CN210129813U

CN210129813U - Vibrating motor and mobile electronic equipment

Info

Publication number: CN210129813U
Application number: CN201920819055.3U
Authority: CN
Inventors: 黄自乐
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-05-31
Filing date: 2019-05-31
Publication date: 2020-03-06
Anticipated expiration: 2029-05-31

Abstract

The utility model discloses a vibrating motor and mobile electronic device, include: an outer housing; the first coil and the second coil are fixed on two opposite inner wall surfaces of the outer shell; the vibrator component is movably accommodated in the outer shell and positioned between the first coil and the second coil, and comprises a counterweight part and a magnet part; and an elastic body having both ends elastically acting between the vibrator unit and the outer case. The vibrator assembly is suspended between the first coil and the second coil, the first coil and the second coil generate a first driving force along the first axial direction and a second driving force along the second axial direction to the vibrator assembly through the magnet part, and due to the fact that the size and the direction of the first driving force and the second driving force can be changed along with time, the vibrator assembly can be matched with the elastic force reversely applied to the vibrator assembly by the elastic body under the action of the resultant force of the first driving force and the second driving force, reciprocating vibration in multiple directions can be achieved, and the vibration effect of the motor is improved.

Description

Vibrating motor and mobile electronic equipment

Technical Field

The utility model relates to a consumer electronics product technology field, concretely relates to vibrating motor and mobile electronic device.

Background

Portable consumer electronic devices, such as mobile phones, handheld game consoles, navigation devices, handheld multimedia entertainment devices, etc., typically use motors for system feedback, such as incoming call prompts for mobile phones, vibration feedback for game consoles, etc. At present, motors used by portable consumer electronic devices are all motors vibrating towards a single direction, and the motors only vibrate towards one direction during vibration, but cannot vibrate towards other directions, so that the vibration direction of the motors is limited.

SUMMERY OF THE UTILITY MODEL

Therefore, the to-be-solved technical problem of the present invention lies in overcoming the defect that the motor can only vibrate towards a single direction in the prior art, thereby providing a vibration motor and a mobile electronic device.

In order to solve the technical problem, the technical scheme of the utility model as follows:

a vibration motor comprising:

an outer housing;

the driving assembly comprises a first coil and a second coil which are fixed on two opposite inner wall surfaces of the outer shell;

the vibrator assembly is accommodated in the outer shell in a movable mode along the length direction of the outer shell, is positioned between the first coil and the second coil, and comprises a counterweight part and a magnet part embedded in the counterweight part; the first coil generates a first driving force in a first axial direction to the magnet portion, and the second coil generates a second driving force in a second axial direction to the magnet portion; the first axial direction is perpendicular to the second axial direction;

and an elastic body having one end elastically acting on the vibrator assembly and the other end elastically acting on the outer case, and reversely applying an elastic force to the vibrator assembly against the first driving force and the second driving force applied to the magnet portion.

Further, the elastic body comprises four elastic blocks; one end of the elastic block is elastically abutted against the inner wall of the outer shell, and the other end of the elastic block is elastically abutted against the surface of the counterweight part facing the first coil or the second coil; the two elastic blocks are arranged at two ends of the first coil along the length direction of the outer shell, and the other two elastic blocks are respectively arranged at two ends of the second coil along the length direction of the outer shell.

Further, be equipped with the guiding hole on two tip on the counter weight portion along its length direction, the axial of guiding hole with second axis direction is the same, the elasticity piece includes:

a main body part having one end elastically abutting against a surface of the weight part facing the first coil or the second coil and the other end elastically abutting against an inner wall of the outer case, the main body part reversely applying an elastic force to the vibrator component against a second driving force applied to the magnet part;

and the boss structure is arranged on the end face, facing the counterweight part, of the main body part in a protruding mode and matched with the guide hole, and the boss structure is used for reversely applying elastic force for resisting the first driving force applied to the magnet part to the vibrator component.

Further, the driving assembly comprises a top plate and a bottom plate which are respectively connected to two opposite inner wall surfaces of the outer shell, the first coil is fixed to the top plate, and the second coil is fixed to the bottom plate; and the top plate and the bottom plate are respectively provided with a guide hole for the main body part to penetrate through.

Further, the four elastic blocks are identical in structural shape.

Further, the elastic block is made of special silicon rubber.

Further, the counterweight part is formed by superposing three identical mass blocks.

Further, the driving assembly further comprises a circuit board which is conducted with the first coil and the second coil and is used for connecting an external circuit of the circuit board.

Further, the outer shell comprises a first shell and a second shell matched with the first shell; the first shell is of a semi-closed cuboid structure, the driving assembly, the elastic body and the vibrator assembly are installed in the first shell, and the second shell is fixed at the open end of the first shell.

The utility model also provides a mobile electronic equipment, including the aforesaid vibrating motor.

The utility model discloses technical scheme has following advantage:

1. the utility model provides a vibrating motor, through set up the vibrator subassembly in the suspension between the first coil and the second coil of drive assembly, first coil and second coil can produce the first drive power along the first axial direction and the second drive power in the second axial direction to the vibrator subassembly through the magnet portion; because the magnitude and the direction of the first driving force and the second driving force can be changed along with time, and the direction of the first driving force is always vertical to that of the second driving force, after the resultant force of the first driving force and the second driving force acts on the magnet part, the vibrator component can realize reciprocating vibration in multiple directions by matching with the elastic force reversely applied to the vibrator component by the elastic body, and the vibration effect of the motor is improved.

2. The utility model provides a vibration motor adopts four elastic blocks as the elastic support piece of vibrator subassembly, and four elastic blocks can support the vibrator subassembly well, help the vibrator subassembly to keep vibration balance, reduce the resonant frequency of motor, improve the stability of motor; and because the elastic block is not easy to cause stress fatigue, the high temperature resistance and the aging resistance are good, the stability of the motor can be improved, and the service life of the motor can be prolonged.

3. The utility model provides a vibrating motor, which is provided with a guide hole on the counterweight part of a vibrator component, and the boss structure of an elastic block extends into the structure of the guide hole; in the vibration process of the vibrator assembly, the boss structure reversely applies elastic force to the vibrator assembly to resist the first driving force applied to the magnet part, so that the vibrator assembly can perform reciprocating vibration along the first axial direction; the main body part reversely applies elasticity for resisting the first driving force applied to the magnet part to the vibrator component so that the vibrator component can do reciprocating motion in the direction of the second axis; therefore, the vibrator assembly can perform reciprocating vibration in any direction under the action of the driving assembly and the elastic body, and the vibration effect of the motor is improved.

4. The utility model provides a vibrating motor, the guiding hole on roof and the bottom plate can play the limiting displacement to the main part of elasticity piece, can prevent that the phenomenon of off normal from appearing in the vibration process of elasticity piece to can further improve the stability of vibrator subassembly vibration in-process.

5. The utility model provides a vibrating motor, four elastic blocks's big or small shape is the same, and at the vibration in-process of vibrator subassembly, four elastic blocks are the same to the elasticity size that vibrator subassembly was applyed, and opposite direction enables the vibrator subassembly stability that keeps the vibration state better.

6. The utility model provides a vibrating motor because the counter weight portion die sinking cost of the required size of one shot processing is higher, adopts the mode that the coincide of the mass block that the polylith size is the same forms counter weight portion, can reduction in production cost.

7. The utility model provides a vibrating motor adopts the elastic block that special silicone rubber made, and high temperature resistant aging performance is good, and is not fragile, long service life.

8. The utility model also provides an electronic equipment adopts foretell vibrating motor, has that stability is good, long service life, can produce the advantage of the sense of shaking in a plurality of directions.

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 embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic view of the overall structure of a vibration motor according to an embodiment of the present invention;

fig. 2 is a schematic view illustrating a connection relationship between a vibrator assembly and a driving assembly of a vibration motor according to an embodiment of the present invention;

fig. 3 is a schematic half-sectional view of a vibration motor according to an embodiment of the present invention;

fig. 4 is a schematic view illustrating an assembly relationship between the first casing and the second casing of the vibration motor according to the embodiment of the present invention.

Description of reference numerals: 1. an outer housing; 11. a first housing; 12. a second housing; 2. a drive assembly; 21. A first coil; 22. a second coil; 23. a top plate; 24. a base plate; 25. a circuit board; 26. a guide hole; 3. a vibrator assembly; 31. a counterweight portion; 311. a guide hole; 32. a magnet portion; 4. an elastic block; 41. a main body portion; 42. and (4) a boss structure.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

A vibration motor as shown in fig. 1 to 4 includes an outer case 1, and a driving assembly 2, a vibrator assembly 3 and an elastic body accommodated in the outer case 1. The driving assembly 2 includes a first coil 21 and a second coil 22 fixed on two opposite inner wall surfaces of the outer casing 1. The vibrator assembly 3 includes a weight portion 31 and a magnet portion 32 embedded in the weight portion 31, the magnet portion 32 includes two sets of magnetic blocks with opposite polarities, and the weight portion 31 is suspended between the first coil 21 and the second coil 22 through elastic bodies at two ends. The first coil 21 generates a first driving force in the first axial direction to the magnet portion 32, and the second coil 22 generates a second driving force in the second axial direction to the magnet portion 32; the first axial direction is perpendicular to the second axial direction. Opposite ends of the elastic body elastically act on the vibrator assembly 3 and the inner wall of the outer case 1, respectively, and apply an elastic force to the vibrator assembly 3 in the opposite direction against the first driving force and the second driving force applied to the magnet portion 32.

By suspending the vibrator assembly 3 between the first coil 21 and the second coil 22 of the driving assembly 2, the first coil 21 and the second coil 22 can generate a first driving force in the first axial direction and a second driving force in the second axial direction to the vibrator assembly 3 through the magnet portions 32; because the direction of the first driving force is always perpendicular to the direction of the second driving force, and the magnitude and direction of the first driving force and the second driving force can be changed along with time, after the resultant force of the first driving force and the second driving force acts on the magnet part 32, the elastic body is matched with the elastic body to reversely exert elastic force on the vibrator component 3, so that the vibrator component 3 can realize reciprocating vibration in multiple directions, and the vibration effect of the motor is improved.

In the present embodiment, the elastic body includes four elastic pieces 4. One end of the elastic block 4 elastically abuts against the inner wall of the outer shell 1, and the other end elastically abuts against the surface of the counterweight 31 facing the first coil 21 or the second coil 22; two of the elastic blocks 4 are arranged at two ends of the first coil 21 along the length direction of the outer shell 1, and the other two elastic blocks 4 are respectively arranged at two ends of the second coil 22 along the length direction of the outer shell 1. In other embodiments, the elastic block 4 may be fixed to the inner wall surface of the outer casing 1 by gluing. The four elastic blocks 4 are symmetrically arranged, so that a good supporting effect can be achieved on the vibrator component 3, the vibrator component 3 can be kept in vibration balance, the resonance frequency of the motor is reduced, and the stability of the motor is improved; and because the elastic block 4 is not easy to cause stress fatigue, the high temperature resistance and the aging resistance are good, the stability of the motor can be improved, and the service life of the motor can be prolonged.

Specifically, the four elastic blocks 4 are identical in size and shape and are made of special silicon rubber materials. In the vibration process of the vibrator component 3, the four elastic blocks 4 exert the same elastic force and opposite directions on the vibrator component 3, so that the vibrator component 3 can better keep the stability of the vibration state. The elastic block 4 made of special silicon rubber is not easy to damage due to good high-temperature aging resistance of the silicon rubber, so that the stability and the service life of the elastic block 4 and the vibration motor can be improved.

In the present embodiment, the weight portion 31 is provided with cylindrical guide holes 311 at both ends in the longitudinal direction thereof, and the axial direction of the guide holes 311 is the same as the second axial direction. The elastic block 4 includes a main body 41 and a boss structure 42 protruding from an end surface of the main body 41 facing the weight 31, and the boss structure 42 is also cylindrical and extends into the guide hole 311. When the vibrator assembly 3 performs reciprocating vibration in the first axial direction, the boss structure 42 reversely applies an elastic force against the first driving force applied to the magnet portion 32 to the weight portion 31 through the guide hole 311; when the vibrator assembly 3 performs reciprocating vibration in the second axial direction, the boss structure 42 can play a role of guiding the vibration of the vibrator assembly 3, and is helpful for keeping the vibration balance of the vibrator assembly 3; when the vibrator assembly 3 vibrates reciprocally under the combined action of the first driving force and the second driving force, the boss structure 42 reversely applies an elastic force to the vibrator assembly 3 against the first driving force applied to the magnet portion 32, the main body portion 41 reversely applies an elastic force to the vibrator assembly 3 against the second driving force applied to the magnet portion 32, and the combined force of the two elastic forces enables the vibrator assembly 3 to realize reciprocal vibration in any direction.

In a preferred embodiment of the present embodiment, the driving assembly 2 includes a top plate 23 and a bottom plate 24 respectively attached to two opposite inner wall surfaces of the outer case 1, the first coil 21 is fixed to the top plate 23, and the second coil 22 is fixed to the bottom plate 24; guide holes 26 through which the body portion 41 passes are provided in both the top plate 23 and the bottom plate 24. The guide holes 26 on the top plate 23 and the bottom plate 24 can limit the main body 41 of the elastic block 4, and can prevent the elastic block 4 from deviating during the vibration process, so that the stability of the vibrator assembly 3 during the vibration process can be further improved.

In this embodiment, the driving assembly 2 further includes a circuit board 25 electrically connected to the first coil 21 and the second coil 22 and used for connecting the circuit board 25 to an external circuit. The circuit board 25 includes an integrally formed U-shaped board body and a wiring board, two support arms of the U-shaped board body are respectively supported on the inner wall surfaces of the top plate 23 and the bottom plate 24 and electrically connected with the first coil 21 and the second coil 22, a connecting arm between the two support arms not only connects the two support arms, but also plays a supporting role between the top plate 23 and the bottom plate 24, and helps to keep the stability of the relative position between the top plate 23 and the bottom plate 24, i.e., the stability of the relative position between the first coil 21 and the second coil 22 can be better kept. One end of the wiring board is connected with one supporting arm of the U-shaped plate body and extends out after being bent outwards through an opening on the outer shell body 1, and the wiring board is provided with a contact which can be connected with an external circuit.

In the present embodiment, the weight 31 is formed by stacking three identical mass blocks. Because the mold opening cost of the counterweight part 31 with the size required by one-time processing is higher, the production cost can be reduced by adopting a mode of forming the counterweight part 31 by superposing a plurality of mass blocks with the same size.

In the present embodiment, the outer casing 1 includes a first casing 11 and a second casing 12 adapted to the first casing 11; wherein, first casing 11 is semi-enclosed cuboid structure, and drive assembly 2, elastomer and vibrator subassembly 3 all install in first casing 11, and second casing 12 is fixed at the open end of first casing 11.

In summary, the embodiment of the present invention provides a vibration motor, in which the vibrator assembly 3 is suspended between the first coil 21 and the second coil 22 of the driving assembly 2, the first coil 21 and the second coil 22 can generate a first driving force along the first axial direction and a second driving force along the second axial direction to the vibrator assembly 3 through the magnet portion 32; because the magnitude and direction of the first driving force and the second driving force can be changed along with time, and the direction of the first driving force is always perpendicular to that of the second driving force, after the resultant force of the first driving force and the second driving force acts on the magnet part 32, the vibrator component 3 can realize reciprocating vibration in multiple directions by matching with the elastic force reversely applied to the vibrator component 3 by the elastic body, and the vibration effect of the motor is improved.

The utility model also provides a mobile electronic equipment, including foretell vibrating motor. The electronic equipment adopting the vibrating motor has the advantages of good vibration stability, long service life and capability of generating vibration sense in multiple directions.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications can be made without departing from the scope of the invention.

Claims

1. A vibration motor, comprising:

an outer casing (1);

a drive assembly (2) comprising a first coil (21) and a second coil (22) fixed on two opposite inner wall surfaces of the outer shell (1);

a vibrator assembly (3) which is accommodated in the outer case (1) so as to be movable in the longitudinal direction of the outer case (1), is positioned between the first coil (21) and the second coil (22), and includes a weight portion (31) and a magnet portion (32) embedded in the weight portion (31); the first coil (21) generates a first driving force in a first axial direction to the magnet portion (32), and the second coil (22) generates a second driving force in a second axial direction to the magnet portion (32); the first axial direction is perpendicular to the second axial direction;

and an elastic body, one end of which elastically acts on the vibrator assembly (3) and the other end of which elastically acts on the outer housing (1), and which reversely applies an elastic force to the vibrator assembly (3) to oppose the first driving force and the second driving force applied to the magnet portion (32).

2. A vibration motor as claimed in claim 1, wherein said elastic body comprises four elastic blocks (4); one end of the elastic block (4) is elastically abutted against the inner wall of the outer shell (1), and the other end of the elastic block is elastically abutted against the surface of the counterweight part (31) facing the first coil (21) or the second coil (22); the two elastic blocks (4) are arranged at two ends of the first coil (21) along the length direction of the outer shell (1), and the other two elastic blocks (4) are respectively arranged at two ends of the second coil (22) along the length direction of the outer shell (1).

3. The vibration motor according to claim 2, wherein the weight portion (31) is provided with guide holes (311) at both end portions in a length direction thereof, an axial direction of the guide holes (311) is the same as the second axial direction, and the elastic block (4) comprises:

a main body part (41) having one end elastically abutting against a surface of the weight part (31) facing the first coil (21) or the second coil (22) and the other end elastically abutting against an inner wall of the outer case (1), the main body part (41) applying an elastic force in a reverse direction to the vibrator assembly (3) against a second driving force applied to the magnet part (32);

and the boss structure (42) is arranged on the end face, facing the counterweight part (31), of the main body part (41) in a protruding mode and is matched with the guide hole (311), and the boss structure (42) reversely applies elastic force for resisting the first driving force applied to the magnet part (32) to the vibrator assembly (3).

4. A vibration motor according to claim 3, wherein said driving assembly (2) comprises a top plate (23) and a bottom plate (24) respectively attached to two opposite inner wall surfaces of said outer case (1), said first coil (21) is fixed to said top plate (23), and said second coil (22) is fixed to said bottom plate (24); and guide holes (26) for the main body part (41) to penetrate through are formed in the top plate (23) and the bottom plate (24).

5. A vibration motor as claimed in claim 3, characterized in that the four elastic blocks (4) are identical in structural shape.

6. A vibration motor as claimed in claim 3, characterized in that said elastic block (4) is made of special silicone rubber.

7. A vibration motor according to claim 1, wherein said weight portion (31) comprises three identical mass pieces stacked together.

8. The vibration motor according to claim 1, wherein the driving assembly (2) further comprises a wiring board (25) in conduction with the first coil (21) and the second coil (22) and for connecting a circuit external to the wiring board (25).

9. A vibration motor according to claim 1, wherein the outer case (1) comprises a first case (11) and a second case (12) fitted to the first case (11); the first shell (11) is a semi-closed cuboid structure, the driving assembly (2), the elastic body and the vibrator assembly (3) are installed in the first shell (11), and the second shell (12) is fixed at the open end of the first shell (11).

10. A mobile electronic device, characterized in that it comprises a vibration motor according to any one of claims 1 to 9.