JP4361657B2 - Waterproof structure of press talk switch device in portable radio - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a waterproof structure for a press talk switch device provided in a portable wireless device.
[0002]
[Prior art]
As a waterproof structure of a press talk switch device conventionally provided in a portable wireless device, for example, one disclosed in Japanese Utility Model Laid-Open No. 3-22332 is known.
[0003]
As shown in FIG. 5, the waterproof structure of the press talk switch device disclosed in the above publication is pivoted so that one end of a press talk lever d can be pivoted on an outer casing c that houses a printed circuit board b on which the press talk switch a is mounted. On the other end side of the press talk lever d, a convex part f projects from the surface facing the push button part e of the press talk switch a.
[0004]
A recess g is formed between the push button portion e and the projection f of the press talk switch a by recessing the outer casing c. The recess g is formed in the through hole h opened at the center of the recess g. A push button portion e of the press talk switch a protrudes, and a waterproof rubber m composed of a cylindrical main body portion i, a thin skirt portion j and a flange-like outer edge portion k is press-fitted into the concave portion g. h prevents rainwater and the like from entering the outer casing c.
[0005]
[Problems to be solved by the invention]
However, in the waterproof structure of the conventional press talk switch device, when the press talk lever d is pressed, the convex part f projecting from the press talk lever d is a push button of the press talk switch a through the cylindrical main body part of the waterproof rubber m. Since the portion e is configured to be pressed, most of the pressing load applied to the press talk lever d is applied to the printed circuit board b to which the press talk switch a is attached.
[0006]
For this reason, since it is necessary to fix the printed circuit board b more firmly than necessary, the number of fixing points of the printed circuit board b is increased, the assemblability is lowered, and if the mounting position of the printed circuit board b is poor, the press talk lever d Since the press talk switch a may cause a malfunction when the is pressed, there is a problem that the mounting position accuracy of the printed circuit board b is also required.
[0007]
The present invention has been made to remedy such a conventional defect, and has a high strength in the pressing direction of the press talk lever, and a press talk switch device in a portable radio device which does not require much mounting board accuracy. It is an object of the present invention to provide a waterproof structure and to improve the assemblability.
[0008]
[Means for Solving the Problems]
In order to achieve the above object, the present invention provides a state in which a flexible board provided with a tact switch is attached to the outer surface of the lower housing of a portable wireless device, and the flexible board is covered with a waterproof member formed of an elastic material. in, by fixing the waterproof member by the fixing member, the waterproof the tact switch, the upper side of the fixing member, provided with press-to-talk button for operating the tact switch, on both sides of the fixing member, the top cover The fixing member is fixed by the top cover by projecting reinforcing ribs that match the inner surface shape and attaching the top cover to the lower housing .
[0009]
With the above configuration, when the press talk button is pressed to operate the press talk switch device, the waterproof member is elastically deformed and the tact switch is operated, so that talking is possible and the press load applied to the press talk button is fixed. Since the member supports, even if the press talk button is pressed with a strong force, the elastic member and the tact switch are not damaged.
[0015]
In addition, according to the present invention, when the top cover is attached to the lower housing, the reinforcing rib protruding from the fixing member guides the top cover when the top cover is attached. After mounting, the reinforcing ribs are in close contact with the inside of the top cover, so that the fixing member does not rattle.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
An embodiment of the present invention will be described in detail with reference to the drawings shown in FIGS.
[0017]
1 is an exploded perspective view of the portable radio, FIG. 2 is an arrow view from the direction A in FIG. 1, FIG. 3 is an arrow view from the direction B in FIG. 2, and FIG. 4 is an assembled state of the press talk switch device. It is sectional drawing.
[0018]
A casing 1 of the portable wireless device includes an upper casing (not shown) and a lower casing 2.
[0019]
The lower housing 2 has an open top surface, accommodates a printed circuit board (not shown) on which electronic components are mounted, and a press talk device 3 on the outer surface.
[0020]
An oval flat surface 2a is formed on the press-talk device mounting surface of the lower housing 2, and a waterproof member 4 made of an elastic body such as rubber is provided in a concave groove 2b provided around the flat surface 2a. The peripheral edge 4c is fitted.
[0021]
The press talk device 3 includes a flexible substrate 5 provided with a tact switch 5a, a waterproof member 4 covering the flexible substrate 5, a fixing member 6 and a press talk button 7. A top cover 8 that covers a part is attached to the outer surface of the lower housing 2.
[0022]
The flexible substrate 5 has a tact switch 5a for press talk and a power switch 5b formed at both ends of the upper surface, and the tact switch 5a and the power switch 5b and the printed circuit board in the housing 1 are electrically connected to the lower surface. A wiring part 5c connected to the cable is extended, and the wiring part 5c is inserted into the lower housing 2 through a long hole 2c opened in the flat surface 2a of the lower housing 2, and is printed Positioning holes 5d for positioning the flexible substrate 5 with respect to the flat surface 2a are opened on both ends of the substrate 5 by fitting with positioning protrusions 2d protruding from both ends of the flat surface 2a.
[0023]
The waterproof member 4 is formed in substantially the same shape as the flat surface 2a of the lower housing 2, and is formed with a square button portion 4a and a cylindrical button portion 4b on both ends, and a peripheral edge around the flat surface 2a. A rib-shaped peripheral edge portion 4c that fits into a concave groove 2b provided in the projection is provided.
[0024]
On the lower surface of the square button portion 4a, a protrusion 4d that presses the substantially central portion of the tact switch 5a provided on the flexible substrate 5 is provided so as not to contact the upper surface of the tact switch 5a. A recess 4e is formed at the center of the upper surface of the press talk button 7 so as to be fitted with a projection 7d protruding from the back surface of the press talk button 7, and provided on the flexible substrate 5 on the lower surface of the cylindrical button portion 4b. A protrusion 4f that presses substantially the center of the power switch 5b is provided so as not to contact the power switch 5b.
[0025]
The fixing member 6 is formed by bending a metal plate into a substantially L shape, and square hole-shaped openings 6a and 6b from which the button portions 4a and 4b protrude at positions that coincide with the button portions 4a and 4b of the waterproof member 4. Are opened, and reinforcing ribs 6c project from both side edges.
[0026]
Between the opening 6a and the opening 6b of the fixing member 6, there is a long hole 6d at a position close to the opening 6b from which a pair of bearings 2e protruding from the flat surface 2a of the lower housing 2 protrudes. At the end of the opening 6b side, an opening is formed in a substantially T-shaped engagement hole that is engaged with an approximately T-shaped engagement protrusion 2f that protrudes in the vicinity of the flat surface 2a of the lower housing 2. 6e is opened.
[0027]
The press talk button 7 is integrally formed of resin or the like, and a shaft pin 7a that is rotatably supported by a bearing portion 2e that protrudes in the vicinity of the flat surface 2a of the lower housing 2 is projected from one end side. A locking piece 7b that engages with the lower surface of the top cover 8 from below is provided on the periphery, and a plurality of anti-slip protrusions 7c are provided on the upper surface.
[0028]
The top cover 8 is formed in a substantially U shape so as to cover a part of the upper surface and both side surfaces of the housing 1, and is a rectangular shape in which the upper surface of the press talk button 7 protrudes at a position matching the press talk button 7. The opening 8a and the circular opening 8b from which the button 4b of the waterproof member 4 projects are opened, and the locking portions 8c formed at the open end are formed on both side surfaces of the lower housing 2. It can be attached to the lower housing 2 by being locked in the locking groove 2g.
[0029]
Next, the operation of the press talk switch device 3 of the portable wireless device configured as described above will be described.
[0030]
In assembling the press talk switch device 3, with the top cover 8 removed from the lower housing 2, the wiring portion 5c of the flexible substrate 5 is first inserted through the long hole 2c opened in the flat surface 2a. The positioning hole 5d is fitted into the positioning projection 2d, and the flexible substrate 5 is positioned with respect to the flat surface 2a.
[0031]
Next, when the waterproof member 5 is attached to the flat surface 2a so as to cover the flexible substrate 5, and the peripheral edge portion 4c of the waterproof member 4 is press-fitted into the concave groove 2b provided around the flat surface 2a, one end side of the fixing member 6 The locking hole 6e opened in the bottom is engaged with a locking projection 2f projecting in the vicinity of the flat surface 2a of the lower housing 2, and in this state, the button portion 4a of the waterproof member 4 from the openings 6a, 6b. The fixing member 6 is attached to the upper surface of the waterproof member 4 so that 4b protrudes.
[0032]
Next, while the shaft pin 7a of the press talk button 7 is fitted to the bearing portion 2e protruding from the long hole 6d of the fixing member 6, the open end portion of the top cover 8 is pushed and spread from above the lower housing 2. Inserted and locked to protrude from the opening end of the top cover 8 with the press talk button 7 protruding from the opening 8a of the top cover 8 and the button 4b of the waterproof member 4 protruding from the opening 8b. The press talk switch device 3 is assembled and the top cover 8 is attached by engaging the portion 8c in the locking grooves 2g on both sides of the lower casing 2, and the top cover 8 is attached to the lower casing 2. At this time, the top cover 8 is guided by the reinforcing rib 6 c of the fixing member 6, thereby facilitating the mounting operation of the top cover 8, and the reinforcing rib 6 c of the fixing member 6 is formed in advance on the inner surface shape of the top cover 8. By forming together, after installation of the top cover 8, to contact the reinforcing ribs 6c on the inner surface of the top cover 8, fixing member 6 nor rattling.
[0033]
Further, in the assembled state of the press talk switch device 3, as shown in FIG. 4, the locking piece 7 b protruding around the press talk button 7 is locked to the lower surface of the top cover 8 from below, so that the top cover 8 The press talk button 7 does not come off from the opening 8a and the flexible substrate 5 provided with the tact switch 5a and the power switch 5b is covered with the waterproof member 4, so that rainwater or the like is covered with the tact switch 5a or the power switch 5b. Intrusion into the portion can be reliably prevented.
[0034]
On the other hand, when the press talk button 7 is pressed when the portable wireless device is used, the press talk button 7 is pushed down while rotating around the shaft pin 7a, and as a result, the protrusion 7d protruding from the lower surface of the press talk button 7 is waterproof. In order to press the button part 4a of the member 4, the button part 4a is elastically deformed downward, so that a protrusion protruding from the lower surface of the button part 4a presses the tact switch 5a to turn it on, so that a call is made. be able to.
[0035]
Further, when the button portion 4b protruding from the opening 8b of the top cover 8 is pressed, the button portion 4b is elastically deformed, and the projection 4d protruding from the lower surface of the button portion 4b presses the power switch 5b. Can be turned on and off.
[0036]
In the above embodiment, the switch provided separately from the tact switch 5a is the power switch 5b, but it is needless to say that the switch is not limited to the power switch 5b.
[0037]
【The invention's effect】
As described in detail above, the present invention attaches a flexible board provided with a tact switch to the outer surface of the lower housing of the portable wireless device, and covers the flexible board with a waterproof member formed of an elastic material. in, by fixing the waterproof member by the fixing member, the waterproof the tact switch, the upper side of the fixing member, provided with press-to-talk button for operating the tact switch, on both sides of the fixing member, the top cover The fixing member is fixed by the top cover by projecting a reinforcing rib in accordance with the inner surface shape and attaching the top cover to the lower housing, so that the press talk switch is operated to operate the press talk switch device. When the button is pressed, the waterproof member is elastically deformed and the tact switch is operated. Together it becomes ability, since the pressing load applied to the press-to-talk button that the fixing member for supporting, even when pressed by a strong force to press-to-talk button, is not damaged elastic member and tact switches.
[0040]
Moreover, the fixing member is fixed by the top cover by projecting reinforcing ribs that match the inner shape of the top cover on both sides of the fixing member, and attaching the top cover to the lower housing. When the top cover is attached to the housing, the reinforcing rib protruding from the fixing member guides the top cover, so that it is easy to attach the top cover and the reinforcing rib is attached to the top cover after the top cover is attached. Since it is in close contact with the inside, the fixing member does not rattle.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view of a portable wireless device adopting a waterproof structure of a press talk switch device according to an embodiment of the present invention. FIG. 2 is an arrow view from the direction A in FIG. FIG. 4 is an exploded perspective view showing a waterproof structure of a press talk switch device in a portable wireless device according to an embodiment of the present invention. FIG. 5 shows a waterproof structure of a conventional press talk switch device. Illustration [Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Housing | casing 2 Lower housing | casing 2a Planar body 2b Groove 2c Long hole 2d Positioning protrusion 2e Bearing part 2f Locking protrusion 2g Locking groove 3 Press talk switch device 4 Waterproof member 4a, 4b Button part 4c Peripheral part 4d Projection 4e Concave 4f Protrusion 5 Flexible substrate 5a Tactile switch 5b Power switch 5c Wiring part 5d Positioning hole 6 Fixing member 6a, 6b Opening part 6c Reinforcement rib 6d Long hole 6e Locking hole 7 Press talk button 7a Shaft pin 7b Locking piece 7c For slip prevention Projection 7d Projection 8 Top cover 8a, 8b Opening 8c Locking portion

Claims (1)

The waterproof member is fixed to the outer surface of the lower housing of the portable wireless device by attaching a flexible substrate provided with a tact switch and covering the flexible substrate with a waterproof member formed of an elastic material. By waterproofing the tact switch,
The upper side of the fixing member, provided with press-to-talk button for operating the tact switch,
Reinforcing ribs that match the inner shape of the top cover are provided on both sides of the fixing member.
And by attaching the top cover to the lower housing, the fixing member is fixed by the top cover ,
Waterproof structure of press talk switch device in portable radio equipment.

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