Button motor system

Abstract

Provided in the present invention is a button motor system. The button motor system comprises: a housing, the housing being configured to be of a hollow structure; a vibrator assembly, the vibrator assembly being elastically supported in the housing; stator assemblies, which drive the vibrator assembly to vibrate in a first direction and are spaced apart from the vibrator assembly, wherein there are two stator assemblies which are arranged on two opposite sides of the vibrator assembly in a second direction, the sides of the two stator assemblies away from the vibrator assembly are separately fixed to the housing, and the second direction is perpendicular to the first direction; each stator assembly comprising a stator unit, the stator unit comprising an iron core and a driving coil fixed to the housing, and the driving coil being arranged around the iron core; and motor driving and power amplification units, wherein there are at least two motor driving and power amplification units, and each motor driving and power amplification unit is used for driving the driving coil of one stator unit. Compared with the related art, the button motor system of the present invention has good driving effect and saves installation space.

Description

Button motor system Technical Field

[0001] This invention relates to the field of button technology, and more particularly to a button motor system. Background Technology

[0002] Touch buttons are a type of button that uses pressure signals to achieve touch control. Specifically, they accurately detect the location and pressure applied to achieve precise control.

[0003] The touch button mainly consists of a housing, a motor fixed inside the housing, and a button fixed to the motor. The motor mainly consists of a stator and an oscillator, with the oscillator elastically supported by the housing and spaced apart from the stator. The working principle of the touch button is that when the button is pressed, the oscillator will displace in the pressing direction. By detecting the amount of displacement and the location of the displacement, corresponding control can be achieved. Technical issues

[0004] In related technologies, the stator of a motor includes a drive coil, and the oscillator includes a magnet. The drive coil and the magnet drive each other to move the oscillator. However, this motor uses a separate power amplifier chip to drive the drive coil. Due to the limitations of the power and current of the single power amplifier, the motor power cannot be further increased, and the driving force can only be increased by increasing the size of the components; thus, the motor driving power is low and the overall space occupied is large.

[0005] Therefore, it is necessary to provide a new button motor system to solve the above problems. Technical solutions

[0006] The technical problem to be solved by the present invention is to provide a button motor system with good motor driving effect and saving installation space.

[0007] To address the aforementioned technical problems, embodiments of the present invention provide a button motor system, the button motor system comprising:

[0008] The housing is configured with a hollow structure;

[0009] An oscillator assembly, which is elastically supported within the housing;

[0010] A stator assembly is provided to drive the oscillator assembly to vibrate along a first direction and is spaced apart from the oscillator assembly. The stator assembly includes two stators and is provided on opposite sides of the oscillator assembly along a second direction. The sides of the two stators away from the oscillator assembly are respectively fixed to the housing. The second direction is perpendicular to the first direction.

[0011] Each of the stator assemblies includes a stator unit, the stator unit including an iron core fixed to the housing and a drive coil; the drive coil is disposed around the iron core; and,

[0012] The motor drive amplifier unit includes at least two motor drive amplifier units, each of which is used to drive the drive coil of one of the stator units.

[0013] Preferably, each of the stator assemblies further includes a pole core, which is clamped and fixed between the stator unit and the housing.

[0014] Preferably, the button motor system further includes a Hall sensor, which is fixed to the side of the pole core near the oscillator assembly. The Hall sensor is used to collect motion data of the oscillator assembly and feed the motion data back to the motor drive amplifier unit.

[0015] Preferably, the button motor system further includes a flexible circuit board, the end of which is away from the oscillator assembly is used to connect to an external power source, and the end of which is close to the oscillator assembly is fixed to the pole core; the Hall sensor is fixed to the flexible circuit board, and the flexible circuit board is electrically connected to the Hall sensor and the drive coil respectively.

[0016] Preferably, the flexible circuit board includes a circuit board body, a power receiving portion extending from the circuit board body in a direction away from the housing, and a connecting portion extending from one end of the circuit board body near the oscillator assembly in a bent direction along the first direction; the power receiving portion is used to connect to the external power source, the connecting portion is fixed to the side of the electrode core near the oscillator assembly, and the Hall sensor is fixed to the connecting portion.

[0017] Preferably, each stator assembly includes at least two stator units arranged side by side along a third direction; the first direction, the second direction, and the third direction are perpendicular to each other; the number of motor drive amplifier units is the same as the number of stator units, and each motor drive amplifier unit drives the drive coil of one of the stator units.

[0018] Preferably, the flexible circuit board includes a first circuit board and a second circuit board disposed opposite to each other along the third direction, a third circuit board connecting the first circuit board and the second circuit board, and at least two clearance holes formed through the third circuit board and spaced apart along the third direction; the ends of the first circuit board and the second circuit board away from the stator unit are used to connect to the external power supply; the third circuit board is stacked and fixed to the pole core on the side near the oscillator assembly; the iron core of each stator unit passes through one of its clearance holes and is fixed to the pole core, and the drive coil of each stator unit is stacked and fixed to the side of the third circuit board near the oscillator assembly, and the inner circumference of the drive coil is directly opposite the clearance hole;

[0019] The Hall sensors are fixed to the flexible circuit board, and their number is the same as the number of the stator units.

[0020] Preferably, the housing includes two outer shells spaced apart from each other along the second direction and two end caps spaced apart from each other along the third direction; the outer shells are fixed to the side of the stator assembly away from the oscillator assembly, and the oscillator assembly is elastically supported between the two end caps.

[0021] Preferably, the button motor system further includes two elastic components, one end of which is fixed to the end cap away from the vibrator assembly, and the other ends of which are fixed to opposite ends of the vibrator assembly along the third direction.

[0022] Preferably, the elastic component includes a non-metallic elastic member fixed to the side of the end cap near the oscillator assembly and a connector fixed to the side of the non-metallic elastic member near the oscillator assembly; the side of the connector away from the end cap is fixed to the oscillator assembly. Beneficial effects

[0023] Compared with the prior art, in the button motor system of the present invention, by setting the resonator assembly and stator assembly inside the housing, the space of the device can be further reduced, thus not affecting the overall space layout of the machine. The stator assembly includes two components and is located on opposite sides of the resonator assembly. The sides of the two stator assemblies away from the resonator assembly are respectively fixed to the housing. The stator assemblies are spaced apart from the resonator assembly and drive the resonator assembly to vibrate along a first direction. The stator assembly also includes two components and is located on opposite sides of the resonator assembly along a second direction. The sides of the two stator assemblies away from the resonator assembly are respectively fixed to the housing. The second direction is perpendicular to the first direction. Each stator assembly includes a stator unit. The stator unit includes an iron core stacked and fixed to the housing and a drive coil. The drive coil is arranged around the iron core. The motor drive amplifier unit includes at least two components, each used to drive the drive coil of one stator unit. By corresponding the motor drive amplifier unit with the drive coil one-to-one, the total driving force can be increased by increasing the driving power, resulting in enhanced output vibration and a better user experience. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, wherein:

[0025] Figure 1 is a three-dimensional structural schematic diagram of the button motor system provided in Embodiment 1 of the present invention;

[0026] Figure 2 is an exploded view of the button motor system provided in Embodiment 1 of the present invention;

[0027] Figure 3 is a partial exploded view of Figure 2;

[0028] Figure 4 is a cross-sectional view along line AA in Figure 1;

[0029] Figure 5 is a cross-sectional view along line BB in Figure 1;

[0030] Figure 6 is a schematic diagram of the structure of the non-metallic elastic component of the button motor system provided in Embodiment 1 of the present invention.

[0031] Figure 7 is a three-dimensional structural schematic diagram of the button motor system provided in Embodiment 2 of the present invention;

[0032] Figure 8 is an exploded view of the button motor system provided in Embodiment 2 of the present invention;

[0033] Figure 9 is a cross-sectional view along line CC in Figure 7.

[0034] In the diagram, 100 is the button motor system; 1 is the housing; 11 is the outer shell; 12 is the end cap; 121 is the end cap body; 122 is the fixing part; 123 is the first fixing hole; 124 is the second fixing hole; 2 is the vibrator assembly; 21 is the lower clamping plate; 22 is the magnet; 23 is the upper clamping plate; 3 is the stator assembly; 31 is the pole core; 32 is the stator unit; 321 is the iron core; 322 is the drive coil; 4 is the elastic component; 41 is the non-metallic elastic element; 411 is the elastic element body; 412 is the mounting plate. 413. First fixing post; 414. Second fixing post; 415. Third fixing post; 416. Fourth fixing post; 42. Connector; 421. Connector body; 422. Mounting part; 423. First groove; 424. Second groove; 425. Third fixing hole; 5. Hall sensor; 6. Flexible circuit board; 61. Circuit board body; 62. Power receiving part; 63. Connecting part; 64. First circuit board; 65. Second circuit board; 66. Third circuit board; 67. Clearance hole. Embodiments of the present invention

[0035] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] Example 1

[0037] Please refer to Figures 1-6. An embodiment of the present invention provides a button motor system 100, which includes a housing 1, an oscillator assembly 2, a stator assembly 3, and a motor drive amplifier unit (not shown in the figures).

[0038] The housing 1 has a hollow structure, and the stator assembly 3 and the oscillator assembly 2 are installed inside the hollow structure; this allows the space for the devices to be further reduced, so as not to affect the overall space layout, especially the battery size.

[0039] The oscillator assembly 2 is elastically supported inside the housing 1, so that when the oscillator assembly 2 receives the pressing pressure of the external keycap, it receives driving feedback to achieve elastic movement.

[0040] The stator assembly 3 drives the oscillator assembly 2 to vibrate along a first direction and is spaced apart from the oscillator assembly 2. The stator assembly 3 comprises two assemblies disposed on opposite sides of the oscillator assembly 2 along a second direction. The sides of the two stator assemblies 3 furthest from the oscillator assembly 2 are respectively fixed to the housing 1. The second direction is perpendicular to the first direction. Here, the first direction is defined as the Z-axis direction, and the second direction is defined as the X-axis direction.

[0041] Each stator assembly 3 includes a stator unit 32, which is fixed to the housing 1 on the side near the oscillator assembly 2. The stator unit 32 includes an iron core 321 and a drive coil 322 stacked and fixed to the pole core 31 on the side near the oscillator assembly 2; the drive coil 322 is arranged around the iron core 321.

[0042] The motor drive amplifier unit includes at least two units, each of which is used to drive the drive coil 322 of one of the stator units 32. By corresponding the motor drive amplifier units with the drive coils 322 one by one, the total driving force can be increased by increasing the driving power, resulting in enhanced output vibration and a better user experience.

[0043] In this embodiment, each stator assembly 3 further includes a pole core 31, which is clamped and fixed between the stator unit 2 and the housing 1. The pole core 31 enhances the overall magnetic field performance of the stator unit 32.

[0044] In this embodiment, the button motor system 100 further includes a Hall sensor 5, which is fixed to the side of the pole core 31 near the oscillator assembly 2. The Hall sensor 5 is used to collect motion data of the oscillator assembly 2 and feed the motion data back to the motor drive amplifier unit.

[0045] Specifically, when a keycap is pressed, the resonator assembly 2 displaces along the first direction. Hall sensors 5 on both sides of the resonator assembly 2 detect this displacement. The Hall chip in the key motor system 100 analyzes the displacement data transmitted by the Hall sensors 5 and uploads it to the overall control IC chip. The control IC chip determines the pressing method, implements the overall operation, and determines the feedback signal. This feedback signal is sent to the motor drive amplifier unit, which independently amplifies and drives the independent drive coil 322. This increases the motor drive power, enhances the output vibration, and provides a better user experience.

[0046] In this embodiment, the button motor system 100 further includes a flexible circuit board 6. One end of the flexible circuit board 6 away from the resonator assembly 2 is used to connect to an external power source, and the other end of the flexible circuit board 6 near the resonator assembly 2 is fixed to the pole core 31. The Hall sensor 5 is fixed to the flexible circuit board 6, and the flexible circuit board 6 is electrically connected to both the Hall sensor 5 and the drive coil 322. The flexible circuit board 6 provides power to the Hall sensor 5 and the drive coil 322. Driving the energized drive coil 322 through the motor drive amplifier unit improves the overall drive power of the motor, further increasing the driving force. The flexible circuit boards 6 are respectively connected to the two stator assemblies 3, and the two flexible circuit boards 6 extend in a relatively far apart direction. Optionally, the two flexible circuit boards 6 can also be installed opposite each other, and the installation position of the flexible circuit boards 6 is not limited.

[0047] In this embodiment, the flexible circuit board 6 includes a circuit board body 61, a power receiving portion 62 extending from the circuit board body 61 away from the housing 1, and a connecting portion 63 extending from one end of the circuit board body 61 near the oscillator assembly 2, bent along the first direction. The power receiving portion 62 is used to connect to the external power source, the connecting portion 63 is fixed to the side of the electrode core 31 near the oscillator assembly 2, and the Hall sensor 5 is fixed to the connecting portion 63. Fixing the Hall sensor 5 to the electrode core 31 via the connecting portion 63 facilitates its installation and electrical connection with the lead wire of the drive coil 322.

[0048] In this embodiment, the housing 1 includes two outer shells 11 spaced apart along the second direction and two end caps 12 spaced apart along a third direction. The outer shells 11 are fixed to the side of the stator assembly 3 away from the oscillator assembly 2, and the oscillator assembly 2 is elastically supported between the two end caps 12. The pole core 31 is fixed to the side of the outer shell 11 near the oscillator assembly 2. The second direction and the third direction are in the same plane and perpendicular to each other, and the first direction is perpendicular to both the second direction and the third direction. The third direction is defined as the Y-axis direction. Optionally, the outer shells 11 and the end caps 12 can also be integrally formed, resulting in high structural strength.

[0049] In this embodiment, the button motor system 100 further includes two elastic components 4. The end of any one of the elastic components 4 furthest from the vibrator assembly 2 is fixed to the end cover 12, and the ends of the two elastic components 4 closest to the vibrator assembly 2 are respectively fixed to opposite ends of the vibrator assembly 2 along the third direction. The stator assembly 3 drives the vibrator assembly 2 to move up and down along the first direction, and the two elastic components 4 ensure good vibration feedback when the vibrator assembly 2 moves.

[0050] In this embodiment, the elastic component 4 includes a non-metallic elastic member 41 fixed to the side of the end cap 12 near the oscillator assembly 2 and a connector 42 fixed to the side of the non-metallic elastic member 41 near the oscillator assembly 2; the side of the connector 42 away from the end cap 12 is fixed to the oscillator assembly 2.

[0051] Optionally, the non-metallic elastic element 41 can be made of materials such as silicone or rubber. The non-metallic elastic element 41 and the connector 42 can also be integrally formed.

[0052] In this embodiment, the end cap 12 includes an end cap body 121, two fixing parts 122 formed by bending and extending from opposite ends of the end cap body 121 toward the side close to the oscillator assembly 2, a first fixing hole 123 formed through the end cap body 121, and two second fixing holes 124 formed through the two fixing parts 122 respectively.

[0053] The non-metallic elastic element 41 includes an elastic element body 411, two mounting plates 412 formed by bending and extending from opposite ends of the elastic element body 411 toward the side close to the vibrator assembly 2, a first fixing post 413 formed by protruding from the elastic element body 411 toward the side away from the vibrator assembly 2, two second fixing posts 414 formed by protruding from the two mounting plates 412 toward the side close to the two fixing parts 122, a third fixing post 415 formed by protruding from the elastic element body 411 toward the side close to the vibrator assembly 2, and a fourth fixing post 416 formed by the two mounting plates 412 extending relative to each other; the first fixing post 413 is disposed in the first fixing hole 123, and the second fixing post 414 is disposed in the second fixing hole 124.

[0054] The connector 42 includes a connector body 421, a mounting portion 422 extending from the side of the connector body 421 away from the vibrator assembly 2 toward the end cap 12, a first groove 423 recessed from the connector body 421 along the first direction, a second groove 424 recessed from the side of the mounting portion 422 near the non-metallic elastic member 41, and a third fixing hole 425 extending through the mounting portion 422 along the extending direction of the fourth fixing post 416; the vibrator assembly 2 is fixed in the first groove 423, the third fixing post 415 is disposed in the second groove 424, and the fourth fixing post 416 is disposed in the third fixing hole 425.

[0055] In this embodiment, the oscillator assembly 2 includes a lower clamping plate 21, a magnet 22 stacked and fixed to the lower clamping plate 21, and an upper clamping plate 23 stacked and fixed to the magnet 22. The lower clamping plate 21 is fixed to the side of the connecting member 42 away from the first direction. The driving coil 322 and the magnet 22 generate a magnetic field that drives each other to move the magnet 22 along the first direction. The lower clamping plate 21 supports and fixes the magnet 22 and the upper clamping plate 23. At the same time, the upper clamping plate 23 and the lower clamping plate 21 can also provide magnetic conductivity for the magnet 22, further improving the magnetic force of the oscillator assembly 2, so that the stator assembly 3 drives the oscillator assembly 2 to move with good vibration.

[0056] Example 2

[0057] Please refer to Figures 1-9. Embodiment 2 of the present invention is basically the same as Embodiment 1, except that in this embodiment, each stator assembly 3 includes at least two stator units 32 arranged side-by-side along a third direction; the first direction, the second direction, and the third direction are mutually perpendicular. The number of motor drive amplifier units is the same as the number of stator units 32, and each motor drive amplifier unit drives the drive coil 322 of one of the stator units 32. Each motor drive amplifier unit corresponds one-to-one with two stator units 32, and is used to drive the two drive coils 322 of the two stator units 32 respectively, thereby realizing that an independent motor drive amplifier unit drives the corresponding drive coil 322, increasing the motor drive power and enhancing the output vibration. The third direction is defined as the Y-axis direction.

[0058] In this embodiment, the flexible circuit board 6 includes a first circuit board 64 and a second circuit board 65 disposed opposite each other along the third direction, a third circuit board 66 connecting the first circuit board 64 and the second circuit board 65, and at least two clearance holes 67 formed through the third circuit board 66 and spaced apart along the third direction; the ends of the first circuit board 64 and the second circuit board 65 away from the stator unit 32 are used to connect to the external power supply; the third circuit board 66 is stacked and fixed to the pole core 31 on the side near the oscillator assembly 2; the iron core 321 of each stator unit 32 passes through one of its clearance holes 67 and is fixed to the pole core 31, and the drive coil 322 of each stator unit 32 is stacked and fixed to the side of the third circuit board 66 near the oscillator assembly 2. The inner circumference of the drive coil 322 is directly opposite the clearance hole 67.

[0059] In this embodiment, the Hall sensors 5 are fixed to the flexible circuit board 6, and their number is the same as the number of stator units 32. Two Hall sensors 5 are respectively fixed at intervals on the side of the third circuit board 66 near the vibrator assembly 2, with one Hall sensor 5 positioned near the side of the first circuit board 64 and the other Hall sensor 5 positioned near the side of the second circuit board 65. By mounting the two Hall sensors 5 on the first circuit board 64 and the second circuit board 65 respectively, each stator assembly 3 is provided with at least two stator units 32, such that each stator assembly 3 has at least two drive coils 322. By correspondingly setting at least two motor drive power amplifier units, one-to-one driving is achieved, thereby realizing a four-amplifier driving effect and further improving the driving force.

[0060] Optionally, the number of drive coils 322 is not limited to two, but can also be multiple, and corresponding motor drive power amplifier units are required to achieve the effect of multiple power amplifiers.

[0061] Compared with related technologies, in the button motor system of the present invention, by placing the resonator assembly and stator assembly inside the housing, the space of the components can be further reduced, thus not affecting the overall spatial layout of the device. Two stator assemblies are included and disposed on opposite sides of the resonator assembly. The sides of the two stator assemblies away from the resonator assembly are respectively fixed to the housing. The stator assemblies are spaced apart from the resonator assembly and drive the resonator assembly to vibrate along a first direction. Two stator assemblies are also included and disposed on opposite sides of the resonator assembly along a second direction. The sides of the two stator assemblies away from the resonator assembly are respectively fixed to the housing. The second direction is perpendicular to the first direction. Each stator assembly includes a stator unit. The stator unit includes an iron core stacked and fixed to the housing and a drive coil. The drive coil is arranged around the iron core. At least two motor drive amplifier units are included, each motor drive amplifier unit driving the drive coil of one stator unit. By corresponding the motor drive amplifier units with the drive coils one-to-one, the total driving force can be increased by increasing the driving power, resulting in enhanced output vibration and a better user experience.

[0062] The above description is merely an embodiment of the present invention. It should be noted that those skilled in the art can make improvements without departing from the inventive concept of the present invention, but these improvements all fall within the protection scope of the present invention.

Claims

1. A pushbutton motor system, characterized by The button motor system includes: The housing is configured with a hollow structure; An oscillator assembly, which is elastically supported within the housing; A stator assembly is provided to drive the oscillator assembly to vibrate along a first direction and is spaced apart from the oscillator assembly. The stator assembly includes two stators and is provided on opposite sides of the oscillator assembly along a second direction. The sides of the two stators away from the oscillator assembly are respectively fixed to the housing. The second direction is perpendicular to the first direction. Each of the stator assemblies includes a stator unit, the stator unit including an iron core fixed to the housing and a drive coil; the drive coil is disposed around the iron core; and, The motor drive amplifier unit includes at least two motor drive amplifier units, each of which is used to drive the drive coil of one of the stator units.

2. The pushbutton motor system of claim 1, wherein, Each of the stator assemblies further includes a pole core, which is clamped and fixed between the stator unit and the housing.

3. The pushbutton motor system of claim 2, wherein, The button motor system also includes a Hall sensor, which is fixed to the side of the pole core near the oscillator assembly. The Hall sensor is used to collect motion data of the oscillator assembly and feed the motion data back to the motor drive amplifier unit.

4. The pushbutton motor system of claim 3, wherein, The button motor system also includes a flexible circuit board, the end of which is away from the oscillator assembly is used to connect to an external power source, and the end of which is close to the oscillator assembly is fixed to the pole core; the Hall sensor is fixed to the flexible circuit board, and the flexible circuit board is electrically connected to the Hall sensor and the drive coil respectively.

5. The pushbutton motor system of claim 4, wherein, The flexible circuit board includes a circuit board body, a power receiving portion extending from the circuit board body away from the housing, and a connecting portion extending from one end of the circuit board body near the oscillator assembly in a bent direction along the first direction; the power receiving portion is used to connect to the external power source, the connecting portion is fixed to the side of the electrode core near the oscillator assembly, and the Hall sensor is fixed to the connecting portion.

6. The pushbutton motor system of claim 4, wherein, Each stator assembly includes at least two stator units arranged side-by-side along a third direction; the first direction, the second direction, and the third direction are perpendicular to each other; the number of motor drive amplifier units is the same as the number of stator units, and each motor drive amplifier unit drives the drive coil of one of the stator units.

7. The pushbutton motor system of claim 6, wherein, The flexible circuit board includes a first circuit board and a second circuit board disposed opposite to each other along the third direction, a third circuit board connecting the first circuit board and the second circuit board, and at least two clearance holes formed through the third circuit board and spaced apart along the third direction; the ends of the first circuit board and the second circuit board away from the stator unit are used to connect to the external power supply; the third circuit board is stacked and fixed to the pole core on the side near the oscillator assembly; the iron core of each stator unit passes through one of its clearance holes and is fixed to the pole core, and the drive coil of each stator unit is stacked and fixed to the side of the third circuit board near the oscillator assembly; The Hall sensors are fixed to the flexible circuit board, and their number is the same as the number of the stator units.

8. The pushbutton motor system of claim 6, wherein, The housing includes two outer shells spaced apart from each other along the second direction and two end caps spaced apart from each other along the third direction; the outer shells are fixed to the side of the stator assembly away from the oscillator assembly, and the oscillator assembly is elastically supported between the two end caps.

9. The pushbutton motor system of claim 8, wherein, The button motor system also includes two elastic components. The end of one of the elastic components away from the vibrator assembly is fixed to the end cap, and the ends of the two elastic components near the vibrator assembly are respectively fixed to the opposite ends of the vibrator assembly along the third direction.

10. The pushbutton motor system of claim 9, wherein, The elastic component includes a non-metallic elastic element fixed to the side of the end cap near the oscillator assembly and a connector fixed to the side of the non-metallic elastic element near the oscillator assembly; the side of the connector away from the end cap is fixed to the oscillator assembly.

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