Keyboard unit and keyboard charging assembly

Abstract

The utility model provides a keyboard unit and a keyboard charging assembly, the keyboard unit is matched with a wireless charging module, and the keyboard unit comprises: a housing having an accommodating portion; the electric energy storage unit is arranged in the shell; the coil is arranged in the shell in a surrounding mode and comprises a conductive contact piece arranged on the containing part. The keyboard charging assembly comprises the keyboard unit. And the wireless charging module is detachably combined with the accommodating part of the shell and comprises an electric power switching judgment unit, a second coil and a second conductive contact element, and the electric power switching judgment unit, the second coil and the second conductive contact element are electrically connected with one another. And the second conductive contact piece is electrically connected with the first conductive contact piece.

Description

TECHNICAL FIELD

[0001] The utility model relates to a keyboard unit and keyboard charging assembly, especially the keyboard unit and keyboard charging assembly that can carry out wireless charging. BACKGROUND

[0002] The power supply mode of general keyboard is wired connection or battery power supply. The wired keyboard is directly connected with the computer host to obtain power and transmit signals to the computer host. However, the wired keyboard is limited by the length of the cable and the area where it is placed is limited. Moreover, the cable of the wired keyboard can also make the desktop messy.

[0003] The battery-powered keyboard is usually installed with a standard battery No. 2 or No. 3 to obtain power and transmit signals to the computer host through Bluetooth. However, the battery-powered keyboard may be interrupted during operation due to the depletion of the battery, causing inconvenience to the user. Moreover, the battery-powered keyboard will continuously generate battery waste during use, causing environmental pollution.

[0004] Therefore, how to design a keyboard unit and keyboard charging assembly that can perform wireless charging to provide wireless charging function for the keyboard is one of the current urgent problems to be solved. SUMMARY

[0005] The utility model provides a keyboard unit and keyboard charging assembly, the keyboard unit includes the first coil, the wireless charging module includes the power switching judgment unit and the second coil. When the user inserts the wireless charging module into the keyboard unit, the power switching judgment unit can select a larger coil, for example, the first coil, to charge, providing wireless charging function for the keyboard.

[0006] The utility model provides a keyboard charging assembly, including keyboard unit including the shell, has the accommodation portion, the power storage unit is arranged in the shell, and the first coil is set along the inner wall of the shell and includes the first conductive contact piece, and the wireless charging module is detachably combined in the accommodation portion of the shell and includes the power switching judgment unit, the second coil and the second conductive contact piece, three are electrically connected with each other, when the wireless charging module is combined with the keyboard unit, the second conductive contact piece is electrically connected with the first conductive contact piece.

[0007] In some embodiments, the first coil generates a first power signal corresponding to a change in a magnetic field, and the second coil generates a second power signal corresponding to the change in the magnetic field.

[0008] In some embodiments, the power switching judgment unit determines that the first power signal is greater than the second power signal, and the power storage unit receives the first power signal.

[0009] In some embodiments, the power switching judging unit judges that the first power signal is less than the second power signal, and the electric energy storage unit receives the second power signal.

[0010] In some embodiments, the product of the number of turns and the cross-sectional area of the first coil is greater than the product of the number of turns and the cross-sectional area of the second coil.

[0011] In some embodiments, the cross-sectional area of the first coil is greater than the cross-sectional area of the second coil.

[0012] In some embodiments, when the product of the number of turns and the cross-sectional area of the first coil is greater than the product of the number of turns and the cross-sectional area of the second coil, the power switching judging unit controls charging by the first coil.

[0013] In some embodiments, the wireless charging module is detachably combined with the accommodating portion of the housing by magnetic force.

[0014] In some embodiments, the keyboard unit further includes a port, which is electrically connected to the electric energy storage unit.

[0015] The utility model provides a keyboard unit coordinates with wireless charging module, and the keyboard unit includes a housing with an accommodating portion; an electric energy storage unit is arranged in the housing; and a first coil is arranged around the housing and includes a first conductive contact arranged on the accommodating portion.

[0016] In summary, the keyboard unit and the keyboard charging assembly can make the wireless charging module detachably combined with the accommodating portion of the housing of the keyboard unit by magnetic force or other means, and the keyboard charging assembly can be flexibly matched.

[0017] Furthermore, the first coil of the keyboard unit and the keyboard charging assembly can generate a first power signal corresponding to the change of the magnetic field, and the second coil can generate a second power signal corresponding to the change of the magnetic field. The power switching judging unit can determine which one of the first power signal and the second power signal is larger, and charge the electric energy storage unit with the larger one. Therefore, the keyboard charging assembly can flexibly adjust the charging mode according to different conditions.

[0018] Moreover, the number of turns of the first coil can be greater than the number of turns of the second coil, and the cross-sectional area of the first coil can be greater than the cross-sectional area of the second coil. When the coverage range of the change of the magnetic field is large, the first coil can play an advantage and generate a larger first power signal to charge the electric energy storage unit.

[0019] In addition, the keyboard unit and the keyboard charging assembly can not only be wirelessly charged by the first coil or the second coil, but also can be connected to an external power supply through the port for wired charging, thereby increasing the flexibility of use. BRIEF DESCRIPTION OF DRAWINGS

[0020] The details of one or more embodiments of the subject matter described in this specification are set forth in the accompanying drawings and the description below. Other features, aspects, and advantages of the subject matter of this specification will become apparent from the description, the drawings and the application as a whole, as set forth in the claims, in which:

[0021] Figure 1 A schematic view of a keyboard unit of a first embodiment of the utility model.

[0022] Figure 2 A schematic view of a keyboard charging assembly of a second embodiment of the utility model.

[0023] Figure 3 A schematic view of a keyboard charging assembly of a third embodiment of the utility model.

[0024] Figure 4 A schematic view of a keyboard charging assembly of a fourth embodiment of the utility model.

[0025] Wherein, the reference signs:

[0026] 1: keyboard charging assembly

[0027] 1A: keyboard charging assembly

[0028] 1B: keyboard charging assembly

[0029] 11: keyboard unit

[0030] 111: housing

[0031] 1111: accommodating portion

[0032] 1112: inner wall

[0033] 112: electric energy storage unit

[0034] 113: first coil

[0035] 1131: first conductive contact

[0036] 114: port

[0037] 12: wireless charging module

[0038] 121: electric power switching judgment unit

[0039] 122: second coil

[0040] 123: second conductive contact

[0041] 124: housing

[0042] A1: cross-sectional area

[0043] A2: cross-sectional area

[0044] N1: normal vector

[0045] N2: normal vector DETAILED DESCRIPTION

[0046] The detailed description and technical content of the present application are described below in conjunction with the accompanying drawings. However, the accompanying drawings are provided for reference and illustration only, and are not intended to limit the present application.

[0047] As used herein, terms such as "first" and "second" are used to describe various components, assemblies, regions, layers, and / or portions, which should not be limited by these terms. These terms can only be used to distinguish one element, assembly, region, layer, or portion from another. Unless the context clearly indicates otherwise, the use of terms such as "first" and "second" herein does not imply order or sequence.

[0048] Figure 1 A schematic diagram of the keyboard unit of the first embodiment of the present application is shown in FIG. 1. Figure 1 As shown in FIG. 1, the keyboard unit 11 includes a housing 111, an electrical energy storage unit 112, and a first coil 113. It is worth mentioning that the keyboard unit 11 of the present embodiment can be used in cooperation with a wireless charging module (such as the wireless charging module 12 described below, which is non-limiting).

[0049] The housing 111 has a receiving portion 1111, and the housing 111 can be, for example, a cuboid, a cube, or other three-dimensional structure. The material of the housing 111 can be, for example, plastic or metal, but this is non-limiting. The receiving portion 1111 can be, for example, a cuboid, a cube, a cylinder, or other recessed structure. In some embodiments, a magnet or a snap structure (such as a tongue-and-groove spring assembly, etc.) can be provided in the receiving portion 1111 to secure the wireless charging module, but this is non-limiting. In some embodiments, a cover plate (such as a spring cover plate) can be provided around the receiving portion 1111 to sandwich the wireless charging module to prevent the wireless charging module from falling out of the receiving portion 1111, but this is non-limiting.

[0050] The electrical energy storage unit 112 is disposed in the housing 111, and the electrical energy storage unit 112 can store electrical energy through charging, such as a rechargeable battery that stores chemical energy or a capacitor that stores potential energy, etc. In some embodiments, the electrical energy storage unit 112 can be a lithium battery or a nickel-hydrogen battery.

[0051] The first coil 113 is arranged along the inner wall 1112 of the shell 111 and comprises a first conductive contact 1131. The first coil 113 can generate an induced electromotive force corresponding to the change of the magnetic field. The first coil 113 can be, for example, an insulated wire wound multiple turns, and can have a shape of a circular cake, a square cake, a rectangular cake, a circular cylinder, a square cylinder, a rectangular cylinder, or the like. The first coil 113 can be arranged in contact with the inner wall 1112 or at an equal distance from the inner wall 1112. One side, two sides, three sides, or four sides of the first coil 113 can be arranged along the inner wall 1112. The first coil 113 can be arranged around the shell 111. The first conductive contact 1131 is made of a conductive material and can be arranged on or in the accommodating portion 1111, so that the first conductive contact 1131 can be electrically connected with the wireless charging module 12 when the keyboard unit 11 cooperates with the wireless charging module 12.

[0052] As described above, when the keyboard unit 11 does not cooperate with the wireless charging module, the first coil 113 can generate an induced electromotive force corresponding to the change of the magnetic field to charge. When the keyboard unit 11 cooperates with the wireless charging module, the accommodating portion 1111 can place the wireless charging module, the magnet or the clamping structure can fix the wireless charging module, and the cover plate can prevent the wireless charging module from falling off the accommodating portion 1111. When the keyboard unit 11 is placed in the magnetic field, the first coil 113 can generate an induced electromotive force corresponding to the change of the magnetic field, the wireless charging module can process the induced electromotive force and output an electric signal, and the energy storage unit 112 can receive the electric signal and store energy.

[0053] Figure 2 FIG. 2 shows a schematic view of a keyboard charging assembly according to a second embodiment of the present application. As shown in FIG. 2, the keyboard charging assembly 1 comprises a keyboard unit 11 and a wireless charging module 12. Figure 2

[0054] The keyboard unit 11 is similar to the keyboard unit 11 of the first embodiment and will not be described here.

[0055] In this embodiment, the magnet is taken as an example. The magnet can be arranged on the wireless charging module 12, and the magnetism of the magnet can be opposite to the magnetism of the corresponding position of the shell 111, so that the wireless charging module 12 is detachably combined with the accommodating portion 1111 of the shell 111 by magnetic force, and the wireless charging module 12 is detachably combined with the accommodating portion 1111 of the shell 111. In other embodiments, the wireless charging module 12 can be fixed by the clamping structure and the shell 111, so that the wireless charging module 12 is detachably combined with the accommodating portion 1111 of the shell 111.

[0056] ​The wireless charging module 12 includes a power switching judgment unit 121, a second coil 122, and a second conductive contact 123, which are electrically connected to each other. The power switching judgment unit 121 can be, for example, a sensor integrated circuit, a microcontroller (MCU), a microprocessor (MPU), a central processing unit (CPU), an application-specific integrated circuit (ASIC), a digital signal processor (DSP), a graphics processing unit (GPU), a field-programmable gate array (FPGA), or a system on a chip (SoC), or other applicable chips, but is not limited thereto. The second coil 122 is similar to the first coil 113, and thus will not be described again. The second conductive contact 123 is similar to the first conductive contact 1131, and thus will not be described again. The power switching judgment unit 121, the second coil 122, and the second conductive contact 123 can be electrically connected by a printed circuit board or a wire.

[0057] When the wireless charging module 12 is combined with the keyboard unit 11, the second conductive contact 123 is electrically connected to the first conductive contact 1131. Since the first conductive contact 1131 and the second conductive contact 123 are both made of conductive materials, the second conductive contact 123 can be directly in contact with the first conductive contact 1131 to form an electrical connection, but is not limited thereto, and there can be other conductive substances between the second conductive contact 123 and the first conductive contact 1131.

[0058] It is worth mentioning that when the keyboard charging assembly 1 is placed in a magnetic field, the first coil 113 can generate a first power signal corresponding to the change of the magnetic field, and the second coil 122 can generate a second power signal corresponding to the change of the magnetic field. For example, when the keyboard charging assembly 1 is placed in a magnetic field with a fixed direction and a changing size, the normal vector N1 of the first coil 113, the normal vector N2 of the second coil 122, and the magnetic field can be completely parallel. Or for example, when the keyboard charging assembly 1 is placed in a magnetic field with a fixed direction and a changing size, the normal vector N1 of the first coil 113 and the magnetic field can be completely parallel, and the angle between the normal vector N2 of the second coil 122 and the normal vector N1 of the first coil 113 is 45 degrees. The above settings can make the first coil 113 and the second coil 122 generate an induced electromotive force corresponding to the change of the magnetic field. The induced electromotive force can form a voltage power signal or a current power signal according to the design of the circuit. Of course, the first coil 113 and the second coil 122 can also be of other various shapes and arranged in other various directions, and the change of the magnetic field can be a change in direction, a change in size, or a change in both direction and size, so that the first coil 113 and the second coil 122 generate an induced electromotive force corresponding to the change of the magnetic field, which can be described by Faraday's law of electromagnetic induction, as shown in Equations 1 and 2:

[0059] Equation 1,

[0060] where ε is the induced electromotive force, t is time, and φ is the magnetic flux of the coil. B where ε is the induced electromotive force, t is time, and φ is the magnetic flux of the coil.

[0061] Equation 2,

[0062] where ε is the induced electromotive force, t is time, and φ is the magnetic flux of the coil. B where ε is the induced electromotive force, t is time, and φ is the magnetic flux of the coil. is the magnetic field at the center of the coil, is the magnetic field at the center of the coil, is any infinitesimal area in the cross-sectional area around the coil.

[0063] It is worth mentioning that the product of the number of turns and the cross-sectional area Al of the first coil 113 can be greater than the product of the number of turns and the cross-sectional area A2 of the second coil 122. The number of turns refers to the number of turns of the first coil 113 or the second coil 122, and the cross-sectional area refers to the cross-sectional area (Al, A2) around the first coil 113 or the second coil 122. For example, when a coil has N turns, and each turn of the coil has a cross-sectional area A, and the cross-sectional area is completely located in a uniform magnetic field, the induced electromotive force can be shown in Equation 3. The induced electromotive force is proportional to the product of the number of turns and the cross-sectional area. When the product of the number of turns and the cross-sectional area Al of the first coil 113 is greater than the product of the number of turns and the cross-sectional area A2 of the second coil 122, the induced electromotive force of the first coil 113 is greater than that of the second coil 122.

[0064] Equation 3,

[0065] where ε is the induced electromotive force, t is time, and φ is the magnetic flux of the coil.

[0066] It is worth mentioning that the cross-sectional area Al of the first coil 113 can be greater than the cross-sectional area A2 of the second coil 122. The first coil 113 can be arranged to make full use of the space of the housing 111, for example, the first coil 113 is arranged in contact with the inner wall 1112 of the housing 111, so that the first coil 113 has a larger cross-sectional area Al. The second coil 122 can be arranged to make full use of the space inside the wireless charging module 12, for example, the second coil 122 is arranged in contact with the housing 124 of the wireless charging module 12. In this way, the cross-sectional area Al of the first coil 113 is greater than the cross-sectional area A2 of the second coil 122. In some embodiments, the number of turns of the first coil 113 is greater than or equal to the number of turns of the second coil 122, and the cross-sectional area Al of the first coil 113 is greater than the cross-sectional area A2 of the second coil 122, so that the induced electromotive force of the first coil 113 is greater than that of the second coil 122. In other certain embodiments, the number of turns of the first coil 113 is less than the number of turns of the second coil 122, and the cross-sectional area Al of the first coil 113 is greater than the cross-sectional area A2 of the second coil 122, so that the induced electromotive force of the first coil 113 is greater than that of the second coil 122.

[0067] It is worth mentioning that when the power switching judging unit 121 judges that the first power signal is greater than the second power signal, the power storage unit 112 receives the first power signal. For example, the voltage power signal of the first power signal is greater than the voltage power signal of the second power signal, the power switching judging unit 121 controls to provide the first power signal to the power storage unit 112. In other words, the power storage unit 112 is charged by the first power signal.

[0068] When the power switching judging unit 121 judges that the first power signal is less than the second power signal, the power storage unit 112 receives the second power signal. For example, when the current power signal of the first power signal is less than the voltage power signal of the current power signal, the power switching judging unit 121 controls to provide the second power signal to the power storage unit 112. In other words, the power storage unit 112 is charged by the second power signal.

[0069] The following illustrates different charging conditions:

[0070] For example, when the product of the number of turns of the first coil 113 and the cross-sectional area A1 is greater than the product of the number of turns of the second coil 122 and the cross-sectional area A2, and the cross-sectional areas (A1, A2) are completely located in the uniform magnetic field, under this condition, the power switching judging unit 121 can control to charge by the first coil 113.

[0071] For example, when the first coil 113 is located in the magnetic field, and the second coil 122 is not located in the magnetic field, under this condition, the power switching judging unit 121 can control to charge by the first coil 113.

[0072] For example, when the cross-sectional area A1 of the first coil 113 and the cross-sectional area A2 of the second coil 122 are located in the same area in the uniform magnetic field, and the number of turns of the first coil 113 is less than the number of turns of the second coil 122, under this condition, the power switching judging unit 121 can control to charge by the second coil 122.

[0073] As mentioned above, the keyboard unit 11 of the keyboard charging assembly 1 of the embodiment has a magnet and a first conductive contact 1131, and the wireless charging module 12 has a magnet and a second conductive contact 123, so that the wireless charging module 12 can be detachably combined with the accommodating portion 1111 of the housing 111 by magnetic force. When the user wants to upgrade the keyboard unit 11, the wireless charging module 12 can be assembled, so that the keyboard unit 11 and the wireless charging module 12 are electrically connected, and the keyboard unit 11 is upgraded to the keyboard charging assembly 1 with wireless charging function.

[0074] Furthermore, the first coil 113 of the keyboard charging assembly 1 of the present embodiment can generate a first power signal corresponding to the change of the magnetic field, and the second coil 122 can generate a second power signal corresponding to the change of the magnetic field. The power switching judging unit 121 can determine which one of the first power signal and the second power signal is larger, and control the larger one to charge the power storage unit 112. Therefore, the keyboard charging assembly 1 can flexibly adjust the charging mode according to different conditions.

[0075] Moreover, the number of turns of the first coil 113 of the keyboard charging assembly 1 of the present embodiment can be greater than the number of turns of the second coil 122, and the cross-sectional area A1 of the first coil 113 can be greater than the cross-sectional area A2 of the second coil 122. When the range of the change of the magnetic field is large, the first coil 113 can have an advantage, generate a larger first power signal, and charge the power storage unit 112.

[0076] Figure 3 For a schematic diagram of the keyboard charging assembly of the third embodiment of the present utility model, please refer to Figure 3 The keyboard charging assembly 1A of the present embodiment is similar to the keyboard charging assembly 1 of the second embodiment, and the difference is that the cross-sectional area A1 of the first coil 113 is smaller than the cross-sectional area A2 of the second coil 122. It is worth noting that in the present embodiment, the number of turns of the first coil 113 can be set to be large, so that the product of the number of turns and the cross-sectional area A1 of the first coil 113 can still be greater than the product of the number of turns and the cross-sectional area A2 of the second coil 122, so that the first power signal is greater than the second power signal. When the power switching judging unit 121 determines that the first power signal is greater than the second power signal, the power storage unit 112 can receive the first power signal.

[0077] In this way, the keyboard charging assembly 1A of the third embodiment can increase the different configuration modes of the keyboard charging assembly.

[0078] Figure 4 For a schematic diagram of the keyboard charging assembly of the fourth embodiment of the present utility model, please refer to Figure 4 The keyboard charging assembly 1B of the present embodiment is similar to the keyboard charging assembly 1 of the second embodiment, and the difference is that the keyboard unit 11 further includes a port 114, which is electrically connected to the power storage unit 112. The port 114 can be, for example, a universal serial bus type A (USB Type-A), a universal serial bus type B (USB Type-B), and a universal serial bus type C (USB Type-C), etc. When the port 114 is connected to an external power supply, the power storage unit 112 can be charged.

[0079] In summary, the keyboard unit and the keyboard charging assembly can make the wireless charging module detachably combined with the accommodating portion of the shell of the keyboard unit through magnetic force or other manners, so that the keyboard charging assembly can be flexibly matched.

[0080] Furthermore, the first coil of the keyboard unit and the keyboard charging assembly can generate a first power signal corresponding to the change of the magnetic field, and the second coil can generate a second power signal corresponding to the change of the magnetic field.

[0081] Moreover, the number of turns of the first coil can be greater than that of the second coil, and the cross-sectional area of the first coil can be greater than that of the second coil.

[0082] In addition, the keyboard unit and the keyboard charging assembly can be connected with an external power supply through the port to perform wired charging in addition to wireless charging through the first coil or the second coil, thereby increasing the flexibility of use.

[0083] The above summarizes the components of several embodiments, so that those skilled in the art to which the present application belongs can better understand the concept of the embodiments of the present application. Those skilled in the art should understand that the embodiments of the present application can be used as a basis to design or modify other processes and structures to achieve the same purpose and / or achieve the same benefits as the embodiments introduced herein. Those skilled in the art should also understand that these equivalent structures do not deviate from the spirit and scope of the present application, and various changes, substitutions and other choices can be made without deviating from the spirit and scope of the present application. Therefore, the scope of protection of the present application shall be subject to the scope defined in the following application patent range.

Claims

1. A keyboard charging component, characterized in that, include: A keyboard unit, comprising: A housing having a receiving portion; An energy storage unit is disposed within the housing; and A first coil is disposed along an inner wall of the housing and includes a first conductive contact; and A wireless charging module is detachably attached to the receiving portion of the housing and includes a power switching judgment unit, a second coil, and a second conductive contact, which are electrically connected to each other. When the wireless charging module is attached to the keyboard unit, the second conductive contact is electrically connected to the first conductive contact.

2. The keyboard charging assembly as described in claim 1, characterized in that, The first coil generates a first power signal in response to a change in a magnetic field, and the second coil generates a second power signal in response to the change in the magnetic field.

3. The keyboard charging assembly as described in claim 2, characterized in that, The power switching judgment unit determines that the first power signal is greater than the second power signal, and the energy storage unit receives the first power signal.

4. The keyboard charging assembly as described in claim 2, characterized in that, The power switching determination unit determines that the first power signal is less than the second power signal, and the energy storage unit receives the second power signal.

5. The keyboard charging assembly as described in claim 1, characterized in that, The product of the number of turns and the cross-sectional area of ​​the first coil is greater than the product of the number of turns and the cross-sectional area of ​​the second coil.

6. The keyboard charging assembly as described in claim 5, characterized in that, The cross-sectional area of ​​the first coil is greater than the cross-sectional area of ​​the second coil.

7. The keyboard charging assembly as described in claim 5, characterized in that, When the product of the number of turns and the cross-sectional area of ​​the first coil is greater than the product of the number of turns and the cross-sectional area of ​​the second coil, the power switching judgment unit controls the first coil to perform a charging.

8. The keyboard charging assembly as claimed in claim 1, characterized in that, The wireless charging module is detachably attached to the housing portion of the casing by a magnetic force.

9. The keyboard charging assembly as claimed in claim 1, characterized in that, The keyboard unit also includes: One port is electrically connected to the energy storage unit.

10. A keyboard unit, used in conjunction with a wireless charging module, characterized in that, The keyboard unit includes: A housing having a receiving portion; An energy storage unit is disposed within the housing; and A first coil is disposed within the housing and includes a first conductive contact disposed on the receiving portion.

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