Modularized pressure-sensitive key

Abstract

The utility model discloses a modularized pressure-sensitive button. The modularized pressure-sensitive button comprises a base; the gland is arranged on the base in a covering manner; a pressing signal acquisition circuit, wherein the pressing signal acquisition circuit is arranged in the base; the pressing signal acquisition circuit comprises a pressure sensor, and the inner surface of the gland abuts against the pressure sensor when the gland is pressed. According to the utility model, the pressure-sensitive keys are independent and modularized, so that the pressure-sensitive keys can be universally applied to various electronic devices. The method can be used for key control of electronic equipment, including but not limited to single-click, multi-click, stepless adjustment, standby wake-up and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of keys of electronic equipment, in particular to a modular pressure-sensitive key. Background Art

[0002] Pressure-sensitive buttons collect the pressure applied by the user on the button and then transmit it to the motherboard to determine whether the user has triggered the button.

[0003] At present, electronic devices with pressure-sensitive buttons on the market are integrated with the motherboard of the electronic device. The pins of the pressure sensor are directly soldered to the motherboard, and then a cover is added. That is, the existing pressure-sensitive buttons are limited by the motherboard of the electronic device, and a position needs to be reserved on the motherboard to install and fix the pressure-sensitive buttons. They often appear together with the electronic device, are not independent modules, and are not universal.

[0004] Therefore, the prior art needs to be improved. Utility Model Content

[0005] In view of the above-mentioned deficiencies in the prior art, an object of the present invention is to provide a modular pressure-sensitive key, aiming to make the pressure-sensitive key independent and modular so as to be applicable to various electronic devices.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A modular pressure-sensitive key, comprising: a base; a pressure cover, the pressure cover is arranged on the base; a pressure signal acquisition circuit, the pressure signal acquisition circuit is arranged in the base;

[0008] The pressing signal acquisition circuit includes a pressure sensor, and when the pressing cover is pressed, the inner surface of the pressing cover abuts against the pressure sensor.

[0009] In some examples, a transfer pin is also included, and the transfer pin is electrically connected to the pressure signal acquisition circuit for power supply and signal transmission.

[0010] In some examples, the transfer pin is cylindrical.

[0011] In some examples, the transfer pins are magnetic pins.

[0012] In some examples, a pressure block is disposed on the inner surface of the pressure cover to abut against the pressure sensor, and the pressure block is integrally formed with the pressure cover.

[0013] In some examples, the pressure signal acquisition circuit further includes an AD sampling chip, and the AD sampling chip is electrically connected to the pressure sensor and the adapter pin, respectively.

[0014] In some examples, the model of the AD sampling chip is ASD3001.

[0015] In some examples, the pressure sensor is model RH153M.

[0016] In some examples, the side wall of the base is provided with a locking step, and the side wall of the pressure cover is provided with a hook. When the pressure cover is placed on the base, the hook is abutted downward by the locking step and the inner surface of the pressure cover is abutted upward by the pressure sensor.

[0017] In some examples, the engaging step is disposed on the inner side wall of the base, and the hook is disposed on the outer side wall of the gland;

[0018] The inner side wall of the base is further provided with a sliding groove extending downward from the lower end surface of the engaging step, and the hook is embedded in the sliding groove and can slide up and down in the sliding groove.

[0019] It should be understood that within the scope of the present invention, the above-mentioned technical features of the present invention and the technical features specifically described below (such as implementation methods) can be combined with each other to form new or preferred technical solutions. Due to space limitations, they will not be described one by one here.

[0020] Beneficial effects of the utility model: The modular pressure-sensitive key of the utility model has an independent shell structure, namely a base and a pressure cover, a pressing signal acquisition circuit is arranged in the base, a pressure sensor is arranged in the pressing signal acquisition circuit, and the pressing signal acquisition circuit transmits the signal to the main board of the electronic device through a wired connection or a wireless connection. In this way, the utility model does not need to directly weld and fix the pressure sensor to the main board of the electronic device as in the prior art, but can be installed at any position of the electronic device, and then connected to the main board of the electronic device through a wired or wireless connection. The pressure-sensitive key of the utility model is a modular structure, which can be used in various electronic devices. After the pressure-sensitive key of the utility model is installed in different electronic devices, it can be used after configuring the corresponding communication protocol, which is simple and convenient. The modular pressure-sensitive key of the utility model can be used for key function control of electronic devices, including but not limited to single-click, multi-click, stepless adjustment, standby wake-up, etc. The stepless adjustment control includes the control of the sound volume in the electronic device, the control of the motor speed in the electronic device, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0022] Figure 1 This is a structural diagram of a first embodiment of a modular pressure-sensitive key of the utility model;

[0023] Figure 2 for Figure 1 Schematic diagram of the structure.

[0024] Figure 3 This is a circuit diagram of an embodiment of a modular pressure-sensitive key of the utility model;

[0025] Figure 4 for Figure 1 Schematic cross-section of the structure;

[0026] Figure 5 Schematic diagram of the base and gland.

[0027] Description of reference numerals:

[0028] 100-pressure-sensitive button, 10-base, 11-opening, 12-engaging step, 13-slide, 20-pressure cover, 21-pressure block, 22-hook, 30-pressing signal acquisition circuit, 31-pressure sensor, 32-AD sampling chip, 33-PCB board, 40-adapter pin, 41-power supply pin, 42-signal transmission pin. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0031] In the present invention, unless otherwise clearly specified and limited, the terms "electrical connection", "fixed", etc. should be understood in a broad sense. For example, "electrical connection" can be a fixed electrical connection, a detachable electrical connection, or an integrated electrical connection; it can be a mechanical electrical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] In addition, in the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features.

[0033] The specific embodiments are as follows:

[0034] Please refer to Figures 1 to 3 The utility model provides a modular pressure-sensitive button 100, comprising: a base 10 and a pressure cover 20, wherein the pressure cover 20 is covered on the base 10. The base 10 and the pressure cover 20 of this embodiment are both made of plastic. It can be understood that in other embodiments, the base 10 and the pressure cover 20 can also be made of other materials. The pressure cover 20 is used for the user to press the button to trigger the button.

[0035] The pressure-sensitive key 100 of this embodiment further includes a press signal acquisition circuit 30, and the press signal acquisition circuit 30 is disposed in the base 10. Thus, the cavity structure surrounded by the base 10 and the pressure cover 20 of this embodiment is used to accommodate the press signal acquisition circuit 30, and the base 10 and the pressure cover 20 form the outer shell of the entire pressure-sensitive key 100 and protect the press signal acquisition circuit 30 inside.

[0036] The pressing signal acquisition circuit 30 of this embodiment includes a pressure sensor 31. When the pressing cover 20 is pressed, the inner surface of the pressing cover 20 abuts against the pressure sensor 31. The pressure sensor 31 collects the pressure value and then outputs it to the outside through the pressing signal acquisition circuit 30.

[0037] In this embodiment, Figure 2 As shown, the pressure signal acquisition circuit 30 further includes a PCB board 33, which is installed in the base 10, and the pressure sensor 31 is installed on the PCB board 33. An opening 11 is provided at the upper end of the base 10, and the PCB board 33 is placed in the base 10 through the opening 11 for installation.

[0038] The pressure signal acquisition circuit 30 of this embodiment is provided with an output pin or a Bluetooth module. The output pin can be connected to the mainboard of the electronic device in a wired manner to transmit pressure data; or the pressure data can be wirelessly transmitted to the mainboard of the electronic device through the Bluetooth module.

[0039] Preferably, if Figure 3 As shown, the pressure signal acquisition circuit 30 of this embodiment further includes an AD sampling chip 32, and the AD sampling chip 32 is electrically connected to the pressure sensor 31. The AD sampling chip 32 is used to sample the pressure value of the pressure sensor 31 and convert it into a digital signal, and transmit the digital signal to the mainboard of the electronic device for processing, such as filtering, debouncing and key recognition.

[0040] As an implementation, the model of the AD sampling chip 32 of this embodiment is ASD3001. The ASD3001 chip has the advantages of collecting data blocks and high collection accuracy to meet the pressure value sampling of the pressure-sensitive button 100. It can be understood that in other embodiments, the AD sampling chip 32 can also adopt other models.

[0041] As an implementation, the model of the pressure sensor 31 in this embodiment is RH153M. The RH153M chip has a wide frequency band, high sensitivity, high signal-to-noise ratio, simple structure, and reliable operation. It can be understood that in other embodiments, the pressure sensor 31 can also adopt other models.

[0042] like Figures 1 to 3 As shown, the pressure-sensitive key 100 of this embodiment further includes a transfer pin 40, and the transfer pin 40 is electrically connected to the pressure signal acquisition circuit 30 for power supply and signal transmission. The AD sampling chip 32 of this embodiment is electrically connected to the transfer pin 40. That is, the transfer pin 40 of this embodiment is connected to the power supply from the external circuit to power the pressure signal acquisition circuit 30; and secondly, it outputs the pressure data signal to the outside.

[0043] The adapter pin 40 can be connected to the mainboard of the electronic device through a wire, so the pressure sensor 31 of this embodiment does not need to be directly soldered to the mainboard of the electronic device as in the prior art.

[0044] That is, the pressure-sensitive key 100 of the present invention is a modular structure with an independent base 10 and a pressure cover 20, so it can be installed at any position of the electronic device, and then the adapter pin 40 of the present invention is connected to the main board of the electronic device through a wire or welded on the main board through the adapter pin 40. That is, the pressure-sensitive key 100 of the present invention is completely independent of the electronic device, and is not limited to being fixed and welded with the main board of the electronic device, so that the pressure-sensitive key 100 of the present invention can be applied to different electronic devices.

[0045] Specifically, Figure 2 and Figure 3 As shown, the transfer pin 40 of this embodiment includes a power supply pin 41 and a signal transmission pin 42. The power supply pin 41 is connected to the first pin of the AD sampling chip 32, that is, Figure 3 The VDD pin of the U2 chip is connected to the power supply pin 41. The signal transmission pin 42 includes three pins: Press_ADC_P_DOUT, Press_ADC_N_SCLK and GPO pins, which are respectively connected to the 5th, 6th and 7th pins of the AD sampling chip 32. Figure 3 The SDA, SCL, and GPO pins of U2 and the GPO pin of the signal transmission pin 42 output different voltages when the pressure sensor 31 is pressed and not pressed, so as to control the operation of the Press_ADC_P_DOUT and Press_ADC_N_SCLK pins to realize data collection and transmission or stop data collection. The transfer pin 40 of this embodiment also includes a ground pin.

[0046] Figure 3 In the embodiment, the pressure sensor 31 is U1, the S- pin of U1 is connected to the AINP pin of U2, the S+ pin of U1 is connected to the AINN pin of U2, U1 transmits the pressure value to U2 through S- and S+, and the VCC pin of U1 is connected to the REFOUT pin of U2. That is, U1 of this embodiment is powered by U2, and U2 is powered by an external power supply through the power supply pin 41.

[0047] Preferably, if Figure 1 As shown, the adapter pin 40 of this embodiment is disposed through the bottom of the base 10 , so that it is convenient to connect the wires at the bottom of the pressure-sensitive button 100 .

[0048] Preferably, the adapter pin 40 of this embodiment is cylindrical, so that the pressure-sensitive button 100 can be placed stably.

[0049] Furthermore, the transfer pin 40 is a magnetic pin, which makes the transfer pin 40 magnetic, so that the pressure-sensitive key 100 of this embodiment is easy to be adsorbed and placed during carrying or transportation.

[0050] like Figure 4 As shown, in this embodiment, a pressing block 21 is provided on the inner surface of the pressing cover 20 to abut against the pressure sensor 31, and the pressing block 21 is integrally formed with the pressing cover 20. In this way, when the upper surface of the pressing cover 20 is pressed, the force is transmitted to the pressure sensor 31 through the pressing block 21. The setting of the pressing block 21 can make a large gap between the pressing cover 20 and the base 10, which is convenient for installing the AD sampling chip 32, and can still press on the pressure sensor 31.

[0051] Furthermore, if Figure 4As shown, the side wall of the base 10 is provided with a locking step 12, and the side wall of the gland 20 is provided with a hook 22. When the gland 20 is covered on the base 10, the hook 22 is abutted downward by the locking step 12, and the inner surface of the gland 20 is abutted upward by the pressure sensor 31. That is, when the gland 20 and the base 10 are assembled, the gland 20 is subjected to two forces, downward and upward, so that the gland 20 and the base 10 are assembled tightly. One is the pressure of the locking step 12 pressing the hook 22 downward, and the other is the thrust of the pressure sensor 31 pushing the pressure block 21 upward to push the gland 20 upward. Under the action of these two forces in opposite directions, the gland 20 can be firmly assembled with the base 10 without loosening.

[0052] Preferably, if Figure 4 and Figure 5 As shown, the engaging step 12 is arranged on the inner side wall of the base 10, and the hook 22 is arranged on the outer side wall of the gland 20; when installed in this way, the gland 20 can be embedded in the base 10, as shown in FIG. Figure 1 As shown in the figure, the outer wall of the gland 20 will be wrapped by the base 10, so that the key is more beautiful and space can be saved. In this embodiment, a plurality of hooks 22 are circumferentially arranged on the outer wall of the gland 20, and correspondingly, a plurality of engaging steps 12 are circumferentially arranged on the inner wall of the base 10, each hook 22 is engaged with a engaging step 12, so that the gland 20 can be balanced in force around it, will not be lifted, and can increase the firmness of the connection with the base 10.

[0053] Furthermore, the inner side wall of the base 10 of this embodiment is further provided with a slide groove 13 extending downward from the lower end surface of the engaging step 12, and the hook 22 is embedded in the slide groove 13 and can slide up and down in the slide groove 13. In this way, when the pressing cover 20 is pressed, the pressing cover 20 can move up and down as a whole within a certain range, and the pressing cover 20 is prevented from deforming downward in the middle of the pressing while the edge does not move, which is likely to cause fatigue damage caused by uneven force on the pressing cover 20 due to long-term pressing.

[0054] The modular pressure-sensitive key 100 proposed in the embodiment of the utility model is provided with an independent housing structure, namely a base 10 and a pressure cover 20, a pressure signal acquisition circuit 30 is provided in the base 10, and a pressure sensor 31 is provided in the pressure signal acquisition circuit 30. The pressure-sensitive key 100 of the utility model is a modular structure, which can be used in various electronic devices. After the pressure-sensitive key 100 of the utility model is installed in different electronic devices, it can be used after configuring the corresponding communication protocol, which is convenient and quick.

[0055] The above description is only an example to clearly illustrate the present invention, and does not limit the patent scope of the present invention. It is impossible to list all implementation methods here. All equivalent structural changes made by using the contents of the technical solution of the present invention under the concept of the present invention, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A modular pressure-sensitive button, characterized in that: include: Base; A gland, the gland cover is arranged on the base; A pressing signal acquisition circuit, wherein the pressing signal acquisition circuit is arranged in the base; The pressing signal acquisition circuit includes a pressure sensor, and when the pressing cover is pressed, the inner surface of the pressing cover abuts against the pressure sensor; It also includes a transfer pin, the transfer pin is electrically connected to the pressure signal acquisition circuit for power supply and signal transmission; The pressure signal acquisition circuit also includes an AD sampling chip, and the AD sampling chip is electrically connected to the pressure sensor and the adapter pin respectively.

2. The modular pressure-sensitive key according to claim 1, characterized in that: A pressing block is arranged on the inner surface of the pressing cover to abut against the pressure sensor, and the pressing block is integrally formed with the pressing cover.

3. The modular pressure-sensitive key according to claim 1, characterized in that: The side wall of the base is provided with a locking step, and the side wall of the pressure cover is provided with a hook. When the pressure cover is placed on the base, the hook is abutted downward by the locking step and the inner surface of the pressure cover is abutted upward by the pressure sensor.

4. The modular pressure-sensitive key according to claim 3, characterized in that: The engaging step is arranged on the inner side wall of the base, and the hook is arranged on the outer side wall of the gland; The inner side wall of the base is further provided with a sliding groove extending downward from the lower end surface of the engaging step, and the hook is embedded in the sliding groove and can slide up and down in the sliding groove.

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