CN206908497U - Electromagnetic driver - Google Patents

Abstract

The utility model discloses a kind of electromagnetic driver.The electromagnetic driver includes：Stator module, stator module include coil and fixed part, and coil is connected with fixed part；Vibrator component, vibrator component include framework, counterweight part and permanent magnet, and counterweight part and permanent magnet are arranged in framework, and coil is located in the magnetic field of permanent magnet；And flexible member, one end of flexible member are connected with fixed part, the other end is connected with framework, and vibrator component is suspended on fixed part, and flexible member is configured to provide elastic-restoring force for vibrator component.The flexible member of the electromagnetic driver and the framework of vibrator component connect.So, flexible member and the link position of vibrator component are not limited by the set location of mass.

Description

Electromagnetic driver

Technical field

Vibrating device technical field is the utility model is related to, more particularly, to a kind of electromagnetic driver.

Background technology

With the development of the communication technology, portable type electronic product, such as mobile phone, handheld device or palm multimedia recreation Equipment etc. enters the life of people.In these portable type electronic products, typically system feedback can be done with vibrating motor. For example, vibrational feedback of the incoming call prompting of mobile phone, game machine etc..However, with the lightening development trend of electronic product, in it The various components (including vibrating motor) in portion also need to adapt to this trend.

In the prior art, Z-direction vibrating motor typically all includes vibrator component, shell fragment and the stator pack being contained in housing Part.Generally vibrator component includes mass, magnet, and stator module includes coil, FPCB.Oscillator system is hanged by shell fragment Put in housing.

Shell fragment is welded to connect with mass.The position of shell fragment is influenceed by mass position, therefore the inside of electromagnetic driver Arrangement space is restricted.

Utility model content

A purpose of the present utility model is to provide a kind of new solution of electromagnetic driver.

According to first aspect of the present utility model, there is provided a kind of electromagnetic driver.The electromagnetic driver includes：Stator pack Part, the stator module include coil and fixed part, and the coil is connected with the fixed part；Vibrator component, the oscillator group Part includes framework, counterweight part and permanent magnet, and the counterweight part and the permanent magnet are arranged in the framework, the coil position In the magnetic field of the permanent magnet；And flexible member, one end of the flexible member are connected with the fixed part, the other end with The framework connection, the vibrator component are suspended on the fixed part, and the flexible member is configured to shake to be described Sub-component provides elastic-restoring force.

Alternatively, the coil is axially perpendicular to direction of vibration, and the magnetizing direction of the permanent magnet is parallel to vibration side To.

Alternatively, the counterweight part and the permanent magnet are 2, and the framework includes the first center and the second center, First center and second center are connected with each other, to form avoiding space at middle part, first center and described the Two centers are penetrated with the avoiding space, and the coil is inserted in the avoiding space；A quilt in 2 permanent magnets It is arranged in first center, another is arranged in second center；One in 2 counterweight parts is set In first center, another is arranged in second center.

Alternatively, the avoidance for avoiding the flexible member is provided with first center and second center Groove.

Alternatively, the permanent magnet is between the counterweight part and the coil.

Alternatively, the flexible member is shell fragment.

Alternatively, the shell fragment is multiple, multiple shell fragments be uniformly distributed in the framework along direction of vibration Above and below.

Alternatively, the shell fragment and the fixed part are integrally formed.

Alternatively, the fixed part includes roof, bottom wall and side wall, and the roof, the bottom wall and the side wall enclose Together, to be internally formed receiving space at them, the coil, the vibrator component and the shell fragment are respectively positioned on the receiving In space, the coil is arranged on the bottom wall, and multiple shell fragments are separately positioned on the roof and the bottom wall On.

Alternatively, the fixed part includes upper casing and lower casing, and the lower casing includes one of the bottom wall and the side wall Point, the upper casing includes another part of the roof and the side wall, the side wall positioned at the part of the upper casing and position There is identical structure and/or complementation in the part of the lower casing, so that the upper casing and the lower casing snap together.

Alternatively, the framework is made by permeability magnetic material.

Inventor of the present utility model has found that in the prior art, shell fragment is welded to connect with mass.The position of shell fragment by The influence of mass position, therefore the inside arrangement space of electromagnetic driver is restricted.Therefore, the utility model to be realized Technical assignment either technical problem to be solved be it is that those skilled in the art never expect or it is not expected that, therefore this Utility model is a kind of new technical scheme.

In the utility model embodiment, vibrator component includes framework.Counterweight part and permanent magnet be set in the frame, with Form integrative-structure.Flexible member and the framework of vibrator component connect.In this way, the company of flexible member and vibrator component Connect position not limited by the set location of mass, so as to reduce the assembly difficulty of electromagnetic driver.

In addition, by the setting of framework, vibrator component forms integrative-structure.The globality of so vibrator component is good, energy Bigger driving force is enough born, this enables electromagnetic driver to provide more preferable vibration sense experience.

In addition, by the setting of framework, vibrator component forms integrative-structure.Relative to what permanent magnet and counterweight part were bonded Mode, when electromagnetic driver falls or is collided, vibrator component is not susceptible to disintegrate the structure so that electromagnetic driver Reliability and the life-span improve.

In addition, according to one embodiment of the present utility model, due to being connected by framework with shell fragment, therefore shell fragment can be set In the upper and lower along direction of vibration of framework, the generation of polarization can be reduced in this way.

It is of the present utility model other by referring to the drawings to the detailed description of exemplary embodiment of the present utility model Feature and its advantage will be made apparent from.

Brief description of the drawings

It is combined in the description and the accompanying drawing of a part for constitution instruction shows embodiment of the present utility model, and And it is used to explain principle of the present utility model together with its explanation.

Fig. 1 is the exploded view according to the electromagnetic driver of the utility model one embodiment.

Fig. 2 is the sectional view according to the electromagnetic driver of the utility model one embodiment.

Fig. 3 is the installation diagram according to two centers of the utility model one embodiment, permanent magnet and coil.

Fig. 4 is the schematic diagram according to the electromagnetic driver of the utility model one embodiment.

Fig. 5 is the structural representation according to the center of the utility model one embodiment.

Fig. 6 is the structural representation of the upper casing or lower casing according to the utility model one embodiment.

Fig. 7 is the structural representation of another angle of Fig. 6.

Description of reference numerals：

11：Upper casing；12：First center；13：Second center；14：Protrusive board；15：Permanent magnet；16：Counterweight part；17：Coil； 18：Iron core；19：FPCB；20：Shell fragment；22：Weld part；23：Escape groove；24：Connecting plate；25：Groove；26：Lower casing；27：Bottom Wall；28：Roof.

Embodiment

Various exemplary embodiments of the present utility model are described in detail now with reference to accompanying drawing.It should be noted that：It is unless another Illustrate outside, the part and the positioned opposite of step, numerical expression and numerical value otherwise illustrated in these embodiments is unlimited The scope of the utility model processed.

The description only actually at least one exemplary embodiment is illustrative to be never used as to this practicality below New and its application or any restrictions used.

It may be not discussed in detail for technology, method and apparatus known to person of ordinary skill in the relevant, but suitable In the case of, the technology, method and apparatus should be considered as part for specification.

In shown here and discussion all examples, any occurrence should be construed as merely exemplary, without It is as limitation.Therefore, other examples of exemplary embodiment can have different values.

It should be noted that：Similar label and letter represents similar terms in following accompanying drawing, therefore, once a certain Xiang Yi It is defined, then it need not be further discussed in subsequent accompanying drawing in individual accompanying drawing.

Fig. 1 is the exploded view according to the electromagnetic driver of the utility model one embodiment.Fig. 2 is according to the utility model The sectional view of the electromagnetic driver of one embodiment.

According to one embodiment of the present utility model, there is provided a kind of electromagnetic driver.As illustrated in fig. 1 and 2, it is for example, electric Magnetic driven device is used in the electronic equipments such as mobile phone, tablet personal computer, intelligent watch, VR products, AR products, intercom, game machine.

The electromagnetic driver includes：Stator module, vibrator component and flexible member.Stator module includes coil 17 and fixed Portion.Coil 17 is connected with fixed part.For example, coil 17 is adhered to by fixed part using binding agent.Coil 17 and external circuit electricity Connection.For example, being electrically connected by FPCB19 with external circuit, this make it that the transmission of vibration signal is more accurate.Can also be, coil 17 lead directly electrically connects with external circuit.

Preferably, iron core 18 is additionally provided with coil 17.As shown in figure 4, coil 17 is set around iron core 18, iron core 18 are made by permeability magnetic material.Iron core 18 can close the magnetic induction line of permanent magnet 15, prevent that magnetic field is excessive, so as to improve permanent magnetism The magnetic induction of body 15.

Fixed part, which is used to form vibrator component, to be supported, and is set for the vibration of electromagnetic driver to be delivered into outside It is standby.For example, fixed part is sheet, the supporting structure with bottom or housing etc..For convenience of explanation, it is real in the utility model Apply in example, fixed part is housing.

Vibrator component includes framework, counterweight part 16 and permanent magnet 15.Counterweight part 16 and permanent magnet 15 are arranged in framework, To form integrative-structure.Framework is used to accommodate counterweight part 16 and permanent magnet 15, to form integrative-structure, and for first with elasticity Part connects.

Specifically, coil 17 is located in the magnetic field of permanent magnet 15.Permanent magnet 15 is used to provide magnetic field.Optionally, permanent magnetism Body 15 is ferrite lattice or ndfeb magnet.The coil 17 of energization is acted in magnetic field by Ampere force.And permanent magnet 15 can be acted on by the reaction force of the Ampere force from coil 17.Ampere force is the driving force of vibrator component vibration.

Counterweight part 16 is used for the inertia for increasing vibrator component vibration.For example, counterweight part 16 is made by wolfram steel.Counterweight part 16 can reduce the F of electromagnetic driver_o(lowest vibration frequency).The inside of framework has receiving space, permanent magnet 15 and counterweight Portion 16 is arranged in receiving space.Optionally, framework is formed by metal, plastics or ceramic making.Framework can be by Sheet material is enclosed to be formed or be processed by wire rod and formed.

One end of flexible member is connected with fixed part, and the other end is connected with framework.Flexible member is configured to shake Sub-component provides elastic-restoring force.For example, flexible member includes at least one of spring, shell fragment 20 or elastic rubber. For convenience of explanation, in the present embodiment, flexible member is shell fragment 20.Shell fragment 20 has the characteristics of frivolous, to be easily worked.

Optionally, one end of shell fragment 20 is linked together by way of welding or being bonded with framework.Vibrator component It is suspended on fixed part.

In the utility model embodiment, vibrator component includes framework.Counterweight part 16 and permanent magnet 15 are arranged on framework In, to form integrative-structure.Flexible member and the framework of vibrator component connect.In this way, flexible member and oscillator group The link position of part is not limited by the set location of mass, so as to reduce the assembly difficulty of electromagnetic driver.

In addition, by the setting of framework, vibrator component forms integrative-structure.The globality of so vibrator component is good, energy Bigger driving force is enough born, this enables electromagnetic driver to provide more preferable vibration sense experience.

In addition, by the setting of framework, vibrator component forms integrative-structure.Glued relative to by permanent magnet 15 and counterweight part 16 The mode connect, when electromagnetic driver falls or is collided, vibrator component is not susceptible to disintegrate the structure so that electromagnetism drives The reliability of dynamic device and life-span improve.

In addition, according to one embodiment of the present utility model, due to being connected by framework with shell fragment 20, therefore shell fragment 20 can The upper and lower along direction of vibration of framework is arranged on, the generation of polarization can be reduced in this way.

In one example, as shown in Fig. 2 fixed part includes roof 28, bottom wall 27 and side wall.Side wall is located at the He of roof 28 Between bottom wall 27.Together with roof 28, bottom wall 27 enclose with side wall, to be internally formed receiving space at them.For example, roof 28 Direction of vibration is each perpendicular to bottom wall 27.Direction of vibration is the direction of vibrator component vibration.Coil 17, vibrator component and shell fragment 20 It is respectively positioned in receiving space.FPCB19 and coil 17 are arranged on bottom wall 27.Shell fragment 20 is multiple, and is separately positioned on On roof 28 and bottom wall 27.The embodiment of multiple shell fragments 20 will be described in detail below.

Preferably, as shown in fig. 6-7, fixed part includes upper casing 11 and lower casing 26.Lower casing 26 includes bottom wall 27 and side wall A part.Upper casing 11 includes roof 28 and another part of side wall.Side wall positioned at the part of upper casing 11 with positioned at lower casing 26 Part there is identical structure and/or complementation so that upper casing 11 and lower casing 26 snap together.In this way, housing Assembling be easier.

It should be noted that upper casing 11 is identical and/or complementary with the structure of the side wall for being used to connect of lower casing 26, so just In upper casing 11, lower casing 26 junction sealing.

Preferably, upper casing 11 is identical with the structure of lower casing 26.For example, as shown in Figures 6 and 7, upper casing 11 and lower casing 26 are equal For the structure of approximate cuboid.Protrusive board 14 is being provided with the side wall of upper casing 11 or lower casing 26.Relative with protrusive board 14 Side wall on set fluted 25.The shape of groove 25 and protrusive board 14 matches.When fastening, protrusive board 14 is inserted in groove 25, To form engagement.Then by the seam welds of upper casing 11 and lower casing 26 to together, to form the housing of electromagnetic driver.

Upper casing 11 is identical with the structure of lower casing 26 so that the processing of housing and the assembling of housing become easy.For example, Upper casing 11 or lower casing 26 are formed using stamping forming mode.

In one example, coil 17 is axially perpendicular to direction of vibration.The magnetizing direction of permanent magnet 15 is parallel to vibration Direction.For example, as shown in Figures 2 and 3, the thickness direction of vibrator component is parallel to direction of vibration.Permanent magnet 15 is located at coil 17 Sidepiece.In this way, coil 17 is not take up the space of thickness direction so that electromagnetic driver can be done thinner.So The development trend that electronic equipment is lightening, minimizes is complied with.

In one example, counterweight part 16 and permanent magnet 15 are 2.Framework includes the first center 12 and the second center 13.First center 12 and the second center 13 are connected with each other, to form avoiding space at middle part.First center 12 and the second center 13 Penetrated with avoiding space, in order to which the magnetic field of permanent magnet 15 passes through.

First center 12 and the second center 13 are used to accommodate counterweight part 16 and permanent magnet 15.In assembling, coil 17 inserts In avoiding space；One in 2 permanent magnets 15 is arranged in the first center 12, and another is arranged on the second center 13 In；One in 2 counterweight parts 16 is arranged in the first center 12, and another is arranged in the second center 13.

In this way, as shown in figure 4, two permanent magnets 15 by coil 17 driving force (F and F ') effect, Increase the driving force of electromagnetic driver.

In addition, permanent magnet 15 and counterweight part 16 are arranged in the both sides vertically of coil 17.So, coil 17 is to shaking The driving force of sub-component is more balanced so that the stability of vibration improves, and reduces the generation for even avoiding polarization.

Preferably, the side of the close avoiding space of the first center 12 and the second center 13 is unlimited.For example, permanent magnetism Body 15 is directly relative with the middle part (or iron core 18) of coil 17.In this way, more magnetic induction lines can be made to pass through coil 17, the magnetic induction at coil 17 is higher.

In addition, the processing of the first center 12 and the second center 13 becomes easy.It is for instance possible to use the mode of punching press is formed First center 12 and the second center 13.Two centers are provided with connecting plate 24.Two centers are connected to by connecting plate 24 Together, to form framework.

It is more preferable that the structure of two centers is identical.So the processing of center is caused to become easy.

For example, as shown in Figures 3 and 5, the first center 12 and the second center 13 are approximate cuboid, and there are 5 walls With an open end.By taking the first center 12 as an example, relative 2 being used to surround in 4 walls of open end of the first center 12 Wall protrudes from open end, to form connecting plate 24.In assembling, permanent magnet 15 and counterweight part 16 load the first center from open end In 12.Formed and kept away between other 2 walls 2 walls corresponding with the second center 13 for being used to surround open end of first center 12 Allow space.

In assembling, counterweight part 16 and permanent magnet 15 are put into two centers first；Then, opening wide two centers End is relative, and the connecting plate 24 of two centers is welded together by way of welding.

Preferably, framework is made by permeability magnetic material.For example, optionally pure iron, silicon steel, perm close permeability magnetic material Gold, SPCC etc..First center 12 and the second center 13 are made by permeability magnetic material.

In this way, framework can gather the magnetic induction line of permanent magnet 15, prevent that magnetic induction line is excessive, close more magnetic Feel line, improve the magnetic induction of permanent magnet 15, this causes the driving force increase that vibrator component is vibrated, and vibration sensitivity carries It is high.

In one example, permanent magnet 15 is between counterweight part 16 and coil 17.Permanent magnet 15 close to coil 17 so that Magnetic induction at coil 17 is bigger.So, the driving force that vibrator component is subject to is bigger, and it is sensitive to further increase vibration Degree.

In one example, shell fragment 20 is multiple.Multiple shell fragments 20 by equably arrange framework along direction of vibration it is upper, Lower section.In this example embodiment, shell fragment 20 is arranged on the upper and lower both sides along direction of vibration of vibrator component.In this way, oscillator The elastic-restoring force that component is subject to is more balanced, can prevent the generation of polarization.

For example, shell fragment 20 is 4.One shell fragment 20 is set in the top of the first center 12, in the lower section of the first center 12 One shell fragment 20 is set.One shell fragment 20 is set in the top of the second center 13, one bullet is set in the lower section of the second center 13 Piece 20.One end of each shell fragment 20 is welded on by way of welding on a weld part 22 of center.

Preferably, it is provided with the first center 12 and the second center 13 for avoiding flexible member (for example, shell fragment 20) escape groove 23.As shown in fig. 7, the through-thickness of escape groove 23 extends internally.First center 12 and the second center 13 Upper and lower respectively sets an escape groove 23.In vibration, shell fragment 20 can be embedded in escape groove 23.

In this way, oscillation space can be saved, increases the amplitude of vibrator component.

Furthermore it is possible to avoid the stress of shell fragment 20 excessive, the reliability of vibration is improved.

In one example, shell fragment 20 is integrally formed with fixed part.In this way, shell fragment 20 and fixed part Processing is easier, and the bonding strength of the two is higher.

For example, as shown in fig. 6-7, shell fragment 20 is arranged on the roof 28 of upper casing 11 and the bottom wall 27 of lower casing 26.Upper casing 11 It is molded with lower casing 26 by metal sheet by stamping forming mode.In punching course, formed on roof 28 and bottom wall 27 Shell fragment 20.

Although some specific embodiments of the present utility model are described in detail by example, this area It is to be understood by the skilled artisans that example above merely to illustrate, rather than in order to limit the scope of the utility model.This Field it is to be understood by the skilled artisans that can not depart from the scope of the utility model and spirit in the case of, to above example Modify.The scope of the utility model is defined by the following claims.

Claims (11)

1. A kind of 1. electromagnetic driver, it is characterised in that：Including：

   Stator module, the stator module include coil (17) and fixed part, and the coil (17) is connected with the fixed part；

   Vibrator component, the vibrator component include framework, counterweight part (16) and permanent magnet (15), the counterweight part (16) and described Permanent magnet (15) is arranged in the framework, and the coil (17) is located in the magnetic field of the permanent magnet (15)；And

   Flexible member, one end of the flexible member are connected with the fixed part, and the other end is connected with the framework, the oscillator Component is suspended on the fixed part, and the flexible member is configured to provide elastic-restoring force for the vibrator component.
2. 2. electromagnetic driver according to claim 1, it is characterised in that：The coil (17) is axially perpendicular to vibration side To the magnetizing direction of the permanent magnet (15) is parallel to direction of vibration.
3. 3. electromagnetic driver according to claim 2, it is characterised in that：The counterweight part (16) and the permanent magnet (15) It it is 2, the framework includes the first center (12) and the second center (13), first center (12) and second center (13) be connected with each other, to form avoiding space at middle part, first center (12) and second center (13) with it is described Avoiding space is penetrated, and the coil (17) is inserted in the avoiding space；One in 2 permanent magnets (15) is arranged on In first center (12), another is arranged in second center (13)；One in 2 counterweight parts (16) It is arranged in first center (12), another is arranged in second center (13).
4. 4. electromagnetic driver according to claim 3, it is characterised in that：In first center (12) and described second The escape groove (23) for avoiding the flexible member is provided with frame (13).
5. 5. electromagnetic driver according to claim 3, it is characterised in that：The permanent magnet (15) is located at the counterweight part (16) between the coil (17).
6. 6. electromagnetic driver according to claim 1, it is characterised in that：The flexible member is shell fragment (20).
7. 7. electromagnetic driver according to claim 6, it is characterised in that：The shell fragment (20) is multiple, multiple bullets Piece (20) be uniformly distributed in the framework along above and below direction of vibration.
8. 8. electromagnetic driver according to claim 6, it is characterised in that：The shell fragment (20) is one with the fixed part Shaping.
9. 9. electromagnetic driver according to claim 7, it is characterised in that：The fixed part includes roof (28), bottom wall (27) and side wall, the roof (28), the bottom wall (27) and the side wall enclose together, to be internally formed receiving at them Space, the coil (17), the vibrator component and the shell fragment (20) are respectively positioned in the receiving space, the coil (17) It is arranged on the bottom wall (27), multiple shell fragments (20) are separately positioned on the roof (28) and the bottom wall (27) On.
10. 10. electromagnetic driver according to claim 9, it is characterised in that：The fixed part includes upper casing (11) and lower casing (26), the lower casing (26) includes a part for the bottom wall (27) and the side wall, and the upper casing (11) includes the roof (28) and the side wall another part, the side wall positioned at the part of the upper casing (11) with positioned at the lower casing (26) Part has identical structure and/or complementation, so that the upper casing (11) and the lower casing (26) snap together.
11. 11. electromagnetic driver according to claim 1, it is characterised in that：The framework is made by permeability magnetic material.