Actuator, electronic device and method

Abstract

The present invention relates to an exciter, an electronic device and a method, the exciter includes a vibrator assembly, a stator assembly and a fixture, the vibrator assembly includes an upper shell and a magnetic assembly, the upper shell has a semi-enclosed cavity, the magnetic assembly is fixed in the cavity, the magnetic assembly forms a magnetic gap, the stator assembly includes a lower shell and a coil arranged on the lower shell, a part of the coil extends into the magnetic gap, the coil is spaced from the magnetic assembly, the fixture extends into the gap between the coil and the magnetic assembly, and positions the magnetic assembly and the coil. The exciter provided by the embodiment of the present invention eliminates the problem of relative displacement between the vibrator assembly and the stator assembly, improves the accuracy of the exciter assembly, and avoids the vibrator and the stator from rubbing against each other during vibration.

Description

Technical Field

[0001] The present invention relates to the technical field of sound generating devices, and more specifically, to an exciter, an electronic device and a method. Background Art

[0002] With the widespread application of 5G technology, people are pursuing the ultimate network experience while their expectations for full-screen mobile phones are rising. As a result, the direct-drive screen sound exciter is increasingly widely used. Since the direct-drive screen sound exciter will inevitably have assembly errors during the assembly of components and the assembly of the whole machine, the existence of tolerances will cause the vibrator and stator of the exciter to rub against each other, thus affecting the overall performance and service life of the product.

[0003] Therefore, it is necessary to provide a new technical solution to solve at least one of the above technical problems. Summary of the invention

[0004] An object of the present invention is to provide a new technical solution for an actuator, an electronic device and an assembly method of the electronic device.

[0005] One aspect of the present invention provides an exciter, including a vibrator assembly, a stator assembly and a fixture, the vibrator assembly including an upper shell and a magnetic assembly, the upper shell having a semi-enclosed cavity, the magnetic assembly being fixed in the cavity, the magnetic assembly forming a magnetic gap, the stator assembly including a lower shell and a coil arranged on the lower shell, a portion of the coil extending into the magnetic gap, the coil being spaced apart from the magnetic assembly, the fixture extending into the gap between the coil and the magnetic assembly, and positioning the magnetic assembly and the coil.

[0006] Optionally or alternatively, two opposite sides of the coil are spaced apart from the magnetic component, and the fixture extends between the two opposite sides of the coil and the magnetic component.

[0007] Optionally or alternatively, the fixture comprises at least one first U-shaped frame, two arms of the first U-shaped frame respectively extending into opposite sides of the coil.

[0008] Optionally or alternatively, the fixture includes two first U-shaped frames, and the two first U-shaped frames are respectively distributed in the long side direction of the coil.

[0009] Optionally or alternatively, two of the first U-shaped frames are connected together.

[0010] Optionally or alternatively, the fixture comprises a second U-shaped frame, two arms of the second U-shaped frame being arranged on the same side of the coil.

[0011] Optionally or alternatively, the fixture comprises two second U-shaped frames, and the two second U-shaped frames are respectively located on two opposite sides of the coil.

[0012] Optionally or alternatively, two of the second U-shaped frames are connected together.

[0013] Optionally or alternatively, the lower shell has a through hole, and the clamp passes through the through hole from a side of the lower shell opposite to the coil and extends into the gap.

[0014] Another aspect of the present invention provides an electronic device, comprising a device body and the above-mentioned exciter, wherein the exciter is arranged in the device body.

[0015] Optionally or alternatively, the device body includes a screen and a device housing, the screen is arranged on the device housing, one of the stator assembly and the vibrator assembly is fixed to the screen, and the other is fixed to the housing.

[0016] Another aspect of the present invention also provides a method for assembling the electronic device, comprising: arranging the exciter in the device body;

[0017] Take out the fixture described above.

[0018] In the exciter provided in the embodiment of the present invention, since the fixture extends into the gap between the coil and the magnetic component during assembly, during the assembly of the exciter, the vibrator assembly, the stator assembly and the fixture are pressed against each other for positioning, thereby eliminating the problem of relative displacement between the vibrator assembly and the stator assembly, improving the assembly accuracy of the exciter assembly, and avoiding the vibrator assembly and the stator assembly from rubbing against each other during vibration.

[0019] Further features and advantages of the present invention will become apparent from the following detailed description of exemplary embodiments of the present invention with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings, which constitute a part of the specification, illustrate embodiments of the present invention and, together with the description, serve to explain the principles of the present invention.

[0021] Figure 1 It is a schematic side sectional structural diagram of an exciter according to an embodiment of the present invention.

[0022] Figure 2 It is a schematic side structural diagram of an actuator according to an embodiment of the present invention.

[0023] Figure 3 It is a schematic diagram of the front view structure of the actuator according to an embodiment of the present invention.

[0024] Figure 4is an exploded view of an exciter according to an embodiment of the present invention.

[0025] Figure 5 It is a schematic diagram of the three-dimensional structure of the exciter according to an embodiment of the present invention.

[0026] Figure 6 It is a schematic diagram of the three-dimensional structure of the second embodiment of the clamp according to the embodiment of the present invention.

[0027] Figure 7 It is a schematic diagram of the three-dimensional structure of the third implementation mode of the clamp according to the embodiment of the present invention.

[0028] Figure 8 It is a side structural schematic diagram of a third implementation manner of the clamp according to an embodiment of the present invention.

[0029] Fig. 9 It is a schematic diagram of the three-dimensional structure of a fourth embodiment of the clamp according to an embodiment of the present invention.

[0030] Description of reference numerals:

[0031] 1-fixture, 11-first U-shaped frame, 12-second U-shaped frame, 2-upper shell, 3-vibrator assembly, 31-first magnetic assembly, 32-second magnetic assembly, 4-lower shell, 41-through hole, 5-coil, 6-washer. DETAILED DESCRIPTION

[0032] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that the relative arrangement of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention unless otherwise specifically stated.

[0033] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.

[0034] Techniques and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the techniques and equipment should be considered part of the specification.

[0035] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0036] It should be noted that like reference numerals and letters refer to similar items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0037] like Figures 1 to 6As shown, an embodiment of the present invention discloses an exciter, including a vibrator assembly, a stator assembly and a fixture 1.

[0038] The vibrator assembly includes an upper shell 2 and a magnetic assembly 3. The upper shell 2 has a semi-enclosed cavity, and the magnetic assembly 3 is fixed in the cavity.

[0039] For example, the magnetic component 3 is glued in the cavity of the upper shell 2. Of course, the connection between the magnetic component 3 and the upper shell 2 is not limited to gluing, and those skilled in the art can flexibly select the fixing method of the magnetic component 3 according to actual needs.

[0040] The magnetic assembly 3 forms a magnetic gap, and the stator assembly includes a lower shell 4 and a coil 5 disposed on the lower shell 4. A portion of the coil 5 extends into the magnetic gap, and the coil 5 is spaced from the magnetic assembly 3. The fixture 1 extends into the gap between the coil 5 and the magnetic assembly 3, and positions the magnetic assembly 3 and the coil 5.

[0041] When assembling the actuator provided by the embodiment of the present invention, the magnetic component 3 is fixed in the cavity of the upper shell 2 .

[0042] A portion of the coil 5 is extended into the cavity of the upper shell 2. After power is supplied, the magnetic field of the coil 5 and the magnetic field of the magnetic component 3 interact with each other to form a driving force.

[0043] The other part of the coil 5 is fixed to the lower shell 4 by gluing. Of course, the connection between the coil 5 and the lower shell 4 is not limited to gluing, and those skilled in the art can flexibly select the fixing method of the coil 5 and the lower shell 4 according to actual needs. The lower shell 4 is a sheet structure, and the coil 5 is fixed in the middle of the lower shell 4.

[0044] The lead wires of the coil 5 are connected to an external circuit.

[0045] Of course, the other part of the coil 5 can also be directly bonded to one side of the circuit board, and the other side of the circuit board is connected to the lower shell 4. The fixing method of the coil 5 and the lower shell 4 is not limited to the above embodiment, and those skilled in the art can flexibly select the fixing method of the coil 5 and the lower shell 4 according to actual needs.

[0046] Insert the fixture 1 into the gap between the coil 5 and the magnetic component 3 so that the vibrator component 3 and the coil 5 of the stator component and the fixture 1 are pressed against each other for positioning. The fixture 1 can prevent the position of the coil 5 and the magnetic component 3 from moving during the subsequent assembly process. When the fixture 1 is inserted into the gap, the coil 5 and the magnetic component 3 are pressed against each other. 3 forms a resisting force. This resisting force causes the coil 5 to be stuck, and the vibrator assembly and the stator assembly are fixed together.

[0047] For example, the material of the fixture 1 can be metal or non-metal. The shape of the fixture 1 can be any one of sheet, column, and polygon.

[0048] Finally, the lower shell 4 is connected to the vibrator assembly 3 through an elastic member (not shown in the figure). The elastic member is a spring, a spring or an elastic rubber member.

[0049] For example, the vibrator assembly 3 and the washer 6 are connected by adhesive, and the lower shell 4 is connected to the washer 6 through an elastic member, so that the vibrator assembly 3 is suspended on the stator assembly.

[0050] In the exciter provided in the embodiment of the present invention, the vibrator assembly and the stator assembly are fixedly connected by a fixture. During assembly, the exciter is assembled as a whole, and the vibrator assembly and the stator assembly are respectively installed at set positions. Due to the positioning function of the fixture, the vibrator assembly and the stator assembly will not move during the assembly process, thereby greatly improving the assembly accuracy of the exciter and avoiding the vibrator and the stator from rubbing against each other during vibration.

[0051] In addition, the fixture 1 also avoids the occurrence of asymmetry between the two sides of the coil 5, improves the overall stability of the exciter, and prolongs the service life of the exciter.

[0052] In one embodiment, two opposite sides of the coil 5 are spaced apart from the magnetic component 3 , and the fixture 1 extends between the two opposite sides of the coil 5 and the magnetic component 3 .

[0053] For example, the magnetic component 3 includes a first magnetic component 31 and a second magnetic component 32, the coil 5 is located between the first magnetic component 31 and the second magnetic component 32, and the opposite sides of the coil 5 are respectively spaced from the first magnetic component 31 and the second magnetic component 32, and the fixture 1 extends into the gaps on both sides of the coil 5, so that the first magnetic component 31, the second magnetic component 32, the fixture 1 and the coil 5 are abutted against each other, thereby positioning them.

[0054] like Figure 4 As shown, the first magnetic component 31 and the second magnetic component 32 each include two magnets, and the two magnets are arranged in the vibration direction to form a magnetic circuit. The first magnetic component 31 and the second magnetic component are respectively opposite to the two long sides of the coil 5. This makes the driving force on the coil 5 maximum.

[0055] In one embodiment, the fixture 1 includes at least one first U-shaped frame 11, and two arms of the first U-shaped frame 11 extend into opposite sides of the coil 5 respectively, and the inner sides of the two arms of the first U-shaped frame 11 are in seamless contact with opposite sides of the coil 5 respectively, so that both sides of the coil 5 can be accurately positioned.

[0056] like Figure 3As shown, in one embodiment, the fixture 1 includes two first U-shaped frames 11, and the two first U-shaped frames 11 are respectively distributed in the long side direction of the coil 5. The long side of the coil 5 has a larger size, and by providing multiple first U-shaped frames 11, the overall positioning of the coil 5 can be more accurate.

[0057] Of course, the two first U-shaped frames 11 may also be distributed in the width direction of the coil 5. Those skilled in the art may flexibly arrange the first U-shaped frames 11 at the positions of the coil 5 according to actual needs.

[0058] like Figure 6 As shown, in one embodiment, two first U-shaped frames 11 are connected together. When assembling the fixture 1, multiple positions of the coil 5 are positioned at the same time. This structure can effectively shorten the time for installing the fixture 1 and improve assembly efficiency.

[0059] like Figure 7 As shown, in one embodiment, the fixture 1 includes a second U-shaped frame 12, and two arms of the second U-shaped frame 12 are arranged on the same side of the coil 5. The two arms of the fixture 1 are inserted into the same side of the coil 5. When inserting, the operator can easily observe the relative positions of the two arms, so that the insertion of the fixture 1 is easier.

[0060] For example, both arms of the second U-shaped frame 12 extend into the gap between one side of the coil 5 and the magnetic component 3 .

[0061] like Figure 7 and Figure 8 As shown, in one embodiment, the fixture 1 includes two second U-shaped frames 12 , and the two second U-shaped frames 12 are respectively located on two opposite sides of the coil 5 .

[0062] For example, two opposite sides of the coil 5 are spaced apart from the first magnetic component 31 and the second magnetic component 32 , respectively, and the two second U-shaped frames 12 extend into the space between the two sides, respectively.

[0063] like Fig. 9 As shown, in one embodiment, two of the second U-shaped frames 12 are connected together, and when the fixture 1 is assembled, positioning is formed at multiple locations of the coil 5 at the same time. This structure can effectively shorten the time for installing the fixture 1 and improve assembly efficiency.

[0064] like Figure 4 As shown, in one embodiment, the lower shell 4 has a through hole 41, and the fixture 1 passes through the through hole 41 from the side of the lower shell 4 opposite to the coil 5 and extends into the gap. After the exciter is assembled into the electronic device, the fixture 1 is removed from the outside of the lower shell. The through hole 41 makes it easy to install and remove the fixture.

[0065] For example, the through holes 41 are two large holes, each of which allows the entire first U-shaped frame 11 to extend therein.

[0066] For example, the through holes 41 are four small holes, each of which allows one of the arms of the first U-shaped frame 11 to extend therethrough.

[0067] The number of through holes 41 is not limited to the above, and those skilled in the art can flexibly set the number and positions of the through holes 41 according to actual needs.

[0068] In addition, the through hole 41 of the lower shell 4 can also be used to insert a detection device to detect the position of the overall magnetic gap of the exciter, thereby improving the consistency of assembly.

[0069] The embodiment of the present invention further discloses an electronic device, comprising a device body and the above-mentioned exciter, wherein the above-mentioned exciter is arranged in the device body.

[0070] The electronic device disclosed in this embodiment includes any one of a mobile phone, a tablet computer, a laptop computer, a game console, and a vibration device. The electronic device disclosed in the present invention has the above-mentioned exciter. The overall stability of the electronic device is high and the service life is long.

[0071] In one embodiment, the device body includes a screen and a device housing, the screen is arranged on the device housing, one of the stator assembly and the vibrator assembly is fixed on the screen, and the other is fixed on the housing.

[0072] The screen sound-emitting device disclosed in this embodiment has the above-mentioned exciter, and the vibrator component and the stator component avoid collision during vibration, thereby achieving the effect of high-quality screen sound without noise.

[0073] The embodiment of the present invention also discloses an assembly method of an electronic device, comprising: arranging the actuator in the device body;

[0074] The fixture 1 is taken out.

[0075] For example, the electronic device is a screen sound device, the upper shell of the vibrator assembly is connected to the screen, and then the lower shell of the stator assembly is connected to the housing of the screen sound device, and finally the fixture 1 is taken out. Since the fixture 1 is finally taken out after the vibrator assembly and the stator assembly have been positioned, the vibrator assembly and the stator assembly will not move during the assembly process, thereby greatly improving the assembly accuracy of the exciter and avoiding the vibrator and the stator from rubbing against each other during vibration. The screen sound device has high overall stability and long service life.

[0076] Although some specific embodiments of the present invention have been described in detail by way of example, it will be appreciated by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present invention. It will be appreciated by those skilled in the art that the above embodiments may be modified without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. An exciter, characterized in that: It includes a vibrator assembly, a stator assembly and a fixture. The vibrator assembly includes an upper shell and a magnetic assembly. The upper shell has a semi-enclosed cavity. The magnetic assembly is fixed in the cavity. The magnetic assembly forms a magnetic gap. The stator assembly includes a lower shell and a coil arranged on the lower shell. A part of the coil extends into the magnetic gap. The coil is spaced from the magnetic assembly. The fixture extends into the gap between the coil and the magnetic assembly to position the magnetic assembly and the coil.

2. The exciter according to claim 1, characterized in that: The two opposite sides of the coil are spaced apart from the magnetic component, and the clamp extends between the two opposite sides of the coil and the magnetic component.

3. The actuator according to claim 2, characterized in that: The fixture comprises at least one first U-shaped frame, and two arms of the first U-shaped frame extend into opposite sides of the coil respectively.

4. The actuator according to claim 3, characterized in that: The fixture includes two first U-shaped frames, and the two first U-shaped frames are respectively distributed in the long side direction of the coil.

5. The actuator according to claim 4, characterized in that: The two first U-shaped frames are connected together.

6. The exciter according to claim 2, characterized in that: The fixture comprises a second U-shaped frame, and two arms of the second U-shaped frame are arranged on the same side of the coil.

7. The exciter according to claim 6, characterized in that: The fixture includes two second U-shaped frames, and the two second U-shaped frames are respectively located on two opposite sides of the coil.

8. The actuator according to claim 7, characterized in that: The two second U-shaped frames are connected together.

9. The exciter according to any one of claims 1 to 8, characterized in that: The lower shell has a through hole, and the clamp passes through the through hole from a side of the lower shell opposite to the coil and extends into the gap.

10. An electronic device, characterized in that: It comprises a device body and an exciter as described in any one of claims 1 to 9, wherein the exciter is arranged in the device body.

11. The electronic device according to claim 10, characterized in that: The device body comprises a screen and a device housing, wherein the screen is arranged on the device housing, and one of the stator assembly and the vibrator assembly is fixed on the screen, and the other is fixed on the housing.

12. An assembly method of an electronic device according to claim 10 or 11, characterized in that: The method comprises: arranging the actuator in the device body; The fixture is taken out.

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