Vibrator

Abstract

The present invention provides a vibration exciter. [Solution] The vibrator includes a housing having an accommodation cavity, a stator assembly fixed to the housing, and a vibrator assembly housed in the accommodation cavity and driven by the stator assembly to vibrate, the stator assembly includes a magnetic pole core fixedly connected to the inside of the housing, and a magnet steel fixedly connected to one side of the magnetic pole core away from the housing 1, and the vibrator assembly includes a bobbin housed in the accommodation cavity, a coil mounted around the outside of the bobbin, a counterweight fixed to the bobbin, and a column assembly fixed to an end of the bobbin and elastically connected to the housing, the bobbin being a structure with a hollow interior. In the vibrator of the present invention, when the coil is wound, it is surrounded by the bobbin and the column assembly, making it less likely to deform and improving the consistency of the coil's outer shape.

Description

Technical Field

[0001] The present invention belongs to the technical field of vibrators, and particularly relates to a vibrator.

Background Art

[0002] As science and technology continue to advance, vibrators have gradually become an indispensable part of electronic devices. Current vibrators mainly include components such as a housing, a magnet, and a coil. In a vibrator, a coil is assembled in combination with a magnet. When the magnet cuts magnetic flux lines during vibration, an electromotive force is generated, causing the coil and a counterweight fixed thereto to reciprocate up and down to provide a vibration sensation.

[0003] In related technologies, the coil of a vibrator presents a hollow entanglement and is easily deformed during assembly, which affects the consistency of the outer shape of the coil. Therefore, it is necessary to provide a new vibrator to solve the above problems.

Summary of the Invention

Problems to be Solved by the Invention

[0004] An object of the present invention is to provide a vibrator in which when a coil is wound, it is surrounded by a bobbin and a column assembly, is not easily deformed, and improves the consistency of the outer shape of the coil.

Means for Solving the Problems

[0005] The technical solution of the present invention is as follows.

[0006] A vibrator including a housing having a receiving cavity, a stator assembly fixed to the housing, and a vibrator assembly received in the receiving cavity and driven by the stator assembly to vibrate. The stator assembly includes a magnetic pole core fixedly connected to the inside of the housing and a magnet steel fixedly connected to one side of the magnetic pole core away from the housing 1. The vibrator assembly includes a bobbin received in the receiving cavity, a coil provided around the outside of the bobbin, a counterweight fixed to the bobbin, and a column assembly fixed to the end of the bobbin and elastically connected to the housing. The bobbin has a structure with a core inside.

[0007] Furthermore, the bobbin includes a support portion at the center and two fixing portions respectively connected to both ends of the support portion. The fixing portions protrude from the outer surface of the support portion, forming a space between the two fixing portions. The coil is provided around the support portion and located within the space.

[0008] Furthermore, an assembled block protruding from the outside of one fixing portion is provided. The vibrator further includes a flexible circuit board with one end fixed to the assembled block and electrically connected to the coil, and the other end of the flexible circuit board is drawn out to the outside of the housing.

[0009] Furthermore, the column assembly includes a column fixedly connected to the fixing portion and elastically connected to the housing. A first positioning structure is provided at one end of the column, a second positioning structure is provided at the fixing portion, and the first positioning structure and the second positioning structure are fixedly connected.

[0010] Furthermore, the first positioning structure includes a rivet protrusion provided at one end of the column, the second positioning structure includes a rivet recess provided in the fixing portion, the rivet protrusion is riveted to the rivet recess, and / or the first positioning structure includes a rivet recess provided at one end of the column, the second positioning structure includes a rivet protrusion provided in the fixing portion, the rivet protrusion is riveted to the rivet recess, and / or the first positioning structure includes the end face of the column, the second positioning structure includes a leglet provided on one side of the fixing portion, the end face is in close contact with the bottom of the groove of the leglet, and is fixed by welding or adhesion.

[0011] Furthermore, the vibrator further includes a leaf spring fixed to one end of the column away from the fixing portion, and the edge of the leaf spring is fixed to the housing.

[0012] Furthermore, the leaf spring includes several positioning holes, several positioning protrusions are provided at one end of the column away from the fixing portion, the leaf spring and the column are clamped and connected by the positioning holes and the positioning protrusions, and / or the leaf spring includes fixing holes, fixing recesses are provided at one end of the column away from the fixing portion, the vibrator further includes bolts or rivets fixed and connected to the fixing recesses through the fixing holes, and / or the leaf spring and the column are fixed by welding or adhesion.

[0013] Furthermore, the vibrator is provided in the accommodation cavity and further includes a counterweight spaced from the case, through holes are opened in the counterweight, the column is engaged with the through holes and fixedly connected to the counterweight.

[0014] Furthermore, the housing includes a case, a first cover plate fastened and connected to one end of the case, and a second cover plate fastened to the other end of the case to jointly surround and form the accommodation cavity. The first cover plate includes positioning plugs formed by extending from its edge to the case, and positioning openings corresponding to the positioning plugs are opened in the case.

[0015] Furthermore, the inner side of the case protrudes toward the accommodation cavity to form a flange, and an assembly groove for assembling the magnetic pole core is provided on one side of the flange away from the case.

Advantages of the Invention

[0016] Compared with the prior art, the beneficial effects of the vibrator according to the present invention are as follows.

[0017] In the present invention, by providing the bobbin and column assembly, when the coil is wound, it surrounds and wraps around the bobbin and column assembly, making it difficult to deform, improving the consistency of the outer shape of the coil, and at the same time ensuring the stability of the overall structure of the vibrator. Meanwhile, it reduces the usage amount of metal materials such as magnet steel and coils, saves production costs, and makes the distribution of each component of the vibrator compact with the provided bobbin and column assembly, thereby increasing the space utilization rate.

Brief Description of the Drawings

[0018]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Modes for Carrying Out the Invention

[0019] Hereinafter, the present invention will be further described based on the drawings and examples.

[0020] Please refer to Figures 1 and 2. The present invention provides a vibration exciter including a housing 1 having an accommodation cavity 14, a stator assembly 3 fixed to the housing 1, and a vibrator assembly 2 accommodated in the accommodation cavity 14 and driven by the stator assembly 3 to vibrate, the stator assembly 3 includes a magnetic pole core 31 fixedly connected to the inside of the housing 1 and a magnet steel 32 fixedly connected to one side of the magnetic pole core 31 away from the housing 1, the vibrator assembly 2 includes a bobbin 21 accommodated in the accommodation cavity 14, a coil 22 circumferentially disposed on the outside of the bobbin 21, a counterweight 24 fixed to the bobbin 21, and a column assembly 23 fixed to an end of the bobbin 21 and elastically connected to the housing 1, the bobbin 21 being a structure with a hollow interior.

[0021] The vibration exciter provided by the present invention is generally widely used in electronic products such as smart phones and tablet computers. When an electronic product receives a message or a call, etc., it generates vibration when installed. A vibration exciter is installed in the electronic product to achieve the vibration effect. In the present invention, by providing a bobbin 21 and a column assembly, when the coil 22 is wound, it is surrounded by the bobbin 21 and the column assembly 23, making it less likely to deform, improving the consistency of the outer shape of the coil 22, and ensuring the stability of the entire structure of the vibration exciter. At the same time, the amount of metal materials used such as the magnetic steel 32 and the coil 22 is reduced, saving production costs. In addition, the provided bobbin 21 and column assembly 23 make the distribution of each component of the vibration exciter compact, and improve the space utilization rate.

[0022] The bobbin 21 includes a central support 211 and two fixed parts 212 respectively connected to both ends of the support 211, the fixed parts 212 protruding from the outer surface of the support 211 and forming a gap between the two fixed parts 212, and the coil 22 is mounted around the support 211 and located within the gap. In this embodiment, when the bobbin 21 and the column are connected by rivets or bolts 44, the cross section of the bobbin 21 is shaped like a letter "U", and the coil 22 cooperates with the stator assembly 3 in an energized state so that the bobbin 21 and the housing 1 vibrate together.

[0023] Outside a fixed part 212, a protruding assembly block 2121 is provided. The vibrator further includes a flexible circuit board 5 with one end fixed to the assembly block 2121 and electrically connected to the coil 22, and the other end of the flexible circuit board 5 is drawn out to the outside of the housing 1.

[0024] As shown in FIG. 3, the housing 1 includes a case 12, a first cover plate 11 fastened and connected to one end of the case 12, and a second cover plate 13 fastened to the other end of the case 12 to jointly surround and form an accommodation cavity 14. The first cover plate 11 includes a positioning plug 111 formed by extending from its edge to the case 12, and a positioning opening 121 corresponding to the positioning plug 111 is opened in the case 12. Specifically, the shape of the positioning plug 111 is the same as the shape of the positioning opening 121, and the positioning plug 111 is inserted and fixed into the positioning opening 121. However, during the assembly of the vibrator, the positioning plug 111 is not completely sealed and connected to the positioning opening 121, the length of the positioning plug 111 is shorter than the length of the positioning opening 121, and an assembly crack is reserved in the case 12 of the vibrator.

[0025] In this embodiment, in addition to the first cover plate 11, the second cover plate 13 and the case 12 being combined to form a cylindrical housing 1 structure, the housing 1 can be made of a metal material such as copper as the material of the housing 1, which can prevent magnetic leakage, prevent the outflow of magnetic field signals, and ensure the normal and effective operation of the vibrator.

[0026] The flexible circuit board 5 includes a first bending portion and a second bending portion. The first bending portion is fixedly adhered to the assembly block 2121, and the second bending portion is bent by the assembly crack formed in the case 12 and extends to the outside of the case 12. The bending angles formed by the first bending portion and the second bending portion are the same as the spatial angles between the assembly block 2121 and the housing 1. When the coil 22 is disposed around the bobbin 21, in addition to the coil 22 being electrically connected to the flexible circuit board 5, the vibrator is electrically connected to the outside through the flexible circuit board 5.

[0027] As shown in FIG. 1, in this embodiment, both the second cover plate 13 and the first cover plate 11 are coupled to the case 12 in a clamping connection manner to form the housing 1, which makes the installation process of the vibrator more convenient and at the same time easy to remove.

[0028] The column assembly 23 includes a column fixedly connected to the fixing portion 212 and elastically connected to the housing 1. A first positioning structure 233 is provided at one end of the column, and a second positioning structure 2122 is provided at the fixing portion 212. The first positioning structure 233 and the second positioning structure 2122 are fixedly connected.

[0029] Specifically, please refer to FIG. 5. The first positioning structure 233 includes a rivet protrusion provided at one end of the column, and the second positioning structure 2122 includes a rivet recess provided at the fixing portion 212. The rivet protrusion is riveted to the rivet recess, and / or the first positioning structure 233 includes a rivet recess provided at one end of the column, and the second positioning structure 2122 includes a rivet protrusion provided at the fixing portion 212. The rivet protrusion is riveted to the rivet recess, and / or the first positioning structure 233 includes the end face of the column, and the second positioning structure 2122 includes a leglet provided on one side of the fixing portion 212. The end face is in close contact with the bottom of the groove of the leglet and is fixed by welding or adhesion.

[0030] In this embodiment, the column is the first column 231 and the second Columnincluding 232, the first column 231 and the second Column 232 is fixedly connected to two fixing parts 212 of the bobbin 21 respectively, the first column 231 and the second Column 232 supports the winding of the coil 22 together with the bobbin 21, and at the same time makes the overall structure of the vibrator more stable. In some other embodiments, a set of columns or multiple columns may be used to work together with the bobbin 21. Here, without limitation, it is only necessary to stably support the coil 22 to ensure the normal operation of the vibrator. In addition, in other embodiments of the present application, a plurality of coils 22 may be provided, and accordingly, assemblies such as bobbins 21 and columns with corresponding quantities may be provided.

[0031] The vibrator further includes a leaf spring 4 fixedly connected to one end away from the fixing part 212 of the column, and the edge of the leaf spring 4 is fixedly connected to the housing 1.

[0032] Specifically, the leaf spring 4 includes several positioning holes, and several positioning protrusions are provided at one end away from the fixing part 212 of the column. The leaf spring 4 and the column are clamped and connected by the positioning holes and the positioning protrusions, and / or the leaf spring 4 includes fixing holes 43, and a fixing recess is provided at one end away from the fixing part 212 of the column. A bolt 44 or a rivet is engaged with the fixing recess through the fixing hole 43. The vibrator further includes a bolt 44 or a rivet fixedly connected to the fixing recess through the fixing hole 43, and / or the leaf spring 4 and the column are fixed by welding or adhesion. In this embodiment, when the leaf spring 4 and the column are connected by bolts 44 or rivets, a bolt gasket 441 for protecting the leaf spring 4 and the column structure and at the same time increasing the contact area between the leaf spring 4 and the column to improve the stability of the fixed connection is provided between the bolt and the column respectively. The bolt gasket 441 may be made of rubber or metal with the same material as the bolt 44 or the rivet.

[0033] In this embodiment, the leaf spring 4 includes a first leaf spring 41 and a second leaf spring 42, and one ends of them, which are away from the fixing parts 212 of the two columns respectively, are fixedly connected. The reason why the leaf spring 4 uses a free spiral slicer-like design is that when the leaf spring 4 and the column are fixedly connected by riveting or screwing, the rivet or bolt 44 may be connected to the column through the central free part of the leaf spring 4, which can simplify the production process without opening additional fixing holes 43, while reducing the weight of the vibrator and making the overall structure of the vibrator lighter. When the coil 22 is energized, the stator assembly 3 is pulled by the leaf spring 4 to vibrate synchronously along the axial direction of the housing 1. In other embodiments of the present application, other types of flexible assemblies may be used instead of the leaf spring 4.

[0034] The vibrator further includes a counterweight 24 provided in the accommodation cavity 14 and spaced from the case 12. The counterweight 24 is provided with a through hole 241 for passing through the column assembly 23. The column is engaged with the through hole 241 and fixedly connected to the counterweight 24. The counterweight 24 is provided in a cylindrical shape suitable for the case 12, and at the same time, the counterweight 24 is provided with a recess for easy assembly.

[0035] Specifically, according to different usage needs, in addition to controlling the vibration intensity by setting the weight of the counterweight 24, generally, the counterweight 24 is made of a metal material with a high density such as copper, tungsten or other alloys. After the coil 22 is energized, an alternating current is generated, which cuts the magnetic flux lines of the magnet steel 32 to generate an electromotive force, causing the coil 22, the bobbin 21, the column assembly 23, and the two counterweights 24 fixedly connected to the bobbin 21 and the column assembly 23 to reciprocate up and down, generating a vibration sensation.

[0036] Please refer to FIG. 4. The inner side of the case 12 protrudes toward the accommodation cavity 14 to form a flange 122, and an assembly groove 123 for assembling the magnetic pole core 31 is provided on one side of the flange 122 away from the case 12.

[0037] In this embodiment, two stator assemblies 3 are provided on opposite side walls in the accommodation cavity 14, resulting in a higher magnetic field density and higher vibration efficiency. In this embodiment, one surface of the magnetic pole core 31 is fixedly connected to the magnet steel 32 by adhesion or welding, and the other surface of the magnetic pole core 31 is adhesively or welded to the flange 122 for fixed connection. When fixing is performed by adhesion between the magnetic pole core 31 and the magnet steel 32, and between the magnetic pole core 31 and the flange 122, a magnetic adhesive can be used as an adhesion tool to reduce the consumption of the magnetic medium during the vibration process. The flange 122 also provides a certain buffer space for the counterweight 24 in the accommodation cavity 14 during vibration.

[0038] In this embodiment, the counterweight 24 provides an oscillation amount during the vibration process, and the housing 1 is for fixing the stator assembly 3, thus ensuring that the vibration system receives a reciprocating driving force in the vertical direction. Note that the vibrations caused by the two counterweights 24 have the same direction and frequency.

[0039] The above are only embodiments of the present invention. It should be pointed out here that those skilled in the art can also make improvements without departing from the creative idea of the present invention, and all these improvements are included in the protection scope of the present invention.

Claims

1. A vibrator including a housing having a receiving cavity, a stator assembly fixed to the housing, and a vibrator assembly received in the receiving cavity and driven by the stator assembly to vibrate, wherein the stator assembly includes a magnetic pole core fixedly connected to the inside of the housing and a magnet steel fixedly connected to the side of the magnetic pole core away from the housing, the vibrator assembly includes a bobbin received in the receiving cavity, a coil provided around the outside of the bobbin, a counterweight fixed to the bobbin, and a column assembly fixed to an end of the bobbin and elastically connected to the housing, and the bobbin has a structure with an interior, the bobbin includes a central support portion and two fixing portions respectively connected to both ends of the support portion, the fixing portions protrude from the outer surface of the support portion, a gap is formed between the two fixing portions, and the coil is provided around the support portion and located within the gap, the column assembly includes a column fixedly connected to the fixing portion and elastically connected to the housing, the column includes a first column and a second column, the first column and the second column are respectively fixedly connected to the two fixing portions of the bobbin, and the first column and the second column support the winding of the coil together with the bobbin, the housing includes a case, a first cover plate fastened and connected to one end of the case, and a second cover plate fastened to the other end of the case and jointly surrounding to form the receiving cavity, the vibrator further includes two counterweights provided in the receiving cavity and spaced from the case, through holes are formed in both of the two counterweights, and the first column and the second column are respectively engaged with the through holes and fixedly connected to the counterweights, characterized in that it is a vibrator.

2. An assembly block protruding from the outside of one of the fixing portions is provided, and the vibrator further includes a flexible circuit board having one end fixed to the assembly block and electrically connected to the coil, and the other end of the flexible circuit board is drawn out to the outside of the housing, characterized in that it is the vibrator according to Claim 1. Claim 3: A first positioning structure is provided at one end of the column, a second positioning structure is provided at the fixing part, and the first positioning structure and the second positioning structure are fixedly connected. The vibrator according to claim 1, characterized in that.

4. The first positioning structure includes a rivet protrusion provided at one end of the column, the second positioning structure includes a rivet recess provided at the fixing part, and the rivet protrusion is riveted to the rivet recess. And / or, the first positioning structure includes a rivet recess provided at one end of the column, the second positioning structure includes a rivet protrusion provided at the fixing part, and the rivet protrusion is riveted to the rivet recess. The vibrator according to claim 3, characterized in that.

5. The vibrator further includes a leaf spring fixed to one end of the column away from the fixing part, and an edge of the leaf spring is fixed to the housing. The vibrator according to claim 3, characterized in that.

6. The leaf spring includes a plurality of positioning holes, a plurality of positioning protrusions are provided at one end of the column away from the fixing part, and the leaf spring and the column are fastened and connected by the positioning holes and the positioning protrusions. And / or, the leaf spring includes a fixing hole, a fixing recess is provided at one end of the column away from the fixing part, and the vibrator further includes a bolt or a rivet fixedly connected to the fixing recess through the fixing hole. And / or, the leaf spring and the column are fixed by welding or adhesion. The vibrator according to claim 5, characterized in that. Claim 7: The first cover plate includes a positioning plug formed by extending from its edge into the case, and a positioning opening corresponding to the positioning plug is provided in the case. The vibrator according to claim 1, characterized in that.

8. Inside the case, a flange projects toward the accommodation cavity, and an assembly groove for assembling the magnetic pole core is provided on a side of the flange away from the case. The vibrator according to claim 7, characterized in that.

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