Voice broadcast box, control key and assembling method
A voice broadcast, box control technology, applied in data recording, digital memory information, instruments, etc., can solve problems such as low efficiency, achieve the effect of user convenience, loud sound, and ensure position accuracy
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Embodiment 1
[0047] like figure 1 and Figure 4 As shown, this voice announcement box control key A is installed on the rear cover 1, the rear cover 1 is a housing structure with an accommodating chamber, and there are several avoidance holes 13 on the rear cover 1 for the control of the voice announcement box control key A. The button 3 is installed to avoid, that is, the control button 3 will pass through the avoidance hole 13 to form a state of being exposed on the rear surface of the back cover 1 to facilitate the user's manipulation and pressing.
[0048] Specifically, as Figure 5-Figure 6 As shown, the control key base 2 in this embodiment includes a central control key installation cylinder 20, a side control key installation cylinder 21, a connecting elastic arm 22 and a limiting protrusion 23, which are made of elastic plastic material or silica gel and are integrally formed by injection molding.
[0049] The connecting elastic arm 22 has a certain elastic force, so as to play ...
Embodiment 2
[0065] like Figure 1-Figure 6 As shown, the present embodiment provides a voice announcement box including a rear cover 1 and a front cover 5 that opens and closes the rear cover 1, a panel 8 is installed on the front cover 5, and the voice announcement box also includes a built-in rear cover 1 and a front cover 5. The cover 5 forms the control circuit 4 in the inner chamber, and the control circuit 4 is connected with a speaker.
[0066] The rear cover 1 is provided with grid holes 14 corresponding to the speakers, so as to facilitate the external transmission of sound.
[0067] The control circuit 4 is connected to the battery 7 in the inner chamber, and the battery 7 is a rechargeable battery or dry battery. Of course, the control circuit 4 can also be connected to a power cord with a plug, and the plug is electrically connected to the external mains.
[0068] Specifically, as Figure 7 As shown, the control circuit 4 of this embodiment includes a main control unit circu...
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