CN114567104B - Vibration motor - Google Patents
Vibration motor Download PDFInfo
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- CN114567104B CN114567104B CN202111683051.5A CN202111683051A CN114567104B CN 114567104 B CN114567104 B CN 114567104B CN 202111683051 A CN202111683051 A CN 202111683051A CN 114567104 B CN114567104 B CN 114567104B
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- vibration motor
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- 230000003068 static effect Effects 0.000 claims abstract description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 25
- 238000005452 bending Methods 0.000 claims description 14
- 239000004020 conductor Substances 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 10
- 238000010586 diagram Methods 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 230000003993 interaction Effects 0.000 description 3
- 230000002457 bidirectional effect Effects 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 2
- 230000005284 excitation Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000035807 sensation Effects 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 101001045744 Sus scrofa Hepatocyte nuclear factor 1-beta Proteins 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/34—Reciprocating, oscillating or vibrating parts of the magnetic circuit
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K33/00—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system
- H02K33/02—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with armatures moved one way by energisation of a single coil system and returned by mechanical force, e.g. by springs
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Apparatuses For Generation Of Mechanical Vibrations (AREA)
- Reciprocating, Oscillating Or Vibrating Motors (AREA)
Abstract
The invention discloses a vibration motor. The vibration motor comprises a shell, a first vibration system, a second vibration system, two first elastic sheets and two second elastic sheets, wherein the first vibration system is arranged in the shell along a first direction in a vibrating manner, the first vibration system comprises a vibration shell, and two first avoidance holes are formed in the vibration shell along a second direction; the two first elastic sheets are respectively connected with two sides of Yu Zhenke along the first direction and are respectively connected with the shell; when the vibrating shell is in a static state, the first elastic sheet is in a plane shape; the second vibration system is arranged in the vibration shell in a vibration mode along a second direction; each second elastic piece penetrates through one first avoiding hole, and two ends of each second elastic piece are respectively connected with the second vibration system and the side wall of the shell. The invention can simplify the assembly process of the vibration motor.
Description
Technical Field
The invention relates to the technical field of electronic devices, in particular to a vibration motor.
Background
With the development of technology, various electronic device products are entering into the work and life of people. As a core element for consumer electronic haptic feedback, electromagnetic vibration actuators are increasingly used in a wide range of applications. Simplifying the production process of the product, reducing the cost and improving the reliability, and is an important way for realizing the optimization of the product. In the related art, the double-frequency bidirectional vibration exciter has a complex process.
Disclosure of Invention
The main purpose of the invention is to provide a vibrating motor, which aims to simplify the assembly process of the vibrating motor.
In order to achieve the above object, the present invention provides a vibration motor having a first direction and a second direction intersecting each other, the vibration motor comprising:
a housing;
the first vibration system is arranged in the shell in a vibrating manner along the first direction and comprises a vibration shell, and two first avoiding holes are formed in the vibration shell along the second direction;
the two first elastic pieces are respectively connected to two sides of the vibrating shell along the first direction and are respectively connected with the shell; when the vibrating shell is in a static state, the first elastic sheet is in a plane shape;
a second vibration system vibratably mounted within the vibrating housing along the second direction; and
and two second elastic sheets, wherein each second elastic sheet penetrates through one first avoiding hole, and two ends of each second elastic sheet are respectively connected with the second vibration system and the side wall of the shell.
In an embodiment of the present invention, the housing includes a main housing and two cover plates, and the main housing is penetrated along the first direction to form two first openings; the two cover plates are respectively covered at the two first openings of the main shell; the first elastic sheet is connected to one side of the vibrating shell facing the cover plate and is connected with the main shell; the second elastic sheet is connected with the main shell.
In an embodiment of the invention, a bending part is arranged at the periphery of the main shell, and the bending part extends towards the inside of the shell; the first elastic sheet is connected to the bending part.
In one embodiment of the present invention, the vibrating shell is made of a magnetically conductive material;
the first vibration system further comprises two magnetic groups, wherein the two magnetic groups are arranged in the vibration shell and are respectively fixed at two ends of the vibration shell;
the second vibration system comprises a frame arranged in the vibration shell, an iron core arranged in the frame and a coil sleeved on the iron core in a ring mode; the two ends of the iron core are respectively arranged corresponding to the two magnetic groups.
In an embodiment of the invention, the vibration shell is provided with two second avoidance holes along the first direction, and the first elastic sheet is provided with a third avoidance hole correspondingly communicated with the second avoidance holes; a first anti-collision member is arranged on one side of each of the two cover plates, which faces the shell, and penetrates through the third avoidance hole and the second avoidance hole;
and/or one side of the magnetic group facing the iron core is provided with a second anti-collision piece.
In an embodiment of the present invention, the vibration shell includes two vibration shell bodies, and each vibration shell body is provided with the second avoidance hole; the two vibrating shell bodies are oppositely arranged; a positioning boss is arranged on the periphery of one end of each vibrating shell body facing the other vibrating shell body, and extends towards the main shell; the positioning bosses on each vibrating shell body are in one-to-one correspondence and are connected with the positioning bosses on the other vibrating shell body.
In one embodiment of the present invention, the frame has a rectangular shape and has a through hole penetrating along a longitudinal direction of the core, and the coil and the core are disposed in the through hole.
In an embodiment of the present invention, the two magnetic groups include two magnets, the two magnets of each of the magnetic groups are disposed opposite to each other along a diagonal direction of the first direction and the second direction, and magnetizing directions of the two magnets are opposite.
In an embodiment of the present invention, the vibration motor further includes a flexible circuit board including a fixing portion connected and fixed with the housing, a stretching portion connected with the fixing portion, and a connecting portion connected with an end of the stretching portion remote from the fixing portion, the connecting portion being connected and fixed with the frame.
In an embodiment of the present invention, the first vibration system further includes two gaskets, and the two gaskets are respectively fixed on inner end surfaces at two ends of the vibration shell; the two magnetic pieces are respectively arranged on the two gaskets.
According to the technical scheme, the vibration direction of the first vibration system is the first direction, the vibration direction of the second vibration system is the second direction, and the first direction is intersected with the second direction, so that the purposes of obtaining two sets of vibration systems in one single vibration motor are achieved. The first vibration system is suspended in the shell through the two first elastic sheets, the second vibration system is suspended in the vibration shell through the two second elastic sheets, and the first avoiding holes are formed in the vibration shell, so that the second elastic sheets can be provided with avoiding spaces, the purpose that the second elastic sheets are connected with the second vibration system and the shell is achieved, and the first vibration system and the second vibration system cannot interfere with each other when vibrating respectively. When the first vibration system vibrates, the first vibration system corresponds to a vibrator, and at this time, the second vibration system corresponds to a stator. When the second vibration system vibrates, the second vibration system corresponds to a vibrator, and at this time, the first vibration system corresponds to a stator. In the invention, two sets of vibration systems can be obtained in the single vibration motor, so that the repeated arrangement of the vibrator and the stator is avoided, the structural design can be simplified, the quality is reduced, and the volume is reduced. In addition, when the vibrating shell does not vibrate, the first elastic pieces are planar, so that a reserved space can be formed between the two first elastic pieces and the shell in the first direction, on one hand, when the vibrating motor falls down, the impact force can be prevented from being directly transmitted through the first elastic pieces, the protection effect is achieved, and on the other hand, an anti-collision part can be further arranged in the reserved space. Meanwhile, the first elastic sheet is planar, so that the assembly process can be simplified, and the assembly difficulty can be reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of an exploded view of an embodiment of a vibration motor according to the present invention;
FIG. 2 is a schematic diagram of a first vibration system according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a second vibration system according to an embodiment of the present invention;
FIG. 4 is a schematic diagram illustrating the assembly of a first vibration system and a second vibration system in an embodiment of a vibration motor according to the present invention;
FIG. 5 is a schematic view of a vibration motor according to an embodiment of the present invention with the main casing and the second spring plate removed;
fig. 6 is a schematic view of a part of the structure of fig. 5 at another angle.
Reference numerals illustrate:
| reference numerals | Name of the name | Reference numerals | Name of the name |
| 100 | Shell body | 111 | Bending part |
| 110 | Main shell | 200 | First vibration system |
| 120 | Cover plate | 210 | Vibrating shell |
| 210a | Second avoidance hole | 210b | First avoidance hole |
| 211 | Vibrating shell body | 212 | Positioning boss |
| 220 | Magnetic group | 221 | Magnet body |
| 230 | Gasket | 300 | Second vibration system |
| 310 | Frame | 320 | Iron core |
| 330 | Coil | ||
| 410 | First anti-collision piece | 420 | Second anti-collision piece |
| 500 | First elastic sheet | 500a | Third avoidance hole |
| 600 | Second spring piece | 700 | Flexible circuit board |
| 710 | Fixing part | 720 | Stretching part |
| 730 | Connecting part |
The implementation, functional features and advantages of the present invention will be further described with reference to the accompanying drawings in conjunction with the embodiments.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that, if directional indications (such as up, down, left, right, front, and rear … …) are included in the embodiments of the present invention, the directional indications are merely used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are correspondingly changed.
In addition, if there is a description of "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" as it appears throughout is meant to include three side-by-side schemes, for example, "a and/or B", including a scheme, or B scheme, or a scheme that is satisfied by both a and B. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present invention.
The invention provides a vibration motor which can be applied to electronic devices, wherein the electronic devices can be products such as mobile phones, tablet computers, palm game machines, palm multimedia entertainment devices and the like.
In the embodiment of the present invention, as shown in fig. 1, 2, 3, 4 and 5, the vibration motor has a first direction and a second direction which intersect, the vibration motor includes a housing 100, a first vibration system 200, a second vibration system 300, a first elastic sheet 500 and a second elastic sheet 600, the first vibration system 200 is vibratably mounted in the housing 100 along the first direction, the first vibration system 200 includes a vibration housing 210, and the vibration housing 210 is provided with two first avoidance holes 210b along the second direction; the two first elastic pieces 500 are respectively connected to two sides of the vibration shell 210 along the first direction, and are respectively connected to the housing 100; when the vibrating shell 210 is in a static state, the first elastic sheet 500 is planar; the second vibration system 300 is vibratably mounted within the vibration housing 210 in the second direction; each second elastic piece 600 is inserted into one of the first avoiding holes 210b, and two ends of each second elastic piece 600 are respectively connected with the second vibration system 300 and the side wall of the housing 100.
The vibration motor has a width direction, a length direction, and a height direction. As shown, the left-right direction is indicated as the longitudinal direction of the vibration motor; the up-down direction is expressed as the height direction of the vibration motor; the front-rear direction is denoted as the width direction of the vibration motor. The first direction and the second direction may be any two directions selected from an up-down direction, a left-right direction, and a front-rear direction. The above embodiments and the following embodiments will be described mainly with the first direction being the up-down direction and the second direction being the front-back direction.
In this way, the two first elastic pieces 500 cooperate to suspend the first vibration system 200 in the vibration shell 210, so that the first vibration system 200 can move upward or downward, and the corresponding first elastic pieces 500 can provide elastic force for the first vibration system 200, so that the first vibration system 200 can vibrate continuously. When the first vibration system 200 vibrates in the first direction, the first elastic sheet 500 is elastically deformed by the force between the first vibration system 200 and the bending part 111, thereby providing the first vibration system 200 with an elastic force that linearly guides and returns to the equilibrium position, so that the first vibration system 200 can continuously vibrate.
The two second elastic pieces 600 cooperate to suspend the second vibration system 300 in the vibration shell 210, so that the second vibration system 300 can move forward or backward, and the corresponding second elastic pieces 600 can provide elastic force for the second vibration system 300, so that the second vibration system 300 can vibrate continuously. When the second vibration system 300 vibrates in the second direction, the second elastic sheet 600 is elastically deformed by the acting force between the second vibration system 300 and the case 100, thereby providing the second vibration system 300 with an elastic force that linearly guides and returns to the equilibrium position, so that the second vibration system 300 can continuously vibrate.
In this embodiment, two ends of the second elastic piece 600 are respectively connected to the second vibration system 300 and the main casing 110, and do not have any direct connection relationship with the first vibration system 200, i.e. the first vibration system 200 is not driven to vibrate when the second vibration system 300 vibrates, so that the first vibration system 200 can be used as a stator when the second vibration system 300 is used as a vibrator. Similarly, when the first vibration system 200 vibrates, the second vibration system 300 is not driven to vibrate, so that the second vibration system 300 can be used as a stator when the first vibration system 200 is used as a vibrator. In the invention, two sets of vibration systems can be obtained in the single vibration motor, so that the repeated arrangement of the vibrator and the stator is avoided, the structural design can be simplified, the quality is reduced, and the volume is reduced.
It can be understood that the vibration direction of the first vibration system 200 is a first direction, the vibration direction of the second vibration system 300 is a second direction, and the first direction intersects with the second direction, so that the purpose of obtaining two sets of vibration systems in one single vibration motor is achieved. The first vibration system 200 is suspended in the housing 100 through two first elastic pieces 500, the second vibration system 300 is suspended in the vibration shell 210 through two second elastic pieces 600, and an avoidance space is provided for the second elastic pieces 600 by arranging first avoidance holes 210b in the vibration shell 210, so that the purpose that the second elastic pieces 600 are connected with the second vibration system 300 and the housing 100 is achieved, and the first vibration system 200 and the second vibration system 300 do not interfere with each other when vibrating respectively. In addition, in the present invention, when the vibration shell 210 does not vibrate, the first elastic pieces 500 are planar, so that a reserved space can be formed between the two first elastic pieces 500 and the shell 100 in the first direction, on one hand, when the vibration motor falls, the impact force can be prevented from being directly transmitted through the first elastic pieces 500, so as to play a role in protection, and on the other hand, an anti-collision component can be further arranged in the reserved space. Meanwhile, the planar first elastic sheet 500 is opposite to the zigzag elastic sheet, so that the assembly process can be simplified and the assembly difficulty can be reduced during assembly.
In an embodiment of the present invention, as shown in fig. 1, the housing 100 includes a main housing 110 and two cover plates 120, and the main housing 110 is penetrated along the first direction to form two first openings; the two cover plates 120 are respectively covered at the two first openings of the main shell 110; the first elastic piece 500 is connected to a side of the vibrating shell 210 facing the cover plate 120, and is connected to the main shell 110; the second spring 600 is connected to the main housing 110.
It can be appreciated that when the vibration motor is assembled, the first vibration system 200, the second vibration system 300, the second elastic piece 600 and the first elastic piece 500 may be installed in the main housing 110, and then the two cover plates 120 cover the two first openings of the main housing 110, so that the assembly is simple and quick.
As for the connection and fixation of the cover plate 120 and the main housing 110, various connection methods are available. For example, the cover plate 120 is fixed to the main case 110 by welding; for another example, a fastening structure matched with each other is arranged on the cover plate 120 and the main shell 110, so that the cover plate 120 and the main shell 110 are connected and fixed through the fastening structure; for another example, the cover plate 120 may be adhesively fixed to the main housing 110 using an adhesive material. Of course, in other embodiments, screws may be used to fixedly attach the cover plate 120 to the main housing 110. The design can be reasonably designed according to actual production requirements, and is not limited herein.
In an embodiment of the present invention, as shown in fig. 1, a bending portion 111 is disposed at a periphery of the main housing 110, and the bending portion 111 extends toward the inside of the housing 100; the first elastic piece 500 is connected to the bending portion 111.
It will be appreciated that providing the bending portion 111 extending toward the inside of the housing 100 at the periphery of the main housing 110 may provide a location for the installation of the first elastic sheet 500. The bending portion 111 extends towards the inside of the housing 100 to be disposed near the vibration shell 210, so that the first elastic piece 500 may be a flat elastic piece, and a sufficient space may be reserved by using the flat elastic piece. The first elastic piece 500 is connected with the main housing 110, and the assembly process can be simplified relative to the manner in which the first elastic piece 500 is connected with the cover plate 120.
In this embodiment, the periphery of the first elastic sheet 500 is provided with a connecting piece, the connecting piece is correspondingly connected with the bending portion 111, and the setting of the connecting piece not only plays a role in fixed connection, but also plays a role in positioning, so that the assembly efficiency is improved.
In an embodiment of the present invention, as shown in fig. 1 to 6, the vibrating shell 210 is made of a magnetically conductive material;
the first vibration system 200 further includes two magnetic groups 220, where the two magnetic groups 220 are both disposed in the vibration shell 210 and are fixed at two ends of the vibration shell 210 respectively;
the second vibration system 300 includes a frame 310 provided in the vibration housing 210, an iron core 320 installed in the frame 310, and a coil 330 looped around the iron core 320; the two ends of the iron core 320 are respectively disposed corresponding to the two magnetic groups 220.
In this embodiment, one of the second elastic pieces 600 is connected to one end of the frame 310, and the other end is tilted toward a direction away from the second vibration system 300 to be connected to the main housing 110; the other second spring 600 is connected to the other end of the frame 310, and the other end is tilted in a direction away from the second vibration system 300 to be connected to the main housing 110.
The vibration shell 210 and the frame 310 may be made of magnetic conductive materials, so as to shield magnetic force lines, avoid mutual interference, concentrate magnetic force lines generated by the coil 330 and the iron core 320, promote interaction force with the magnetic assembly 220, and make the vibration shell 210 and the frame 310 of other materials.
It will be appreciated that upon charging of the coil 330, the magnetic stack 220 in the first vibration system 200 and the iron core 320 in the second vibration system 300 generate an interaction force. When the frequency of the input current is the same as or similar to the natural frequency of the first vibration system 200, the first vibration system 200 resonates, producing vibration excitation in a first direction. The magnetic assembly 220 is disposed in the vibration housing 210 and connected to the vibration housing 210, and when the magnetic assembly 220 receives the force of the iron core 320, the magnetic assembly 220 vibrates along the first direction, that is, the first vibration system 200 corresponds to a vibrator, and the second vibration system 300 corresponds to a stator. When the frequency of the input current is the same as or similar to the natural frequency of the second vibration system 300, the second vibration system 300 resonates to generate vibration excitation in the second direction, the second vibration system 300 corresponds to a vibrator, and at this time, the first vibration system 200 corresponds to a stator. In the invention, in the single vibrating motor, two sets of vibrating systems can be obtained by utilizing two principles of the moving coil and the moving magnet, so that the repeated arrangement of the vibrator and the stator is avoided, the structural design can be simplified, the quality is reduced, and the volume is reduced.
In an embodiment of the present invention, as shown in fig. 1 and 2, each of the two magnet groups 220 of the vibration motor includes two magnets 221, the two magnets 221 of each magnet group 220 are disposed opposite to each other along a diagonal direction where the first direction and the second direction intersect, and magnetizing directions of the two magnets 221 are opposite. For example, taking one of the magnet groups 220 as an example, each magnet 221 of the magnet group 220 has a first side extending in a first direction, a second side connected to the first side and extending in a second direction, and a diagonal side connecting the first side and the second side; the diagonal sides of the two magnets 221 of the magnetic group 220 are disposed opposite to each other. The two magnets 221 may be formed by dividing one magnet along a diagonal line, or may be formed by separately magnetizing two magnets.
The principle of the vibration motor for achieving bidirectional vibration is relatively common, and is briefly summarized as follows:
when an operating frequency is input to the coil 330 of the vibration motor, the vibration motor magnetizes the two magnetic groups 220 diagonally (°) and; at this time, the magnet located at the upper side of one of the magnet groups 220 is the N pole, and the magnet located at the lower side is the S pole; the magnets of the other magnet group 220 positioned at the upper side are used as S poles, and the magnets positioned at the lower side are used as N poles; the two magnetic groups 220 each have a component force in a first direction and a second direction by the interaction with the core 320. At this time, if the operating frequency of the vibration motor input is identical to the vibration frequency of the first vibration system 200, the first vibration system 200 as a whole repeatedly vibrates in the first direction, so that the vibration motor generates a vibration sensation in the first direction. And if the operating frequency of the vibration motor input is identical to the vibration frequency of the second vibration system 300, the second vibration system 300 as a whole repeatedly vibrates in the second direction, so that the vibration motor generates a vibration sensation in the second direction.
Wherein the first vibration system 200 and the second vibration system 300 have different masses, two different vibration frequencies can be obtained. The vibration of the first vibration system 200 and the vibration of the second vibration system 300 are independent and do not interfere with each other.
When the vibration motor falls, the second vibration system 300 and the first vibration system 200 may perform a relative motion, so that a collision may occur, the stability of the first vibration system 200 is higher than that of the second vibration system 300, the vibration shell 210 of the first vibration system 200 may not affect the iron core 320 and the magnetic set 220 even if it collides with the housing 100, and if the second vibration system 300 collides with the first vibration system 200, the second vibration system 300 may adversely affect the iron core 320 or the magnetic set 220, thereby affecting the normal function of the vibration motor, so that anti-collision protection needs to be designed for the iron core 320 and the magnetic set 220.
In an embodiment of the present invention, as shown in fig. 1, 2, 4 and 5, the vibration shell 210 is provided with two second avoiding holes 210a along the first direction, and the first elastic sheet 500 is provided with a third avoiding hole 500a correspondingly communicated with the second avoiding holes 210a; the two sides of the cover plates 120 facing the housing 100 are respectively provided with a first anti-collision member 410, and the first anti-collision member 410 is inserted into the third avoidance hole 500a and the second avoidance hole 210a.
It may be appreciated that, when the two cover plates 120 are respectively provided with the first anti-collision members 410 on the sides facing the housing 100, and the first anti-collision members 410 are disposed through the third avoidance holes 500a and the second avoidance holes 210a, so as to correspond to the frame 310 of the second vibration system 300, when the second vibration system 300 moves along the first direction, the first anti-collision members 410 can play a role of buffering and supporting the second vibration system 300, so as to avoid the second vibration system 300 from striking the first vibration system 200, and improve the reliability of the vibration motor when falling.
In an embodiment of the present invention, as shown in fig. 1 and 6, a second anti-collision member 420 is disposed on a side of the magnetic assembly 220 facing the iron core 320.
It can be appreciated that the second anti-collision member 420 is disposed on a side of the magnetic assembly 220 facing the iron core 320, and when the second vibration system 300 moves in the left-right direction, the second anti-collision member 420 can protect the magnet 221, so as to prevent the iron core 320 from directly striking the magnetic assembly 220, thereby avoiding damage and improving the reliability of the vibration motor when falling.
In this embodiment, the first and second anti-collision members 410 and 420 are simultaneously disposed, and the first and second anti-collision members 410 and 420 can play a role in buffering in the up-down direction and the left-right direction, so as to prevent the second vibration system 300 from striking the first vibration system 200. The reliability of the vibration motor when dropped can be improved.
In an embodiment of the present invention, as shown in fig. 1 and 2, the vibration case 210 includes two vibration case bodies 211, and each vibration case body 211 is provided with the second avoiding hole 210a; the two vibrating shell bodies 211 are oppositely arranged; a positioning boss 212 is arranged at the periphery of one end of each vibrating shell body 211 facing the other vibrating shell body 211, and the positioning boss 212 extends towards the main shell 110; the positioning boss 212 on each vibration shell body 211 is in one-to-one correspondence and connected with the positioning boss 212 on the other vibration shell body 211.
It will be appreciated that the second vibration system 300 may be conveniently assembled in the vibration housing 210 by the two vibration housing bodies 211 cooperatively forming the vibration housing 210. And meanwhile, the positioning boss 212 is arranged to facilitate the positioning and fixed connection of the two vibration shell bodies 211.
In an embodiment of the present invention, as shown in fig. 1 and 3, the frame 310 has a rectangular shape and has a through hole penetrating along a length direction of the core 320, and the coil 330 and the core 320 are disposed in the through hole.
It will be appreciated that the frame 310 of the above design can encapsulate the core 320 and the coil 330 in the through hole, and fix the core 320 and the coil 330.
In the prior art, a flexible circuit board 700 (Flexible Printed Circuit Board, abbreviated as FPCB) is usually disposed in the vibration motor, and after the flexible circuit board 700 is fixed in the housing 100 of the vibration motor, a plastic bracket is further disposed on the iron core 320, and then the flexible circuit board 700 is connected to and fixed with the plastic bracket on the iron core 320. Thus, the number of parts of the vibration motor is increased, thereby increasing the cost of the vibration motor.
In an embodiment of the present invention, as shown in fig. 1, 5 and 6, the vibration motor further includes a flexible circuit board 700, the flexible circuit board 700 includes a fixing portion 710 connected and fixed with the housing 100, a stretching portion 720 connected with the fixing portion 710, and a connection portion 730 connected with an end of the stretching portion 720 remote from the fixing portion 710, the connection portion 730 being connected and fixed with the frame 310.
It can be appreciated that, when the flexible circuit board 700 is mounted, the fixing portion 710 of the flexible circuit board 700 is fixedly connected to the housing 100, and the extension portion 720 of the flexible circuit board 700 extends from the fixing portion 710 toward the second vibration system 300, so that the connection portion 730 connected to the end of the extension portion 720 remote from the fixing portion 710 can be directly connected and fixed to the frame 310. The stretching portion 720 has better flexibility, so that the stretching portion 720 of the flexible circuit board 700 can be naturally bent or stretched to stretch away in the vibration or falling process of the vibration motor, so that the flexible circuit board 700 is not easy to break, and the situation that the flexible circuit board 700 is torn and broken in the vibration or falling process can be reduced. In this way, in this embodiment, the connection portion 730 of the flexible circuit board 700 and the frame 310 can be directly connected and fixed without disposing a plastic bracket on the iron core 320, and the stability of the flexible circuit board 700 can be ensured.
In this embodiment, the flexible circuit board 700 may be connected to the surface of the frame 310 by an adhesive manner, the frame 310 plays a role of a bracket, a special bracket is omitted, the adhesive area is large, and the process is simplified; the traces of the flexible circuit board 700 are all located at one side of the vibration space of the second vibration system 300, so that interference between the flexible circuit board 700 and the second vibration system 300 during vibration can be avoided compared with the case of being adhered to the iron core 320.
Based on any of the above embodiments, in order to fix the magnetic assembly 220, as shown in fig. 1, 2, 4 and 6, the first vibration system 200 further includes two shims 230, where the two shims 230 are respectively fixed on inner end surfaces of two ends of the vibration shell 210; the two magnetic groups 220 are respectively mounted to the two shims 230.
The foregoing description is only of the optional embodiments of the present invention, and is not intended to limit the scope of the invention, and all the equivalent structural changes made by the description of the present invention and the accompanying drawings or the direct/indirect application in other related technical fields are included in the scope of the invention.
Claims (7)
1. A vibration motor, the vibration motor having orthogonal first and second directions, the vibration motor comprising:
a housing;
the first vibration system is arranged in the shell in a vibrating manner along the first direction and comprises a vibration shell, and two first avoiding holes are formed in the vibration shell along the second direction;
the two first elastic pieces are respectively connected to two sides of the vibrating shell along the first direction and are respectively connected with the shell; when the vibrating shell is in a static state, the first elastic sheet is planar and orthogonal to the first direction;
a second vibration system vibratably mounted within the vibrating housing along the second direction; and
two second elastic pieces, each of which is penetrated through one of the first avoidance holes, and two ends of each of which are respectively connected with the second vibration system and the side wall of the shell;
the shell comprises a main shell and two cover plates, wherein the main shell is penetrated along the first direction and is provided with two first openings; the two cover plates are respectively covered at the two first openings of the main shell; the first elastic sheet is connected to one side of the vibrating shell facing the cover plate and is connected with the main shell; the second elastic sheet is connected with the main shell;
the periphery of the main shell is provided with a bending part, and the bending part extends towards the inside of the shell; the first elastic sheet is connected to the bending part;
the vibrating shell is made of magnetic conductive materials;
the first vibration system further comprises two magnetic groups, wherein the two magnetic groups are arranged in the vibration shell and are respectively fixed at two ends of the vibration shell;
the second vibration system comprises a frame arranged in the vibration shell, an iron core arranged in the frame and a coil sleeved on the iron core in a ring mode; the two ends of the iron core are respectively arranged corresponding to the two magnetic groups.
2. The vibration motor of claim 1, wherein the vibration shell is provided with two second avoidance holes along the first direction, and the first elastic sheet is provided with a third avoidance hole correspondingly communicated with the second avoidance holes; a first anti-collision member is arranged on one side of each of the two cover plates, which faces the shell, and penetrates through the second avoidance hole and the third avoidance hole;
and/or one side of the magnetic group facing the iron core is provided with a second anti-collision piece.
3. The vibration motor of claim 2, wherein said vibration housing comprises two vibration housing bodies, each of said vibration housing bodies being provided with said second relief hole; the two vibrating shell bodies are oppositely arranged; a positioning boss is arranged on the periphery of one end of each vibrating shell body facing the other vibrating shell body, and extends towards the main shell; the positioning bosses on each vibrating shell body are in one-to-one correspondence and are connected with the positioning bosses on the other vibrating shell body.
4. The vibration motor according to claim 1, wherein the frame has a rectangular shape and has a through hole penetrating in a longitudinal direction of the core, and the coil and the core are provided in the through hole.
5. The vibration motor of claim 1, wherein the two magnet groups include two magnets, the two magnets of each of the magnet groups being disposed opposite each other in a diagonal direction of the first direction and the second direction, and magnetizing directions of the two magnets being opposite.
6. The vibration motor according to any one of claims 1 to 5, further comprising a flexible circuit board including a fixing portion to which the housing is fixedly connected, a stretching portion to which the fixing portion is connected, and a connecting portion to which an end of the stretching portion remote from the fixing portion is connected, the connecting portion being fixedly connected to the frame.
7. The vibration motor according to any one of claims 1 to 5, wherein the first vibration system further comprises two shims, and the two shims are respectively fixed to inner end surfaces of both ends of the vibrating shell; the two magnetic pieces are respectively arranged on the two gaskets.
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