Counterweight type vibration device

Abstract

The application discloses a counterweight type vibration device, which comprises a shell and a vibration assembly. The shell is provided with two elastic support structures at two ends of the vibration assembly. The shell is also provided with a through slot for passing through the two ends of the vibration assembly and communicating with the hollow cavity. The vibration assembly comprises two counterweight blocks at the ends, short strong magnetic strips adjacent to the counterweight blocks, a long strong magnetic strip between the two short strong magnetic strips, and two fixing screws on both sides for coupling the counterweight blocks, the short strong magnetic strips and the long strong magnetic strip together. The vibration device also comprises two coils. The current change of the two coils leads to the change of the magnetic field force, so as to form the vibration of the vibration assembly in the same proportion with the current change. The counterweight blocks are made of non-magnetic conductive material. The short strong magnetic strips and the long strong magnetic strips generate the magnetic field in a smaller range, so that the range of the magnetic field movement of the vibration assembly is reduced during the vibration process, and the influence on the coils is reduced, thereby achieving better vibration effect.

Description

Technical Field

[0001] This utility model relates to a vibration device, specifically a counterweight vibration device. Background Technology

[0002] Vibration devices on the market are divided into three categories. One type uses a motor to drive a pendulum to rotate. The vibration frequency is directly related to the motor speed, making it difficult to control and achieve a precise vibration effect. Moreover, it produces mechanical vibration noise and cannot be synchronized with audio. Another type uses a moving coil to drive a vibrating plate to achieve the vibration effect, but the vibration is too weak and the power cannot meet product requirements, making it unable to drive heavy products. The third type uses electromagnetic drive to achieve the vibration effect through spring suppression, but it still cannot reduce mechanical noise.

[0003] Therefore, it is necessary to develop a vibration device that can be synchronized with audio and has low mechanical noise.

[0004] Furthermore, during the process of driving a vibration component via a coil, the magnetic field force position of the vibration component reciprocates with the component. When it reaches its end limit position and switches, it exerts a suppressive effect on the coil. Therefore, it is necessary to develop a vibration device and its manufacturing method that can reduce the impact on the coil. Summary of the Invention

[0005] The purpose of this invention is to address the aforementioned problems in the existing technology by providing a counterweight vibration device.

[0006] The objective of this utility model is achieved through the following technical solution: This utility model provides a counterweight vibration device, comprising a shell with a hollow cavity, and a vibration component disposed within the hollow cavity; the shell has two elastic support structures located at both ends of the vibration component; the shell also has through slots for passing through both ends of the vibration component and communicating with the hollow cavity; the vibration component includes two counterweights located at the ends, short strong magnetic strips adjacent to the counterweights, a long strong magnetic strip located between the two short strong magnetic strips, and two fixing screws connecting the counterweights, the short strong magnetic strips, and the long strong magnetic strips together and located on both sides; it also includes two coils fixed to the inner wall of the hollow cavity and located on the outer periphery of the short strong magnetic strips and the long strong magnetic strips, wherein changes in the current conducted by the two coils cause changes in the magnetic field force, thereby forming a vibration of the vibration component proportional to the change in current; the counterweights are made of non-magnetic material.

[0007] Preferably, one side of the outer end of one of the counterweights is an outer connecting side, extending to the outside of the through groove and fixedly connected to the elastic support structure, and the other side is an inner connecting side, with a screw hole for the fixing screw to pass through; one side of the outer end of the other counterweight is an inner connecting side, with a screw hole for the fixing screw to pass through, and the other side is an outer connecting side, extending to the outside of the through groove and fixedly connected to the elastic support structure.

[0008] Preferably, the elastic support structure is a spring sheet, one end of which is fixedly connected to the housing and the other end is fixedly connected to the outer connecting side of the counterweight; the outer side of the through groove is provided with an clearance groove for avoiding the spring sheet.

[0009] Preferably, the thickness of the outer connecting side is more than twice the thickness of the inner connecting side.

[0010] Preferably, the counterweight has a hollow groove in the middle, and the size of the hollow groove is set according to the counterweight parameters.

[0011] Preferably, the center of the spring sheet is provided with an elliptical through groove; the end of the spring sheet that is fixedly connected to the housing is provided with two screw holes.

[0012] Preferably, the short and long strong magnetic strips have openings on their sides for the fixing screws to pass through; the counterweight has a protrusion that mates with the elliptical through slot for positioning during connection.

[0013] Preferably, the housing has a block-shaped structure; the hollow cavity has an upper opening for the coil to be installed inside the hollow cavity; the side of the upper opening has a slot for the wire of the coil to pass through; the outer side of the slot has a mounting groove for embedding a PCB board; the outer side of the PCB board has an electrical contact for connecting wires.

[0014] The manufacturing method of this utility model of counterweight vibration device includes the following assembly steps: First, the counterweight block, the short strong magnetic strip, the long strong magnetic strip, the short strong magnetic strip, and the counterweight block are fixedly connected together from both sides in sequence using two fixing screws to form the vibration assembly; the coil is embedded into the hollow cavity from the upper opening of the housing; then the vibration assembly is inserted into the coil from the outside of a through slot; then the spring piece is fixedly connected to the housing with two fixing screws by positioning the protrusion, and fixedly connected to the outer connecting side of the counterweight block with one screw.

[0015] More specifically, each step employs an automated installation method with an automatic conveyor rail. Starting from the loading station, with the top opening of the housing facing upwards: the first station is the loading station, where the housing is placed in the provided fixture; the second station is where the coil is inserted into the hollow cavity through the top opening; the third station is where the vibration component is pushed through the outer side of the through slot into the coil within the hollow cavity using a pushing mechanism; the fourth station is where two spring clips are fixedly connected to the housing and the outer connecting side of the counterweight using screw mechanisms; the fifth station is for applying the facing paper and the PCB board; the sixth station is the unloading station, where the product is removed from the fixture. The fixture is installed within a reciprocating slide rail, and the movement from the loading station to the unloading station uses either a vertical rotary conveyor rail or a planar rotary conveyor rail.

[0016] Overall, compared with the prior art, the beneficial effects of this utility model are as follows: The vibration component of this utility model uses non-magnetic counterweights at both ends, thereby confining the magnetic field generated by the short and long strong magnetic strips to a smaller range. This reduces the range of magnetic field movement during vibration, thus reducing the impact on the coil and resulting in better vibration performance. Furthermore, the counterweights have a structure where the outer connecting side is thicker than the inner connecting side, forming a beveled structure to prevent the inner connecting side from colliding with the spring. A hollow groove is further used to adjust the mass of the counterweight by changing its size, achieving different counterweight effects. An inward-facing clearance groove maintains a complete square structure, resulting in a small overall space, aesthetic appeal, and high structural strength. The top opening facilitates coil installation, and the mounting side grooves allow for easy embedding of the PCB board into the square structure, maintaining the square shape, aesthetic appeal, and facilitating automated assembly. The assembly method of this utility model's vibration device is suitable for automated equipment, enabling automated assembly. This novel vibration device can be widely used in products such as small Bluetooth speakers, gaming controllers, gaming headsets, massagers, and electric toys. Attached Figure Description

[0017] Figure 1 This is a cross-sectional view of a specific embodiment of the vibration device of this utility model; Figure 2 for Figure 1 Exploded perspective view of the embodiment; Figure 3 for Figure 1 A perspective view of the vibration component portion of the embodiment; Figure 4 for Figure 3 Exploded view; Figure 5 for Figure 1 Perspective view of the housing in the embodiment; Figure 6 for Figure 5 The exploded diagram.

[0018] Figure label: 10. Shell 100. Hollow cavity 101 Through slot 102 Clearance slot 107 Installation side groove 108 Groove 109 Top opening 20 Vibration assembly 21 Counterweight 21A Counterweight 210 Hollow groove 211 External connecting side 212 Inner connecting side 213 Screw hole 217 Protrusion 22 Short strong magnetic strip 221 Open slot 23 Long strong magnetic strip 231 Opening slot 24 Fixing screw 30 shrapnel 301 elliptical through groove 302 screw hole 40 coil 50 PCB boards. Detailed Implementation

[0019] To better understand the technical content of this utility model, the technical solution of this utility model will be further introduced and explained below with reference to specific embodiments, but it is not limited thereto.

[0020] like Figures 1 to 6 The embodiment shown in this utility model discloses a counterweight vibration device, comprising a housing 10 with a hollow cavity 100, and a vibration component 20 disposed within the hollow cavity 100; the housing 10 has two elastic support structures located at both ends of the vibration component 20; the housing 10 also has through slots 101 for passing through both ends of the vibration component 20 and communicating with the hollow cavity 100; the vibration component 20 includes two counterweights 21 located at the ends, short strong magnetic strips 22 adjacent to the counterweights 21, a long strong magnetic strip 23 located between the two short strong magnetic strips 22, and a mechanism for connecting the counterweights 21 and the short strong magnetic strips 22. The short magnetic strip 22 and the long strong magnetic strip 23 are connected together and located on both sides by two fixing screws 24; it also includes two coils 40 fixed to the inner wall of the hollow cavity 100 and located on the outer periphery of the short strong magnetic strip 22 and the long strong magnetic strip 23. The change of current conducted by the two coils 40 causes the change of magnetic field force to form the vibration component 20 vibrating in proportion to the change of current; the counterweight 21 is made of non-magnetic material and is used to isolate the edge magnetic poles of the short strong magnetic strip. When the vibration component works to the maximum amplitude, there will be no reverse action force between it and the coil to cancel the positive action force, which can improve the working efficiency.

[0021] More specifically, one side of the outer end of one counterweight 21 is an outer connecting side 211, with a screw hole 219 at its outer end, extending to the outside of the through groove 101 and fixedly connected to the elastic support structure (i.e., spring piece 30) by a screw 39; the other side is an inner connecting side 212, with a screw hole 213 for passing through the fixing screw 24. The other counterweight 21A has an inner connecting side 212 on one side of its outer end, with a screw hole 213 for passing through the fixing screw 24; the other side is an outer connecting side 211, extending to the outside of the through groove 101 and fixedly connected to the elastic support structure. The inner ends of the outer connecting sides of both counterweights also have threaded holes 218 for connecting with the fixing screw 24. The threaded holes 218 and screw holes 219 can be screw holes on the same axis (using the same thread) or threaded holes on different axes.

[0022] More specifically, the elastic support structure is a spring piece 30. One end of the spring piece 30 is fixedly connected to the housing 10 by a screw 38, and the other end is fixedly connected to the outer connection side 211 of the counterweights 21 and 21A. The outer side of the through groove 101 is provided with a clearance groove 102 for avoiding the spring piece 30.

[0023] More specifically, the thickness of the outer connecting side 211 is more than twice the thickness of the inner connecting side 212. This creates an outer bevel to prevent the inner connecting side from colliding with the spring sheet during vibration.

[0024] More specifically, the counterweight 21 has a hollow groove 210 in the middle, and the size of the hollow groove 210 is set according to the counterweight parameters.

[0025] More specifically, the spring 30 has an elliptical through groove 301 at its center; and the end of the spring 30 that is fixedly connected to the housing 10 has two screw holes 302.

[0026] More specifically, the short strong magnetic strip 22 and the long strong magnetic strip 23 have opening slots 221 and 231 on their sides for passing through the fixing screw 24; the counterweight block 21 has a protrusion 217 that cooperates with the elliptical through slot 301 for positioning during connection.

[0027] More specifically, the housing has a block-shaped structure; the hollow cavity 100 has an upper opening 109 for the coil 40 to be installed inside the hollow cavity 100; the side of the upper opening 109 has a slot 108 for the wires of the coil 40 to pass through; the outer side of the slot 108 has a mounting side groove 107 for embedded mounting of the PCB board 50; the outer side of the PCB board 50 has electrical contacts for connecting wires.

[0028] More specifically, a face sticker 104 is provided above the upper opening 109, and a bottom sticker 105 is provided below the housing 10.

[0029] More specifically, the elliptical through groove 301 inside the spring is provided with two symmetrical circular arc cuts, and the outer edge of the spring is a straight line, which makes it convenient to adjust the deformation degree of the spring and thus control the deformation curvature of the spring to achieve the best elastic effect.

[0030] During installation of the vibration assembly, the counterweight 21, short strong magnetic strip 22, and long strong magnetic strip 23 are tightly connected together by fixing screws. The adjacent surfaces of the short strong magnetic strip 22 and the long strong magnetic strip 23 have the same magnetic pole. After the fixing screws are tightened, the two short strong magnetic strips can extend the magnetic field of the middle long strong magnetic strip 23 in the radial direction, thereby interacting with the magnetic field of the coil, reducing the leakage of the magnetic field, and thus forming a better vibration effect.

[0031] The shell primarily adopts a flat shape, meaning its height is relatively small, much smaller than its length and width. Furthermore, both the short and long strong magnetic strips also employ a flat, strip-like structure.

[0032] In other embodiments, the elastic support structure may further include a reinforcing plate connected to the fixed end of the spring and the housing to improve the support strength.

[0033] In other embodiments, the sides of the short strong magnetic strip 22 and the long strong magnetic strip 23 may also be provided with through holes for passing through fixing screws to make a fixed connection.

[0034] The manufacturing method of this utility model of counterweight vibration device includes the following assembly steps: First, two fixing screws are used to fix and connect the counterweight block, short strong magnetic strip, long strong magnetic strip, short strong magnetic strip and counterweight block together from both sides to form a vibration assembly; the coil is embedded into the hollow cavity from the upper opening of the shell; then the vibration assembly is inserted into the coil from the outside of a through slot; then the spring is fixedly connected to the shell with two fixing screws by positioning the protrusion, and fixedly connected to the outer connecting side of the counterweight block with one screw.

[0035] More specifically, each step employs an automated installation method with an automatic conveyor rail. Starting from the loading station, with the top opening of the housing facing upwards: the first station is the loading station, where the housing is placed into the provided fixture; the second station is where the coil is inserted into the hollow cavity through the top opening; the third station is where the vibration component is pushed through the outer side of the through slot into the coil within the hollow cavity using a pushing mechanism; the fourth station is where two spring clips are fixedly connected to the housing and the outer connecting side of the counterweight using screw mechanisms; the fifth station is for applying the facing paper and the PCB board; and the sixth station is the unloading station, where the product is removed from the fixture. The fixture is installed within a reciprocating slide rail, and the movement from the loading station to the unloading station uses either a vertical rotary conveyor rail or a planar rotary conveyor rail.

[0036] In summary, compared with the prior art, the beneficial effects of this utility model are as follows: The vibration component of this utility model uses non-magnetic counterweights at both ends, thereby confining the magnetic field generated by the short and long strong magnetic strips to a smaller range. This reduces the range of magnetic field movement during vibration, thus reducing the impact on the coil and resulting in better vibration performance. Furthermore, the counterweights have a structure where the outer connecting side is thicker than the inner connecting side, forming a beveled structure that prevents the inner connecting side from colliding with the spring. A hollow groove is further used to adjust the mass of the counterweight by changing its size, achieving different counterweight effects. An inward-facing clearance groove maintains a complete square structure, resulting in a small overall space, aesthetic appeal, and high structural strength. The top opening facilitates coil installation, and the mounting side grooves allow for easy embedding of the PCB board into the square structure, maintaining its square shape, aesthetic appeal, and facilitating automated assembly. The assembly method of this utility model's vibration device is suitable for automated equipment, enabling automated assembly. This novel vibration device can be widely used in products such as small Bluetooth speakers, gaming controllers, gaming headsets, massagers, and electric toys.

[0037] The above examples are merely illustrative of the technical content of this utility model to facilitate reader understanding, but do not imply that the implementation of this utility model is limited to these embodiments. Any technical extensions or re-creations made based on this utility model are protected by this utility model. The scope of protection of this utility model is defined by the claims.

Claims

1. A counterweight vibration device, comprising a shell with a hollow cavity, and a vibration assembly disposed within the hollow cavity; characterized in that... The housing has two elastic support structures located at both ends of the vibration component; the housing also has through slots for passing through both ends of the vibration component and communicating with the hollow cavity; the vibration component includes two counterweights located at the ends, short strong magnetic strips adjacent to the counterweights, a long strong magnetic strip located between the two short strong magnetic strips, and two fixing screws on both sides connecting the counterweights, the short strong magnetic strips and the long strong magnetic strip; it also includes two coils fixed to the inner wall of the hollow cavity and located on the outer periphery of the short strong magnetic strips and the long strong magnetic strips, the change of current conducted by the two coils causes a change in magnetic field force, so as to form the vibration of the vibration component in proportion to the change of current; the counterweights are made of non-magnetic material.

2. The counterweight vibration device according to claim 1, characterized in that... One of the outer ends of one of the counterweights is an outer connecting side, extending to the outside of the through groove and fixedly connected to the elastic support structure, and the other side is an inner connecting side, with a screw hole for the fixing screw to pass through; the other outer end of the counterweight is an inner connecting side, with a screw hole for the fixing screw to pass through, and the other side is an outer connecting side, extending to the outside of the through groove and fixedly connected to the elastic support structure.

3. The counterweight vibration device according to claim 2, characterized in that... The elastic support structure is a spring sheet, one end of which is fixedly connected to the housing and the other end is fixedly connected to the outer connecting side of the counterweight block; the outer side of the through groove is provided with an clearance groove for avoiding the spring sheet.

4. The counterweight vibration device according to claim 2, characterized in that... The thickness of the outer connecting side of the counterweight is more than twice the thickness of the inner connecting side.

5. The counterweight vibration device according to claim 4, characterized in that... The counterweight has a hollow groove in the middle, and the size of the hollow groove is set according to the counterweight parameters.

6. The counterweight vibration device according to claim 3, characterized in that... The center of the spring sheet is provided with an elliptical through groove; the end of the spring sheet that is fixedly connected to the housing is provided with two screw holes.

7. The counterweight vibration device according to claim 6, characterized in that... The short and long strong magnetic strips have openings on their sides for the fixing screws to pass through; the counterweight has a protrusion that matches the elliptical through slot for positioning during connection.

8. The counterweight vibration device according to claim 7, characterized in that... The housing has a block-shaped structure; the hollow cavity has an upper opening for the coil to be installed inside the hollow cavity; the side of the upper opening has a slot for the wires of the coil to pass through; the outer side of the slot has a mounting groove for embedding a PCB board; the outer side of the PCB board has electrical contacts for connecting wires.

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