Pressure touchpad, pressure touchpad assembly, and electronic device

Abstract

The application provides a pressure touchpad, a pressure touchpad assembly and an electronic device. The pressure touchpad comprises a printed circuit board, the printed circuit board is stacked on a pressure sensor support along a first direction, wherein the first direction is a direction perpendicular to a plane of the pressure touchpad; a pressure sensor, the pressure sensor is arranged between the printed circuit board and the pressure sensor support; a pressure sensor support, the pressure sensor support is used for bearing the printed circuit board and the pressure sensor, and fixedly connecting the pressure touchpad to an external shell; wherein the pressure sensor support comprises a reinforcing area, a non-reinforcing area and a flexible arm, the reinforcing area is fixedly connected with the printed circuit board, the non-reinforcing area is used for fixedly connecting with the external shell, and the flexible arm connects the reinforcing area and the non-reinforcing area. The application improves the strength and rigidity of the touchpad, and reduces the depression amount of the touchpad when pressed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of touch control, in particular to a pressure touchpad, a pressure touchpad assembly and an electronic device. BACKGROUND

[0002] A touchpad perceives the position and movement of a user's finger through a touch sensor and controls the movement of a pointer on a display interface. A conventional touchpad detects a user's pressing action through physical keys and executes functions such as confirmation or menu call. However, the user's pressing action can only be performed in an area of less than 1 / 2 of the touchpad, and cannot be performed in any area of the entire cover plate.

[0003] A pressure touchpad uses pressure detection to replace physical key detection and realizes operations such as confirmation and menu call, thereby solving the problem that the conventional touchpad can only be pressed locally. The pressure touchpad can adjust the response force and vibration feedback intensity of the user's pressing action according to the user's usage habit, and provides the user with more convenient and comfortable operation experience. The quality of the user experience depends largely on the design of the touchpad structure.

[0004] Therefore, how to improve the performance of pressure detection of the touchpad to improve the user experience has become a problem to be solved. SUMMARY

[0005] Therefore, the present application provides a pressure touchpad, a pressure touchpad assembly and an electronic device, which has good pressure detection sensitivity, improves the strength and rigidity of the touchpad, and reduces the depression amount of the touchpad when pressed.

[0006] In one aspect, the application provides a pressure touchpad, comprising a printed circuit board, a pressure sensor, a pressure sensor support and a touch controller; the printed circuit board is stacked on the pressure sensor support along a first direction, a touch electrode layer is arranged on a side of the printed circuit board away from the pressure sensor support, the touch electrode layer is used to sense the touch position of a finger when the finger touches or presses the pressure touchpad, and output corresponding touch sensing signals, the first direction is a direction perpendicular to the plane of the pressure touchpad; the pressure sensor is arranged between the printed circuit board and the pressure sensor support, and is used to deform when the finger presses the pressure touchpad, and output corresponding pressure sensing signals; the touch controller is arranged on a side of the printed circuit board facing the pressure sensor support, the touch controller is electrically connected with the touch electrode layer and the pressure sensor respectively, the touch controller is used to receive the touch sensing signals and the pressure sensing signals, and determine the touch position of the finger on the pressure touchpad and the pressure applied by the finger; the pressure sensor support is used to carry the printed circuit board and the pressure sensor, and fixedly connect the pressure touchpad to an external housing; wherein the pressure sensor support comprises a reinforcing area, a non-reinforcing area and a flexible arm, the reinforcing area is fixedly connected with the printed circuit board, the non-reinforcing area is used to be fixedly connected with the external housing, and the flexible arm connects the reinforcing area and the non-reinforcing area; the non-reinforcing area is provided with a plurality of cantilever beams, a side of the cantilever beam facing the printed circuit board is provided with the pressure sensor, and the cantilever beam is connected with the printed circuit board through an elastic gasket.

[0007] The pressure touchpad provided by the application forms a gap between the touchpad and the external housing by using the pressure sensor support, which is beneficial to improve the pressing feeling of the user, places the pressure sensor on the cantilever beam formed by the non-reinforcing area of the pressure sensor support, connects the reinforcing area and the non-reinforcing area by using the flexible arm, fixedly connects the reinforcing area with the printed circuit board, and fixedly connects the non-reinforcing area with the external housing, thereby being beneficial to improve the strength and rigidity of the whole pressure touchpad, reduce the amount of sinking of the pressure touchpad when pressed, and at the same time, the pressure touchpad has the performance of high pressure detection sensitivity.

[0008] As described above, the projection of the reinforcing area in a plane perpendicular to the first direction is a closed structure, and the reinforcing area is arranged around the outside of the non-reinforcing area.

[0009] As described above, the area of the reinforcing area is at least 75% of the area of the pressure sensor support.

[0010] The pressure touchpad as claimed in any one of the preceding claims, wherein the first non-reinforced area comprises a first connecting plate extending in a third direction and a second connecting plate extending in a second direction, one end of the first connecting plate is connected to the second connecting plate towards the outer periphery of the pressure sensor support, and the other end of the first connecting plate is connected to the first flexible arm, and the second non-reinforced area comprises a third connecting plate extending in the third direction and a fourth connecting plate extending in the second direction, one end of the third connecting plate is connected to the fourth connecting plate towards the outer periphery of the pressure sensor support, and the other end of the third connecting plate is connected to the second flexible arm, wherein the third direction is along the long side direction of the pressure touchpad, and the second direction is along the short side direction of the pressure touchpad.

[0011] The pressure touchpad as claimed in any one of the preceding claims, wherein the plurality of cantilever beams comprises a first cantilever beam, a second cantilever beam, a third cantilever beam and a fourth cantilever beam, and specifically, two ends of the second connecting plate form the first cantilever beam and the second cantilever beam respectively, and two ends of the fourth connecting plate form the third cantilever beam and the fourth cantilever beam respectively.

[0012] The pressure touchpad as claimed in any one of the preceding claims, wherein the non-reinforced area comprises a first fixing hole, a second fixing hole, a fourth fixing hole and a fifth fixing hole, in the first non-reinforced area, the first fixing hole is arranged at one end of the second connecting plate to form a fixed end of the first cantilever beam, and the second fixing hole is arranged at the other end of the second connecting plate to form a fixed end of the second cantilever beam, and in the second non-reinforced area, the fourth fixing hole is arranged at one end of the fourth connecting plate to form a fixed end of the third cantilever beam, and the fifth fixing hole is arranged at the other end of the fourth connecting plate to form a fixed end of the fourth cantilever beam.

[0013] The pressure touchpad as claimed in any one of the preceding claims, wherein the non-reinforced area further comprises a third fixing hole and a sixth fixing hole, in the first non-reinforced area, the third fixing hole is arranged at one end of the first connecting plate for connecting the first flexible arm, and in the second non-reinforced area, the sixth fixing hole is arranged at one end of the third connecting plate for connecting the second flexible arm.

[0014] The pressure touchpad as claimed in any one of the preceding claims, wherein the pressure sensor support is a stainless steel support with a hardness of 3 / 4.

[0015] The pressure touchpad as described above, optionally, further comprises an actuator comprising a linear motor, a center of the pressure sensor support is provided with an actuator avoiding hole for avoiding the actuator, a cover plate is stacked on a side of the printed circuit board away from the pressure sensor support along the first direction, the cover plate and the printed circuit board are fixedly bonded by a first adhesive layer, and the printed circuit board and the reinforcing area are fixedly bonded by a second adhesive layer.

[0016] In another aspect, the application provides a pressure touchpad assembly comprising a module fixing support and the pressure touchpad as described above, the pressure touchpad being mounted on the module fixing support along the first direction.

[0017] The pressure touchpad assembly as described above, optionally, a side of the module fixing support facing the pressure sensor support is provided with a limiting protrusion, along the first direction, a thickness of the limiting protrusion is less than a thickness of the elastic gasket in a free state.

[0018] The pressure touchpad assembly as described above, optionally, the limiting protrusion is arranged on an outer circumferential side of the module fixing support.

[0019] The pressure touchpad assembly as described above, optionally, the limiting protrusion comprises a plurality of protruding portions, at least two adjacent protruding portions are connected to each other, or at least two adjacent protruding portions are arranged with a spacing.

[0020] The pressure touchpad assembly as described above, optionally, the plurality of protruding portions comprises a first protruding portion, a second protruding portion, a third protruding portion and a fourth protruding portion, the first protruding portion and the third protruding portion extend along a second direction, and the second protruding portion and the fourth protruding portion extend along a third direction.

[0021] The pressure touchpad assembly as described above, optionally, the plurality of protruding portions comprises a first protruding portion, a second protruding portion, a third protruding portion and a fourth protruding portion, the first protruding portion and the third protruding portion extend along a second direction, and the second protruding portion and the fourth protruding portion extend along a third direction; the first protruding portion, the second protruding portion and the third protruding portion are sequentially connected end to end, and the fourth protruding portion is arranged with a spacing from the first protruding portion and the third protruding portion.

[0022] The pressure touchpad assembly as described above, optionally, the module fixing support is provided with a limiting groove corresponding to the cantilever beam; the limiting groove is located within a range enclosed by the first protruding portion, the second protruding portion, the third protruding portion and the fourth protruding portion.

[0023] The pressure touchpad assembly as described above, optionally, the thickness of the limiting protrusion is 0.25-0.35mm along the first direction.

[0024] The pressure touchpad assembly as described above, optionally, further comprising a module support bracket, the module support bracket is arranged on the side of the module fixing bracket away from the pressure touchpad module and is located at one end of the module fixing bracket; the module support bracket is integrally formed with the module fixing bracket.

[0025] The pressure touchpad assembly as described above, optionally, a plurality of first fixing holes are arranged in the non-reinforced area, a plurality of first connecting holes are arranged on the module fixing bracket, the plurality of first fixing holes and the plurality of first connecting holes are one-to-one corresponding, and a fastener is fixed in the corresponding first fixing hole after passing through the first connecting hole.

[0026] In still another aspect, the application provides an electronic device comprising a C shell, the C shell is provided with a mounting port, and the mounting port is provided with the pressure touchpad assembly as described above.

[0027] The application provides a pressure touchpad, a pressure touchpad assembly and an electronic device. The pressure touchpad comprises a pressure touchpad module, the pressure touchpad module comprises a touch sensor, a printed circuit board, a pressure sensor, a pressure sensor support and a touch controller; the printed circuit board is stacked on the pressure sensor support along a first direction, the touch sensor, the pressure sensor and the touch controller are all arranged on the printed circuit board; the touch sensor is arranged on a side of the printed circuit board away from the pressure sensor support, the touch sensor is used for sensing a touch position of a finger when the finger touches or presses the pressure touchpad and outputting a corresponding touch sensing signal; the pressure sensor is used for deforming under the action of pressure applied by the finger when the finger presses the pressure touchpad and outputting a corresponding pressure sensing signal; the touch controller is arranged on a side of the printed circuit board facing the pressure sensor support, the touch controller is electrically connected with the touch sensor and the pressure sensor, and the touch controller is used for receiving the touch sensing signal and the pressure sensing signal and determining the touch position of the finger on the pressure touchpad and the pressure applied by the finger; the pressure sensor support is used for supporting the printed circuit board and mounting the pressure touchpad module to a module fixing support, the pressure sensor support is provided with an electronic component avoiding hole used for accommodating the touch controller; the pressure sensor support comprises a reinforcing area, a non-reinforcing area and a flexible arm, the reinforcing area is fixedly connected with the printed circuit board, the non-reinforcing area is used for being fixedly connected with the module fixing support, and the flexible arm connects the reinforcing area and the non-reinforcing area; the non-reinforcing area is provided with a plurality of cantilever beams, the cantilever beams are provided with the pressure sensor on a side facing the printed circuit board, and the cantilever beams are connected with the printed circuit board through elastic gaskets. By arranging the pressure sensor support, the pressure sensor support comprises the reinforcing area, the non-reinforcing area and the flexible arm, the reinforcing area is fixedly connected with the printed circuit board, the non-reinforcing area is used for being fixedly connected with the module fixing support, so as to facilitate improving the strength and rigidity of the pressure touchpad module as a whole, reducing the sinking amount of the pressure touchpad when being pressed, and improving the user experience. BRIEF DESCRIPTION OF DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the application or the related art, the following will briefly introduce the drawings needed to be used in the embodiments or the related art description. Obviously, the drawings in the following description are some embodiments of the application, and for those skilled in the art, other drawings can also be obtained without creative labor.

[0029] Figure 1 An exploded view of the pressure touchpad provided by an embodiment of the application;

[0030] Figure 2 A structural diagram of the pressure sensor support provided by an embodiment of the application;

[0031] Figure 3A structural diagram of a pressure touchpad assembly according to an embodiment of the present application is provided.

[0032] Figure 4 A structural diagram of a module fixing support according to an embodiment of the present application is provided.

[0033] Figure 5 A structural diagram of an electronic device according to an embodiment of the present application is provided.

[0034] Figure 6 An exploded view of a pressure touchpad according to another embodiment of the present application is provided.

[0035] Figure 7 A structural diagram of a pressure sensor support according to another embodiment of the present application is provided.

[0036] Figure 8 A structural diagram of a pressure touchpad assembly according to another embodiment of the present application is provided.

[0037] Figure 9 A structural diagram of an electronic device according to an embodiment of the present application is provided. DETAILED DESCRIPTION

[0038] In order to make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application.

[0039] Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of the present application. The following embodiments and features in the embodiments can be combined with each other without conflict.

[0040] The content of the embodiments of the present application will be described in detail below with reference to the drawings, so that those of ordinary skill in the art can understand the content of the present application in more detail.

[0041] Figure 1 An exploded view of a pressure touchpad module according to an embodiment of the present application is provided. Figure 2 A structural diagram of a pressure sensor support according to an embodiment of the present application is provided. Please refer to Figures 1-2 The present embodiment provides a pressure touchpad module 100 (hereinafter referred to as a pressure touchpad or a touchpad) including a cover plate 130, a printed circuit board 120, a pressure sensor 170 and a pressure sensor support 110 arranged in sequence along a first direction Z.

[0042] The cover plate 130 can be a glass cover plate or other protective cover plate, and is mainly used to provide an input surface for finger touch or press, and to protect the printed circuit board 120 and the pressure sensor 170 on the side of the cover plate 130 facing the pressure sensor support 110, i.e., the printed circuit board 120 and the pressure sensor 170 below the cover plate 130. In specific operation, a user can touch or move on the input surface provided by the cover plate 130 with a finger to move a pointer on the display interface of the electronic device or to control the electronic device to execute instructions related to the touch operation; and the finger can press the cover plate 130 synchronously when touching or moving on the cover plate 130 to apply a downward pressure to the touchpad 100 to control the electronic device to execute instructions related to the press operation. It should be understood that although the glass cover plate or protective cover plate is taken as an example in the embodiment, the cover plate 130 can also be other functional components of the electronic device, such as a component with display function, in some specific application scenarios.

[0043] The printed circuit board 120 is fixedly connected by the first adhesive layer 140 and the cover plate 130, and is provided with a touch electrode layer on the side of the printed circuit board 120 facing away from the pressure sensor support 110, i.e., the touch electrode layer is laid on the upper surface of the printed circuit board 120, and is mainly used to detect the touch position of the finger on the cover plate 130 and the movement of the finger on the cover plate 130, and to output the position coordinate information of the finger touch or the dynamic vector information generated by the movement of the finger to the main controller of the electronic device. In addition to carrying and supporting the touch electrode layer, the printed circuit board 120 can also carry electronic components and circuits of the pressure touchpad; the electronic components include, for example, a touch controller 190 and an actuator 180. The touch controller 190 is installed on the lower surface of the printed circuit board 120 and is electrically connected to the touch electrode layer and the pressure sensor 170 through the connection lines of the printed circuit board 120, and is used to provide a driving signal to the touch electrode layer to drive capacitive touch detection, and to receive touch sensing signals and pressure sensing signals output by the touch electrode layer and the pressure sensor 170 when the finger is pressed on the touchpad 100, and to determine finger position information and the pressure applied by the finger based on the touch sensing signals and the pressure sensing signals. In addition, the touch controller 190 can also be connected to the actuator 180, and is further used to drive the actuator 180 to perform vibration feedback in response to the detected pressure. In specific embodiments, the touch controller 190 can be a touch chip integrating pressure detection and touch position detection, or can include a pressure detection chip and a touch chip arranged separately for detecting pressure and detecting touch position. The actuator 180 can be a linear motor.

[0044] The pressure sensor 170 is a resistance pressure sensor, also known as a piezoresistive force sensor, which is arranged between the printed circuit board 120 and the pressure sensor support 110. As an embodiment, the pressure sensor 170 can be a strain gauge arranged on a cantilever beam of the pressure sensor support 110, which is bonded to the lower surface of the printed circuit board 120 through the elastic gasket 160; the pressure applied by the finger pressing the touchpad 100 can be transmitted to the strain gauge through the cantilever beam, so that the strain gauge deforms and the resistance value changes, and the pressure can be calculated according to the resistance value change.

[0045] The pressure sensor support 110 can be a metal support for providing support for the pressure sensor 170, mounting the touchpad 100 to the external housing, supporting the printed circuit board 120 and increasing the hardness of the touchpad 100 to prevent the touchpad 100 from collapsing when pressed. The pressure sensor support 110 is provided with a reinforcing area 111, a non-reinforcing area 112 and a flexible arm 113. The reinforcing area 111 includes a part of the pressure sensor support 110 fixedly connected to the printed circuit board 120; the non-reinforcing area 112 includes a part of the pressure sensor support 110 for fixedly connecting to the external housing, for example, the external housing can include a module fixing support; the flexible arm 113 is a connecting arm between the reinforcing area 111 and the non-reinforcing area 112, for example, a flexible connecting arm.

[0046] The reinforcing area 111 of the pressure sensor support 110 is fixedly connected to the printed circuit board 120 through the second adhesive layer 150, which supports the printed circuit board 120 and increases the hardness of the touchpad 100; in a plane perpendicular to the first direction Z, the reinforcing area 111 is arranged outside the non-reinforcing area 112; the projection of the reinforcing area 111 is a closed structure, which is beneficial to improve the supporting area of the pressure sensor support 110 to the cover plate 130 and the printed circuit board 120, and improve the rigidity of the touchpad 100 itself, preventing the touchpad 100 from collapsing when the finger presses the upper surface of the cover plate 130.

[0047] In an implementation, the pressure sensor support 110 is provided with a first opening part 114 and a second opening part 115, and the first opening part 114 and the second opening part 115 are respectively arranged near two sides of the pressure sensor support 110 along the third direction X. The non-reinforced area 112 includes a first non-reinforced area 1121 arranged in the first opening part 114 and a second non-reinforced area 1122 arranged in the second opening part 115. The first non-reinforced area 1121 includes a first connecting plate 11211 extending along the third direction X and a second connecting plate 11212 extending along the second direction Y, and two ends of the second connecting plate 11212 respectively form a first cantilever beam 11213 and a second cantilever beam 11214. The first cantilever beam 11213 and the second cantilever beam 11214 are respectively connected to the printed circuit board 120 through elastic gaskets 160, so that gaps are formed between the first cantilever beam 11213 and the second cantilever beam 11214 and the printed circuit board 120. The second non-reinforced area 1122 includes a third connecting plate 11221 extending along the third direction X and a fourth connecting plate 11222 extending along the second direction Y, and two ends of the fourth connecting plate 11222 respectively form a third cantilever beam 11223 and a fourth cantilever beam 11224. The third cantilever beam 11223 and the fourth cantilever beam 11224 are respectively connected to the printed circuit board 120 through elastic gaskets 160, so that gaps are formed between the third cantilever beam 11223 and the fourth cantilever beam 11224 and the printed circuit board 120. The elastic gaskets 160 can be gaskets with elastic expansion, such as silica gel pads, springs, etc. It can be understood that due to the presence of the elastic gaskets 160, the non-reinforced area 112 is lifted by a certain distance in the first direction Z, so that gaps are formed between the non-reinforced area 112 and the printed circuit board 120. The four cantilever beams of the non-reinforced area 112 are arranged near four corners of the pressure sensor support 110, and a pressure sensor 170 is arranged on a side of the four cantilever beams away from the pressure sensor support 110, so that the pressure can be accurately detected when the finger presses any position of the touch plate. When the finger presses the touch plate, the touch plate 100 moves towards the pressure sensor support 110, the gap between the non-reinforced area 112 and the printed circuit board 120 decreases, the pressure is transmitted to the cantilever beams through the elastic gaskets 160 to cause deformation of the cantilever beams, the pressure sensor 170 deforms correspondingly, and then the resistance value of the pressure sensor 170 changes, and the size of the pressure can be calculated according to the change of the resistance value. When the pressure is removed, the gap returns to the initial state under the action of the restoring force of the elastic gaskets. The design of the pressure sensor support 110 structure improves the pressing feeling of the user under the condition of ensuring the detection accuracy of the pressure sensor 170.

[0048] The non-reinforced area 112 is provided with a plurality of non-reinforced area fixing holes 1120, each of which corresponds to a fastener for fixedly connecting the non-reinforced area 112 and the outer shell to fix the pressure sensor support 110 on the outer shell. Specifically, the non-reinforced area fixing holes 1120 include a first fixing hole 11201, a second fixing hole 11202, a third fixing hole 11203, a fourth fixing hole 11204, a fifth fixing hole 11205, and a sixth fixing hole 11206. In the first non-reinforced area 1121, the third fixing hole 11203 is arranged on the first connecting plate 11211 for connecting to one end of the first flexible arm 1131 (i.e., the end of the first connecting plate 11211 away from the outer circumferential side of the pressure sensor support 110), the first fixing hole 11201 is arranged on one end of the second connecting plate 11212 to form a fixed end of the first cantilever beam 11213, and the second fixing hole 11202 is arranged on the other end of the second connecting plate 11212 to form a fixed end of the second cantilever beam 11214. Similarly, in the second non-reinforced area 1122, the sixth fixing hole 11206 is arranged on the third connecting plate 11221 for connecting to one end of the second flexible arm 1132 (i.e., the end of the third connecting plate 11221 away from the outer circumferential side of the pressure sensor support 110), the fourth fixing hole 11204 is arranged on one end of the fourth connecting plate 11222 to form a fixed end of the third cantilever beam 11223, and the fifth fixing hole 11205 is arranged on the other end of the fourth connecting plate 11222 to form a fixed end of the fourth cantilever beam 11224. In this way, when the finger is pressed on the upper surface of the cover plate 130, the effectiveness and timeliness of the cantilever beams in transmitting the pressing force of the finger are ensured, which is conducive to improving the pressure detection accuracy of the touchpad 100 and ensuring the stability of the connection between the non-reinforced area and the outer shell.

[0049] The flexible arm 113 includes a first flexible arm 1131 arranged in the first opening portion 114 and a second flexible arm 1132 arranged in the second opening portion 115; wherein the two ends of the first flexible arm 1131 are respectively connected to the first non-reinforced area 1121 and the reinforced area 111, and the two ends of the second flexible arm 1132 are respectively connected to the second non-reinforced area 1122 and the reinforced area 111. The first flexible arm 1131 is connected to one end of the first connecting plate 11211 of the first non-reinforced area 1121 (i.e., the end of the first connecting plate 11211 away from the outer circumferential side of the pressure sensor support 110), and the other end of the first connecting plate 11211 is connected to the second connecting plate 11212. The second flexible arm 1132 is connected to one end of the third connecting plate 11221 of the second non-reinforced area 1122 (i.e., the end of the third connecting plate 11221 away from the outer circumferential side of the pressure sensor support 110), and the other end of the third connecting plate 11221 is connected to the fourth connecting plate 11222.

[0050] The second non-reinforced area 1122 and the second flexible arm 1132 can be structures formed by rotating the first non-reinforced area 1121 and the first flexible arm 1131 by 180 degrees, respectively.

[0051] Further, the area of the reinforced area 111 is set to be at least 75% of the area of the pressure sensor support 110. Through the setting of the specific size, the pressure sensor support 110 can better support the cover plate under the condition of ensuring the detection accuracy of the pressure sensor; in addition, the increase of the area of the reinforced area 111 is conducive to reducing the area of the non-reinforced area 112, thereby being conducive to reducing the number of fasteners to be used.

[0052] It should be understood that the third direction X is along the long side direction of the pressure touch panel 100, the second direction Y is along the short side direction of the pressure touch panel 100, and the first direction Z is perpendicular to the plane direction of the pressure touch panel 100.

[0053] To improve the rigidity of the pressure touch panel 100 itself, the first adhesive layer 140 and the second adhesive layer 150 in the embodiment can be selected as low-temperature thermosetting adhesive layers.

[0054] Specifically, the low-temperature thermosetting adhesive layer is a polyurethane-based layer, an acrylic layer, or an epoxy-based layer; the bonding temperature of the low-temperature thermosetting adhesive layer is 60-85°, the curing time of the low-temperature thermosetting adhesive layer is 100-300s; and the shear strength of the low-temperature thermosetting adhesive layer is greater than 9Mpa, thereby ensuring that the touch panel 100 itself has strong rigidity after assembly and reducing the deformation amount when pressed.

[0055] Further, the pressure sensor support 110 in the embodiment can be selected as a 3 / 4 hardness stainless steel support, thereby being conducive to improving the rigidity of the pressure sensor support 110 itself and reducing the deformation amount of the touch panel 100 when pressed.

[0056] The pressure sensor support 110 further includes a touch controller avoiding hole 116 and an actuator avoiding hole 117, both of which are arranged at the middle part of the pressure sensor support 110, i.e., sandwiched between the first opening part 114 and the second opening part 115, and are respectively used for avoiding the touch controller 190 and the actuator 180, so that the touch controller 190 and the actuator 180 are arranged on the lower surface of the printed circuit board 120, which is conducive to reducing the thickness of the touch panel 100. The reinforced area 111 is arranged around the touch controller avoiding hole 116 and the actuator avoiding hole 117, which is conducive to improving the rigidity of the periphery of the touch controller avoiding hole 116 and the actuator avoiding hole 117. In an implementation manner, the actuator 180 is a linear motor, and the actuator avoiding hole 117 is arranged at the center of the pressure sensor support 110, so that the actuator 180 is arranged at the center of the printed circuit board 120, which can improve the vibration effect of the touch panel.

[0057] By the above manner of arranging the pressure sensor support 110, the non-reinforced area 112 is fixedly connected with the external shell, and the reinforced area 111 is fixedly connected with the printed circuit board 120, so that the non-reinforced area 112 and the reinforced area 111 form a certain gap, and the non-reinforced area 112 and the reinforced area 111 still maintain a connection relationship due to the presence of the flexible arm 113. Therefore, the touchpad 100 has a certain gap relative to the external shell, and the finger presses the cover plate 130 to apply a downward pressure to the touchpad 100, and the touchpad 100 moves in the first direction Z within the gap, and the pressure can be transmitted to the pressure sensor 170 through the reinforced area 111, the non-reinforced area 112 and the flexible arm 113 of the pressure sensor support 110, so that the pressure sensor 170 is deformed to cause a change in resistance value, and the size of the pressure can be calculated according to the change in resistance value, and further tactile feedback is provided. The touchpad 100 provided in the embodiment has the performance of high pressure detection sensitivity, good pressing hand feeling, high hardness, and can prevent the pressing from collapsing, which is beneficial to improve the user's experience.

[0058] Figure 3 A structural diagram of a pressure touchpad assembly provided in an embodiment of the present application is shown in FIG. 2. Please refer to FIG. 2. Figure 3 The embodiment further provides a pressure touchpad assembly, which comprises the touchpad 100 and a module fixing support 200, and the touchpad 100 is mounted on the module fixing support 200 in the first direction Z. The touchpad 100 is fixedly connected with the module fixing support 200 through the non-reinforced area 112 of the pressure sensor support 110. The non-reinforced area 112 in the touchpad 100 can be connected and fixed with the module fixing support 200 through screws or other fasteners; the module fixing support 200 can be a part of the shell of an electronic device, for example, a D-shell of an electronic device, which is used to fixedly connect the touchpad 100 to the electronic device, so as to provide support for the touchpad 100 and limit the amount of subsidence deformation of the pressure touchpad 100 after being pressed. The module fixing support 200 can further comprise a module support support 230, which can be connected to the side of the module fixing support 200 away from the pressure touchpad module 100 through screws or other fasteners, so as to improve the support force provided by the module fixing support 200 and further limit the amount of subsidence deformation of the touchpad 100 after being pressed, thereby improving the user's experience.

[0059] Figure 4 A structural diagram of the module fixing support 200 provided in an embodiment of the present application is shown in FIG. 3. Please refer to FIG. 3. Figure 4The limiting protrusion 210 is arranged on the side of the module fixing support 200 facing the pressure sensor support 110, and the thickness of the limiting protrusion 210 is less than the thickness of the elastic gasket 160 in the free state along the first direction Z, so that a gap exists between the module fixing support 200 and the touchpad 100 when the elastic gasket 160 is in the free state, the pressing feeling of the finger in the first direction Z is improved under the condition of ensuring the detection accuracy of the pressure sensor 170, and the distance of the touchpad 100 moving towards the side of the module fixing support 200 is limited due to the existence of the limiting protrusion 210, that is, the sinking depth of the touchpad 100 is limited, so that the distance of the touchpad 100 moving towards the side of the module fixing support 200 is prevented from being too large when the touchpad 100 is pressed, and the user experience is improved.

[0060] In an implementation manner, the limiting protrusion 210 can be arranged close to the outer circumferential side of the module fixing support 200, so that the limiting protrusion 210 can abut against the outer circumferential side of the pressure sensor support 110 to limit the distance of the touchpad 100 moving towards the side of the module fixing support 200 when the finger presses the upper surface of the cover plate 130, and the touchpad 100 is prevented from being pressed and collapsed. Arranging the limiting protrusion 210 close to the outer circumferential side of the module fixing support 200 can also reinforce the strength of the module fixing support 200 itself by using the limiting protrusion 210, and the rigidity of the module fixing support 200 is improved. The rigidity of the module fixing support 200 is improved, so that the deformation amount of the module fixing support 200 after being pressed by the touchpad 100 is reduced, and the distance of the touchpad 100 moving towards the side of the module fixing support 200 is also limited. Meanwhile, the limiting protrusion 210 is arranged on the outer circumferential side of the module fixing support 200, and is far away from the connection between the non-reinforced area 112 and the module fixing support 200, so that the limiting is better.

[0061] In a possible implementation manner, the limiting protrusion 210 of the present embodiment includes a plurality of protruding portions, and adjacent two protruding portions are connected to each other or are arranged at intervals. In a plane perpendicular to the first direction Z, the pattern surrounded by the plurality of protruding portions is similar to the outer contour of the module fixing support 200. Through the above arrangement, the protruding portions are arranged close to each position of the module fixing support 200, so that the distance of the touchpad 100 moving towards the side of the module fixing support 200 is better limited.

[0062] Further, the plurality of protruding portions in the present embodiment include a first protruding portion 211, a second protruding portion 212, a third protruding portion 213 and a fourth protruding portion 214, and the first protruding portion 211, the second protruding portion 212, the third protruding portion 213 and the fourth protruding portion 214 generally surround a cuboid pattern. The first protruding portion 211 and the third protruding portion 213 extend along the second direction Y, and the second protruding portion 212 and the fourth protruding portion 214 extend along the third direction X.

[0063] In combination with the drawings, it can be understood that the first protruding part 211, the second protruding part 212 and the third protruding part 213 are sequentially connected end to end in the embodiment, and the first protruding part 211, the second protruding part 212 and the third protruding part 213 form a pattern similar to a "door frame"; the fourth protruding part 214 is arranged in a spaced manner with the first protruding part 211 and the third protruding part 213, wherein the spaced manner refers to a non-connected state between the fourth protruding part 214 and the first protruding part 211 and between the fourth protruding part 214 and the third protruding part 213.

[0064] In some embodiments, along the first direction Z, the thickness of the limiting protrusion 210 in the embodiment is 0.25-0.35 mm. That is, by the limiting protrusion 210, it can be ensured that there is a gap of at least 0.25-0.35 mm between the touchpad 100 and the module fixing support 200, and under the condition of ensuring the detection accuracy of the pressure sensor 170, the distance of the touchpad 100 moving to the side of the module fixing support 200 is prevented from being too large when the finger presses the touchpad 100, thereby preventing the touchpad 100 from collapsing.

[0065] In an implementation manner, the module fixing support 200 in the embodiment is provided with a plurality of first connecting holes 201 for fixedly connecting the touchpad 100 to the module fixing support 200; the plurality of first connecting holes 201 and the plurality of non-reinforced region fixing holes 1120 of the non-reinforced region 112 are in one-to-one correspondence, and a fastener is fixed in the corresponding non-reinforced region fixing hole 1120 after passing through the first connecting hole 201. In the embodiment, the specific number of the non-reinforced region fixing hole 1120 and the first connecting hole 201 can be set according to actual needs, for example, eight non-reinforced region fixing holes 1120 and eight first connecting holes 201 can be set, and the fastener can be a fastening screw, which is used to connect and fix the corresponding non-reinforced region fixing hole 1120 and the first connecting hole 201, thereby improving the fixing stability of the touchpad 100 on the module fixing support 200.

[0066] The module fixing support 200 in the embodiment is provided with a limiting groove corresponding to the cantilever beam; the limiting groove is located in the range enclosed by the first protruding part 211, the second protruding part 212, the third protruding part 213 and the fourth protruding part 214. Through the above arrangement, the main body region of the module fixing support 200 does not have an opening, thereby being beneficial to improving the strength of the module fixing support 200.

[0067] Specifically, the limiting grooves of the present embodiment include a first limiting groove 221 arranged near the junction of the first protruding portion 211 and the second protruding portion 212 of the limiting protrusion 210, a second limiting groove 222 arranged between the first protruding portion 211 and the fourth protruding portion 214, a third limiting groove 223 arranged near the junction of the second protruding portion 212 and the third protruding portion 213, and a fourth limiting groove 224 arranged between the third protruding portion 213 and the fourth protruding portion 214. In the first direction Z, the first limiting groove 221 coincides with the free end of the first cantilever beam 11213, the second limiting groove 222 coincides with the free end of the second cantilever beam 11214, the third limiting groove 223 coincides with the free end of the third cantilever beam 11223, and the fourth limiting groove 224 coincides with the free end of the fourth cantilever beam 11224. Through the above arrangement, the first limiting groove 221, the second limiting groove 222, the third limiting groove 223, and the fourth limiting groove 224 can be used to limit the first cantilever beam 11213, the second cantilever beam 11214, the third cantilever beam 11223, and the fourth cantilever beam 11224, respectively, thereby preventing the cantilever beams from moving too far toward the side of the module fixing support 200 when the pressing panel is pressed.

[0068] In an implementation manner, the module fixing support 200 further includes a module support support 230, which is arranged on the side of the module fixing support 200 away from the pressure touch panel 100 and at one end of the module fixing support 200. For example, as shown in FIG. 6, the module support support 230 extends generally along the third direction X, and the module support support 230 is arranged at one end of the module fixing support 200 along the second direction Y. The module support support 230 can improve the support strength of the module fixing support 200 and facilitate to improve the rigidity of the module fixing support 200 locally. Figure 3

[0069] In the present embodiment, the module support support 230 and other parts of the module fixing support 200 can be integrally formed, thereby further improving the rigidity of the module fixing support 200. The module support support 230 and the module fixing support 200 can be integrally processed by, for example, die casting or computer numerical control precision machining. Integrally forming the module support support 230 and other parts of the module fixing support 200 can also eliminate the fasteners used to connect the two in related technologies, thereby facilitating to reduce the number of fasteners.

[0070] Further, in the present embodiment, the module fixing support 200 is a hard aluminum support or a super-hard aluminum support, and the module support support 230 is a hard aluminum support. By selecting hard aluminum or super-hard aluminum materials, the strength of the module fixing support 200 and the module support support 230 can be improved.

[0071] ​In summary, the embodiment limits the distance of the pressure touchpad moving towards the side of the module fixing support 200, i.e. limits the depth of the pressure touchpad 100 sinking, prevents the distance of the pressure touchpad 100 moving towards the side of the module fixing support 200 from being too large when the pressure touchpad is pressed, and is beneficial to improve the user experience and prevent the touchpad from being pressed and sinking. By improving the structure of the module fixing support 200 and the material of the module fixing support 200, the rigidity of the module fixing support 200 is improved, the deformation amount generated when being pressed is reduced, and the sinking deformation amount of the pressure touchpad after being pressed is further reduced.

[0072] In an embodiment, referring to Figure 4 and Figure 5 The module fixing support 200 of the embodiment can further include a plurality of mounting portions 240, the plurality of mounting portions 240 are located on the outer circumferential side of the limiting protrusion 210, and the mounting portion 240 is connected and fixed with the part of the C shell 10 close to the mounting port 11. Optionally, the part of the C shell 10 close to the mounting port 11 is provided with a plurality of shell fixing holes 12, each mounting portion 240 is provided with at least one second connecting hole 241, and the fastener is fixed in the corresponding shell fixing hole 12 after passing through the second connecting hole 241. Through the above-mentioned manner, the fixed connection of the module fixing support 200 and the C shell 10 is realized.

[0073] The pressure touchpad 100 is fixed on the module fixing support 200, and the cover plate 130 in the pressure touchpad 100 is pressed to enable the touchpad 100 to move in the first direction Z relative to the module fixing support 200. Since the limiting protrusion 210 is arranged on the module fixing support 200, the distance of the cover plate 130 moving towards the side of the module fixing support 200 is limited, i.e. the depth of the touchpad 100 sinking is limited, thereby preventing the distance of the pressure touchpad moving towards the side of the module fixing support 200 from being too large when the touchpad 100 is pressed, and being beneficial to improve the user experience.

[0074] Figure 5 The structure diagram of the electronic device provided by an embodiment of the present application is provided. Referring to Figure 5 The embodiment further provides an electronic device including a C shell 10, and the C shell 10 is provided with a mounting port 11, and the mounting port 11 is provided with the pressure touchpad assembly as above.

[0075] The present application further provides a touchpad of another embodiment. Referring to Figures 6-7 as shown, Figure 6 It is an exploded view of the pressure touchpad module; Figure 7A structural diagram of the pressure sensor support is shown. The pressure touchpad 300 includes a cover plate 330, a printed circuit board 320, a pressure sensor 370 and a pressure sensor support 310 arranged in sequence along a first direction Z. The printed circuit board 320 is fixedly connected with the cover plate 330 through a first adhesive layer 340. The pressure sensor support 310 is provided with a reinforced area 311, a non-reinforced area 312 and a flexible arm 313. The non-reinforced area 312 is located at the outer peripheral side of the pressure sensor support 310, and the reinforced area 311 is located at the middle of the pressure sensor support 310 and surrounded by the non-reinforced area 312. The flexible arm 313 connects the reinforced area 311 and the non-reinforced area 312. The non-reinforced area 312 is fixedly connected with an external housing, for example, the external housing includes a module fixing support, and the reinforced area 311 is fixedly connected with the printed circuit board 320 through a second adhesive layer 350.

[0076] The non-reinforced area 312 is further provided with a plurality of cantilever beams 3121, for example, four cantilever beams 3121 are provided in the embodiment. The non-reinforced area 312 is generally cuboid-shaped, and the four cantilever beams 3121 extend towards the inner side of the pressure sensor support 310 and are respectively arranged close to the four corners of the pressure sensor support 310. The cantilever beams 3121 are connected with the printed circuit board through elastic washers 360.

[0077] Through the above arrangement, the pressure sensor support 310 of the embodiment can be fixedly connected with the printed circuit board 320 through the reinforced area 311, fixedly connected with the external housing through the non-reinforced area 312, and connected with the reinforced area 311 and the non-reinforced area 312 through the flexible arm 313, so that the pressure sensor support 310 has good rigidity and strength, reduces the amount of sinking of the pressure touchpad when the finger is pressed, and is beneficial to improving the user experience. Compared with the previous embodiment, the touchpad 300 is prevented from collapsing to a certain extent.

[0078] Figure 8 A structural diagram of a pressure touchpad assembly provided by an embodiment of the application is shown. Please refer to Figure 8 The pressure touchpad assembly includes a pressure touchpad 300, a module fixing support 400 and a module support support 430. Along the first direction Z, the pressure touchpad 300 is mounted on the module fixing support 400, and the module support support 430 is mounted on the side of the module fixing support 400 away from the pressure touchpad 300. The non-reinforced area 312 in the pressure touchpad 300 can be connected and fixed with the module fixing support 400 through screws or other fasteners. The module fixing support 400 is connected to an electronic device as a housing of the electronic device, thereby providing support for the pressure touchpad 300. The module support support 430 can be connected on the side of the module fixing support 400 away from the pressure touchpad 300 through screws or other fasteners, so as to improve the support force that can be provided by the module fixing support 400.

[0079] In the embodiment, the module fixing support 400 and the module support support 430 can further limit the amount of deformation of the pressure touch plate after being pressed, thereby improving the user experience.

[0080] Figure 9 A structural diagram of an electronic device is provided in an embodiment of the present application. Please refer to Figure 9 The embodiment also provides an electronic device, which comprises a C shell 30, the C shell 30 is provided with a mounting port 31, and the mounting port 31 is provided with the pressure touch plate assembly in the above embodiment.

[0081] Specifically, the module fixing support 400 can be connected and fixed with the C shell 30 through screws or other fasteners, and the pressure touch plate 300 and the module support support 430 are respectively fixed to the module fixing support 400 from both sides of the first direction Z.

[0082] The electronic device of the embodiment has the pressure touch plate assembly in the above embodiment, so that the amount of deformation of the pressure touch plate after being pressed is small, thereby improving the user experience.

[0083] Specifically, the electronic device of the embodiment can be a terminal device, a mobile phone, a tablet computer and its accessory keyboard, a notebook computer, a desktop computer, a game device, a vehicle-mounted electronic device or a wearable smart device, etc. portable or mobile computing device, and other electronic devices such as electronic databases, cars, and automated teller machines (ATM). The wearable smart device includes a device with full functions, large size, and can realize complete or partial functions without relying on a smart phone, such as a smart watch or smart glasses, etc., and a device that only focuses on a certain type of application function and needs to be used with other devices such as a smart phone, such as various smart bracelets, smart jewelry, etc.

[0084] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0085] In the present application, unless specifically defined otherwise, the terms "mounting", "connection", "connecting", "fixed", and like terms should be construed in a broad sense and, for example, can be fixed connection, detachable connection, or integral; can be direct connection, or indirect connection through an intermediate medium; can be internal connection of two elements, or interaction relationship between two elements. For those skilled in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0086] It should be noted that in the description of the present application, the terms "first", "second" are only used for the convenience of describing different parts, and cannot be understood as indicating or implying the order relationship, relative importance, or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features.

[0087] The embodiments or implementations in the present application are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other.

[0088] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "illustrative embodiment", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0089] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A pressure-sensitive touchpad, characterized in that, include: A printed circuit board is stacked on a pressure sensor bracket along a first direction, wherein the first direction is perpendicular to the plane of the pressure touch panel; A pressure sensor is disposed between the printed circuit board and the pressure sensor bracket; The pressure sensor bracket is used to support the printed circuit board and the pressure sensor, and to fix the pressure touch panel to the outer housing; The pressure sensor bracket includes a reinforcing area, a non-reinforcing area, and a flexible arm. In a plane perpendicular to the first direction, the projection of the reinforcing area is a closed structure, and the reinforcing area surrounds the outside of the non-reinforcing area. The reinforcing area is fixedly connected to the printed circuit board, the non-reinforcing area is fixedly connected to the outer housing, and the flexible arm connects the reinforcing area and the non-reinforcing area. The flexible arm includes a first flexible arm and a second flexible arm, wherein the first flexible arm is a structure formed by rotating the second flexible arm by 180 degrees.

2. The pressure touch panel according to claim 1, characterized in that, The non-reinforced area is provided with multiple cantilever beams, and the multiple cantilever beams and the printed circuit board are connected by elastic gaskets.

3. The pressure touch panel according to claim 2, characterized in that, The elastic pad is a pad or silicone pad with elasticity and stretchability.

4. The pressure touch panel according to claim 1, characterized in that, The non-reinforced area is provided with a plurality of non-reinforced area fixing holes, each of which corresponds to a fastener. The fastener is used to fix the non-reinforced area and the outer housing.

5. The pressure touch panel according to claim 1, characterized in that, The pressure touchpad also includes: An actuator, comprising a linear motor, wherein an actuator clearance hole is provided at the center of the pressure sensor bracket for circumventing the actuator; A cover plate is stacked along the first direction on the side of the printed circuit board away from the pressure sensor bracket. The cover plate and the printed circuit board are bonded and fixed together by a first adhesive layer, and the printed circuit board and the reinforcing area are bonded and fixed together by a second adhesive layer.

6. The pressure touch panel according to claim 5, characterized in that, The first adhesive layer or the second adhesive layer is a low-temperature thermosetting adhesive layer.

7. The pressure touch panel according to claim 1, characterized in that, The pressure sensor bracket is a stainless steel bracket with a hardness of 3 / 4.

8. A pressure touchpad assembly, characterized in that, Includes a pressure touch panel and a module mounting bracket as described in any one of claims 1-7, wherein the pressure touch panel is mounted on the module mounting bracket along a first direction, wherein the first direction is a direction perpendicular to the plane of the pressure touch panel.

9. The pressure touchpad assembly according to claim 8, characterized in that, The module fixing bracket has a limiting protrusion on the side facing the pressure sensor bracket. Along the first direction, the thickness of the limiting protrusion is less than the thickness of the elastic gasket in its free state, or along the first direction, the thickness of the limiting protrusion is 0.25-0.35 mm; and The limiting protrusion is located on the outer periphery of the module fixing bracket.

10. An electronic device, characterized in that, It includes a C-shell, on which a mounting port is provided, and the pressure touch panel assembly as described in claim 9 is provided inside the mounting port.

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