Novel linear motor
By using plastic brackets and plastic sleeves to replace metal shrapnel in linear motors, the problems of metal shrapnel fatigue failure and vibration noise under high-frequency vibration are solved, and more stable vibration and longer service life are achieved. It is suitable for portable electronic products.
Patent Information
- Application Number
- CN202420973058.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-07
- Publication Date
- 2025-01-03
- Estimated Expiration
- 2034-05-07
AI Technical Summary
The existing linear vibration motors are prone to fatigue failure under high-frequency vibration, and due to the small internal resistance of the metal, it leads to vibration noise.
Plastic brackets are used to replace traditional metal shrapnel and are integrally formed through plastic sleeves to ensure connection reliability and reduce noise. The plastic brackets are arc or S-shaped to reduce lateral vibration resistance.
It solves the problem of fatigue failure of metal shrapnel under high-frequency vibration, reduces vibration noise, improves the stability and service life of the motor, and is suitable for portable consumer electronic products.
Smart Images
Figure CN222301612U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of motors, in particular to a novel linear motor. Background Art
[0002] With the development of electronic technology, portable consumer electronic products are popular among people, such as mobile phones, handheld game consoles, navigation devices or handheld multimedia entertainment devices. These electronic products generally use linear vibration motors for system feedback, such as incoming call prompts, message prompts, navigation prompts on mobile phones, vibration feedback on game consoles, etc.
[0003] The vibration motor of the related technology includes a base with a receiving space, an electromagnetic drive unit located in the receiving space and fixed to the base, and a vibration unit. The vibration unit includes a magnetic conductive plate and an elastic component that supports the magnetic conductive plate on the base and is suspended above the electromagnetic drive unit. When the electromagnetic drive unit is energized, a point magnet is formed, which forms an alternating suction force on the magnetic conductive plate. Under the joint action of the elastic supporting force of the elastic component, the magnetic conductive plate vibrates up and down.
[0004] In the prior art, metal springs are commonly used as elastic brackets. However, in actual applications, the inventors have found that metal elastic brackets require welding to connect the magnetic plate to the base, but fatigue failure is prone to occur under high-frequency vibration. In addition, due to the small internal resistance of metal, vibration noise is easily generated during use. Therefore, the utility model proposes a new linear motor. Summary of the invention
[0005] The utility model provides a novel linear motor to solve the problems mentioned in the above background technology.
[0006] The purpose of the utility model is achieved by the following methods:
[0007] A novel linear motor comprises a shell, a vibrator assembly arranged in the shell, and a coil matched with the vibrator assembly. The vibrator assembly is suspended in the shell through a plastic bracket.
[0008] Furthermore, the outer sides of the shell and the vibrator assembly are respectively provided with plastic sleeves integrally formed with the plastic bracket.
[0009] Furthermore, the vibrator assembly includes a magnet and an inner frame for accommodating the magnet, and the plastic sleeve is wrapped around the inner frame.
[0010] Furthermore, the plastic bracket is arranged in an arc or S shape.
[0011] The utility model provides a novel linear motor, which completely solves the problem that the metal shrapnel is prone to fatigue failure under high-frequency vibration by replacing the traditional metal shrapnel with a plastic bracket, and effectively reduces the generation of noise. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 This is a first cross-sectional view of a novel linear motor of the utility model;
[0013] Figure 2 This is a second cross-sectional view of a novel linear motor of the utility model;
[0014] The reference numerals in the figure are: 1-shell, 2-coil, 3-plastic bracket, 4-magnet, 5-inner frame, 6-plastic sleeve. DETAILED DESCRIPTION
[0015] The present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.
[0016] In this embodiment, refer to Figure 1-Figure 2 A novel linear motor is specifically implemented, including a shell 1, a vibrator assembly arranged in the shell 1, and a coil 2 matched with the vibrator assembly. The vibrator assembly is suspended in the shell 1 through a plastic bracket 3.
[0017] In this embodiment, the vibrator assembly includes a magnet 4 and an inner frame 5 for accommodating the magnet 4. Furthermore, the outer sides of the housing 1 and the inner frame 5 are respectively provided with a plastic sleeve 6 integrally formed with the plastic bracket 3, and the plastic sleeve 6 and the plastic bracket 3 are integrally injection molded, thereby ensuring dimensional accuracy and reliability of the connection of the plastic bracket 3.
[0018] like Figure 2 As shown, in this embodiment, the plastic bracket 3 is arranged in an arc shape, and its arc shape can reduce the resistance of the lateral vibration of the plastic bracket 3 and increase the vibration amplitude. Further, the plastic bracket 3 can also be in other shapes, such as a "I" shape or an "S" shape, etc. The shape of the plastic bracket 3 depends on the vibration direction and vibration amplitude of the vibrator assembly to ensure that a stable supporting force can be provided to ensure the stable vibration of the vibrator assembly.
[0019] In this embodiment, the plastic bracket 3 and the plastic sleeve 6 are preferably made of rubber (or silicone) with the ability to quickly restore to the original state and are integrally injection molded. Further, other polymer materials that can quickly restore to a state close to the original state and size can also be selected. For example: styrene thermoplastic elastomer, polyurethane thermoplastic elastomer, polyolefin thermoplastic elastomer, metallocene polyolefin elastomer, polyamide thermoplastic elastomer, etc.
[0020] The utility model provides a novel linear motor, which adopts a plastic bracket 3 to replace the traditional metal spring, not only solves the problem that the metal spring is prone to fatigue failure under high-frequency vibration, but also the plastic bracket 3 and the outer side of the housing 1 and the vibrator assembly are integrally formed with the plastic sleeve 6, which can effectively reduce vibration noise and improve the use experience of the motor. In addition, the internal resistance, aging resistance and chemical corrosion resistance of the plastic material are also better than those of the metal material, so that the linear motor of the utility model has a longer service life and better stability.
[0021] In summary, the linear motor of the utility model has the advantages of simple structure, easy manufacturing, stable performance, long service life, etc., and is suitable for various portable consumer electronic products, such as mobile phones, handheld game consoles, navigation devices or handheld multimedia entertainment equipment.
[0022] The above is only a preferred embodiment of the utility model, and does not constitute any form of limitation to the utility model. Although the utility model is disclosed as a preferred embodiment as above, it is not used to limit the utility model. Any technician familiar with the profession can make some changes or modifications to equivalent embodiments of equivalent changes by using the technical contents disclosed above without departing from the scope of the technical solution of the utility model. However, any simple modifications, equivalent changes and modifications made to the above embodiments according to the technical implementation of the utility model without departing from the content of the technical solution of the utility model are within the scope of the technical solution of the utility model.
Claims
1. A novel linear motor, comprising a housing (1), a vibrator assembly arranged in the housing (1), and a coil (2) cooperating with the vibrator assembly, characterized in that: The vibrator assembly is suspended in the housing (1) via a plastic bracket (3).
2. According to claim 1, a novel linear motor is characterized in that: The outer sides of the housing (1) and the vibrator assembly are respectively provided with plastic sleeves (6) integrally formed with the plastic bracket (3).
3. According to claim 2, a novel linear motor is characterized in that: The vibrator assembly comprises a magnet (4) and an inner frame (5) for accommodating the magnet (4), and the plastic sleeve (6) is wrapped around the inner frame (5).
4. A novel linear motor according to any one of claims 1 to 3, characterized in that: The plastic support (3) is arranged in an arc or S shape.