Lra electromagnet module

By introducing silicon steel sheets and induction coil reinforcement devices into the LRA electromagnet module, the problems of slow response and high energy consumption are solved, achieving low power consumption, high precision vibration control and diverse tactile feedback, which is suitable for smart devices.

CN224682882UActive Publication Date: 2026-08-25WUXI SIHAI ELECTRONICS TECH CO LTD
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Patent Information

Application Number
CN202522026621.3
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-09-22
Publication Date
2026-08-25
Estimated Expiration
2035-09-22

AI Technical Summary

Technical Problem

Existing LRA electromagnet modules suffer from slow response, high energy consumption, and insufficient vibration feedback during use.

Method used

A strengthening device, including silicon steel sheets and induction coils, is used to connect to the assembly frame via welded pins, forming a low-power electromagnet module structure. This optimizes the signal transmission path to improve response speed and vibration control accuracy.

Benefits of technology

It achieves low power consumption, fast response and high precision vibration control, provides diverse tactile feedback, and is suitable for various application scenarios.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to LRA electromagnet module technical field, concretely for LRA electromagnet module, including assembly framework, the surface of assembly framework is provided with reinforcing device, and reinforcing device includes silicon steel sheet, and silicon steel sheet sets up in the recess of assembly framework inside, and the outside fixed connection of assembly framework has a plurality of welding pin, and welding pin is located one side of silicon steel sheet, and the surface of silicon steel sheet is provided with two induction coils, and induction coil is located assembly framework's inside, and one end of two induction coils and the surface installation connection of partial welding pin, the utility model discloses, through setting up reinforcing device, and LRA electromagnet module has lower power consumption, and LRA works under the resonant frequency, and energy consumption is lower, and vibration effect is better, and vibration control precision is higher, can provide diversified tactile feedback experience, and response time is faster, and start and stop are very fast, and vibration feeling can better match various use scenes.
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Description

Technical Field

[0001] This utility model relates to the field of LRA electromagnet module technology, and more particularly to LRA electromagnet modules. Background Technology

[0002] LRA, also known as linear resonant actuator, is a type of vibration motor that generates vibration through linear motion. It has a faster response time and higher vibration control accuracy. By operating near the resonant frequency, it achieves efficient energy conversion, thereby generating tactile feedback. It is mainly used in intelligent devices with touch screens, such as laptops, tablets, smartphones, and smartwatches.

[0003] When workers need to control electronic devices through touch, they install LRA electromagnet modules inside the electronic devices so that they can control them. However, existing LRA electromagnet modules have a long start-up time and a small vibration feedback during use. At the same time, LRA electromagnet modules consume a lot of energy during use, which leads to slow response when workers use electronic devices. Utility Model Content

[0004] The purpose of this invention is to solve the problem of slow response when workers use electronic devices in the prior art, and to propose an LRA electromagnet module.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: an LRA electromagnet module, including an assembly frame, the surface of which is provided with a reinforcing device, the reinforcing device including a silicon steel sheet, the silicon steel sheet being disposed in a groove on the inner side of the assembly frame, a plurality of welding pins being fixedly connected to the outer side of the assembly frame, the welding pins being located on one side of the silicon steel sheet, two induction coils being disposed on the surface of the silicon steel sheet, the induction coils being located on the inner side of the assembly frame, and one end of the two induction coils being mounted and connected to the surface of a portion of the welding pins.

[0006] Compared with the prior art, the advantages and positive effects of this utility model are as follows: In this invention, by setting up a reinforcement device, when the worker needs to enhance the touch function of the electronic device, the worker installs the induction coil on a silicon steel sheet, installs the silicon steel sheet on the assembly frame and positions it with bolts, installs a welding pin on one end of the induction coil, installs the assembly frame on the motherboard, and uses bolts to install the assembly frame on the motherboard. The worker then welds the welding pin. Subsequently, when the worker uses the electronic device, the worker touches the screen, the screen transmits the signal through the circuit to the welding pin, the welding pin transmits the signal to the induction coil, and the induction coil reinforces the signal. By setting up the reinforcement device, the LRA electromagnet module has lower power consumption: the LRA operates at the resonant frequency, resulting in lower energy consumption; better vibration effect: higher vibration control precision, providing a diverse tactile feedback experience; faster response time: very fast start and stop, and the vibration is responsive and can better match various usage scenarios. Attached Figure Description

[0007] Figure 1 This invention provides a three-dimensional structural schematic diagram of an LRA electromagnet module. Figure 2 This invention provides a schematic diagram of the reinforcing device structure for the LRA electromagnet module. Figure 3 This utility model provides a bottom view structural diagram of the LRA electromagnet module; Figure 4 This invention provides a side view of the LRA electromagnet module. Figure 5 This is a side view of the LRA electromagnet module proposed in this utility model.

[0008] Legend: 1. Assemble the frame; 2. Induction coil; 3. Silicon steel sheet; 4. Weld the pins. Detailed Implementation

[0009] Please see Figures 1-5 This utility model provides a technical solution: an LRA electromagnet module, including an assembly frame 1, the surface of which is provided with a reinforcing device.

[0010] The specific setup and function of its strengthening device will be explained in detail below.

[0011] In this embodiment: the strengthening device includes a silicon steel sheet 3, which is disposed in a groove inside the assembly frame 1. Multiple welding pins 4 are fixedly connected to the outside of the assembly frame 1. The welding pins 4 are located on one side of the silicon steel sheet 3. Two induction coils 2 are disposed on the surface of the silicon steel sheet 3. The induction coils 2 are located inside the assembly frame 1. One end of the two induction coils 2 is installed and connected to the surface of part of the welding pins 4.

[0012] In this embodiment, the enhancement device has the following advantages: lower power consumption; the LRA operates at the resonant frequency, resulting in lower energy consumption and better vibration effect; higher vibration control precision, providing a diverse tactile feedback experience with faster response time; very fast start and stop, and the vibration sensation is more responsive and can better match various usage scenarios.

[0013] Working Principle: By setting up an enhancement device, when the operator needs to enhance the touch function of the electronic device, the operator installs the induction coil 2 on the silicon steel sheet 3, installs the silicon steel sheet 3 on the assembly frame 1 and positions it with bolts, installs a welding pin 4 on one end of the induction coil 2, installs the assembly frame 1 on the motherboard, and welds the welding pin 4. Subsequently, when the operator uses the electronic device, the operator touches the screen, and the screen transmits the signal to the welding pin 4 through the circuit. The welding pin 4 transmits the signal to the induction coil 2, and the induction coil 2 enhances the signal. By setting up the enhancement device, the LRA electromagnet module has lower power consumption: the LRA works at the resonant frequency, resulting in lower energy consumption; better vibration effect: higher vibration control precision, providing a diverse tactile feedback experience; faster response time: very fast start and stop, and the vibration is more responsive to various usage scenarios.

Claims

1. An LRA electromagnet module, comprising an assembly frame (1), characterized in that: The surface of the assembly frame (1) is provided with a reinforcing device, which includes a silicon steel sheet (3). The silicon steel sheet (3) is disposed in a groove on the inner side of the assembly frame (1). A plurality of welding pins (4) are fixedly connected to the outer side of the assembly frame (1). The welding pins (4) are located on one side of the silicon steel sheet (3). Two induction coils (2) are disposed on the surface of the silicon steel sheet (3). The induction coils (2) are located on the inner side of the assembly frame (1). One end of the two induction coils (2) is installed and connected to the surface of a portion of the welding pins (4).