Linear motor with Z-shaped elastic damping piece
By connecting the stator and mover with a Z-shaped elastic damping element, the problem of unintended vibration in the Z-direction of the linear motor is solved, resulting in more uniform tactile feedback, reduced noise, and improved user experience.
Patent Information
- Application Number
- CN202520014863.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-05
- Publication Date
- 2025-12-16
- Estimated Expiration
- 2035-01-05
AI Technical Summary
Existing linear motors generate unexpected vibrations in the direction perpendicular to the screen (z-axis), resulting in significant differences in the uniformity and intensity of haptic feedback in different areas of the screen, which affects the user experience.
The stator and mover are connected by a Z-shaped elastic damper, which is designed to be close to 90 degrees to the two sides connected to the vertical side, to absorb and dissipate vibration energy and reduce unexpected vibration in the Z direction.
It effectively reduces unintended vibrations in the Z-direction, improves the quality of haptic feedback, reduces noise, and enhances the user experience.
Smart Images
Figure CN223680934U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to linear motor technical field especially a linear motor with Z shape elastic damping part. BACKGROUND
[0002] In modern touch screen consumer electronics products, such as smart phones, tablet computers (PAD), handheld game consoles (palm machine), linear motor is widely used as the key component of vibration and tactile feedback. Compared with the traditional rotary motor, linear motor has the advantages of fast response speed, various vibration modes and high control precision, which can provide more delicate and real tactile feedback experience for users. However, there is a significant problem in the actual application of linear motor with U-shaped damping as elastic arm, that is, unintended vibration in the direction perpendicular to the screen (z direction). This z direction vibration is particularly obvious in large screen electronic products, because the vibration energy decays quickly when it spreads from the vibration source to the surrounding, resulting in significant differences in uniformity and intensity of tactile feedback in different areas of the screen, thereby affecting the overall user experience. SUMMARY
[0003] The technical problem to be solved by the utility model is to provide a linear motor with Z shape elastic damping part, which can effectively reduce or inhibit Z direction unintended vibration and improve the tactile feedback quality of touch screen consumer electronics products.
[0004] The utility model adopts the technical scheme that a linear motor with Z shape elastic damping part, comprising a stator composed of a coil, a base and a support, and a rotor composed of a magnetic circuit, a mass block and a magnetic steel support; the stator and the rotor are connected through the Z shape elastic damping part; the Z shape elastic damping part has a vertical edge, the vertical edge is provided with a first connecting section and a second connecting section at both ends respectively; the first connecting section is connected with the lower surface of the magnetic steel support, and the second connecting section is connected with the upper surface of the coil support; the first connecting section and the second connecting section are perpendicular to the vertical edge respectively.
[0005] Further, the Z shape elastic damping part of the utility model is a rubber part, or a silica gel part, or a high molecular elastic part, or a composite material part with peek / TPE / PU glue; without additional foam damping, the purpose of increasing the frequency band is achieved.
[0006] Further, the vertical edge of the utility model has a wave-shaped arc, which can increase the stroke in the X direction, thereby increasing the vibration feeling of the motor.
[0007] Further, the vertical edge of the utility model has a reinforcing rib, which can increase the support strength and adjust the resonance frequency of the motor.
[0008] The utility model discloses a beneficial effect is, solve the defect of background art, the vertical edge of Z -shaped elastic damping piece and its two sides close to 90 degrees, ensure that material can maximumly absorb and dissipate vibration energy in Z direction, hardly have vibration in vertical direction (Z direction);Not only can significantly reduce the unexpected vibration of linear motor in Z direction, thereby effectively improve the tactile feedback experience of touch screen type consumer electronic products;And can reduce the noise caused by z -vibration, improve the overall mute performance of product. BRIEF DESCRIPTION OF DRAWINGS
[0009] Figure 1 It is the structural schematic diagram of the utility model;
[0010] Figure 2 It is the acceleration display graph of the utility model in X, Z two directions;
[0011] In the drawing: 1, coil;2, coil support;3, support;4, magnetic steel;5, magnetic steel support;6, Z -shaped elastic damping piece;7, vertical edge;8, first connecting section;9, second connecting section. DETAILED DESCRIPTION
[0012] Now combine the drawings and preferred embodiment to make further detailed description of the utility model. These drawings are all simplified schematic diagram, just with the schematic way to show the basic structure of the utility model, therefore it just shows the constitution related with the utility model.
[0013] As Figures 1-2 Shown in a kind of linear motor with Z -shaped elastic damping piece, including the stator of coil 1, base and support 3 and the rotor of magnetic circuit, mass and magnetic steel support 5;The stator and rotor are connected by Z -shaped elastic damping piece 6;The Z -shaped elastic damping piece 6 has vertical edge 7, and the first connecting section 8 and the second connecting section 9 are respectively arranged in the two ends of the vertical edge 7;The first connecting section 8 is connected with the lower surface of magnetic steel support 5, and the second connecting section 9 is connected with the upper surface of coil support 2;The first connecting section 8 and the second connecting section 9 are perpendicular to vertical edge 7 respectively.
[0014] Z -shaped elastic damping piece 6 in the embodiment, tightly connect rotor and stator, compact structure and easy to assemble. Stator can be firmly adhered to the PCB board (such as mobile phone screen, touchpad etc.) to be vibrated by glue, or fixed on coil support 2;And the rotor can be accurately placed in the corresponding position, which saves the tedious positioning step and significantly simplifies the entire installation process.
[0015] The embodiment not only has extremely simple structure, but also has minimal unexpected vibration in Z -axis direction, realizes the efficient conversion of kinetic energy to required X direction. Figure 1The arrow direction in the figure is the vibration direction. In addition, the assembling process is simple and fast, all accessories are designed according to the simple principle, and it is the optimal solution for the perfect combination of high performance and low cost.
[0016] According to other embodiments, the Z-shaped elastic damping piece 6 can be a rubber material, can be a silica gel material, can be other elastic damping materials or high analysis elastic materials, can also be a composite material with glue such as peek / TPE / PU; without additional foam addition damping, the purpose of increasing the frequency band is realized. And by changing the material, the resonance point required by the motor can be easily adjusted by changing the thickness.
[0017] According to other embodiments, the vertical edge 7 can also have a wavy arc to increase the X-direction stroke and thus increase the vibration feeling of the motor.
[0018] According to other embodiments, the vertical edge 7 can also have a reinforcing rib to increase the support strength and adjust the resonance frequency of the motor.
[0019] The above description is only a specific embodiment of the utility model, various examples do not constitute limitation to the essential content of the utility model, and the ordinary skilled in the art can modify or deform the previously described specific embodiments after reading the specification without departing from the essence and scope of the utility model.
Claims
1. Linear motor with Z-shaped elastic damper, comprising a stator consisting of a coil (1), a base and a bracket (3) and a mover consisting of a magnetic circuit, a mass and a magnet bracket (5); characterized in that: The stator and the mover are connected through a Z-shaped elastic damping piece (6); the Z-shaped elastic damping piece (6) has a vertical edge (7), the vertical edge (7) is respectively provided with a first connecting section (8) and a second connecting section (9) at two ends; the first connecting section (8) is connected with the lower surface of the magnetic steel support (5), the second connecting section (9) is connected with the upper surface of the coil support (2); the first connecting section (8) and the second connecting section (9) are perpendicular to the vertical edge (7) respectively.
2. A linear motor with Z-shaped elastic damper according to claim 1, characterized in that: The Z-shaped elastic damping piece (6) is a rubber piece, or a silica gel piece, or a high polymer elastic piece, or a composite material piece with glue added to peek / TPE / PU.
3. A linear motor with Z-shaped elastic damping members as claimed in claim 1, characterized in that: The vertical edge (7) has a wave-shaped arc.
4. A linear motor with Z-shaped elastic damper according to claim 1, characterized in that: The vertical edge (7) has a reinforcing rib.