A bidirectional vibration motor and its implementation method

Abstract

The present invention discloses a bidirectional vibration motor, comprising a Z-direction vibration motor, the Z-direction vibration motor comprising an outer shell, an X-direction vibration motor disposed within the outer shell, the X-direction vibration motor comprising a housing, a lower bracket disposed at the bottom of the housing, the housing being connected to the outer shell on both sides via Z-direction springs, the top surface of the housing and the bottom surface of the lower bracket being connected to a Z-direction magnetic steel group, the outer shell being provided with a Z-direction FPC board, the Z-direction FPC board being connected to two Z-direction drive coils corresponding to the Z-direction magnetic steel groups. The present invention also discloses a method for implementing a bidirectional vibration motor. The present invention utilizes the X-direction vibration motor as the vibrator of the Z-direction vibration motor, divides it into two drive systems, and simultaneously energizes the X-direction drive coil and the Z-direction drive coil. When energized, the electric and magnetic fields interact, thereby achieving bidirectional vibration output.

Description

Technical Field

[0001] The present invention belongs to the technical field of micro motors, and in particular relates to a bidirectional vibration motor and an implementation method thereof. Background Art

[0002] Micro vibration motors are indispensable components in electronic products such as mobile phones, tablet computers, and handheld game consoles, providing tactile feedback to users.

[0003] Mobile consumer electronics currently on the market generally use vibration motors as system feedback components, such as incoming call notifications on mobile phones and vibration feedback on gaming consoles. Compared to traditional rotor motors, linear motors offer significant advantages in vibration characteristics, response time, lifespan, and noise reduction.

[0004] However, the mainstream linear vibration motors on the market can only achieve single-direction vibration, and the vibration effect is single. With the development of consumer electronics, mobile phones, game consoles, etc. have higher and higher requirements for the vibration effect of motors, and unidirectional vibration motors are increasingly unable to meet customer requirements. Summary of the Invention

[0005] The present invention aims to provide a bidirectional vibration motor to solve the problems mentioned in the background art. The present invention provides a bidirectional vibration motor that has the characteristic of enabling the motor to vibrate in both directions.

[0006] Another object of the present invention is to provide a method for realizing a bidirectional vibration motor.

[0007] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a bidirectional vibration motor, comprising a Z-direction vibration motor, the Z-direction vibration motor comprising an outer shell, an X-direction vibration motor being arranged inside the outer shell, the X-direction vibration motor comprising a shell, a lower bracket being arranged at the bottom of the shell, wherein the two sides of the shell are respectively connected to the outer shell through Z-direction spring pieces, the top surface of the shell and the bottom surface of the lower bracket are respectively connected to Z-direction magnetic steel groups, a Z-direction FPC board is arranged inside the outer shell, two Z-direction drive coils corresponding to the Z-direction magnetic steel groups are connected to the Z-direction FPC board, a mass block is arranged inside the shell, the upper and lower sides of the mass block are respectively connected to the shell and the lower bracket through X-direction spring pieces, an X-direction FPC board is arranged above the lower bracket, the X-direction drive coil is connected to the X-direction FPC board, and an X-direction magnetic steel group located on both sides of the X-direction drive coil is arranged inside the mass block.

[0008] In order to accommodate the internal vibration space, the outer shell further includes two side panels and two cover panels, wherein the two side panels are symmetrically arranged on the left and right, and the two cover panels are respectively located on the upper and lower sides of the side panels. The two side panels are fixedly connected by riveting.

[0009] In order to provide a driving magnetic field for the vibrator vibrating in the Z direction, the Z-direction magnetic steel group further includes four first magnetic steels, among which two first magnetic steels are arranged in parallel on the top surface of the shell, and the other two first magnetic steels are arranged in parallel at the bottom of the lower bracket. The magnetic poles of the two first magnetic steels arranged in parallel are arranged in opposite directions, and the magnetic poles of the upper and lower symmetrical first magnetic steels are arranged in the same direction.

[0010] In order to provide a driving magnetic field for the vibrator vibrating in the X-direction, the X-direction magnetic steel group further includes two second magnetic steels, wherein the two second magnetic steels are symmetrically arranged on both sides of the X-direction driving coil, the magnetic poles of the two second magnetic steels are arranged in opposite directions, and the second magnetic steel is arranged in opposite directions to the magnetic poles of the corresponding first magnetic steel.

[0011] In order to serve as a fixed pressing end of the Z-direction spring clip, the Z-direction spring clip can be effectively raised, the bending radius of the Z-direction spring clip can be protected, and the reliability of the Z-direction spring clip can be ensured. Furthermore, a baffle is provided on the connecting surface of the Z-direction spring clip.

[0012] In order to serve as a fixed bonding plane for the X-direction magnetic steel group to ensure the bonding force of the X-direction magnetic steel group, a gasket is further connected to one side of the mass block.

[0013] In order to ensure that the vibration sense in the X-direction vibration direction can be well transmitted, further, the mode of the Z-direction spring in the X-direction is at least three times the mode of the X-direction vibration motor.

[0014] Furthermore, in the present invention, the method for realizing a bidirectional vibration motor comprises the following steps:

[0015] (1) The housing, lower bracket, X-direction FPC board and X-direction driving coil serve as the stator of the X-direction vibration motor;

[0016] (2) The mass block, the gasket, the X-direction magnetic steel group and the X-direction spring serve as the vibrator of the X-direction vibration motor;

[0017] (3) The X-direction vibration motor, the Z-direction spring and the Z-direction magnetic steel group are the vibrator of the Z-direction vibration motor;

[0018] (4) The outer shell, the Z-direction driving coil and the Z-direction FPC board serve as the stator of the Z-direction vibration motor;

[0019] (5) Power is supplied to the X-direction drive coil and the Z-direction drive coil at the same time. When power is supplied, the electric field and the magnetic field interact with each other to drive the corresponding vibrators to move;

[0020] (6) The X-direction spring and the Z-direction spring provide restoring elastic force, supporting the corresponding vibrator to move in the X-direction and Z-direction under the action of electromagnetic force, thereby achieving bidirectional vibration.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. The present invention uses the X-direction vibration motor as the vibrator of the Z-direction vibration motor, which is divided into two drive systems. The X-direction drive coil and the Z-direction drive coil are energized at the same time. When energized, the electric field and the magnetic field interact with each other, thereby achieving bidirectional vibration output;

[0023] 2. The present invention can also energize the Z-direction vibration motor and the X-direction vibration motor separately to achieve vibration output in separate directions, thereby increasing the adjustability of subsequent tactile sensations;

[0024] 3. A baffle is provided on the connection surface of the Z-direction spring piece of the present invention. The baffle serves as the fixed pressing end of the Z-direction spring piece, which can effectively raise the Z-direction spring piece, protect the bending fillet of the Z-direction spring piece, and ensure the reliability of the Z-direction spring piece;

[0025] 4. A gasket is connected to one side of the mass block of the present invention, which serves as a fixed bonding plane for the X-direction magnetic steel group to ensure the bonding strength of the X-direction magnetic steel group;

[0026] 5. The modal of the Z-direction spring in the X-direction of the present invention is at least three times that of the X-direction vibration motor, ensuring that the vibration sense in the X-direction vibration direction can be well transmitted;

[0027] 6. The present invention replaces the X-axis vibration motor with a speaker device, which can achieve both the function of a speaker and the performance of a linear vibration motor. In addition, the speaker device is less affected by the vibration motor than the conventional solution, ensuring the output sound quality of the speaker;

[0028] 7. The frequency and frequency difference of the X-axis vibration and the Z-axis vibration of the present invention can be easily adjusted, thereby increasing the controllability of the frequency;

[0029] 8. The polarity setting of the X-direction magnetic steel group and the Z-direction magnetic steel group of the present invention enables the Z-direction magnetic steel group to not only provide a driving magnetic field for Z-direction vibration, but also help enhance the driving magnetic field of the X-direction vibration motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the explosion of the structure of the present invention;

[0031] Figure 2 This is a schematic diagram of the structure explosion of the Z-direction vibration motor of the present invention;

[0032] Figure 3 This is a schematic diagram of the exploded structure of the X-direction vibration motor of the present invention;

[0033] Figure 4 It is a schematic cross-sectional view of the present invention;

[0034] Figure 5 It is a magnetization schematic diagram of the present invention;

[0035] In the figure: 1. Z-direction vibration motor; 2. X-direction vibration motor; 3. outer shell; 31. side panel; 32. cover plate; 4. Z-direction spring; 41. baffle; 5. Z-direction magnetic steel group; 6. Z-direction drive coil; 7. Z-direction FPC board; 8. shell; 9. X-direction spring; 10. gasket; 11. mass block; 12. X-direction drive coil; 13. X-direction FPC board; 14. lower bracket; 15. X-direction magnetic steel group. DETAILED DESCRIPTION

[0036] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0037] Example 1

[0038] See also Figure 1-5 The present invention provides the following technical solutions: a bidirectional vibration motor, comprising a Z-direction vibration motor 1, the Z-direction vibration motor 1 comprising an outer shell 3, an X-direction vibration motor 2 being arranged inside the outer shell 3, the X-direction vibration motor 2 comprising a shell 8, a lower bracket 14 being arranged at the bottom of the shell 8, wherein both sides of the shell 8 are connected to the outer shell 3 through Z-direction spring pieces 4, the top surface of the shell 8 and the bottom surface of the lower bracket 14 are respectively connected to a Z-direction magnetic steel group 5, a Z-direction FPC board 7 is arranged inside the outer shell 3, two Z-direction drive coils 6 corresponding to the Z-direction magnetic steel group 5 are connected to the Z-direction FPC board 7, a mass block 11 is arranged inside the shell 8, the upper and lower sides of the mass block 11 are respectively connected to the shell 8 and the lower bracket 14 through X-direction spring pieces 9, an X-direction FPC board 13 is arranged above the lower bracket 14, an X-direction drive coil 12 is connected to the X-direction FPC board 13, and an X-direction magnetic steel group 15 located on both sides of the X-direction drive coil 12 is arranged inside the mass block 11.

[0039] By adopting the above technical solution, the present invention uses the X-direction vibration motor 2 as the vibrator of the Z-direction vibration motor 1, divides it into two drive systems, and simultaneously energizes the X-direction drive coil 12 and the Z-direction drive coil 6 (alternating current or pulse signal). When energized, the electric field and the magnetic field interact with each other, thereby achieving bidirectional vibration output; in the present invention, when the frequencies of the X-direction and Z-direction are consistent, the Z-direction vibration motor 1 and the X-direction vibration motor 2 can also achieve bidirectional vibration output by passing the same signal; the present invention can also energize the Z-direction vibration motor 1 and the X-direction vibration motor 2 separately to achieve vibration output in separate directions, thereby increasing the adjustability of subsequent tactile sensation.

[0040] Specifically, the outer shell 3 includes two side panels 31 and two cover panels 32, wherein the two side panels 31 are symmetrically arranged on the left and right, and the two cover panels 32 are respectively located on the upper and lower sides of the side panels 31. The two side panels 31 are fixedly connected by riveting, and the two cover panels 32 and the side panels 31 are laser welded.

[0041] By adopting the above technical solution, it is used to accommodate the internal vibration space.

[0042] Specifically, the Z-direction magnetic steel group 5 includes four first magnetic steels, among which two first magnetic steels are arranged side by side and glued to the top surface of the shell 8, and the other two first magnetic steels are arranged side by side and glued to the bottom of the lower bracket 14. The magnetic pole directions of the two first magnetic steels arranged side by side are set in opposite directions, and the magnetic pole directions of the upper and lower symmetrical first magnetic steels are set in the same direction.

[0043] By adopting the above technical solution, a driving magnetic field is provided for the vibrator vibrating in the Z direction.

[0044] Specifically, the X-direction magnetic steel group 15 includes two second magnetic steels, wherein the two second magnetic steels are symmetrically arranged on both sides of the X-direction drive coil 12, the magnetic poles of the two second magnetic steels are arranged in opposite directions, and the magnetic poles of the second magnetic steels are arranged in opposite directions to the corresponding first magnetic steels.

[0045] By adopting the above technical solution, a driving magnetic field is provided for the vibrator vibrating in the X direction.

[0046] Example 2

[0047] The difference between this embodiment and the first embodiment is that: specifically, a blocking piece 41 is provided on the connection surface of the Z-direction spring piece 4, and the blocking piece 41 is connected to the Z-direction spring piece 4 by laser welding.

[0048] By adopting the above technical solution, the blocking piece 41 serves as the fixed pressing end of the Z-direction spring piece 4, which can effectively raise the Z-direction spring piece 4, protect the bending fillet of the Z-direction spring piece 4, and ensure the reliability of the Z-direction spring piece 4.

[0049] Example 3

[0050] The difference between this embodiment and the first embodiment is that: specifically, a gasket 10 is connected to one side of the mass block 11 , and the gasket 10 and the mass block 11 are connected by laser welding.

[0051] By adopting the above technical solution, the gasket 10 serves as a fixed bonding plane of the X-direction magnetic steel group 15 to ensure the bonding force of the X-direction magnetic steel group 15 .

[0052] Example 4

[0053] The difference between this embodiment and the first embodiment is that: specifically, the mode of the Z-direction spring 4 in the X-direction is at least three times the mode of the X-direction vibration motor 2 .

[0054] By adopting the above technical solution, it is ensured that the vibration sensation in the X-direction vibration direction can be well transmitted.

[0055] Example 5

[0056] The difference between this embodiment and the first embodiment is that: specifically, the X-direction vibration motor 2 is replaced by a speaker device.

[0057] By adopting the above technical solution, it is possible to achieve both the function of a speaker and the performance of a linear vibration motor, and the speaker device is less affected by the vibration motor than the conventional solution, thereby ensuring the output sound quality of the speaker.

[0058] Example 6

[0059] Furthermore, the method for implementing a bidirectional vibration motor according to the present invention comprises the following steps:

[0060] (1) The housing 8, the lower bracket 14, the X-direction FPC board 13 and the X-direction driving coil 12 serve as the stator of the X-direction vibration motor 2;

[0061] (2) The mass block 11, the gasket 10, the X-direction magnetic steel group 15 and the X-direction spring 9 serve as the vibrator of the X-direction vibration motor 2;

[0062] (3) The X-direction vibration motor 2, the Z-direction spring 4 and the Z-direction magnetic steel group 5 are the vibrators of the Z-direction vibration motor 1;

[0063] (4) The outer shell 3, the Z-direction driving coil 6 and the Z-direction FPC board 7 serve as the stator of the Z-direction vibration motor 1;

[0064] (5) Power is supplied to the X-direction drive coil 12 and the Z-direction drive coil 6 at the same time. When power is supplied, the electric field and the magnetic field interact with each other to drive the corresponding vibrators to move;

[0065] (6) The X-direction spring piece 9 and the Z-direction spring piece 4 provide restoring elastic force, supporting the corresponding vibrator to move in the X-direction and the Z-direction under the action of the electromagnetic force, thereby realizing bidirectional vibration.

[0066] In summary, the present invention uses the X-direction vibration motor 2 as the vibrator of the Z-direction vibration motor 1, divides it into two drive systems, and energizes the X-direction drive coil 12 and the Z-direction drive coil 6 at the same time. When energized, the electric field and the magnetic field interact with each other, thereby realizing bidirectional vibration output; the present invention can also energize the Z-direction vibration motor 1 and the X-direction vibration motor 2 separately to realize vibration output in separate directions, thereby increasing the adjustability of subsequent tactile sensation; a baffle 41 is provided on the connecting surface of the Z-direction spring clip 4 of the present invention, and the baffle 41 serves as the fixed pressing end of the Z-direction spring clip 4, which can effectively raise the Z-direction spring clip 4, protect the bending fillet of the Z-direction spring clip 4, and ensure the reliability of the Z-direction spring clip 4; a gasket 10 is connected to one side of the mass block 11 of the present invention, and the gasket 10 serves as the fixed bonding plane of the X-direction magnetic steel group 15 to ensure the bonding force of the X-direction magnetic steel group 15; the mode of the Z-direction spring clip 4 in the X direction of the present invention is at least three times the mode of the X-direction vibration motor 2, ensuring the X The vibration sensation in the vibration direction can be well transmitted; the present invention replaces the X-direction vibration motor 2 with a speaker device, which can achieve both the function of a speaker and the performance of a linear vibration motor, and the speaker device is less affected by the vibration motor than the conventional solution, thereby ensuring the output sound quality of the speaker; the frequency and frequency difference of the X-direction vibration and the Z-direction vibration of the present invention can be easily adjusted, thereby increasing the controllability of the frequency; the polarity setting of the X-direction magnetic steel group 15 and the Z-direction magnetic steel group 5 of the present invention enables the Z-direction magnetic steel group 5 to not only provide a driving magnetic field for the Z-direction vibration, but also help to enhance the driving magnetic field of the X-direction vibration motor 2 (1. The magnetic poles of the X-direction magnetic steel group 15 and the Z-direction magnetic steel group 5 repel each other, which can play a role in gathering the magnetic field for the X-direction magnetic steel group 15, thereby enhancing the driving force; 2. The back magnetic field direction of the Z-direction magnetic steel group 5 can also provide a magnetic field to the X-direction vibration motor 2, thereby enhancing the driving force of the X-direction vibration motor 2).

[0067] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A bidirectional vibration motor, characterized in that: It includes a Z-direction vibration motor, which includes an outer shell. An X-direction vibration motor is provided inside the outer shell. The X-direction vibration motor includes a shell. The bottom of the shell is provided with a lower bracket connected thereto, wherein the two sides of the shell are respectively connected to the outer shell through Z-direction spring pieces, the top surface of the shell and the bottom surface of the lower bracket are respectively connected to the Z-direction magnetic steel group, a Z-direction FPC board is provided inside the outer shell, two Z-direction drive coils corresponding to the Z-direction magnetic steel group are connected to the Z-direction FPC board, a mass block is provided inside the shell, the upper and lower sides of the mass block are respectively connected to the shell and the lower bracket through X-direction spring pieces, an X-direction FPC board is provided above the lower bracket, the X-direction FPC board is connected to the X-direction drive coil, and an X-direction magnetic steel group located on both sides of the X-direction drive coil is provided inside the mass block.

2. A bidirectional vibration motor according to claim 1, characterized in that: The outer shell includes two side panels and two cover panels, wherein the two side panels are symmetrically arranged on the left and right, and the two cover panels are respectively located on the upper and lower sides of the side panels.

3. A bidirectional vibration motor according to claim 2, characterized in that: The two side panels are fixedly connected by riveting.

4. The bidirectional vibration motor according to claim 1, characterized in that: The Z-direction magnetic steel group includes four first magnetic steels, among which two first magnetic steels are arranged in parallel on the top surface of the shell, and the other two first magnetic steels are arranged in parallel at the bottom of the lower bracket. The magnetic poles of the two first magnetic steels arranged in parallel are arranged in opposite directions, and the magnetic poles of the two symmetrical first magnetic steels above and below are arranged in the same direction.

5. The bidirectional vibration motor according to claim 4, characterized in that: The X-direction magnetic steel group includes two second magnetic steels, wherein the two second magnetic steels are symmetrically arranged on both sides of the X-direction drive coil, the magnetic poles of the two second magnetic steels are arranged in opposite directions, and the magnetic poles of the second magnetic steels are arranged in opposite directions to the corresponding first magnetic steels.

6. The bidirectional vibration motor according to claim 1, characterized in that: A blocking piece is provided on the connecting surface of the Z-direction elastic piece.

7. The bidirectional vibration motor according to claim 1, characterized in that: A gasket is connected to one side of the mass block.

8. The bidirectional vibration motor according to claim 1, characterized in that: The mode of the Z-direction spring in the X-direction is at least three times the mode of the X-direction vibration motor.

9. The method for realizing a bidirectional vibration motor according to any one of claims 1 to 8, characterized in that: The following steps are involved: (1) The housing, lower bracket, X-direction FPC board and X-direction driving coil serve as the stator of the X-direction vibration motor; (2) The mass block, the gasket, the X-direction magnetic steel group and the X-direction spring serve as the vibrator of the X-direction vibration motor; (3) The X-direction vibration motor, the Z-direction spring and the Z-direction magnetic steel group are the vibrator of the Z-direction vibration motor; (4) The outer shell, the Z-direction driving coil and the Z-direction FPC board serve as the stator of the Z-direction vibration motor; (5) Power is supplied to the X-direction drive coil and the Z-direction drive coil at the same time. When power is supplied, the electric field and the magnetic field interact with each other to drive the corresponding vibrators to move; (6) The X-direction spring and the Z-direction spring provide restoring elastic force, supporting the corresponding vibrator to move in the X-direction and Z-direction under the action of electromagnetic force, thereby achieving bidirectional vibration.

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