Button motor and electronic device

Abstract

Disclosed in the present invention are a button motor and an electronic device. The button motor comprises a hollow housing, stators fixed to two opposite sides of the housing, a vibrator with two ends respectively elastically supported at two opposite ends of the housing, and a button fixed to the vibrator, wherein the vibrator comprises magnetic steel and pole cores which are respectively fixedly stacked on two opposite sides of the magnetic steel; and the stators comprise two iron cores respectively fixed to the two opposite sides of the housing, and coils wound around the iron cores. The button motor further comprises two non-metallic elastic members respectively fixed to the two opposite ends of the housing, wherein the two non-metallic elastic members are both further fixedly connected to the vibrator. In the button motor of the present invention, the space occupied by the elastic members after installation can be reduced by means of a non-metallic elastic design and an integrated design with the non-metallic elastic members, such that the size of a magnetic circuit of the button motor is increased as much as possible under the same structural dimensions, thereby ensuring same has sufficient driving force.

Description

Button motors and electronic components Technical Field

[0001] This invention relates to the field of button technology, and more particularly to a button motor and electronic device. 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.

[0004] In related technologies, the oscillator is elastically supported on the outer shell by a metal elastic element. Although this design increases the structural strength of the elastic element, it also increases the space occupied by the metal properties of the elastic element. This will reduce the magnetic circuit size of the touch button under the same structure, resulting in insufficient driving force.

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

[0006] The purpose of this invention is to provide a button motor and electronic device to solve the problem in related technologies where the vibrator is elastically supported on the outer shell by a metal elastic element, which leads to an increase in the space occupied by the elastic element. Technical solutions

[0007] In a first aspect, the present invention provides a button motor, comprising a hollow housing, a stator fixed to opposite sides of the housing, an oscillator elastically supported at opposite ends of the housing, and a button fixed to the oscillator. The oscillator is spaced apart from the stator and moves relative to the stator along a first direction. The oscillator includes a magnet and pole pieces stacked and fixed to opposite sides of the magnet along the first direction. The button is fixed to one of the pole pieces on the side away from the magnet. The stator includes two iron cores fixed to opposite sides of the housing and a coil wound around the iron cores.

[0008] The button motor also includes two non-metallic elastic elements fixed to opposite ends of the housing. The non-metallic elastic elements are capable of deformation along the first direction. The two non-metallic elastic elements are also fixedly connected to the vibrator and elastically suspend the vibrator inside the housing.

[0009] Preferably, the button motor further includes a connector integrally formed with the non-metallic elastic element, the connector being disposed on the side of the non-metallic elastic element near the vibrator and forming a fixed connection with the vibrator.

[0010] Preferably, the connector is fixed to the pole core and spaced apart from the magnet.

[0011] Preferably, the non-metallic elastic member has a groove recessed in the direction away from the magnet on the side near the magnet, and the connector is formed in the groove.

[0012] Preferably, the non-metallic elastic element is integrally formed with the oscillator.

[0013] Preferably, the non-metallic elastic element is made of silicone or rubber.

[0014] Preferably, the outer side of the non-metallic elastic element is provided with a protruding and extending fixing part, and the outer shell is provided with a fixing hole through the fixing part at the position corresponding to the fixing part, and the fixing part extends into the fixing hole.

[0015] Preferably, the outer casing includes two side shells that are opposite to each other and spaced apart and parallel to their long axis, and a first end cap and a second end cap that respectively connect the opposite ends of the two side shells; the iron core is respectively fixed to the side of the two side shells that are close to each other, and the two non-metallic elastic elements are respectively fixed to the first end cap and the second end cap.

[0016] Preferably, both side shells are flat; or,

[0017] Both of the side shells are magnetically conductive and are U-shaped.

[0018] Preferably, the button includes a main body portion spaced apart from and opposite to the outer casing, and a first connecting portion and a second connecting portion protruding from the main body portion near the pole core. The first connecting portion and the second connecting portion extend into the outer casing and are respectively fixed to the pole core.

[0019] Secondly, the present invention provides an electronic device comprising an outer frame and a button motor as described above housed within the outer frame. The outer frame has an inwardly recessed receiving groove on its outer side, and the bottom of the receiving groove has a through hole therethrough. The outer shell is fixed to the inner side of the outer frame, and a portion of the button structure is housed in the receiving groove and fixed to the vibrator through the through hole. Beneficial effects

[0020] Compared with related technologies, the button motor of the present invention has two non-metallic elastic elements that are fixed to opposite ends of the housing and can deform along a first direction. The two non-metallic elastic elements also elastically suspend the vibrator inside the housing. In this way, the space occupied by the elastic elements after installation can be reduced by using the non-metallic elastic design, so that the magnetic circuit size of the button motor can be increased as much as possible under the same size structure, thereby making its driving force sufficient. Attached Figure Description

[0021] 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:

[0022] Figure 1 is a three-dimensional structural diagram of the button motor provided in Embodiment 1 of the present invention;

[0023] Figure 2 is an exploded view of the key motor provided in Embodiment 1 of the present invention;

[0024] Figure 3 is a schematic diagram of the structure of the button motor after removing the button according to Embodiment 1 of the present invention;

[0025] Figure 4 is a cross-sectional view of line AA in Figure 1;

[0026] Figure 5 is a cross-sectional view of line BB in Figure 1;

[0027] Figure 6 is a three-dimensional structural diagram of the button motor with button removal and mounting part provided in Embodiment 2 of the present invention;

[0028] Figure 7 is a cross-sectional view of line CC in Figure 6;

[0029] Figure 8 is a three-dimensional structural diagram of the button motor with button removal and mounting part provided in Embodiment 3 of the present invention;

[0030] Figure 9 is an exploded view of the key motor and mounting part provided in Embodiment 3 of the present invention, showing the removal of the key and mounting part.

[0031] Figure 10 is a cross-sectional view of line DD in Figure 8;

[0032] Figure 11 is a three-dimensional structural diagram of the electronic device provided in Embodiment 3 of the present invention;

[0033] Figure 12 is a structural exploded view of the electronic device provided in Embodiment 3 of the present invention.

[0034] Among them, 100 is the button motor; 1 is the outer shell; 11 is the side shell; 12 is the first end cover; 13 is the second end cover; 14 is the fixing hole; 2 is the stator; 21 is the iron core; 22 is the coil; 3 is the vibrator; 31 is the magnet; 32 is the pole core; 4 is the button; 41 is the main body; 42 is the first connecting part; 43 is the second connecting part; 44 is the guide; 5 is the non-metallic elastic part; 51 is the groove; 52 is the fixing part; 6 is the connector; 7 is the mounting part; 71 is the mounting hole; 200 is the electronic component; 201 is the outer frame; 202 is the receiving slot; 203 is the perforation. 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 some embodiments of the present invention, and not all embodiments. 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] This invention provides a button motor 100, as shown in Figures 1 to 5. It includes a hollow outer shell 1, a stator 2 fixed to opposite sides of the outer shell 1, an oscillator 3 elastically supported at opposite ends of the outer shell 1, and a button 4 fixed to the oscillator 3. The oscillator 3 is spaced apart from the stator 2 and moves relative to the stator 2 along a first direction. The oscillator 3 includes a magnet 31 and pole cores 32 stacked and fixed to 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 stator 2 includes two iron cores 21 fixed to opposite sides of the outer shell 1 and a coil 22 wound around the iron cores 21.

[0038] The first direction is the direction of vibration of the oscillator 3, that is, the direction in which the button 4 is displaced when the button 4 is pressed.

[0039] The outer casing 1 includes two side shells 11 that are opposite to each other and spaced apart and parallel to their long axis direction, and a first end cap 12 and a second end cap 13 that connect the opposite ends of the two side shells 11 respectively; the iron core 21 is fixed to the side of the two side shells 11 that are close to each other.

[0040] Both the first end cap 12 and the second end cap 13 have mounting portions 7 on their opposite sides, and each mounting portion 7 has a through mounting hole 71. This design allows the button motor 100 to be mounted to other devices by passing screws or rivets through the mounting holes 71.

[0041] In this embodiment, both side shells 11 are magnetically conductive and are U-shaped respectively; two iron cores 21 are fixed in the middle area of ​​the side shells 11 and are arranged opposite each other; the first end cap 12 and the second end cap 13 are both U-shaped.

[0042] When the coil 22 is energized, both the side shell 11 and the iron core 21 are polarized to generate different magnetic poles, as shown in Figure 5; correspondingly, the pole core 32 vibrates under the force of the side shell 11 and the iron core 21.

[0043] The button 4 includes a main body 41 spaced apart from and opposite to the outer casing 1, and a first connecting part 42 and a second connecting part 43 protruding from the side of the main body 41 near the vibrator 3. The first connecting part 42 and the second connecting part 43 extend into the outer casing 1 and are respectively fixed to the pole core 32.

[0044] In addition, the button motor 100 also includes guide members 44 respectively sleeved on the first connecting portion 42 and the second connecting portion 43. This design allows the guide members 44 to be mounted on the frame of the electronic device 200 to guide the first connecting portion 42 and the second connecting portion 43.

[0045] Specifically, the button motor 100 also includes two non-metallic elastic elements 5 fixed to both ends of the housing 1 and a connector 6 integrally formed with the non-metallic elastic elements 5. The non-metallic elastic elements 5 can deform along the first direction. The connector 6 is connected to the pole core 32 and spaced apart from the magnet 31. The connector 6 suspends the vibrator 3 inside the housing 1.

[0046] Among them, the non-metallic elastic component 5 is made of silicone or rubber, and the outer shell 1 and the connector 6 are both made of metal materials, such as stainless steel, aluminum alloy, etc. The non-metallic elastic component 5 is integrally injection molded with the outer shell 1 and the connector 6 respectively; the non-metallic elastic component 5 and the connector 6 are both in block shape.

[0047] Two non-metallic elastic elements 5 are fixed to the first end cap 12 and the second end cap 13, respectively.

[0048] The middle area of ​​the connector 6 near the magnet 31 protrudes and extends between the two pole cores 32.

[0049] The magnet 31 is magnetized by the two pole cores 32 on opposite sides being magnetized into different magnetic poles, namely N pole and S pole, as shown in Figure 5.

[0050] The outer side of the non-metallic elastic member 5 is provided with a protruding and extending fixing part 52, and the outer shell 1 is provided with a fixing hole 14 through it corresponding to the fixing part 52, and the fixing part 52 extends into the fixing hole 14.

[0051] In this embodiment, fixing holes 14 are provided on the first end cap 12 and the second end cap 13 of the outer casing 1; the non-metallic elastic member 5 is provided with fixing parts 52 on all sides except those near the vibrator 3, and correspondingly, the first end cap 12 and the second end cap 13, which are U-shaped, are provided with fixing holes 14 at the positions corresponding to the fixing parts 52.

[0052] The non-metallic elastic element 5 has a groove 51 recessed towards the magnet 31 on the side closest to it, and the connector 6 is formed within the groove 51. This design can further reduce the space occupied by the non-metallic elastic element 5 and the connector 6.

[0053] In this embodiment, since the magnet 31 and pole core 32 of the oscillator 3 are not easily integrally injection molded with the non-metallic elastic component 5, the addition of the connector 6 makes it easier to integrally injection mold the non-metallic elastic component 5 with the oscillator 3. Of course, without adding the connector 6, the oscillator 3 and the non-metallic elastic component 5 can also be integrally injection molded by applying a silicone primer.

[0054] In this embodiment, the button motor 100 is also designed with a flexible circuit board (not shown) electrically connected to the coil 22 and a sensor (not shown) electrically connected to the flexible circuit board, according to actual needs. The sensor is used to detect the pressure position and pressure of the button 4, and the flexible circuit board is used to energize the coil 22 and make corresponding control commands according to the detection results of the sensor.

[0055] Compared with related technologies, the button motor 100 of this embodiment is designed with two non-metallic elastic members 5 respectively fixed at opposite ends of the housing 1, and the non-metallic elastic members 5 can deform along the first direction. The two non-metallic elastic members 5 also elastically suspend the vibrator 3 inside the housing 1. In this way, the space occupied by the elastic members after installation can be reduced by the non-metallic elastic design, so that the button motor 100 can maximize its magnetic circuit size under the same size structure, thereby making its driving force sufficient.

[0056] Example 2

[0057] Referring to Figures 6 and 7, the button motor 100 in this embodiment differs from the button motor 100 in Embodiment 1 in that both side housings 11 are flat and not magnetically conductive. In this case, the main magnetized component is the iron core 21, and its magnetized poles are shown in Figure 7. This design allows the outer casing 1 to be bend-free, facilitating its production.

[0058] Example 3

[0059] Referring to Figures 8 to 10, the button motor 100 in this embodiment differs from the button motor 100 in Embodiment 1 or Embodiment 2 in that the button motor 100 in this embodiment does not have a connecting member 6. That is, two non-metallic elastic members 5 are respectively fixedly connected to the vibrator 3, and the vibrator 3 is elastically suspended in the outer shell 1.

[0060] The non-metallic elastic component 5 is integrally molded with the oscillator 3, meaning that the non-metallic elastic component 5 can be integrally injection molded with the oscillator 3 by applying a silicone primer. Specifically, the non-metallic elastic component 5 is integrally injection molded with the magnet 31 and pole core 32 of the oscillator 3. Of course, depending on actual needs, the non-metallic elastic component 5 can also be fixedly connected to the magnet 31 and pole core 32 of the oscillator 3 by gluing (adhesive bonding).

[0061] Based on the groove 51 provided in the non-metallic elastic element 5, the ends of the magnet 31 and the pole core 32 are directly fixed in the groove 51.

[0062] The button motor 100 in this embodiment can reduce the number of parts used and further improve its magnetic circuit size.

[0063] Example 4

[0064] This embodiment provides an electronic device 200, as shown in Figures 11 and 12. It includes an outer frame 201 and a button motor 100, as described in Embodiment 1 or Embodiment 2, housed within the outer frame 201. The outer side of the outer frame 201 is provided with an inwardly recessed receiving groove 202, and the bottom of the receiving groove 202 is provided with a through hole 203. The outer shell 1 is fixed to the inner side of the outer frame 201. A portion of the button 4 is housed in the receiving groove 202 and passes through the through hole 203 to be fixed to the vibrator 3.

[0065] Among them, part of the main body 41 of the button 4 is housed in the receiving groove 202, and the first connector 6 and the second connector 6 of the button 4 are fixed to the pole core 32 through two through holes 203 provided in the receiving groove 202 respectively.

[0066] When the first connector 6 and the second connector sleeve are equipped with guides 44, the guides 44 are fixed inside the through hole 203.

[0067] Electronic device 200 refers to devices that require button operation in scenarios such as mobile phones, AR, headphones, game controllers, steering wheels, and tablets.

[0068] Since the electronic device 200 in this embodiment includes the button motor 100 in the first or second embodiment described above, it can also achieve the technical effects achieved by the button motor 100 in the first or second embodiment described above, and will not be described in detail here.

[0069] 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 push-button motor, comprising a hollow housing, a stator fixed to opposite sides of the housing, an oscillator elastically supported at opposite ends of the housing, and a push-button fixed to the oscillator, wherein the oscillator is spaced apart from the stator and moves relative to the stator along a first direction; the oscillator includes a magnet and pole pieces stacked and fixed to opposite sides of the magnet along the first direction, the push-button being fixed to one of the pole pieces away from the magnet; the stator includes two iron cores fixed to opposite sides of the housing and a coil wound around the iron cores; characterized in that, The button motor also includes two non-metallic elastic elements fixed to opposite ends of the housing. The non-metallic elastic elements are capable of deformation along the first direction. The two non-metallic elastic elements are also fixedly connected to the vibrator and elastically suspend the vibrator inside the housing.

2. The button motor as described in claim 1, characterized in that, The button motor also includes a connector integrally formed with the non-metallic elastic element. The connector is located on the side of the non-metallic elastic element close to the vibrator and is fixedly connected to the vibrator.

3. The button motor as described in claim 2, characterized in that, The connector is fixed to the pole core and spaced apart from the magnet.

4. The button motor as described in claim 2, characterized in that, The non-metallic elastic element has a groove recessed on the side near the magnet, and the connector is formed in the groove.

5. The button motor as described in claim 1, characterized in that, The non-metallic elastic element is integrally formed with the oscillator.

6. The button motor as described in claim 1, characterized in that, The non-metallic elastic element is made of silicone or rubber.

7. The button motor as described in claim 1, characterized in that, The non-metallic elastic element has a protruding and extending fixing part on its outer side, and the outer shell has a fixing hole through it corresponding to the position of the fixing part, with the fixing part extending into the fixing hole.

8. The button motor as described in claim 1, characterized in that, The outer casing includes two side shells that are opposite to each other and spaced apart and parallel to their long axis, and a first end cap and a second end cap that connect the opposite ends of the two side shells respectively; the iron core is fixed to the side of the two side shells that are close to each other, and the two non-metallic elastic elements are fixed to the first end cap and the second end cap respectively.

9. The button motor as described in claim 8, characterized in that, Both of the aforementioned side shells are flat; or, Both of the side shells are magnetically conductive and are U-shaped.

10. The button motor as described in claim 1, characterized in that, The button includes a main body portion spaced apart from and opposite to the outer casing, and a first connecting portion and a second connecting portion extending from the main body portion near the pole core. The first connecting portion and the second connecting portion extend into the outer casing and are respectively fixed to the pole core.

11. An electronic device, characterized in that, The electronic device includes an outer frame and a button motor as described in claim 1 housed within the outer frame. The outer frame has an inwardly recessed receiving groove on its outer side, and the bottom of the receiving groove has a through hole. The outer shell is fixed to the inner side of the outer frame, and a portion of the button structure is housed in the receiving groove and fixed to the vibrator through the through hole.

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