Touch input unit based on pressure-sensitive conversion

Abstract

The invention relates to a touch input unit based on pressure-sensitive conversion, an operator slides on a pressure-bearing structure, so that pressure applied to the pressure-bearing structure can be transmitted to an elastic pressure-sensitive layer through a support conversion column, and the elastic pressure-sensitive layer can elastically deform after being subjected to the pressure, so that the pressure-sensitive structure is protected; due to the fact that the supporting conversion column is arranged in the middle of the elastic pressure-sensitive layer, deformation of the elastic pressure-sensitive layer on the two sides of the supporting conversion column is different, and the deformation state of the elastic pressure-sensitive layer can also change along with change of the pressure applying position. And at the moment, the sliding direction of the operator can be judged according to the change of the deformation state of the elastic pressure-sensitive layer, so that the pressure-sensitive touch operation is realized. Compared with the prior art, the touch input unit based on pressure-sensitive conversion does not need to additionally arrange a touch module, and the purpose of simplifying the structure and wiring of a pressure touch design can be achieved.

Description

Technical Field

[0001] The present invention relates to the field of pressure-sensitive touch technology, and in particular to a touch input unit based on pressure-sensitive conversion. Background Art

[0002] With the popularization and development of electronic consumer products, pressure touch technology has also been widely used in electronic products. Its main function is to accurately identify the user's force and identify relevant information of the pressure, such as the size, direction, position, etc. of the force, and then match different control and response methods according to the information, so that electronic products can have a variety of service modes and functions.

[0003] Conventional pressure touch designs often include a touch module for identifying sliding tracks and a pressure sensing module for sensing pressure. The structure and wiring of the two are relatively complex when combined, and cannot meet the current requirements for lightweight and miniaturized consumer electronic products. Summary of the invention

[0004] In order to solve the defects of the pressure touch design in the prior art that the structure and wiring are relatively complicated, the present invention proposes a touch input unit based on pressure conversion.

[0005] The technical solution adopted by the present invention is a touch input unit based on pressure conversion, including a pressure-bearing structure, a support conversion column and an elastic pressure-sensitive layer arranged in sequence in the thickness direction, and the two ends of the support conversion column are respectively fixedly connected to the middle position of the pressure-bearing structure and the middle position of the elastic pressure-sensitive layer.

[0006] Preferably, the elastic pressure-sensitive layer is a strip-shaped structure or a cross-shaped structure.

[0007] Preferably, the supporting conversion column is a parallelepiped.

[0008] Preferably, the elastic pressure-sensitive layer comprises an elastic structure and a pressure-sensitive layer, and the pressure-sensitive layer is attached to a side of the elastic structure away from the supporting conversion column.

[0009] Preferably, both ends of the elastic pressure-sensitive layer extend outward to form a limiting portion, and a side of the limiting portion close to the pressure-bearing structure abuts against the external housing.

[0010] Preferably, the elastic pressure-sensitive layer includes two pairs of strain resistors, the two pairs of strain resistors form a Wheatstone bridge, and the angle between the strain direction of each pair of strain resistors and the length direction of the elastic pressure-sensitive layer is greater than or equal to 0° and less than 90°.

[0011] Preferably, a feedback structure is connected on a side of the elastic pressure-sensitive layer away from the supporting conversion column, or between the pressure-bearing structure and the elastic pressure-sensitive layer;

[0012] When the feedback structure is compressed to a threshold value, a structural mutation occurs, and a feedback signal is generated when the structural mutation occurs.

[0013] Preferably, a feedback structure is connected to a side of the elastic pressure-sensitive layer away from the support conversion column, and the feedback structure is a pot piece, and two pot pieces are respectively located on both sides of the support conversion column.

[0014] Preferably, the pot piece and the elastic pressure-sensitive layer are signal-connected.

[0015] Preferably, a recognition layer is connected to a side of the pressure-bearing structure away from the support conversion column, and the recognition layer and the elastic pressure-sensitive layer are connected via a flexible circuit, and the flexible circuit is arranged to fit the support conversion column.

[0016] In order to solve the defects of the prior art that the pressure touch design occupies a large space and cannot meet the requirements of lightweight and miniaturized consumer electronic products, the present invention proposes an electronic interactive device.

[0017] The present application also discloses an electronic interactive device, including the above-mentioned touch input unit based on pressure conversion.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] The present application discloses a touch input unit based on pressure conversion, wherein a pressure-bearing structure, a support conversion column and an elastic pressure-sensitive layer are sequentially arranged in the thickness direction, and are connected by a support conversion column at the middle position of the pressure-bearing structure and the elastic pressure-sensitive layer. The pressure-bearing structure is used as an input end of external pressure to receive pressure signals, and the elastic pressure-sensitive layer is used to identify pressure and has elastic deformation. The operator applies pressure at different positions on the pressure-bearing structure, and the pressure applied at different positions can be obtained by sliding, so that the pressure applied on the pressure-bearing structure can be transmitted to the elastic pressure-sensitive layer through the support conversion column, and the elastic pressure-sensitive layer itself can be elastically deformed after being subjected to pressure. Since the support conversion column is arranged in the middle position of the elastic pressure-sensitive layer, the deformation of the elastic pressure-sensitive layer on both sides of the support conversion column is not the same, and as the pressure application position changes, the deformation state of the elastic pressure-sensitive layer will also change. At this time, the position where the operator applies pressure can be judged according to the change in the deformation state of the elastic pressure-sensitive layer, thereby realizing the pressure-sensitive sliding touch operation. Compared with the prior art, the touch input unit based on pressure sensitivity conversion disclosed in the present application does not require an additional touch module, and can identify sliding signals and pressure signals through an extremely simple structure, thereby achieving the purpose of simplifying the structure and wiring of the pressure touch design.

[0020] The present application also discloses an electronic interactive device, which is equipped with a touch input unit based on pressure conversion, thereby reducing the space occupied by the original pressure touch design, and making the electronic interactive device lighter and smaller in size. Compared with the prior art, the electronic interactive device disclosed in the present application can achieve the purpose of lightweight and miniaturization of current consumer electronic products. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention is described in detail below with reference to the embodiments and accompanying drawings, wherein:

[0022] Figure 1 A schematic structural diagram of a touch input unit based on pressure conversion provided according to an embodiment of the present invention is shown;

[0023] Figure 2 A schematic diagram showing a partial structure of an electronic interactive device provided by an embodiment of the present invention is shown;

[0024] Figure 3 is a schematic diagram of the arrangement of strain resistors in the elastic pressure-sensitive layer in an embodiment;

[0025] Figure 4 yes Figure 3 Schematic diagram of a Wheatstone circuit formed by strain resistors of the elastic pressure-sensitive layer in the embodiment.

[0026] Description of labels:

[0027] 10. Pressure-bearing structure; 11. Button; 12. Structural parts;

[0028] 20. Support conversion column;

[0029] 30. elastic pressure-sensitive layer; 31. pressure-sensitive layer; 32. elastic structure; 33. limiting part; 34. flexible circuit;

[0030] 40. Feedback structure;

[0031] 50. Identification layer;

[0032] 60. External casing;

[0033] R1, a first resistor; R2, a second resistor; R3, a third resistor; R4, a fourth resistor. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical scheme and advantages of the present invention clearer, the embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings. Examples of embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar components or components with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be interpreted as limiting the present invention.

[0035] The present invention discloses a touch input unit based on pressure conversion, please refer to Figure 1 and Figure 2 , including a pressure-bearing structure 10, a support conversion column 20 and an elastic pressure-sensitive layer 30 arranged in sequence in the thickness direction, and the two ends of the support conversion column 20 are fixedly connected to the middle position of the pressure-bearing structure 10 and the middle position of the elastic pressure-sensitive layer 30 respectively.

[0036] The pressure-bearing structure 10, the support conversion column 20 and the elastic pressure-sensitive layer 30 are arranged in sequence in the thickness direction, and are connected by the support conversion column 20 at the middle position of the pressure-bearing structure 10 and the elastic pressure-sensitive layer 30. The pressure-bearing structure 10 is used to receive pressure signals as the input end of the external pressure, and the elastic pressure-sensitive layer 30 is used to identify the pressure and has elastic deformation. The operator slides on the pressure-bearing structure 10, so that the pressure applied to the pressure-bearing structure 10 can be transmitted to the elastic pressure-sensitive layer 30 through the support conversion column 20. After the elastic pressure-sensitive layer 30 is subjected to pressure, it can undergo elastic deformation. Since the support conversion column 20 is arranged in the middle position of the elastic pressure-sensitive layer 30, the deformation of the elastic pressure-sensitive layer 30 on both sides of the support conversion column 20 is not the same, and as the pressure application position changes, the deformation state of the elastic pressure-sensitive layer 30 will also change. At this time, the sliding direction of the operator can be judged according to the change in the deformation state of the elastic pressure-sensitive layer 30, thereby realizing the pressure-sensitive touch operation. Compared with the prior art, the touch input unit based on pressure sensitivity conversion disclosed in the present application does not require an additional touch module, and can identify sliding signals and pressure signals through an extremely simple structure, thereby achieving the purpose of simplifying the structure and wiring of the pressure touch design.

[0037] Among them, the operator applies different amounts of force on the pressure-bearing structure 10, so that the pressure applied to the pressure-bearing structure 10 can be transmitted to the elastic pressure-sensitive layer 30 through the support conversion column 20. After the elastic pressure-sensitive layer 30 is subjected to pressure, it can undergo elastic deformation itself. Different amounts of force can cause different degrees of deformation of the elastic pressure-sensitive layer 30, and the corresponding output signal amounts will also be different. That is, the amount of pressure applied by the operator can be judged, thereby realizing pressure-sensitive sliding touch operation.

[0038] Specifically, the touch input unit can be placed in a variety of ways according to its application scenario during actual use. The simplest way of placement is to directly place the touch input unit on a required placement plane, and at this time, it is not required to fix the elastic pressure-sensitive layer 30 to the placement plane. When the operator presses down at the position of the support conversion column 20 on the pressure-bearing structure 10, the elastic pressure-sensitive layer 30 will be deformed at the connection position with the support conversion column 20, and the two ends of the elastic pressure-sensitive layer 30 will bend upward. At this time, there are at least two positions where deformation occurs (when identifying one-dimensional touch); when the operator presses down at the position of the non-support conversion column 20 on the pressure-bearing structure 10, the elastic pressure-sensitive layer 30 will also be deformed at the connection position with the support conversion column 20, and the two ends of the elastic pressure-sensitive layer 30 will bend upward. One end of the elastic pressure-sensitive layer 30 at the pressed position will be pressed upward to deform, while the end away from the pressed position will bend upward due to the lifting of the support conversion column 20, and no deformation will occur at this time. Therefore, when the operator presses at different positions, the deformation state of the elastic pressure-sensitive layer 30 is different, so that the touch sliding direction of the operator can be determined.

[0039] It should be noted that the two ends of the support conversion column 20 are respectively fixedly connected to the middle position of the pressure-bearing structure 10 and the middle position of the elastic pressure-sensitive layer 30, which means that at least in a certain direction of the support conversion column 20, the length of the pressure-bearing structure 10 and the length of the elastic pressure-sensitive layer 30 are longer than the length of the support conversion column 20. In addition, the middle position refers to the position area between the two ends of the pressure-bearing structure 10 and the position area between the two ends of the elastic pressure-sensitive layer 30 in the above-mentioned certain direction, and does not only refer to the midpoint position area of ​​the line segment.

[0040] In some embodiments, the elastic pressure-sensitive layer 30 is a strip-shaped structure or a cross-shaped structure.

[0041] Specifically, since the touch recognition function of the touch input unit is realized by recognizing the deformation state of the elastic pressure-sensitive layer 30, the touch function realized by the elastic pressure-sensitive layer 30 varies with the shape of the elastic pressure-sensitive layer 30. Figure 1 and Figure 2 The touch input unit shown in the figure can be used to make a bar-shaped key. The bar-shaped structure is mainly conducive to realizing linear one-dimensional touch, and the sliding recognition direction of the touch is mainly concentrated in the arrangement direction of the bar structure. At this time, the shape of the pressure-bearing structure 10 is not limited. When the elastic pressure-sensitive layer 30 is a cross-shaped structure, it is mainly conducive to realizing planar two-dimensional touch, and the sliding recognition direction of the touch is mainly concentrated in the arrangement direction of the cross structure. If sliding recognition in other directions is required, it can be implemented with a specific algorithm.

[0042] It should be noted that, compared with directly using a whole flat plate as the elastic pressure-sensitive layer 30, the cross-shaped elastic pressure-sensitive layer 30 can reduce mutual interference in the two intersecting directions, and prevent the elastic pressure-sensitive layer 30 from deforming in one direction and causing the elastic pressure-sensitive layer 30 to deform in another direction, thereby achieving a better touch recognition effect in the pressure-sensitive conversion process, which can greatly improve the accuracy of touch recognition. Among them, the cross-shaped structure can be regarded as the result of the intersection of two strip structures, which is not limited to the two strip structures intersecting at 90 degrees. In other embodiments, more strip structures can also be intersected, for example, three strip structures can form a cross-shaped structure.

[0043] In some specific embodiments, the support conversion column 20 is a parallelepiped.

[0044] Specifically, the support conversion column 20 is a parallelepiped, and its top and bottom surfaces are arranged in parallel, so that the pressure-bearing structure 10 and the elastic pressure-sensitive layer 30, which are respectively fixedly connected, are also arranged in parallel, so that the operator can obtain a more stable posture when applying pressure. And when the elastic pressure-sensitive layer 30 is subjected to the pressure of the edges of the parallelepiped, its pressure deformation becomes more uniform, so that the parallelepiped can better cause pressure deformation in the strip structure or the cross structure to improve the accuracy of touch recognition.

[0045] The parallelepiped can be divided into a regular parallelepiped and an oblique parallelepiped. The oblique parallelepiped can change its deformation size on the elastic pressure-sensitive layer 30 while other conditions remain unchanged, so that it can be applied to some asymmetric structural designs to meet the usage requirements in different scenarios.

[0046] In some embodiments, the elastic pressure-sensitive layer 30 includes an elastic structure 32 and a pressure-sensitive layer 31 , and the pressure-sensitive layer 31 is attached to a side of the elastic structure 32 away from the supporting conversion column 20 .

[0047] It should be noted that the elastic pressure-sensitive layer 30 includes an elastic structure 32 and a pressure-sensitive layer 31, and the pressure-sensitive layer 31 is attached to the side of the elastic structure 32 away from the support conversion column 20. The elastic structure 32 is elastic and can be elastically deformed. The pressure-sensitive layer 31 is attached to the elastic structure 32 and can be deformed together with the elastic structure 32. The provision of the elastic structure 32 can prevent the support conversion column 20 from directly contacting the pressure-sensitive layer 31 that identifies the pressure, which is conducive to extending the service life of the pressure-sensitive layer 31.

[0048] In some specific embodiments, the support conversion column 20 and the elastic structure 32 are integrally formed.

[0049] Specifically, the elastic structure 32 will frequently deform during the use of the touch input unit, so it is very easy to be damaged and fail at the connection position between the support conversion column 20 and the elastic structure 32. Therefore, by integrally forming the support conversion column 20 and the elastic structure 32, the strength at the connection position can be improved, and fatigue is not likely to cause damage and failure. The support conversion column 20 and the elastic structure 32 can be made of the same material or different materials. When the same material is used, different thicknesses can be set to achieve a certain rigidity and required elasticity.

[0050] In some embodiments, both ends of the elastic pressure-sensitive layer 30 extend outward to form a limiting portion 33 , and a side of the limiting portion 33 close to the pressure-bearing structure 10 abuts against the external housing 60 .

[0051] Specifically, both ends of the elastic pressure-sensing layer 30 extend outward to form a limiting portion 33, that is, the elastic pressure-sensing layer 30 limits its own deformation state through the limiting portion 33, and the side of the limiting portion 33 close to the pressure-bearing structure 10 abuts against the external housing 60. The external housing 60 mentioned here refers to other external components, and is not limited to the housing.

[0052] Taking this embodiment as an example, when the operator presses down at the position of the supporting conversion column 20 on the pressure-bearing structure 10, the elastic pressure-sensitive layer 30 will be deformed at the connection position with the supporting conversion column 20. At the same time, due to the limitation of the external housing 60, the elastic pressure-sensitive layer 30 on both sides of the supporting conversion column 20 will be arched upward, and the entire elastic pressure-sensitive layer 30 will be deformed at this time; when the operator presses down at the position of the non-supporting conversion column 20 on the pressure-bearing structure 10, the elastic pressure-sensitive layer 30 has a tendency to bend upward when pressed on one side of the pressing position, but it will not bend upward due to the limitation of the external housing 60. The side away from the pressing position is limited by the external housing 60 and thus arches upward. Therefore, the deformation state of the elastic pressure-sensitive layer 30 is different when the operator presses at different positions, so that the touch sliding direction of the operator can be judged.

[0053] In some embodiments, please refer to Figure 3 and Figure 4 The elastic pressure-sensitive layer includes two pairs of strain resistors, the two pairs of strain resistors form a Wheatstone bridge, and the angle between the strain direction of each pair of strain resistors and the length direction of the elastic pressure-sensitive layer is greater than or equal to 0° and less than 90°.

[0054] Specifically, the elastic pressure-sensitive layer includes at least one pair of strain resistors, and the angle between the strain direction of each pair of strain resistors and the length direction of the elastic pressure-sensitive layer is greater than or equal to 0° and less than 90°. That is, the arrangement direction of the strain resistors may be consistent with the length direction of the elastic pressure-sensitive layer, or may be at an angle of 15°, 30°, 60°, etc. with the length direction of the elastic pressure-sensitive layer. In this case, when the elastic pressure-sensitive layer is deformed along the length direction, the deformation and the corresponding force magnitude may be obtained by existing calculation methods.

[0055] In this embodiment, if Figure 3-4 As shown, the elastic pressure-sensing layer includes two pairs of strain resistors, and the two pairs of strain resistors R1, R2, R3, and R4 are connected in sequence to form a Wheatstone bridge, which can improve the accuracy and stability of pressure sensing. When pressure is input on the keycap, the elastic pressure-sensing layer will be subjected to force and its two ends will bend downward. Since the strain direction of the two pairs of strain resistors is the same as the deformation direction or there is an angle, as the input pressure changes, the resistance values ​​of the two pairs of strain resistors will also change differently. According to the amount of change, the magnitude of the pressure can be calculated. Among them, the sum of the forces on a pair of strain resistors can be determined as the pressure value of the input pressure. Of course, using two pairs of strain resistors can further improve the accuracy of pressure sensing.

[0056] In some embodiments, please refer to Figure 1 and Figure 2 A feedback structure 40 is connected on a side of the elastic pressure-sensitive layer 30 away from the supporting conversion column 20 or between the pressure-bearing structure 10 and the elastic pressure-sensitive layer 30;

[0057] When the feedback structure 40 is compressed to a threshold value, a structural mutation occurs, and a feedback signal is generated when the structural mutation occurs.

[0058] It should be noted that the feedback structure 40 is used to provide feedback on pressure. After the operator applies a certain amount of pressure, the feedback structure 40 is pressurized to a threshold value, causing a sudden change in its structure. When the sudden change occurs, a feedback signal is generated, thereby enabling the operator to determine that the pressure has been pressed in place. When used in combination with touch sensing and pressure sensing, a more comprehensive human-computer interaction function can be achieved.

[0059] In addition, when a feedback structure 40 is connected between the pressure-bearing structure 10 and the elastic pressure-sensitive layer 30, on the one hand, the volume of the touch input unit can be further reduced, thereby facilitating integration into a more compact and compact device; on the other hand, the feedback structure 40 can prevent the pressure-bearing structure 10 from directly contacting the elastic pressure-sensitive layer 30 during the downward pressure process, thereby ensuring accurate detection of the pressure signal.

[0060] In some specific embodiments, a feedback structure 40 is connected to the side of the elastic pressure-sensitive layer 30 away from the support conversion column 20 and between the pressure-bearing structure 10 and the elastic pressure-sensitive layer 30. The threshold values ​​of the pressure reached by the feedback structures 40 at the two positions are different, so that as the pressure of the operator gradually increases, the feedback structures 40 at the two positions will feedback in sequence, thereby achieving the purpose of multi-level feedback and achieving a higher quality human-computer interaction function. Preferably, the threshold value of the feedback structure 40 connected between the pressure-bearing structure 10 and the elastic pressure-sensitive layer 30 is greater than the threshold value of the feedback structure 40 connected to the side of the elastic pressure-sensitive layer 30 away from the support conversion column 20, thereby preventing the pressure-bearing structure 10 from contacting the elastic pressure-sensitive layer 30 when the pressure continues to increase, thereby affecting the deformation of the elastic pressure-sensitive layer 30. The feedback signal of the feedback structure 40 connected between the pressure-bearing structure 10 and the elastic pressure-sensitive layer 30 can be used as a warning signal to prompt the operator not to continue pressing down.

[0061] In some specific embodiments, please refer to Figure 1 and Figure 2 A feedback structure 40 is connected to the side of the elastic pressure-sensitive layer 30 away from the support conversion column 20 . The feedback structure 40 is a pot piece. Two pot pieces are respectively located on both sides of the support conversion column 20 .

[0062] Specifically, the feedback structure 40 is a pot piece, and there are two pot pieces connected to the side of the elastic pressure-sensitive layer 30 away from the support conversion column 20. The two pot pieces are respectively located on both sides of the support conversion column 20. The pot piece has a simple structure, low cost, and convenient maintenance. When the pressure reaches the threshold, it will emit a sound signal and a vibration signal, which can perfectly meet the requirements of the feedback structure 40.

[0063] In addition to realizing the feedback function, the two pot pieces also have the function of optimizing the deformation of the elastic pressure-sensitive layer 30, so that the elastic pressure-sensitive layer 30 can produce a larger deformation amount, and the deformation amount of the elastic pressure-sensitive layer 30 is smoother, thereby improving the accuracy of touch judgment. When there are two pot pieces and a limiter 33, the embodiment at this time is used for explanation. When the operator presses down at the position of the support conversion column 20 on the pressure-bearing structure 10, the elastic pressure-sensitive layer 30 between the two pot pieces will arch downward under the pressure of the support conversion column 20; when the operator presses down at the position of the non-support conversion column 20 on the pressure-bearing structure 10, it will be abutted by the external housing 60, so the elastic pressure-sensitive layer 30 will arch downward on one side of the pressed position, and will arch upward on the side away from the pressed position, that is, when the cross section of the elastic pressure-sensitive layer 30 is observed, its deformation shape is roughly S-shaped. Since the directions of the arches are different, different deformation states can be obtained when pressing different positions, thereby determining the touch sliding direction of the operator.

[0064] In some more specific embodiments, the pot piece is connected to the elastic pressure-sensitive layer 30 by signal. Thus, the pot piece has a switch function in addition to feedback and support. When the operator causes the pot piece to change suddenly, the contact point of the pot piece can contact the connection point, thereby sending a switch signal. The developer can transmit the switch signal to other software and hardware devices to realize other functions.

[0065] In some particularly specific embodiments, the pot piece is connected to the pressure-sensitive layer 31 , which is more convenient to connect and can also make the size of the touch input unit smaller.

[0066] In other embodiments, the feedback structure 40 may also be other structures such as a piezoelectric igniter, and the piezoelectric igniter generates a photoelectric signal and a sound signal.

[0067] In some embodiments, a recognition layer 50 is connected to the side of the pressure-bearing structure 10 away from the support conversion column 20 . The recognition layer 50 and the elastic pressure-sensitive layer 30 are connected via a flexible circuit 34 . The flexible circuit 34 is arranged to fit the support conversion column 20 .

[0068] It should be noted that the recognition layer 50 can be a functional structure such as a fingerprint module, a capacitor layer, etc., wherein the recognition layer 50 and the elastic pressure-sensitive layer 30 are connected through a flexible circuit 34, and the flexible circuit 34 is arranged to fit the support conversion column 20, on the one hand to optimize the line direction, and on the other hand to avoid the need for the recognition layer 50 and the elastic pressure-sensitive layer 30 to be connected to the control unit separately.

[0069] In some specific embodiments, the pressure-bearing structure 10 includes a structural member 12 and a button 11 , wherein the identification layer 50 is disposed between the button 11 and the structural member 12 , thereby facilitating the protection of the identification layer 50 .

[0070] This application also discloses an electronic interactive device, please refer to Figure 1 and Figure 2 , including the above-mentioned touch input unit based on pressure conversion.

[0071] By installing a touch input unit based on pressure conversion, the space occupied by the original pressure touch design is reduced, and the electronic interactive device can be made lighter and smaller in size. Compared with the prior art, the electronic interactive device disclosed in this application can achieve the purpose of lightweight and miniaturization of current consumer electronic products.

[0072] In the description of this specification, if the terms "embodiment one", "this embodiment", "in an embodiment" and the like appear, it means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in the invention or at least one embodiment or example of the invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example; moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in an appropriate manner.

[0073] In the description of this specification, the terms "connect", "install", "fix", "set", "have", etc. are all understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0074] In the description of this specification, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "comprises", "comprising" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the statement "comprising a ..." does not exclude the presence of other identical elements in the process, method, article or device including the element.

[0075] The above description of the embodiments is to facilitate ordinary technicians in the technical field to understand and apply the technology of this case. People familiar with the technology in this field can obviously easily make various modifications to these examples and apply the general principles described here to other embodiments without creative work. Therefore, this case is not limited to the above embodiments. Modifications to the following situations should all be within the scope of protection of this case: ① A new technical solution implemented based on the technical solution of the present invention and combined with existing common knowledge, the technical effect produced by the new technical solution does not exceed the technical effect of the present invention; ② The equivalent replacement of some features of the technical solution of the present invention by using known technology, the technical effect produced is the same as the technical effect of the present invention; ③ The technical solution of the present invention can be expanded, and the substantive content of the expanded technical solution does not exceed the technical solution of the present invention; ④ The equivalent transformation made by using the contents of the description and drawings of the present invention is directly or indirectly applied to other related technical fields.

Claims

1. A touch input unit based on pressure conversion, characterized in that: It comprises a pressure-bearing structure, a support conversion column and an elastic pressure-sensitive layer which are arranged in sequence in the thickness direction, and two ends of the support conversion column are respectively fixedly connected to the middle position of the pressure-bearing structure and the middle position of the elastic pressure-sensitive layer.

2. A touch input unit based on pressure conversion according to claim 1, characterized in that: The elastic pressure-sensitive layer is a strip-shaped structure or a cross-shaped structure.

3. A touch input unit based on pressure conversion according to claim 2, characterized in that: The support conversion column is a parallelepiped.

4. The touch input unit based on pressure conversion according to claim 1, characterized in that: The elastic pressure-sensitive layer comprises an elastic structure and a pressure-sensitive layer, and the pressure-sensitive layer is attached to a side of the elastic structure away from the supporting conversion column.

5. The touch input unit based on pressure conversion according to claim 1, characterized in that: Both ends of the elastic pressure-sensitive layer extend outward to form a limiting portion, and a side of the limiting portion close to the pressure-bearing structure abuts against the external housing.

6. The touch input unit based on pressure conversion according to claim 1, characterized in that: The elastic pressure-sensitive layer includes two pairs of strain resistors, the two pairs of strain resistors form a Wheatstone bridge, and the angle between the strain direction of each pair of strain resistors and the length direction of the elastic pressure-sensitive layer is greater than or equal to 0° and less than 90°.

7. A touch input unit based on pressure conversion according to any one of claims 1 to 6, characterized in that: A feedback structure is connected on a side of the elastic pressure-sensitive layer away from the supporting conversion column, or between the pressure-bearing structure and the elastic pressure-sensitive layer; The feedback structure generates a structural mutation when the pressure reaches a threshold, and a feedback signal is generated when the structural mutation occurs.

8. The touch input unit based on pressure conversion according to claim 7, characterized in that: The feedback structure is connected to a side of the elastic pressure-sensitive layer away from the support conversion column. The feedback structure is a pot piece. Two pot pieces are respectively located on two sides of the support conversion column.

9. The touch input unit based on pressure conversion according to claim 8, characterized in that: The pot piece and the elastic pressure-sensitive layer are signal-connected.

10. A touch input unit based on pressure conversion according to any one of claims 1 to 6, characterized in that: The side of the pressure-bearing structure away from the support conversion column is connected with an identification layer, the identification layer is a fingerprint module or a capacitor layer, the identification layer and the elastic pressure-sensitive layer are connected through a flexible circuit, and the flexible circuit is arranged in contact with the support conversion column.

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