Opening and closing detector for folding mobile communication terminal
A mobile communication terminal and detection device technology, applied in the direction of telephone communication, telephone structure, branch office equipment, etc., can solve the problems of increasing manufacturing costs, reducing reliability, and prone to error operations, etc., and achieve the effect of reducing the number of components
Inactive Publication Date: 2006-02-08
LG ELECTRONICS (CHINA) R&D CENT CO LTD
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- Application Information
AI Technical Summary
Problems solved by technology
[0006] However, the opening and closing detection device of the foldable mobile communication terminal as described above has the problem that the magnetic body 130 and the magnetic force detection sensor 140 are easily affected by the surrounding environment, so it is prone to malfunction, thereby reducing the reliability.
[0007] However, in addition to such a magnetic body, it has been proposed to use various opening and closing detection devices using infrared rays or vibrations such as vibrators, but such opening and closing detection devices have a problem of increasing manufacturing costs.
Method used
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[0021] refer to figure 1 and figure 2 To illustrate the structure of the opening and closing detection device of the foldable mobile communication terminal of the present invention, figure 1 It is an exploded schematic diagram of the structure of the opening and closing detection device of the foldable mobile communication terminal according to an embodiment of the present invention; figure 2 for figure 1 A simplified schematic diagram of the principle of the variable resistor shown.
[0022] figure 1 and figure 2 The opening and closing detection device of the foldable mobile communication terminal of the present invention shown includes a variable resistor 30 and a control unit (not shown).
[0023] The body 10 is provided with a keypad 12 with numeric keys and various function keys, a speaking part 14 with a microphone is provided below the keypad, and a pair of side hinge arms 16 are provided above the keypad.
[0024] The flip cover 20 has a central hinge arm...
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The present invention relates to an opening and closing detector for folding mobile communication terminal, which detects the opening and closing state of the flip acoording to the resistor value of a variable resistance changing with the rotational movement of the flip, so as to reduce the number of the detector components. The characteristics of the present invention include: a variable resistor, whose resistor value changes according to the movement of the flip; a control portion, which identifies the opening and closing state of the flip according to changes of the current value or the voltage value, induced by the resistor value changes of value variable resistor. The characteristics of the invention also lies in that: the variable resistor is fixed and installed in the hinge, whose middle part extrudes to form a rotor, which can be rotatably connected with the flip to change the resistance value according to the rotation changes of the flip. Moreover, the present invention can reduce the number of components installed in the opening and closing detector so as to reduce manufacturing costs and increase production.
Description
technical field [0001] The invention relates to an opening and closing detection device of a folding mobile communication terminal, in particular to a folding type mobile communication terminal that detects the opening and closing state of the flip according to the resistance value of the variable resistor that changes with the rotation of the flip, thereby reducing the number of components of the opening and closing detection device. An opening and closing detection device for a mobile communication terminal. Background technique [0002] Generally, a foldable mobile communication terminal is equipped with an opening and closing detection sensor for detecting the opening and closing state of the terminal, which automatically executes various procedures for connecting or disconnecting the power supply of the display part according to the opening and closing state of the flip cover. [0003] Refer below image 3 The structure of the opening / closing detection device of the con...
Claims
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Patent Timeline
Login to View More IPC IPC(8): H04B1/00H04M1/02
CPCH04M1/0216H04M1/0245H04M2201/34
Inventor 李玄淑
Owner LG ELECTRONICS (CHINA) R&D CENT CO LTD