CN211530974U

CN211530974U - Vibration motor

Info

Publication number: CN211530974U
Application number: CN201922492692.7U
Authority: CN
Inventors: 马杰
Original assignee: AAC Technologies Pte Ltd
Current assignee: AAC Technologies Pte Ltd
Priority date: 2019-12-30
Filing date: 2019-12-30
Publication date: 2020-09-18
Anticipated expiration: 2029-12-30

Abstract

The utility model provides a vibrating motor, including the casing that has accommodating space, set up in accommodating space and the shell fragment that links to each other with the casing, support through the shell fragment and suspend the oscillator in accommodating space, accept in accommodating space and relative with the oscillator stator, and press from both sides the damping piece of locating between shell fragment and oscillator, shell fragment and oscillator are equal centre gripping damping piece on first direction and second direction, and first direction is perpendicular with the second direction. The utility model discloses damping piece presss from both sides in first direction and second direction and locates between shell fragment and the oscillator, for the oscillator provides the damping in a plurality of directions, need not realize multi-direction damping effect through a plurality of dampings, and then can effectually simplify this vibrating motor's inner structure, reduces the shared space of damping piece, reduces the volume, and can effectively guarantee the vibration range of oscillator, effective noise elimination.

Description

Vibration motor

[ technical field ] A method for producing a semiconductor device

The utility model relates to a consumer electronics technical field, it is specific, involve a vibrating motor.

[ background of the invention ]

With the development of electronic technology, portable consumer electronic products are more and more sought by people, and with the pursuit of people for use experience, electronic products such as mobile phones, handheld game machines, car navigation or handheld multimedia entertainment devices and the like generally adopt vibrating motors to perform system feedback, such as incoming call prompt, information prompt, navigation prompt, vibration feedback of game machines and the like.

At present, the vibration motor adopts a damping piece to limit the vibration amplitude of a vibrator, so that the effect of eliminating noise in the working process of the vibration motor is achieved. However, the existing damping arrangement of the vibration motor usually provides a certain direction of damping for a single damping element or a plurality of damping elements are combined to provide multi-direction damping, the damping distribution causes the structure of the motor to be complicated, and the damping occupies a large space, thereby affecting the volume of the motor.

Therefore, there is a need for a vibration motor that has a simple structure, occupies a small space, uses a small number of damping members, and is easy to assemble.

[ summary of the invention ]

An object of the utility model is to provide a vibrating motor that simple structure, convenient assembling, space are little.

The technical scheme of the utility model as follows: a vibration motor comprises a shell with an accommodating space, an elastic sheet arranged in the accommodating space and connected with the shell, a vibrator suspended in the accommodating space through the support of the elastic sheet, a stator accommodated in the accommodating space and opposite to the vibrator, and a damping piece clamped between the elastic sheet and the vibrator, wherein the elastic sheet and the vibrator are clamped on the damping piece in a first direction and a second direction, and the first direction is perpendicular to the second direction.

Preferably, the vibrator comprises a mass block and magnetic steel fixedly connected with the mass block, and the damping piece is clamped between the elastic piece and the mass block in the first direction and the second direction.

Preferably, the mass block is square and comprises a first side parallel to the first direction and a second side parallel to the second direction; the damping piece is positioned at a corner of the mass block and comprises a first connecting section arranged on a first side edge and a second connecting section arranged on a second side edge and connected with the first connecting section; the shell fragment includes the intermediate junction section that links to each other with the casing, and respectively with first linking arm and the second linking arm that intermediate junction section both ends link to each other, first linking arm and second linking arm all include the centre gripping first section, the centre gripping of the first linking section of damping piece second linking section and with the first second section that links to each other to and link to each other with the second section link to each other with the quality piece is fixed the link in order to support the quality piece.

Preferably, the mass block comprises a mounting hole which is located at the center and used for being embedded into the magnetic steel, and an avoidance cavity which provides an avoidance space for the stator and is located in the stator.

Preferably, the damping piece is foam or silica gel.

Preferably, the housing includes a bottom wall and a top wall that are disposed at an interval, and a side wall that connects the bottom wall and the top wall, the bottom wall, the top wall, and the side wall enclose the accommodation space, the stator includes a coil assembly that is disposed away from the vibrator, and the coil assembly includes a coil and a pole core that is embedded in the middle of the coil.

Preferably, the stator further comprises a magnetic conductive sheet arranged on one side of the coil assembly, which is far away from the vibrator.

Preferably, a side surface of the mass facing the top wall or the bottom wall is provided with a limiting groove, and a side surface of the top wall or the bottom wall facing the mass is provided with a limiting block located in the limiting groove for limiting movement displacement of the mass.

Preferably, the magnetic conductive sheet is provided with a notch for welding and routing the coil.

Preferably, the magnetic steel includes at least two regions with opposite magnetic pole directions, an included angle between a boundary line between the regions with opposite magnetic poles adjacent to each other and the first direction and the second direction is not 90 degrees, and a central line in the long axis direction of the coil coincides with a projection of the boundary line toward the top wall.

Preferably, the magnetic pole direction is perpendicular to a plane formed by the first direction and the second direction.

Compared with the prior art, the beneficial effects of the utility model reside in that: the utility model discloses damping piece presss from both sides in first direction and second direction and locates between shell fragment and the oscillator, for the oscillator provides the damping in a plurality of directions, need not realize multi-direction damping effect through a plurality of dampings, and then can effectually simplify this vibrating motor's inner structure, reduces the shared space of damping piece, reduces the volume, and can effectively guarantee the vibration range of oscillator, effective noise elimination.

[ description of the drawings ]

Fig. 1 is a perspective view of a vibration motor according to an embodiment of the present invention;

fig. 2 is a cross-sectional view in the direction a-a of fig. 1.

Fig. 3 is an exploded view of a vibration motor according to an embodiment of the present invention.

Fig. 4 is an internal schematic view of a vibration motor according to an embodiment of the present invention.

Fig. 5 is the schematic diagram of the region with opposite magnetic pole directions of the magnetic steel of the vibration motor of the present invention.

Fig. 6 is a schematic view of a long axis of a coil of a vibration motor according to an embodiment of the present invention.

[ detailed description ] embodiments

The present invention will be further described with reference to the accompanying drawings and embodiments.

Referring to fig. 1-6, a vibration motor according to an embodiment of the present invention includes a housing 10 having an accommodating space 15, a spring plate 20 disposed in the accommodating space 15 and connected to the housing 10, a vibrator 40 suspended in the accommodating space 15 by being supported by the spring plate 20, a stator 30 accommodated in the accommodating space 15 and facing the vibrator 40, and a damping member 43 interposed between the spring plate 20 and the vibrator 40. The elastic sheet 20 and the vibrator 40 clamp the damping member 43 in both the first direction 1 and the second direction 2, and the first direction 1 is perpendicular to the second direction 2.

Specifically, referring to fig. 4, the vibrator 40 includes a mass block 41 and a magnetic steel 42 fixedly connected to the mass block 41, and the damping member 43 is clamped between the elastic sheet and the mass block in both the first direction and the second direction. The mass block 41 is square, the damping member 43 is made of materials with damping characteristics, such as foam or silica gel, the damping member 43 is located at a corner of the mass block 41, and the mass block 41 includes a first side 411 parallel to the first direction 1 and a second side 412 parallel to the second direction 2. The damping member 43 includes a first connecting section 431 and a second connecting section 432 connected to the first connecting section 431, the first connecting section 431 is disposed on the first side 411, and the second connecting section 432 is disposed on the second side 412. The elastic sheet 20 includes an intermediate connection section 23 connected to the housing 10, and a first connection arm 25 and a second connection arm 26 respectively connected to two ends of the intermediate connection section 23, where the first connection arm 25 and the second connection arm 26 both include a first section 21, a second section 22 connected to the first section 21, and a connection end 24 connected to the second section 22, where the first section 21 is used for clamping a first connection section 431 of the damping member 43, the second section 22 is used for clamping a second connection section 432 of the damping member 43, and the connection end 24 is fixedly connected to the mass block 41 for suspending the supporting mass block 41 in the accommodating space 15. This distribution of damping piece 43 can provide the damping for quality piece 41 in a plurality of directions, and need not to provide and can realize multi-direction damping effect through a plurality of dampings, and then can simplify this vibrating motor's inner structure, reduces the shared space of damping piece 43, reduces the volume, and can effectively guarantee the vibration range of oscillator 40, effectively eliminate the noise.

And, in order to optimize the internal structure of the vibration motor and keep the vibration motor small in size, in this embodiment, the mass block 41 includes a mounting hole 414 at the center for embedding the magnetic steel 42 and an avoidance cavity 415 for providing an avoidance space for the stator 30, and the stator 30 is placed in the avoidance cavity 415.

The housing 10 includes a bottom wall 13, a top wall 11 and side walls 12, the bottom wall 13 and the top wall 11 are oppositely arranged at intervals, the side walls 12 connect the bottom wall 13 and the top wall 11 and are located between the bottom wall 13 and the top wall 11, and the bottom wall 13, the top wall 11 and the side walls 12 enclose an accommodating space 15. The stator includes keeping away from the coil pack that the oscillator set up, coil pack includes the coil and inlays the pole piece in the middle of the coil. And in some embodiments, the stator further includes a magnetic conductive sheet disposed on a side of the coil assembly away from the vibrator, that is, the magnetic conductive sheet may be located between the coil assembly and the bottom wall or between the top wall and the coil assembly. Referring to fig. 4, in another embodiment, the number of the stator is two, that is, the stator includes two coil assemblies and two magnetic conductive sheets, the two coil assemblies are respectively disposed on the bottom wall and the top wall, and the two magnetic conductive sheets are respectively disposed between the bottom wall and the coil assemblies and between the top wall and the coil assemblies, so that the utility model discloses vibrating motor's compactness, the small and exquisite nature of vibrating motor volume is partially influenced. In addition, it should be noted that, in other alternative embodiments, the coil may be used as a vibrator, and the magnetic steel may be used as a stator.

The top wall 11 extends away from the accommodating space 15 to form an extending portion 131, and a surface of the extending portion 131 is provided with a circuit board 14 electrically connected to the coil 31. And the magnetic conductive sheet 33 is provided with a notch 331, and the notch 331 is used for welding and routing the coil 31.

The side of the mass 41 facing the top wall 11 or the bottom wall 13 is provided with a limiting groove 413, correspondingly, the side of the top wall 11 or the bottom wall 13 facing the mass 41 is provided with a limiting block 111, and the limiting block 111 is at least partially arranged in the limiting groove 413 for limiting the movement displacement of the mass 41.

Referring to fig. 5 and 6, the magnetic steel 42 includes at least two regions with opposite magnetic pole directions, wherein the magnetic pole directions are perpendicular to a plane formed by the first direction and the second direction, an included angle between a boundary line 421 between adjacent regions with opposite magnetic pole directions and the first direction 1 and the second direction 2 is not 90 degrees, and a central line 34 of the long axis direction of the coil 31 is aligned with the boundary line 421 in a superposition manner in a projection toward the top wall 11. Therefore, when the coil 31 is energized, the energizing coil 31 cuts the magnetic induction line to form an ampere force, the pole core 32 has a polarity after being polarized, the pole core 32 acts on the magnetic steel 42 to form an electromagnetic force, and the ampere force and the electromagnetic force act together to form a driving force F, so that the driving force F has force components in the first direction 1 and the second direction 2 along the normal direction of the boundary line 421 between the adjacent regions with opposite magnetic poles, and further provides driving forces for the movements in the two directions respectively. And, when the frequency of the current (i.e., the frequency of the driving force) is close to the frequency of the motor in a certain direction (the first direction 1 or the second direction 2), a mode in this direction is excited as a main motion direction, and vibration in a certain direction is realized.

The above embodiments of the present invention are only described, and it should be noted that, for those skilled in the art, modifications can be made without departing from the inventive concept, but these all fall into the protection scope of the present invention.

Claims

1. A vibrating motor comprises a shell with an accommodating space, an elastic sheet arranged in the accommodating space and connected with the shell, a vibrator suspended in the accommodating space through the support of the elastic sheet, a stator accommodated in the accommodating space and opposite to the vibrator, and a damping piece clamped between the elastic sheet and the vibrator, and is characterized in that: the elastic sheet and the vibrator clamp the damping piece in a first direction and a second direction, and the first direction is perpendicular to the second direction.

2. A vibration motor according to claim 1, wherein: the vibrator comprises a mass block and magnetic steel fixedly connected with the mass block, and the damping piece is clamped between the elastic piece and the mass block in the first direction and the second direction.

3. A vibration motor according to claim 2, wherein: the mass block is square and comprises a first side edge parallel to the first direction and a second side edge parallel to the second direction; the damping piece is positioned at a corner of the mass block and comprises a first connecting section arranged on a first side edge and a second connecting section arranged on a second side edge and connected with the first connecting section; the shell fragment includes the intermediate junction section that links to each other with the casing, and respectively with first linking arm and the second linking arm that intermediate junction section both ends link to each other, first linking arm and second linking arm all include the centre gripping first section, the centre gripping of the first linking section of damping piece second linking section and with the first second section that links to each other to and link to each other with the second section link to each other with the quality piece is fixed the link in order to support the quality piece.

4. A vibration motor according to claim 2, wherein: the quality piece is including being located the center in order to be used for the embedding the mounting hole of magnet steel, and for the stator provides dodges the space just the stator is located the chamber of dodging wherein.

5. A vibration motor according to any one of claims 1 to 3, wherein: the damping piece is made of foam or silica gel.

6. A vibration motor according to claim 2, wherein: the casing includes diapire and the roof that relative interval set up and connects the diapire with the lateral wall of roof, the diapire the roof with the lateral wall encloses into accommodating space, the stator is including keeping away from the coil pack that the oscillator set up, coil pack includes the coil and inlays the pole core in the middle of the coil.

7. A vibration motor according to claim 6, wherein: the stator further comprises a magnetic conductive sheet arranged on one side, far away from the oscillator, of the coil assembly.

8. A vibration motor according to claim 7, wherein: and the magnetic conduction sheet is provided with a notch for welding and routing the coil.

9. A vibration motor according to claim 6, wherein: the side surface of the mass block facing the top wall or the bottom wall is provided with a limiting groove, and the side surface of the top wall or the bottom wall facing the mass block is provided with a limiting block which is positioned in the limiting groove and used for limiting the movement displacement of the mass block.

10. A vibration motor according to claim 6, wherein: the magnet steel contains at least two regions with opposite magnetic pole directions, the included angle between the boundary line between the regions with opposite adjacent magnetic poles and the first direction and the second direction is not 90 degrees, and the central line of the long axis direction of the coil and the boundary line face the projection of the top wall to be coincided and aligned.

11. A vibration motor according to claim 10, wherein: the magnetic pole direction is perpendicular to a plane formed by the first direction and the second direction.