CN114567104A - Vibration motor - Google Patents
Vibration motor Download PDFInfo
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- CN114567104A CN114567104A CN202111683051.5A CN202111683051A CN114567104A CN 114567104 A CN114567104 A CN 114567104A CN 202111683051 A CN202111683051 A CN 202111683051A CN 114567104 A CN114567104 A CN 114567104A
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- shell
- vibration system
- housing
- 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 26
- 238000005452 bending Methods 0.000 claims description 8
- 125000006850 spacer group Chemical group 0.000 claims description 6
- 239000004020 conductor Substances 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 10
- 230000008569 process Effects 0.000 abstract description 8
- 239000012634 fragment Substances 0.000 description 4
- 230000003993 interaction Effects 0.000 description 4
- 230000002829 reductive effect Effects 0.000 description 3
- 230000002457 bidirectional effect Effects 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 2
- 238000010586 diagram Methods 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
- 239000000725 suspension Substances 0.000 description 2
- 101001045744 Sus scrofa Hepatocyte nuclear factor 1-beta Proteins 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000036961 partial effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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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 in a vibratile manner along a first direction, the first vibration system comprises a vibration shell, and the vibration shell is provided with two first avoidance holes along a second direction; the two first elastic sheets are respectively connected to two sides of the vibration shell along the first direction and are respectively connected with the shell; when the vibration 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 sheet penetrates through one first avoidance hole, and two ends of each second elastic sheet 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 present invention relates to electronic devices, and particularly to a vibration motor.
Background
With the development of technology, various electronic devices are used in the work and life of people. Electromagnetic vibration exciters are increasingly used as a core element of consumer electronic tactile feedback. The method simplifies the production process of the product, reduces the cost and improves the reliability at the same time, and is an important way for realizing product optimization. In the related art, the double-frequency bidirectional vibration exciter is complex in process.
Disclosure of Invention
The invention mainly aims to provide a vibration motor, aiming at simplifying the assembly process of the vibration motor.
To achieve the above object, the present invention proposes a vibration motor having a first direction and a second direction intersecting, the vibration motor comprising:
a housing;
the first vibration system is arranged in the shell in a vibratile manner along the first direction, the first vibration system comprises a vibration shell, and the vibration shell is provided with two first avoidance holes along the second direction;
the two first elastic pieces are respectively connected to two sides of the vibration shell along the first direction and are respectively connected with the shell; when the vibration shell is in a static state, the first elastic sheet is in a plane shape;
a second vibration system vibratably mounted in the vibration housing in the second direction; and
and each second elastic sheet penetrates through one first avoidance 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, the main housing penetrates 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, facing the cover plate, of the vibration shell and is connected with the main shell; the second elastic sheet is connected with the main shell.
In an embodiment of the present invention, a bending portion is disposed on a peripheral edge of the main casing, and the bending portion extends toward the inside of the casing; the first elastic piece is connected to the bending part.
In an embodiment of the present invention, the vibration shell is made of a magnetic conductive material;
the first vibration system also comprises two magnetic groups, and the two magnetic groups are arranged in the vibration shell and are respectively fixed at the 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; and two ends of the iron core are respectively arranged corresponding to the two magnetic groups.
In an embodiment of the present 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; one sides of the two cover plates facing the shell are respectively provided with a first anti-collision piece, and the first anti-collision pieces penetrate 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 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; the periphery of one end of each vibration shell body facing to the other vibration shell body is provided with a positioning boss, and the positioning bosses extend towards the direction of the main shell; the positioning bosses on each vibration shell body are in one-to-one correspondence with and connected with the positioning bosses on the other vibration shell body.
In an embodiment of the invention, the frame is rectangular and has a through hole penetrating along a length direction of the iron core, and the coil and the iron core are disposed in the through hole.
In an embodiment of the invention, the two magnetic groups include two magnets, the two magnets of each magnetic group are oppositely arranged 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 invention, the vibration motor further includes a flexible circuit board, the flexible circuit board includes a fixing portion connected and fixed with the housing, a stretching portion connected with the fixing portion, and a connecting portion connected with one end of the stretching portion far away from the fixing portion, and the connecting portion is connected and fixed with the frame.
In an embodiment of the present invention, the first vibration system further includes two spacers, and the two spacers are respectively fixed on the inner end surfaces of the two ends of the vibration shell; the two magnetic groups 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 and the second direction are intersected, so that the purpose of obtaining two sets of vibration systems in a single vibration motor is achieved. Wherein, first vibration system is through two first shell fragments suspension in the casing, and the second vibration system is through two second shell fragments suspension in the shell that shakes, through set up the first hole of dodging shaking the shell, can dodge the space for the second shell fragment provides to realize the purpose that second vibration system and casing are connected to the second shell fragment, can not mutual interference when in order to ensure first vibration system and second vibration system vibration separately. When the first vibration system vibrates, the first vibration system corresponds to a vibrator, and in this case, the second vibration system corresponds to a stator. When the second vibration system vibrates, the second vibration system corresponds to a vibrator, and in this case, the first vibration system corresponds to a stator. In the invention, two sets of vibration systems can be obtained in a single vibration motor, thus avoiding repeated arrangement of the vibrator and the stator, simplifying the structural design, reducing the mass and reducing the volume. In addition, when the vibration shell does not vibrate, the first elastic sheets are planar, and thus, a reserved space can be formed between the two first elastic sheets and the shell 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 sheets to play a role in protection, 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 is reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is an exploded view of a vibration motor according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a first vibration system in an embodiment of the vibration motor of the present invention;
fig. 3 is a schematic structural diagram of a second vibration system in an embodiment of the vibration motor of the present invention;
fig. 4 is a schematic view showing the assembly of the first vibration system and the second vibration system in one embodiment of the vibration motor of the present invention;
FIG. 5 is a schematic structural view of a vibration motor according to an embodiment of the present invention with a main housing and a second resilient piece removed;
fig. 6 is a partial structural view at another angle of fig. 5.
The reference numbers indicate:
| reference numerals | Name (R) | Reference numerals | Name (R) |
| 100 | Shell body | 111 | A |
| 110 | |
200 | |
| 120 | |
210 | Vibrating |
| 210a | Second avoiding |
210b | |
| 211 | |
212 | |
| 220 | |
221 | |
| 230 | |
300 | |
| 310 | |
320 | |
| 330 | |
||
| 410 | |
420 | Second |
| 500 | First |
500a | |
| 600 | Second |
700 | |
| 710 | Fixing |
720 | Stretching |
| 730 | Connecting part |
The implementation, functional features and advantages of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used for explaining the relative position relationship between the components, the motion situation, and the like under a certain posture (as shown in the drawing), and if the certain posture is changed, the directional indications are changed accordingly.
In addition, if there is a description of "first", "second", etc. in an embodiment 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 relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" appearing throughout is to include three juxtapositions, exemplified by "A and/or B," including either the A or B arrangement, or both A and B satisfied arrangement. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
The invention provides a vibration motor which can be applied to an electronic device, wherein the electronic device can be a mobile phone, a tablet personal computer, a handheld game machine, a handheld multimedia entertainment device and other products.
In an embodiment of the present invention, as shown in fig. 1, fig. 2, fig. 3, fig. 4, and fig. 5, the vibration motor has a first direction and a second direction which intersect with each other, 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 shell 210, and the vibration shell 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 with the shell 100; when the vibration shell 210 is in a static state, the first elastic sheet 500 is in a plane shape; the second vibration system 300 is vibratably mounted in the vibration housing 210 in the second direction; each of the second resilient pieces 600 is inserted into one of the first avoiding holes 210b, and two ends of each of the second resilient pieces 600 are connected to the second vibration system 300 and the side wall of the housing 100, respectively.
The vibration motor has a width direction, a length direction, and a height direction. As shown in the drawing, the left-right direction is represented as a length direction of the vibration motor; the vertical direction is the height direction of the vibration motor; the front-rear direction is represented as a 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-back direction. In the above-described embodiments and the following embodiments, the first direction is mainly used as the up-down direction, and the second direction is mainly used as the front-back direction.
Thus, the two first elastic pieces 500 cooperate to suspend the first vibration system 200 in the vibration shell 210, so that whether the first vibration system 200 moves upwards or downwards, the corresponding first elastic pieces 500 can provide elastic force to the first vibration system 200, and the first vibration system 200 can vibrate continuously. When the first vibration system 200 vibrates along the first direction, the first elastic sheet 500 is elastically deformed under the acting force between the first vibration system 200 and the bending part 111, so as to provide the first vibration system 200 with an elastic force for linear guiding and returning to the equilibrium position, so that the first vibration system 200 can continuously vibrate.
The two second elastic pieces 600 are matched to suspend the second vibration system 300 in the vibration shell 210, so that the second vibration system 300 can move forwards or backwards, and the corresponding second elastic pieces 600 can provide elastic acting 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 housing 100, so as to provide the second vibration system 300 with an elastic force for linearly guiding and returning to the equilibrium position, so that the second vibration system 300 can continuously vibrate.
In this embodiment, two ends of the second elastic sheet 600 are respectively connected to the second vibration system 300 and the main shell 110, and there is no direct connection relationship with the first vibration system 200, that is, when the second vibration system 300 vibrates, the first vibration system 200 is not driven to vibrate, so that when the second vibration system 300 is used as a vibrator, the first vibration system 200 can be used as a stator. Similarly, when the first vibration system 200 vibrates, the second vibration system 300 is not driven to vibrate, so that when the first vibration system 200 is used as a vibrator, the second vibration system 300 can be used as a stator. In the invention, two sets of vibration systems can be obtained in a single vibration motor, thereby avoiding repeated arrangement of the vibrator and the stator, simplifying the structural design, reducing the mass and reducing the volume.
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 and the second direction intersect, so as to achieve the purpose of obtaining two sets of vibration systems in a single vibration motor. The first vibration system 200 is suspended in the casing 100 through the two first elastic sheets 500, the second vibration system 300 is suspended in the vibration shell 210 through the two second elastic sheets 600, and the first avoidance hole 210b is formed in the vibration shell 210, so that an avoidance space can be provided for the second elastic sheet 600, the purpose that the second elastic sheet 600 is connected with the second vibration system 300 and the casing 100 is achieved, and mutual interference cannot occur when the first vibration system 200 and the second vibration system 300 vibrate respectively. In addition, in the present invention, when the vibration shell 210 does not vibrate, the first elastic sheet 500 is planar, and thus, a reserved space can be formed between the two first elastic sheets 500 and the shell 100 in the first direction, so that when the vibration motor falls, the impact force can be prevented from being directly transmitted through the first elastic sheets 500 to play a role in protection, and on the other hand, an anti-collision component can be further disposed 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, wherein the main housing 110 penetrates in the first direction to form two first openings; the two cover plates 120 respectively cover the two first openings of the main shell 110; the first elastic sheet 500 is connected to one side of the vibration shell 210 facing the cover plate 120 and connected to the main shell 110; the second elastic piece 600 is connected to the main housing 110.
It can be understood that, when the vibration motor is assembled, after the first vibration system 200, the second vibration system 300, the second elastic piece 600 and the first elastic piece 500 are installed in the main housing 110, the two cover plates 120 cover the two first openings of the main housing 110, and the assembly is simple and fast.
As for the connection and fixation of the cover plate 120 and the main housing 110, various connection methods may be used. For example, the cover plate 120 and the main case 110 are fixed by welding; for another example, the cover plate 120 and the main shell 110 are provided with a snap structure that is engaged with each other, so that the cover plate 120 and the main shell 110 are connected and fixed through the snap structure; for another example, the cover plate 120 may be adhesively fixed to the main housing 110 by using an adhesive material. Of course, in other embodiments, the shell cover plate 120 and the main shell 110 may be fixed by screws. The design can be reasonably designed according to actual production requirements, and no limitation is set herein.
In an embodiment of the present invention, as shown in fig. 1, a bent portion 111 is disposed on a periphery of the main casing 110, and the bent portion 111 extends toward the inside of the casing 100; the first resilient tab 500 is connected to the bending portion 111.
It is understood that the bent portion 111 extending toward the inside of the housing 100 is disposed at the periphery of the main shell 110, and may provide a location for mounting the first resilient tab 500. The bending portion 111 extends toward the inside of the housing 100 to be disposed near the vibration shell 210, so that the first elastic piece 500 can be a flat elastic piece, and a sufficient reserved space can be reserved by using the flat elastic piece. The first resilient sheet 500 is connected to the main housing 110, which simplifies the assembly process compared to the connection of the first resilient sheet 500 to 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 part 111, the connecting piece is arranged to play a role in fixing and connecting, and also play a role in positioning, so that the assembling efficiency is improved.
In an embodiment of the present invention, as shown in fig. 1 to 6, the vibration shell 210 is made of a magnetic conductive material;
the first vibration system 200 further includes two magnetic groups 220, and the two magnetic groups 220 are both disposed in the vibration shell 210 and respectively fixed at two ends of the vibration shell 210;
the second vibration system 300 includes a frame 310 disposed in the vibration shell 210, a core 320 mounted in the frame 310, and a coil 330 sleeved on the core 320; two ends of the iron core 320 are respectively arranged corresponding to the two magnetic groups 220.
In this embodiment, one of the second resilient pieces 600 is connected to one end of the frame 310, and the other end thereof is tilted away from the second vibration system 300 and connected to the main housing 110; the other second elastic piece 600 is connected to the other end of the frame 310, and the other end of the second elastic piece is tilted away from the second vibration system 300 and connected to the main housing 110.
The vibration shell 210 and the frame 310 may be made of a magnetic conductive material for shielding magnetic lines of force and avoiding mutual interference, and may also make the magnetic lines of force generated by the coil 330 and the iron core 320 more concentrated to promote the interaction force with the magnetic group 220, and the vibration shell 210 and the frame 310 may also be made of other materials.
It is understood that when the coil 330 is charged, the magnetic group 220 of the first vibration system 200 and the iron core 320 of the second vibration system 300 generate an interaction force. When the frequency of the input current is the same as or close to the natural frequency of the first vibration system 200, the first vibration system 200 resonates, generating a vibration excitation in a first direction. The magnetic assembly 220 is disposed in the vibration shell 210 and connected to the vibration shell 210, and when the magnetic assembly 220 receives the acting force of the iron core 320, the magnetic assembly 220 vibrates along a first direction, that is, the first vibration system 200 is equivalent to a vibrator, and at this time, the second vibration system 300 is equivalent to a stator. When the frequency of the input current is the same as or close 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 in this case, the first vibration system 200 corresponds to a stator. In the invention, two sets of vibration systems can be obtained by utilizing two principles of the moving coil and the moving magnet in a single vibration motor, thereby avoiding repeated arrangement of the vibrator and the stator, simplifying the structural design, reducing the mass and reducing the volume.
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 oppositely disposed along a diagonal direction crossing the first direction and the second direction, and magnetizing directions of the two magnets 221 are opposite. For example, taking one of the magnetic groups 220 as an example, each magnet 221 of the magnetic group 220 has a first side extending along a first direction, a second side connected to the first side and extending along a second direction, and a diagonal side connecting the first side and the second side; the two magnets 221 of the magnetic set 220 are arranged opposite to each other at diagonal edges. The two magnets 221 may be formed by dividing a magnet along a diagonal line, or by magnetizing two magnets respectively.
The principle of the vibration motor to realize bidirectional vibration is 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 at opposite angles (° angle); at this time, the magnet located on the upper side of one of the magnet groups 220 serves as the N pole, and the magnet located on the lower side serves as the S pole; the magnet on the upper side of the other one of the magnet groups 220 is used as the S pole, and the magnet on the lower side is used as the N pole; the two magnetic groups 220 generate interaction force with the iron core 320, and the interaction force has component forces along the first direction and the second direction. 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 entire first vibration system 200 repeatedly vibrates in the first direction, so that the vibration motor generates a vibration sense in the first direction. If the working frequency of the vibration motor input is consistent with the vibration frequency of the second vibration system 300, the second vibration system 300 vibrates repeatedly in the second direction, so that the vibration motor generates a vibration sense 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 move relatively to each other, resulting in collision, the stability of the first vibration system 200 is higher than that of the second vibration system 300, even if the vibration shell 210 of the first vibration system 200 collides with the housing 100, the iron core 320 and the magnetic assembly 220 are not affected, and if the second vibration system 300 collides with the first vibration system 200, the iron core 320 or the magnetic assembly 220 is adversely affected, so that the normal function of the vibration motor is affected, and therefore, anti-collision protection needs to be designed for the iron core 320 and the magnetic assembly 220.
In an embodiment of the present invention, as shown in fig. 1, fig. 2, fig. 4 and fig. 5, the vibration shell 210 is provided with two second avoidance holes 210a along the first direction, and the first elastic sheet 500 is provided with a third avoidance hole 500a correspondingly communicated with the second avoidance holes 210 a; two one sides of the cover plate 120 facing the inside of the housing 100 are respectively provided with a first anti-collision member 410, and the first anti-collision member 410 is arranged through the third avoidance hole 500a and the second avoidance hole 210 a.
It can be understood that, when the first anti-collision members 410 are respectively disposed on two sides of the cover plates 120 facing the inside of the housing 100, and the first anti-collision members 410 are disposed through the third avoidance hole 500a and the second avoidance hole 210a 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 prevent the second vibration system 300 from colliding with the first vibration system 200, thereby improving the reliability of the vibration motor when the vibration motor falls.
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 magnet assembly 220 facing the iron core 320.
It can be understood 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 colliding with the magnetic assembly 220 to cause damage, and improve the reliability of the vibration motor when the vibration motor falls.
In this embodiment, the first and second anti-collision members 410 and 420 are provided at the same time, and the first and second anti-collision members 410 and 420 can play a role of buffering in the up-down direction and the left-right direction, thereby preventing the second vibration system 300 from colliding with the first vibration system 200. The reliability of the vibration motor when it falls can be improved.
In an embodiment of the present invention, as shown in fig. 1 and fig. 2, the vibration shell 210 includes two vibration shell bodies 211, and each vibration shell body 211 is provided with the second avoidance hole 210 a; the two vibrating shell bodies 211 are arranged oppositely; a positioning boss 212 is arranged on the periphery of one end of each vibration shell body 211 facing to the other vibration shell body 211, and the positioning boss 212 extends towards the main shell 110; the positioning bosses 212 on each of the vibration shell bodies 211 are connected with the positioning bosses 212 on the other vibration shell body 211 in a one-to-one correspondence manner.
It will be appreciated that the second vibration system 300 may be facilitated to fit within the vibration housing 210 by the two vibration housing bodies 211 cooperating to form the vibration housing 210. 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 can be understood that the frame 310 designed as above can wrap 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 (abbreviated as FPCB) is usually disposed in the vibration motor, and after the Flexible Circuit Board 700 is fixed in the casing 100 of the vibration motor, a plastic bracket needs to be additionally disposed on the iron core 320, and then the Flexible Circuit Board 700 and the plastic bracket on the iron core 320 are connected and fixed. Thus, the number of parts of the vibration motor is increased, which increases 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 to the housing 100, a stretching portion 720 connected to the fixing portion 710, and a connecting portion 730 connected to an end of the stretching portion 720 far from the fixing portion 710, and the connecting portion 730 is connected and fixed to the frame 310.
It is understood that, when the flexible circuit board 700 is mounted, the fixing portion 710 of the flexible circuit board 700 is connected and fixed with the housing 100, and the extending portion 720 of the flexible circuit board 700 extends from the fixing portion 710 toward the second vibration system 300, so that the connecting portion 730 connected to one end of the extending portion 720 far from the fixing portion 710 can be directly connected and fixed with the frame 310. The extending portion 720 has better flexibility, so that the extending portion 720 of the flexible circuit board 700 can be bent or stretched more naturally to extend when the vibration motor vibrates or falls, so that the flexible circuit board 700 is not easy to be pulled apart, 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 may be directly connected and fixed without disposing a plastic bracket on the iron core 320, and the stability of the flexible circuit board 700 may also be ensured.
In this embodiment, the flexible circuit board 700 may be connected to the surface of the frame 310 by bonding, and the frame 310 functions as a support, so that a dedicated support is not required, the bonding area is large, and the process is simplified; the flexible circuit board 700 is located at one side of the vibration space of the second vibration system 300, and compared with the flexible circuit board 700 adhered to the iron core 320, the flexible circuit board 700 and the second vibration system 300 can be prevented from interfering when vibrating.
In order to facilitate fixing the magnetic assembly 220 according to any of the above embodiments, as shown in fig. 1, fig. 2, fig. 4 and fig. 6, the first vibration system 200 further includes two spacers 230, and the two spacers 230 are respectively fixed on the inner end surfaces of the two ends of the vibration shell 210; the two magnet groups 220 are respectively mounted on the two spacers 230.
The above description is only an alternative embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A vibratory motor having a first direction and a second direction that intersect, the vibratory motor comprising:
a housing;
the first vibration system is arranged in the shell in a vibratile manner along the first direction, and comprises a vibration shell which is provided with two first avoidance holes along the second direction;
the two first elastic pieces are respectively connected to two sides of the vibration shell along the first direction and are respectively connected with the shell; when the vibration shell is in a static state, the first elastic sheet is in a plane shape;
a second vibration system vibratably mounted in the vibration housing in the second direction; and
and each second elastic sheet penetrates through one first avoidance hole, and two ends of each second elastic sheet are respectively connected with the second vibration system and the side wall of the shell.
2. A vibration motor according to claim 1, wherein said housing includes a main case and two cover plates, said main case penetrating in said 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, facing the cover plate, of the vibration shell and is connected with the main shell; the second elastic sheet is connected with the main shell.
3. A vibration motor as claimed in claim 2, wherein a bent portion is provided at a periphery of said main housing, said bent portion extending toward an inside of said housing; the first elastic piece is connected to the bending part.
4. A vibratory motor as set forth in claim 2 wherein said vibrator housing is formed of a magnetically conductive material;
the first vibration system also comprises two magnetic groups, and the two magnetic groups are arranged in the vibration shell and are respectively fixed at the 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; and two ends of the iron core are respectively arranged corresponding to the two magnetic groups.
5. A vibration motor as claimed in claim 4, wherein the vibration housing is provided with two second avoidance holes along the first direction, and the first resilient plate is provided with a third avoidance hole correspondingly communicated with the second avoidance holes; one sides of the two cover plates facing the shell are respectively provided with a first anti-collision piece, and the first anti-collision pieces penetrate 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.
6. A vibration motor as claimed in claim 5, wherein said vibration shell comprises two vibration shell bodies, each of said vibration shell bodies being provided with said second avoidance hole; the two vibrating shell bodies are oppositely arranged; the periphery of one end of each vibration shell body facing to the other vibration shell body is provided with a positioning boss, and the positioning bosses extend towards the direction of the main shell; the positioning bosses on each vibration shell body are in one-to-one correspondence with and connected with the positioning bosses on the other vibration shell body.
7. A vibration motor according to claim 4, wherein said frame has a rectangular shape and has a through hole penetrating in a longitudinal direction of said core, and said coil and said core are provided in said through hole.
8. A vibration motor as claimed in claim 4, wherein said two magnetic groups comprise two magnets, the two magnets of each of said magnetic groups are oppositely disposed in a diagonal direction of said first direction and said second direction, and the magnetizing directions of said two magnets are opposite.
9. A vibration motor as claimed in any one of claims 4 to 8, further comprising a flexible circuit board including a fixing portion fixedly connected to said housing, a stretching portion connected to said fixing portion, and a connecting portion connected to an end of said stretching portion remote from said fixing portion, said connecting portion being fixedly connected to said frame.
10. A vibration motor according to any one of claims 4 to 8, wherein said first vibration system further comprises two spacers fixed to inner end faces of both ends of said vibration housing, respectively; the two magnetic groups are respectively arranged on the two gaskets.
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| CN202111683051.5A CN114567104B (en) | 2021-12-31 | 2021-12-31 | Vibration motor |
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| CN202111683051.5A CN114567104B (en) | 2021-12-31 | 2021-12-31 | Vibration motor |
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