Button vibration motor with built-in eccentric wheel

Abstract

The utility model relates to the field of vibration motors, in particular to a button vibration motor with built-in eccentric wheels, which comprises a shell, a rotating shaft, the eccentric wheels and a driving mechanism, the shell is provided with a containing cavity, the rotating shaft is arranged in the containing cavity, the rotating shaft is rotatably arranged in the shell, the number of the eccentric wheels is two, and the eccentric wheels are arranged in the containing cavity. Wherein one eccentric wheel is arranged on one side of the rotating shaft in a sleeving mode, the other eccentric wheel is arranged on the side, away from the eccentric wheels, of the rotating shaft in a sleeving mode, and the driving mechanism is arranged in the containing cavity and used for driving the two eccentric wheels to work. According to the invention, the centrifugal force and vibration sensing area generated by the driving mechanism are increased, and the interaction feedback effect in the use process is improved.

Description

Technical Field

[0001] The present application relates to the field of vibration motors, and in particular to a button vibration motor with a built-in eccentric wheel. Background Art

[0002] Button vibration motors are commonly used in electronic products such as mobile phones and tablets. Electronic devices usually use vibration to achieve user interaction feedback, such as in caller ID, keyboard vibration and other application scenarios.

[0003] The button vibration motor usually includes a shell, a driving mechanism and an eccentric wheel. The shell is provided with a receiving cavity. The eccentric wheel and the driving mechanism are both arranged in the receiving cavity. The eccentric wheel is arranged on one side of the driving mechanism and works with the driving of the driving mechanism.

[0004] In the above technology, when the eccentric wheel is arranged on one side of the driving mechanism, the centrifugal force and the vibration sensing area generated by the driving mechanism are small. Therefore, there is a phenomenon that the interactive feedback is not obvious during use. Summary of the invention

[0005] In order to increase the centrifugal force and vibration sensing area generated by the driving mechanism and improve the interactive feedback during use, the present application provides a button vibration motor with a built-in eccentric wheel.

[0006] The present application provides a button vibration motor with a built-in eccentric wheel, which adopts the following technical solution:

[0007] A button vibration motor with a built-in eccentric wheel comprises a shell, a rotating shaft, an eccentric wheel and a driving mechanism, wherein the shell is provided with a accommodating cavity, the rotating shaft is arranged in the accommodating cavity, the rotating shaft is rotatably arranged in the shell, two groups of eccentric wheels are arranged, one of the eccentric wheels is sleeved on one side of the rotating shaft, and the other eccentric wheel is sleeved on the side of the rotating shaft away from the eccentric wheel, and the driving mechanism is arranged in the accommodating cavity and is used to drive the two groups of eccentric wheels to work.

[0008] By adopting the above technical solution, a accommodating cavity is opened in the shell, so that the rotating shaft and the driving mechanism are positioned at the specified orientation. When the shell is fixed to the specified orientation, the driving mechanism is used to drive the rotating shaft to rotate, thereby driving the first eccentric wheel and the second eccentric wheel to rotate. The setting of the first eccentric wheel and the second eccentric wheel is beneficial to increase the centrifugal force and vibration sensing area generated by the driving mechanism, thereby enhancing the interactive feedback during use.

[0009] Optionally, the driving mechanism includes a magnet module and a coil module, the magnet module is arranged on one side of one of the eccentric wheels, the coil module is passed through the magnet module and is arranged on the other side of the eccentric wheel, the magnet module is used to drive the coil module to rotate, and the magnet module is used to drive the rotating shaft to rotate.

[0010] By adopting the above technical solution, the coil module is driven to rotate by the magnet module, so that the coil module drives the rotating shaft to rotate, and then the rotation drives the eccentric wheels at both ends to rotate. The rotation of the two eccentric wheels together is conducive to increasing the centrifugal force and vibration sensing area generated, thereby improving the interactive feedback during practical use.

[0011] Optionally, the magnet module includes a plurality of sub-magnets, and the plurality of sub-magnets are sequentially connected end to end to form an annular structure, and two adjacent sub-magnets are connected via magnetic poles of opposite names.

[0012] By adopting the above technical solution, through the arrangement of multiple sub-magnets, they are tightly connected together through the principle of attraction between opposites, which is beneficial to ensuring the structural stability of the magnet module. The arrangement of multiple sub-magnets is beneficial to increasing the overall strength of the magnetic field, which is beneficial to and ensures the sensitivity and vibration power of the device.

[0013] Optionally, the eccentric wheel includes an eccentric portion and a circumferential portion, the circumferential size of the eccentric portion gradually decreases, and the circumferential portion is cylindrical to define a accommodating space inside the eccentric wheel, and the magnet module or the coil module is arranged in the accommodating space.

[0014] By adopting the above technical scheme, the setting of the eccentric part and the circumferential part is conducive to fixing the coil module or the magnet module to the specified position, thereby ensuring the limitation of the coil module or the magnet module, and the size of the eccentric part is gradually reduced, thereby ensuring the gradual transition of the eccentric part, driving the center of gravity of the eccentric wheel to shift, thereby driving the overall rotation transition and ensuring the circulation transmission of power.

[0015] Optionally, the eccentric wheel further includes a sleeve, the circumferential portion is coaxially arranged with the sleeve, the sleeve has a connecting hole, the sleeve is rotatably fitted to the rotating shaft through the connecting hole, and the sleeve is connected to the circumferential portion through the eccentric portion.

[0016] By adopting the above technical solution, the coaxial arrangement of the circumferential part and the sleeve is conducive to driving the sleeve and the circumferential part to rotate together through the rotating shaft, and through the connection between the three, the stable transmission of force is guaranteed, and the stability of the force of the device is guaranteed.

[0017] Optionally, the eccentric portion is integrally formed with the circumferential portion and the sleeve.

[0018] By adopting the above technical solution, the eccentric part, the circumferential part and the sleeve are integrally formed, thereby ensuring the stability of the connection between the three, thereby ensuring stable force between the three, and through the integrally formed setting of the three, stable rotation and connection between the three are guaranteed, thereby ensuring the overall stability of the device.

[0019] Optionally, the eccentric wheel further includes an auxiliary connecting portion, and two ends of the auxiliary connecting portion are respectively connected to the shaft sleeve and the circumferential portion.

[0020] By adopting the above technical solution, the provision of the auxiliary connection part and the connection of the two ends of the auxiliary connection part are conducive to ensuring the stability of the connection between the devices.

[0021] Optionally, there is a receiving space between the circumferential portion and the sleeve, and the magnet module is fixedly disposed in the receiving space.

[0022] By adopting the above technical solution and setting up the accommodating space, it is not only beneficial to provide a protective function, but also beneficial to provide an installation space, thereby facilitating the effectiveness of the device space and the safety of the device, and ensuring the stability of the device use.

[0023] In summary, the present application includes at least one of the following beneficial technical effects:

[0024] 1. A accommodating cavity is opened through the shell to position the rotating shaft and the driving mechanism to a specified position. When the shell is fixed to the specified position, the driving mechanism is used to drive the rotating shaft to rotate, thereby driving the first eccentric wheel and the second eccentric wheel to rotate. The setting of the first eccentric wheel and the second eccentric wheel is conducive to increasing the centrifugal force and vibration sensing area generated by the driving mechanism, thereby improving the interactive feedback during use.

[0025] 2. Through the arrangement of multiple sub-magnets, they are tightly connected together through the principle of attraction between opposites, which is beneficial to ensure the structural stability of the magnet module. The arrangement of multiple sub-magnets is beneficial to increase the overall strength of the magnetic field, which is beneficial to and ensures the sensitivity and vibration power of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of the device of the embodiment of the present application.

[0027] Figure 2 It is an exploded view of the overall structure of the device of the embodiment of the present application.

[0028] Figure 3 It is a schematic diagram of the structure of the eccentric wheel in the embodiment of the present application.

[0029] Explanation of the accompanying drawings: 1. Shell; 11. Inner cavity; 12. First subshell; 13. Second subshell; 2. Rotating shaft; 3. Eccentric wheel; 31. Eccentric part; 32. Circumferential part; 33. Bushing; 34. Auxiliary connecting part; 4. Driving mechanism; 41. Magnet module; 411. Sub-magnet; 42. Coil module. DETAILED DESCRIPTION

[0030] The following is combined with Figure 1-3 This application is described in further detail.

[0031] The embodiments of the present application are disclosed.

[0032] Reference Figure 1 A button vibration motor with a built-in eccentric wheel 3 includes a housing 1, a rotating shaft 2, an eccentric wheel 3 and a driving mechanism 4.

[0033] The housing 1 is the basic component of the vibration motor, which provides installation support for other components of the vibration motor and also has a certain protection function. Specifically, the housing 1 has an inner cavity 11, and the rotating shaft 2, the eccentric wheel 3 and the driving mechanism 4 are all arranged in the inner cavity 11, which is the installation space of the rotating shaft 2, the eccentric wheel 3 and the driving mechanism 4.

[0034] Reference Figure 1 and Figure 2 Generally, in order to facilitate assembly and disassembly, the housing 1 of this embodiment may include a first sub-shell 12 and a second sub-shell 13, wherein the first sub-shell 12 and the second sub-shell 13 are detachably connected to form an inner cavity 11. This arrangement also facilitates the inspection and repair of the components inside the vibration motor, and when inspection and repair are required, only the first sub-shell 12 and the second sub-shell 13 need to be disassembled, and the inner cavity 11 can be exposed.

[0035] The vibration motor of this embodiment realizes interactive feedback between the electronic device and the user through vibration, and the eccentric wheel 3 is the main component of the vibration motor, and the vibration function of the vibration motor is realized based on the eccentric wheel 3. It should be understood that the eccentric wheel 3 includes an eccentric portion 31. Based on the existence of the eccentric portion 31, the center of gravity of the eccentric wheel 3 deviates from its rotation axis. When the eccentric wheel 3 rotates, its heavier side will produce up and down vibrations under the influence of centrifugal force, thereby causing the eccentric wheel 3 to produce a vibration effect. In this embodiment, when the eccentric wheel 3 vibrates, it will contact the housing 1 and collide with the housing 1 to cause the overall vibration effect of the vibration motor; when the vibration motor is set in an electronic device, the electronic device can be made to have a vibration function.

[0036] Reference Figure 1 and Figure 2 , the rotating shaft 2 is arranged on one side of the eccentric wheel 3. The rotating shaft 2 is a supporting member of the eccentric wheel 3, which is connected to the housing 1. The eccentric wheel 3 is sleeved on the rotating shaft 2, so that the eccentric wheel 3 and the rotating shaft 2 form a rotating pair and can realize a rotating action around the rotating shaft 2. The rotating axis of the eccentric wheel 3 is located on the rotating shaft 2. Usually, the rotating shaft 2 can be provided with a bearing in its circumferential direction, and the bearing is used to rotate with the eccentric wheel 3. Such a setting can effectively improve the rotation smoothness of the eccentric wheel 3 and the rotating shaft 2.

[0037] Reference Figure 1 and Figure 2, the driving mechanism 4 is arranged on one side of the eccentric wheel 3, and the driving mechanism 4 is the power structure of the vibration motor, which is connected to the eccentric wheel 3 and used to drive the eccentric wheel 3 to rotate. In this embodiment, the driving mechanism 4 includes a magnet module 41 and a coil module 42, one of which is connected to the eccentric wheel 3 and the other is connected to the housing 1. Specifically, based on the magnetic effect principle of electric current, the coil module 42 will generate a first magnetic field around it after being energized, and there is a second magnetic field around the magnet module 41. Due to the mutual repulsion of the same magnetic poles, under the interaction of the first magnetic field and the second magnetic field, the magnet module 41 and the coil module 42 will be subjected to a driving thrust, thereby causing the eccentric wheel 3 to be subjected to a driving thrust. Since the eccentric wheel 3 has a degree of rotational freedom, the driving mechanism 4 can smoothly drive the eccentric wheel 3 to rotate.

[0038] This embodiment does not limit the specific arrangement relationship between the magnet module 41 and the coil module 42 on the eccentric wheel 3 and the shell 1. The magnet module 41 is arranged on the eccentric wheel 3 as a rotor, and the coil module 42 is arranged on the shell 1 as a stator. Of course, the magnet module 41 can also be arranged on the shell 1 as a stator, and the coil module 42 is correspondingly arranged on the eccentric wheel 3 as a rotor.

[0039] In order to optimize the vibration effect of the vibration motor, the first end of the eccentric part 31 of this embodiment extends to the edge of the eccentric wheel 3, and the second end of the eccentric part 31 extends to the area where the eccentric wheel 3 cooperates with the rotating shaft 2; in the direction from the first end to the second end, the circumferential size of the eccentric part 31 gradually decreases. It should be understood that on the eccentric wheel 3, the side where the eccentric part 31 is set is the eccentric area of ​​the eccentric wheel 3, and the center of gravity of the eccentric wheel 3 is located in this area; because the circumferential size of the eccentric part 31 gradually decreases in the direction from the first section to the second end, that is, the mass distribution of the eccentric part 31 in this direction is also gradually decreasing, the mass of the eccentric part 31 at the end close to the rotating shaft 2 is the smallest, and the mass of the eccentric part 31 at the end close to the edge of the eccentric wheel 3 is the largest, thereby making the center of gravity of the eccentric wheel 3 closer to one side of its edge. In this way, when the eccentric wheel 3 of this embodiment is rotating, compared with the related art, the eccentric wheel 3 undoubtedly has a larger amplitude and higher vibration efficiency, thereby optimizing the vibration effect of the vibration motor.

[0040] It should be noted that the eccentric portion 31 of the present embodiment extends from the area of ​​the eccentric wheel 3 close to the rotating shaft 2 to the edge of the eccentric wheel 3, that is, the mass distribution of the eccentric portion 31 on the eccentric wheel 3 is relatively linear. This can avoid the eccentric portion 31 being relatively concentrated on the edge of the eccentric wheel 3, which can undoubtedly improve the rotation stability of the eccentric wheel 3.

[0041] It can be seen from the above description that in the vibration motor disclosed in the embodiment of the present application, one of the magnet module 41 and the coil module 42 is connected to the eccentric wheel 3, and the other is connected to the shell 1. Based on the principle of magnetic effect of electric current, when the coil module 42 is energized, the magnet module 41 and the coil module 42 will generate a mutual driving effect, so that the eccentric wheel 3 rotates around the rotating shaft 2; due to the existence of the eccentric part 31, one side of the eccentric wheel 3 will be heavier, and when the eccentric wheel 3 rotates, the part where the eccentric part 31 is located will vibrate.

[0042] At the same time, in the direction from the first end to the second end, the circumferential size of the eccentric portion 31 gradually decreases, that is, in the area where the eccentric portion 31 is set on the eccentric wheel 3, the weight of the part close to the edge is greater than the weight of the part close to the rotation axis. In this way, the center of gravity of the eccentric wheel 3 is closer to its edge, which can undoubtedly optimize the overall vibration effect of the vibration motor. Compared with the related art, the vibration motor disclosed in the embodiment of the present application can save costs and provide better vibration effects.

[0043] Reference Figure 2 and Figure 3 The eccentric wheel 3 of this embodiment has various configurations, which are not limited in this embodiment. For example, the eccentric wheel 3 is a circular plate, which is rotatably matched with the rotating shaft 2 at the center, and the eccentric portion 31 is arranged on the plate surface of the circular plate. In another specific implementation, the eccentric wheel 3 of this embodiment may also include a circumferential portion 32 and a sleeve 33, the circumferential portion 32 is arranged in a circular ring shape, and the circumferential portion 32 and the sleeve 33 are arranged coaxially, the sleeve 33 has a connecting hole, the sleeve 33 is rotatably matched with the rotating shaft 2 through the connecting hole, and the sleeve 33 is connected to the circumferential portion 32 through the eccentric portion 31.

[0044] Specifically, based on the shaft sleeve 33, the eccentric wheel 3 can easily achieve rotational cooperation with the rotating shaft 2; the circumferential portion 32 determines the overall profile of the eccentric wheel 3, which is in the shape of a circular ring, and is more convenient to be arranged in the shell 1, ensuring that the eccentric wheel 3 avoids interference with the shell 1 during rotation; the eccentric portion 31 plays a connecting role between the circumferential portion 32 and the shaft sleeve 33. Under such a setting, a large amount of avoidance space is formed in the area between the circumferential portion 32 and the shaft sleeve 33 except for the eccentric portion 31, which can effectively reduce the overall mass of the eccentric wheel 3. When the driving efficiency of the driving mechanism 4 is consistent, the eccentric wheel 3 will undoubtedly have a higher rotation efficiency, and the eccentric portion 31 will also have a higher vibration efficiency, thereby ultimately improving the vibration effect of the vibration motor.

[0045] Generally, the eccentric portion 31 of this embodiment can be integrally formed with the circumferential portion 32 and the sleeve 33. Under such a configuration, the overall structural strength of the eccentric wheel 3 is undoubtedly better, which can effectively reduce the risk of separation of the internal components of the eccentric wheel 3 after long-term use.

[0046] Reference Figure 2 and Figure 3 , since the connection between the circumferential portion 32 and the sleeve 33 is only achieved through the eccentric portion 31, the structural strength inside the eccentric wheel 3 is relatively low, especially when the eccentric wheel 3 rotates, the area where the eccentric portion 31 is located will produce oscillation, and the eccentric portion 31 is very easy to break due to excessive amplitude in the absence of restriction (that is, the vibration effect is increased in an unsafe situation), which will cause the vibration motor to fail to work. Based on this, the eccentric wheel 3 of this embodiment can also include an auxiliary connecting portion 34, and the two ends of the auxiliary connecting portion 34 are respectively connected to the sleeve 33 and the circumferential portion 32. Specifically, the auxiliary connecting portion 34 and the eccentric portion 31 play a role in connecting the circumferential portion 32 and the sleeve 33, which can undoubtedly improve the connection strength between the circumferential portion 32 and the sleeve 33. At the same time, the auxiliary connecting portion 34 can also limit the eccentric portion 31 when the eccentric portion 31 oscillates, and the support of the sleeve 33 to the circumferential portion 32 can also be transmitted through the auxiliary connecting member, thereby avoiding the problem of the eccentric portion 31 breaking when the eccentric wheel 3 rotates.

[0047] Usually, the auxiliary connecting piece and the eccentric portion 31 can be symmetrically arranged on both sides of the sleeve 33. With such an arrangement, the connection structure between the sleeve 33 and the circumferential portion 32 is more evenly distributed, which can further enhance the structural strength inside the eccentric wheel 3.

[0048] In order to avoid interference between the magnet module 41 and the coil module 42 and the rotating shaft 2, the magnet module 41 and the coil module 42 of this embodiment can both be annular structures, and the magnet module 41 and the coil module 42 are both arranged around the rotating shaft 2. Specifically, since the magnet module 41 and the coil module 42 are arranged as annular structures, there is an escape space between the magnet module 41 and the coil module 42, and the rotating shaft 2 can be inserted into the escape space and rotated with the sleeve 33, so that the eccentric wheel 3 can be supported.

[0049] It should be noted that in order to further optimize the compactness of the internal structure of the vibration motor, one of the magnet module 41 and the coil module 42 can be arranged in the avoidance space of the other; the avoidance space in the middle of the magnet module 41 is larger than the overall size of the coil module 42, and the coil module 42 can be smoothly arranged in the avoidance space of the magnet module 41, which can undoubtedly make the internal structure of the vibration motor more compact.

[0050] In the embodiment where the coil module 42 is connected to the housing 1 and the magnet module 41 is connected to the eccentric wheel 3, the circumferential portion 32 of this embodiment can be cylindrical, and there is a receiving space between the circumferential portion 32 and the sleeve 33, and the magnet module 41 is fixedly arranged in the receiving space. It should be understood that under such a setting, the circumferential portion 32 and the sleeve 33 have certain structural dimensions in their axial direction, so a receiving space can be formed between the two, and when the magnet module 41 is fixedly arranged in the receiving space, the magnet module 41 is fixed on the eccentric wheel 3, and the receiving space is the installation space of the magnet module 41; in this embodiment, the eccentric wheel 3 is the installation base of the magnet module 41, and can also provide a certain protection function for the magnet module 41.

[0051] This embodiment does not limit the fixing method of the magnet module 41 in the accommodation space, and the magnet module 41 can be fixedly assembled by clamping, bonding, threading, etc. In combination with the above, in the embodiment where the coil module 42 is arranged on the eccentric wheel 3 and the magnet module 41 is arranged on the housing 1, the coil module 42 can also be fixedly arranged in the accommodation space.

[0052] In order to optimize the reaction sensitivity of the driving mechanism 4, the magnet module 41 of this embodiment may include a plurality of sub-magnets 411, which are connected end to end in sequence to form an annular structure, and two adjacent sub-magnets 411 are connected by opposite poles. It should be understood that, due to the mutual attraction of opposite poles, the plurality of sub-magnets 411 can be stably connected together by attraction, which can optimize the structural stability of the magnet module 41; and the plurality of sub-magnets 411 form an annular structure, wherein there is an escape space in the middle, which is convenient for passing the rotating shaft 2 or setting the coil module 42; at the same time, since there are a plurality of sub-magnets 411, it is undoubtedly possible to increase the strength of the second magnetic field generated by the magnet module 41 as a whole, so that the inductive sensitivity inside the driving mechanism 4 can be improved, thereby improving the reaction sensitivity and vibration rated efficiency of the vibration motor.

[0053] Based on the vibration motor disclosed in the aforementioned embodiment of the present invention, an embodiment of the present invention discloses an electronic device, which includes the vibration motor described above, and the vibration motor is arranged in the electronic device; during specific operation, the vibration effect of the vibration motor can be transmitted to the user through the device housing 100, screen and other structures of the electronic device, thereby realizing interactive feedback between the electronic device and the user.

[0054] The electronic device referred to in the embodiment of the present invention may be a smart phone, a tablet computer, an e-book reader, a wearable device, etc. The embodiment of the present invention does not limit the specific type of the electronic device.

[0055] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A button vibration motor with a built-in eccentric wheel (3), characterized in that: The invention comprises a shell (1), a rotating shaft (2), an eccentric wheel (3) and a driving mechanism (4); the shell (1) is provided with a receiving cavity, the rotating shaft (2) is arranged in the receiving cavity, the rotating shaft (2) is rotatably arranged on the shell (1), two groups of eccentric wheels (3) are arranged, one of the eccentric wheels (3) is sleeved on one side of the rotating shaft (2), and the other eccentric wheel (3) is sleeved on a side of the rotating shaft (2) away from the eccentric wheel (3); the driving mechanism (4) is arranged in the receiving cavity and is used to drive the two groups of eccentric wheels (3) to work.

2. A button vibration motor with a built-in eccentric wheel (3) according to claim 1, characterized in that: The driving mechanism (4) comprises a magnet module (41) and a coil module (42); the magnet module (41) is arranged on one side of one of the eccentric wheels (3); the coil module (42) passes through the magnet module (41) and is arranged on one side of the other eccentric wheel (3); the magnet module (41) is used to drive the coil module (42) to rotate; and the magnet module (41) is used to drive the rotating shaft (2) to rotate.

3. A button vibration motor with a built-in eccentric wheel (3) according to claim 2, characterized in that: The magnet module (41) comprises a plurality of sub-magnets (411), wherein the plurality of sub-magnets (411) are sequentially connected end to end to form an annular structure, and two adjacent sub-magnets (411) are connected via magnetic poles of different names.

4. A button vibration motor with a built-in eccentric wheel (3) according to claim 2, characterized in that: The eccentric wheel (3) comprises an eccentric portion (31) and a circumferential portion (32); the circumferential dimension of the eccentric portion (31) gradually decreases; the circumferential portion (32) is cylindrical so as to define a receiving space inside the eccentric wheel (3); the magnet module (41) or the coil module (42) is arranged in the receiving space.

5. A button vibration motor with a built-in eccentric wheel (3) according to claim 4, characterized in that: The eccentric wheel (3) further comprises a shaft sleeve (33), the circumferential portion (32) and the shaft sleeve (33) are coaxially arranged, the shaft sleeve (33) has a connecting hole, the shaft sleeve (33) is rotatably engaged with the rotating shaft (2) through the connecting hole, and the shaft sleeve (33) is connected to the circumferential portion (32) through the eccentric portion (31).

6. A button vibration motor with a built-in eccentric wheel (3) according to claim 5, characterized in that: The eccentric portion (31), the circumferential portion (32) and the shaft sleeve (33) are integrally formed.

7. A button vibration motor with a built-in eccentric wheel (3) according to claim 5, characterized in that: The eccentric wheel (3) further comprises an auxiliary connecting portion (34), and two ends of the auxiliary connecting portion (34) are respectively connected to the shaft sleeve (33) and the circumferential portion (32).

8. A button vibration motor with a built-in eccentric wheel (3) according to claim 5, characterized in that: The accommodating space is provided between the circumferential portion (32) and the shaft sleeve (33), and the magnet module (41) is fixedly arranged in the accommodating space.

Images