Keyed motor and electronic device

Abstract

The utility model relates to key technical field especially, it relates to a kind of key motor and electronic equipment.Key motor includes two non-metallic elastic members and sensor;Two non-metallic elastic members are fixed in the opposite end of shell respectively, non-metallic elastic member can produce deformation along first direction, two non-metallic elastic members are also respectively with vibrator assembly form fixed connection, and vibrator assembly is elastically suspended in shell;Sensor is fixed in one pole core far from key one side close to magnetic steel, sensor is used to detect vibrator assembly movement.Compared with prior art, the key motor of the utility model by setting sensor in vibrator assembly, sensor does not occupy additional thickness space, so that the thickness of key motor is thinner;Meanwhile, the non-metallic spring is used, and the spring occupied space can be significantly reduced, the magnetic circuit size of key motor is increased as far as possible under limited size, so that the driving efficiency of key motor is higher.

Description

Technical Field

[0001] This utility model relates to the field of button technology, and in particular to a button motor and electronic device. Background Technology

[0002] In modern electronic devices, button motors accurately detect the position and pressure of pressed buttons to achieve precise control, providing users with intuitive and accurate tactile feedback. They are widely used in smartphones, tablets, home appliances, and other electronic devices.

[0003] However, the button motors in related technologies require sensors to detect the pressing signal, and the sensors occupy additional thickness space of the button motor, increasing the thickness of the button motor. At the same time, the use of metal elastic components to support its structure occupies additional space and affects the magnetic circuit size, resulting in low driving efficiency of the button motor, which makes it difficult to meet the requirements of modern electronic devices for high driving efficiency and ultra-thin design.

[0004] Therefore, it is necessary to provide a new button motor to solve the above-mentioned technical problems. Utility Model Content

[0005] The purpose of this invention is to provide a button motor and electronic device, which aims to solve the problems of low driving efficiency and large thickness in button motors and electronic devices in related technologies.

[0006] To achieve the above objectives, this utility model provides a button motor, comprising a hollow housing with an opening, a stator assembly fixed to opposite sides of the housing, an oscillator assembly elastically supported at opposite ends of the housing, and a button fixed to the oscillator assembly by the opening of the housing. The stator assembly drives the oscillator assembly to move along a first direction. The stator assembly is disposed on opposite sides of the oscillator assembly along a second direction and spaced apart from the oscillator assembly. The second direction is perpendicular to the first direction. The oscillator assembly includes a magnet and pole cores stacked and fixed to opposite sides of the magnet along the first direction. The button is fixed to one of the pole cores on the side away from the magnet. The stator assembly includes two iron cores fixed to opposite sides of the housing along the second direction and coils wound around the iron cores.

[0007] The button motor also includes two non-metallic elastic elements made of non-metallic elastic material and a sensor; the two non-metallic elastic elements are respectively connected between the two opposite ends of the oscillator assembly along a third direction and the housing, the third direction being perpendicular to the second direction and the first direction; the non-metallic elastic elements are capable of elastic deformation along the first direction and elastically suspending the oscillator assembly within the housing; the sensor is fixed to the pole core and located in the same plane as the magnet, and the sensor is used to detect the pressing action of the button.

[0008] Preferably, the sensor comprises two sensors, which are disposed on opposite sides of the magnet along the third direction and spaced apart from the magnet.

[0009] Preferably, the button motor further includes a connector, one end of which is fixedly connected to the non-metallic elastic element, and the other end of which is fixedly connected to the vibrator assembly.

[0010] Preferably, the connector is fixedly connected to the electrode core and spaced apart from the sensor.

[0011] Preferably, the non-metallic elastic element includes an elastic element body, two extension arms formed by bending the two ends of the elastic element body towards the magnet along the second direction, and a first fixing part connecting the two extension arms.

[0012] The connector includes a connector body that is fixedly connected to the pole core and spaced apart from the magnet, and a first fixing hole formed therethrough from the connector body at a position corresponding to the first fixing part, wherein the first fixing part passes through the first fixing hole and is fixedly connected to the connector body.

[0013] Preferably, the outer side of the elastic element body is provided with a protruding second fixing part, and the outer shell is provided with a second fixing hole through the second fixing part at the position corresponding to the second fixing part, and the second fixing part extends into the second fixing hole.

[0014] Preferably, the non-metallic elastic element is made of silicone or rubber.

[0015] Preferably, the outer casing includes two side shells that are opposite to each other and spaced apart along the second direction, and two connecting shells that connect the two side shells to opposite ends along the third direction; the iron core and the coil are respectively fixed to the side shells that are close to each other, and the non-metallic elastic element is fixed to the connecting shell.

[0016] Preferably, the side shell is a magnetically conductive structure.

[0017] Secondly, this utility model provides an electronic device, which includes an outer frame and a button motor as described in any of the above embodiments, fixed within the outer frame; the outer side of the outer frame is provided with an inwardly recessed receiving groove, the outer shell is fixed within the receiving groove, and a portion of the button structure is received within the receiving groove and fixedly connected to the vibrator assembly.

[0018] Compared with the prior art, the button motor of this invention has a thinner profile by placing the sensor inside the oscillator assembly, so that the sensor does not occupy additional thickness space; at the same time, the use of non-metallic springs can significantly reduce the space occupied by the springs, and maximize the magnetic circuit size of the button motor within a limited size, so as to make the driving efficiency of the button motor higher. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, wherein:

[0020] Figure 1 A three-dimensional structural diagram of the button motor provided in an embodiment of this utility model;

[0021] Figure 2 An exploded three-dimensional structural diagram of the button motor provided in an embodiment of this utility model;

[0022] Figure 3 For along Figure 1 Cross-sectional view of line AA in the middle;

[0023] Figure 4 For along Figure 1 Cross-sectional view of the middle BB line;

[0024] Figure 5 A schematic diagram of the structure of the non-metallic elastic component of the button motor provided in this embodiment of the utility model;

[0025] Figure 6 A three-dimensional structural schematic diagram of the electronic device provided in an embodiment of this utility model;

[0026] Figure 7 This is an exploded three-dimensional structural diagram of the electronic device provided in an embodiment of the present invention.

[0027] In the diagram, 100 is the button motor, 1 is the outer casing, 11 is the side casing, 12 is the connecting casing, 13 is the second fixing hole, 2 is the stator assembly, 21 is the iron core, 22 is the coil, 3 is the vibrator assembly, 31 is the magnet, 32 is the pole core, 4 is the button, 41 is the button body, 42 is the pressure part, 5 is the non-metallic elastic element, 51 is the elastic element body, 52 is the extension arm, 53 is the first fixing part, 54 is the second fixing part, 6 is the sensor, 7 is the connector, 71 is the connector body, 72 is the first fixing hole, 8 is the flexible circuit board, 200 is the electronic device, 201 is the outer frame, and 202 is the receiving slot. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0029] Combination Figures 1 to 5 As shown, this utility model embodiment provides a button motor 100. The button motor 100 includes a hollow housing 1 with one end, a stator assembly 2 fixed to opposite sides of the housing 1, a vibrator assembly 3 elastically supported at opposite ends of the housing 1, and a button 4 fixed to the vibrator assembly 3 and covered by an opening of the housing 1. The stator assembly 2 drives the vibrator assembly 3 along a first direction (i.e.,...). Figures 1-2 The stator assembly 2 is positioned on the oscillator assembly 3 along the second direction (i.e., the Z-axis). Figures 1-2 The first direction is perpendicular to the first direction. The second direction is perpendicular to the first direction. The first direction includes a magnet 31 and pole cores 32 that are stacked and fixed on opposite sides of the magnet 31 along the first direction. The button 4 is fixed to one of the pole cores 32 on the side away from the magnet 31. The second direction includes two iron cores 21 that are fixed on opposite sides of the outer casing 1 along the second direction and coils 22 that are wound around the iron cores 21.

[0030] The first direction is the vibration direction of the oscillator assembly 3, that is, the direction in which the button 4 is displaced when it is pressed.

[0031] In this embodiment, the outer casing 1 includes two side shells 11 that are opposite to and spaced apart along the second direction, and a third direction (i.e.,) connecting the two side shells 11 respectively. Figures 1-2The two connecting housings 12 at opposite ends of the Y-axis in the middle; the iron core 21 and the coil 22 are respectively fixed to the side of the side housing 11 that are close to each other, and the end of the non-metallic elastic member 5 away from the magnet 31 is fixed to the connecting housing 12.

[0032] In this embodiment, both side shells 11 are magnetically conductive structures, the side shells 11 are U-shaped, and the iron core 21 is fixed to the middle area of ​​the side shells 11 with a tangential design.

[0033] When the coil 22 is energized, both the side housing 11 and the iron core 21 are polarized to generate different magnetic poles, such as... Figure 4 As shown; correspondingly, the pole core 32 vibrates under the force of the side shell 11 and the iron core 21.

[0034] In this embodiment, the button 4 includes a button body 41 and a pressure portion 42 extending from the button body 41 toward the magnet 31. The pressure portion 42 extends to the pole core 32 and is fixedly connected to the pole core 32. The pressure portion 42 includes two parts disposed opposite each other along the long axis of the pole core 32, so that when the button body 41 is subjected to pressure, the force transmitted to the pole core 32 by the pressure portion 42 is more uniform.

[0035] The button motor 100 also includes two non-metallic elastic elements 5 made of non-metallic elastic material and a sensor 6; the two non-metallic elastic elements 5 are respectively connected between the two opposite ends of the vibrator assembly 3 along a third direction and the outer shell 1, the third direction being perpendicular to the second direction and the first direction; the non-metallic elastic elements 5 can generate elastic deformation along the first direction and elastically suspend the vibrator assembly 3 within the outer shell 1; the sensor 6 is fixed to the pole core 32 and is located in the same plane as the magnet 31, the sensor 6 being used to detect the pressing action of the button 4.

[0036] In this embodiment, the non-metallic elastic element 5 is made of silicone or rubber.

[0037] Specifically, since the sensor 6 is placed inside the oscillator assembly 3, the sensor 6 does not occupy additional thickness space, making the thickness of the button 4 motor thinner; at the same time, the use of a non-metallic spring can significantly reduce the space occupied by the spring, and maximize the magnetic circuit size of the button 4 motor within a limited size, making the driving efficiency of the button 4 motor higher.

[0038] In this embodiment, two sensors 6 are disposed on opposite sides of the magnet 31 along the third direction, spaced apart from the magnet 31. The sensors 6 can be piezoresistive sensors or other types. When a press signal is detected, the sensors 6 activate the button 4 motor to provide force feedback based on the detected operation. Furthermore, because the sensors 6 are respectively disposed on opposite sides of the magnet 31 along its long axis, the detection of the press signal is more accurate, resulting in better force feedback from the button 4 motor.

[0039] In this embodiment, the button motor 100 further includes a connector 7, one end of which is fixedly connected to the non-metallic elastic member 5, and the other end is fixedly connected to the vibrator assembly 3.

[0040] In this embodiment, the connector 7 is fixedly connected to the electrode core 32 and spaced apart from the sensor 6.

[0041] In this embodiment, the non-metallic elastic element 5 includes an elastic element body 51, two extension arms 52 formed by bending the two ends of the elastic element body 51 toward the magnet 31, and a first fixing part 53 connecting the two extension arms 52.

[0042] The connector 7 includes a connector body 71 fixedly connected to the pole core 32 and spaced apart from the magnet 31, and a first fixing hole 72 formed through the connector body 71 at a position corresponding to the first fixing part 53. The first fixing part 53 passes through the first fixing hole 72 and is fixedly connected to the connector body 7. This design makes the connection between the non-metallic elastic member 5 and the connector 7 more stable, effectively reduces the space occupied, increases the magnetic circuit size of the button motor 100, and improves the driving efficiency.

[0043] In this embodiment, the outer side of the elastic element body 51 is provided with a protruding second fixing part 54, and the outer shell 1 is provided with a second fixing hole 13 through the second fixing part 54 at the position corresponding to the second fixing part 54, with the second fixing part 54 extending into the second fixing hole 13. This design makes the connection between the non-metallic elastic element 5 and the outer shell 1 more stable, effectively reduces the space occupied, increases the magnetic circuit size of the button motor 100, and makes the driving efficiency better.

[0044] In this embodiment, the button 4 motor further includes a flexible circuit board 8 with one end electrically connected to the coil 22 and the other end electrically connected to the sensor 6. The flexible circuit board 8 is used to energize the coil 22 and make corresponding control commands according to the detection results of the sensor 6.

[0045] Compared with the prior art, the button motor of this utility model has a thinner thickness by placing the sensor inside the vibrator assembly, so that the sensor does not occupy additional thickness space; at the same time, the use of non-metallic spring components can significantly reduce the space occupied by the spring, and maximize the magnetic circuit size of the button motor within a limited size, so as to make the driving efficiency of the button motor higher.

[0046] Example 2

[0047] Please refer to Figures 6-7 This utility model provides an electronic device 200, which includes an outer frame 201 and a button 4 motor as described in any of the above embodiments, fixed in the outer frame 201; the outer side of the outer frame 201 is provided with an inwardly recessed receiving groove 202, the outer shell 1 is fixed in the receiving groove 202, and part of the structure of the button 4 is received in the receiving groove 202 and fixedly connected to the vibrator assembly 3.

[0048] The electronic device 200 can be a mobile phone, AR device, earphone, gamepad, steering wheel, or tablet device that requires button operation.

[0049] Since the electronic device 200 in this embodiment includes the button motor 100 in the first embodiment above, it can also achieve the technical effect achieved by the button motor 100 in the first embodiment above, which will not be described in detail here.

[0050] The above description is merely an embodiment of this utility model. It should be noted that those skilled in the art can make improvements without departing from the inventive concept of this utility model, but these improvements all fall within the protection scope of this utility model.

Claims

1. A button motor, the button motor comprising a hollow housing with an opening, a stator assembly fixed to opposite sides of the housing, an oscillator assembly elastically supported at opposite ends of the housing, and a button fixed to the oscillator assembly by the opening of the housing, the stator assembly driving the oscillator assembly to move along a first direction; the stator assembly being disposed on opposite sides of the oscillator assembly along a second direction and spaced apart from the oscillator assembly; the second direction being perpendicular to the first direction; the oscillator assembly comprising a magnet and pole cores stacked and fixed to opposite sides of the magnet along the first direction, the button being fixed to one of the pole cores on the side away from the magnet; the stator assembly comprising two iron cores fixed to opposite sides of the housing along the second direction and coils wound around the iron cores; characterized in that, The button motor also includes two non-metallic elastic elements made of non-metallic elastic material and a sensor; the two non-metallic elastic elements are respectively connected between the two opposite ends of the oscillator assembly along a third direction and the housing, the third direction being perpendicular to the second direction and the first direction; the non-metallic elastic elements are capable of elastic deformation along the first direction and elastically suspending the oscillator assembly within the housing; the sensor is fixed to the pole core and located in the same plane as the magnet, and the sensor is used to detect the pressing action of the button.

2. The pushbutton motor of claim 1, wherein The sensor includes two sensors, which are disposed on opposite sides of the magnet along the third direction and spaced apart from the magnet.

3. The pushbutton motor of claim 1, wherein The button motor also includes a connector, one end of which is fixedly connected to the non-metallic elastic element, and the other end of which is fixedly connected to the vibrator assembly.

4. The pushbutton motor of claim 3, wherein The connector is fixedly connected to the electrode core and spaced apart from the sensor.

5. The pushbutton motor of claim 3, wherein The non-metallic elastic element includes an elastic element body, two extension arms formed by bending the two ends of the elastic element body towards the magnet in the second direction, and a first fixing part connecting the two extension arms. The connector includes a connector body that is fixedly connected to the electrode core and spaced apart from the sensor, and a first fixing hole formed therethrough from the connector body at a position corresponding to the first fixing part, wherein the first fixing part passes through the first fixing hole and is fixedly connected to the connector body.

6. The pushbutton motor of claim 5, wherein, The outer side of the elastic element body is provided with a protruding second fixing part, and the outer shell is provided with a second fixing hole through it corresponding to the position of the second fixing part, and the second fixing part extends into the second fixing hole.

7. The pushbutton motor of claim 1, wherein The non-metallic elastic element is made of silicone or rubber.

8. The pushbutton motor of claim 1, wherein The outer casing includes two side shells that are opposite to each other and spaced apart along the second direction, and two connecting shells that connect the two side shells at opposite ends along the third direction; the iron core and the coil are respectively fixed to the side shells on the side shells that are close to each other, and the non-metallic elastic element is fixed to the connecting shell.

9. The pushbutton motor of claim 8, wherein, The side shell is a magnetically conductive structure.

10. An electronic device, comprising: The electronic device includes an outer frame and a button motor as described in any one of claims 1-9 fixed within the outer frame; the outer side of the outer frame is provided with an inwardly recessed receiving groove, the outer shell is fixed within the receiving groove, and a portion of the button structure is received within the receiving groove and fixedly connected to the vibrator assembly.

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