Z-direction vibration motor

Abstract

The utility model relates to the technical field of micro motors, and discloses a Z-direction vibration motor, which comprises a cylindrical shell with an opening at one end, a plate-shaped cover body, a vibrator assembly, a stator assembly and an elastic piece, the shell and the cover body are buckled to form an accommodating space, the stator assembly is fixed on the inner surface of the cover body, and the elastic piece is fixed on the inner surface of the cover body. The vibrator assembly is elastically suspended in the containing space through the elastic piece, the vibrator assembly and the stator assembly are arranged in a vertically spaced mode, the free end of an opening of the shell is bent outwards and extends to form a flange parallel to the cover body, and the joint of the flange and the cover body is coated with a first sealant part. The free end edge of the shell is provided with a first notch; the cover body comprises a circular body part and a supporting part which extends in parallel from the body part, and the supporting part corresponds to the first notch and extends out of the shell. The Z-direction vibration motor is high in structural stability, good in sealing performance and good in vibration performance.

Description

Technical Field

[0001] This utility model relates to the field of vibration motor technology, and in particular to a Z-axis vibration motor. Background Technology

[0002] With the development of electronic technology, portable consumer electronics products have gradually occupied the global consumer market, such as mobile phones, handheld game consoles, and multimedia entertainment devices. These electronic products generally use linear vibration motors for haptic feedback, such as incoming call notifications on mobile phones and vibration feedback on game consoles. To meet such a wide range of applications, the requirements for miniaturization and vibration performance of linear vibration motors are becoming increasingly stringent.

[0003] Existing linear vibratory motors typically include a housing, a cover, an oscillator, a stator, and springs. The housing and cover are welded together to form a housing space, within which the oscillator, stator, and springs are housed. The oscillator comprises a mass block and a magnet, while the stator assembly includes coils and a circuit board for the power supply coils. Existing linear vibratory motors convert electrical energy into linear motion mechanical energy, which is achieved by the coils repelling or attracting the magnet, causing the magnet to move and thus creating oscillation. However, the existing welded structure of the housing and cover results in poor waterproofing performance. Therefore, there is an urgent need for a vertical linear vibratory motor with good sealing performance and high vibration performance to solve the technical problems of existing vibratory motors. Summary of the Invention

[0004] The purpose of this utility model is to provide a Z-axis vibration motor with a simple structure and good sealing performance. The specific technical solution is as follows:

[0005] A Z-axis vibration motor includes a cylindrical outer shell with one open end, a plate-shaped cover, an oscillator assembly, a stator assembly, and an elastic element. The outer shell and the cover are fastened together to form an accommodating space. The stator assembly is fixed to the inner surface of the cover. The oscillator assembly is elastically suspended in the accommodating space by the elastic element. The oscillator assembly and the stator assembly are spaced vertically apart. The open free end of the outer shell is bent outward to form a flange parallel to the cover. The joint between the flange and the cover is coated with a first sealant. A first notch is provided on the free edge of the outer shell. The cover includes a circular body and a support portion extending parallel to the body. The support portion is correspondingly provided with the first notch and extends out of the outer shell.

[0006] Preferably, the outer diameter of the flange is the same as the outer diameter of the main body.

[0007] Preferably, the stator assembly includes a flexible circuit board and a coil. The flexible circuit board includes an internal power terminal and an external power terminal. The internal power terminal is fixed to the main body, and the external power terminal extends from the first notch and is fixed to the support.

[0008] Preferably, the first notch, the external electrical terminal, and the support portion fully cover the second sealant portion.

[0009] Preferably, the height of the outer casing is set to 1.35±1mm, and the diameter of the outer casing is set to 4.0±1mm.

[0010] Preferably, the outer diameter of the flange is smaller than the outer diameter of the main body.

[0011] Preferably, the outer diameter of the flange is larger than the outer diameter of the main body.

[0012] Preferably, the first sealant portion and the second sealant portion are integrally coated.

[0013] Compared with the prior art, this utility model provides a Z-axis vibration motor with a simple structure. The Z-axis vibration motor adapts the flange shape of the cover and the outer shell to ensure the welding stability of the outer shell and the cover. The sealant is applied at the joint between the flange and the cover to improve the overall sealing performance of the Z-axis vibration motor. At the same time, by setting the outer diameters of the cover and the flange to be different, not only can the amount of sealant be increased, but also the sealant overflow can be prevented, thereby improving the vibration performance of the Z-axis vibration motor. Attached Figure Description

[0014] Figure 1 This is an exploded structural diagram of the outer shell, cover, flexible circuit board, and sealant of the first embodiment.

[0015] Figure 2 This is a cross-sectional view of the Z-axis vibration motor according to the first embodiment.

[0016] Figure 3 This is a cross-sectional view of the Z-axis vibration motor according to the second embodiment.

[0017] Figure 4 This is a cross-sectional view of the Z-axis vibration motor according to the third embodiment.

[0018] Wherein: 1-outer shell; 10-flange; 11-notch; 2-cover; 20-main body; 21-support part; 30-flexible circuit board; 31-coil; 40-mass block; 41-pole plate; 42-magnet; 43-damping component; 5-elastic component; 6, 6'-sealant. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] The structure of a Z-axis vibration motor according to the first embodiment of this utility model is as follows: Figure 1 and Figure 2 As shown, the device includes a cylindrical outer shell 1 with one end open, a plate-shaped cover 2, a stator assembly 3, an oscillator assembly 4, and an elastic element 5. The height of the outer shell is set to 1.35±1mm, and the diameter of the outer shell is set to 4.0±1mm. The outer shell 1 and the cover 2 are made of metal. The outer shell 1 and the cover 2 are fastened together to form an accommodating space. The stator assembly (not shown) is fixed to the inner surface of the cover. The oscillator assembly 4 is connected to the inner wall of the outer shell through the elastic element 5 and is elastically suspended in the accommodating space. The oscillator assembly 4 and the stator assembly 3 are arranged vertically at intervals. The elastic element 5 has a cone-shaped structure and includes at least three spiral elastic arms (not shown) to better realize the rebound and reset function of the elastic element 5 on the oscillator assembly 4.

[0021] The open free end (not shown) of the outer shell 1 bends outward to form a flange 10 that is parallel to the cover body 2. A first notch 11 is provided at the free end edge of the outer shell 1. The cover body 2 includes a circular main body 20 and an integrally square support part 21 that extends parallel to the main body 20. A first sealant part 6 is applied to the joint between the flange 10 and the main body 20. The support part 21 is correspondingly provided with the first notch 11 and extends out of the outer shell 1. In this embodiment, the outer diameter of the flange 10 is the same as the outer diameter of the main body 20. When the outer shell 1 with the flange 10 is welded to the main body 20, it can be done on the side perpendicular to the outer shell 1 or on the top surface perpendicular to the outer shell 1, which provides more options and simplifies the assembly process.

[0022] The stator assembly (not shown) includes a flexible circuit board 30 and an annular coil 31. The flexible circuit board 30 is attached to the inner surface of the cover 2. The flexible circuit board 30 includes an internal power terminal (not shown) and an external power terminal (not shown). The internal power terminal (not shown) is fixed to the main body 20, and the external power terminal extends from the notch 11 and is fixed to the support 21. The notch 11, the external power terminal and the support 21 completely cover the second sealant portion 6' to prevent impurities from entering the housing space of the Z-axis vibration motor from the joint between the notch 11 and the main body 20.

[0023] The oscillator assembly 4 includes an annular mass block 40 with a circular perforation (not shown) in the middle, an electrode plate 41 covering and fixed on the perforation, a magnet 42 fixed at the center of the lower surface of the electrode plate 41, and a damping member 43 fixed at the center of the upper surface of the electrode plate 41. The magnet 42 is cylindrical and is evenly spaced in the perforation. The coil 31 is located in the gap (not shown) between the magnet 42 and the inner wall of the perforation. The thickness of the coil 31 is less than the width of the gap, so that during the reciprocating motion of the oscillator assembly 4, the magnet 42 moves up and down in the inner ring of the coil 31, and the gap serves to allow the coil 31 to move. One end of the elastic member 5 is connected and fixed to the bottom surface of the inner wall of the outer shell 1, and the other end is connected and fixed to the electrode plate 41, thereby suspending the oscillator assembly 4 in the accommodating space.

[0024] The structure of a Z-axis vibration motor according to the second embodiment of this utility model is as follows: Figure 3 As shown, based on the first embodiment, the outer diameter of the flange 10 is smaller than the outer diameter of the main body 20. After the flange 10 of the outer shell 1 is welded and fixed to the main body 20 of the cover 2, the joint between the flange 10 and the main body 20 is coated with the first sealant part 6. By setting the outer diameters of the cover 2 and the flange 10 differently, not only can the amount of sealant be increased, but also the sealant overflow can be prevented, thereby improving the vibration performance of the Z-axis vibration motor. At the same time, the second sealant part 6' is fully covered at the positions of the notch 11, the external power terminal and the support part 21 to prevent impurities from entering the accommodating space of the Z-axis vibration motor from the notch 11 or from the joint between the flange 10 and the main body 20, thereby ensuring the overall sealing of the Z-axis vibration motor and achieving the purpose of waterproofing and dustproofing the Z-axis vibration motor.

[0025] The structure of a Z-axis vibration motor according to the third embodiment of this utility model is as follows: Figure 4 As shown, as a second alternative, the outer diameter of flange 10 is larger than the outer diameter of body 20. After flange 10 of housing 1 is welded and fixed to body 20 of cover 2, the joint between flange 10 and body 20 is coated with first sealant 6. By setting the outer diameters of cover 2 and flange 10 differently, not only can the amount of sealant be increased, but also the sealant overflow can be prevented, thereby improving the vibration performance of Z-axis vibration motor. At the same time, the second sealant 6' is fully covered at the notch 11, external power terminal and support 21 to prevent impurities from entering the housing space of Z-axis vibration motor from notch 11 or from the joint between flange 10 and body 20, ensuring the overall sealing of Z-axis vibration motor, so as to achieve the purpose of waterproofing and dustproofing Z-axis vibration motor.

[0026] The sealant in this invention can be a thermosetting adhesive or a UV adhesive, etc. Preferably, the first sealing part 6 and the second sealing part 6' are integrally coated to save the coating process of the Z-axis vibration motor and reduce costs. Furthermore, depending on the end customer's needs, when the outer shell 1 and cover 2 of the Z-axis vibration motor are made of plastic, they are fixed by ultrasonic welding; when they are made of metal, they are fixed by laser welding. If the end customer does not require high stability for the Z-axis vibration motor in its final application, the outer shell 1 and cover 2 can be directly connected and fixed by adhesive coating to save the assembly process of the Z-axis vibration motor and reduce costs.

[0027] It should be noted that in the description of this utility model, the terms "upper", "lower", "front", "rear", "left", "horizontal direction", "vertical direction", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A Z-axis vibration motor, comprising a cylindrical outer shell with one open end, a plate-shaped cover, a vibrator assembly, a stator assembly, and an elastic element, wherein the outer shell and the cover are fastened together to form an accommodating space, the stator assembly is fixed to the inner surface of the cover, the vibrator assembly is elastically suspended in the accommodating space by the elastic element, and the vibrator assembly and the stator assembly are arranged vertically at intervals, characterized in that... The free end of the outer shell bends outward to form a flange parallel to the cover body. The joint between the flange and the cover body is coated with a first sealant. A first notch is provided on the free edge of the outer shell. The cover body includes a circular body and a support portion extending parallel to the body. The support portion is correspondingly provided with the first notch and extends out of the outer shell.

2. The Z-axis vibration motor according to claim 1, characterized in that, The outer diameter of the flange is the same as the outer diameter of the main body.

3. The Z-axis vibration motor according to claim 2, characterized in that, The stator assembly includes a flexible circuit board and a coil. The flexible circuit board includes an internal power terminal and an external power terminal. The internal power terminal is fixed to the main body, and the external power terminal extends from the first notch and is fixed to the support.

4. The Z-axis vibration motor according to claim 3, characterized in that, The first notch, the external power terminal, and the support portion completely cover the second sealant portion.

5. The Z-axis vibration motor according to claim 1, characterized in that, The height of the outer casing is set to 1.35±1mm, and the diameter of the outer casing is set to 4.0±1mm.

6. The Z-axis vibration motor according to claim 4, characterized in that, The outer diameter of the flange is smaller than the outer diameter of the main body.

7. The Z-axis vibration motor according to claim 4, characterized in that, The outer diameter of the flange is larger than the outer diameter of the main body.

8. The Z-axis vibration motor according to claim 4, 6, or 7, characterized in that, The first sealant portion and the second sealant portion are integrally sealed.

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