Vibration motor

Abstract

The vibration motor comprises a shell, a stator, a swing seat, a rotor, two first elastic pieces and two second elastic pieces, the stator is fixedly arranged at the bottom end of the shell, the middle of the swing seat is rotatably connected with the inner walls of the two sides of a swing cavity, the top end of the swing seat penetrates through a swing opening and extends outwards, the bottom end of the swing seat is adjacent to the stator, and the rotor is arranged on the swing opening. The rotor is fixedly arranged at the bottom end of the swing seat, the two first elastic pieces are symmetrically arranged on the two sides of the top end of the swing seat, the two second elastic pieces are symmetrically arranged on the two sides of the bottom end of the swing seat, and the swing seat is driven to swing at high frequency by changing the direction of current in the coil at high frequency. The two first elastic pieces at the top end of the swing seat continuously deform, accumulate force and release energy to reset, assistance is provided for swing of the swing seat, and the bottom end of the swing seat is in the same way, so that the efficiency of the motor is improved, and meanwhile stress of the two ends of the swing seat is balanced.

Description

Technical Field

[0001] The utility model relates to the technical field of motors, in particular to a vibration motor. Background Art

[0002] At present, vibration motors on the market generally include a stator, a frame arranged on the stator, a swing seat rotatably connected in the frame, a rotor arranged on the swing seat, and two springs. The two springs are usually arranged on both sides of one end of the swing seat close to the rotor. When the magnetic poles of the stator continuously change, the rotor will be driven to drive the swing seat to swing reciprocally, while compressing and stretching the springs. The energy release and reset of the springs are used to assist the swing seat to swing and generate vibration. In order to maximize the kinetic energy of the springs, the axis of the springs often tangents to the swing direction of the swing seat.

[0003] However, motors with springs only arranged at one end of the swing seat have the following problems. One is the insufficient efficiency of the motor. The other is the uneven force on both ends of the swing seat, resulting in unbalanced resonance and easy occurrence of noise. At the same time, the wear of the swing seat transfer end is uneven, affecting the service life of the motor. Summary of the Utility Model

[0004] In view of this, the utility model provides a vibration motor, which is used to solve the problems in the existing vibration motor, including insufficient efficiency of the motor, uneven force on both ends of the swing seat, resulting in unbalanced resonance and easy occurrence of noise, and uneven wear of the swing seat transfer end, affecting the service life of the motor.

[0005] To achieve one or part or all of the above purposes or other purposes, the utility model provides a vibration motor, which includes a housing, a stator, a swing seat, a rotor, two first elastic members and two second elastic members. A swing cavity is arranged in the housing, and a swing port communicating with the swing cavity is arranged at the top end of the housing. The stator is fixedly arranged at the bottom end of the housing, and a coil is sleeved on the stator. The swing seat is movably arranged in the swing cavity, the middle part of the swing seat is rotatably connected with the inner walls on both sides of the swing cavity, the top end of the swing seat extends outwards through the swing port, the bottom end of the swing seat is adjacent to the stator, the rotor is fixedly arranged at the bottom end of the swing seat, the two first elastic members are symmetrically arranged on both sides of the top end of the swing seat, one end of the first elastic member is connected with the top end of the swing seat, and the other end is connected with the housing. The two second elastic members are symmetrically arranged on both sides of the bottom end of the swing seat, one end of the second elastic member is connected with the bottom end of the swing seat, and the other end is connected with the housing.

[0006] Preferably, both the first elastic member and the second elastic member are springs.

[0007] Preferably, first protrusions are symmetrically arranged on both sides of the top end of the swing seat, second protrusions are arranged opposite to the first protrusions at the top end of the housing, one end of the first elastic member is sleeved on the corresponding first protrusion, and the other end of the first elastic member is sleeved on the corresponding second protrusion.

[0008] Preferably, third protrusions are symmetrically arranged on both sides of the bottom end of the swing seat, fourth protrusions are arranged opposite to the third protrusions at the bottom end of the housing, one end of the second elastic member is sleeved on the corresponding third protrusion, and the other end of the second elastic member is sleeved on the corresponding fourth protrusion.

[0009] Preferably, rotating shafts are connected to the inner walls on both sides of the swing cavity, and the middle part of the swing seat is rotatably sleeved on the rotating shafts.

[0010] Preferably, the swing seat and the rotating shaft are rotatably connected through bearings.

[0011] Preferably, yokes are symmetrically arranged on both sides of the bottom end of the swing seat, and the mover is located between the two yokes.

[0012] Preferably, an installation cavity is arranged at the bottom end of the swing seat, an upper swing inlet for the mover to pass through is arranged on the front side wall of the installation cavity, clamping grooves are arranged on the left and right side walls of the installation cavity, lower swing inlets for the yokes to pass through are arranged on the left half and the right half of the lower side wall of the installation cavity, the mover and the two yokes are both arranged in the installation cavity, the two yokes are symmetrically arranged on the left and right sides of the installation cavity, a clamping block is arranged on one side of the yoke, the clamping block is clamped in the corresponding clamping groove, and the mover is placed between the two yokes.

[0013] Preferably, the housing is formed by splicing a front frame and a rear frame, and the top end of the stator is clamped between the bottom end of the front frame and the bottom end of the rear frame.

[0014] Preferably, a lever is connected to one side of the extending end of the swing seat.

[0015] Implementing the embodiments of the present invention will have the following beneficial effects:

[0016] After adopting the above-mentioned vibration motor, during use, a positive current is first passed into the coil. Under the magnetic effect of the current, an induced magnetic field is formed between the coil and the stator. At this time, the magnetic pole of the end of the stator with the coil is opposite to the magnetic poles of the two outer ends. Therefore, one end of the rotor will repel one end of the outer side of the stator and attract the end of the stator with the coil, while the other end of the rotor will attract the other end of the outer side of the stator, thereby driving the bottom end of the swing seat to swing in one direction. When the current direction in the coil changes, similarly, the magnetic poles of the end of the stator with the coil and the two outer ends of the stator will be reversed, thereby driving the swing seat to move in the reverse direction. By changing the current direction in the coil at a high frequency, the swing seat is driven to swing at a high frequency. When the swing seat swings, the two first elastic members at the top end of the swing seat will continuously deform to store energy and release energy to reset, providing assistance for the swing of the swing seat to increase the torsion of the swing seat. The transmission relationship between the bottom end of the swing seat and the second elastic member is the same. Therefore, the two first elastic members and the two second elastic members provide assistance for both ends of the swing seat, improving the efficiency of the motor, while balancing the forces on both ends of the swing seat, making the resonance of the swing seat more balanced, reducing the noise during swinging, evenly wearing the transfer end of the swing seat, and extending the service life of the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0018] Wherein:

[0019] Figure 1 is a perspective view of the present invention;

[0020] Figure 2 is an exploded view of the present invention;

[0021] Figure 3 is a longitudinal sectional view of the present invention.

[0022] In the figure: 1, housing; 11, front frame; 12, rear frame; 13, swing cavity; 14, swing opening; 15, second protrusion; 16, installation cavity; 17, upper swing inlet; 18, card slot; 19, lower swing inlet; 2, stator; 3, swing seat; 31, first protrusion; 32, third protrusion; 33, lever; 4, rotor; 5, first elastic member; 6, second elastic member; 7, rotating shaft; 8, bearing; 9, yoke; 91, clamping block. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this utility model belongs; the terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this utility model; the terms "comprising" and "having" and any variations thereof in the specification and claims of this utility model and the above drawings are intended to cover non-exclusive inclusion. The terms "first", "second", etc. in the specification and claims of this utility model or the above drawings are used to distinguish different objects and not to describe a specific order.

[0024] Reference to "embodiment" herein means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of this utility model. The phrase appears in various places in the specification and does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0025] To enable those skilled in the technical field to better understand the solution of this utility model, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the drawings.

[0026] As Figures 1-3 shown, a vibration motor includes a housing 1, a stator 2, a swing seat 3, a rotor 4, two first elastic members 5 and two second elastic members 6. A swing cavity 13 is provided in the housing 1, and a swing port 14 communicating with the swing cavity 13 is provided at the top end of the housing 1. The stator 2 is fixedly arranged at the bottom end of the housing 1, and a coil (not shown in the drawings) is sleeved on the stator 2. The swing seat 3 is movably arranged in the swing cavity 13. The middle part of the swing seat 3 is rotationally connected to the inner walls on both sides of the swing cavity 13. The top end of the swing seat 3 extends outwards through the swing port 14, and the bottom end of the swing seat 3 is adjacent to the stator 2. The rotor 4 is fixedly arranged at the bottom end of the swing seat 3. The two first elastic members 5 are symmetrically arranged on both sides of the top end of the swing seat 3. One end of the first elastic member 5 is connected to the top end of the swing seat 3, and the other end is connected to the housing 1. The two second elastic members 6 are symmetrically arranged on both sides of the bottom end of the swing seat 3. One end of the second elastic member 6 is connected to the bottom end of the swing seat 3, and the other end is connected to the housing 1.

[0027] In one embodiment, the rotor 4 includes two permanent magnets (not shown in the drawings) with opposite magnetic polarities.

[0028] In one embodiment, the first elastic member 5 and the second elastic member 6 can be elastic flaps (not shown in the drawings).

[0029] In this embodiment, the stator 2 is a "mountain"-shaped silicon steel, and the rotor 4 is a permanent magnet. The magnetic poles of the rotor 4 are distributed along the tangent direction of the swing seat 3. During use, first, a positive current is passed through the coil. Under the magnetic effect of the current, an induced magnetic field is formed between the coil and the stator 2. At this time, the magnetic poles at one end of the stator 2 with the coil sleeved are opposite to the magnetic poles at the two outer ends. Therefore, one end of the rotor 4 will repel one end of the stator 2 on the outside and attract the end of the stator 2 with the coil sleeved, while the other end of the rotor 4 will attract the other end of the stator 2 on the outside, thereby driving the bottom end of the swing seat 3 to swing in one direction. When the current direction of the coil changes, similarly, the magnetic poles at one end of the stator 2 with the coil sleeved and the magnetic poles at the two outer ends will be swapped, thereby driving the swing seat 3 to move in the reverse direction. By frequently changing the current direction in the coil, the swing seat 3 is driven to swing frequently. When the swing seat 3 swings, the two first elastic members 5 at the top end of the swing seat 3 will continuously deform to store energy and release energy to reset, providing assistance for the swing of the swing seat 3 to increase the torsion of the swing seat 3. The transmission relationship between the bottom end of the swing seat 3 and the second elastic member 6 is the same. Thus, the two first elastic members 5 and the two second elastic members 6 provide assistance for both ends of the swing seat 3, improving the efficiency of the motor, balancing the forces on both ends of the swing seat 3 at the same time, making the resonance of the swing seat 3 more balanced, reducing the noise during swinging, evenly wearing the transfer end of the swing seat 3, and extending the service life of the motor.

[0030] Furthermore, both the first elastic member 5 and the second elastic member 6 are springs. Springs have good elastic capabilities and are convenient for repeated use.

[0031] Furthermore, first protrusions 31 are symmetrically arranged on both sides of the top end of the swing seat 3. Second protrusions 15 are arranged opposite to the first protrusions 31 at the top end of the housing 1. One end of the first elastic member 5 is sleeved on the corresponding first protrusion 31, and the other end of the first elastic member 5 is sleeved on the corresponding second protrusion 15 to position both ends of the first elastic member 5 through the first protrusions 31 and the second protrusions 15, improving the installation stability of the first elastic member 5 and ensuring stable transmission between the first elastic member 5 and the top end of the swing seat 3.

[0032] Furthermore, third protrusions 32 are symmetrically arranged on both sides of the bottom end of the swing seat 3. Fourth protrusions (not shown in the drawings) are arranged opposite to the third protrusions 32 at the bottom end of the housing 1. One end of the second elastic member 6 is sleeved on the corresponding third protrusion 32, and the other end of the second elastic member 6 is sleeved on the corresponding fourth protrusion to position both ends of the second elastic member 6 through the third protrusions 32 and the fourth protrusions, improving the installation stability of the second elastic member 6 and ensuring stable transmission between the second elastic member 6 and the bottom end of the swing seat 3.

[0033] Further, rotating shafts 7 are connected to the inner walls on both sides of the swing cavity 13. The middle part of the swing seat 3 is rotatably sleeved on the rotating shafts 7. The two ends of the rotating shafts 7 are connected to the inner walls of the corresponding swing cavities 13 by means of insertion, so as to facilitate the assembly of the swing seat 3 and the rotating shafts 7.

[0034] Further, the swing seat 3 is rotatably connected to the rotating shafts 7 through bearings 8 to reduce the rotational resistance of the swing seat 3 and make its swing smoother.

[0035] Further, yokes 9 are symmetrically arranged on both sides at the bottom end of the swing seat 3. The mover 4 is located between the two yokes 9. The two ends of the mover 4 are respectively abutted against the corresponding yokes 9, so as to magnetize the corresponding yokes 9 through the mover 4 and use the two yokes 9 as the two magnetic poles of the mover 4, thereby increasing the distance between the magnetic poles of the mover 4 and making the swing of the swing seat 3 more accurate when the magnetic poles of the stator 2 change.

[0036] Further, an installation cavity 16 is provided at the bottom end of the swing seat 3. An upper swing inlet 17 for the mover 4 to pass through is provided on the front side wall of the installation cavity 16. Card slots 18 are provided on the left and right side walls of the installation cavity 16. Lower swing inlets 19 for the yokes 9 to pass through are provided on the left and right halves of the lower side wall of the installation cavity 16. The mover 4 and the two yokes 9 are both arranged in the installation cavity 16. The two yokes 9 are symmetrically arranged on the left and right sides of the installation cavity 16. A clamping block 91 is provided on one side of the yoke 9, and the clamping block 91 is clamped in the corresponding card slot 18. The mover 4 is placed between the two yokes 9.

[0037] Specifically, during installation, first insert the yoke 9 into the installation cavity 16 through the corresponding lower swing inlet 19, and make the clamping block 91 on one side of the yoke 9 clamped with the card slot 18 on the corresponding inner wall of the installation cavity 16. After the two yokes 9 are placed in the same way, insert the mover 4 into the installation cavity 16 through the upper swing inlet 17 and place it between the two yokes 9. The mover 4 can be fixed in the installation cavity 16 by means of gluing. At this time, the two ends of the mover 4 are respectively abutted against the yokes 9 on both sides to magnetize the yokes 9 and limit the swing of the yokes 9, so that the clamping block 91 on the yoke 9 is stably clamped in the card slot 18 to prevent the yoke 9 from falling off from the corresponding lower swing inlet 19, and the yoke 9 is fixed in the installation cavity 16, making the installation of the yoke 9 and the mover 4 more convenient.

[0038] Further, the housing 1 is formed by splicing a front frame 11 and a rear frame 12. The front frame 11 is located above the front side of the stator 2, and the rear frame 12 is located above the rear side of the stator 2. The bottom end of the front frame 11 and the bottom end of the rear frame 12 clamp the top end of the stator 2 inside, so as to facilitate the assembly of the vibration motor.

[0039] Further, a lever 33 is connected to one side of the extending end of the swing seat 3. Taking the vibration motor as the power source of the hair clipper as an example, when the vibration motor is installed and used, the lever 33 can be connected to the driving end of the knife holder of the hair clipper, so that the top of the swing seat 3 drives the knife holder to reciprocate at a high frequency through the lever 33, realizing the cutting function.

[0040] Obviously, the embodiments described above are only a part of the embodiments of the present invention, rather than all of them. The preferred embodiments of the present invention are shown in the drawings, but they do not limit the patent scope of the present invention. The present invention can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosed content of the present invention more thorough and comprehensive. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing specific embodiments, or perform equivalent replacements on some of the technical features. Any equivalent structure directly or indirectly using the content of the specification and drawings of the present invention in other related technical fields shall be similarly within the scope of the patent protection of the present invention.

Claims

1. A vibrating motor, characterized in that, Including: A housing, a stator, a swing seat, a rotor, two first elastic members, and two second elastic members; A swing cavity is provided inside the housing, and a swing opening communicating with the swing cavity is provided at the top end of the housing; The stator is fixedly arranged at the bottom end of the housing, and a coil is sleeved on the stator; The swing seat is movably arranged in the swing cavity, the middle part of the swing seat is rotatably connected to the inner walls on both sides of the swing cavity, the top end of the swing seat extends outwards through the swing opening, and the bottom end of the swing seat is adjacent to the stator; The rotor is fixedly arranged at the bottom end of the swing seat; The two first elastic members are symmetrically arranged on both sides of the top end of the swing seat, one end of the first elastic member is connected to the top end of the swing seat, and the other end is connected to the housing; The two second elastic members are symmetrically arranged on both sides of the bottom end of the swing seat, one end of the second elastic member is connected to the bottom end of the swing seat, and the other end is connected to the housing.

2. The vibrating motor according to claim 1, wherein Both the first elastic member and the second elastic member are springs.

3. A vibrating motor according to claim 2, wherein, First protrusions are symmetrically arranged on both sides of the top end of the swing seat, and second protrusions are arranged opposite to the first protrusions at the top end of the housing. One end of the first elastic member is sleeved on the corresponding first protrusion, and the other end of the first elastic member is sleeved on the corresponding second protrusion.

4. A vibration motor according to claim 2, characterized in that, Third protrusions are symmetrically arranged on both sides of the bottom end of the swing seat, and fourth protrusions are arranged opposite to the third protrusions at the bottom end of the housing. One end of the second elastic member is sleeved on the corresponding third protrusion, and the other end of the second elastic member is sleeved on the corresponding fourth protrusion.

5. A vibration motor according to claim 1, characterized in that, Rotating shafts are connected to the inner walls on both sides of the swing cavity, and the middle part of the swing seat is rotatably sleeved on the rotating shafts.

6. The vibration motor according to claim 5, characterized in that, The swing seat and the rotating shafts are rotatably connected through bearings.

7. A vibrating motor according to claim 1, wherein Yokes are symmetrically arranged on both sides of the bottom end of the swing seat, and the rotor is located between the two yokes.

8. A vibrating motor according to claim 7, characterized in that, An installation cavity is provided at the bottom end of the swing seat. An upper swing inlet for the rotor to pass through is provided on the front side wall of the installation cavity. Card slots are provided on both the left and right side walls of the installation cavity. Lower swing inlets for the yokes to pass through are provided on both the left half and the right half of the lower side wall of the installation cavity; The rotor and the two yokes are both arranged in the installation cavity. The two yokes are symmetrically arranged on the left and right sides of the installation cavity. A clamping block is provided on one side of the yoke, and the clamping block is clamped in the corresponding card slot, and the rotor is placed between the two yokes.

9. A vibrating motor according to claim 1, wherein, The housing is formed by splicing a front frame and a rear frame, and the top end of the stator is clamped between the bottom ends of the front frame and the rear frame.

10. A vibrating motor according to claim 1, wherein, A lever is connected to one side of the extended end of the swing seat.

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