CN106850907A - Mobile terminal housing assembly with keys and mobile terminal - Google Patents

Abstract

The application provides a mobile terminal housing assembly and mobile terminal with button, wherein, the mobile terminal housing assembly who has the button includes: a housing; the mobile terminal comprises a shell, a key touch panel and a pressure sensing element, wherein the front surface of the key touch panel is used for being pressed by a user to generate deformation, the back surface of the key touch panel is provided with the pressure sensing element, the pressure sensing element is electrically connected with a circuit board of the mobile terminal and used for detecting pressing force transmitted from the key touch panel and sending a trigger signal when the pressing force is larger than a preset value, and the circuit board is used for receiving the trigger signal and generating a corresponding control signal to control the mobile terminal. Therefore, the waterproof performance of the keys on the mobile terminal is improved, and the attractiveness of the mobile terminal is improved.

Description

Mobile terminal housing assembly with keys and mobile terminal

technical field

The present application relates to the technical field of mobile terminal manufacturing, in particular to a mobile terminal shell assembly with keys and a mobile terminal.

Background technique

At present, with the popularity of mobile terminals (such as mobile phones), the functions of mobile terminals are becoming more and more diversified. For example, there are more or less function keys on the mobile terminal, such as volume keys, power on and off keys, etc. The buttons perform, for example, volume control, power on/off control, and the like on the mobile terminal.

In related technologies, the above-mentioned buttons are all mechanically movable physical buttons. When the user presses such a button, the button will have a process and a return trip, and external water stains and dust can easily enter the mobile phone through the gaps around the button. inside the terminal, thereby affecting the performance of the mobile terminal.

Contents of the invention

The purpose of this application is to solve one of the technical problems in the related art at least to a certain extent.

For this reason, the first purpose of this application is to propose a mobile terminal housing assembly with buttons, which improves the waterproof performance of the buttons on the mobile terminal and improves the aesthetics of the mobile terminal . The second purpose of the present application is to propose a mobile terminal.

In order to realize the above-mentioned embodiments, the mobile terminal casing assembly with buttons proposed in the first aspect of the present application includes: a casing; and a button touch panel formed on the casing, the front of the button touch panel is used For the user to press to generate deformation, the back of the button touch panel is provided with a pressure sensing element, wherein the pressure sensing element is electrically connected to the circuit board of the mobile terminal, and the pressure sensing element is used to detect the pressure from the button touch panel The transmitted pressing force, and sending a trigger signal when the pressing force is greater than a preset value, the circuit board is used to receive the trigger signal and generate a corresponding control signal to control the mobile terminal.

In the mobile terminal housing assembly with keys in the embodiment of the present application, a pressure sensing element is arranged on the back of the key touch panel, and the pressure sensing element is electrically connected to the circuit board of the mobile terminal, and the pressure sensing element detects the pressing force transmitted from the key touch panel The pressure, and when the pressing force is greater than a preset value, a trigger signal is sent, and then the circuit board generates a corresponding control signal according to the received trigger signal to control the mobile terminal. Thus, the waterproof performance of the keys on the mobile terminal is improved, and the aesthetics of the mobile terminal is improved.

In order to realize the above-mentioned embodiments, the mobile terminal proposed in the second embodiment of the present application includes a display screen, and the mobile terminal casing assembly with buttons as described in the embodiment of the first aspect of the application, and the casing assembly is surrounded by Around the display screen, the circuit board is arranged in an inner space formed before the display screen and the casing assembly.

The mobile terminal according to the embodiment of the present application includes a mobile terminal housing assembly with keys. In the mobile terminal housing assembly with keys, a pressure sensing element is provided on the back of the key touch panel, and the pressure sensing element is electrically connected to the circuit board of the mobile terminal. connected, the pressure sensing element detects the pressing force transmitted from the button touch panel, and sends a trigger signal when the pressing force is greater than a preset value, and then the circuit board generates a corresponding control signal according to the received trigger signal to control the mobile terminal. Thus, the waterproof performance of the keys on the mobile terminal is improved, and the aesthetics of the mobile terminal is improved.

Advantages of additional aspects of the application will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the application.

Description of drawings

The above and/or additional aspects and advantages of the present application will become apparent and easy to understand from the following description of the embodiments in conjunction with the accompanying drawings, wherein:

FIG. 1 is a schematic structural diagram of a mobile terminal housing assembly with keys according to an embodiment of the present application;

Figure 2(a) is a schematic diagram of a pressure sensing element according to an embodiment of the present application;

Figure 2(b) is a schematic diagram of the circuit where the pressure sensing element is located according to an embodiment of the present application;

FIG. 3 is a schematic structural diagram of a mobile terminal housing assembly with keys according to another embodiment of the present application;

4 is a schematic cross-sectional view of a mobile terminal housing assembly with buttons according to an embodiment of the present application;

Figure 5(a) is a schematic diagram of the effect of a mobile terminal housing assembly with buttons according to an embodiment of the present application;

Figure 5(b) is a schematic diagram of the effect of a mobile terminal housing assembly with buttons according to another embodiment of the present application; and

Fig. 6 is a schematic structural diagram of a mobile terminal according to an embodiment of the present application.

detailed description

Embodiments of the present application are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary, and are intended to explain the present application, and should not be construed as limiting the present application.

The following describes the mobile terminal housing assembly with keys and the mobile terminal according to the embodiments of the present application with reference to the accompanying drawings. Wherein, the mobile terminal may be a hardware device with external function keys such as a mobile phone, a tablet computer, a personal digital assistant, or a wearable device, and the wearable device may be a smart bracelet, a smart watch, or smart glasses.

Fig. 1 is a schematic structural diagram of a mobile terminal housing assembly with buttons according to an embodiment of the present application. As shown in Fig. 1, the mobile terminal housing assembly with buttons includes:

Housing 1 , button touch panel 2 and pressure sensing element 3 .

Wherein, the housing 1 can be made of different materials in different application scenarios, such as plastic material, glass material, etc. In one embodiment of the present application, the mobile terminal made of metal is more and more The more favored by consumers, increasing the proportion of metal components in the entire mobile phone has become the main direction pursued by major manufacturers. Therefore, in order to further improve the aesthetics of the mobile terminal, the casing of the mobile terminal is preferably a metal casing.

Among them, it needs to be emphasized that in the related art, in order to improve the waterproof performance of the keys in the mobile terminal, the capacitive principle is used to realize the key function, and the principle of detecting the voltage through the capacitive sensor replaces the physical key. However, in this technical solution, Since it is a capacitive button, it must be ensured that the panel of the terminal device is a capacitive screen, which cannot realize the metal frame of the mobile terminal, and neither can improve the aesthetics of the mobile terminal device. Moreover, according to the principle of detecting voltage by a capacitive sensor, the capacitive button Any collision of the will cause a false trigger.

The button touch panel 2 is formed on the housing 1 , wherein the front side of the button touch panel 2 is used to be pressed by a user to generate deformation, and the back side of the button touch panel 2 is provided with a pressure sensing element 3 .

Wherein, the pressure sensing element 3 is electrically connected with the board of the mobile terminal, the pressure sensing element 3 is used to detect the pressing force transmitted from the button touch panel 2, and sends a trigger signal when the pressing force is greater than a preset value, and the circuit board is used to receive Trigger the signal and generate a corresponding control signal to control the mobile terminal. For example, if the trigger signal triggers the volume up key, the mobile terminal is controlled to increase the volume.

It can be understood that the above-mentioned preset value for pressing force is calibrated according to a large number of experiments, and is used to define whether the current pressing force belongs to false triggering, or belongs to the user's own triggering according to the operation intention. When the pressure sensed by the pressure sensing element 3 is greater than the If the preset value is selected, the corresponding response operation is performed on the pressing force. When the pressure sensed by the pressure sensing element 3 is not greater than the preset value, the current trigger is considered to be a false trigger, such as the trigger of the cloth in the pocket being squeezed, etc. Therefore, it does not respond to the pressing force.

Based on the above description, in the embodiment of the present application, before the corresponding response operation is performed on the pressing force, the pressing force is compared with the preset value, so as to only respond to the pressing force independently implemented by the user according to the operation intention. Compared with the capacitive The pressure sensor technology can effectively avoid false triggering.

It should be noted that, in a specific implementation process, according to different specific application scenarios, the number of pressure sensing elements 3 may be multiple, and the pressure sensing elements 3 may be different micro pressure sensors.

As a possible implementation, the pressure sensing element 3 can be composed of a full-bridge circuit composed of four resistors, so that the touch panel 1 receives a pressing force through the full-bridge circuit arranged on the back of the touch panel 1 of the mobile terminal. When a slight deformation occurs, the resistance of the bridge judges the magnitude of the applied pressing force according to the change of the voltage difference between the two ends of a pair of resistances.

In this embodiment, as shown in Figure 2(a), when the full bridge circuit is composed of varistors R1, R2, R3 and R4 connected end to end with the same resistance, when the varistor is not pressed When the pressure acts, all the resistance values in the bridge are equal, the resistance values of the two opposite resistances increase, and the resistance values of the other two resistances will decrease, so that the change in voltage is converted into the corresponding voltage value, so that According to the change of the voltage value, the magnitude of the pressing force is obtained.

For example, as shown in Figure 2(b), when the resistance values of the resistors R2 and R3 are both reduced by 1% when the pressing force is received, the values of the resistors R1 and R4 are increased by 1%, then the two " The voltage value between the "middle" points will change from 0 to 2%, and then, the voltage value can be amplified to a level suitable for the ADC, and then the ADC will convert the amplified sensor output voltage into digital, and then exchange Process the controller or DSP in the circuit board to know the current pressing force.

Further, in order to buffer the pressing force and avoid damage to the key touch panel 2 and the pressure detecting element 3 due to the pressure when the key touch panel 2 and the pressure detection element 3 are in contact under the action of the pressing force, In one embodiment of the present application, referring to the schematic structural diagram of a mobile terminal housing assembly with keys according to another embodiment of the present application shown in FIG. 3 , a buffer is provided between the key touch panel 2 and the pressure detection element 3 Pressure elastic element 4.

Wherein, the elastic element 4 can be rubber, a foam layer, etc., and the specific material of the elastic element 4 can be selected according to a specific application scenario, and is not limited here.

In addition, continue to refer to FIG. 3 , in order to press the pressure detection element 3 from top to bottom to generate internal pressure for it to transmit the pressing force from the key touch panel 2 , in one embodiment of the present application, the elastic element 4 In addition to the first elastic member 41 for buffering pressure, it also includes a second elastic member 42 for supporting. The second elastic member 42 can deform and return to a normal state after the external force disappears.

Wherein, the second elastic member 42 can be regarded as a substrate, etc., the second elastic member 42 is plate-shaped, and the stiffness of the second elastic member 42 is greater than that of the first elastic member 41. Similarly, the material of the second elastic member 42 is also It can be selected according to specific application scenarios, and there is no limitation here.

It should be noted that, in the actual operation process, in order to avoid errors caused by the attenuation of the pressing force transmission, it is necessary to reduce the gap between the second elastic member 42 and the pressure detection element 3, for example, the second elastic member 42 and the pressure detection element 3 squeeze together, etc., or use an adhesive device to stick the second elastic member 42 and the pressure detection element 3 together, etc.

As a possible implementation manner, the second elastic member 42 and the pressure sensing element 3 are bonded together through an adhesive layer, wherein the adhesive layer may be an epoxy adhesive film, an acrylic adhesive film, or the like.

Furthermore, in order to apply pressure on the back of the pressure sensing element 3 from bottom to top to detect the pressing force, continue to refer to FIG. The back supporting member 5 of the element 3 provides firm and stable support for the entire mobile terminal casing assembly with keys at the same time, so as to fix the entire mobile terminal casing assembly with buttons.

And based on the same principle, in order to avoid damage to the pressure sensing element 3 and the equipment components located below the pressure sensing element 3 by the pressing force, continue to refer to FIG. Three elastic elements 6, the third elastic element 6 can also effectively absorb assembly interference problems caused by installation errors.

Wherein, the back support member 5 is plate-shaped, and different materials can be selected according to different application scenarios, and the material of the third elastic member 6 can also be selected according to different application scenarios, for example, it can be a foam layer.

It should be emphasized that whether it is the first elastic member 41 or the third elastic member 6, its size, quantity and relative position can be selected according to the application scenario. For example, there is one first elastic member 41, which is arranged on the button The center positions of the touch panel 2 and the second elastic member 42 , for example, the number of the first elastic members 41 may be three, which are evenly spaced between the key touch panel 2 and the second elastic member 42 . For example, the number of the third elastic elements 6 is two, and the two third elastic elements 6 are respectively arranged on the two side edges of the pressure sensing element 3 .

Based on the above description, in order to make the structure of the mobile terminal housing assembly with keys clearer for those skilled in the art, the following is a schematic cross-sectional view of the mobile terminal housing assembly with keys as shown in Figure 4. example.

Wherein, in this example, there is one first elastic member 41, which is arranged at the central position of the key touch panel 2 and the second elastic member 42, the first elastic member 41 is a foam layer, and the second elastic member 42 is represented by a substrate, The number of the third elastic element 6 is two, the second elastic member 42 and the pressure sensing element 3 are connected by an epoxy glue film, and the two third elastic elements 6 are respectively arranged on the two side edges of the pressure sensing element 3, the second The three elastic elements 6 are foam layers.

Specifically, referring to FIG. 4 , in one embodiment of the present application, in the mobile terminal housing assembly with buttons, from top to bottom are button touch panel, foam layer, substrate, epoxy film, pressure sensor Elements, foam layer and back support. Therefore, after receiving the pressing force exerted by the user on the key touch panel, the pressing force is transmitted to the substrate through the buffer of the foam layer, and passes through the foam layer from the substrate to the pressure sensing element, thus, the pressure sensing element will After the pressing force is transmitted to the back support through the foam layer, the bottom-up internal pressure provided by the back support is felt, and the pressing force is detected according to the internal pressure.

Therefore, the mobile terminal housing assembly with buttons in the embodiment of the present application responds to the external pressing force only when the pressure sensing element 3 detects a certain value of pressure, and since the pressure sensing element 3 is arranged on the key touch The lower part of the panel 2 has a better waterproof effect than traditional mechanical keys.

At the same time, the button does not depend on the material of the button touch panel to implement the function, that is, no matter what the material of the button touch panel is, as long as it can transmit pressure, the button can be used as a metal button, which greatly improves the metal function of the mobile terminal. ratio, improving the aesthetics of the mobile terminal.

Of course, in the actual operation process, the specific implementation effect of the button can be varied. For example, as shown in FIG. 5(a), in order to further improve the aesthetics of the mobile terminal, the button touch panel where the button is located is integrated As a whole, only mark the function keys at the corresponding positions on the surface of the housing, or, as shown in Figure 5(b), in order to further avoid false triggering of the keys, the front of the touch panel where the keys are located is lower than the front of the housing. On, the keys touch the surrounding surface of the panel.

In summary, in the mobile terminal housing assembly with buttons in the embodiment of the present application, a pressure sensing element is provided on the back of the key touch panel, and the pressure sensing element is electrically connected to the circuit board of the mobile terminal. The pressure sensing element detects the touch from the key The pressing force transmitted by the panel sends a trigger signal when the pressing force is greater than a preset value, and then the circuit board generates a corresponding control signal according to the received trigger signal to control the mobile terminal. Thus, the waterproof performance of the keys on the mobile terminal is improved, and the aesthetics of the mobile terminal is improved.

In order to realize the above embodiments, the present application also proposes a mobile terminal.

FIG. 6 is a schematic structural diagram of a mobile terminal according to an embodiment of the present application. As shown in FIG. Surrounding the display screen, the circuit board 300 is disposed in the inner space formed before the display screen and the housing assembly.

It should be noted that, for the functional description of the mobile terminal housing assembly 200 with buttons, refer to the above description in conjunction with FIG. 1-FIG.

To sum up, the mobile terminal of the embodiment of the present application includes a mobile terminal housing assembly with buttons. In the mobile terminal housing assembly with buttons, a pressure sensing element is provided on the back of the key touch panel, and the pressure sensing element is connected to the mobile terminal. The circuit board of the terminal is electrically connected, and the pressure sensing element detects the pressing force transmitted from the key touch panel, and sends a trigger signal when the pressing force is greater than a preset value, and then the circuit board generates a corresponding control signal according to the received trigger signal to control mobile terminal. Thus, the waterproof performance of the keys on the mobile terminal is improved, and the aesthetics of the mobile terminal is improved.

In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inner", "Outer", "Clockwise", "Counterclockwise", "Axial" , "radial", "circumferential" and other indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the application and simplifying the description, rather than indicating or implying the referred device or Elements must have certain orientations, be constructed and operate in certain orientations, and thus should not be construed as limiting the application.

In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, a feature defined as "first" and "second" may explicitly or implicitly include one or more of these features. In the description of the present application, "plurality" means two or more, unless otherwise specifically defined.

In this application, terms such as "installation", "connection", "connection" and "fixation" should be interpreted in a broad sense, for example, it can be a fixed connection or a detachable connection, unless otherwise clearly specified and limited. , or integrated; it can be directly connected or indirectly connected through an intermediary, it can be the internal communication of two elements or the interaction relationship between two elements. Those of ordinary skill in the art can understand the specific meanings of the above terms in this application according to specific situations.

In the present application, unless otherwise clearly specified and limited, a first feature being "on" or "under" a second feature may mean that the first and second features are in direct contact, or that the first and second features are indirect through an intermediary. touch.

In the description of this application, reference to the terms "one embodiment," "some embodiments," "example," "specific examples," or "some examples" means that specific features described in connection with that embodiment or example , structure, material or characteristic is included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the described specific features, structures, materials or characteristics may be combined in any suitable manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine different embodiments or examples and features of different embodiments or examples described in this specification without conflicting with each other.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and are not intended to limit it; although the application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: It is still possible to modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the technical solutions of the various embodiments of the present application. scope.

Claims (13)

1. a kind of mobile terminal shell component with button, it is characterised in that including：

Housing；

The button touch panel on the housing is formed at, the front of the button touch panel is used to produce shape for user's pressing Become, the back side of the button touch panel is provided with pressure responsive element, wherein,

The pressure responsive element is electrically connected with the circuit board of mobile terminal, and the pressure responsive element is used to detect presses from described The pressing force that key touch panel is transmitted, and trigger signal is sent when pressing force is more than preset value, the circuit board is used to connect Receive the trigger signal and produce corresponding control signal to control the mobile terminal.

2. the mobile terminal shell component with button according to claim 1, it is characterised in that the housing is metal Housing.

3. the mobile terminal shell component with button according to claim 1, it is characterised in that touched in the button Flexible member is additionally provided between panel and the pressure responsive element.

4. the mobile terminal shell component with button according to claim 3, it is characterised in that the flexible member bag The first elastic component and the second elastic component are included, second elastic component is plate-like, and the rigidity of second elastic component is more than first The rigidity of elastic component.

5. the mobile terminal shell component with button according to claim 4, it is characterised in that first elastic component It is foamed cotton layer.

6. the mobile terminal shell component with button according to claim 4 or 5, it is characterised in that second bullet Property part is bonded together with the pressure responsive element by tack coat.

7. the mobile terminal shell component with button according to claim 6, it is characterised in that the tack coat is ring Oxygen glued membrane.

8. the mobile terminal shell component with button according to claim 1, it is characterised in that in the pressure sensitive The side of the button touch panel is provided with back support for supporting the pressure responsive element on element.

9. the mobile terminal shell component with button according to claim 8, it is characterised in that in the back-supported The 3rd elastic component is additionally provided between part and the pressure responsive element.

10. the mobile terminal shell component with button according to claim 9, it is characterised in that the 3rd elasticity Part is foamed cotton layer.

The 11. mobile terminal shell component with button according to claim 9 or 10, it is characterised in that the described 3rd The quantity of elastic component is two, and two the 3rd elastic components are separately positioned on the both sides of the edge of the pressure responsive element.

The 12. mobile terminal shell components with button according to claim 1, it is characterised in that the button is touched Circumferential surface of the front of panel less than on the housing, the button touch panel.

13. a kind of mobile terminals, it is characterised in that including display screen, and having as described in claim any one of 1-12 The mobile terminal shell component of button, the housing unit encloses and is located at around the display screen, and the circuit board is arranged on described In the inner space formed before display screen and the housing unit.