Press detection apparatus and electronic device

Abstract

Provided in the embodiments of the present application are a press detection apparatus and an electronic device. The apparatus comprises: a circuit board, a support and a sensor, wherein the support comprises elastic arms and a support main body that are connected to each other, and the support main body is fixed on a housing of an electronic device; when the press detection apparatus has received a press operation, the circuit board drives the elastic arms to generate elastic deformation, so that the relative distance between the support main body and the circuit board changes; the sensor is used for generating a press signal when the relative distance between the support main body and the circuit board changes; and the circuit board is used for transmitting the press signal to a control unit, and causing the control unit to identify the press operation on the basis of the press signal. The press detection apparatus provided in the embodiments of the present application can perform full-area press detection, and thus a user can perform a press operation at any position, and the user experience can be improved.

Description

Pressing detection device and electronic device TECHNICAL FIELD

[0001] Embodiments of the present application relate to the technical field of electrical engineering, and particularly relate to a pressing detection device and an electronic device. BACKGROUND

[0002] The touchpad is a flat plate arranged on the C shell of a notebook computer. The touchpad on the notebook computer can identify touch instructions and pressing instructions. When a user's finger slides on the touch area of the touchpad, the cursor in the notebook computer can be moved. When the user's finger is pressed on the touchpad, the touchpad can identify the pressing instructions to make the notebook computer perform corresponding operations.

[0003] The existing touchpad adopts a mechanical pressing structure in a half-area pressing mode or a separate key mode to identify pressing instructions.

[0004] However, the separate key mode occupies the touch area of the touchpad, reduces the area of the touch area, and the half-area pressing mode needs to be pressed at a specific position to identify the pressing instructions. Therefore, the existing touchpad has poor user experience.

[0005] SUMMARY

[0006] Therefore, embodiments of the present application provide a pressing detection device and an electronic device to at least partially solve the above problems.

[0007] According to a first aspect of embodiments of the present application, a pressing detection device applied to an electronic device is provided, which comprises a circuit board, a bracket and a sensor. The bracket comprises an elastic arm and a bracket body connected with each other, and the bracket body is fixed to the shell of the electronic device. When the pressing detection device receives a pressing operation, the circuit board drives the elastic arm to produce elastic deformation, so that the relative distance between the bracket body and the circuit board changes. The sensor is configured to generate a pressing signal when the relative distance between the bracket body and the circuit board changes. The circuit board is configured to transmit the pressing signal to a control unit, and make the control unit identify the pressing operation according to the pressing signal.

[0008] According to a second aspect of embodiments of the present application, an electronic device is provided, which comprises a shell and the pressing detection device of the first aspect of embodiments of the present application. The bracket body in the pressing detection device is fixed to the shell.

[0009] According to the pressing detection device provided in the embodiment of the present application, when the pressing detection device receives a pressing operation, the circuit board drives the elastic arm to produce elastic deformation, so that the relative distance between the circuit board and the support body changes, and the sensor can generate a pressing signal when the relative distance between the circuit board and the support body changes. Thus, the pressing signal can be transmitted to the control unit through the circuit board, so that the pressing operation of the user can be recognized. Since no physical button is arranged, compared with the touchpad in the prior art in the form of a single button, the area of the touch area is larger. Since the pressing position is not limited, the pressing signal can be generated when the pressing detection device receives the pressing operation. Thus, compared with the touchpad in the prior art in the form of a half-area pressing, the user can press anywhere without pressing at a specific position, so that the user experience is improved. Since the sensor generates the pressing signal according to the change of the relative distance between the circuit board and the support body, compared with the scheme for detecting pressure through a strain gauge in the prior art, the service life of the sensor is higher since the sensor does not need to produce deformation. BRIEF DESCRIPTION OF DRAWINGS

[0010] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments described in the embodiments of the present application, and other drawings can also be obtained by those skilled in the art according to these drawings.

[0011] FIG. 1 is a schematic diagram of a touchpad in the form of a single button provided in an embodiment of the present application;

[0012] FIG. 2 is a schematic diagram of a pressing detection device provided in an embodiment of the present application;

[0013] FIG. 3 is a schematic diagram of a use scenario of a pressing detection device provided in an embodiment of the present application;

[0014] FIG. 4 is a schematic diagram of a support structure provided in an embodiment of the present application;

[0015] FIG. 5 is a schematic diagram of another support structure provided in an embodiment of the present application;

[0016] FIG. 6 is an exploded view of a pressing detection device provided in an embodiment of the present application;

[0017] FIG. 7 is a schematic diagram of another pressing detection device provided in an embodiment of the present application;

[0018] FIG. 8 is a top view of a pressing detection device including an induction coil provided in an embodiment of the present application;

[0019] FIG. 9 is a schematic diagram of another pressing detection device according to an embodiment of the present application;

[0020] FIG. 10 is a schematic diagram of a positional relationship between a support and a circuit board according to an embodiment of the present application;

[0021] FIG. 11 is a schematic diagram of another support structure according to an embodiment of the present application;

[0022] FIG. 12 is a sectional view of an electronic device according to an embodiment of the present application. DETAILED DESCRIPTION

[0023] In order to make personnel in the art better understand the technical solutions in the embodiments of the present application, the technical solutions in the embodiments of the present application will be described clearly and in detail below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art should belong to the scope of protection of the embodiments of the present application.

[0024] As described above, the touchpad is a flat plate arranged on the shell of a notebook computer C. The touchpad on the notebook computer can identify touch instructions and pressing instructions. When a user's finger slides on the touch area of the touchpad, the cursor in the notebook computer can be moved. When the user's finger presses on the touchpad, the touchpad can identify the pressing instructions to make the notebook computer perform corresponding operations. The existing touchpad uses a mechanical pressing structure in a half-area pressing mode or a separate key mode to identify the pressing instructions. For example, FIG. 1 is a schematic diagram of a touchpad in a separate key mode according to an embodiment of the present application. As shown in FIG. 1, the touchpad in the separate key mode includes two keys. A user inputs pressing instructions through the two keys. Specifically, the left key 102 can simulate the left key of a mouse, and the right key 103 can simulate the right key of a mouse. However, the separate key mode occupies the area of the non-touch area 101 of the touchpad, which reduces the area of the touch area 101. In addition, the half-area pressing mode needs to be pressed at a specific position to identify the pressing instructions. For example, the half-area pressing mode needs to be pressed at the lower left corner to simulate the left key of a mouse and needs to be pressed at the lower right corner to simulate the right key of a mouse. Therefore, the existing touchpad has poor user experience.

[0025] The embodiment of the present application provides a pressing detection device, the pressing detection device comprises: a circuit board, a support and a sensor, when the pressing detection device receives a pressing operation, the circuit board drives the elastic arm to produce elastic deformation, the relative distance between the circuit board and the support body changes, the sensor can produce a pressing signal when the relative distance between the circuit board and the support body changes, thereby the pressing signal can be transmitted to a control unit through the circuit board, the recognition of the user pressing operation is realized, since no physical button is arranged, compared with the touchpad in the prior art in the form of a single button, the area of the touch area is larger, since the pressing position is not limited, the pressing signal can be produced when the pressing detection device receives the pressing operation, therefore compared with the touchpad in the prior art in the form of a half-area pressing, the user can press anywhere, without pressing at a specific position, the user experience is improved, and since the sensor produces the pressing signal according to the change of the relative distance between the circuit board and the support body, compared with the scheme for detecting pressure through a strain gauge in the prior art, since the sensor does not need to produce deformation, the service life of the sensor is higher.

[0026] The pressing detection device provided by the present application is described below through examples.

[0027] Fig. 2 is a schematic diagram of a pressing detection device provided by the embodiment of the present application, the pressing detection device is applied to an electronic device, as shown in Fig. 2, the pressing detection device comprises: a circuit board 202, a support and a sensor 204, the support comprises an elastic arm 2032 and a support body 2031 connected with each other, the support body 2031 is fixed on the shell 301 of the electronic device, when the pressing detection device receives a pressing operation, the circuit board 202 drives the elastic arm 2032 to produce elastic deformation, the relative distance between the support body 2031 and the circuit board 202 changes, the sensor 204 can produce a pressing signal when the relative distance between the support body 2031 and the circuit board 202 changes, the circuit board 202 can transmit the pressing signal to a control unit, and the control unit can recognize the pressing operation according to the pressing signal.

[0028] The support comprises the elastic arm 2032 and the support body 2031 arranged integrally, and the support body 2031 is fixed on the shell 301 of the electronic device. In an example, the support can be a metal material, including but not limited to stainless steel, aluminum alloy, magnesium alloy and the like, the support body 2031 and the elastic arm 2032 can be obtained by stamping a plate of the metal material, in another example, the support can be a plastic material or a plastic material support, and the support body 2031 can be fixed on the shell 301 of the electronic device by means of bolts, clamping or the like, and the specific fixing method is not limited herein.

[0029] When the pressing detection apparatus receives a pressing operation, for example, a user presses with a finger, the circuit board 202 is displaced in the direction of the pressure, and the elastic arm 2032 is elastically deformed in the direction of the pressure. At this time, since the support body 2031 is fixed to the shell 301 of the electronic device, the support body 2031 does not move, and the circuit board 202 is displaced relative to the support body 2031, the relative distance between the circuit board 202 and the support body 2031 changes, and the sensor 204 generates a pressing signal. After the circuit board 202 receives the pressing signal sent by the sensor 204, the circuit board 202 transmits the pressing signal to the control unit. The control unit can identify the pressing signal and perform a pressing operation according to the pressing signal. In an example, the control unit can be a pressing detection chip arranged on the circuit board 202, a touch chip arranged on the circuit board 202, or a processor of the electronic device.

[0030] The sensor 204 can include at least one sensor 204. When the sensor 204 is one, the sensor 204 can be arranged at the middle part of the circuit board 202. When the sensor 204 is multiple, the sensors 204 can be uniformly distributed around the circuit board 202. The specific number of the sensors 204 is not limited herein. In an example, four sensors 204 can be distributed at the four corners of the circuit board 202.

[0031] In the embodiments of the present application, the pressing detection apparatus includes the circuit board 202, the support, and the sensor 204. When the pressing detection apparatus receives a pressing operation, the circuit board 202 drives the elastic arm 2032 to elastically deform, so that the relative distance between the circuit board 202 and the support body 2031 changes. The sensor 204 can generate a pressing signal when the relative distance between the circuit board 202 and the support body 2031 changes. Thus, the pressing signal can be transmitted to the control unit through the circuit board 202, and the user's pressing operation can be identified. Since no physical button is arranged, the area of the touch area is larger than that of the touch pad with a single button in the prior art. Since the pressing position is not limited, the pressing signal can be generated when the pressing detection apparatus receives a pressing operation. Thus, the user can press anywhere without pressing at a specific position, which improves the user experience. Since the sensor 204 generates a pressing signal according to the change of the relative distance between the circuit board 202 and the support body 2031, the service life of the sensor 204 is higher than that of the sensor 204 in the prior art which detects pressure through a strain gauge.

[0032] In a possible implementation, the first end of the elastic arm 2032 is connected with the support body 2031, the second end of the elastic arm 2032 is suspended, and the circuit board 202 is bonded with the elastic arm 2032. When the press detection apparatus receives a press operation, the circuit board 202 drives the elastic arm 2032 to move relative to the support body 2031, so that the elastic arm 2032 is elastically deformed.

[0033] As shown in FIG. 2, the first end of the elastic arm 2032 is connected with the support body 2031, the second end of the elastic arm 2032 is suspended, and the elastic arm 2032 is bonded with the circuit board 202. In an example, the elastic arm 2032 can be bonded with the circuit board 202 through the silica gel pad 402. Specifically, the upper surface and the lower surface of the silica gel pad 402 can be coated with glue, and then the upper surface and the lower surface of the silica gel pad 402 are bonded with the circuit board 202 and the elastic arm 2032 respectively.

[0034] FIG. 3 is a schematic diagram of a use scenario of the press detection apparatus according to an embodiment of the present application. As shown in FIG. 3, when the finger 500 presses the press detection apparatus, the circuit board 202 moves in the direction of the pressure, and the circuit board 202 drives the elastic arm 2032 to move relative to the support body 2031. For example, the elastic arm 2032 moves downward relative to the support body 2031 in FIG. 3, so that the distance between the circuit board 202 and the support body 2031 changes. For example, the distance between the circuit board 202 and the support body 2031 in FIG. 3 becomes smaller. The sensor 204 generates a press signal. It should be understood that one end of the elastic arm 2032 is connected with the support body 2031, and the second end is suspended. Therefore, the second end is elastically deformed under the drive of the circuit board 202.

[0035] Since the elastic arm 2032 is elastically deformed, when the press detection apparatus stops being pressed, the elastic arm 2032 can rebound to drive the circuit board 202 to move relative to the support body 2031, so that the relative distance between the support body 2031 and the circuit board 202 returns to the relative distance before the press detection apparatus is pressed, and the sensor 204 stops generating the press signal.

[0036] In the embodiment of the present application, the first end of the elastic arm 2032 is connected with the support body 2031, and the second end of the elastic arm 2032 is suspended. In this way, the connection between the elastic arm 2032 and the support body 2031 is realized. Since the elastic arm 2032 is bonded with the circuit board 202, and the support body 2031 is fixed on the shell 301 of the electronic device, when the press detection apparatus receives a press operation, the circuit board 202 drives the elastic arm 2032 to move relative to the support body 2031, so that the elastic arm 2032 is elastically deformed, and the relative distance between the circuit board 202 and the support body 2031 changes. In this way, the sensor 204 can generate a press signal, and the generation of the press signal is realized.

[0037] FIG. 4 is a schematic diagram of a support structure according to an embodiment of the present application. As shown in FIG. 4, the support body 2031 is provided with a first through hole 2033, and the first end of the elastic arm 2032 is connected to the support body 2031, and the elastic arm 2032 extends into the first through hole 2033.

[0038] The first end of the elastic arm 2032 is connected to the support body 2031, for example, as shown in the scheme of FIG. 4, the first end of the elastic arm 2032 can be connected to the inner edge of the first through hole 2033 provided in the support body 2031, so that the first end of the elastic arm 2032 is connected to the support body 2031, and the second end of the elastic arm 2032 extends into the first through hole 2033 to form the elastic arm 2032. In an example, the support body 2031 and the elastic arm 2032 extending into the first through hole 2033 can be obtained by punching on a metal plate, and the part except the elastic arm 2032 is punched off.

[0039] It should be understood that the scheme in which four elastic arms 2032 are distributed at the four corner positions of the support body 2031 is shown in FIG. 4. In an example, the elastic arm 2032 can be more than four, and the plurality of elastic arms 2032 can be uniformly distributed on the support body 2031. The specific number of elastic arms 2032 can be set as required, which is not limited herein.

[0040] In the embodiments of the present application, the support body 2031 is provided with the first through hole 2033, the first end of the elastic arm 2032 is connected to the support body 2031, and the elastic arm 2032 extends into the first through hole 2033. Thus, the elastic arm 2032 can be formed on the support body 2031. Since the elastic arm 2032 is arranged in the first through hole 2033 on the support body 2031, the elastic arm 2032 extends outward relative to the support body 2031. Since the first through hole 2033 exists, the weight of the support body 2031 can be reduced, thereby reducing the overall weight of the pressing detection device, so that the pressing detection device can be applied to electronic devices with higher requirements for lightness and thinness.

[0041] In a possible implementation, the plurality of elastic arms 2032 extend into the same first through hole 2033, or the support body 2031 is provided with a plurality of first through holes 2033, and one elastic arm 2032 extends into each first through hole 2033.

[0042] As shown in FIG. 4, the scheme in which a plurality of elastic arms 2032 extend into the first through hole 2033 is shown in FIG. 4. FIG. 5 is a schematic diagram of another support structure according to an embodiment of the present application. As shown in FIG. 5, the scheme in which the support body 2031 is provided with a plurality of first through holes 2033, and one elastic arm 2032 extends into each first through hole 2033 is shown in FIG. 5.

[0043] It should be understood that FIG. 5 is only an example, specifically, the area of the first through hole 2033 can be set as needed, for example, in order to reduce the weight of the support as a whole, the first through hole 2033 can be larger in area, or in order to increase the strength of the support, the first through hole 2033 can be set smaller, and the like, and the specific area of the first through hole 2033 is not limited herein.

[0044] It should be noted that since the elastic arm 2032 needs to produce elastic deformation, as shown in FIGS. 4 and 5, the elastic arm 2032 is only connected to the support body 2031 at the first end, and the second end is suspended, that is, the structure of the elastic arm 2032 except the first end is not connected to the support body 2031, at this time, the part connected to the support body 2031 at the first end serves as the fulcrum of the elastic deformation of the support.

[0045] In the embodiment of the present application, the plurality of elastic arms 2032 extend into the same first through hole 2033, or the support body 2031 is provided with a plurality of first through holes 2033, and one elastic arm 2032 extends into each first through hole 2033, thereby being applicable to sensors 204 with different requirements for support structure, and also applicable to different use scenarios (a scenario with higher requirements for support strength can use a support scheme in which the support body 2031 is provided with a plurality of first through holes 2033, and one elastic arm 2032 extends into each first through hole 2033, and a scenario with higher requirements for thinness can use a support scheme in which a plurality of elastic arms 2032 extend into the same first through hole 2033), so the applicability of the pressing detection device is higher.

[0046] In a possible implementation, the elastic arm 2032 includes a deformation portion parallel to the support body 2031, and a bending portion connecting the deformation portion and the support body 2031, and the included angle between the bending portion and the support body 2031 is greater than zero degrees.

[0047] The deformation portion and the bending portion of the elastic arm 2032 are an integral structure, and the deformation portion can be connected to the support body 2041 through the bending portion, it should be understood that when the included angle between the bending portion and the support body 2031 is equal to 0 degrees, at this time, the elastic arm 2032 is parallel to the support body 2031 as a whole, that is, it is equivalent to not bending the elastic arm 2032, therefore, the included angle between the bending portion and the support body 2031 needs to be greater than 0 degrees. In an example, the bending portion of the elastic arm 2032 can be obtained by stamping and bending the support body 2031.

[0048] In the embodiment of the present application, the elastic arm 2032 includes a deformation portion parallel to the support body 2031, and a bending portion connecting the deformation portion and the support body 2031, so that when the pressing detection device receives a pressing operation, the deformation portion elastically deforms through the bending portion as a fulcrum. Since the elastic arm 2032 is provided with the deformation portion and the bending portion, the force required for the user to press the pressing detection device to make the deformation portion elastically deform is smaller compared with the support structure scheme including only the deformation portion, and thus the user experience can be improved.

[0049] In a possible implementation, as shown in FIG. 2, the sensor 204 includes an upper electrode 2041 and a lower electrode 2042. The upper electrode 2041 is bonded to the circuit board 202, or the upper electrode 2041 is arranged in the circuit board 202. The lower electrode 2042 is arranged on the support body 2031, and the upper electrode 2041 and the lower electrode 2042 are oppositely arranged in a direction perpendicular to the circuit board 202. When the relative distance between the support body 2031 and the circuit board 202 changes, the relative distance between the upper electrode 2041 and the lower electrode 2042 changes, so that the capacitance of the sensor 204 changes to generate a pressing signal.

[0050] The sensor 204 includes an upper electrode 2041 and a lower electrode 2042. The upper electrode 2041 can be integrated in the circuit board 202 or bonded to one side of the circuit board 202 close to the support. The lower electrode 2042 is arranged on the support body 2031. Both the upper electrode 2041 and the lower electrode 2042 are metal electrodes, and both the upper electrode 2041 and the lower electrode 2042 are electrically connected to the circuit board 202. In an example, the surface of the upper electrode 2041 can be coated with an insulating layer to prevent the upper electrode 2041 from contacting the lower electrode 2042. The upper electrode 2041 and the lower electrode 2042 are oppositely arranged in a direction perpendicular to the circuit board 202, that is, the projection of the lower electrode 2042 on the circuit board 202 intersects with the projection of the upper electrode 2041 on the circuit board 202 in the direction perpendicular to the circuit board 202.

[0051] When the relative distance between the circuit board 202 and the support body 2031 changes, the relative distance between the upper electrode 2041 arranged on the circuit board 202 and the lower electrode 2042 arranged on the support body 2031 changes. At this time, the capacitance between the upper electrode 2041 and the lower electrode 2042 changes, that is, the capacitance of the sensor 204 changes, and the sensor 204 generates a pressing signal. For example, due to the change of the capacitance between the upper electrode 2041 and the lower electrode 2042, the level signal output by the sensor 204 to the circuit board 202 changes.

[0052] Optionally, when the pressing detection device receives the pressing operation, the relative distance between the upper electrode 2041 and the lower electrode 2042 changes, which causes the capacitance of the sensor 204 to change, and thus the sensor 204 generates a pressing signal. When the relative distance between the upper electrode 2041 and the lower electrode 2042 changes by different amounts, the capacitance of the sensor 204 changes by different amounts, and thus the signal strength of the generated pressing signal is different (for example, when the pressing signal is a current signal, the current changes by different amounts; when the pressing signal is a voltage signal, the voltage changes by different amounts). When the pressing force of the pressing operation is large, the relative distance between the upper electrode 2041 and the lower electrode 2042 changes greatly. Therefore, the signal strength of the pressing signal can be used to determine the amount of change of the relative distance between the upper electrode 2041 and the lower electrode 2042, and thus the pressing force of the pressing operation received by the pressing detection device can be determined. For example, when the signal strength of the pressing signal is large, the pressing force is large; when the signal strength of the pressing signal is small, the pressing force is small. Thus, the pressing operation can be detected in terms of pressure, and the pressure of the pressing operation can be determined.

[0053] It should be noted that one of the upper electrode 2041 and the lower electrode 2042 serves as a driving electrode to receive a driving signal generated by a control unit on the circuit board 202. The control unit can be a touch chip, a pressing detection chip, or the like. The other of the upper electrode 2041 and the lower electrode 2042 serves as a receiving electrode to output a pressing signal to the control unit on the circuit board 202, thereby achieving pressing detection.

[0054] In the embodiment of the present application, the sensor 204 includes the upper electrode 2041 and the lower electrode 2042. The upper electrode 2041 is bonded to the circuit board 202 or is arranged in the circuit board 202. The lower electrode 2042 is arranged on the support body 2031. Thus, when the relative distance between the circuit board 202 and the support body 2031 changes, the relative distance between the upper electrode 2041 and the lower electrode 2042 changes, the capacitance between the first electrode and the second electrode changes, and a pressing signal is generated, thereby achieving generation of the pressing signal. Since the sensor 204 generates the pressing signal according to the change of the relative distance between the electrodes, compared with the strain gauge pressing detection scheme in the prior art, the sensor 204 does not need to deform, and thus has a longer service life. Compared with the strain gauge pressing detection scheme, the capacitance pressing detection scheme has higher sensitivity, and thus the pressing detection device has higher sensitivity for pressing detection.

[0055] In a possible implementation, when the plurality of elastic arms 2032 extend into the same first through hole 2033, the support body 2031 is connected with a plurality of support portions 2034. The support portions 2034 extend into the first through hole 2033, and the lower electrode 2042 is arranged on the support portions 2034.

[0056] As shown in FIG. 4, the support body 2031 can be connected with a plurality of support portions 2034, and the part of the support body 2031 except the support portions 2034 and the elastic arms 2032 can be a hollow structure to form a first through hole 2033. One end of the support portion 2034 is connected with the support body 2031, and the other end of the support portion 2034 extends into the first through hole 2033 and is suspended. In an example, the support portion 2034 can be bent in the same direction as the bending direction of the elastic arm 2032, so that there is a larger gap between the first electrode arranged on the circuit board 202 and the second electrode arranged on the support portion 2034.

[0057] It should be understood that the scheme of four elastic arms 2032 and four support portions 2034 is shown in FIG. 4. In an example, the support body 2031 can include a plurality of elastic arms 2032 and a plurality of support portions 2034. It should be understood that the support portion 2034 is used to support the lower electrode 2042, and thus the number of support portions 2034 can be consistent with the number of sensors 204. In another example, because the elastic portion generates elastic deformation, the relative distance between the circuit board 202 and the support body 2031 changes more greatly at a position closer to the elastic arm 2032. Therefore, the support portion 2034 can be arranged close to the elastic arm 2032, and the number of support portions 2034 can be greater than or equal to the number of elastic arms 2032.

[0058] In the embodiments of the present application, when a plurality of elastic arms 2032 extend into the same first through hole 2033, the support body 2031 is connected with a plurality of support portions 2034, and the lower electrode 2042 is arranged on the support portion 2034. Thus, the area of the first through hole 2033 can be set larger, the weight of the support body as a whole can be reduced, the weight of the pressing detection device can be reduced, and thus the weight of the electronic device can be reduced, which can be suitable for electronic devices with light and thin requirements.

[0059] In a possible implementation, the upper electrode 2041 and the lower electrode 2042 have the same area and shape, and the projection of the lower electrode 2042 on the circuit board 202 coincides with the upper electrode 2041 in a direction perpendicular to the circuit board 202.

[0060] The area and shape of the upper electrode 2041 and the lower electrode 2042 can be the same. The shape of the upper electrode 2041 and the lower electrode 2042 includes, but is not limited to, a square, a circle, a triangle, or a polygon, etc. The center line of the upper electrode 2041 and the lower electrode 2042 is perpendicular to the circuit board 202, that is, the projection of the lower electrode 2042 on the circuit board 202 coincides with the projection of the upper electrode 2041 on the circuit board 202 in a direction perpendicular to the circuit board 202.

[0061] In the embodiment of the present application, the upper electrode 2041 and the lower electrode 2042 have the same area and shape, and the projection of the lower electrode 2042 on the circuit board 202 coincides with the upper electrode 2041 in the direction perpendicular to the circuit board 202, so that the first electrode and the second electrode can be arranged opposite to each other in the direction perpendicular to the circuit board 202, and the same shape and size of the first electrode and the second electrode can save electrode material and reduce cost while generating a larger signal amount.

[0062] In a possible implementation, the area of the upper electrode 2041 is greater than or equal to 20 square millimeters.

[0063] In the embodiment of the present application, the area of the upper electrode 2041 is greater than or equal to 20 square millimeters, so that the signal amount of the press signal generated by the sensor 204 can be ensured to be larger, and the small area of the upper electrode 2041 and the lower electrode 2042 can be prevented from causing the sensor 204 to generate a small signal amount, resulting in missed detection of the user's press operation, and the sensitivity of the press detection can be improved.

[0064] In a possible implementation, the distance between the upper electrode 2041 and the lower electrode 2042 in the direction perpendicular to the circuit board 202 ranges from 0.3 mm to 1.0 mm when the press detection device does not receive a press operation.

[0065] In the embodiment of the present application, the gap between the upper electrode 2041 and the lower electrode 2042 ranges from 0.3 mm to 1.0 mm, so that when the relative position between the circuit board 202 and the support body 2031 changes, the sensor 204 can normally generate a press signal, and when the relative distance between the upper electrode 2041 and the lower electrode 2042 changes due to the large gap between the upper electrode 2041 and the lower electrode 2042, the upper electrode 2041 and the lower electrode 2042 can be prevented from contacting, so that the sensor 204 can normally work.

[0066] In a possible implementation, the lower electrode 2042 is electrically connected to the circuit board 202 through a flexible circuit board 205.

[0067] FIG. 6 is an exploded view of a press detection device according to an embodiment of the present application. As shown in FIG. 6, the elastic arm 2032 is bonded to the circuit board 202 through a silica gel pad 402, the upper electrode 2041 is integrated on the circuit board 202, the lower electrode 2042 is arranged on the support portion 2034, and the lower electrode 2042 is electrically connected to the circuit board 202 through a flexible circuit board 205. It should be noted that only the scheme in which the upper electrode 2041 is integrated on the circuit board 202 is shown in FIG. 6, and the upper electrode 2041 can also be bonded to the circuit board 202, which is not described herein.

[0068] In the embodiment of the present application, the lower electrode 2042 is electrically connected with the circuit board 202 through the flexible circuit board 205, so that the lower electrode 2042 is electrically connected with the circuit board 202, and the lower electrode 2042 is powered. Thus, when the relative distance between the upper electrode 2041 and the lower electrode 2042 changes, the capacitance between the upper electrode 2041 and the lower electrode 2042 changes, and a pressing signal is generated.

[0069] Fig. 7 is a schematic view of another pressing detection device provided by the embodiment of the present application. As shown in Fig. 7, the sensor 204 includes an induction coil 206, which is arranged on the side of the circuit board 202 opposite to the support body 2031, and is electrically connected with the circuit board 202. The circuit board 202 can transmit a driving signal to the induction coil 206, and the induction coil 206 can receive the driving signal and generate a pressing signal when the distance between the induction coil 206 and the support body 2031 changes.

[0070] When there is no pressing, the relative position between the induction coil 206 and the support body 2031 does not change. When the pressing detection device receives a pressing operation, the circuit board 202 drives the elastic arm 2032 to elastically deform. At this time, the relative distance between the circuit board 202 and the support body 2031 changes, that is, the relative position between the induction coil 206 arranged on the circuit board 202 and the support body 2031 changes. Since the circuit board 202 continuously outputs the driving signal to the induction coil 206, the induction coil 206 is in a powered state. When the relative position between the induction coil 206 and the support body 2031 changes, the support body 2031 cuts the magnetic induction lines of the magnetic field generated by the induction coil 206, so that the inductance of the induction coil 206 changes, and a pressing signal is generated.

[0071] It should be noted that, since the scheme uses the change of the distance between the support body 2031 and the induction coil 206 to cause the inductance of the induction coil 206 to change, and generates a pressing signal, the material of the support is preferably a metal material with low resistivity, that is, high conductivity. Because the material with low resistivity can reduce the loss of eddy current between the coil and the support, the material of the support is preferably a metal material such as copper, aluminum, aluminum alloy, nickel or stainless steel. In an example, the support can be made of a non-metal material, but a plate or film made of a metal material with low resistivity or a plated layer needs to be attached to the side of the support opposite to the induction coil 206. The resistivity of the metal material is preferably ≤0.8 uΩ.m.

[0072] Optionally, when the pressing operation is received by the pressing detection device, the relative distance between the inductive coil 206 and the support body 2041 changes, which causes the inductance of the inductive coil 206 to change, and a pressing signal is generated. When the relative distance between the inductive coil 206 and the support body 2041 changes by different amounts, the inductance of the inductive coil 206 changes by different amounts, and the signal strength of the generated pressing signal is different (for example, when the pressing signal is a current signal, the current changes by different amounts, and when the pressing signal is a voltage signal, the voltage changes by different amounts). When the pressing force of the pressing operation is greater, the relative distance between the inductive coil 206 and the support body 2041 changes more greatly. Therefore, the signal strength of the pressing signal can be used to determine the amount of change in the relative distance between the inductive coil 206 and the support body 2041, and thus the pressing force of the pressing operation received by the pressing detection device can be determined. For example, when the strength of the pressing signal is greater, the pressing force is greater, and when the strength of the pressing signal is smaller, the pressing force is smaller. Thus, the pressing operation can be subjected to pressure detection, and the pressure of the pressing operation can be determined.

[0073] In the embodiment of the present application, the sensor 204 includes the inductive coil 206. When the relative position between the inductive coil 206 and the support body 2031 changes, the support body 2031 cuts the magnetic lines of the magnetic field generated by the inductive coil 206, which causes the inductance of the inductive coil 206 to change to generate a pressing signal. Thus, pressing detection can be achieved. Since the pressing signal is generated by the change in the inductance of the inductive coil 206, the lower electrode 2042 does not need to be provided on the support body 2031, which prevents the pressing detection from being unable to be performed due to the lower electrode 2042 being separated from the support body 2031, and improves the reliability of the pressing detection device.

[0074] FIG. 8 is a top view of a pressing detection device including an inductive coil according to an embodiment of the present application. When only one sensor 204 is included, i.e., only one inductive coil 206 is included, the inductive coil can be arranged at the center of the circuit board 202. As shown in FIG. 8, when multiple sensors 204 are included, i.e., multiple inductive coils 206 are included, the multiple inductive coils 206 are arranged close to the first through holes 2033 in a direction parallel to the circuit board 202. Different inductive coils 206 are arranged close to different first through holes 2033.

[0075] As shown in FIG. 8, when the support includes four elastic arms 2032, four inductive coils 206 are arranged close to the first through hole 2033. Since the elastic arm 2032 is arranged in the first through hole 2033, the four inductive coils 206 are arranged close to the four elastic arms 2032, and different inductive coils 206 are arranged close to different first through holes 2033. In an example, the four inductive coils 206 can be arranged at the four corners of the support. When the elastic arm 2032 is elastically deformed, since the relative distance between the position close to the elastic arm 2032 and the support body 2031 changes greatly, arranging the four inductive coils 206 close to the first through hole 2033 can make the relative distance between the inductive coil 206 and the support change greatly when the elastic arm 2032 is deformed, so that the displacement of the support relative to the inductive coil 206 is large. Since the distance between the inductive coil 206 and the support changes, the inductance of the inductive coil 206 changes to generate a pressing signal. Therefore, when the displacement is large, the signal amount of the generated pressing signal is large, so that the pressing detection is more sensitive.

[0076] It should be understood that FIG. 8 is only an example, and the specific number of inductive coils 206 can be arranged as needed. For example, eight inductive coils 206 can be arranged when eight elastic arms 2032 are arranged. Preferably, the number of inductive coils 206 can be consistent with the number of elastic arms 2032, so that a pressing signal with a large signal amount can be generated by the inductive coil 206 when each elastic arm 2032 is elastically deformed.

[0077] In an example, the inductive coil 206 can adopt a double-coil design, and the inductive coil 206 can also adopt a double-coil design. For example, each inductive coil 206 can be formed by a double-turn coil, and the plurality of inductive coils 206 can be arranged close to the first through hole 2033. The specific structure of the inductive coil 206 is not limited in the embodiment of the application.

[0078] In the embodiment of the application, the sensor 204 includes the inductive coil 206, and the plurality of inductive coils 206 are arranged close to the first through hole 2033 in a direction parallel to the circuit board 202. Therefore, when the elastic arm 2032 is elastically deformed, the displacement of the support relative to the inductive coil 206 is large. Since the pressing signal is generated by the change of inductance in the inductive coil 206, when the displacement is large, the signal amount of the generated pressing signal is large, so that the pressing detection is more sensitive. The user can perform the pressing operation by a small force, and since the plurality of inductive coils 206 are arranged close to the first through hole 2033, the user can perform the pressing operation at any position without needing to perform the pressing operation at a specific position, thereby improving the user experience.

[0079] FIG. 9 is a schematic diagram of another pressing detection device according to an embodiment of the present application. As shown in FIG. 7 and FIG. 9, the inductive coil 206 can be arranged in the circuit board 202 or the inductive coil 206 can be bonded to the circuit board 202.

[0080] An example of the inductive coil 206 being bonded to the circuit board 202 near the side of the support is shown in FIG. 9. An example of the coil being arranged in the circuit board 202 (integrated in the circuit board 202) is shown in FIG. 7.

[0081] In the embodiments of the present application, the inductive coil 206 can be bonded to the circuit board 202 near the side of the support, so that the inductive coil 206 can be opposite to the position of the support body 2031, or the inductive coil 206 can be integrated in the circuit board 202, so that no additional inductive coil 206 is needed, the thickness of the pressing detection device can be reduced, and the inductive coil 206 can be prevented from being separated from the circuit board 202, so that the reliability of the pressing detection device is improved.

[0082] In a possible implementation, as shown in FIG. 2, FIG. 3, FIG. 7 and FIG. 9, the pressing detection device further includes a cover plate 201, the cover plate 201 can provide a pressing surface, the circuit board 202 is arranged between the cover plate 201 and the support, and the cover plate 201 can provide a pressing surface, when the cover plate 201 is pressed, the pressing detection device receives a pressing operation.

[0083] The cover plate 201 provides a pressing surface. In an example, the cover plate 201 can be a glass cover plate 201. The circuit board 202 is arranged between the cover plate 201 and the support, when the cover plate 201 is pressed, for example, a user presses the cover plate 201, the pressing detection device receives a pressing operation, the cover plate 201 drives the circuit board 202 to move in the direction of the pressure, the circuit board 202 drives the elastic arm 2031 to elastically deform, so that the circuit board 202 and the support body 2031 move relatively, at this time, since the support body 2031 is fixed on the shell 301 of the electronic device, the circuit board 202 moves relative to the support body 2031, so that the relative distance between the circuit board 202 and the support body 2031 changes, so that the sensor generates a pressing signal, so that the pressing operation of the user can be recognized. In an example, as shown in FIG. 2, FIG. 3, FIG. 6, FIG. 7 and FIG. 9, the cover plate 201 can be bonded to the circuit board 202 through the first adhesive layer 401.

[0084] Optionally, the circuit board 202 can be a circuit board 202 with touch control recognition function, at this time, the cover plate 201 can also provide a touch surface, when a finger slides on the cover plate 201, the circuit board 202 performs touch control recognition on the sliding track of the finger to generate a touch control recognition signal, and the circuit board 202 can transmit the touch control recognition signal to a touch control recognition chip on the circuit board 202 or a processing unit of the electronic device, so that the electronic device performs a related operation corresponding to the finger sliding, such as moving a cursor, moving a page, page zooming, and the like, which will not be described here.

[0085] In the embodiment of the present application, the pressing detection device further comprises a cover plate 201, so that a pressing surface can be provided to the user, and the user can make the pressing detection device receive the pressing operation when pressing the cover plate 201, so that the pressing operation of the user can be recognized by the pressing detection device. Since the pressing position is not limited, the pressing signal can be generated when the cover plate 201 is pressed, so compared with the pressing detection scheme in the prior art, the user can press anywhere on the cover plate 201, without the need to press at a specific position, thereby improving the user experience.

[0086] FIG. 10 is a schematic view of the positional relationship between a support and a circuit board according to an embodiment of the present application. As shown in FIG. 10, in the direction from the second end of the elastic arm 2032 to the first end of the elastic arm 2032 and parallel to the circuit board 202, the distance between the second end of the elastic arm 2032 and the edge of the cover plate 201 is less than or equal to 25 mm.

[0087] As shown in FIG. 10, the direction of arrow a is for the elastic arm 2032 arranged on the left side of the support body 2031, indicating that the second end of the elastic arm 2032 points to the first end of the elastic arm 2032 and is parallel to the direction of the circuit board 202. The distance J in the figure is the distance between the second end of the elastic arm 2032 and the edge of the cover plate 201 in the direction of arrow a, and the distance J is less than or equal to 25 mm.

[0088] It should be noted that, taking FIG. 10 as an example, for the elastic arm 2032 arranged on the right side of the support body 2031, the direction from the second end of the elastic arm 2032 to the first end of the elastic arm 2032 and parallel to the circuit board 202 is the opposite direction of arrow a.

[0089] In the embodiment of the present application, the distance between the second end of the elastic arm 2032 and the edge of the cover plate 201 in the direction from the second end of the elastic arm 2032 to the first end of the elastic arm 2032 and parallel to the circuit board 202 is less than or equal to 25 mm, thereby the length of the elastic arm 2032 can be limited. When the elastic arm 2032 is too long, the elasticity is weak and rigid deformation is prone to occur. Therefore, limiting the distance between the elastic arm 2032 and the edge of the circuit board 202 to within 25 mm can improve the elasticity of the elastic arm 2032 and improve the reliability of the elastic arm 2032.

[0090] In a possible implementation, the minimum distance between the first end of the elastic arm 2032 and the lower electrode 2042 in the direction parallel to the circuit board 202 is greater than or equal to 10 mm.

[0091] The direction of the arrow a in FIG. 10 is the direction parallel to the circuit board 202. It should be understood that the direction parallel to the circuit board 202 can also be the direction of the arrow b in FIG. 10. The distance K in FIG. 10 is the minimum distance between the first end of the elastic arm 2032 and the lower electrode 2042 in the direction parallel to the circuit board 202. The distance K is greater than or equal to 10 mm.

[0092] It should be understood that when the support body 2031 of the lower electrode 2042 is too close to the elastic arm 2032, the movement of the circuit board 202 with the elastic arm 2032 can cause the circuit board 202 to drive the support body 2031 of the lower electrode 2042 to move. Therefore, the part (for example, the support portion 2034 in FIG. 10) of the support body 2031 on which the lower electrode 2042 is arranged and the lower electrode 2042 arranged on the support body 2031 need to be arranged close to the elastic arm 2032 and also need to have a certain distance from the elastic arm 2032 to prevent the movement of the elastic arm 2032 from driving the support body 2031 to move.

[0093] In an example, the minimum distance between the second end of the elastic arm 2032 and the support portion 2034 is greater than or equal to 10 mm, thereby the distance between the second end of the elastic arm 2032 and the lower electrode 2042 can be greater than or equal to 10 mm.

[0094] In the embodiment of the present application, the minimum distance between the first end of the elastic arm 2032 and the lower electrode 2042 in the direction parallel to the circuit board 202 is greater than or equal to 10 mm, thereby the movement of the circuit board 202 with the elastic arm 2032 to cause elastic deformation can drive the support body 2031 to move with the lower electrode 2042. The relative distance between the upper electrode 2041 and the lower electrode 2042 can be changed when the cover plate 201 is pressed, and the sensor 204 can normally generate a pressing signal when the cover plate 201 is pressed.

[0095] In a possible implementation, the distance between the third end of the elastic arm 2032 and the edge of the cover plate 201 is less than or equal to 25 mm in a direction from the third end of the elastic arm 2032 to the fourth end of the elastic arm 2032 and parallel to the circuit board 202, where the third end and the fourth end of the elastic arm 2032 are perpendicular to the second end of the elastic arm 2032, and the distance between the third end of the elastic arm 2032 and the edge of the cover plate 201 is greater than the distance between the fourth end of the elastic arm 2032 and the edge of the cover plate 201 in the direction from the third end of the elastic arm 2032 to the fourth end of the elastic arm 2032 and parallel to the circuit board 202.

[0096] The b arrow direction in FIG. 10 is for an elastic arm 2032 arranged close to the upper side of the support body 2031, and is used to indicate a direction from the third end of the elastic arm 2032 to the fourth end of the elastic arm 2032 and parallel to the circuit board 202, and the distance L in FIG. 10 is the distance between the third end of the elastic arm 2032 and the edge of the cover plate 201, which is less than or equal to 25 mm.

[0097] It should be noted that, taking FIG. 10 as an example, for an elastic arm 2032 arranged close to the lower side of the support body 2031, the direction from the third end of the elastic arm 2032 to the fourth end of the elastic arm 2032 and parallel to the circuit board 202 is the opposite direction of the b arrow direction.

[0098] In the embodiment of the present application, the minimum distance between the third end of the elastic arm 2032 and the edge of the cover plate 201 is less than or equal to 25 mm in a direction from the third end of the elastic arm 2032 to the fourth end of the elastic arm 2032 and parallel to the circuit board 202, so that the elastic arm 2032 can be elastically deformed when the edge of the cover plate 201 is pressed, and the edge of the cover plate 201 can be supported by the elastic arm 2032, preventing the user from concentrating stress on the elastic arm 2032 that is not arranged close to the edge of the cover plate 201 when the edge of the cover plate 201 is pressed, thereby improving the reliability of the pressing detection device.

[0099] FIG. 11 is a schematic diagram of another support structure provided by an embodiment of the present application, as shown in FIG. 11, the support body 2031 is provided with a cut structure 2035, and the position of the support body 2031 connected with the first end of the elastic arm 2032 and the position of the support body 2031 opposite to the sensor 204 in a direction perpendicular to the circuit board 202 are located on the two sides of the cut structure 2035, respectively.

[0100] The support body 2031 is provided with a plurality of cut-off structures 2035, which cut off the connection between the support body 2031 connected with the elastic arm 2032 and the support body 2031 opposite to the sensor 204. It should be understood that at this time, the support body 2031 and the support body 2031 connected with the elastic arm 2032 are respectively fixed on the circuit board 202, and when the cover plate 201 is pressed, since the elastic arm 2032 is not connected with the support body 2031 opposite to the sensor 204, the elastic arm 2032 will not drive the support body 2031 opposite to the sensor 204 to move when the elastic arm 2032 is elastically deformed, so that the support body 2031 opposite to the sensor 204 will not be displaced when the cover plate 201 is pressed.

[0101] It should be understood that FIG. 11 is only an example for convenient description, and alternatively, the cut-off structure 2035 can not be perpendicular to the elastic arm 2032, and only needs to be cut off between the position where the elastic arm 2032 is connected to the support body 2031 and the position opposite to the sensor 204 in the direction perpendicular to the circuit board 202 on the support body 2031.

[0102] In the embodiment of the present application, the support body 2031 is provided with the cut-off structure 2035, and the position where the elastic arm 2032 is connected to the support body 2031 and the position opposite to the sensor 204 in the direction perpendicular to the circuit board 202 on the support body 2031 are respectively located on the two sides of the cut-off structure 2035, so that when the circuit board 202 drives the elastic arm 2032 to be elastically deformed, the support body 2031 opposite to the sensor 204 will not be displaced, which ensures that the relative distance between the circuit board 202 and the support body 2031 changes when the cover plate 201 is pressed, and can prevent the elastic deformation of the elastic arm 2032 from affecting the position of the support body 2031.

[0103] In a possible implementation, the support body 2031 is provided with a target bolt hole 208, which is used to fix the support body 2031 on the shell 301 of the electronic device by a bolt, and the target bolt hole 208 is located between the position where the elastic arm 2032 is connected to the support body 2031 and the position opposite to the sensor 204 in the direction perpendicular to the circuit board 202 on the support body 2031.

[0104] As shown in FIG. 10, the bracket body 2031 is provided with a plurality of bolt holes, including a target bolt hole 208, which is located on the bracket body 2031 at a position connected to the first end of the elastic arm 2032, and between a position on the bracket body 2031 opposite the sensor 204 in a direction perpendicular to the circuit board 202. In an example, the target bolt hole 208 can be arranged between the second end of the elastic arm 2032 and the sensor 204.

[0105] The plurality of bolt holes can be used to fix the bracket body 2031 to the shell 301 of the electronic device by means of a plurality of bolts, for example, as shown in the sectional views of the foregoing embodiments.

[0106] In the embodiments of the present application, the target bolt hole 208 is arranged between the position on the bracket body 2031 connected to the first end of the elastic arm 2032 and the position on the bracket body 2031 opposite the sensor 204 in a direction perpendicular to the circuit board 202, so that the bracket body 2031 at the position between the first end of the elastic arm 2032 and the sensor 204 can be fixed to the shell of the electronic device, so that when the circuit board 202 drives the elastic arm 2032 to deform elastically, the bracket body 2031 opposite the sensor 204 will not displace, ensuring that the relative distance between the circuit board 202 and the bracket body 2031 changes when the cover plate 201 is pressed, and preventing the elastic deformation of the elastic arm 2032 from affecting the position of the bracket body 2031.

[0107] In a possible implementation, the distance between the first end and the second end of the elastic arm 2032 in a direction parallel to the circuit board 202 ranges from 7mm to 15mm.

[0108] In the embodiments of the present application, the distance between the first end and the second end of the elastic arm 2032 ranges from 7mm to 15mm, i.e., the length of the elastic arm 2032 ranges from 7mm to 15mm, so that the elastic arm 2032 can have a certain elastic deformation capability while having high strength, and thus the reliability of the pressing detection device is high.

[0109] In a possible implementation, the distance between the sensor 204 and the edge of the cover plate 201 in a direction parallel to the circuit board 202 is less than or equal to 15mm.

[0110] In the embodiments of the present application, the distance between the sensor 204 and the edge of the cover plate 201 is less than or equal to 15 mm, so that the sensor 204 can generate a pressing signal when the cover plate 201 is pressed. Since the displacement of the edge of the cover plate 201 is larger than that of the center of the cover plate 201, arranging the sensor 204 close to the edge of the cover plate 201 can make the sensor 204 generate a pressing signal with a larger signal amount, thereby improving the sensitivity of the pressing detection.

[0111] The embodiments of the present application also provide an electronic device, which comprises a shell 301 and a pressing detection apparatus as in any of the above embodiments. The support body 2031 in the pressing detection apparatus is fixed to the shell 301.

[0112] In an example, the support body 2031 can be clamped or adhered to the shell 301 of the electronic device by means of a hot glue. In another example, the support body 2031 can be fixed to the shell 301 of the electronic device by means of a screw, which is not limited herein.

[0113] In a possible implementation, the electronic device comprises a notebook computer, and the support in the pressing detection apparatus is fixed to the C shell of the notebook computer.

[0114] FIG. 12 is a cross-sectional view of an electronic device according to an embodiment of the present application. As shown in FIG. 12, the support body 2031 in the pressing detection apparatus is fixed to the C shell of the notebook computer by means of a screw.

[0115] In the embodiments of the present application, the support in the pressing detection apparatus can be fixed to the C shell of the notebook computer, so that the support body 2031 can be fixed to the shell 301 of the electronic device. Thus, when the cover plate 201 is pressed, the elastic arm 2032 on the support can be deformed to make the sensor 204 generate a pressing signal, thereby realizing the detection of the pressing operation.

[0116] It should be understood that each of the embodiments in the present specification is described in a progressive manner, and the same or similar parts of each embodiment can be referred to each other. Each embodiment mainly describes the difference from other embodiments. Especially for the method embodiments, since the method is basically similar to the method described in the device and system embodiments, the description is relatively simple, and the relevant parts can be referred to the description of other embodiments.

[0117] It is to be understood that the foregoing description is descriptive only, certain embodiments having been described in particularity. Other embodiments are within the scope of the claims. In some cases the acts or steps recited in the claims can be performed in a different order and still accomplish the desired results. Additionally, the processes depicted in the figures do not necessarily require the particular order shown, or sequential order to achieve the desired results. In certain implementations, multitasking and parallel processing can be advantageous or necessary.

[0118] It is to be understood that the singular forms "a," "an," and "the" include plural referents unless the context clearly dictates otherwise. Pronouns in the masculine form include the feminine form, and vice versa, and the singular form also includes the plural form, unless the context clearly dictates otherwise. It is further understood that the terms "comprise" and "comprising," when used in this specification, specify the presence of stated features, integers, steps, or components but do not preclude the presence or addition of one or more other features, integers, steps, components, or groups thereof.

[0119] It is also to be understood that the terminology and phraseology employed herein are for the purpose of description and the specification one or more embodiments of the present application should in no way be limited thereto. The use of such terms and expressions does not therefore exclude any equivalents and it is to be understood that the scope of the claims should cover all these equivalents. Other modifications, variations, and alternatives are also possible. Accordingly, the claims as presented are intended to cover all such alternatives, modifications, and equivalents.

Claims

1. A pressure detection device, applied to electronic devices, characterized in that, include: Circuit boards, brackets, and sensors; The bracket includes a resilient arm and a bracket body connected together, and the bracket body is fixed to the housing of the electronic device; When the pressure detection device receives a pressure operation, the circuit board drives the elastic arm to undergo elastic deformation, causing a change in the relative distance between the support body and the circuit board. The sensor is used to generate a pressing signal when the relative distance between the bracket body and the circuit board changes; The circuit board is used to transmit the pressing signal to the control unit, and to enable the control unit to identify the pressing operation based on the pressing signal.

2. The apparatus according to claim 1, characterized in that, The first end of the elastic arm is connected to the main body of the bracket, the second end of the elastic arm is suspended, and the circuit board is bonded to the elastic arm; When the pressure detection device receives a pressure operation, the circuit board drives the elastic arm to move relative to the support body, causing the elastic arm to produce the elastic deformation.

3. The apparatus according to claim 2, characterized in that, The support body has a first through hole, the first end of the elastic arm is connected to the support body, and the elastic arm extends into the first through hole.

4. The apparatus according to claim 3, characterized in that, Multiple elastic arms extend into the same first through hole, or the support body is provided with multiple first through holes, and each first through hole has one elastic arm extending into it.

5. The apparatus according to claim 2, characterized in that, The elastic arm includes a deformable portion parallel to the support body and a bent portion connecting the deformable portion and the support body, wherein the angle between the bent portion and the support body is greater than zero degrees.

6. The apparatus according to claim 4, characterized in that, The sensor includes an upper electrode and a lower electrode; The upper electrode is bonded to the circuit board, or the upper electrode is disposed within the circuit board; The lower electrode is disposed on the support body, and the upper electrode is disposed opposite to the lower electrode in a direction perpendicular to the circuit board; When the relative distance between the bracket body and the circuit board changes, the relative distance between the upper electrode and the lower electrode changes, causing the capacitance of the sensor to change and generate the pressing signal.

7. The apparatus according to claim 6, characterized in that, When multiple elastic arms extend into the same first through hole, multiple support parts are connected to the main body of the bracket, the support parts extend into the first through hole, and the lower electrode is disposed on the support parts.

8. The apparatus according to claim 6, characterized in that, The upper electrode and the lower electrode have the same area and shape, and in a direction perpendicular to the circuit board, the projection of the lower electrode on the circuit board coincides with the upper electrode.

9. The apparatus according to claim 6, characterized in that, The area of ​​the upper electrode is greater than or equal to 20 square millimeters.

10. The apparatus according to claim 6, characterized in that, In the direction perpendicular to the circuit board, when the pressure detection device does not receive a pressure operation, the distance between the upper electrode and the lower electrode is in the range of [0.3mm, 1.0mm].

11. The apparatus according to claim 6, characterized in that, The lower electrode is electrically connected to the circuit board via a flexible circuit board.

12. The apparatus according to claim 1, characterized in that, The sensor includes an induction coil; The induction coil is disposed on the side of the circuit board opposite to the main body of the support, and the induction coil is electrically connected to the circuit board; The circuit board is used to transmit drive signals to the induction coil; The induction coil is used to receive the drive signal and generate the pressing signal when the distance between the induction coil and the support body changes.

13. The apparatus according to claim 12, characterized in that, The induction coil is disposed inside the circuit board, or the induction coil is bonded to the circuit board.

14. The apparatus according to claim 2, characterized in that, The pressure detection device also includes a cover plate; The circuit board is disposed between the cover plate and the bracket; The cover plate is used to provide a pressing surface; When the cover is pressed, the pressing detection device receives the pressing operation.

15. The apparatus according to claim 14, characterized in that, In a direction from the second end of the elastic arm to the first end of the elastic arm and parallel to the circuit board, the distance between the second end of the elastic arm and the edge of the cover plate is less than or equal to 25 mm.

16. The apparatus according to claim 14, characterized in that, In a direction parallel to the circuit board, the minimum distance between the first end of the elastic arm and the lower electrode is greater than or equal to 10 mm.

17. The apparatus according to claim 14, characterized in that, In a direction from the third end of the elastic arm to the fourth end of the elastic arm and parallel to the circuit board, the distance between the third end of the elastic arm and the edge of the cover plate is less than or equal to 25 mm, wherein the third and fourth ends of the elastic arm are perpendicular to the second end of the elastic arm, and in a direction from the third end of the elastic arm to the fourth end of the elastic arm and parallel to the circuit board, the distance between the third end of the elastic arm and the edge of the cover plate is greater than the distance between the fourth end of the elastic arm and the edge of the cover plate.

18. The apparatus according to claim 14, characterized in that, A cutting structure is provided on the support body. The position on the support body that connects to the first end of the elastic arm and the position on the support body that is opposite to the sensor in the direction perpendicular to the circuit board are respectively located on both sides of the cutting structure.

19. The apparatus according to claim 14, characterized in that, A target bolt hole is provided on the bracket body. The target bolt hole is used to fix the bracket body to the housing of the electronic device by bolts. The target bolt hole is located between the position on the bracket body that is connected to the first end of the elastic arm and the position on the bracket body that is opposite to the sensor in the direction perpendicular to the circuit board.

20. The apparatus according to claim 14, characterized in that, In a direction parallel to the circuit board, the distance between the first end and the second end of the elastic arm ranges from 7mm to 15mm.

21. The apparatus according to any one of claims 14-20, characterized in that, In a direction parallel to the circuit board, the distance between the sensor and the edge of the cover plate is less than or equal to 15 mm.

22. An electronic device, characterized in that, Includes a housing and a pressure detection device as described in any one of claims 1-21; The main support of the pressure detection device is fixed to the outer shell.

23. The device according to claim 22, characterized in that, The electronic device includes: a laptop computer; The main body of the support in the pressure detection device is fixed to the C-shell of the laptop.

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