Pressure touch module and electronic equipment

Abstract

The embodiment of the utility model provides a pressure touch module and electronic equipment. The module comprises a key panel, an elastic sheet, a bearing circuit board and a pressure sensor, the edge area of the elastic sheet is used for being fixed in the shell; the key panel is arranged on the first surface of the elastic sheet; the bearing circuit board is arranged on the second surface of the elastic sheet; the pressure sensor is arranged on one side, deviating from the key panel, of the bearing circuit board and corresponds to the deformation area of the elastic sheet; the bearing circuit board is used for being connected with the control circuit board so as to lead out a pressure signal detected by the pressure sensor to the control circuit board. When the key panel is pressed, the elastic sheet is pressed to deform, and the pressure sensor also deforms synchronously, so that a pressure signal is generated, and a pressure detection function is realized. The pressure touch module is high in sensitivity, simple in structure, convenient to assemble and easy to produce.

Description

TECHNICAL FIELD

[0001] The embodiment of the present disclosure belongs to the technical field of pressure sensing, and particularly relates to a pressure touch module and an electronic device. BACKGROUND

[0002] The pressure sensor is increasingly applied in pressure detection and pressure key products, and the pressure touch function and effect are better than the general mechanical key in terms of long service life, good anti-misoperation effect and expandable function. A conventional pressure touch scheme is that a sensor module is directly attached to the inside of a shell corresponding to a key position through double-sided adhesive. The sensor module direct attachment scheme is that a mounting groove is arranged in the inside of a key position support, and the sensor module is directly attached and fixed in the groove through double-sided adhesive. When the key is pressed, the panel deforms to make the sensor detect a pressure signal, so as to realize the pressure sensing key function.

[0003] However, the sensor module direct attachment scheme has the following problems: when the sensor detects the deformation of the panel, under the condition of high panel strength or thick panel structure limitation, the deformation amount of the panel is small, the sensitivity of the pressure touch is weak, and the light pressure detection function cannot be realized.

[0004] In view of the above problems, it is necessary to provide a pressure touch module and an electronic device which are reasonable in design and can effectively improve the above problems. INVENTION CONTENTS

[0005] The embodiment of the present disclosure aims to at least solve one of the technical problems in the prior art, and provides a pressure touch module and an electronic device.

[0006] The embodiment of the present disclosure provides a pressure touch module, comprising a key panel, an elastic sheet, a bearing circuit board and a pressure sensor.

[0007] The edge region of the elastic sheet is used for being fixed to the inside of the shell.

[0008] The key panel is arranged on the first surface of the elastic sheet.

[0009] The bearing circuit board is arranged on the second surface of the elastic sheet.

[0010] The pressure sensor is arranged on the side of the bearing circuit board away from the key panel and corresponds to the deformation region of the elastic sheet.

[0011] The bearing circuit board is used for being connected with a control circuit board to lead out the pressure signal detected by the pressure sensor to the control circuit board.

[0012] Optionally, the pressure sensor is arranged in the edge region of the bearing circuit board and corresponds to the edge region of the key panel.

[0013] Optionally, the elastic sheet is a metal sheet or a sheet of material with elastic properties.

[0014] Optionally, the elastic sheet is provided with a through hole at the edge region along the length direction of the elastic sheet, and the through hole is used for positioning and mounting the elastic sheet.

[0015] Optionally, the pressure sensor is welded to the bearing circuit board; or the pressure sensor is printed and integrated on the bearing circuit board.

[0016] Optionally, a mechanical switch is further included, and the mechanical switch is arranged at the central region of the side of the bearing circuit board away from the key panel.

[0017] Optionally, a vibration motor is further included, and the vibration motor is arranged at the central region of the side of the bearing circuit board away from the key panel.

[0018] Optionally, a capacitive sensing circuit board and a capacitive component are further included.

[0019] The capacitive sensing circuit board is arranged between the elastic sheet and the key panel.

[0020] The capacitive component is arranged at the side of the capacitive sensing circuit board facing the key panel.

[0021] The capacitive sensing circuit board is used to be electrically connected with the control circuit board, so as to lead the capacitive signal detected by the capacitive component to the control circuit board.

[0022] Optionally, the capacitive sensing circuit board is connected with the bearing circuit board.

[0023] Another aspect of the embodiments of the present disclosure provides an electronic device, which comprises a housing, a control circuit board arranged in the housing, and the pressure touch module as described above; wherein,

[0024] The housing is provided with an opening corresponding to the position of the key panel, and the key panel is exposed to the housing through the opening.

[0025] The edge region of the elastic sheet is fixed to the inside of the housing.

[0026] This disclosure discloses a pressure-sensitive touch module and electronic device. A button panel is mounted on the first surface of an elastic sheet, and a support circuit board is mounted on the second surface of the elastic sheet. A pressure sensor is mounted on the support circuit board. The edge region of the elastic sheet is used to fix the interior of the housing. When the button panel is pressed, the elastic sheet deforms under pressure, and the pressure sensor also deforms synchronously, thereby generating a pressure signal and realizing the pressure detection function. By transmitting pressure through the deformation of the elastic sheet, the problem of insufficient sensitivity in traditional solutions when the panel is thick or has high strength is solved. This pressure-sensitive touch module, by incorporating an elastic sheet, improves detection sensitivity, has a simple structure, is easy to assemble, and is easy to manufacture. Attached Figure Description

[0027] Figure 1 This is a front view of a pressure touch module according to one embodiment of the present disclosure;

[0028] Figure 2 for Figure 1 Side view of the medium pressure touch module;

[0029] Figure 3 This is a front view of a pressure touch module according to another embodiment of this disclosure;

[0030] Figure 4 for Figure 3 Side view of the medium pressure touch module;

[0031] Figure 5 An assembly diagram of a pressure touch module according to another embodiment of this disclosure;

[0032] Figure 6 An assembly diagram of a pressure touch module according to another embodiment of this disclosure;

[0033] Figure 7 An assembly side view of a pressure touch module according to another embodiment of this disclosure;

[0034] Figure 8 An assembly side view of a pressure touch module according to another embodiment of this disclosure. Detailed Implementation

[0035] To enable those skilled in the art to better understand the technical solutions of the embodiments of this disclosure, the embodiments of this disclosure will be further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0036] like Figures 1 to 4 As shown, one aspect of this disclosure provides a pressure touch module 100, characterized in that it includes a button panel 110, an elastic sheet 120, a carrier circuit board 130, and a pressure sensor 140.

[0037] The edge region of the elastic sheet 120 is used for fixing inside the shell.

[0038] The key panel 110 is arranged on the first surface of the elastic sheet 120. Specifically, as shown in Figures 5 to 8 The shell 210 is provided with an opening corresponding to the key panel 110, and the key panel 110 is used to pass through the opening and expose outside the shell 210.

[0039] The carrying circuit board 130 is arranged on the second surface of the elastic sheet 120.

[0040] The pressure sensor 140 is arranged on the side of the carrying circuit board 130 away from the key panel 110 and corresponds to the deformation region of the elastic sheet 120.

[0041] The carrying circuit board 130 is used to be connected with the control circuit board to lead the pressure signal detected by the pressure sensor 140 to the control circuit board.

[0042] Specifically, when the key panel 110 is pressed, the elastic sheet 120 is deformed under pressure, driving the pressure sensor 140 to produce deformation synchronously, thereby generating a pressure signal, and the carrying circuit board 130 transmits the pressure signal detected by the pressure sensor 140 to the control circuit board.

[0043] The pressure touch module of the embodiment of the present disclosure, the first surface of the elastic sheet is provided with the key panel, the second surface of the elastic sheet is provided with the carrying circuit board, the carrying circuit board is provided with the pressure sensor, the edge region of the elastic sheet is used for fixing inside the shell, when the key panel is pressed, the elastic sheet is deformed under pressure, the pressure sensor also produces deformation synchronously, thereby generating a pressure signal, realizing the pressure detection function, and the pressure is transmitted through the deformation of the elastic sheet, solving the problem of insufficient sensitivity in the traditional scheme when the panel is thicker or higher in strength. The pressure touch module sets the elastic sheet, improves the detection sensitivity, has a simple structure, is easy to assemble, and is easy to produce.

[0044] For example, as shown in Figure 1 and Figure 3 The pressure sensor 140 is arranged on the edge region of the carrying circuit board 130 and corresponds to the edge region of the key panel 110. In order to have higher sensitivity, the pressure sensor 140 needs to be arranged in the maximum deformation region of the elastic sheet 120. In the present embodiment, the maximum deformation region of the elastic sheet 120 is the edge region corresponding to the key panel 110. Therefore, the pressure sensor 140 is arranged on the edge region of the carrying circuit board 130 and corresponds to the edge region of the key panel 110.

[0045] It should be noted that in the present embodiment, the number of pressure sensors 140 is not specifically limited and can be selected according to actual needs.

[0046] Exemplarily, in the embodiment, the elastic sheet 120 is a metal sheet, for example, the elastic sheet 120 can be an elastic steel sheet. The elastic sheet 120 can also be a sheet body of a material with excellent elastic performance, for example, FR4, etc.

[0047] It should be noted that the embodiment does not specifically limit the material of the elastic sheet 120, which can be selected according to actual needs.

[0048] Exemplarily, as shown in Figure 1 and Figure 3 , the elastic sheet 120 is provided with a through hole 121 at the edge region along the length direction of the elastic sheet 120, and the through hole 121 is used for positioning and mounting the elastic sheet 120.

[0049] Specifically, in the embodiment, the through hole 121 can be a screw hole, and the elastic sheet 120 is positioned and mounted on the inner wall of the shell by connecting the screw and the screw hole.

[0050] In the embodiment, the edge region of the elastic sheet 120 along the length direction is fixed to the inner wall of the shell, and the central region of the elastic sheet 120 is suspended, that is, the central region of the elastic sheet 120 is not fixed to the shell 210, and only contacts the key panel 110, so that when the key panel 110 deforms, the elastic sheet 120 can better deform, and the sensitivity of pressure detection is increased.

[0051] Exemplarily, the pressure sensor 140 can be welded to the carrier circuit board 130; or the pressure sensor 140 can also be printed and integrated on the carrier circuit board 130. In the embodiment, the fixing method of the pressure sensor 140 is not specifically limited, which can be selected according to actual needs.

[0052] It should be noted that the carrier circuit board 130 can be a PCB or a FPC. Preferably, in the embodiment, the carrier circuit board 130 adopts a FPC. The carrier circuit board 130 has the functions of carrying the pressure sensor 140 and leading the pressure signal detected by the pressure sensor 140 to the control circuit board.

[0053] It should be further noted that the pressure sensor 140 can be a piezoresistive pressure sensor, a piezoelectric sensor or a strain gauge pressure sensor, etc. The piezoresistive pressure sensor can have a single bridge, a half bridge or a full bridge Wheatstone bridge structure. The specific type of the pressure sensor 140 is not limited, which can be selected according to actual needs.

[0054] Exemplarily, as shown in Figure 7As shown, in one embodiment, the pressure touch module 100 further includes a mechanical switch 150, which is disposed in the central area of ​​the supporting circuit board 130 on the side opposite to the button panel 110. That is, the mechanical switch 150 and the pressure sensor 140 are distributed on the same side. The supporting circuit board 130 can not only support the mechanical switch but also electrically connect the mechanical switch to the control circuit board.

[0055] In this embodiment, by setting a mechanical switch on the carrier circuit board, the pressure touch module can realize pressure detection while also providing feedback for the functions of ordinary buttons.

[0056] For example, such as Figure 8 As shown, in another embodiment, the pressure touch module 100 further includes a vibration motor 160, which is disposed in the central area of ​​the supporting circuit board 130 on the side opposite to the button panel 110. That is, the vibration motor 160 and the pressure sensor 140 are distributed on the same side. The supporting circuit board 130 can not only support the vibration motor, but also electrically connect the vibration motor to the control circuit board.

[0057] In this embodiment, by setting a vibration motor on the carrier circuit board, the pressure touch module can generate vibration feedback when triggered, so as to achieve the feedback effect of pressure touch.

[0058] For example, such as Figure 3 As shown, in another embodiment, the pressure touch module 100 also includes a capacitive sensing circuit board 170 and a capacitor assembly.

[0059] The capacitive sensing circuit board 170 is disposed between the elastic sheet 120 and the button panel 110.

[0060] The capacitor assembly is located on the side of the capacitive sensing circuit board 170 facing the keypad 110. The capacitor assembly is used to detect capacitance signals. The capacitor assembly can use capacitor pads and capacitor electrodes, or other electronic components capable of detecting capacitance. This embodiment does not impose any specific limitations.

[0061] The capacitive sensing circuit board 170 can serve as the capacitive sensing layer of the capacitor assembly. The capacitive sensing circuit board 170 is electrically connected to the control circuit board to transmit the capacitance signal detected by the capacitor assembly to the control circuit board. The capacitive sensing circuit board 170 can be a PCB or an FPC. Preferably, in this embodiment, the capacitive sensing circuit board 170 is an FPC.

[0062] In this embodiment, by setting a capacitive sensing circuit board and a capacitive assembly, the pressure touch module can perform both pressure detection and capacitance detection functions, which can meet more application function requirements of customers, such as capacitive sliding recognition, etc.

[0063] As shown in the embodiment, the capacitive sensing circuit board 170 is connected with the carrier circuit board 130. Figure 4

[0064] Specifically, since both the capacitive sensing circuit board 170 and the carrier circuit board 130 serve to carry electronic components and lead out signals of the electronic components, the capacitive sensing circuit board 170 and the carrier circuit board 130 can be two separate circuit boards, can be an integral circuit board, and can be selected according to actual needs.

[0065] In the pressure touch module of the disclosed embodiment, by arranging other functional devices such as capacitive touch sliders, touch switches, vibration motors, etc. on the side of the carrier circuit board away from the key panel, various functions can be expanded.

[0066] As shown in the embodiment, the capacitive sensing circuit board 170 and the capacitive components can be integrated in the carrier circuit board 130, and the carrier circuit board 130 can have both the ordinary key function feedback and the capacitive detection function. Figure 7

[0067] As shown in the embodiment, the capacitive sensing circuit board 170 and the capacitive components can be integrated in the carrier circuit board 130, and the carrier circuit board 130 can have both the ordinary key function feedback and the capacitive detection function. Figure 8 As shown in the embodiment, the capacitive sensing circuit board 170 and the capacitive components can be integrated in the carrier circuit board 130, and the carrier circuit board 130 can have both the ordinary key function feedback and the capacitive detection function.

[0068] Figures 5 to 8 As shown in the embodiment, another aspect of the disclosed embodiment provides an electronic device, which includes a housing 210, a control circuit board arranged in the housing 210, and the pressure touch module 100 described above; wherein the structural features of the pressure touch module 100 have been described in detail above, and will not be described again here.

[0069] The housing 210 is provided with an opening corresponding to the key panel 110, and the key panel 110 is exposed to the housing 210 through the opening.

[0070] The edge region of the elastic sheet 120 is fixed to the inside of the housing 210 by the fastener 220.

[0071] The electronic device can be a smart phone, a car control, a smart home device, or the like.

[0072] The electronic device of the disclosed embodiment adopts the pressure touch module described above, and has the advantages of simple structure, convenient assembly, high sensitivity, easy production, and the like, and can perform sensitive pressure detection under structural restrictions such as a thick panel.

[0073] ​​​It can be understood that the above implementation is only an exemplary implementation adopted for illustrating the principles of the embodiments of the present disclosure, however, the embodiments of the present disclosure are not limited thereto. Various modifications and improvements can be made by those of ordinary skill in the art without departing from the spirit and principle of the embodiments of the present disclosure, and these modifications and improvements are also considered to be within the scope of protection of the embodiments of the present disclosure.

Claims

1. A pressure touch module, characterized in that, The key panel, the elastic sheet, the bearing circuit board and the pressure sensor are included. The edge region of the elastic sheet is used for fixing inside the shell. The key panel is arranged on the first surface of the elastic sheet. The bearing circuit board is arranged on the second surface of the elastic sheet. The pressure sensor is arranged on the side of the bearing circuit board away from the key panel and corresponds to the deformation region of the elastic sheet. The bearing circuit board is used for connecting with the control circuit board to lead the pressure signal detected by the pressure sensor to the control circuit board. 2.The pressure touch module of claim 1, wherein, The pressure sensor is arranged on the edge region of the bearing circuit board and corresponds to the edge region of the key panel. 3.The pressure touch module of claim 1, wherein, The elastic sheet is a metal sheet or a sheet body of material with elastic performance. 4.The pressure touch module according to any one of claims 1 to 3, characterized in that, The edge region of the elastic sheet along the length direction is provided with a through hole used for positioning and mounting of the elastic sheet. 5.The pressure touch module according to any one of claims 1 to 3, wherein, The pressure sensor is welded on the bearing circuit board or is printed and integrated on the bearing circuit board. 6.The pressure touch module according to any one of claims 1 to 3, wherein, A mechanical switch is further included and is arranged on the central region of the side of the bearing circuit board away from the key panel. 7.The pressure touch module according to any one of claims 1 to 3, wherein, A vibration motor is further included and is arranged on the central region of the side of the bearing circuit board away from the key panel. 8.The pressure touch module according to any one of claims 1 to 3, wherein, A capacitive sensing circuit board and a capacitive component are further included. The capacitive sensing circuit board is arranged between the elastic sheet and the key panel. The capacitive component is arranged on the side of the capacitive sensing circuit board facing the key panel. The capacitive sensing circuit board is used for electrically connecting with the control circuit board to lead the capacitive signal detected by the capacitive component to the control circuit board. 9.The pressure touch module of claim 8, wherein, The capacitive sensing circuit board is connected with the bearing circuit board.

10. An electronic device, comprising: The shell, the control circuit board arranged in the shell and the pressure touch module of any one of claims 1 to 9 are included. The shell is provided with an opening corresponding to the key panel, and the key panel is exposed to the shell through the opening. The edge region of the elastic sheet is fixed inside the shell.

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