CN216016681U

CN216016681U - Vertical linear vibration motor

Info

Publication number: CN216016681U
Application number: CN202122473481.6U
Authority: CN
Inventors: 邹子丹; 陈聪; 朱群馨
Original assignee: Sichuan Awa Seimitsu Electric Co ltd
Current assignee: Sichuan Awa Seimitsu Electric Co ltd
Priority date: 2021-10-14
Filing date: 2021-10-14
Publication date: 2022-03-11
Anticipated expiration: 2031-10-14

Abstract

The utility model relates to the technical field of vibration motors, in particular to a vertical linear vibration motor, which comprises a shell with a containing space, a vibrator component with a mass block, a stator component and an elastic component; the utility model discloses a vibration motor, including the casing, the elastic component both ends are connected respectively the quality piece with the casing will the quality piece suspension in the casing, the vibration subassembly vibrates along self direction of height, the elastic component include with the quality piece or the fixed part that the casing is connected connects the elastic arm of fixed part, the elastic component is buckled from its fixed part an organic whole and is extended and set up damping portion, replaces the bubble cotton that realizes the damping action among the current vertical linear vibrating motor, guarantees the vibration subassembly in vibration process the uniformity of the damping numerical value of elastic component and damping portion, ensures the stability of vibration performance promptly, has reduced spare part quantity and assembly process again.

Description

Vertical linear vibration motor

Technical Field

The utility model relates to a vibrating motor technical field, in particular to perpendicular linear vibrating motor.

Background

The miniature vibration motor is a vibration feedback component applied to intelligent equipment such as a mobile phone, a watch and the like. The linear vibration motor is a structure which supports a vibrator assembly to make linear motion by means of a spring and converts electric energy into vibration. In the prior art, a vertical linear vibration motor is shown in fig. 1, a mass block 1 is suspended in a housing 3 through an elastic member 2, the elastic member 2 supports the mass block 1 to vibrate along the thickness direction, the elastic members 2 are arranged on the upper side and the lower side of the thickness direction of the mass block 1, one end of each elastic member 2 is connected with the mass block 1, the other end of each elastic member 2 is connected with the housing 3, the elastic members 2 are connected in the housing 3, the right end of each upper elastic member 2 is connected with the housing 3, and a certain gap is formed between the right end of each elastic member 2 and the housing 3 and between the left end and the mass block 1 to serve as an upward vibration space of the mass block 1. In order to ensure that the mass block 1 cannot directly impact the shell 3 to generate noise, and simultaneously play a role in buffering in the compression process of the elastic part 2 to prevent the elastic part 2 from impacting the shell 3 to deform, foam 4 can be adhered in a gap between the elastic part 2 and the shell 3 or magnetic fluid is filled in the conventional vertical linear vibration motor to realize the damping effect of the vibration motor. The test and the use process find that the mass block 1 is different from the elastic piece 2 in materials and the damping numerical values of the foam 4 and the elastic piece are inconsistent in the vibration process, so that the vibration performance of the vibration motor can be influenced, and the bonded foam 4 has the risk of falling off due to infirm bonding.

SUMMERY OF THE UTILITY MODEL

For the quality piece of overcoming among the prior art vertical linearity vibrating motor steep cotton and the inconsistent and cotton problem that easily drops of bubble of elastic component damping numerical value at the displacement in-process, the utility model provides a vertical linearity vibrating motor realizes having reduced spare part quantity and equipment process, optimizes the vibration performance. The specific technical scheme is as follows:

a vertical linear vibration motor includes a housing having an accommodation space, a vibrator assembly having a mass block, a stator assembly having a coil, and an elastic member; the utility model discloses a vibration damping device, including the oscillator subassembly, stator module, elastic component, fixed part and casing, the oscillator subassembly with stator module sets up relatively in the accommodation space, the elastic component both ends are connected along vertical direction respectively the quality piece with the casing will the oscillator subassembly suspend in the casing, the elastic component include with the quality piece or the fixed part that the casing is connected connects the elastic arm of fixed part, certainly the free end of fixed part is to keeping away from the damping portion that fixed part and bending type extend formation, the damping portion including be on a parallel with the buffer portion of fixed part, connection the fixed part with the arc portion of buffer portion.

Furthermore, the elastic piece is formed by integral punch forming; the damping part with the quality piece is located respectively the both sides of fixed part, the damping part with have the clearance between the casing.

Furthermore, the elastic part comprises fixing parts which are positioned on two sides of the elastic arm and are parallel to each other, and the elastic arm is arranged in a straight plate shape and is obliquely connected between the mass block and the shell.

Further, the fixed part and the damping part are of U-shaped structures.

Further, the arc-shaped part is consistent with the width of the fixing part, and the length of the buffering part is smaller than or equal to that of the fixing part.

Further, the buffering part is provided with a limiting part.

Further, the limiting part may be configured as a spiral shape, or one of an arch shape and an arc shape protruding from the surface of the buffer part.

Further, the buffer portion is provided with a plurality of gaps uniformly in the extending direction.

Furthermore, the elastic parts are respectively arranged on two sides of the mass block in the vibration direction, the width of the elastic arm is smaller than that of the fixing part, a long and narrow notch is formed in the middle of the elastic arm in the length direction, and the coil can freely penetrate through the notch.

Furthermore, the elastic part is arranged into two separated pieces, and the notch is formed between the two elastic arms.

The utility model has the advantages that: the fixing part of the vertical linear vibration motor integrally extends and bends to form a U-shaped damping part to replace foam in the conventional vertical linear vibration motor, so that the foam is prevented from falling off and losing efficacy; in the vibration process of the mass block in the vertical direction, the elastic part and the damping part are made of the same material, so that the consistency of displacement damping values of the elastic part and the damping part is ensured, the stability of vibration performance is ensured, and the number of parts and assembly processes are reduced.

Drawings

Fig. 1 is a schematic cross-sectional view of a vertical linear vibration motor in the related art.

Fig. 2 is a schematic cross-sectional view of a vertical linear vibration motor according to the present invention.

Fig. 3 is a schematic cross-sectional view of the elastic member according to the first embodiment of the present invention.

Fig. 4 is a schematic perspective view of the elastic member according to the first embodiment of the present invention.

Fig. 5 is a schematic perspective view of an elastic member according to a second embodiment of the present invention.

Fig. 6 is a schematic cross-sectional view of an elastic member according to a third embodiment of the present invention.

Fig. 7A is a schematic cross-sectional view of an elastic member having an arch stopper according to a fourth embodiment of the present invention.

Fig. 7B is a schematic cross-sectional view of an elastic member having an arc-shaped position-limiting portion according to a fourth embodiment of the present invention.

Fig. 7C is a schematic cross-sectional view of an elastic member having a spiral position-limiting portion according to a fourth embodiment of the present invention.

Fig. 8 is a schematic perspective view of an elastic member according to a fifth embodiment of the present invention.

Fig. 9 is a schematic plan view of a separable composite elastic member according to a sixth embodiment of the present invention.

Fig. 10 is a schematic structural view in the vertical direction of the sixth embodiment of the present invention.

Wherein:

1-a mass block;

2-an elastic member; 21-a fixed part; 22-a tension arm; 221-incision; 23-an arc-shaped portion;

24-a buffer; 241-gap; 242-a limiting part; 25-a connecting part;

3-a shell;

4-soaking cotton;

5-coil

Detailed Description

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. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The structure of the vertical linear vibration motor of the present invention is shown in fig. 2, and includes a housing 3 having a receiving space (not shown), a stator assembly (not shown) including a coil 5, a vibrator assembly (not shown) including a mass block 1, and an elastic member 2. The stator assembly and the vibrator assembly are oppositely arranged in the accommodating space of the shell 3 at intervals. The upper side and the lower side of a mass block 1 of the vibrator component are fixedly connected with elastic pieces 2, one end of each elastic piece 2 is connected with the vibrator component, the other end of each elastic piece 2 is connected with a shell 3, the vibrator component is suspended in the shell 3, the interval between the vibrator component and the shell 3 is a vibration space, the elastic pieces 2 are obliquely connected to the upper side and the lower side of the mass block 1, unilateral symmetry is formed by parallel arrangement, and the balanced vibration effect of the vertical linear vibration motor is guaranteed. The center part of the mass block 1 is provided with a through hole (not shown), magnetic steel (not shown) is arranged in the through hole, a coil 5 in the stator assembly vertically penetrates through the through hole of the mass block 1 and is arranged opposite to the magnetic steel (not shown) in the mass block 1, an external power supply (not marked) of a circuit board of the stator assembly supplies power to the coil 5, the energized coil 5 and the magnetic steel in the mass block 1 interact to generate a magnetic field, and therefore the vibrator assembly is driven to do up-and-down circular reciprocating motion in the thickness direction of the mass block 1, and vibration is generated. The utility model discloses on the basis of current perpendicular linear vibrating motor structure, damping portion (not marking) that the free end of elastic component 2 set up, damping portion and fixed part 21 form and have elastic U-shaped bending structure, the setting of damping portion has replaced the cotton 4 of bubble that current perpendicular linear vibrating motor played the damping effect, stopped the cotton 4 of bubble and taken place the risk that drops because of bonding insecure, can prevent that the direct striking casing 3 of vibrator subassembly from taking place the noise, prevent that elastic component 2 from striking casing 3 from taking place to warp simultaneously. The damping portion includes a cushioning portion 24 parallel to the fixing portion 21, and an arc portion 23 connecting the respective fixing portion 21 and cushioning portion 24. The damping part and the elastic part 2 are integrally formed in a punch mode, so that the damping part and the elastic part 2 are made of the same materials, the consistency of displacement damping values of the damping part and the elastic part 2 in the vibration process of the vibrator component in the vertical direction is guaranteed, the stability of vibration performance is guaranteed, and the number of parts and assembly processes are reduced. It should be noted that, the damping portion is to replace the foam in the prior art, so the damping portion should be located between the mass block 1 and the housing 3, in a specific embodiment, a space is provided between the mass block 1 and the housing 3 to provide a vertical reciprocating vibration space of the vibrator assembly, the damping portion is disposed on two sides of the fixing portion 21 opposite to the mass block 1, and a gap should be provided between the damping portion and the housing 3, the damping portion is disposed diagonally in the vibration direction to prevent the mass block 1 from directly impacting the housing 3 in the vibration process of the vibrator assembly, so as to reduce the risk of dropping of the fixing portion 21 and deformation of the elastic member 2, and achieve the up-and-down damping effect.

The utility model discloses a first embodiment, the structure of elastic component 2 is as shown in fig. 2 to fig. 4, elastic component 2 is formed by the integrative punching press of sheet metal material area, elastic component 2 includes length direction both ends dislocation set and the fixed part 21 that is parallel to each other, connect the elastic arm 22 of fixed part 21, the elastic arm 22 slope sets up between vibrator subassembly and casing, wherein the free end of one end fixed part 21 forms arc portion 23 to keeping away from the crooked extension of 1 direction of quality piece with the same width, guarantee damped stability, arc portion 23 is terminal to extend along being on a parallel with fixed part 21 direction and form buffer 24, the length less than or equal to of buffer 24 fixed part 21's length, conflict and lead to elastic arm 22 to warp at vibration in-process damping portion and elastic arm 22 in order to prevent the vibrator subassembly. The middle part of the elastic arm 22 is provided with a slit 221, and the slit 221 and the through hole of the mass block 1 are correspondingly arranged for penetrating and avoiding the coil 5. Specifically, the radius of the bending outer circle of the arc portion 23 is 0.3mm, the bending starting point is the free end of the fixing portion 21, and the bending starting point extends 1.3mm to the plane after bending. At this time, the maximum stroke of the mass block 1 is reduced to 0.48mm from the original limit compression amount of the upper and lower foam. The design principle of the utility model is that through the change of spring self shape, form the U-shaped portion of damping that one end has the cushioning effect, replace original bubble cotton 4 and play the cushioning effect.

The utility model discloses the second embodiment, the structure of elastic component 2 is as shown in figure 5, the whole shape of vertical direction and the connected mode of elastic component 2 are the same with the first embodiment, free end at the one end fixed part 21 of elastic component 2 extends and forms "U" shape bending structure, arc portion 23 and buffer portion 24 all are by the crooked extension formation of the same width of fixed part 21, in this embodiment, the even interval of buffer portion 24 is provided with a plurality of clearances 241, buffer portion 24 is "claw" form, when the buffer strength of buffer portion is too big, the setting of clearance 241 can be used to adjust damping performance.

In the third embodiment of the present invention, the elastic member 2 is as shown in fig. 6, and on the basis of the first embodiment, the free ends of the fixing portions 21 on both sides of the elastic member 2 are bent and extended to form the arc portion 23 and the buffer portion 24 with the same width. In this embodiment, the fixing portions 21 on both sides of the elastic member are provided with U-shaped bending damping portions, the bending directions of the U-shaped bending damping portions extend relatively, and the free ends of the buffering portions 24 extend toward the elastic arms 22. When the vibration motor needs a high damping performance, the two ends of the fixing portion 21 may be bent in a U-shape to improve the damping effect of the elastic member 2.

The fourth embodiment of the present invention, the elastic member 2 is shown in fig. 7, and for further enhancing the damping effect of the elastic member 2 to the vibration motor, the elastic member can be provided with the spacing portion 242 protruding from the surface of the buffering portion 24 in the buffering portion 24 on the basis of the first to third embodiments. In fig. 7A, the position-limiting portion 242 has an arch shape; in fig. 7B, the stopper 242 has a circular arc shape; in fig. 7C, the stopper 242 has a spiral shape. The limiting portion 241 functions to provide secondary buffering, so that the damping effect of the elastic member 2 is more gradual.

The utility model discloses fifth embodiment, elastic component 2 is as shown in fig. 8, and the fixed part 21 and the elasticity arm 22 of elastic component 2 are the rectangle setting, and wherein the width of fixed part 21 is greater than the width of elasticity arm 22, is provided with connecting portion 25 between fixed part 21 and the elasticity arm 22. The width of the connecting portion 25 gradually decreases from the width of the fixing portion 21 to the width of the elastic arm 22 in the longitudinal direction. The one side fixing portion 21 of the elastic member 2 may be provided with a damping portion bent in a U-shape. In this embodiment, at least one side of the elastic arm 22 has a notch 221 formed on the edge in the length direction for passing and avoiding the coil 5, and the through hole formed in the center or the edge of the side wall of the mass block 1 corresponds to the notch 221.

The utility model discloses sixth embodiment, elastic component 2 is as shown in fig. 9 and fig. 10, and elastic component 2 is formed by the combination of the elastic component 2 of two separations, and two fixed part 21 and two equal separation settings of the elastic arm 22, and the relative lateral wall edge of the elastic arm 22 of two separations sets up incision 221, and two incisions enclose synthetic incision 221 that is used for wearing to establish coil 5. Preferably, the two separated elastic members 2 are arranged in a crossed manner to form the elastic members above and below the mass block 1 in a crossed and symmetrical manner, so that the vibration effect of the vibration motor is more stable, and the damping parts of the U-shaped structures are arranged on the same side fixing part 21 of the connecting shell 3 or the mass block 1, so that the consistency of displacement damping values of the vibration motor assembly in the vertical vibration process due to the elastic members 2 is realized.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A vertical linear vibration motor includes a housing having an accommodation space, a vibrator assembly having a mass block, a stator assembly having a coil, and an elastic member; the utility model discloses a vibration generator, including the fixed part, the fixed part is connected to the elastic component, the elastic component both ends are connected along vertical direction respectively the quality piece with the casing will the vibration generator subassembly suspend in the casing, its characterized in that, the elastic component include with the quality piece or the fixed part that the casing is connected connects the elastic arm of fixed part, certainly the free end of fixed part is to keeping away from the damping portion that fixed part and bending type extend and form, the damping portion is including being on a parallel with the buffer portion of fixed part, connection the fixed part with the arc portion of buffer portion.

2. The vertical linear vibration motor of claim 1, wherein the elastic member is integrally press-molded; the damping part with the quality piece is located respectively the both sides of fixed part, the damping part with have the clearance between the casing.

3. The vertical linear vibration motor of claim 2, wherein the elastic member comprises fixing portions parallel to each other on both sides of the elastic arm, and the elastic arm is formed in a straight plate shape and is connected between the mass and the housing with an inclination.

4. The vertical linear vibration motor of claim 2, wherein the fixing portion and the damping portion have a U-shaped structure.

5. The vertical linear vibration motor of claim 2, wherein the arc-shaped portion is identical to the width of the fixing portion, and the length of the buffer portion is less than or equal to the length of the fixing portion.

6. The vertical linear vibration motor of claim 2, wherein the buffer portion is provided with a stopper portion.

7. The vertical linear vibration motor of claim 6, wherein the stopper portion is provided in one of a spiral shape and an arc shape or a protrusion protruding from a surface of the buffer portion.

8. The vertical linear vibration motor according to any one of claims 1 to 7, wherein the buffer portion is uniformly provided with a plurality of gaps in the extending direction.

9. The vertical linear vibration motor of claim 3, wherein the elastic members are respectively disposed at both sides of the vibration direction of the mass, the width of the elastic arm is smaller than that of the fixing portion, a slit is formed at a middle position of the elastic arm in the length direction, and the coil can freely penetrate through the slit.

10. The vertical linear vibration motor of claim 9, wherein the elastic member is provided in two separate pieces, and the cut is formed between the two elastic arms.