CN212543619U

CN212543619U - Broadband motor

Info

Publication number: CN212543619U
Application number: CN202022290463.XU
Authority: CN
Inventors: 曹洪斌; 赵玉洗; 陈娟
Original assignee: Suzhou Suoye Electronic Technology Co ltd
Current assignee: Suzhou Suoye Electronic Technology Co ltd
Priority date: 2020-10-15
Filing date: 2020-10-15
Publication date: 2021-02-12
Anticipated expiration: 2030-10-15

Abstract

The utility model relates to a broadband motor, which comprises a shell, a magnetic component, an elastic mechanism, a mass block and a connecting piece; the coil component comprises a plurality of coils, the magnetic component is arranged in the shell, and the plurality of coils surround the periphery of the connecting piece; the magnetic assembly comprises a first magnetic part, a second magnetic part, a third magnetic part, a fourth magnetic part and an internal magnetic part, the connecting part, the mass block, the first magnetic part, the second magnetic part and the internal magnetic part form a vibrator assembly, and the mass block, the first magnetic part, the second magnetic part and the internal magnetic part are connected through the connecting part. The utility model provides a magnetic field of motor oscillator subassembly and motor housing's magnetic field repel each other and reach the power balance to make the oscillator realize the suspension inside the motor, the oscillator subassembly is inside motor housing, and repulsion all exists in both ends direction, and oscillator subassembly both ends direction power is balanced, and this structure magnetic field polarity can reverse completely.

Description

Broadband motor

Technical Field

The utility model relates to a vibrating motor technical field, concretely relates to wide band motor.

Background

The vibrating motor of present electronics trade, like the vibrating motor in the cell-phone, the vibrating motor in game paddle and the VR handle generally uses rotor motor or traditional linear motor, and rotor motor vibration effect is single. Although the conventional linear motor can provide a certain vibration effect experience, the response frequency bandwidth is narrow, and the requirement of consumers on wider frequency band vibration effect is difficult to meet. Meanwhile, the traditional linear motor adopts a metal or plastic spring structure, so that the reliability risks of spring breakage, noise and the like exist, the manufacturing difficulty is high, and the cost is high.

Patent document CN207691660U discloses a linear vibration motor, which includes a housing, a stator assembly housed and fixed in the housing, a vibrator assembly, and an elastic support for supporting the vibrator assembly; the stator assembly comprises coils and a flexible circuit board, wherein the coils are respectively arranged on the inner surface of the shell corresponding to the side surfaces of the vibrator assembly; the coil is formed by a plurality of coil wires in a parallel winding mode, and the coil further comprises coil lead wires which correspond to the coil wires and are used for being electrically connected with the flexible circuit board.

Patent document CN107994751A discloses a linear vibration motor. This motor includes the vibrator subassembly, stator module and elastic element, the vibrator subassembly passes through elastic element and is connected with stator module, the vibrator subassembly receives the effect of stator module's electromagnetic force and takes place the vibration, each of two tip along the vibration direction at the vibrator subassembly is provided with magnet, magnet bonds on the vibrator subassembly or magnet is connected with the vibrator subassembly through the mode of moulding plastics, stator module is provided with magnetic element, magnetic element and magnet one-to-one, form the repulsion between magnetic element and the magnet that corresponds.

The motors provided in the above patent documents all use an elastic structure, so that the vibration amount is relatively limited, the frequency bandwidth of the vibration response is also narrow, and the reliability risks such as spring breakage and noise exist, which makes it difficult to meet the needs of consumers.

Patent document US009716423B1 discloses a haptic feedback actuator with a stop, a damper, a hammer path between the stop and the damper, a coil element fixedly mounted with respect to the hammer path; and a magnetic hammer guidingly mounted for movement along the hammer path, the magnetic hammer having two opposing ends, each of the two ends of the magnetic hammer having a corresponding permanent magnet, the two permanent magnets being of opposite polarity, the magnetic hammer being electromagnetically engageable by a magnetic field emitted when the coil element is energized so as to slide longitudinally in either of two opposite directions along the hammer path in accordance with the polarity of the energization of the coil element, the stop having an impact surface adapted to stop the magnetic hammer, and the damper being adapted to decelerate the magnetic hammer as the magnetic hammer slides longitudinally toward the damper.

The above patent documents adopt an asymmetric magnetic field single-face force balance design, emphasis is placed on feedback of the striking effect, and the magnetic hammer needs a larger movement space. Meanwhile, the single-side force balance design can not avoid the quality problems of friction between the magnetic hammer and the inner wall of the movement cavity, noise and the like, and meanwhile, the mechanical spring adopted by part of the design is relatively high in stress, so that the problem of spring fracture is easily caused.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a wide band motor, this motor can satisfy the requirement of consumer to the wide band response vibration effect, assembles vibrator subassembly and elastic mechanism into a whole simultaneously, very big reduction linear motor's the assembly process degree of difficulty and manufacturing cost.

A broadband motor comprises a shell, a magnetic assembly, an elastic mechanism, a mass block and a connecting piece; the elastic mechanism comprises a first elastic component and a second elastic component, and the mass block comprises a first mass block and a second mass block; the magnetic connector is characterized by further comprising a coil assembly, wherein the coil assembly comprises a plurality of coils, the magnetic assembly is arranged in the shell, and the plurality of coils surround the periphery of the connector; the magnetic assembly comprises a first magnetic part, a second magnetic part, a third magnetic part, a fourth magnetic part and an internal magnetic part, the connecting piece, the mass block, the first magnetic part, the second magnetic part and the internal magnetic part form a vibrator assembly, the mass block, the first magnetic part, the second magnetic part and the internal magnetic part are connected through the connecting piece, a first mass block is sleeved on the periphery of one side, away from the internal magnetic part, of the first magnetic part, a second mass block is sleeved on the periphery of one side, away from the internal magnetic part, of the second magnetic part, and a first elastic assembly is arranged at one end, away from the first magnetic part, of the first mass block; and a second elastic assembly is arranged at one end of the second mass block, which is far away from the second magnetic piece.

Preferably, the connecting piece comprises a first connecting piece, a second connecting piece and a connecting rod, and the connecting rod passes through the through holes of the first connecting piece and the second connecting piece; the connecting rod penetrates through a through hole of the internal magnetic part, the internal magnetic part is positioned between the first connecting part and the second connecting part, and the connecting rod penetrates through holes of the first magnetic part and the second magnetic part; the first connecting piece is located between the first magnetic piece and the internal magnetic piece, the second connecting piece is located between the second magnetic piece and the internal magnetic piece, and coils are sleeved on the peripheries of the first connecting piece and the second connecting piece.

Preferably, the first elastic assembly and the second elastic assembly are provided with through holes or blind holes, and the connecting rod penetrates through the through holes or blind holes of the first elastic assembly and the second elastic assembly to be connected with the vibrator assembly.

Preferably, the first mass block and the second mass block are provided with through holes, the connecting rod penetrates through the through holes of the first mass block and the second mass block, the first mass block and the second mass block are of hollow structures, the hollow structure of the first mass block is matched with the first magnetic piece, and the hollow structure of the second mass block is matched with the second magnetic piece.

Preferably, the coil support structure is sleeved on the periphery of the coil assembly and is cylindrical.

Preferably, the housing comprises a stator and an end cover, the stator is internally provided with a hollow structure, a vibrator assembly is arranged in the hollow structure, the end cover comprises a left end cover and a right end cover, and the left end cover, the right end cover and the stator form a closed space.

Preferably, the stator is an integrally arranged cylindrical structure, the left end cover is connected with the left end of the cylindrical structure, and the right end cover is connected with the right end of the cylindrical structure.

Preferably, the stator includes two half-cylinder structures, and two half-cylinder structures form the cylinder structure, and the left end lid is connected with the left end of cylinder structure, and the right-hand member lid is connected with the right-hand member of cylinder structure, and wherein left end lid, cylinder structure and right-hand member lid form the enclosure space, the third magnetic component is installed to the left end lid inboard, the fourth magnetic component is installed to the right end lid inboard.

Preferably, the first and second elastic assemblies each comprise a plurality of springs, which are superimposed by ultrasonic welding or by gluing. Wherein, the utility model provides an elastic component separates and fold together between a plurality of springs, can constitute multilayer projection on the vibration direction of motor and overlap but the spring of mutual noninterference in space, reduces the stress of every layer of spring effectively, effectively avoids the spring fracture problem, improves product reliability.

Preferably, the material of the spring is plastic.

The cost is taken as the optimization direction, an optimized structure exists, the shell is made into an integral cylindrical structure, the coil is directly wound on the shell, and the supporting structure of the coil is eliminated, so that the manufacturing cost and the assembly cost of parts can be greatly reduced.

Preferably, the coil can be embedded in the inner surface of the coil supporting structure after being wound, so that the distance between the coil and the magnet is further reduced, and the driving force is improved.

Compared with the prior art, the utility model discloses produced beneficial effect is:

(1) the utility model provides a motor vibrator subassembly's magnetic field and the magnetic field repulsion of motor end cover reach the power balance to combine to use magnetic liquid, thereby make the oscillator at the inside suspension of motor, the vibrator subassembly is inside the motor, and both ends direction all has the repulsion, and vibrator subassembly both ends direction power is balanced, and this structure magnetic field polarity can reverse completely. Under certain conditions, the damping characteristic of the plastic spring is utilized, so that the damping requirement of the motor can be met without magnetic liquid, and compared with the motor utilizing the magnetic liquid or other damping materials, the motor made by utilizing the damping characteristic of the plastic spring is better in consistency.

(2) The utility model provides a wider driving force can be realized through the structure of the multistage ferromagnetic material body of multiunit coil collocation, reinforcing tactile feedback effect.

(3) The utility model provides a ferromagnetic material trade mark can be adjusted in step to third magnetic part and fourth magnetic part, through magnetizing strong and weak, promptly synchronous reinforcing or synchronous weakening, can also differentiate the adjustment and magnetize strong and weak, promptly both sides magnetic field intensity can be inequality, its third magnetic part and fourth magnetic part decide magnetization intensity according to practical application, can adjust motor resonance frequency and vibration effect; that is to the utility model discloses to the third magnetic part and the fourth magnetic part of playing the damping effect of two terminal surfaces, its respective ferromagnetic material tablet, degree of magnetizing can be different, can saturate and magnetize, form the balanced magnetic field of power, also can differentiate each other and magnetize (asymmetric magnetization), initial balance position of adjustment oscillator that can be nimble through this method, adjustment vibration system's that also can be nimble resonant frequency, in order to satisfy different application scenes to the different resonant frequency's of vibrating motor requirement, especially the customer needs very low resonant frequency point to recreation and VR digital scene, if magnetize to third magnetic part and fourth magnetic part symmetry, resonant frequency does not lowly so, so the utility model provides an asymmetric magnetization can solve this problem.

(4) The utility model provides a connecting rod from left to right passes first elastic component, first quality piece, first magnetic part, first connecting piece, inside magnetic part, second connecting piece, second magnetic part, second quality piece, second elastic component's hole in proper order, and metal bar (connecting rod) of using promptly will first elastic component, first quality piece, first magnetic part, inside magnetic part, second quality piece and second elastic component cluster and fix, improve manufacturing accuracy and motor product reliability.

(5) Compared with the prior art, the utility model discloses a symmetrical magnetic force field needs less motion space, and the main objective is in order to realize providing more for even vibration volume response in the broad frequency band within range to provide abundanter, fine and smooth tactile feedback for the customer. Simultaneously the utility model discloses a surround the magnet steel design, combine to use magnetic liquid to make the oscillator suspend in stator inner mould chamber to avoid the oscillator and the quality problems such as noise that stator inner mould chamber friction leads to.

(6) The utility model adopts the superposition of a plurality of plastic springs to realize the flexible adjustment of the vibration system f 0; through the structural design of special plastic spring, increase radial rigidity to with the axle form mounting rigid connection of oscillator, avoid the oscillator to take place the friction with the chamber inner wall of going in the motion process, and through the material characteristic of plastic spring, young modulus is low, characteristics such as the internal stress is little after the shaping, effectively avoids the spring fracture problem, improves product reliability.

The utility model provides a single spring can make alone, and the shaping degree of difficulty is little, and the molding is better to be designed, and a plurality of springs pass through technologies stack such as ultrasonic bonding or veneer together, and interval isoparametric between the spring is littleer than integrated into one piece, more saves space.

Drawings

Fig. 1 is a schematic view of an external structure of a broadband motor provided by the present invention;

fig. 2 is a top view of the broadband motor according to the present invention;

fig. 3 is an exploded view of the broadband motor provided by the present invention;

fig. 4 is a cross-sectional view of the broadband motor provided by the present invention;

fig. 5 is a partial cross-sectional view of the interior of the broadband motor provided by the present invention;

fig. 6 is an internal structure view of the broadband motor provided by the present invention;

FIG. 7 is a front view of FIG. 6;

fig. 8 is another internal structural view of the broadband motor according to the present invention;

FIG. 9 is a front view of FIG. 8;

fig. 10 is a schematic view of a connecting member structure provided by the present invention;

fig. 11 is a schematic structural diagram of a coil support structure provided by the present invention;

fig. 12 is a schematic structural diagram of the first and second masses provided by the present invention;

fig. 13 is a schematic structural view of the first and second magnetic members provided by the present invention;

fig. 14 is a schematic structural view of a third magnetic member and a fourth magnetic member provided in the present invention;

fig. 15 is a schematic structural diagram of a coil provided by the present invention;

fig. 16 is a front view of the spring provided by the present invention;

fig. 17 is an exploded view of another broadband motor according to the present invention;

fig. 18 is a diagram of another wideband motor housing provided by the present invention;

the reference numbers are as follows:

1. a housing; 2. a coil; 3. a connecting member; 31. a connecting rod; 32. a first connecting member; 33. a second connecting member; 4. a first magnetic member; 5. a second magnetic member; 6. a third magnetic member; 7. a fourth magnetic member; 8. an end cap; 81. a left end cap; 82. a right end cap; an internal magnetic member; 10. a first mass block; 11. a second mass block; 12. a first elastic member; 13. a second elastic member; 14. a coil support structure.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Example 1: wide-frequency motor of plastic spring

As shown in fig. 1 to 16, the broadband motor provided by this embodiment includes a coil assembly, the coil assembly includes two coils 2, a housing 1, a magnetic assembly, a connecting member 3, a mass block, and an elastic mechanism, the magnetic assembly is disposed in the housing 1, and the magnetic assembly includes a first magnetic member 4, a second magnetic member 5, a third magnetic member 6, a fourth magnetic member 7, and an internal magnetic member 9.

First magnetism spare 4 and second magnetism spare 5 are located the both sides of inside magnetism spare 16, one side that connecting piece 3 was kept away from to first magnetism spare 4 is provided with third magnetism spare 6, one side that connecting piece 3 was kept away from to second magnetism spare 5 is provided with fourth magnetism spare 7, first magnetism spare 4 and inside magnetism spare repel each other, second magnetism spare 5 and inside magnetism spare repel each other, first magnetism spare 4 and third magnetism spare 6 repel each other, second magnetism spare 5 and fourth magnetism spare 7 repel each other.

Wherein, the shell that this embodiment provided includes stator and end cover 8, the end cover includes left end cover 82 and right end cover 82, the stator includes two half-cylinder structures, and two half-cylinder structures form the cylinder structure, and wherein left end cover, cylinder structure and right end cover form the enclosure space, third magnetic component 6 is installed to left end cover 81 inboard, right end cover 82 inboard installation fourth magnetic component 7.

The stator in this embodiment is a hollow structure, wherein a vibrator assembly is installed in the hollow structure of the stator, and in this embodiment, the connecting member 3, the first magnetic member 4, the second magnetic member 5, the internal magnetic member 9 and the mass block form the vibrator assembly; the mass block comprises a first mass block 10 and a second mass block 11, wherein the first mass block 10 is sleeved on the periphery of one side, away from the internal magnetic part 9, of the first magnetic part 4, the second mass block 11 is sleeved on the periphery of one side, away from the internal magnetic part 9, of the second magnetic part 5, and a first elastic assembly 12 is arranged at one end, away from the first magnetic part, of the first mass block; and a second elastic component 13 is arranged at one end of the second mass 11, which is far away from the second magnetic part 5.

Specifically, the first mass block and the second mass block in this embodiment are hollow structures, the hollow structure of the first mass block is adapted to the first magnetic member, and the hollow structure of the second mass block is adapted to the second magnetic member. The first mass block and the second mass block are cylindrical structures with one ends open, and the first magnetic part and the second magnetic part are respectively assembled in the cylindrical structures from the openings, wherein the first magnetic part and the second magnetic part are cylindrical, the cylindrical structure with one end open of the first mass block is matched with the cylindrical first magnetic part, and the cylindrical structure with one end open of the second mass block is matched with the cylindrical second magnetic part.

In this embodiment, the two coils 2 are sleeved on the periphery of the vibrator assembly, and the first magnetic member 4, the second magnetic member 5, the internal magnetic member, the first mass block and the second mass block are connected through the connecting member 3.

The connecting piece provided by the embodiment comprises a first connecting piece 32, a second connecting piece 33 and a connecting rod 31, wherein the connecting rod penetrates through holes of the first connecting piece and the second connecting piece; wherein, the utility model provides a connecting rod from left to right passes first elastic component 12, first quality piece 10, first magnetic part 4, first connecting piece 32, inside magnetic part 9, second connecting piece 33, second magnetic part 5, second quality piece 11, the through-hole of second elastic component 13 in proper order, wherein, the periphery of first connecting piece and second connecting piece is equipped with coil 2 respectively, and wherein, connecting rod 31 is the metal rod.

The broadband motor provided in this embodiment further includes a coil support structure 14, wherein the coil support structure 14 provided in this embodiment is sleeved on the periphery of the coil assembly, the coil support structure 14 is cylindrical, and the coil provided in this embodiment is annular and is sleeved on the peripheries of the first connecting piece and the second connecting piece which are disc-shaped.

The first elastic component and the second elastic component provided in this embodiment each include 2 springs, and the 2 springs are welded together by ultrasonic welding to form the first elastic component and the second elastic component. Wherein, the spring is a plastic spring.

The coil provided in the embodiment is of a hollow ring structure, surrounds the peripheries of the first connecting piece and the second connecting piece and is not in contact with the connecting pieces; the material can be a conductor material such as copper wire.

The first magnetic part 4, the second magnetic part 5 of this embodiment are the same, all are equipped with the through-hole, and the shape is cylindrical, the utility model provides a third magnetic part 6, fourth magnetic part 7 are the same, and the shape is cylindrical, and first magnetic part, second magnetic part, third magnetic part 6, fourth magnetic part 7 and inside magnetic part are the permanent magnet.

Example 2: wide-frequency motor of plastic spring

As shown in fig. 17, the present embodiment is different from embodiment 1 in that: the housing 1 is different; in addition, in the present embodiment, a coil support structure is eliminated, and as shown in fig. 18, in the case of the present embodiment, the case 1 is an integral cylindrical structure, the coil 2 is directly wound on the inside of the case 1, an independent coil support structure is eliminated, and the internal structure of the case is directly set to be capable of supporting the coil; namely, the improvement can greatly reduce the manufacturing cost and the assembly cost of the parts.

The utility model adopts the superposition of a plurality of plastic springs to realize the flexible adjustment of the vibration system f 0; through the structural design of special plastic spring, increase radial rigidity to with the axle form mounting rigid connection of oscillator, avoid the oscillator to take place the friction with the chamber inner wall of going in the motion process, and through the material characteristic of plastic spring, young modulus is low, characteristics such as the internal stress is little after the shaping, effectively avoids the spring fracture problem, improves product reliability.

Most importantly, the utility model provides a single spring can make alone, and the shaping degree of difficulty is little, and the better design of molding, and a plurality of springs pass through processes stack such as ultrasonic bonding or veneer together, and interval isoparametric between the spring is littleer than integrated into one piece, more saves space.

Those of ordinary skill in the art will understand that: the above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A broadband motor comprises a shell, a magnetic component, an elastic mechanism and a connecting piece; the elastic mechanism comprises a first elastic component and a second elastic component;

the magnetic connector is characterized by further comprising a coil assembly, wherein the coil assembly comprises a plurality of coils, the magnetic assembly is arranged in the shell, and the plurality of coils surround the periphery of the connector; magnetic component includes first magnetic part, second magnetic part, third magnetic part, fourth magnetic part and inside magnetic part, connecting piece, first magnetic part, second magnetic part and inside magnetic part constitute the oscillator subassembly, first magnetic part, second magnetic part and inside magnetic part pass through the connecting piece and connect, first magnetic part and second magnetic part are located the both sides of inside magnetic part, one side that inside magnetic part was kept away from to first magnetic part is equipped with first elastic component, one side that inside magnetic part was kept away from to second magnetic part is equipped with second elastic component, one side that first magnetic part was kept away from to first elastic component is provided with third magnetic part, one side that second magnetic part was kept away from to second elastic component is provided with fourth magnetic part.

2. The broadband motor according to claim 1, wherein the connecting member comprises a first connecting member, a second connecting member, and a connecting rod, the connecting rod passing through the through holes of the first connecting member and the second connecting member; the connecting rod penetrates through a through hole of the internal magnetic part, the internal magnetic part is positioned between the first connecting part and the second connecting part, and the connecting rod penetrates through holes of the first magnetic part and the second magnetic part; the first connecting piece is located between the first magnetic piece and the internal magnetic piece, the second connecting piece is located between the second magnetic piece and the internal magnetic piece, and coils are sleeved on the peripheries of the first connecting piece and the second connecting piece.

3. The broadband motor according to claim 2, wherein the first and second elastic members are provided with through holes or blind holes, and the connecting rod penetrates through the through holes or blind holes of the first and second elastic members to connect with the vibrator member.

4. The broadband motor according to claim 2, further comprising a mass block, wherein the mass block, the connecting member, the first magnetic member, the second magnetic member and the internal magnetic member constitute a vibrator assembly, the mass block comprises a first mass block and a second mass block, the first mass block is sleeved on the periphery of one side of the first magnetic member away from the internal magnetic member, the second mass block is sleeved on the periphery of one side of the second magnetic member away from the internal magnetic member, and a first elastic assembly is arranged at one end of the first mass block away from the first magnetic member; and a second elastic assembly is arranged at one end of the second mass block, which is far away from the second magnetic piece.

5. The broadband motor according to claim 4, wherein the first mass block and the second mass block are provided with through holes, the connecting rod passes through the through holes of the first mass block and the second mass block, the first mass block and the second mass block are hollow structures, the hollow structure of the first mass block is matched with the first magnetic member, and the hollow structure of the second mass block is matched with the second magnetic member.

6. The broadband motor of claim 1 further comprising a coil support structure disposed about the periphery of the coil assembly, the coil support structure being cylindrical.

7. The broadband motor according to claim 1, wherein the housing comprises a stator and an end cover, the stator is a hollow structure, the hollow structure is provided with a vibrator assembly, the end cover comprises a left end cover and a right end cover, and the left end cover, the right end cover and the stator form a closed space.

8. The broadband motor according to claim 7, wherein the stator comprises two semi-cylindrical structures, the two semi-cylindrical structures form a cylindrical structure, the left end cover is connected with the left end of the cylindrical structure, the right end cover is connected with the right end of the cylindrical structure, the left end cover, the cylindrical structure and the right end cover form a closed space, the third magnetic assembly is installed on the inner side of the left end cover, and the fourth magnetic assembly is installed on the inner side of the right end cover.

9. The broadband motor of claim 7 wherein the stator is an integral cylindrical structure, the left end cap being attached to a left end of the cylindrical structure and the right end cap being attached to a right end of the cylindrical structure.

10. The broadband motor of claim 1 wherein the first and second resilient assemblies each comprise a plurality of springs, the plurality of springs being connected.