CN210350992U - Vibration motor - Google Patents

Abstract

The utility model provides a vibrating motor, including casing, oscillator, elastic support piece, stator and circuit board, the oscillator is including the magnet steel components who has at least one magnet steel, the stator include with magnet steel components just right coil, the circuit board is fixed the casing supports the coil, vibrating motor still locates including pasting the copper layer of circuit board, the coil is in orthographic projection on the copper layer is at least partly fallen into the copper layer, the circuit board include with the electricity connection pin that the coil electricity is connected, the copper layer is in the orthographic projection of circuit board completely with electricity connection pin mutually not overlapping. Compared with the prior art, the utility model provides a vibrating motor can the dissipation energy for vibration performance obtains accurate control, simultaneously can make full use of vibrating motor's inner space.

Description

Vibration motor

[ technical field ] A method for producing a semiconductor device

The utility model relates to a vibrating motor field especially relates to a vibrating motor.

[ background of the invention ]

A vibration motor is a component that converts electric energy into mechanical energy using a generation principle of electromagnetic force, and is generally installed in a portable mobile device to generate vibration feedback, such as vibration of a mobile phone or vibration feedback of a game machine.

In the related technology, a vibration motor comprises a shell, a vibrator and a stator, wherein the vibrator comprises a balancing weight and a magnetic steel component, the stator comprises a coil, the coil drives the magnetic steel component to vibrate, and when the vibrator vibrates, energy in the vibration motor is dissipated quickly, so that the performance of the vibration motor is difficult to control accurately; part vibrating motor is in set up damping piece between balancing weight and the casing, but this kind of mode of setting needs additionally to occupy vibrating motor's inner space, and space utilization is lower.

Therefore, it is necessary to provide a new vibration motor to solve the above problems.

[ Utility model ] content

An object of the utility model is to provide a can avoid the vibration motor in dissipation vibration motor energy make full use of space simultaneously.

The utility model provides a vibrating motor, including the casing that has accommodating space and accept in oscillator in the accommodating space, general oscillator suspension support in elastic support piece, drive in the accommodating space stator and the intercommunication of oscillator vibration the circuit board of stator and external power, the oscillator is including the magnet steel assembly who has at least one magnet steel, the stator include with magnet steel assembly is just right coil, the circuit board is fixed the casing supports the coil, vibrating motor still locates including pasting the copper layer of circuit board, the coil is in orthographic projection at least part on the copper layer falls into the copper layer, the circuit board include with the electricity that the coil electricity is connected connects the pin, the copper layer is in orthographic projection on the circuit board with electricity is connected the pin and is not overlapped each other.

Preferably, the circuit board includes the substrate layer, superpose locate the conducting layer of substrate layer and cover the insulating overburden on the conducting layer, the conducting layer forms connect the pin and with connect the conducting wire of pin intercommunication electrically, the overburden covers the conducting layer so that the conducting layer with the copper layer is insulating, the overburden corresponds dodges connect the pin so that connect the pin to expose, the copper layer respectively with the conducting wire and the coil is insulating each other.

Preferably, the conductive layer further forms an external connection portion extending to the outside of the housing and used for connecting an external power supply, the electrically connecting pin is conducted with the external connection portion through the conductive circuit, and the covering layer is free from the external connection portion.

Preferably, the vibrator comprises a balancing weight suspended in the accommodating space, a magnetic steel component assembled in the balancing weight and a pole core attached to the magnetic steel component, and the coil interacts with the magnetic steel component to drive the vibrator to vibrate.

Preferably, the housing includes a bottom wall for fixing the coil, a top wall opposite to the bottom wall, and a side wall extending from the edge of the bottom wall to the top wall in a bending manner, the top wall, the side wall, and the bottom wall enclose the accommodating space, and the circuit board is attached to and fixed to the bottom wall.

Preferably, the balancing weight is including being close to the upper surface of roof and with the lower surface that the upper surface set up relatively, the upper surface is close to the sunken accepting groove that is formed with of lower surface direction accepts the pole piece, the lower surface is to the sunken groove of dodging of upper surface direction the coil, the balancing weight runs through and has seted up the accepting hole, the relative both ends of accepting hole communicate respectively the accepting groove with dodge the groove, the accepting hole is along the perpendicular to the vibration direction straight line of oscillator extends, magnetic steel assembly accept in the accepting hole and be fixed in on the balancing weight.

Preferably, the pole core completely covers one side of the accommodating hole close to the upper surface.

Preferably, the accommodating holes correspond to the magnetic steels one to one.

Compared with the prior art, the utility model provides a vibrating motor includes casing, oscillator, stator, circuit board and copper layer, the circuit board is including the intercommunication the circuit region of stator and external power supply, vibrating motor still locates including pasting the copper layer of circuit board, the copper layer to the projection of circuit board is located completely outside the circuit region, during the oscillator vibration, the copper layer corresponds cutting magnetic induction line and produces the electromotive force, forms electromagnetic damping, can avoid energy rapid dissipation, provides the control precision of vibrating motor vibration performance to need not additionally to set up damping piece, material saving and make full use of vibrating motor's inner space.

[ description of the drawings ]

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without inventive efforts, wherein:

fig. 1 is a schematic perspective view of a vibration motor according to the present invention;

fig. 2 is an exploded view of the vibration motor shown in fig. 1;

fig. 3 is a sectional view of the vibration motor shown in fig. 1 taken along the line III-III;

FIG. 4 is an exploded view of the circuit board and the copper layer shown in FIG. 2;

fig. 5 is a schematic diagram of a layered structure of the circuit board shown in fig. 2.

[ detailed description ] embodiments

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1-5, the present invention provides a vibration motor 100, wherein the vibration motor 100 includes a housing 1, a stator 2, a vibrator 3, a circuit board 4, a copper layer 5, and an elastic member 6.

The shell 1 comprises a bottom wall 11, a top wall 13 opposite to the bottom wall 11 and a side wall 15 bent and extended from the edge of the bottom wall 11 towards the direction of the top wall 13, the side wall 15 and the bottom wall 11 enclose an accommodating space, and the vibrator 3, the stator 2, the circuit board 4, the copper layer 5 and the elastic piece 6 are accommodated in the accommodating space.

The stator 2 drives the vibrator 3 to vibrate, and specifically, the stator 2 includes a coil 21.

The vibrator 3 comprises a balancing weight 31, a magnetic steel component 33 matched and assembled with the balancing weight 31 and a pole core 35 attached to the magnetic steel component 33, the balancing weight 31 is suspended in the accommodating space, and the stator 2 drives the magnetic steel component 33 to vibrate. The magnetic steel component 33 is opposite to the coil 21, and the coil 21 interacts with the magnetic steel component 33 to drive the vibrator 3 to vibrate.

The weight member 31 includes an upper surface 311 close to the top wall 13 and a lower surface 312 opposite to the upper surface 311, the upper surface 311 is recessed toward the lower surface 312 to form an accommodating groove 313 for accommodating the pole piece 35, the lower surface 312 is recessed toward the upper surface 311 to form an avoiding groove 314 for avoiding the stator 2, the weight member 31 is penetrated by an accommodating hole 315, opposite ends of the accommodating hole 315 are respectively communicated with the accommodating groove 313 and the avoiding groove 314, and the accommodating hole 315 extends linearly along a vibration direction perpendicular to the vibrator 3.

The magnetic steel assembly 33 is accommodated in the accommodating hole 315 and fixed on the counterweight block 31, the magnetic steel assembly 33 is provided with at least one magnetic steel 331, and the accommodating holes 315 are in one-to-one correspondence with the magnetic steel 331. Specifically, in this embodiment, the number of the magnetic steels 331 is two, and correspondingly, the number of the receiving holes 315 is also two, one of the magnetic steels 331 is correspondingly disposed in one of the receiving holes 315, and the pole core 35 completely covers one side of the receiving hole 315 close to the upper surface 311. Preferably, the thickness of the pole piece 35 is smaller than the depth of the receiving groove 313, so that when the pole piece 35 is mounted in the receiving groove 313, the pole piece 35 does not exceed the upper surface 311, and the assembly of the top wall 13 is not affected.

The circuit board 4 is fixed to the housing 1 and supports the coil 21, and is used for communicating the stator 2 with an external power supply to achieve circuit conduction of the stator 2. Specifically, the circuit board 4 is attached to and fixed to the bottom wall 11.

The circuit board 4 includes a substrate layer 41, a conductive layer 43 stacked on the substrate layer 41, and an insulating cover layer 45 covering the conductive layer 43, wherein the conductive layer 43 forms an electrical connection pin 431 electrically connected to the coil 21 and a conductive trace 433 communicating with the electrical connection pin 431, the cover layer 45 covers the conductive layer 43 to insulate the conductive layer 43 from the copper layer 5, the cover layer 45 correspondingly avoids the electrical connection pin 431 to expose the electrical connection pin 431, and the copper layer 5 is insulated from the conductive trace and the coil 21.

Further, the conductive layer 43 further forms an external connection portion 435 extending to the outside of the housing 1 for connecting an external power source, the electrical connection pin 431 is electrically connected to the external connection portion 433 through the conductive trace 432, and the covering layer 45 is away from the external connection portion 435.

The copper layer 5 is attached to the circuit board 4, an orthographic projection of the coil 21 on the copper layer 5 at least partially falls into the copper layer 5, and the orthographic projection of the copper layer 5 on the circuit board 4 and the electrical connection pin 431 are not overlapped with each other.

A magnetic field is covered around the magnetic steel component 33, the strength of the magnetic field is related to the distance from the magnetic steel component 33, and the closer the distance from the magnetic steel component 33 is, the stronger the magnetic field strength is; the further away from the magnetic steel assembly 33, the weaker the magnetic field strength. When the vibrator 3 vibrates in a reciprocating manner, the stator 2 is relatively static, so that the magnetic field intensity around the stator 2 also changes in a reciprocating manner, the stator 2 generates driving force corresponding to the cutting magnetic induction line, and meanwhile, reverse electromotive force is generated to generate first electromagnetic damping.

Similarly, when the vibrator 3 vibrates reciprocally, the copper layer 5 is relatively static, so that the magnetic field intensity around the copper layer 5 also changes reciprocally, and the copper layer 5 generates local eddy currents corresponding to the cutting magnetic induction lines, so as to generate reverse electromotive force and generate second electromagnetic damping.

The first electromagnetic damping and the second electromagnetic damping are mutually superposed to form electromagnetic damping, so that the response time of the vibrating motor 100 can be improved, the vibrator 3 can be hindered from vibrating, the too fast dissipation of the vibration energy of the vibrator 3 is avoided, and the control accuracy of the performance of the vibrating motor 100 is improved.

Further, under the same condition of stator 2 and 5 volumes in copper layer, the second electromagnetic damping that copper layer 5 produced is greater than first electromagnetic damping, can effectively increase magnet steel assembly 33's whole electromagnetic damping need not additionally increase damping structure, practices thrift the cost, can practice thrift simultaneously vibrating motor 100's inner space.

One end of the elastic element 6 is fixed to the counterweight 31, and the other end of the elastic element is fixed to the housing 1 and is used for suspending the vibrator 3 in the accommodating space. The joint of the elastic element 6 and the balancing weight 31 and/or the shell 1 is preferably provided with a reinforcing welding piece, which not only can enhance the binding force of the elastic element 6, but also can prevent the elastic element 6 from being excessively bent and broken.

Compared with the prior art, the utility model provides a vibrating motor includes casing, oscillator, stator, circuit board and copper layer, the circuit board is including the intercommunication the circuit region of stator and external power supply, vibrating motor still locates including pasting the copper layer of circuit board, the copper layer to the projection of circuit board is located completely outside the circuit region, during the oscillator vibration, the copper layer corresponds cutting magnetic induction line and produces the electromotive force, forms electromagnetic damping, can avoid energy rapid dissipation, provides the control precision of vibrating motor vibration performance to need not additionally to set up damping piece, material saving and make full use of vibrating motor's inner space.

The above only is the embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structures or equivalent processes of the present invention are used in the specification and the attached drawings, or directly or indirectly applied to other related technical fields, and the same principle is included in the protection scope of the present invention.

Claims (8)

1. The utility model provides a vibrating motor, including the casing that has accommodating space and accept in oscillator in the accommodating space, general oscillator suspension support in elastic support piece, drive in the accommodating space stator and the intercommunication of oscillator vibration the stator and the circuit board of external power supply, a serial communication port, the oscillator is including the magnet steel assembly who has at least one magnet steel, the stator include with magnet steel assembly is just right coil, the circuit board is fixed the casing supports the coil, vibrating motor still locates including pasting the copper layer of circuit board, the coil is in orthographic projection at least part on the copper layer falls into the copper layer, the circuit board include with the electricity that the coil electricity is connected connects the pin, the copper layer is in orthographic projection on the circuit board with electricity connect the pin mutually not overlapping.

2. The vibration motor according to claim 1, wherein the circuit board includes a substrate layer, a conductive layer stacked on the substrate layer, and an insulating cover layer covering the conductive layer, the conductive layer forming the electrical connection pins and conductive traces communicating with the electrical connection pins, the cover layer covering the conductive layer to insulate the conductive layer from the copper layer, the cover layer correspondingly avoiding the electrical connection pins to expose the electrical connection pins, and the copper layer being insulated from the conductive traces and the coil, respectively.

3. The vibration motor according to claim 2, wherein the conductive layer further forms an external connection portion extending to the outside of the housing for connecting an external power supply, the electrical connection pin is electrically connected to the external connection portion through the conductive trace, and the cover layer is kept away from the external connection portion.

4. The vibration motor of claim 1, wherein the vibrator comprises a weight block suspended in the accommodating space, the magnetic steel component assembled in the weight block, and a pole core attached to the magnetic steel component, and the coil interacts with the magnetic steel component to drive the vibrator to vibrate.

5. The vibration motor according to claim 4, wherein the housing includes a bottom wall for fixing the coil, a top wall opposite to the bottom wall, and a side wall extending from an edge of the bottom wall to the top wall, the side wall, and the bottom wall enclose the receiving space, and the circuit board is attached and fixed to the bottom wall.

6. The vibration motor of claim 5, wherein the weight member includes an upper surface close to the top wall and a lower surface opposite to the upper surface, the upper surface is recessed toward the lower surface to form a receiving groove for receiving the pole core, the lower surface is recessed toward the upper surface to form an avoiding groove for avoiding the coil, the weight member has a receiving hole formed therethrough, opposite ends of the receiving hole are respectively communicated with the receiving groove and the avoiding groove, the receiving hole extends along a straight line perpendicular to a vibration direction of the vibrator, and the magnetic steel assembly is received in the receiving hole and fixed on the weight member.

7. The vibration motor according to claim 6, wherein the pole core completely covers a side of the housing hole near the upper surface.

8. The vibration motor of claim 6, wherein the receiving holes correspond to the magnetic steels one to one.

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