JP2015532515A - Mobile terminal key component and mobile terminal - Google Patents

Abstract

An embodiment of the present invention discloses a key component and a mobile terminal of a mobile terminal, and the key component includes an adjustment dial, a rotary shaft, a lever, and a micro switch installed on a back surface of the mobile terminal, When the adjustment dial rotates, it is fixed to a rotation shaft, and the rotation of the rotation shaft and the lever is driven, and the bump on the lever triggers the micro switch.

Description

  The present invention relates to the technical field of mobile terminal structural design, and more specifically to a key component of a mobile terminal and a mobile terminal.

  Conventionally, a power key and a volume adjustment key of a mobile terminal (for example, a mobile phone) are usually pressed directly by a micro switch to avoid unintentional power on / off due to abnormal operation in the process of use, and when dropped In order to reduce the possibility of breakage of the micro switch due to impact, the design height of the power key is made as small as possible, but at the same time it has the negative effect that the elasticity of the key is somewhat small and the touch feels bad. Invited and can be operated smoothly only with nails as needed.

  In addition, in response to an application request for increasing the screen size of a conventional mobile terminal, the key is located at the side position, which causes inconvenience in one-handed operation (for example, the left-handed key interferes with the operation). .

  In short, the key of the mobile terminal in the related art is a large screen mobile terminal when the volume adjustment key and the power key are separately arranged on the top surface or the side surface, occupy a relatively large space, and the key is located at the side surface position. There are defects and disadvantages that are disadvantageous to the operation.

  Embodiments of the present invention provide a key component of a mobile terminal and a mobile terminal that can improve the convenience of operation and environmental reliability.

  A key component of a mobile terminal according to an embodiment of the present invention includes an adjustment dial, a rotary shaft, a lever, and a micro switch installed on a back surface of the mobile terminal, and the adjustment dial is fixed to the rotary shaft, and the adjustment When the dial rotates, it drives the rotation of the rotating shaft and the lever, and the bump on the lever triggers the microswitch.

  Preferably, the number of the microswitches is two.

  Preferably, the microswitch is connected to a motherboard of the mobile terminal.

  Preferably, the key component further includes an intermediate keycap, a metal dome array (DOME) sheet, a printed circuit board (PCB), and a contact dome that are sequentially installed below the intermediate keycap, When the intermediate keycap is pressed independently from the adjustment dial and when the intermediate keycap is pressed, the DOME sheet is deformed to contact the PCB, turn on the printed circuit on the PCB substrate, and the contact dome. Realize continuity.

  Preferably, the intermediate key cap is fixed to silica gel, and when the intermediate key cap is pressed, pressure is transmitted to the DOME sheet by the silica gel.

  Preferably, the contact dome is connected to the PCB by a flexible circuit board (FPC).

  Preferably, the contact dome is connected to a motherboard of the mobile terminal.

  Preferably, the key component further includes a fixing ring for fixing the rotating shaft.

  An embodiment of the present invention further provides a mobile terminal comprising a key component of the mobile terminal.

  An embodiment of the present invention provides a key component of a mobile terminal, combines a power key and a volume key into a set of keys, and arranges them at the center position on the back side of the mobile phone terminal, thereby enabling some of the large screen mobile terminals. When the main key is located on the side of the mobile terminal, the defect that it is inconvenient for one-handed operation is solved, and the defect such as the reliability that the micro switch is likely to be erroneously operated and the micro switch is likely to fail in the drop environment test is avoided.

  According to the key component according to the embodiment of the present invention, the main key of the large screen mobile terminal can be easily operated with one hand, the erroneous operation rate is reduced, and the reliability is improved.

FIG. 1 is a schematic exploded view of a key component according to an embodiment of the present invention. FIG. 2 is a front view of the key component according to the embodiment of the present invention. FIG. 3 is a rear view of the key component according to the embodiment of the present invention. FIG. 4 is an isometric view of a key component according to an embodiment of the present invention.

  This embodiment provides a key component of a mobile terminal and uses the following technical solutions.

  The key component includes an adjustment dial, a rotary shaft, a lever, and a micro switch that are installed on the back surface of the mobile terminal, and the adjustment dial is fixed to the rotary shaft, and the rotary dial rotates when the rotary dial rotates. And driving the rotation of the lever, and a bump on the lever triggers the microswitch.

  Preferably, the key component further includes an intermediate keycap, a metal dome array (DOME) sheet, a printed circuit board (PCB), and a contact dome that are sequentially installed below the intermediate keycap, An intermediate keycap is fixed to the rotating shaft independently of the adjustment dial, and when the intermediate keycap is pressed, the DOME sheet is deformed to contact the PCB substrate and turn on the printed circuit on the PCB substrate. And the conduction of the contact dome is realized.

  Preferably, the key component further includes a fixing ring for fixing the rotating shaft.

  Preferably, the intermediate key cap is fixed to silica gel, and when the intermediate key cap is pressed, pressure is transmitted to the DOME sheet by the silica gel.

  Preferably, the contact dome is connected to the PCB by a flexible printed circuit (FPC).

  This embodiment further provides a mobile terminal comprising the key component of the mobile terminal.

  The key component of the mobile terminal according to the present embodiment has a power key and a volume adjustment key arranged at the center position on the back of the terminal, uses a DOME form as the power key, and a knob on the volume adjustment dial rotates for volume adjustment. On the other hand, a dial rotation adjustment system that achieves the purpose of adjusting the volume by pressing the micro switch is used.

  According to the key component of the mobile terminal of this embodiment, instead of the conventional direct pressing method, the rotation switch is used, and the pressure perpendicular to the dial surface is not directly urged to the micro switch. Contributes to protection. The operation method of the power key is the same as that of a normal DOME type key, and the key cap is hidden under the volume key dial plane, making it difficult for the power key to be turned on by a normal operation error, and to apply an impact force during the fall process. Reliability is improved without receiving it directly.

  As shown in FIG. 1, in this embodiment, the specific components of the key components of the mobile terminal are mainly the adjustment dial 1, the intermediate key cap 2, the silica gel 3, the DOME sheet 4, the PCB substrate 5, and the rotating shaft 6. , Lever 7, fixing ring 8 (which may be, but not limited to, an E-type ring), micro switch 9 (A and B 2 pieces), FPC 10, contact dome 11 (two pieces), and case 12.

  The PCB 5 is fixed to the cavity of the rotary shaft 6, and the DOME sheet 4 is fixed by being attached to the PCB 5 with a film (not shown) located above the DOME sheet 4. The rotary shaft 6, silica gel 3 and adjustment dial 1 are fixed together, the intermediate keycap 2 is fixed to the silica gel 3, and the intermediate keycap 2 and the adjustment dial 1 move relatively independently. Can do. The illustrated E-shaped ring 8 is used to fix the rotating shaft 6. The microswitch 9 and the contact dome 11 are mounted and welded (not shown) to the motherboard PCB by an SMT (Surface Mounted Technology) process. The contact dome 11 (two pieces) is connected to the PCB 5 by the FPC board 10, one end thereof is fixed to the case 12 and fixed, and the other end is fixed to the PCB 5 by welding.

  The specific operation of the key component of the mobile terminal according to the present invention will be described below. The lever 7 is driven by the rotating shaft 6 and can be rotated clockwise and counterclockwise at a small angle. The volume of the sound is controlled by controlling the operation. The driving force of the rotary shaft 6 is obtained by urging the adjustment dial 1 with the user's hand.

  The conduction of the two contact domes 11 is realized by pressing the DOME sheet 4 and turning on the circuit in the PCB 5. The intermediate keycap 2 is pressed by hand and the pressure is transmitted to the DOME sheet 4 by the silica gel 3. Until the printed circuit in the PCB 5 is turned on, the DOME sheet 4 is deformed and approaches the PCB substrate 5 to realize conduction of the contact dome 11.

  Although it is desirable to describe the features and spirit of the present invention more clearly in combination with the above drawings and detailed description of specific embodiments, the above is for interpreting the preferred embodiments of the present invention. The present invention is not limited to any form. Although named as “power key”, “volume adjustment key”, etc., the function is not limited to the function of the power switch or volume adjustment switch, and may be a switch that realizes other functions. Therefore, any improvement or change related to the present invention made with the same creative spirit belongs to the protection scope of the present invention.

According to the key component of the mobile terminal according to the embodiment of the present invention, the main key of the large screen mobile terminal can be easily operated with one hand, the erroneous operation rate is reduced, and the reliability is improved.

Claims (9)

Including an adjustment dial, rotating shaft, lever, and microswitch installed on the back of the mobile terminal,
A key component of a mobile terminal in which the adjustment dial is fixed to the rotation shaft, and when the adjustment dial is rotated, the rotation shaft and the lever are driven to rotate, and a bump on the lever triggers the microswitch.   The key component of the mobile terminal according to claim 1, wherein the number of microswitches is two.   The key component of the mobile terminal according to claim 1, wherein the micro switch is connected to a motherboard of the mobile terminal. An intermediate keycap, and a metal dome array (DOME) sheet, a printed circuit board (PCB), and a contact dome that are sequentially installed below the intermediate keycap;
The intermediate keycap and the adjustment dial are fixed to the rotating shaft independently of each other;
2. The mobile terminal according to claim 1, wherein when the intermediate keycap is pressed, the DOME sheet is deformed to contact the PCB, turn on a printed circuit on the PCB substrate, and realize conduction of the contact dome. Key component.   The key component of the mobile terminal according to claim 4, wherein when the intermediate keycap is fixed to silica gel and the intermediate keycap is pressed, pressure is transmitted to the DOME sheet by the silica gel.   The key component of a mobile terminal according to claim 3, wherein the contact dome is connected to the PCB by a flexible circuit board (FPC).   The key component of the mobile terminal according to any one of claims 4 to 6, wherein the contact dome is installed so as to be connected to a mother board of the mobile terminal.   The key component of the mobile terminal according to claim 1, further comprising a fixing ring for fixing the rotating shaft. The mobile terminal containing the key component of the mobile terminal of any one of Claims 1-8.

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