Vibration exciter with elastic support

Abstract

The present invention relates to a vibration exciter with an elastic bracket. A PCB assembly board is arranged on one side of a cavity cover. A PCB circuit board is arranged inside the PCB assembly board. An excitation signal is input into a voice coil arranged around a primary and secondary magnets via the PCB circuit board, thereby driving a vibration seat arranged around the voice coil. The vibration is then transmitted to the support plate through the connection between the vibration seat and the support plate. After being transmitted to the elastic bracket via the support plate, the vibration of the cavity cover is driven, and the vibration of a screen connected to the bottom of the cavity cover is driven. This structural arrangement effectively reduces the resonant frequency of the exciter and increases the amplitude of the exciter. In addition, the connection between different structures is stable, thereby increasing the service life of the equipment.

Description

Technical Field

[0001] The invention relates to an exciter, in particular to a vibration exciter with an elastic bracket. Background Art

[0002] In the prior art, the vibration exciter is a system mainly composed of a vibration generator, a control and measuring device and the necessary auxiliary equipment. It is a device that obtains mechanical vibration by utilizing electric, electro-hydraulic, piezoelectric or other principles. Its principle is to input the excitation signal into a coil placed in a magnetic field to drive the workbench connected to the coil.

[0003] In the patent document 201410837936.X, the tactile speaker and display assembly is provided with a bonding plate connected to a bracket that is bonded to a vibrating object, and a vibration system is provided on the bonding plate. A flexible frame that can vibrate is provided between the brackets, and a magnetic circuit system that cooperates with the vibration system is provided in the flexible frame. The structure of the tactile speaker is optimized to have a lower resonant frequency and a higher amplitude, which effectively increases the vibration sense of the speaker. The disadvantage is that the flexible frame is made of nylon 12 material. Due to the low structural stiffness and damping of nylon 12 material itself, it is easy to generate vibrations with large amplitude and difficult to attenuate. Long-term vibration will cause structural fatigue damage and shorten the life of the equipment. Summary of the Invention

[0004] In order to solve the above problems, the present invention provides a vibration exciter with an elastic bracket, which reduces the resonant frequency of the exciter, increases the amplitude of the exciter, and has stable connections between various components.

[0005] In order to achieve the above-mentioned purpose, the vibration exciter with elastic brackets designed by the present invention mainly includes a cavity cover and a vibration seat. Support seats are symmetrically arranged on both sides of the cavity cover, elastic brackets are arranged on the inner side of the support seats, and support plates are fixed between the elastic brackets. The vibration seat is arranged upside down above the cavity cover, and the upper bottom surface of the vibration seat is connected with the lower bottom surface of the support plate. The interior of the vibration seat is hollow and cylindrical, and the vibration seat is provided with main and auxiliary magnets. The main and auxiliary magnets are provided with voice coils on the periphery. The bottom of the voice coil is fixed with the through hole opened in the middle of the cavity cover. This structural setting is achieved by arranging elastic brackets in the support seats on both sides of the cavity cover and arranging support plates between the elastic brackets, so that the vibration is transmitted to the support plate and then to the elastic bracket via the support plate, thereby driving the cavity cover to vibrate.

[0006] A further solution is to provide a cylindrical pin on the upper surface of the bottom of the vibration seat, which is riveted to the through hole in the middle of the support seat. This structure further stabilizes and effectively fixes the support plate to the support seat by riveting.

[0007] A further solution is to have connecting grooves on the opposing inner upper portions of the two elastic supports that mate with the support plates, with the ends of the support plates embedded and inserted between the two connecting grooves. The support plates are integrally injection-molded from an elastic material. This structure embeds the support plates within the inner sides of the two elastic supports, enhancing the connection strength between the two supports. Furthermore, adhesive can be used to further secure the support plates to the elastic supports.

[0008] A further solution is to semi-enclose the support base outside the elastic bracket, with a spacer for facilitating the installation of the elastic bracket defined in the middle of the support base's outer wall located on the short side of the cavity cover. A fixed elastic bracket extension extends from the support base's outer wall located on the long side of the cavity cover toward the inside of the cavity cover. The bottom of the elastic bracket is fixedly connected to the cavity cover. This structure, by designing the shape of the support base, constrains the elastic bracket from three directions and secures the bottom of the elastic bracket to the cavity cover. This effectively determines the installation position of the elastic bracket and limits its horizontal displacement, while ensuring the connection strength between the elastic bracket, the support base, and the cavity cover.

[0009] A further solution involves gluing the bottom of the elastic bracket to the cavity cover. The bracket has an overall hourglass shape, with matching hourglass-shaped slots on its interior. The bracket is constructed from a one-piece injection-molded elastic material. This design ensures optimal performance by lowering the exciter's resonant frequency and increasing its amplitude. The gluing method also ensures a secure connection while simplifying the structure and reducing assembly complexity.

[0010] A further solution is to have a PCB assembly plate extending outward from one side of the cavity cover, and a PCB circuit board mounted on the PCB assembly plate. This structure, through the arrangement of the PCB circuit board, inputs the excitation signal into the voice coils disposed around the primary and secondary magnets, thereby driving the vibration seat.

[0011] A further solution is to provide a cavity cover with a resilient bracket on one side of the PCB assembly board, with a recessed slot for the PCB. A boss is provided on the outer edge of the through-hole in the center of the cavity cover, and the outer wall of the boss mates with the inner wall of the voice coil. This structure, with the recessed slot at the bottom of the resilient bracket for the PCB, prevents the resilient bracket from colliding with the PCB during vertical vibration, potentially damaging it. Furthermore, the sidewalls of the boss on the cavity cover effectively support and secure the voice coil.

[0012] The vibration exciter with elastic bracket designed by the present invention inputs the excitation signal to the voice coil arranged around the main and auxiliary magnets through the PCB circuit board, thereby driving the movement of the vibration base, and finally driving the cavity cover to vibrate after transmitting the vibration to the elastic bracket through the support plate. The characteristic of this structure is that it abandons the method of using the elastic sheet connected to the vibration base as the main vibration transmission mechanism in the prior art, changes the material of the elastic sheet connected to the vibration base to a rubber material with stronger rigidity, and changes the rigid bracket in the prior art to an elastic bracket, thereby effectively reducing the lateral elastic load of the elastic bracket and enhancing the deformation of the elastic bracket, and finally effectively reducing the resonant frequency of the exciter and increasing the amplitude of the exciter. In addition, the connection between different structures is stable, which increases the service life of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is an axonometric view of the vibration exciter with elastic supports.

[0014] Figure 2 It is a cross-sectional view of a vibration exciter with an elastic support. DETAILED DESCRIPTION

[0015] In order to further illustrate the technical means and effects adopted by the present invention to achieve the predetermined purpose of the invention, the specific implementation methods, structures, features and effects of the present invention are described in detail below in conjunction with the accompanying drawings and preferred embodiments.

[0016] Example 1.

[0017] like Figure 1 and Figure 2 As shown, the vibration exciter with an elastic bracket described in this embodiment mainly includes a cavity cover 1 and a vibration seat 5. The outer edge of the cavity cover 1 is provided with a support seat 2 extending upward, and the support seat 2 is symmetrically arranged on both sides of the cavity cover 1. The inner side of the support seat 2 is semi-enclosed with an elastic bracket 3. The elastic bracket 3 is an integral injection-molded elastic material. The overall shape of the elastic bracket 3 is an hourglass shape, and the inner side is provided with an hourglass-shaped groove matching the shape, and a connecting groove is provided above the groove on the inner side of the elastic bracket 3, and a support plate 4 is fixed in the connecting groove; the cylindrical pin provided on the bottom surface of the vibration seat 5 is fixed with the through hole opened in the middle of the support plate 4, the vibration seat 5 is inverted on the top surface of the cavity cover 1, and the interior of the vibration seat 5 is cylindrical and hollow, and the interior of the vibration seat 5 is provided with a main and auxiliary magnets 6, and the periphery of the main and auxiliary magnets 6 is provided with a voice coil 7, and the bottom of the voice coil 7 is fixed with the through hole opened in the middle of the cavity cover 1.

[0018] like Figure 1 As shown, a PCB assembly board 8 is provided on one side of the cavity cover 1 extending outward, and a PCB circuit board is provided on the PCB assembly board 8 .

[0019] The bottom of the elastic bracket 3 on one side of the PCB assembly board 8 in the cavity cover 1 is provided with a recess 9 for avoiding the PCB circuit board.

[0020] Example 2.

[0021] like Figure 1 and Figure 2 As shown, the vibration exciter with elastic support described in this embodiment mainly includes a cavity cover 1 and a vibration seat 5. Support seats 2 are arranged on both sides of the cavity cover 1, and elastic supports 3 are arranged on the inner side of the support seat 2. The elastic support 3 is an integral injection-molded elastic material, and the elastic support 3 is glued and fixed to the top surface of the cavity cover 1. The inner side of the elastic support 3 is provided with an hourglass-shaped slot, and a support plate 4 is embedded in the connecting slot above the inner slot of the elastic support 3. At the same time, the elastic support 3 and the support plate 4 are further glued and fixed to the outer surface of the elastic support 3 through an adhesive; the vibration seat 5 is upside down on the top surface of the cavity cover 1, and the cylindrical pin arranged in the middle of the bottom surface of the vibration seat 5 is fixed with the through hole in the middle of the support plate 4, and the interior of the vibration seat 5 is cylindrical and hollow, and the main and auxiliary magnets 6 are arranged inside the vibration seat 5. The voice coil 7 is arranged on the periphery of the main and auxiliary magnets 6, and a boss 10 is provided on the outer edge of the through hole opened in the middle of the cavity cover 1, and the outer wall of the boss is fixed with the inner wall of the voice coil 7.

[0022] like Figure 1 As shown, a PCB assembly board 8 is provided on one side of the cavity cover 1 extending outward, and a PCB circuit board is provided on the PCB assembly board 8 .

[0023] The bottom of the elastic bracket 3 on one side of the PCB assembly board 8 in the cavity cover 1 is provided with a recess 9 for avoiding the PCB circuit board.

[0024] like Figure 2 As shown, the main and auxiliary magnets 6 are divided into a main magnet and an auxiliary magnet, and the main magnet and the auxiliary magnet are fixed by bonding with a clamping plate.

[0025] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as above in terms of a preferred embodiment, it is not intended to limit the present invention. Any person skilled in the art can, without departing from the scope of the technical solution of the present invention, make some changes or modifications to equivalent embodiments using the technical contents disclosed above. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A vibration exciter with an elastic support, mainly comprising a cavity cover (1) and a vibration seat (5), characterized in that The cavity cover (1) is symmetrically provided with support seats (2), an elastic bracket (3) is provided on the inner side of the support seat (2), and a support plate (4) is fixed between the elastic brackets (3); the vibration seat (5) is provided upside down on the cavity cover (1), the upper bottom surface of the vibration seat (5) is matched with the lower bottom surface of the support plate (4), the interior of the vibration seat (5) is hollow in a cylindrical shape, and the interior of the vibration seat (5) is provided with a main and auxiliary magnets (6), and a voice coil (7) is provided on the periphery of the main and auxiliary magnets (6), and the bottom of the voice coil (7) is matched with and fixed to the through hole opened in the middle of the cavity cover (1); The upper surface of the bottom of the vibration seat (5) is provided with a cylindrical pin, and the cylindrical pin is riveted to the through hole provided in the middle of the support plate (4); The upper inner portions of the two elastic brackets (3) are provided with connecting grooves for mating with the support plate (4), and the two ends of the support plate (4) are embedded and inserted between the two connecting grooves; the support plate (4) is made of an elastic material integrally injection-molded; The bottom of the elastic bracket (3) is glued and fixed to the cavity cover (1); and the overall shape of the elastic bracket (3) is an hourglass shape, and an hourglass-shaped slot matching the shape is provided on its inner side. The elastic bracket (3) is an integrally injection-molded elastic material.

2. The vibration exciter with elastic support according to claim 1, characterized in that The support seat (2) is semi-enclosed and arranged outside the elastic bracket (3), and a spacing position is provided in the middle of the outer wall of the support seat (2) located on the short side of the cavity cover (1) to facilitate the installation of the elastic bracket (3), and the outer wall of the support seat (2) located on the long side of the cavity cover (1) is extended toward the cavity cover (1) to fix the elastic bracket (3) extension; the bottom of the elastic bracket (3) is fixedly connected to the cavity cover (1).

3. The vibration exciter with elastic support according to claim 1, characterized in that The bottom of the elastic bracket (3) is glued and fixed to the cavity cover (1); and the overall shape of the elastic bracket (3) is an hourglass shape, and an hourglass-shaped slot matching the shape is provided on its inner side. The elastic bracket (3) is an integrally injection-molded elastic material.

4. The vibration exciter with elastic support according to claim 1, characterized in that A PCB assembly board (8) is provided on one side of the cavity cover (1) extending outward, and a PCB circuit board is provided on the PCB assembly board (8); an elastic bracket (3) on one side of the cavity cover (1) is provided with a recess (9) at the bottom thereof for avoiding the PCB circuit board, and a boss (10) is provided on the outer edge of a through hole provided in the middle of the cavity cover (1), and the outer wall of the boss is fixedly matched with the inner wall of the voice coil (7).

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