is provided in the case, the drip-proof structure is the same as that of the light-emitting display window. It was.
[0003]
[Problems to be solved by the invention]
As described above, the conventional portable electronic device uses an adhesive or packing for attaching the transmissive member to the light emitting display window or the light transmissive window. However, since the transmissive member itself is small, It is difficult to apply an appropriate amount, and it is necessary to secure the curing time of the adhesive. Further, there is a problem that the adhesive protrudes to the surface of the case, and the packing between the window opening and the transmission member is There was a problem that the press-fitting was quite difficult due to the structure.
[0004]
An object of the present invention is to provide an electronic device having a light transmission window in a case, by simply attaching a transmission member to a window opening formed in the case without using a conventional adhesive or packing. It is to be able to obtain a proper drip-proof function.
[0005]
[Means for Solving the Problems]
The present invention provides a housing structure having a transmission window in which an optical transmission member is provided in a window opening formed in a case, wherein the window opening is formed in a split surface of the case, has elasticity, and the case A permeable elastic member formed integrally with the packing interposed on the dividing surface is attached to the window opening in a press-fitted state.
[0015]
【Example】
Hereinafter, an embodiment of a housing structure according to the present invention will be described with reference to FIGS. First, FIG. 1 shows a main structure of a first embodiment of a light emitting display window as an example of a housing structure to which the present invention is applied. 1 is a case, 2 is a window opening, and 3 is a transmission member housing. Reference numeral 4 denotes a holding rib, 5 denotes a transparent elastic member, 6 denotes a display unit, 7 denotes a lens unit, 8 denotes a circuit board, 9 denotes a light emitting element (LED), and 10 denotes a transmission window (light emission display window).
[0016]
In this embodiment, as shown in the figure, a transmissive member accommodating portion 3 having a larger shape than the window opening 2 is formed inside the case 1 continuously to the window opening 2 of the case 1.
That is, as shown in FIG. 2 (a), the transmission member storage portion 3 is entirely surrounded by a holding rib 4 that is integrally formed by projecting from the inner side surface of the case 1 at a position distant from the window opening 2. Is surrounded.
[0017]
The transmissive member accommodated in the transmissive member accommodating portion 3 is a permeable elastic member 5 having elasticity. In the embodiment, the transmissive elastic member 5 is mixed with a diffusing material for diffusing light. It is made of transparent silicon rubber material.
The transparent elastic member 5 made of a transparent silicon rubber material includes a display unit 6 having a shape corresponding to the window opening 2, and a lens unit 7 having a shape for storing or diffusing light corresponding to the transmission member storage unit 3. The shape is formed by integrally molding.
[0018]
Here, as shown in FIG. 2A, as shown in FIG. 2B, the vertical dimension x and the horizontal dimension y of the window opening 2 and the vertical dimension A and the horizontal dimension B of the transmission member storage part 3 are shown. Further, the vertical dimension x and horizontal dimension y of the display unit 6, the vertical dimension A + α of the lens unit 7, and the horizontal dimension B + α are obtained. That is, the display unit 6 and the window opening 2 of the transparent elastic member 5 have the same vertical dimension x and horizontal dimension y, but the lens unit 7 of the transparent elastic member 5 has the vertical dimension of the transparent member storage unit 3. The external dimension is larger than the dimension A and the horizontal dimension B by the dimension α in both the vertical and horizontal directions.
[0019]
Accordingly, as shown in FIG. 1, the dimension α is a state in which the lens portion 7 of the permeable elastic member 5 is press-fitted from the inside into the transmissive member storage portion 3 surrounded by the holding rib 4 of the case 1. This is the vertical and horizontal compression size.
An LED (Light Emitting Diode) 9 that is a light emitting element mounted on the circuit board 8 is disposed in the vicinity of the end surface of the lens portion 7 press-fitted into the transmissive member housing portion 3 in this manner.
Note that the gap between the end surface of the lens 7 and the top surface of the LED 9 is set to almost zero so that the LED 9 can receive the pushing force from the outside of the case 1. Further, the clearance between the end surface of the lens 7 and the circuit board 6 may be substantially zero so that the circuit board 6 can receive the pushing force from the outside of the case 1.
[0020]
As described above, on the outer surface of the case 1, the window opening 2 where the display unit 6 of the transmissive elastic member 5 is located is a light emitting display window 10 that is a transmissive window.
FIG. 3 shows an example of the external appearance of the electronic device having the light emitting display window 10 in the vicinity of the light emitting display window. In the embodiment, as a portable electronic device, the LED 9 is caused to emit light by receiving its own calling signal and notified. Applied to pager.
[0021]
As described above, in the embodiment, in the light emitting display window 10 of the LED 9 in the case 1 of the pager, the transparent silicon rubber material transmits the light in the large transmissive member housing 3 that is continuous with the window opening 2 of the case 1. Due to the structure in which the lens portion 7 of the elastic elastic member 5 is press-fitted and the display portion 6 of the transparent elastic member 5 is positioned in the window opening 2 of the case 1, The assembly operation is completed simply by press-fitting the lens portion 7 of the transparent elastic member 5 made of a transparent silicon rubber material.
That is, since the press-fitting allowance is secured between the holding rib 4 on the entire circumference of the transmissive member housing 3 and the lens portion 7 of the transmissive elastic member 5, the elasticity of the transparent silicone rubber material functions in the same manner as the packing. A sufficient drip-proof function can be obtained with certainty, and since it is not necessary to use an adhesive or packing when mounting a transmissive member as in the prior art, the assembly work is simplified.
[0022]
Next, the second embodiment shown in FIG. 4 and after will be described.
This second embodiment is also applied to a pager. FIG. 4 shows an example of the appearance of the pager, and FIGS. 5 (a) and 5 (b) are respectively taken along the lines AA and BB in FIG. FIG. 6 shows an example of the external appearance of an integral part of the permeable elastic member and the packing.
4 to 6, 11 is an upper case, 12 is a lower case, 13 is a packing groove, 14 is a packing pressing projection, 15 is a window opening, 16 is a projection receiving groove, 18 is a circuit board, 19 Is a light emitting element (LED), 20 is a transmissive window (light emitting display window), 21 is a transmissive elastic member, 22 is a packing (O-ring), 23 is an outward extension, 24 is an inward extension, and 25 is an upward protrusion. Part.
[0023]
In this second embodiment, as shown in FIG. 4 and FIG. 5A, a window opening that is elongated on one side of the case is continuous with the dividing surface that combines the upper case 11 and the lower case 12 constituting the case main body. A portion 15 is formed, and the window opening 15 is used as a light emitting display window 20 which is a transmission window.
That is, as shown in FIG. 5B, a packing groove 13 is formed on the entire circumferential dividing surface of the upper case 11, and a packing corresponding to the packing groove 13 is formed on the entire circumferential dividing surface of the lower case 12. A presser protrusion 14 is formed.
Further, as shown in FIGS. 4 and 5 (a), an elongated window opening 15 that opens to one side surface of the case is formed on the dividing surface of the upper case 11 and the lower case 12, and A protrusion housing groove 16 is formed on the split surface of the case 11.
[0024]
A circuit board 18 is disposed in the lower case 12, and an LED 19 that is a light emitting element mounted on the circuit board 18 is disposed in the vicinity of the window opening 15.
The transparent elastic member 21 having the window opening 15 as the light emitting display window 20 is formed of a transparent silicon rubber material mixed with a diffusing material for diffusing light, as in the first embodiment. As shown in FIG. 6, it is integrally formed with an O-ring 22 as a packing.
[0025]
That is, the permeable elastic member 21 is formed integrally with one side portion of the O-ring 22 having a substantially rectangular frame shape in a plan view, and has an outward extension 23 projecting elongated along the outer side of the O-ring 22. And an inward extending portion 24 that protrudes greatly inward of the O-ring 22, and an upper protrusion 25 that slightly protrudes above the O-ring 22.
As described above, the transparent elastic member 21 made of a transparent silicon rubber material has an outer extension 23, an inner extension 24, and an upper protrusion 25 having a shape for condensing or diffusing light corresponding to the window opening 15. Is formed integrally with the O-ring 22.
[0026]
Here, as shown in FIG. 5A, the permeable elastic member 21 described above has a longitudinal dimension of an elongated window opening 15 that is elongated in one side in a state where the upper case 11 and the lower case 12 are combined. In addition, the vertical dimension of the outer extension 23 and the inner extension 24 is set to be large, and the vertical dimension of the upper protrusion 25 is set to be larger than the vertical dimension of the protrusion storage groove 16 of the upper case 11 dividing surface. Is.
The inward extending portion 24 is set to a length dimension that extends sufficiently close to the upper side of the LED 19 on the circuit board 18.
[0027]
When the permeable elastic member 21 formed integrally with the O-ring 22 as described above is incorporated into the case body, the O-ring 22 is inserted into the packing groove 13 on the entire circumferential dividing surface of the upper case 11 to The O-ring 22 is pushed into the packing groove 13 by the packing pressing protrusion 14 on the circumferential dividing surface, and the permeable elastic member 21 is inserted into the elongated window opening 15 that opens on one side of the case. A transparent elastic member 21 is sandwiched between the divided surfaces, and the upper case 11 and the lower case 12 are fixed to each other by screws or the like (not shown).
In this case, the lower surface of the permeable elastic member 21 is pressed by the packing pressing protrusion 14 of the lower case 12 in the window opening 15, and the upper protrusion 25 is pressed by the protruding portion storing groove 16 of the upper case 11. The outer extension portion 23 and the inner extension portion 24 are sandwiched between the upper case 11 and the lower case 12 on both the outer and inner sides, and are in a press-fitted state.
[0028]
As described above, in the second embodiment, in the light emitting display window 20 of the LED 19 in the case body in the pager, the O-ring 22 is formed in the elongated window opening 15 on one side of the case body by the upper case 11 and the lower case 12. Since the transparent elastic member 21 made of an integral transparent silicon rubber material is sandwiched between the upper case 11 and the lower case 12 and press-fitted, the case is assembled when the case main body is assembled with the upper case 11 and the lower case 12. At the same time as interposing the O-ring 22 between the dividing surfaces, an assembly operation is performed simply by inserting a transparent elastic member 21 made of a transparent silicon rubber material integral with the O-ring 22 into the elongated window opening 15 continuous with the case dividing surface. Is completed.
That is, since a press-fitting allowance is ensured between the window opening 15 on the dividing surface of the upper case 11 and the lower case 12 and the permeable elastic member 21, a sufficient drip-proof function can be reliably obtained, Since the permeable elastic member 21 can be assembled together with the O-ring 22, the assembling work is simplified.
[0029]
In the above embodiments, a case of a pager having a light emitting display window as a casing structure having a transmissive window has been described. However, the present invention is not limited to this, for example, a portable AV device or an electric razor. An electronic device case to which a drip-proof function such as the above is applied can also be applied to light-emitting displays such as operation display, charging completion, and alarm display.
Furthermore, the present invention can be appropriately applied to a case of an electronic apparatus having a light receiving transmission window for a light receiving element provided in the case.
Further, the shape of the window opening of the case, the shape and material of the permeable elastic member, etc. are arbitrary, and it is needless to say that the specific detailed structure and the like can be changed as appropriate.
[0030]
【The invention's effect】
According to the housing structure according to the present invention, the transmission window is formed by mounting a transparent elastic member in a press-fitted state on the window opening of the case, so that transmission can be performed without using a conventional adhesive or packing. A reliable drip-proof function can be obtained only by a simple assembling work by press-fitting the elastic elastic member into the window opening.
In addition, it is a permeable elastic member that is press-fitted into the window opening of the case dividing surface, and is integrated with the packing interposed in the case dividing surface. A permeable elastic member can be press-fitted into the opening, and the split surface of the case and the drip-proof function of the transmissive window can be obtained together. Thus, the transmission window can be installed using the case dividing surface, and the number of parts and the number of assembling steps can be reduced by integrating the packing and the permeable elastic member.
[Brief description of the drawings]
FIG. 1 is a longitudinal side view showing a structure of a main part of a first embodiment of a light emitting display window as an example of a transmissive window of an electronic apparatus to which the present invention is applied.
2A and 2B are views of the main part structure of FIG. 1 as viewed from below, in which FIG. 2A is a bottom view from the back side of the case showing an example of the shape of the window opening and the transmissive member storage part, and FIG. It is a bottom view which shows a member.
3 is a partial perspective view showing an example of an external appearance of an electronic device case having the light emitting display window of FIG. 1;
FIG. 4 is a perspective view showing an external appearance example of an electronic device case of a second embodiment having a light emitting display window as a transmission window to which the present invention is applied.
5 is a cross-sectional view of the main part of FIG. 4, where (a) is an enlarged cross-sectional view taken along the line AA in FIG. 4 and (b) is an enlarged cross-sectional view taken along the line BB in FIG. It is.
FIG. 6 is a perspective view showing an external appearance example of an integral part of a permeable elastic member and packing according to a second embodiment.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Case 2 Window opening part 3 Transmission member accommodating part 4 Holding rib 5 Transparent elastic member 6 Display part 7 Lens part 8 Circuit board 9 Light emitting element 10 Transmission window 11 Upper case 12 Lower case 13 Packing groove 14 Packing pressing protrusion 15 Window Opening 16 Protrusion receiving groove 18 Circuit board 19 Light emitting element 20 Transmission window 21 Transparent elastic member 22 Packing 23 Outer extension 24 Inner extension 25 Upper protrusion

Claims (1)

In a housing structure having a transmission window in which an optical transmission member is provided in a window opening formed in the case,
The window opening is formed on the dividing surface of the case, and a permeable elastic member that is elastic and formed integrally with a packing interposed in the case dividing surface is attached to the window opening in a press-fit state. A housing structure characterized by that.

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