Input device

Abstract

The invention discloses an input device. The input device comprises a bearing module which is provided with a mounting surface; the piezoelectric component comprises a piezoelectric plate arranged on the mounting surface; the pressing plate is mounted on the bearing module; the pressing plate is provided with a pressure conduction part corresponding to the piezoelectric plate and a touch control part spaced from the pressure conduction part; the pressure conduction part pre-presses the piezoelectric plate in the first direction pointing to the mounting face from the pressing plate, and the touch control part is spaced from the mounting face in the first direction. The piezoelectric plate is suitable for being pressed by the pressure conduction part when the touch part is subjected to touch operation, so that the piezoelectric assembly is triggered in response to the touch operation, or the piezoelectric plate is suitable for being excited and driving the panel to vibrate after the piezoelectric assembly is triggered, so as to provide vibration feedback at the touch part. Therefore, the input device does not need to be additionally provided with an oscillator, the number of parts needed by the input device is reduced, and the structure of the input device is simplified.

Description

Technical Field

[0001] The present application relates to the field of control devices, and in particular to an input device. Background Art

[0002] Vehicles are usually equipped with input devices to facilitate users to operate onboard electronic devices. In some vehicles, the input devices are touch-sensitive to replace physical buttons, thereby enhancing the technological sense of the car cabin.

[0003] The input device includes a touch recognition device for recognizing the user's input operation (e.g., touch operation). In some input devices, a vibrator is also provided for providing the user with vibration feedback of the input operation. Usually, the touch recognition device and the vibrator are two independent components, which results in a large number of parts of the input device, a large volume, and a more complex structure. Summary of the invention

[0004] In view of the above technical problems, the present application proposes an input device. The input device includes a carrier module having a mounting surface; a piezoelectric component including a piezoelectric sheet arranged on the mounting surface; and a pressing plate mounted on the carrier module; the pressing plate has a pressure transmission part corresponding to the piezoelectric sheet and a touch control part separated from the pressure transmission part; the pressure transmission part pre-presses the piezoelectric sheet along a first direction from the pressing plate to the mounting surface, and the touch control part is separated from the mounting surface along the first direction; wherein the piezoelectric sheet is suitable for being pressed by the pressure transmission part when a touch operation is applied to the touch control part, so that the piezoelectric component is triggered in response to the touch operation, or the piezoelectric sheet is suitable for being excited and driving the panel to vibrate after the piezoelectric component is triggered, so as to provide vibration feedback at the touch control part.

[0005] In one embodiment, the pressing plate also has a first mounting portion fixedly connected to the carrying module; and a second mounting portion spaced apart from the first mounting portion; the second mounting portion is constrained by the carrying module so that the second mounting portion is suitable for reciprocating movement along the first direction within a preset distance range.

[0006] In one embodiment, the pressure transmission part and the touch part are arranged on a side of the first mounting part facing the second mounting part and are spaced apart along a second direction from the first mounting part to the second mounting part; the distance from the pressure transmission part to the first mounting part is smaller than the distance from the touch part to the first mounting part.

[0007] In one embodiment, the pressure transmitting portion is between the first mounting portion and the second mounting portion.

[0008] In one embodiment, the pressing plate includes an elastic cantilever extending from a first mounting portion and a main body plate extending from the cantilever; the cantilever is spaced apart from the carrier module, and the second mounting portion is connected to the main body plate; the pressure transmission portion and the touch portion are located on the main body plate.

[0009] In one embodiment, the first mounting portion is plate-shaped; the cantilever is arranged at an angle to the first mounting portion, and / or the cantilever is arranged at an angle to the main plate, so that the first mounting portion and the main plate are in different planes.

[0010] In one embodiment, an adjustment mechanism is provided between the second mounting portion and the carrier module; the adjustment mechanism is suitable for adjusting the bending degree of the pressing plate toward the carrier module along the first direction to adjust the pre-pressure degree of the piezoelectric sheet by the pressure transmission portion.

[0011] In one embodiment, a through hole extending along a first direction is provided on the carrier module; the adjustment mechanism includes an adjustment pin; the adjustment pin is adapted to be arranged in the through hole, and the second mounting portion is adapted to be pressed by the adjustment pin toward the carrier module along the first direction.

[0012] In one embodiment, the through hole is a bolt hole, and the adjusting pin is an adjusting bolt matched with the bolt hole.

[0013] In one embodiment, the pressing plate is configured with contacts protruding from the pressure transmitting portion toward the piezoelectric sheet.

[0014] In one embodiment, a spacer is provided between the pressing plate and the mounting surface of the carrier module, and the spacer is located on the side of the pressure transmitting part away from the first mounting part; the spacer is used to limit the degree of pressing of the piezoelectric sheet by the pressure transmitting part within a preset range.

[0015] In one embodiment, the input device further includes a touch control component, and the touch control component includes a touch control film; the touch control film is arranged on the pressing plate and corresponds to the touch control part.

[0016] In one embodiment, a plurality of touch control parts are arranged on the pressing plate; and the touch control film corresponds to the plurality of touch control parts.

[0017] In one embodiment, a mark is disposed on the touch portion.

[0018] In one embodiment, the logo is a light-transmitting structure; a backlight module is provided on the carrier module, and the backlight module corresponds to the logo to light up the logo.

[0019] In one embodiment, a display component is disposed on the pressing plate and / or the carrying module.

[0020] The beneficial effects of the present application are as follows: According to the input device of the present application, when a touch operation is applied to the touch portion, the piezoelectric sheet is pressed by the pressure transmission portion, and the piezoelectric component is triggered in response to the touch operation. After the piezoelectric component is triggered, the piezoelectric sheet is excited and drives the pressing plate to vibrate to provide vibration feedback to the user. In other words, the piezoelectric component is not only used to realize the touch function, but also to provide vibration feedback. In this way, the input device of the present application does not need to be additionally provided with a vibrator, which reduces the number of components required for the input device, reduces the volume and simplifies the structure of the input device.

[0021] According to the input device of the present application, the touch part is spaced apart from the pressure transmission part (i.e., the touch part is not directly opposite to the piezoelectric sheet). In this way, the touch part and the pressure transmission part (and the piezoelectric sheet corresponding to the pressure transmission part) can be arranged at any appropriate position on the input device (i.e., the pressing plate and the piezoelectric sheet do not need to be directly opposite to each other), as long as the piezoelectric sheet can be smoothly pressed to trigger the piezoelectric component when the touch part is touched. This further facilitates the design and manufacture of the input device.

[0022] According to the input device of the present application, after the touch portion and the pressure transmission portion are separated, when the pressing plate generates the vibration feedback described above, the vibration felt by the user at the touch portion decays rapidly, allowing the user to obtain a crisp feedback vibration feel.

[0023] According to the input device of the present application, the pressing plate forms a lever structure with the first mounting portion as a fulcrum, the pressure transmission portion as a first force application point, and the touch portion as a second force application point. The distance from the pressure transmission portion to the first mounting portion is smaller than the distance from the touch portion to the first mounting portion. In this way, when the piezoelectric sheet provides vibration feedback, the amplitude at the touch portion is also greater than the amplitude at the pressure transmission portion. Therefore, the vibration feedback felt by the user at the touch portion is relatively strong, thereby further improving the user's experience.

[0024] Also according to the input device of the present application, an adjustment mechanism is provided between the second mounting portion of the pressing plate and the carrier module. The degree of bending of the pressing plate toward the carrier module can be adjusted by the adjustment mechanism to adjust the degree of pre-compression of the piezoelectric sheet by the pressure transmission portion. When adjusting the degree of pre-compression of the piezoelectric sheet by the pressure transmission portion, the pressing plate forms a lever structure with the first mounting portion as a fulcrum, the pressure transmission portion as a first force application point, and the second mounting portion as a third force application point. The distance from the pressure transmission portion to the first mounting portion is less than the distance from the second mounting portion to the first mounting portion. According to the lever action, when the degree of bending of the pressing plate toward the carrier module changes greatly along the adjustment mechanism, the degree of pre-compression of the piezoelectric sheet by the pressure transmission portion will change slightly. Thus, the degree of pre-compression of the piezoelectric sheet by the pressure transmission portion can be accurately controlled by the adjustment mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The present application will be further described in the following detailed description by means of non-limiting examples of typical embodiments of the present application based on a number of drawings, which are not drawn to scale.

[0026] Figure 1 A vehicle according to one embodiment of the present application is schematically shown.

[0027] Figure 2 A first embodiment of an input device according to the present application is schematically shown.

[0028] Figure 3 Schematically shows Figure 2 Exploded view of the input device shown.

[0029] Figure 4 Schematically shows Figure 2 A cross-sectional view of the input device is shown.

[0030] Figure 5 The first, second and third lever arms are schematically shown.

[0031] Figure 6 The piezoelectric assembly is shown schematically.

[0032] Figure 7 One embodiment of a cantilever is schematically shown.

[0033] Figure 8 An embodiment of the restraint form of the second mounting portion is schematically shown.

[0034] Fig. 9 Another embodiment of the restraining form of the second mounting portion is schematically shown.

[0035] Fig.10 A second embodiment of the input device according to the present application is schematically shown.

[0036] Fig.11 A third embodiment of the input device according to the present application is schematically shown.

[0037] Reference numerals list 1 Vehicle 11 Steering wheel 12 Main instrument panel 13 instrument panels 2 Input Devices 201 circuit board 202 adjustment mechanism 21 load-carrying modules 211 mounting surface 212 bearing surface 213 receiving groove 214a upper wall 214b lower wall 215 through hole 216 spacer 217 light emitting device 218 Display Components 22 Piezoelectric components 221 piezoelectric sheet 222 first wiring harness 23 Press plate 231 first mounting portion 232 second mounting portion 233 pressure transmission part 233a contact 234 touch control unit 236 main body plate 235 cantilever 238 opening 24 touch components 241 touch film 242 second wiring harness A1 first direction A2 second direction L1 first lever L2 second lever L3 third lever DETAILED DESCRIPTION

[0038] In order to make the purpose, technical solutions and advantages of the present application clearer, the technical solutions of the present application will be clearly and completely described below in conjunction with the specific embodiments of the present application and the corresponding drawings. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present application.

[0039] Figure 1 A vehicle 1 according to an embodiment of the present application is schematically shown. An on-board electronic device (not shown in the figure) and an input device 2 for controlling the on-board electronic device are provided in the vehicle 1. For example, the input device 2 can be provided on a steering wheel 11, a main instrument panel 12, a sub-instrument panel 13 at an armrest box, etc. In some other embodiments, the input device can also be used in transportation vehicles such as ships, airplanes, trains, or other large equipment. For simplicity, the following describes the technical solution of the present application by taking the application of the input device in a vehicle as an example.

[0040] A first embodiment of the input device is described below.

[0041] Reference Figure 2 , Figure 3 and Figure 4 The input device 2 includes a carrying module 21 , a piezoelectric component 22 and a pressing plate 23 .

[0042] The supporting module 21 is, for example, a substantially rectangular parallelepiped base, and has a substantially rectangular mounting surface 211 and a supporting surface 212 opposite to the mounting surface 211. Figure 3 and Figure 4As shown, the input device 2 may also include a circuit board 201, and the circuit board 201 is arranged on the bearing surface 212. The circuit board 201 is used to electrically connect the piezoelectric component 22 and the touch component 24 described below. In addition, it should be noted that it is easy for a person skilled in the art to know that the shape of the bearing module can be adaptively adjusted according to the different size requirements and shape requirements of the assembly. For example, the bearing module can be adjusted so that the mounting surface and / or the bearing surface is a triangular shape, a circular shape, a trapezoidal shape, a step surface shape, and a combination of these shapes. It should also be understood that in some cases, the bearing module can be part of the body of the vehicle, and can also be part of certain modules of the vehicle. In other words, the input device is integrated into the body or certain modules of the vehicle, such as door panels, armrests, center consoles, instrument panels, top consoles, tailgate switches, and the surrounding area of ​​the charging port cover of new energy vehicles or the fuel tank cover or cover of fuel vehicles.

[0043] Reference Figure 4 and Figure 6 , the piezoelectric assembly 22 includes a piezoelectric sheet 221 and a first wiring harness 222 electrically connected to the piezoelectric sheet 221. The piezoelectric sheet 221 is mounted on the mounting surface 211 of the carrier module 21, so that the piezoelectric assembly 22 is mounted on the carrier module 21. The first wiring harness 222 is also electrically connected to the circuit board 201 so that the piezoelectric sheet 221 and the circuit board 201 can communicate. In one embodiment, the piezoelectric sheet is made of piezoelectric ceramics. Piezoelectric ceramics are well known to those skilled in the art and will not be described in detail here. Of course, according to actual conditions, the piezoelectric sheet can also be made of other appropriate materials, which are not limited here.

[0044] The pressing plate 23 is mounted on the carrier module 21 and covers at least a portion of the mounting surface 211. The pressing plate 23 has a pressure transmission portion 233 corresponding to the piezoelectric sheet 221 and a touch portion 234 spaced apart from the pressure transmission portion 233. Figure 4 As shown, the pressing plate 23 is configured such that the pressure transmission part 233 pre-compresses the piezoelectric sheet 221 along a first direction A1 pointing from the pressing plate 23 to the mounting surface 211 (i.e., the piezoelectric sheet 221 is in contact with the pressure transmission part 233 or the piezoelectric sheet 221 is slightly pressed by the pressure transmission part 233, but the piezoelectric component 22 is not triggered), and the touch part 234 is spaced apart from the mounting surface 221 along the first direction A1.

[0045] According to the input device 2 of the present application, when no pressure is applied to the touch portion 234 (for example, no touch operation is applied), the pressure transmission portion 233 keeps pre-compressing the piezoelectric sheet 221. When a touch operation is applied to the touch portion 234 (i.e., the touch portion is pressed), the pressing plate 23 drives the pressure transmission portion 233 to further press the piezoelectric sheet 221, and the piezoelectric sheet 221 is pressed immediately, so that the piezoelectric component 22 is triggered in response to the touch operation (i.e., the piezoelectric component generates a control signal). In this way, when the user applies a touch operation to the touch portion 234, the pressure transmission portion 233 has no idle travel, which is caused by the piezoelectric sheet 221 not being pressed immediately, and the user will not have the unpleasant feeling that the input device 2 is insensitive to touch.

[0046] After the piezoelectric assembly 22 is triggered, the piezoelectric sheet 221 can be stimulated (for example, a proper voltage is applied to the piezoelectric sheet 221) to change the size of the piezoelectric sheet 211. Since the piezoelectric sheet 221 and the pressure transmission part 233 (or the pressing plate 23) are always in contact, the piezoelectric sheet 221 will drive the pressing plate 23 to vibrate, and the user will feel the vibration feedback of the touch operation at the touch part 234.

[0047] It can be seen that in the input device 2 of the present application, the piezoelectric component 22 is not only used to realize the touch function, but also used to provide vibration feedback for the touch operation. In this way, the input device 2 does not need to be additionally provided with a vibrator as in the prior art, which reduces the number of parts required for the input device 2, reduces the cost of the input device 2, and simplifies the structure of the input device 2.

[0048] In some existing input devices, the touch recognition device and the vibrator are usually combined together to form a trigger component with a larger volume, and the touch area of ​​the input device should be roughly opposite to the touch recognition device. This results in greater restrictions on the layout position and layout method of the touch area and / or the trigger component in the input device, especially when the size of the input device is small. Compared with this prior art, in the present application, the thickness of the piezoelectric sheet is smaller, for example, the thickness is usually between 1mm and 3mm. In this way, the input device can be manufactured to have a smaller thickness for use in a small space. In addition, the touch portion is spaced apart from the pressure transmission portion (that is, the touch portion is not opposite to the piezoelectric sheet). In this way, as needed, the touch portion and the pressure transmission portion (and the piezoelectric sheet corresponding to the pressure transmission portion) can be set at any appropriate position on the input device (that is, the pressing plate and the piezoelectric sheet do not need to be opposite), as long as the piezoelectric sheet can be pressed smoothly when the touch portion is touched. This further facilitates the design and manufacture of the input device.

[0049] In some input devices of the prior art, in order to obtain such a crisp feedback vibration feel, an appropriate reverse vibration is usually applied to the vibrator providing the feedback vibration to make the vibration of the vibrator decay quickly. However, this method places high demands on the drive device of the input device. In the input device of the present application, after the touch portion and the pressure transmission portion are separated, it is found that when the pressing plate generates the vibration feedback described above, even if the reverse vibration as in the prior art is not applied to the piezoelectric sheet, the vibration felt by the user at the touch portion decays quickly, so that the user obtains a crisp feedback vibration feel.

[0050] like Figure 4 As shown, the pressing plate 23 is configured with a contact 233a protruding from the pressure transmission part 233 toward the piezoelectric sheet 221, which helps to effectively realize the pre-compression of the piezoelectric sheet 21 by the pressure transmission part 233. In addition, compared with the touch part 234, the contact 233a protrudes further from the pressing plate 23 toward the piezoelectric sheet 221. For example, the protrusion size of the contact 233a toward the piezoelectric sheet 221 is between 1mm and 1.5mm, and the touch part 234 does not protrude toward the piezoelectric sheet 221. Therefore, when the contact 233a pre-compresses the piezoelectric sheet 221, the touch part 234 is spaced apart from the mounting surface 211 of the carrier module 21.

[0051] Also like Figure 4 As shown, the pressing plate 23 also includes a first mounting portion 231, an elastic cantilever 235, a main body plate 236 and a second mounting portion 232. The first mounting portion 231 is generally plate-shaped and connected to the carrier module 21. For example, the first mounting portion 231 is fixedly connected to the carrier module 21 by screws. In other embodiments, the first mounting portion can also be connected to the carrier module by rubber nails. The cantilever 235 extends from the first mounting portion 231 and is spaced apart from the carrier module 21.

[0052] The main plate 236 extends from the free end of the cantilever 235 away from the first mounting portion 231. The second mounting portion 232 is connected to the main plate 236, for example, the second mounting portion 232 is arranged at one end of the main plate 236 away from the first mounting portion 231. The pressure transmission portion 233 and the touch portion 234 are both located on the main plate 236, for example, between the first mounting portion 231 and the second mounting portion 232. The pressure transmission portion 233 and the touch portion 234 are also spaced apart along the second direction A2 pointing from the first mounting portion 231 to the second mounting portion 232, and the touch portion 234 is between the pressure transmission portion 233 and the second mounting portion 232 along the second direction A2. In one embodiment, the main plate 236 is substantially rectangular. The first mounting portion 231 and the second mounting portion 232 are substantially opposite to each other along the length direction of the rectangle, and the pressure transmission portion 233 and the touch portion 234 are substantially spaced apart from each other along the length direction of the rectangle.

[0053] The second mounting portion 232 is constrained by the carrier module 21 along the first direction A1, and is suitable for reciprocating up and down in the first direction A1 relative to the carrier module 21 within a preset distance range. In this way, when the piezoelectric sheet 221 is excited, the main plate 236 will vibrate, and the touch portion 234 on the main plate 236 will also vibrate accordingly to achieve the vibration feedback described above. The preset distance range for the up and down reciprocating movement of the second mounting portion along the first direction A1 can be determined according to actual conditions, but it is necessary to ensure that the pressure transmission portion is still in contact with the piezoelectric sheet when the second mounting portion is farthest from the carrier module. It should be understood that in some other embodiments, the carrier module can also constrain the second mounting portion along other directions, as long as the second mounting portion can reciprocate up and down in the first direction relative to the carrier module.

[0054] like Figure 5 As shown, the pressing plate 23 forms a lever structure with the first mounting portion 231 as a fulcrum, the pressure transmission portion 233 as a first force application point, and the touch portion 234 as a second force application point, and the first force application point (i.e., the pressure transmission portion 233) and the second force application point (i.e., the touch portion 234) are on the same side of the fulcrum (i.e., the first mounting portion 231). The distance from the pressure transmission portion 233 to the first mounting portion 231 (i.e., the first force arm L1 of the lever structure) is smaller than the distance from the touch portion 234 to the first mounting portion 231 (i.e., the second force arm L2 of the lever structure). When a touch operation is applied to the touch portion 234 (i.e., the touch portion 234 is pressed), the main plate 236 is pressed toward the carrier module 21 generally along the first direction A1, the pressure transmission portion 233 further presses the piezoelectric sheet 221 accordingly, and the second mounting portion 232 moves toward the carrier module 21 along the first direction A1. After the touch portion 234 is released, the main plate 236 is reset, the second mounting portion 232 moves away from the carrier module 21 along the first direction A1, the touch portion 234 is reset to be spaced apart from the mounting surface 211 of the carrier module 21, and the pressure transmission portion 233 is reset to pre-compress the piezoelectric sheet 211.

[0055] According to the lever principle, when the piezoelectric sheet 221 provides vibration feedback, the amplitude of the main plate 236 becomes larger and larger along the direction from the pressure transmission part 233 to the second mounting part 232, and the amplitude at the touch part 234 is also greater than the amplitude at the pressure transmission part 233. Therefore, the vibration feedback felt by the user at the touch part 234 is relatively strong, thereby further improving the user's experience. Generally speaking, in the pressing plate 23, the greater the difference between the second force arm L2 and the first L1, the greater the amplitude at the touch part 234, and the stronger the vibration feedback felt by the user at the touch part 234. In one embodiment, the length of the first force arm L1 can be 30 mm, and the length of the second force arm L2 can be 60 mm. Of course, these force arms can also be set to have other lengths, which are not limited here.

[0056] It should be understood that although Figure 4 and Figure 5 The pressure transmission part 233 and the touch control part 234 are shown to be located between the first mounting part 231 and the second mounting part 232, but in fact the touch control part 234 may also be located on the side of the second mounting part 232 away from the first mounting part 231 along the second direction A2 (i.e., the second mounting part 232 is located between the pressure transmission part 233 and the touch control part 234). In this case, when the piezoelectric sheet 221 provides vibration feedback, the amplitude at the touch control part 234 is still greater than the amplitude at the pressure transmission part 233, and the user can still feel strong vibration feedback at the touch control part.

[0057] In addition, after the pressing plate 23 is mounted on the carrier module 21, the cantilever 235 described above makes it easier for the main plate 236 to vibrate up and down along the first direction A1 relative to the carrier module 21. When the piezoelectric sheet 221 provides vibration feedback, under the action of the cantilever 235, the amplitude of the main plate 236 (and the touch portion 234 on the main plate 236) is larger, and the vibration feedback felt by the user at the touch portion 234 is stronger.

[0058] Reference Figure 4 and Figure 7 , the cantilever 235 is arranged at an angle with the plate-shaped first mounting portion 231, and the cantilever 235 is also arranged at an angle with the main plate 236. For example, the cantilever 235 and the first mounting portion 231 generally form an angle of about 90 degrees, and also form an angle of about 90 degrees with the main plate 236. As a result, the first mounting portion 231 and the main plate 236 are in different planes, and the pressing plate 23 is generally zigzag, so that the pressing plate 23 matches the actual application environment and provides a vibration space for the pressing plate 23. For example, when the input device is applied to a steering wheel, the main body can be on the spokes of the steering wheel, and the first mounting portion can be at the center of the steering wheel or at the hand wheel of the steering wheel. Of course, according to the actual application environment, the cantilever can also form an angle of other angles with the first mounting portion and / or the main plate. In some cases, the cantilever can also form an angle with only one of the first mounting portion and the main plate, and be generally in the same plane with the other, which will not be repeated here.

[0059] The shape of the main body plate can also be changed according to the application environment and is not limited to a rectangle. For example, when the input device is applied to a steering wheel, the main body plate can be configured as a quadrilateral or a nearly quadrilateral shape that matches the touch area of ​​the steering wheel. In other application scenarios of the input device (for example, when applied to a vehicle dashboard, center console, or door panel), the main body plate can be configured as a long strip shape, or a polygon with an appropriate curvature that matches the top console of the vehicle.

[0060] In one embodiment, an elastic bending portion (not shown in the figure) may be further provided on the cantilever. For example, the bending portion is generally U-shaped. The bending portion further increases the elasticity of the cantilever, making it easier for the main plate to vibrate up and down along the first direction relative to the carrier module. In this way, the vibration feedback felt by the user at the touch portion is stronger.

[0061] The cantilever can be formed as a whole with the first mounting portion and the main body plate. For example, the pressing plate can be integrally formed by injection molding, which simplifies the manufacture of the pressing plate. In other embodiments, the cantilever can be an independent component. For example, the cantilever can be an independently formed metal spring or elastic rubber member, and the first mounting portion and the main body plate are respectively connected to the two ends of the cantilever.

[0062] Reference Figure 4 and Figure 8 , an adjustment mechanism 202 is provided between the second mounting portion 232 and the carrier module 21. During the manufacturing process of the input device, the bending degree of the pressing plate 23 toward the carrier module 21 can be adjusted along the first direction A1 by the adjustment mechanism 202 to adjust the pre-tightening degree of the pressure transmission portion 233 on the piezoelectric sheet 221. It should be noted that in the actual use of the input device, it is usually not necessary to adjust the pre-tightening degree of the pressure transmission portion on the piezoelectric sheet to avoid causing malfunction or damage to the input device. Of course, according to the actual situation, in special circumstances (for example, when maintaining the input device), the pre-tightening degree of the pressure transmission portion on the piezoelectric sheet can also be adjusted by the adjustment mechanism.

[0063] like Figure 5As shown, when adjusting the pre-tightening degree of the pressure transmission part 233 on the piezoelectric sheet 221, the pressing plate 23 forms a lever structure with the first mounting part 231 as the fulcrum, the pressure transmission part 233 as the first force application point, and the second mounting part 232 as the third force application point. The distance from the pressure transmission part 233 to the first mounting part 231 forms the first force arm L1 of the lever structure, and the distance from the second mounting part 232 to the first mounting part 231 forms the third force arm L3 of the lever structure, and the third force arm L3 is greater than the first force arm L1. In one embodiment, the length of the third force arm L3 can be 90 mm, and the length of the first force arm L1 can be 30 mm (as described above). Of course, the third force arm L3 can also be set to have other lengths, which are not limited here. According to the lever effect, the movement distance of the second mounting part 232 along the first direction A1 is greater than the movement distance of the pressure transmission part 233 along the first direction A1, for example, the proportional relationship between the two is substantially equal to the ratio of the force arm L3 to the force arm L1. In this way, when the adjustment mechanism 202 changes the bending degree of the pressing plate 23 toward the carrier module 21 in the first direction A1 to a large extent, the pre-pressing degree of the pressure transmitting part 233 on the piezoelectric sheet 221 will change to a small extent. Thus, the pre-pressing degree of the pressure transmitting part 233 on the piezoelectric sheet 221 can be accurately controlled by the adjustment mechanism 202.

[0064] Specifically in this embodiment, refer to Figure 4 and Figure 8 , the carrier module 21 is configured with a receiving groove 213 whose opening faces the second mounting portion 232. The receiving groove 213 has an upper wall 214a and a lower wall 214b that are opposite to each other along the first direction A1. A through hole 215 is provided along the first direction A1 on the upper wall 214a. The second mounting portion 232 of the pressing plate 23 is inserted into the receiving groove 213 and aligned with the through hole 215. The adjustment mechanism 202 is implemented as an adjustment pin that matches the through hole 215. After the adjustment pin is installed in the through hole 215, the end of the adjustment pin abuts the second mounting portion 232. When the adjustment pin is further moved along the first direction A1 toward the lower wall 214b, the second mounting portion 232 is pressed by the adjustment pin so that the deformation degree of the main plate 236 toward the carrier module 21 becomes larger, and the pre-tightening degree of the pressure transmission portion 233 on the piezoelectric sheet 221 also becomes larger. When the adjustment pin is moved away from the lower wall 214b in the first direction A1, the pre-compression degree of the pressure transmission part 233 on the piezoelectric sheet 221 becomes smaller. Thus, the pre-compression degree of the pressure transmission part 233 on the piezoelectric sheet 221 is adjusted by the adjustment mechanism (or adjustment pin).

[0065] It should be noted that the end of the adjustment pin and the lower wall 214b together define the distance range of the second mounting portion 232 mentioned above to reciprocate up and down along the first direction A1 relative to the carrier module 21. When the adjustment pin is adjusted, the second mounting portion 232 remains spaced apart from the lower wall 214b so that the second mounting portion 232 can reciprocate up and down along the first direction A1.

[0066] In one embodiment, the through hole 215 is a bolt hole (for example, a nut is disposed in the through hole 215), and the adjusting pin is an adjusting bolt adapted to the bolt hole. In this way, the installation of the adjusting bolt can be adjusted by changing the angle at which the adjusting bolt is screwed in the bolt hole, thereby adjusting the pre-tightening degree of the pressure transmission part 233 on the piezoelectric sheet 221. This adjustment method is simple and easy to implement, and the adjustment accuracy is also high.

[0067] In other embodiments, the adjustment mechanism may also be in any other suitable form. For example, the adjustment mechanism may include a rubber nail installed in the through hole, and the rubber nail is in contact with the second mounting portion. The adjustment mechanism may also include a gasket arranged between the upper wall and the second mounting portion.

[0068] In some embodiments, no adjustment mechanism may be provided between the second mounting portion and the carrier module. Fig. 9 As shown, the second mounting portion 232 abuts against the upper wall 214a of the receiving groove 213, and there is no adjustment mechanism between the second mounting portion 232 and the upper wall 214a of the receiving groove 213. In this case, the upper wall 214a and the lower wall 214b of the receiving groove 213 define a distance range for the second mounting portion 232 to reciprocate up and down along the first direction A1.

[0069] Also like Figure 4 As shown, a spacer 216 is provided at the lower wall 214b, and the spacer 216 protrudes toward the second mounting portion 232. The spacer 216 is used to limit the pressing degree of the pressure transmitting portion 233 on the piezoelectric sheet 221 within a preset range. The preset range of the pressing degree of the piezoelectric sheet can be determined according to actual conditions.

[0070] The preset range can be determined based on the following methods. In some embodiments, the spacer is rigid. When the piezoelectric sheet 221 is not pressed by the pressure transmission part 233, the spacer 216 is spaced apart from the second mounting part 232 so that the second mounting part 232 can reciprocate up and down along the first direction A1. When the piezoelectric sheet 221 is pressed and the piezoelectric assembly 22 is triggered, the spacer 216 abuts against the second mounting part 232 to prevent the pressure transmission part 233 from over-pressing the piezoelectric sheet 221 and causing damage to the piezoelectric sheet 221. In other embodiments, when the piezoelectric sheet is pressed and the piezoelectric assembly is triggered, the spacer does not abut against the second mounting part until the piezoelectric sheet is about to be over-pressed by the pressure transmission part, and the spacer abuts against the second mounting part, which can also prevent the piezoelectric sheet from being crushed. In addition, this rigid spacer can also be arranged on the inner surface of the pressing plate facing the carrier module and protrude toward the mounting surface. In other embodiments, the spacer can also be elastic (for example, a spring or a rubber pad). Such a spacer can always be in contact with the lower wall and the second mounting portion. When the second mounting portion moves toward the lower wall along the first direction, the spacer is compressed. Before the piezoelectric sheet is over-pressurized, the spacer is compressed to the limit, thereby preventing the piezoelectric sheet from being crushed. Of course, such an elastic spacer can also be spaced apart from the lower wall or the second mounting portion before being compressed.

[0071] In other embodiments, the spacer may also be disposed on a side of the pressure transmitting portion away from the first mounting portion along the first direction A1, for example, at other positions within the range corresponding to the pressure transmitting portion to the second mounting portion.

[0072] It should also be understood that, when the distance between the touch portion and the mounting surface of the carrier module is small and the pressure transmission portion does not over-press the piezoelectric sheet, there is no need to provide a spacer.

[0073] Reference Figure 3 and Figure 4 The input device 2 further includes a touch assembly 24. The touch assembly 24 includes a touch film 241 and a second wire harness 242 electrically connected to the touch film 241. The touch film 241 is disposed on the inner surface of the pressing plate 23 facing the carrier module 21 and corresponds to the touch portion 243 (i.e., the orthographic projection of the touch portion 243 along the first direction A1 is within the range of the touch film 241). The second wire harness 242 is also electrically connected to the circuit board 201 so that the touch film 241 and the circuit board 201 can communicate.

[0074] Also like Figure 4As shown, the number of touch control parts 234 on the pressing plate 23 is two, and the two touch control parts 234 are spaced apart from each other. In some other embodiments, the number of touch control parts can be one or more. The relative positions of the multiple touch control parts 234 can be flexibly arranged according to the actual usage scenario. Each touch control part can be used to adjust the front and rear position of the seat, adjust the height of the seat cushion, input the ambient light of the device, adjust the volume of the audio, adjust the angle of the rearview mirror, adjust any of the display areas of the electronic rearview mirror, etc.

[0075] In the case where a plurality of touch control parts 234 are provided on the pressing plate 23, the touch control film 241 corresponds to all of the touch control parts 234. In this case, the touch control film 241 is used to identify which touch control part 234 is subjected to a touch control operation, so that the corresponding electronic device responds to the touch control operation. This is easy to implement for those skilled in the art and will not be described in detail here.

[0076] In one embodiment, the touch film is a capacitive touch film. Such touch films are well known to those skilled in the art and will not be described in detail herein. Of course, other types of touch films may also be used according to actual conditions.

[0077] A second embodiment of the input device is described below.

[0078] Fig.10 The input device of the second embodiment is schematically shown in cross-section. Figure 4 The input devices of the first embodiment shown are basically the same. For simplicity, only the main differences between the two are described below.

[0079] like Fig.10 As shown, in the input device 2 of the second embodiment, a mark (not shown in the figure) is provided on the touch portion 234. For example, the mark is light-transmissive, and a light-emitting device 217 (for example, LED) corresponding to the mark is provided on the carrier module 21. In this way, the light emitted by the light-emitting device 217 will light up the mark to guide the user's touch operation. It should be noted that the light-emitting device 217 should not hinder the reciprocating up and down movement of the pressing plate 23 (or the main plate 236) relative to the carrier module 21 along the first direction A1.

[0080] In one embodiment, the logo may also be a pattern or design set on the touch portion, which will not be described in detail here.

[0081] A third embodiment of the input device is described below.

[0082] Fig.11 The input device of the third embodiment is schematically shown in cross-section. Figure 4The input devices of the first embodiment shown are basically the same. For simplicity, only the main differences between the two are described below.

[0083] like Fig.11 As shown, in the input device 2 of the third embodiment, a display component 218 (for example, a display panel) is provided on the mounting surface 211 of the carrier module 21. An opening 238 matching the display component 218 is provided on the main body plate 236. The display component 218 is embedded in the opening 238 and has no connection with the main body plate 236 (or the pressing plate 23), which prevents the display component 218 from hindering the up and down reciprocating movement of the main body plate 236 (or the pressing plate 23) along the first direction A1. The display component 218 can be used to display decorative patterns or other required information.

[0084] In other embodiments not shown, the display component may also be disposed on the main panel 236, which will not be described in detail here.

[0085] In some embodiments, the display assembly may also be attached to a surface of the main body panel away from the carrier module. For example, the display assembly may be a liquid crystal panel, an OLED panel, a min-LED panel, or a micro-LED panel, etc. These display panels are well known to those skilled in the art and will not be described in detail here.

[0086] It should be noted that the present invention (e.g., the inventive concept, etc.) has been described in the specification of this patent document and / or illustrated in the drawings according to the exemplary embodiments; the embodiments of the present invention are presented only by way of example and are not intended to limit the scope of the present invention. The structure and / or arrangement of the elements of the inventive concept embodied in the present invention as described in the specification and / or illustrated in the drawings is illustrative only. Although the exemplary embodiments of the present invention have been described in detail in this patent document, it is easy for a person of ordinary skill in the art to understand that equivalents, modifications, changes, etc. of the subject matter of the exemplary embodiments and alternative embodiments are possible and are considered to be within the scope of the present invention; all of these subject matters (e.g., modifications, changes, embodiments, combinations, equivalents, etc.) are intended to be included within the scope of the present invention. It should also be noted that various / other modifications, changes, substitutions, equivalents, changes, omissions, etc. may be made in the configuration and / or arrangement of the exemplary embodiments (e.g., in terms of concepts, designs, structures, devices, forms, assemblies, constructions, means, functions, systems, processes / methods, steps, the order of process / method steps, operations, operating conditions, performance, materials, compositions, combinations, etc.). ) without departing from the scope of the present invention; all such subject matter (e.g., modifications, variations, embodiments, combinations, equivalents, etc.) are intended to be included within the scope of the present invention. The scope of the present invention is not intended to be limited to the subject matter (e.g., details, structures, functions, materials, behaviors, steps, sequences, systems, results, etc.) described in the specification and / or drawings of this patent document. Considering that the claims of this patent document will be appropriately interpreted as covering the full scope of the subject matter of the present invention (e.g., including any and all such modifications, variations, embodiments, combinations, equivalents, etc.); it should be understood that the terms used in this patent document are intended to provide a description of the subject matter of the exemplary embodiments, rather than as a limitation on the scope of the present invention.

[0087] It should also be noted that, depending on the exemplary embodiment, the present invention may include conventional technologies (such as technologies implemented and / or integrated in exemplary embodiments, modifications, variations, combinations, equivalents), or may include any other applicable technologies (present and / or future) with the ability to perform the functions and processes / operations described in the specification and / or illustrated in the figures. All of these technologies (such as technologies implemented in embodiments, modifications, variations, combinations, equivalents, etc.) are considered to be within the scope of the present invention of this patent document.

Claims

1. An input device, characterized in that: The input device comprises: A carrier module having a mounting surface; A piezoelectric assembly comprising a piezoelectric sheet disposed on the mounting surface; and A pressing plate is mounted on the carrier module; the pressing plate comprises a pressure transmission part corresponding to the piezoelectric sheet and a touch control part spaced apart from the pressure transmission part; the pressure transmission part pre-presses the piezoelectric sheet along a first direction from the pressing plate to the mounting surface, and the touch control part is spaced apart from the mounting surface along the first direction; Among them, the piezoelectric sheet is suitable for being pressed by the pressure transmission part when a touch operation is applied to the touch part, so that the piezoelectric component is triggered in response to the touch operation, and / or the piezoelectric sheet is suitable for being excited and driving the panel to vibrate after the piezoelectric component is triggered, so as to provide vibration feedback at the touch part.

2. The input device according to claim 1, characterized in that The pressing plate also has: A first mounting portion, fixedly connected to the carrier module; and The second mounting portion is spaced apart from the first mounting portion; the second mounting portion is constrained by the bearing module so that the second mounting portion is suitable for reciprocating along the first direction within a preset distance range.

3. The input device according to claim 2, characterized in that: The pressure transmission part and the touch part are arranged on a side of the first mounting part facing the second mounting part and are spaced apart along a second direction from the first mounting part to the second mounting part; the distance from the pressure transmission part to the first mounting part is smaller than the distance from the touch part to the first mounting part.

4. The input device according to claim 2, characterized in that: The pressure transmission portion is located between the first mounting portion and the second mounting portion.

5. The input device according to any one of claims 2 to 4, characterized in that: The pressing plate includes an elastic cantilever extending from the first mounting portion and a main body plate extending from the cantilever; the cantilever is spaced apart from the carrying module, and the second mounting portion is connected to the main body plate; The pressure transmission part and the touch control part are located on the main plate.

6. The input device according to claim 5, characterized in that The first mounting portion is plate-shaped; the cantilever is arranged at an angle to the first mounting portion, and / or the cantilever is arranged at an angle to the main plate, so that the first mounting portion and the main plate are in different planes.

7. The input device according to any one of claims 2 to 4, characterized in that: An adjustment mechanism is provided between the second mounting portion and the carrier module; the adjustment mechanism is suitable for adjusting the bending degree of the pressing plate toward the carrier module along the first direction to adjust the pre-pressure degree of the piezoelectric sheet by the pressure transmission portion.

8. The input device according to claim 7, characterized in that: A through hole extending along the first direction is provided on the carrier module; the adjustment mechanism includes an adjustment pin; The adjusting pin is adapted to be arranged in the through hole, and the second mounting portion is adapted to be pressed by the adjusting pin toward the carrying module along the first direction.

9. The input device according to claim 8, characterized in that The through hole is a bolt hole, and the adjusting pin is an adjusting bolt matched with the bolt hole.

10. The input device according to claim 1, characterized in that The pressing plate is configured with a contact protruding from the pressure transmitting portion toward the piezoelectric sheet.

11. The input device according to any one of claims 2 to 4, characterized in that: A spacer is provided between the pressing plate and the mounting surface of the carrier module, and the spacer is located on a side of the pressure transmission part away from the first mounting part; the spacer is used to limit the pressing degree of the pressure transmission part on the piezoelectric sheet within a preset range.

12. The input device according to claim 1, characterized in that The input device further includes a touch control component, and the touch control component includes a touch control film; the touch control film is arranged on the pressing plate and corresponds to the touch control part.

13. The input device according to claim 12, characterized in that: The pressing plate is provided with a plurality of touch control parts; and the touch control film corresponds to the plurality of touch control parts.

14. The input device according to claim 1, characterized in that A mark is arranged on the touch control portion.

15. The input device according to claim 14, characterized in that The logo is a light-transmitting structure; a backlight module is provided on the carrying module, and the backlight module corresponds to the logo to light up the logo.

16. The input device according to claim 1, characterized in that A display component is arranged on the pressing plate and / or the carrying module.

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