Pressure sensor device with body-sensing function, and body-sensing pressure switch

Abstract

A pressure sensor device with a body-sensing function, and a body-sensing pressure switch. The pressure sensor device with a body-sensing function comprises a first capacitive sensing disk (101), a second capacitive sensing disk (102), and a bottom-layer film (103), an intermediate-layer film (104) and a top-layer film (105) which are sequentially stacked on the first capacitive sensing disk (101). On the basis of the partitioning performed by the bottom-layer film (103), a metal dome (106) is deformed in two stages when pressed; an edge of the metal dome (106) is adhered to the bottom-layer film (103); and when the metal dome (106) is pressed to generate body-sensing feedback, the middle of the metal dome (106) and the second capacitive sensing disk (102) generate corresponding electrical signals by means of the deformation of the metal dome (106). By means of arranging a metal dome (106) on a bottom-layer film (103), body-sensing feedback is generated first when the metal dome (106) is pressed, and variable capacitance is formed between the metal dome (106) and a second capacitive sensing disk (102) only when the metal dome (106) is continuously pressed, such that different electrical signals are sent.

Description

A pressure sensor device with somatosensory function and a somatosensory pressure switch Technical Field

[0001] The present application relates to the technical field of input devices, and in particular to a somatosensory pressure sensor device and a somatosensory pressure switch. Background Art

[0002] Input devices are one of the primary means of exchanging information between users and computer systems. Examples include keyboards, mice, cameras, scanners, light pens, handwriting tablets, joysticks, and voice input devices. An input device is a device used by humans or external devices to interact with a computer, inputting raw data and the programs that process that data. Computers can receive a variety of data, both numerical and non-numerical, such as graphics, images, and sounds. These data can be input into the computer through various input devices for storage, processing, and output.

[0003] Currently, some pressure sensor input devices only transmit pressure. When touched, they start transmitting pressure data, which may cause some false touches and inaccurate signal input. Alternatively, the pressure sensing signal is set at a certain distance. However, with this design, the operator still cannot determine when the pressure sensing signal will be generated during operation.

[0004] Utility Model Content

[0005] In view of the above problems, the present application is proposed to provide a somatosensory pressure sensor device and a somatosensory pressure switch that overcome the above problems or at least partially solve the above problems.

[0006] The present invention discloses a somatosensory pressure sensor device and a somatosensory pressure switch, comprising:

[0007] A pressure sensor device with body sensing includes: a first capacitive sensing disc, a second capacitive sensing disc, and a bottom film, a middle film, and a top film stacked in sequence above the first capacitive sensing disc;

[0008] A hollow area is provided in the middle of the first capacitive sensing plate, and the second capacitive sensing plate is disposed in the hollow area and does not contact the first capacitive sensing plate;

[0009] The bottom film is provided with a first hole, and the middle film is provided with a second hole. The first hole corresponds to the hollow area, and the second hole is provided above the first hole and is larger than the first hole. A metal dome is provided in the second hole. The metal dome undergoes two stages of deformation when pressed due to the obstruction of the bottom film.

[0010] When the metal dome undergoes the first stage of deformation, the edge of the metal dome is in complete contact with the bottom film;

[0011] When the pot piece undergoes the second stage deformation, the edge of the pot piece is in full contact with the bottom film, and the middle of the pot piece and the second capacitive sensing plate generate corresponding electrical signals through the deformation amount of the pot piece.

[0012] Furthermore, a button is provided on the top of the top film, and the button corresponds to the position of the pot piece.

[0013] Furthermore, a PCB board is provided below the first capacitive sensing plate and the second capacitive sensing plate.

[0014] Furthermore, the PCB board is provided with a pressure detection processing unit, and the pressure detection processing unit is used to connect to a power supply and communicate with a pressure signal receiving device.

[0015] Furthermore, the pot is arranged at a height higher than the surface insulating layer of the second capacitive sensing plate.

[0016] Furthermore, an insulating material is provided between the first induction capacitor plate and the second induction capacitor plate.

[0017] Furthermore, an insulating layer is provided above the second capacitive sensing plate.

[0018] Furthermore, the bottom film is made of conductive material.

[0019] Furthermore, the bottom film is made of insulating material.

[0020] A somatosensory pressure switch comprises the somatosensory pressure sensor device described in any one of the above items.

[0021] This application has the following advantages:

[0022] In an embodiment of the present application, in response to the shortcomings of the pressure sensing device in the prior art that is easy to be triggered and prone to erroneous input instructions, the present application proposes a solution by setting a somatosensory switch to be triggered before triggering the variable capacitor, specifically: a first capacitance sensing disk, a second capacitance sensing disk, and a bottom film, an intermediate film, and a top film stacked in sequence above the first capacitance sensing disk; a hollow area is provided in the middle of the first capacitance sensing disk, and the second capacitance sensing disk is provided in the hollow area and does not contact the first capacitance sensing disk; the bottom film is provided with a first hole, and the intermediate film is provided with a second hole, the first hole corresponds to the hollow area, the second hole is provided above the first hole and the second hole is larger than the first hole, a pot piece is provided in the second hole, and the edge of the pot piece is adhered to the bottom film; when the pot piece is pressed to generate somatosensory feedback, the middle part of the pot piece and the second capacitance sensing disk generate a corresponding electrical signal through the deformation of the pot piece. By setting a pot piece on the middle layer of film, with a bottom layer of film spaced underneath, the pot piece will first generate physical feedback when it is pressed and deformed, and then you can continue to press. When you continue to press, a variable capacitor can be formed to form a pressure sensor, so that the pressure sensing device will not easily trigger the transmission of pressure signals. Before the pressure signal is transmitted, there will be a physical feedback reminder, achieving the technical effect of not inputting wrong signals when the sensor is accidentally touched during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solution of the present application, the following is a brief introduction to the drawings required for the description of the present application. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0024] FIG1 is a schematic structural diagram of a pressure sensor device with somatosensory sensing provided by one embodiment of the present application;

[0025] FIG2 is a schematic structural diagram of a bottom film layer, a middle film layer, and a top film layer of a pressure sensor device with somatosensory function provided by an embodiment of the present application.

[0026] In the accompanying drawings: 101, first capacitive sensing disk; 102, second capacitive sensing disk; 103, bottom film; 104, middle film; 105, top film; 106, pot; 107, equivalent capacitor; 108, variable capacitor; 109, button; 110, PCB board; 111, pressure detection processing unit; 112, first hole; 113, second hole. DETAILED DESCRIPTION

[0027] To make the objectives, features, and advantages of this application more readily apparent, the present application is further described below in detail with reference to the accompanying drawings and specific embodiments. It is apparent that the embodiments described are only a portion of the embodiments of this application, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments in this application without inventive effort are also within the scope of protection of this application.

[0028] The inventors have found through analysis of existing technologies that existing pressure detection devices all directly trigger variable capacitors, so that a sensing signal is also triggered when an accidental touch is made, resulting in frequent input of erroneous instructions, affecting operational control.

[0029] In an embodiment of the present application, in response to the shortcomings of the pressure sensing device in the prior art that is easy to be triggered and prone to erroneous input instructions, the present application proposes a solution by setting a somatosensory switch to be triggered before triggering the variable capacitor, specifically: a first capacitance sensing disk, a second capacitance sensing disk, and a bottom film, an intermediate film, and a top film stacked in sequence above the first capacitance sensing disk; a hollow area is provided in the middle of the first capacitance sensing disk, and the second capacitance sensing disk is provided in the hollow area and does not contact the first capacitance sensing disk; the bottom film is provided with a first hole, and the intermediate film is provided with a second hole, the first hole corresponds to the hollow area, the second hole is provided above the first hole and the second hole is larger than the first hole, a pot piece is provided in the second hole, and the edge of the pot piece is adhered to the bottom film; when the pot piece is pressed to generate somatosensory feedback, the middle part of the pot piece and the second capacitance sensing disk generate a corresponding electrical signal through the deformation of the pot piece. By setting a pot piece on the middle layer of film, with a bottom layer of film spaced underneath, the pot piece will first generate physical feedback when it is pressed and deformed, and then you can continue to press. When you continue to press, a variable capacitor can be formed to form a pressure sensor, so that the pressure sensing device will not easily trigger the transmission of pressure signals. Before the pressure signal is transmitted, there will be a physical feedback reminder, achieving the technical effect of not inputting wrong signals when the sensor is accidentally touched during operation.

[0030] 1-2 , a pressure sensor device with somatosensory sensing is shown, comprising: a first capacitive sensing disc 101, a second capacitive sensing disc 102, and a bottom film 103, an intermediate film 104, and a top film 105 stacked in sequence above the first capacitive sensing disc 101; a hollow area is provided in the middle of the first capacitive sensing disc 101, and the second capacitive sensing disc 102 is provided in the hollow area and does not contact the first capacitive sensing disc 101; the bottom film 103 is provided with a first hole 112, and the intermediate film 104 is provided with a first hole 112. 04 is provided with a second hole 113, the first hole 112 corresponds to the hollow area, the second hole 113 is provided above the first hole 112 and the second hole 113 is larger than the first hole 112, a pot piece 106 is provided in the second hole 113, the edge of the pot piece 106 is adhered to the bottom film 103; when the pot piece 106 is pressed to generate somatosensory feedback, the middle part of the pot piece 106 and the second capacitive sensing disk 102 generate a corresponding electrical signal through the deformation of the pot piece 106. By setting the pot piece 106 on the middle layer of film 104, with the bottom film 103 below, the pot piece 106 first generates somatosensory feedback when it is pressed and deformed, and then it can continue to be pressed. When it continues to be pressed, a variable capacitor can be formed to form a pressure sensor, so that the pressure sensing device will not easily trigger the pressure signal transmission. Before the pressure signal is transmitted, there will be a somatosensory feedback reminder, so that the technical effect of not inputting an erroneous signal when the sensor is accidentally touched during operation is achieved.

[0031] It should be noted that the edge of the pot piece 106 forms an equivalent capacitor 108 with the first capacitive sensing disk 101 through the gap of the underlying film 103. When the pot piece 109 is pressed to generate somatosensory feedback and then the pot piece 106 is continued to be pressed, the operator can clearly continue pressing at this time to trigger the pressure sensing instruction. The middle part of the pot piece 106 will form a variable capacitor 107 with the second capacitive sensing disk, and the capacitance value changes with the deformation of the pot piece 106.

[0032] The bottom film 103, the middle film 104 or the top film 105 is provided with ventilation holes, so that the first hole 113 and the second hole 112 are connected to the outside world, so as to prevent the metal dome 106 in the second hole 113 from being blocked by air pressure and difficult to press.

[0033] Next, a somatosensory pressure sensor device and a somatosensory pressure switch in this exemplary embodiment will be further described.

[0034] In one embodiment of the present application, a button 109 is provided on the top of the top film 105 , and the button 109 corresponds to the position of the pot piece 106 .

[0035] It should be noted that, referring to Figure 2, the top film 105 can close the space created by the first hole 112 and the second hole 113. A button 109 is set on the top of the top film 105, which can further enhance the feel of pressing the pot piece 106, facilitate the positioning of the operation point, and facilitate operation.

[0036] In one embodiment of the present application, a PCB board 110 is further disposed below the first capacitive sensing plate 101 and the second capacitive sensing plate 102 .

[0037] It should be noted that the PCB board 110 is used to control the instructions output by the pressure sensor device.

[0038] In one embodiment of the present application, the PCB board 110 is provided with a pressure detection processing unit 111 , and the pressure detection processing unit 111 is used to connect to a power source and communicate with a pressure signal receiving device.

[0039] It should be noted that the pressure detection processing unit 111 receives the change in capacitance value to generate a corresponding pressure instruction and provides circuit connection for the device.

[0040] In one embodiment of the present application, the metal dome 106 is disposed at a height higher than the surface insulating layer of the second capacitive sensing plate 102 ;

[0041] When the pot piece 106 is pressed to form an equivalent capacitor between the edge of the pot piece 106 and the first capacitive sensing plate 101 , the space between the bottom of the pot piece 106 and the surface insulating layer of the second capacitive sensing plate 102 is not less than 0.1 mm.

[0042] It should be noted that the pot piece 106 is set at a height higher than the surface insulating layer of the second capacitive sensing plate 102 to prevent the pot piece 106 from generating capacitance with the second capacitive sensing plate 102 during the first force-applying stage, thereby preventing the issuance of an erroneous instruction. To ensure the correct instruction, the pot piece 106 should also be at a certain distance from the surface insulating layer of the second capacitive sensing plate 102 at the end of the first force-applying stage to prevent capacitance from being generated at this time.

[0043] In one embodiment of the present application, an insulating material is disposed between the first sensing capacitor plate 101 and the second sensing capacitor plate 102 .

[0044] It should be noted that the first sensing capacitor plate 101 and the second sensing capacitor plate 102 need not be in contact at all, and the first sensing capacitor plate 101 and the second sensing capacitor plate 102 are provided with an insulating material so as to come into contact with each other when the first sensing capacitor plate 101 and the second sensing capacitor plate 102 shake during use.

[0045] In one embodiment of the present application, the diameter of the first hole 112 is smaller than the diameter 106 of the pot piece;

[0046] Referring to Figure 2, the pot piece 106 needs to be placed on top of the bottom film, so the diameter of the first hole 112 needs to be smaller than the diameter of the pot piece 106. At the same time, the pot piece 106 is set inside the second hole 113, so the diameter of the second hole 113 needs to be larger than the diameter of the pot piece 106.

[0047] In one embodiment of the present application, an insulating layer is disposed above the second capacitive sensing plate 102 .

[0048] It should be noted that an insulating material barrier is provided between the second capacitive sensing plate 102 and the pot piece 106 to prevent the two from contacting and connecting, which may cause device failure. The insulating layer can be provided above the second capacitive sensing plate 102 or below the pot piece 106.

[0049] In one embodiment of the present application, the bottom film 103 is made of a conductive material.

[0050] In one embodiment of the present application, the bottom film 103 is made of insulating material.

[0051] It should be noted that the bottom film 103 can be made of either a conductive material or an insulating material, and different materials of the bottom film 103 are used for devices with different capacitance requirements.

[0052] In one embodiment of the present application, a somatosensory pressure switch is further provided, wherein the pressure switch includes the somatosensory pressure sensor device described in any embodiment of the present application.

[0053] It should be noted that the somatosensory pressure switch can be set on the PCB board of the electronic product, or it can be packaged separately as an independent pressure switch.

[0054] Although preferred embodiments of the present invention have been described, those skilled in the art may make additional changes and modifications to these embodiments once they become aware of the basic inventive concepts. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the embodiments of the present invention.

[0055] Finally, it should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or terminal device that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or terminal device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article, or terminal device that includes the element.

[0056] The above is a detailed introduction to a somatosensory pressure sensor device and a somatosensory pressure switch provided by the present application. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea; at the same time, for general technical personnel in this field, based on the ideas of the present application, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A pressure sensor device with body sensing, characterized in that: include: A first capacitive sensing plate, a second capacitive sensing plate, and a bottom film, a middle film, and a top film stacked in sequence on the first capacitive sensing plate; A hollow area is provided in the middle of the first capacitive induction plate, and the second capacitive induction plate is arranged in the hollow area and does not contact the first capacitive induction plate; The bottom film is provided with a first hole, the middle film is provided with a second hole, the first hole corresponds to the hollow area, the second hole is arranged above the first hole and is larger than the first hole, a pot piece is arranged in the second hole, and the edge of the pot piece is adhered to the bottom film; When the pot piece is pressed to generate somatosensory feedback, the middle portion of the pot piece and the second capacitive sensing plate generate a corresponding electrical signal through the deformation amount of the pot piece.

2. The pressure sensor device with body sensing according to claim 1, characterized in that: A button is provided on the top of the top film, and the button corresponds to the position of the pot piece.

3. The pressure sensor device with body sensing according to claim 1, characterized in that: A PCB board is further disposed below the first capacitive sensing plate and the second capacitive sensing plate.

4. The pressure sensor device with body sensing according to claim 3, characterized in that: The PCB board is provided with a pressure detection processing unit, and the pressure detection processing unit is used to connect to a power source and communicate with a pressure signal receiving device.

5. The pressure sensor device with body sensing according to claim 1, characterized in that: The pot piece is arranged at a height higher than the surface insulating layer of the second capacitive sensing plate.

6. The pressure sensor device with body sensing according to claim 1, characterized in that: An insulating material is disposed between the first induction capacitor plate and the second induction capacitor plate.

7. The pressure sensor device with body sensing according to claim 1, characterized in that: An insulating layer is disposed above the second capacitive sensing plate.

8. The pressure sensor device with body sensing according to claim 1, characterized in that: The bottom film is made of conductive material.

9. The pressure sensor device with body sensing according to claim 1, characterized in that: The bottom film is made of insulating material.

10. A somatosensory pressure switch, characterized in that: The pressure switch comprises a pressure sensor device with somatosensory according to any one of claims 1 to 9.

Images