Key motor system

Abstract

The invention provides a key motor system, and the system comprises a housing which is of a hollow structure; the vibrator assembly is elastically supported in the shell; the stator assemblies drive the vibrator assembly to vibrate in the first direction, the stator assemblies and the vibrator assembly are arranged at intervals, the number of the stator assemblies is two, the stator assemblies are arranged on the two opposite sides of the vibrator assembly in the second direction, the sides, away from the vibrator assembly, of the two stator assemblies are fixed to the shell, and the second direction is perpendicular to the first direction; each stator assembly comprises a stator unit, and the stator unit comprises an iron core and a driving coil which are fixed on the shell; the driving coil is arranged around the iron core; and at least two motor-driven power amplifier units, each motor-driven power amplifier unit being used for driving the driving coil of one stator unit. Compared with the prior art, the key motor system has the advantages that the driving effect is good, and the installation space is saved.

Description

Technical Field

[0001] The present invention relates to the technical field of keys, and in particular, to a key motor system.

Background Art

[0002] A touch key is a key that realizes touch control by sensing a pressing signal. Specifically, it accurately realizes detection by sensing the position and force of pressing, so as to achieve the effect of precise control.

[0003] The touch key mainly includes a housing, a motor fixed in the housing, and a key fixed to the motor. The motor mainly consists of a stator and a vibrator. Among them, the vibrator is elastically supported by the housing and is spaced apart from the stator. The working principle of the touch key is that when the key is pressed, the vibrator will generate a displacement in the pressing direction, and the corresponding control is realized by detecting the displacement amount and the position where the displacement occurs.

[0004] In the related art, the stator of the motor includes a driving coil, and the vibrator includes a magnetic steel. The vibrator is driven to move by the mutual drive of the driving coil and the magnetic steel. However, this motor uses an independent power amplifier chip to drive the driving coil. Limited by the power and current of a single power amplifier, the power of the motor cannot be further improved, and the driving force can only be improved by increasing the device size; this leads to a low driving power of the motor and a relatively large overall occupied space.

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

Summary of the Invention

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

[0007] To solve the above technical problems, an embodiment of the present invention provides a key motor system, which includes:

[0008] A housing, which is provided in a hollow structure;

[0009] A vibrator assembly, which is elastically supported in the housing;

[0010] A stator assembly that drives the vibrator assembly to vibrate in a first direction and is spaced apart from the vibrator assembly. The stator assembly includes two and is disposed on opposite sides of the vibrator assembly along a second direction. One side of each of the two stator assemblies away from the vibrator assembly is fixed to the housing, and the second direction is perpendicular to the first direction;

[0011] Each stator assembly includes a stator unit, and the stator unit includes an iron core fixed to the housing and a driving coil; the driving coil is wound around the iron core; and,

[0012] The motor drive power amplifier unit, and at least two of the motor drive power amplifier units are included, and each of the motor drive power amplifier units is respectively used to drive the drive coil of one of the stator units.

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

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

[0015] Preferably, the key motor system further includes a flexible circuit board. One end of the flexible circuit board away from the oscillator assembly is used to connect to an external power supply, and one end of the flexible circuit board close to the oscillator assembly is fixed to the pole core; the Hall sensor is fixed on 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 connection portion extending from the circuit board body in a direction away from the housing, and a connection portion extending and bending along the first direction from one end of the circuit board body close to the oscillator assembly; the power connection portion is used to connect to the external power supply, the connection portion is fixed on one side of the pole core close to the oscillator assembly, and the Hall sensor is fixed on the connection portion.

[0017] Preferably, each of the stator assemblies 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 in pairs; the number of the motor drive power amplifier units is the same as the number of the stator units, and each of the motor drive power amplifier units drives the drive coil of one of the stator units respectively.

[0018] Preferably, the flexible circuit board includes a first circuit board and a second circuit board oppositely arranged along the third direction, a third circuit board connecting the first circuit board and the second circuit board, and at least two avoidance holes formed through the third circuit board and spaced along the third direction; one end of the first circuit board and the second circuit board away from the stator unit is used to connect the external power supply; the third circuit board is stacked and fixed on one side of the pole core close to the oscillator assembly; the iron core of each stator unit passes through one of the avoidance holes and is fixed on the pole core, the drive coil of each stator unit is stacked and fixed on one side of the third circuit board close to the oscillator assembly, and the inner peripheral side of the drive coil is opposite to the avoidance hole;

[0019] The Hall sensor is fixed on the flexible circuit board and the number thereof is the same as that of the stator units.

[0020] Preferably, the housing includes two outer shells spaced from each other along the second direction and two end caps spaced from each other along the third direction; the outer shell is fixed on one 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 key motor system further includes two elastic components, one end of any one of the elastic components away from the oscillator assembly is fixed on the end cap, and one ends of the two elastic components close to the oscillator assembly are respectively fixed on opposite ends of the oscillator assembly along the third direction.

[0022] Preferably, the elastic component includes a non-metallic elastic member fixed on one side of the end cap close to the oscillator assembly and a connecting member fixed on one side of the non-metallic elastic member close to the oscillator assembly; the side of the connecting member away from the end cap is fixed on the oscillator assembly.

[0023] Compared with the related art, in the key-press motor system of the present invention, by arranging the oscillator assembly and the stator assembly in the housing, the device space can be further reduced, thus not affecting the overall machine space layout; the stator assembly includes two and is arranged on opposite sides of the oscillator assembly, and one side of the two stator assemblies away from the oscillator assembly is respectively fixed to the housing, and the stator assembly and the oscillator assembly are arranged at intervals and drive the oscillator assembly to vibrate in the first direction; the stator assembly includes two and is arranged on opposite sides of the oscillator assembly along the second direction, and one side of the two stator assemblies away from the oscillator assembly is respectively fixed to the housing, and the second direction is perpendicular to the first direction; each stator assembly includes a stator unit; the stator unit includes an iron core and a drive coil stacked and fixed to the housing; the drive coil is arranged around the iron core; the motor drive power amplifier unit includes at least two, and each motor drive power amplifier unit is respectively used to drive the drive coil of one stator unit; so that the motor drive power amplifier unit and the drive coil are in one-to-one correspondence, and the total driving force can be increased by increasing the driving power, the output vibration feeling is enhanced, and the experience effect is good.

BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained according to these drawings, where:

[0025] Figure 1 is a three-dimensional structure schematic diagram of the key-press motor system provided in the first embodiment of the present invention;

[0026] Figure 2 is an exploded view of the key-press motor system provided in the first embodiment of the present invention;

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

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

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

[0030] Figure 6 is a structure schematic diagram of the non-metallic elastic member of the key-press motor system provided in the first embodiment of the present invention.

[0031] Figure 7 is a three-dimensional structure schematic diagram of the key-press motor system provided in the second embodiment of the present invention;

[0032] Figure 8 Exploded schematic diagram of the key motor system provided in the second embodiment of the present invention;

[0033] Figure 9 Along Figure 7 Cross-sectional view taken along line C-C in

[0034] In the figure, 100 is the key motor system, 1 is the housing, 11 is the outer shell, 12 is the end cover, 121 is the end cover body, 122 is the fixing part, 123 is the first fixing hole, 124 is the second fixing hole, 2 is the oscillator 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 assembly, 41 is the non-metallic elastic part, 411 is the elastic part body, 412 is the mounting plate, 413 is the first fixing column, 414 is the second fixing column, 415 is the third fixing column, 416 is the fourth fixing column, 42 is the connecting part, 421 is the connecting part body, 422 is the mounting part, 423 is the first groove, 424 is the second groove, 425 is the third fixing hole, 5 is the Hall sensor, 6 is the flexible circuit board, 61 is the circuit board body, 62 is the power connection part, 63 is the connection part, 64 is the first circuit board, 65 is the second circuit board, 66 is the third circuit board, 67 is the avoidance hole.

Specific Embodiments

[0035] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0036] Embodiment 1

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

[0038] The housing 1 is provided with a hollow structure, and the hollow structure is used for installing and placing the stator assembly 3 and the oscillator assembly 2; it can further reduce the device space, so as not to affect the overall machine space layout, especially the battery size.

[0039] The oscillator assembly 2 is elastically supported in the housing 1, which is convenient for the oscillator assembly 2 to receive the driving feedback to achieve elastic movement when receiving the pressing force of the external keycap.

[0040] The stator assembly 3 drives the oscillator assembly 2 to vibrate in the first direction and is spaced apart from the oscillator assembly 2. The stator assembly 3 includes two and is disposed on opposite sides of the oscillator assembly 2 in the second direction. One side of the two stator assemblies 3 away from the oscillator assembly 2 is respectively fixed to the housing 1, and the second direction is perpendicular to the first direction. Among them, 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, and the stator unit 32 is fixed to one side of the housing 1 close to the oscillator assembly 2. The stator unit 32 includes an iron core 321 and a drive coil 322 that are stacked and fixed to one side of the pole core 31 close to the oscillator assembly 2; the drive coil 322 is disposed around the iron core 321.

[0042] There are at least two of the motor drive power amplifier units, and each motor drive power amplifier unit is respectively used to drive the drive coil 322 of one stator unit 32. By corresponding the motor drive power amplifier unit with the drive coil 322 one by one, the total driving force can be increased by increasing the drive power, the output vibration feeling is enhanced, and the experience effect is good.

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

[0044] In this embodiment, the key motor system 100 further includes a Hall sensor 5. The Hall sensor 5 is fixed to one side of the pole core 31 close to the oscillator assembly 2. The Hall sensor 5 is used to collect the motion data of the oscillator assembly 2 and feedback the motion data to the motor drive power amplifier unit.

[0045] Specifically, when the keycap is pressed, the oscillator assembly 2 generates a displacement in the first direction. The Hall sensors 5 on both sides of the oscillator assembly 2 detect the displacement of the oscillator assembly 2. The Hall chip of the key motor system 100 analyzes the displacement data transmitted by the Hall sensors 5 and uploads it to the whole machine control IC chip. The control IC chip judges the pressing method to realize the operation of the whole machine and determines the feedback signal. The feedback signal is fed back to the motor drive power amplifier unit. The independent power amplifier of the motor drive power amplifier unit drives the independent drive coil 322. The motor drive power increases, the output vibration feeling is enhanced, and the experience effect is good.

[0046] In this embodiment, the key motor system 100 further includes a flexible circuit board 6. One end of the flexible circuit board 6 away from the oscillator assembly 2 is used to connect to an external power supply, and one end of the flexible circuit board 6 close to the oscillator 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 the Hall sensor 5 and the drive coil 322 respectively. The flexible circuit board 6 is used to supply power to the Hall sensor 5 and the drive coil 322. Driving the energized drive coil 322 through the motor drive power amplifier unit can improve the overall drive power of the motor and further improve the driving force. The flexible circuit board 6 is respectively connected to the two stator assemblies 3, and the two flexible circuit boards 6 are respectively arranged to extend in opposite directions away from each other. Optionally, the two flexible circuit boards 6 can also be arranged oppositely, and the installation position of the flexible circuit board 6 is not limited.

[0047] In this embodiment, the flexible circuit board 6 includes a circuit board body 61, a power connection portion 62 extending from the circuit board body 61 away from the housing 1, and a connection portion 63 extending and bending along the first direction from one end of the circuit board body 61 close to the oscillator assembly 2. The power connection portion 62 is used to connect to the external power supply, the connection portion 63 is fixed to one side of the pole core 31 close to the oscillator assembly 2, and the Hall sensor 5 is fixed to the connection portion 63. By fixing the connection portion 63 to the pole core 31, it is convenient to install the Hall sensor 5 and connect the lead wires to the drive coil 322 to achieve electrical connection.

[0048] In this embodiment, the housing 1 includes two outer shells 11 spaced apart from each other along the second direction and two end caps 12 spaced apart from each other along the third direction. The outer shell 11 is fixed to one 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. Among them, the pole core 31 is fixed to one side of the outer shell 11 close to 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 the second direction and the third direction respectively. The third direction is defined as the Y-axis direction. Optionally, the outer shell 11 and the end cap 12 can also be integrally formed, with high structural strength.

[0049] In this embodiment, the key motor system 100 further includes two elastic components 4. One end of any one of the elastic components 4 away from the oscillator assembly 2 is fixed to the end cap 12, and one end of the two elastic components 4 close to the oscillator assembly 2 is respectively fixed to the opposite ends of the oscillator assembly 2 along the third direction. Driving the oscillator assembly 2 to move up and down along the first direction through the stator assembly 3, and making the vibration feeling good when the oscillator assembly 2 moves through the two elastic components 4.

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

[0051] Optionally, the non-metallic elastic member 41 can be made of materials such as silica gel or rubber. The non-metallic elastic member 41 and the connecting member 42 can also be an integrally formed structure.

[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 towards 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 member 41 includes an elastic member body 411, two mounting plates 412 formed by bending and extending from opposite ends of the elastic member body 411 towards the side close to the oscillator assembly 2, a first fixing post 413 protruding and extending from the elastic member body 411 towards the side away from the oscillator assembly 2, two second fixing posts 414 respectively protruding and extending from the two mounting plates 412 towards the side close to the two fixing parts 122, a third fixing post 415 protruding and extending from the elastic member body 411 towards the side close to the oscillator assembly 2, and a fourth fixing post 416 formed by the relative extension of the two mounting plates 412; 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 connecting member 42 includes a connecting member body 421, a mounting part 422 formed by extending from the side of the connecting member body 421 away from the oscillator assembly 2 towards the side close to the end cap 12, a first groove 423 formed by the connecting member body 421 being recessed along the first direction, a second groove 424 formed by the side of the mounting part 422 close to the non-metallic elastic member 41 being recessed therein, and a third fixing hole 425 formed through the mounting part 422 along the extending direction of the fourth fixing post 416; the oscillator 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 magnetic steel 22 stacked and fixed on the lower clamping plate 21, and an upper clamping plate 23 stacked and fixed on the magnetic steel 22; the lower clamping plate 21 is fixed on the side of the connecting member 42 away from the first direction; the driving coil 322 and the magnetic steel 22 generate a magnetic field to drive each other to drive the magnetic steel 22 to move along the first direction. The lower clamping plate 21 is used to support and fix the magnetic steel 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 a magnetic conduction effect for the magnetic steel 22, further improving the magnetic force of the oscillator assembly 2, so that when the stator assembly 3 drives the oscillator assembly 2 to move, the vibration feeling is good.

[0056] Embodiment 2

[0057] Please refer to Figures 1-9 As shown, Embodiment 2 of the present invention is basically the same as Embodiment 1. The difference is that in this embodiment, each stator assembly 3 includes at least two stator units 32 arranged side by side along the third direction; the first direction, the second direction, and the third direction are perpendicular to each other in pairs. The number of the motor drive power amplifier units is the same as the number of the stator units 32, and each motor drive power amplifier unit drives the drive coil 322 of one of the stator units 32 respectively. The motor drive power amplifier unit corresponds to two stator units 32 one by one, and is used to drive the drive coils 322 of the two stator units 32 respectively, so as to realize that the independent motor drive power amplifier unit drives the corresponding drive coil 322, the motor drive power increases, and the output vibration feeling is enhanced. 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 oppositely arranged 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 avoidance holes 67 formed through the third circuit board 66 and spaced along the third direction; one 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 on the side of the pole core 31 close to the oscillator assembly 2; the iron core 321 of each stator unit 32 passes through one of the avoidance holes 67 and is fixed on the pole core 31, and the drive coil 322 of each stator unit 32 is stacked and fixed on the side of the third circuit board 66 close to the oscillator assembly 2. And the inner peripheral side of the drive coil 322 is directly opposite to the avoidance hole 67.

[0059] In this embodiment, the Hall sensor 5 is fixed to the flexible circuit board 6 and the number thereof is the same as that of the stator units 32. The two Hall sensors 5 are respectively and fixedly arranged at intervals on one side of the third circuit board 66 close to the oscillator assembly 2, and one of the Hall sensors 5 is arranged on the side close to the first circuit board 64, and the other Hall sensor 5 is arranged on the side close to the second circuit board 65. By respectively mounting the two Hall sensors 5 on the first circuit board 64 and the second circuit board 65, each stator assembly 3 is provided with at least two stator units 32, so that each stator assembly 3 is provided with at least two drive coils 322, and the corresponding at least two motor drive power amplifier units are arranged to drive one by one, thereby realizing the four-power amplifier drive effect and further improving the driving force.

[0060] Optionally, the number of the drive coils 322 is not only two, but also can be multiple. At the same time, the corresponding motor drive power amplifier units are required to correspond, so as to realize the multiple-power amplifier drive effect.

[0061] Compared with the related art, in the key motor system of the present invention, by arranging the oscillator assembly and the stator assembly in the housing, the device space can be further reduced, so as not to affect the overall machine space layout; the stator assembly includes two and is arranged on opposite sides of the oscillator assembly, and the sides of the two stator assemblies away from the oscillator assembly are respectively fixed to the housing, and the stator assembly and the oscillator assembly are arranged at intervals and drive the oscillator assembly to vibrate along the first direction; the stator assembly includes two and is arranged on opposite sides of the oscillator assembly along the second direction, and the sides of the two stator assemblies away from the oscillator assembly are respectively fixed to the housing, and the second direction is perpendicular to the first direction; each stator assembly includes stator units; the stator units include an iron core and a drive coil that are stacked and fixed to the housing; the drive coil is arranged around the iron core; the motor drive power amplifier unit includes at least two, and each motor drive power amplifier unit is respectively used to drive the drive coil of one stator unit; so that the motor drive power amplifier unit and the drive coil are in one-to-one correspondence, and the total driving force can be improved by increasing the driving power, the output vibration feeling is enhanced, and the experience effect is good.

[0062] The above are only the embodiments of the present invention. It should be noted here that for those of ordinary skill in the art, without departing from the creative concept of the present invention, improvements can be made, but these all belong to the protection scope of the present invention.

Claims

1. A button motor system, characterized in that, The key motor system includes: A housing, which is arranged in a hollow structure; An oscillator assembly, which is elastically supported within the housing; A stator assembly that drives the oscillator assembly to vibrate in a first direction and is spaced apart from the oscillator assembly. The stator assembly includes two and is arranged on opposite sides of the oscillator assembly in a second direction. One side of each of the two stator assemblies away from the oscillator assembly is fixed to the housing, and the second direction is perpendicular to the first direction; Each stator assembly includes a stator unit. The stator unit includes an iron core fixed to the housing and a drive coil; the drive coil is wound around the iron core; and, A motor drive power amplifier unit, which includes at least two. Each motor drive power amplifier unit is respectively used to drive the drive coil of one stator unit.

2. The key motor system according to claim 1, wherein Each stator assembly further includes a pole core, which is clamped and fixed between the stator unit and the housing.

3. The key motor system according to claim 2, wherein The key motor system further includes a Hall sensor, which is fixed to one side of the pole core close to the oscillator assembly. The Hall sensor is used to collect the motion data of the oscillator assembly and feedback the motion data to the motor drive power amplifier unit.

4. The key motor system according to claim 3, characterized in that, The key motor system further includes a flexible circuit board. One end of the flexible circuit board away from the oscillator assembly is used to connect to an external power supply, and one end of the flexible circuit board 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 key motor system according to claim 4, characterized in that, The flexible circuit board includes a circuit board body, a power connection portion extending from the circuit board body in a direction away from the housing, and a connection portion extending and bending in the first direction from one end of the circuit board body close to the oscillator assembly; the power connection portion is used to connect to the external power supply, the connection portion is fixed to one side of the pole core close to the oscillator assembly, and the Hall sensor is fixed to the connection portion.

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

7. The push-button motor system according to claim 6, wherein The flexible circuit board includes a first circuit board and a second circuit board arranged opposite to each other in the third direction, a third circuit board connecting the first circuit board and the second circuit board, and at least two avoidance holes formed through the third circuit board and spaced apart in the third direction; one end of the first circuit board and the second circuit board away from the stator unit is used to connect to the external power supply; the third circuit board is stacked and fixed to one side of the pole core close to the oscillator assembly; the iron core of each stator unit passes through one of the avoidance holes and is fixed to the pole core, and the drive coil of each stator unit is stacked and fixed to one side of the third circuit board close to the oscillator assembly; The Hall sensors are fixed to the flexible circuit board and the number thereof is the same as that of the stator units.

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

9. The key motor system according to claim 8, wherein, The key motor system further includes two elastic components. One end of any one of the elastic components away from the oscillator assembly is fixed to the end cap, and one ends of the two elastic components close to the oscillator assembly are respectively fixed to opposite ends of the oscillator assembly along the third direction.

10. The key motor system according to claim 9, wherein The elastic component includes a non-metallic elastic member fixed to a side of the end cap close to the oscillator assembly and a connecting member fixed to a side of the non-metallic elastic member close to the oscillator assembly; the side of the connecting member away from the end cap is fixed to the oscillator assembly.

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