Linear vibration motor

Abstract

The utility model relates to the technical field of vibration motors, and discloses a linear vibration motor, which comprises a shell with an internal accommodating space and a flexible circuit board extending out of the shell from the accommodating space, and is characterized in that the shell comprises a cuboid upper shell with an opening at one end and a plate-shaped lower shell matched and buckled with the opening end of the upper shell; the upper shell comprises a rectangular top wall and side walls which are vertically bent and extend in the same direction from the periphery of the top wall, a notch is formed in the free end edge of each side wall, each side wall comprises a long side wall and a short side wall, and positioning concave parts are symmetrically and concavely arranged at the diagonal positions of the long side walls; the flexible circuit board comprises an external power supply end, and the external power supply end extends out of the shell from the gap; and the length of the positioning concave part is 3.2 + / -0.05 mm, the width of the positioning concave part is 1.2 + / -0.05 mm, and the depth of the positioning concave part is 0.03 + / -0.02 mm. The vibration motor is simple in structure, and the housing is easy to process.

Description

Technical Field

[0001] This utility model relates to the field of vibration motor technology, and in particular to a linear 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 versatility of linear vibration motors are becoming increasingly stringent.

[0003] Existing linear vibration motors typically include a housing, a cover, an oscillator, a stator, and springs. The housing and cover are welded together to form an accommodating space, within which the oscillator, stator, and springs are placed. The oscillator includes a mass and a magnet, while the stator includes a coil and a flexible circuit board. Magnets are positioned on the mass corresponding to the coil locations. Springs are positioned between the mass and the housing sidewalls on both sides, elastically suspending the oscillator within the accommodating space. Simultaneously, the coil is electrically connected to the flexible circuit board, which is connected to an external power source, changing the direction of the current in the coil and thus causing the mass to vibrate. The working principle of existing linear vibration motors is to convert electrical energy into linear mechanical energy, which is used to move the magnet through the repulsion or attraction of the coil, thereby causing the mass to vibrate. However, with changing usage requirements and the diverse external power supply methods for the flexible circuit board, existing linear motors suffer from poor compatibility between the housing and cover, affecting vibration performance.

[0004] Therefore, there is an urgent need for a linear vibration motor that is simple in structure and easy to manufacture to solve the technical problems of existing vibration motors. Utility Model Content

[0005] The purpose of this utility model is to provide a linear vibration motor with a simple structure and an easily machinable housing. The specific technical solution is as follows:

[0006] A linear vibration motor includes a housing with an internal accommodating space and a flexible circuit board extending from the accommodating space out of the housing. The housing includes a cuboid upper shell with an opening at one end and a plate-shaped lower shell adapted to fasten to the opening end of the upper shell. The upper shell includes a rectangular top wall and side walls that bend vertically and extend from the periphery of the top wall in the same direction. The free edge of the side wall is provided with a notch. The side wall includes a long side wall and a short side wall. The long side wall has symmetrically recessed positioning recesses at diagonal positions. The flexible circuit board includes an external power supply terminal that extends out of the housing from the notch. The positioning recesses have a length of 3.2±0.05mm, a width of 1.2±0.05mm, and a depth of 0.03±0.02mm.

[0007] Preferably, the notch is located on one long side wall of the upper shell and is spaced apart from the positioning recess.

[0008] Preferably, the external power supply terminal is bent from the notch and attached to the outer surface of the long side wall.

[0009] Preferably, the external power supply terminal is bent from the notch and attached to the outer surface of the lower shell.

[0010] Preferably, the notch is located on one long sidewall of the upper shell and away from the positioning recess on the same side; the flexible circuit board further includes a connecting portion, and the external power supply terminal is integrally connected to the free end of the connecting portion.

[0011] Preferably, the connecting portion is bent from the notch and attached to the outer wall surface of the adjacent long side wall and short side wall.

[0012] Preferably, the connecting portion is bent from the notch and attached to the outer surface of the long side wall, and the external power supply terminal is bent from the connecting portion and attached to the outer surface of the adjacent short side wall.

[0013] Preferably, the connecting portion is bent from the notch and attached to the outer wall surface of the adjacent long side wall and top wall.

[0014] Preferably, the notch is located on one short sidewall of the upper shell.

[0015] Preferably, the area where the notch joins the flexible circuit board is covered with sealant.

[0016] Compared with the prior art, this utility model provides a linear vibration motor with a simple structure, which makes the upper and lower shells easy to process. The edges of the upper shell are adapted to the shape of the lower shell, ensuring the stability of the shell welding and guaranteeing the vibration performance of the vibration motor. The flexible circuit board can be installed in different ways after exiting the shell to meet the connection requirements of the flexible circuit board and the external power supply of the terminal product at different locations, realizing the diversification of the external power supply of the flexible circuit board. Attached Figure Description

[0017] Figure 1 This is a perspective view of the linear vibration motor according to the first embodiment.

[0018] Figure 2 This is a perspective view of the linear vibration motor according to the second embodiment.

[0019] Figure 3 This is a perspective view of the linear vibration motor according to the third embodiment.

[0020] Figure 4 This is a perspective view of the linear vibration motor according to the fourth embodiment.

[0021] in:

[0022] 1-Upper shell; 10-Top wall; 11-Long side wall; 12-Short side wall; 13-Positioning recess; 14-Notch;

[0023] 2-Lower shell;

[0024] 3-Flexible circuit board; 30-External power supply terminal; 31-Connecting part. Detailed Implementation

[0025] 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.

[0026] The structure of a linear vibration motor according to the first embodiment of this utility model is as follows: Figure 1 As shown, the device includes a housing (not shown) with an internal accommodating space (not illustrated) and a flexible circuit board 3 extending from the accommodating space. The housing includes a cuboid upper shell 1 with an opening at one end (not shown) and a plate-shaped lower shell 2 adapted to fasten to the opening end of the upper shell 1. The upper shell 1 includes a rectangular top wall 10 and side walls (not shown) that extend perpendicularly from the periphery of the top wall 10 in the same direction. The free edge of the side wall has a notch 14. The side wall includes a long side wall 11 and a short side wall 12. The long side wall 11 has symmetrically recessed positioning recesses 13 at opposite diagonal positions. The positioning recesses 13 enable the accommodating space to... The positioning and connection between the inner spring piece (not shown) and the long side wall 11 is more convenient. The length of the positioning recess 13 is set to 3.2±0.05mm, the width is set to 1.2±0.05mm, and the depth is set to 0.03±0.02mm. The flexible circuit board 3 includes an external power supply terminal 30. The external power supply terminal 30 extends out of the housing from the notch 14 and connects to an external power supply (not shown) to enable the linear vibration motor to be powered. The notch 14 is located on one side of the long side wall 11 of the upper shell 1 and is spaced apart from the positioning recess 13, so that the external power supply terminal 30 avoids the positioning recess 13.

[0027] The structure of a linear vibration motor according to the second embodiment of this utility model is as follows: Figure 2 As shown, based on the different location requirements of the external power supply of the flexible circuit board for the terminal product, on the basis of the first embodiment, the external power supply end 30 is bent from the notch 14 and attached to the outer surface of the long side wall 11 to achieve effective bonding and installation between the external power supply end 30 and the upper shell 1.

[0028] The structure of a linear vibration motor according to the third embodiment of this utility model is as follows: Figure 3 As shown, based on the different requirements of the terminal product for the external power supply of the flexible circuit board, on the basis of the first embodiment, the notch 14 is located on one side of the long sidewall 11 of the upper shell 1 and away from the positioning recess 13 on the same side. The flexible circuit board 3 also includes a connecting part 31. The external power supply end 30 is integrally connected to the free end of the connecting part 31. The connecting part 31 is bent and simultaneously attached to the outer wall surface of the adjacent long sidewall 11 and the top wall 12 to achieve effective bonding and installation between the flexible circuit board 3 and the upper shell 1, which helps to achieve a stable electrical connection between the external power supply end 30 and the external power supply.

[0029] The structure of a linear vibration motor according to the fourth embodiment of this utility model is as follows: Figure 4 As shown, based on the different requirements of the terminal product for the external power supply of the flexible circuit board, the notch 14 is located at the free edge of the short sidewall 12 on one side of the upper shell 1, and the external power supply end 30 extends out of the shell from the short sidewall 12.

[0030] The structure of a linear vibration motor according to the fifth embodiment of this utility model is not shown. Based on the different requirements of the terminal product for the external power supply of the flexible circuit board, the external power supply end 30 is bent from the notch 14 and attached to the outer surface of the lower shell 2 based on the second embodiment.

[0031] The structure of a linear vibration motor according to the sixth embodiment of this utility model is not shown. Based on the different requirements of the terminal product for the external power supply of the flexible circuit board, the bonding and mounting method of the connecting part 31 is simplified on the basis of the third embodiment. The connecting part 31 is bent from the notch 14 and attached to the outer wall surface of the long side wall 11.

[0032] The structure of a linear vibration motor according to the seventh embodiment of this utility model is not shown. Based on the different requirements of the terminal product for the external power supply of the flexible circuit board, as an alternative to the third embodiment, the connecting part 31 is bent from the notch 14 and simultaneously attached to the outer wall surface of the adjacent long side wall 11 and the top wall 10.

[0033] The structure of a linear vibration motor according to the eighth embodiment of this utility model is not shown. Based on the different requirements of the terminal product for the external power supply of the flexible circuit board, the connecting part 31 is bent from the notch 14 and attached to the outer wall surface of the long side wall 11, and the external power supply end 30 is bent from the connecting part 31 and attached to the outer surface of the adjacent short side wall 12.

[0034] The structure of a linear vibration motor according to the ninth embodiment of this utility model is not shown. Based on the different requirements of the terminal product for the external power supply of the flexible circuit board, and based on the sixth embodiment, the connecting part 31 is bent from the notch 14 and attached to the outer surface of the long side wall 11, and the external power supply end 30 is bent and attached to the outer surface of the adjacent top wall 10.

[0035] The structure of a linear vibration motor according to the tenth embodiment of this utility model is not shown. Based on the different requirements of the terminal product for the external power supply of the flexible circuit board, on the basis of the fourth embodiment, the external power supply end 30 is bent from the notch 14 and attached to the short side wall 12.

[0036] The linear vibration motor of this utility model, with its flexible circuit board 3 having different installation methods after exiting the housing, meets the connection requirements of the external power supply terminal 30 and the external power supply of the terminal product at different locations, realizing the diversification of the external power supply of the flexible circuit board 3; the upper shell 1 and the lower shell 2 are welded together. When the upper shell 1 and the lower shell 2 are made of metal, the upper shell 1 and the lower shell 2 are integrally stamped and fixed by laser welding; when the upper shell 1 and the lower shell 2 are made of plastic, the upper shell 1 and the lower shell 2 are integrally injection molded and fixed by ultrasonic welding. Preferably, the position where the upper notch 14 and the flexible circuit board 3 are joined is covered with sealant (not shown) to prevent impurities from entering the accommodating space from the notch 14, ensuring the sealing of the linear vibration motor, so as to achieve the purpose of waterproofing and dustproofing the linear vibration motor.

[0037] 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.

[0038] 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 linear vibration motor comprising a housing having an internal accommodation space and a flexible circuit board which projects from the housing from the accommodation space, characterized in that, The housing includes a cuboid upper shell with one open end and a plate-shaped lower shell adapted to fasten to the open end of the upper shell. The upper shell includes a rectangular top wall and side walls that bend vertically and extend from the periphery of the top wall in the same direction. The free edge of the side wall is provided with a notch. The side wall includes a long side wall and a short side wall. The long side wall has symmetrically recessed positioning recesses at opposite diagonal positions. The flexible circuit board includes an external power supply terminal, which extends out of the housing from the notch. The length of the positioning recess is set to 3.2±0.05mm, the width is set to 1.2±0.05mm, and the depth is set to 0.03±0.02mm.

2. The linear vibration motor of claim 1, wherein, The notch is located on one long side wall of the upper shell and is spaced apart from the positioning recess.

3. The linear vibration motor of claim 2, wherein, The external power supply terminal is bent from the notch and attached to the outer surface of the long side wall.

4. The linear vibration motor according to claim 2, characterized in that, The external power supply terminal is bent from the notch and attached to the outer surface of the lower shell.

5. The linear vibration motor according to claim 3, characterized in that, The notch is located on one long sidewall of the upper shell and away from the positioning recess on the same side; the flexible circuit board also includes a connecting part, and the external power supply terminal is integrally connected to the free end of the connecting part.

6. The linear vibration motor according to claim 5, characterized in that, The connecting part is bent from the notch and attached to the outer wall surface of the adjacent long side wall and short side wall.

7. The linear vibration motor according to claim 5, characterized in that, The connecting part is bent from the notch and attached to the outer surface of the long side wall, and the external power supply terminal is bent from the connecting part and attached to the outer surface of the adjacent short side wall.

8. The linear vibration motor according to claim 5, characterized in that, The connecting part is bent from the notch and attached to the outer wall surface of the adjacent long side wall and top wall.

9. The linear vibration motor according to claim 1, characterized in that, The notch is located on one short sidewall of the upper shell.

10. The linear vibration motor according to any one of claims 1-9, characterized in that, The area where the notch joins the flexible circuit board is covered with sealant.

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