A vibration motor

Abstract

This utility model discloses a vibration motor, including a base, a stator, two swing components, a first transmission component, a second transmission component, and two elastic components. The stator is fixedly mounted on the base. The swing components include an inverted U-shaped swing frame and a mover. The two ends of the swing frame are fixedly connected to the upper side wall of the base, and the mover is fixedly mounted in the middle of the swing frame. The first transmission component is fixedly mounted on the upper side wall of the middle part of one swing frame. The first transmission component is inverted U-shaped, and its two ends are fixedly connected to the upper side wall of the middle part of the swing frame. The second transmission component is fixedly mounted on the upper side wall of the middle part of the other swing frame, and it passes through the inner side of the U-shaped component at intervals. The two elastic components are symmetrically arranged on both sides of the second transmission component. When it is necessary to adjust the swing frequency to an ideal value for a specific application or optimization target, the elasticity coefficient can be changed by directly replacing the elastic components, thereby simplifying the fine-tuning process of the equipment's elasticity.

Description

Technical Field

[0001] This utility model relates to the field of motor technology, and in particular to a vibration motor. Background Technology

[0002] In existing magnetic levitation vibration motor designs, the core method for adjusting the left-right oscillation frequency of the motor typically relies on adjusting the elastic coefficient of the elastic arm supporting the oscillation frame to achieve the ideal oscillation state at the target speed. However, the plastic elastic arm, as a key elastic element, is generally manufactured using a one-piece injection molding process, and its inherent elastic coefficient is fixed upon completion of the part manufacturing. This fixed characteristic means that once its elastic coefficient is set, it cannot be easily and quickly changed during the production process or for different demand scenarios.

[0003] When the oscillation frequency needs to be adjusted to an ideal value for a specific application or optimization goal, the existing plastic elastic arm cannot be directly adjusted. Instead, the elastic coefficient must be changed by repeatedly modifying the injection mold and remanufacturing the part. This process is not only cumbersome and time-consuming, but also extremely difficult and inefficient in achieving the ideal oscillation frequency due to the inherent difficulty in accurately determining and fine-tuning the elastic coefficient of the plastic part. This severely restricts the product's development speed and adaptability. Utility Model Content

[0004] In view of this, the present invention provides a vibration motor to solve the problem that the elastic coefficient of the elastic arm of the existing vibration motor is inconvenient to adjust, which restricts the development speed and adaptability of the product.

[0005] To achieve one, some, or all of the above objectives, or other objectives, this utility model proposes a vibration motor, comprising a base, a stator, two swing assemblies, a first transmission member, a second transmission member, and two elastic members. The stator is fixedly mounted on the base. The two swing assemblies are symmetrically distributed on the upper sidewall of the base along the width direction of the base. Each swing assembly includes an inverted U-shaped swing frame and a mover. The two ends of the swing frame are fixedly connected to the upper sidewall of the base, and the mover is fixedly mounted on the inner side of the middle portion of the swing frame, wherein the magnetic poles of the two movers face opposite directions. The first transmission member is fixedly mounted on the upper sidewall of the middle portion of one swing frame. The first transmission member is inverted U-shaped, and its two ends are fixedly connected to the upper sidewall of the middle portion of the swing frame. The second transmission member is fixedly mounted on the upper sidewall of the middle portion of the other swing frame, and its portion passes through the inner side of the U-shaped member at intervals. The two elastic members are symmetrically arranged on both sides of the second transmission member. One end of the elastic member is detachably connected to the second transmission member, and the other end is detachably connected to the inner wall adjacent to the first transmission member.

[0006] Preferably, the second transmission component is I-shaped, with its bottom fixed to the upper side wall of the middle part of the corresponding swing frame, and connecting shafts provided on the upper side walls at both ends of its top. The upper ends of the connecting shafts are provided with screw holes. The upper side wall of the middle part of the first transmission component is provided with two connecting shafts, and the upper ends of the connecting shafts are provided with screw holes.

[0007] Preferably, the elastic element is a spring.

[0008] Preferably, the second transmission member has a second protrusion on its side wall, and the first transmission member has a first protrusion on its inner wall opposite to the side wall of the second transmission member. One end of the spring is sleeved on the first protrusion, and the other end of the spring is sleeved on the second protrusion.

[0009] Preferably, the swing assembly further includes a magnetic yoke, the middle part of the swing frame is provided with a front-opening fitting cavity, the inner side of the middle part of the swing frame is provided with a clearance opening that connects to the fitting cavity, the magnetic yoke is inserted into the fitting cavity, and the mover is fixedly connected to the lower side wall of the magnetic yoke through the clearance opening.

[0010] Preferably, the first transmission component, the middle part of the swing frame corresponding to the first transmission component, and the magnetic yoke corresponding to the first transmission component are fixedly connected by screws, and the second transmission component, the middle part of the swing frame corresponding to the second transmission component, and the magnetic yoke corresponding to the second transmission component are also fixedly connected by screws.

[0011] Preferably, a slot is provided on the upper side wall of the middle part of the swing frame, and the bottom of the first transmission component is engaged in the corresponding slot, and the bottom of the second transmission component is engaged in the corresponding slot.

[0012] Preferably, a limiting block is provided on the bottom wall of the slot, and a notch is provided at the bottom of the first transmission member for the limiting block to engage, and a notch is provided at the bottom of the second transmission member for the limiting block to engage.

[0013] Preferably, the swing frame includes a connecting seat and swing arms connected to both ends of the connecting seat. The swing arms include a first spring and a second spring that are parallel to each other and spaced apart. The left and right ends of the second spring are recessed toward their center to form an arc-shaped notch.

[0014] Preferably, the vibration motor further includes a bottom cover, and the base has an installation cavity in the middle that extends through its upper and lower side walls. The lower side wall of the base has a stop groove that connects to the bottom of the installation cavity. The stator is sleeved in the installation cavity. The bottom side wall of the stator has a stop block that engages in the stop groove. The bottom cover is fixedly closed on the lower side wall of the base, thus fixing the stator within the installation cavity.

[0015] Implementing the embodiments of this utility model will have the following beneficial effects:

[0016] With the aforementioned vibration motor, the stator is made of "mountain"-shaped silicon steel, and the mover is a permanent magnet with its magnetic poles distributed along the tangential direction of the swing frame. In operation, 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 poles at the end of the stator with the coil attached are opposite to the magnetic poles at the two outer ends. Therefore, one end of one mover will repel the outer end of the stator and attract the end with the coil attached, while the other end of the mover will attract the other outer end of the stator. This causes the middle part of the swing frame to swing in one direction. When the direction of the current in the coil changes, the magnetic poles at the end of the stator with the coil attached will swap with the magnetic poles at the two outer ends, thus driving the middle part of the swing frame to move in the opposite direction. By frequently changing the direction of the current in the coil, the swing frame is driven to swing at a high frequency. Furthermore, when the swing frame swings, due to the opposite orientation of the magnetic poles, the other mover will move in the opposite direction, causing the other swing frame to swing in the opposite direction. This drives the first and second transmission components to alternately squeeze the two elastic components. The two elastic components will continuously deform, store energy, release energy, and reset, providing assistance for the swing frame to swing, thereby increasing the torque of the swing frame, improving the efficiency of the motor, and balancing the forces on the two swing frames. This allows the two swing frames to transmit vibrations to the corresponding drive components, such as the blades of a hair clipper, through the first and second transmission components respectively. When it is necessary to adjust the swing frequency to the ideal value for a specific application or optimization goal, the elastic coefficient can be changed by directly replacing the elastic components, thereby simplifying the fine-tuning process of the equipment's elasticity, improving the adjustment efficiency of the swing frequency, and enhancing the product's development speed and adaptability. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] in:

[0019] Figure 1 This is a perspective view of the present utility model;

[0020] Figure 2 This is an exploded view of the entire utility model;

[0021] Figure 3 This is an exploded view of some components of this utility model.

[0022] In the diagram: 1. Base; 11. Mounting cavity; 12. Slot; 2. Stator; 21. Stop block; 3. Swing frame; 31. Connecting seat; 32. Swing arm; 321. First spring; 322. Second spring; 33. Insertion cavity; 34. Clearance opening; 35. Slot; 36. Limiting block; 4. Moving element; 51. First transmission component; 52. Second transmission component; 53. First protrusion; 54. Second protrusion; 6. Elastic component; 7. Magnetic yoke; 8. Bottom cover; a. Connecting shaft; b. Notch. Detailed Implementation

[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 art to which this invention pertains; the terminology used herein in the specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and accompanying drawings of this invention are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification, claims, or accompanying drawings of this invention are used to distinguish different objects, not to describe a particular order.

[0024] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of the present invention. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0025] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0026] like Figure 1-3As shown, a vibration motor includes a base 1, a stator 2, two swing assemblies, a first transmission member 51, a second transmission member 52, and two elastic members 6. The stator 2 is fixedly mounted on the base 1, and a coil (not shown in the figure) is sleeved on the stator 2. The two swing assemblies are symmetrically distributed on the upper side wall of the base 1 along the width direction. Each swing assembly includes an inverted U-shaped swing frame 3 and a mover 4. The two ends of the swing frame 3 are fixedly connected to the upper side wall of the base 1, and the mover 4 is fixedly mounted on the inner side of the middle part of the swing frame 3. The magnetic poles of the mover 4 face opposite directions. The first transmission member 51 is fixedly mounted on the upper side wall of the middle part of a swing frame 3. The first transmission member 51 is inverted U-shaped, and its two ends are fixedly connected to the upper side wall of the middle part of the swing frame 3. The second transmission member 52 is fixedly mounted on the upper side wall of the middle part of another swing frame 3. It passes through the inner side of the U-shaped member at intervals. Two elastic members 6 are symmetrically arranged on both sides of the second transmission member 52. One end of the elastic member 6 is detachably connected to the second transmission member 52, and the other end is detachably connected to the inner wall adjacent to the first transmission member 51.

[0027] Specifically, the plane containing the axis of the swing frame 3 is perpendicular to the width direction of the base 1; the swing frame 3 is made of elastic material, and in this embodiment, it is preferably made of elastic plastic.

[0028] In one embodiment, the mover 4 comprises two permanent magnets with opposite magnetic poles (not shown in the figures).

[0029] In one embodiment, grooves are provided on both sides of the second transmission member 52 and on both sides of the inner wall of the first transmission member 51, and the end of the elastic member 6 can be sleeved in the corresponding groove, thereby realizing the detachable installation of the elastic member 6 (not shown in the figure).

[0030] In one embodiment, magnets are provided on both sides of the second transmission member 52 and on both sides of the inner wall of the first transmission member 51, and magnetic attractors are provided at both ends of the elastic member 6. The elastic member 6 can be detachably installed between the inner walls of the second transmission member 52 and the first transmission member 51 by magnetic attraction (not shown in the figure).

[0031] In this embodiment, the first transmission member 51 bends downward toward the position of the second transmission member 52, and the second transmission member 52 bends downward toward the position of the first transmission member 51. The projections of the first transmission member 51 and the second transmission member 52 on the length direction of the base 1 intersect in an X shape, so that the tops of the two are staggered and symmetrically distributed with the base 1 as the center, which facilitates the connection of the cutter head respectively. At the same time, they are structurally close, which is conducive to stable transmission.

[0032] In this embodiment, the stator 2 is a "mountain"-shaped silicon steel, and the mover 4 is a permanent magnet. The magnetic poles of the mover 4 are distributed along the tangential direction of the swing frame 3. 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 2. At this time, the magnetic poles at the end of the stator 2 with the coil are opposite to the magnetic poles at the outer ends. Therefore, one end of one mover 4 will repel the outer end of the stator 2 and attract the end of the stator 2 with the coil, while the other end of the mover 4 will attract the other outer end of the stator 2. This causes the middle part of the swing frame 3 to swing in one direction. When the direction of the current in the coil changes, the magnetic poles at the end of the stator 2 with the coil and the magnetic poles at the outer ends will be reversed, thus driving the middle part of the swing frame 3 to move in the opposite direction. By frequently changing the direction of the current in the coil, the swing frame 3 swings at a high frequency. When frame 3 swings, due to the opposite orientation of the magnetic poles, another mover 4 will move in the opposite direction, driving the other swing frame 3 to swing in the opposite direction. This drives the first transmission component 51 and the second transmission component 52 to alternately squeeze the two elastic components 6. The two elastic components 6 will continuously deform, store energy, release energy, and reset, providing assistance for the swing of frame 3 to increase the torque of frame 3, thereby improving the efficiency of the motor and balancing the forces on the two swing frames 3. This allows the two swing frames 3 to transmit vibrations to the corresponding drive components, such as the blade of a hair clipper, through the first transmission component 51 and the second transmission component 52 respectively. When it is necessary to adjust the swing frequency to the ideal value for a specific application or optimization goal, the elastic coefficient can be changed by directly replacing the elastic component 6, thereby simplifying the fine-tuning process of the equipment's elasticity, improving the adjustment efficiency of the swing frequency, and enhancing the product's development speed and adaptability.

[0033] Furthermore, the second transmission component 52 is I-shaped, with its bottom fixed to the upper side wall of the corresponding swing frame 3 in the middle. Both ends of its top upper side wall are provided with connecting shafts a, and the upper ends of the connecting shafts a are provided with threaded holes. The upper side wall of the middle of the first transmission component 51 is provided with two connecting shafts a, and the upper ends of the connecting shafts a are provided with threaded holes. The upper side wall of the middle of the first transmission component 51 and the top of the second transmission component 52 can be threadedly fixed to the drive components such as the cutter head through the connecting shafts a.

[0034] Furthermore, the elastic element 6 is a spring, which has good elasticity and is easy to use repeatedly.

[0035] Furthermore, a second protrusion 54 is provided on the side wall of the second transmission member 52, and a first protrusion 53 is provided on the inner wall opposite to the side wall of the first transmission member 51 and the second transmission member 52. One end of the spring is sleeved on the first protrusion 53, and the other end of the spring is sleeved on the second protrusion 54, so as to position the two ends of the spring through the first protrusion 53 and the second protrusion 54, improve the installation stability of the spring, ensure the stable transmission between the first transmission member 51 and the second transmission member 52, and facilitate the disassembly of the spring.

[0036] Furthermore, the swing assembly also includes a magnetic yoke 7. The swing frame 3 has a front-opening mounting cavity 33 in the middle. The swing frame 3 has a clearance opening 34 on the inner side of the middle, which connects to the mounting cavity 33. The magnetic yoke 7 is inserted into the mounting cavity 33. The mover 4 is bonded and fixed to the lower side wall of the magnetic yoke 7 through the clearance opening 34, so as to enhance the local magnetic field by focusing the magnetic field through the magnetic yoke 7, so that the swing frame 3 swings more accurately when the magnetic pole of the stator 2 changes.

[0037] Specifically, the front side of the swing frame 3 refers to the side where the two swing frames 3 are facing away from each other, and the rear side of the swing frame 3 refers to the side where the two swing frames 3 are facing each other.

[0038] Furthermore, the first transmission component 51, the middle part of the swing frame 3 corresponding to the first transmission component 51, and the magnetic yoke 7 corresponding to the first transmission component 51 are fixed together by screws. Similarly, the second transmission component 52, the middle part of the swing frame 3 corresponding to the second transmission component 52, and the magnetic yoke 7 corresponding to the second transmission component 52 are fixed together by screws. This simplifies the connection operation of the first transmission component 51, the second transmission component 52, the corresponding magnetic yoke 7, and the mover 4, making the assembly of the vibration motor more convenient and efficient.

[0039] Furthermore, a slot 35 is provided on the upper side wall of the middle part of the swing frame 3. The bottom of the first transmission member 51 is engaged in the corresponding slot 35, and the bottom of the second transmission member 52 is engaged in the corresponding slot 35. The slot 35 further restricts the movement of the first transmission member 51 in the tangential direction of the corresponding swing frame 3, and restricts the movement of the second transmission member 52 in the tangential direction of the corresponding swing frame 3, thereby improving the connection strength between the swing frame 3 and the corresponding first transmission member 51 or second transmission member 52 when swinging, so that the two can transmit power stably.

[0040] Furthermore, the slot 35 is connected to the rear side of the swing frame 3. A limiting block 36 is provided on the bottom wall of the slot 35. The limiting block 36 is located near the rear side of the swing frame 3. The bottom of the first transmission member 51 is provided with a notch b that can be engaged by the limiting block 36. The bottom of the second transmission member 52 is provided with a notch b that can be engaged by the limiting block 36. While reducing the material used in the slot 35, the limiting block 36 restricts the first transmission member 51 and the second transmission member 52 from moving laterally away from the corresponding slot 35. At the same time, it increases the number of connection points between the first transmission member 51, the second transmission member 52 and the corresponding swing frame 3, thereby improving the connection stability.

[0041] Furthermore, the swing frame 3 includes a connecting seat 31 and swing arms 32 connected to both ends of the connecting seat 31. The swing arms 32 include a first spring plate 321 and a second spring plate 322 that are parallel to each other and spaced apart. The left and right ends of the second spring plate 322 are recessed towards its center to form an arc-shaped notch. When the mover 4 moves laterally under the action of the stator 2, it will drive the connecting seat 31 to move laterally, and then swing through the swing arms 32. Combined with the first spring plate 321 and the second spring plate 322, the effect of the double swing arms 32 is achieved, which improves the elasticity of the swing frame 3 when it swings. At the same time, the cross-sectional area of ​​the middle part of the second spring plate 322 is reduced, making it easier to bend and deform, thus improving the rebound assist effect.

[0042] Furthermore, the vibratory motor also includes a bottom cover 8. The base 1 has an installation cavity 11 in the middle that runs through its upper and lower side walls. The lower side wall of the base 1 has a stop groove 12 that connects to the bottom of the installation cavity 11. The stator 2 is fitted into the installation cavity 11. The bottom side wall of the stator 2 has a stop block 21 that is engaged in the stop groove 12. The bottom cover 8 is fixed to the lower side wall of the base 1 by screws, thus fixing the stator 2 within the installation cavity 11. This allows the stator 2 to be quickly positioned within the installation cavity 11 by the engagement and limiting of the stop block 21, thereby improving the installation accuracy and efficiency of the stator 2.

[0043] Obviously, the embodiments described above are only some embodiments of this utility model, not all embodiments. The accompanying drawings show preferred embodiments of this utility model, but do not limit the patent scope of this utility model. This utility model can be implemented in many different forms; rather, the purpose of providing these embodiments is to provide a more thorough and comprehensive understanding of the disclosure of this utility model. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments, or make equivalent substitutions for some of the technical features. Any equivalent structures made using the content of this utility model specification and drawings, directly or indirectly applied to other related technical fields, are similarly within the patent protection scope of this utility model.

Claims

1. A vibration motor, characterized in that, include: The system comprises a base, a stator, two swing assemblies, a first transmission component, a second transmission component, and two elastic components. The stator is fixedly mounted on the base, and the two swing components are symmetrically distributed on the upper side wall of the base along the width direction of the base. The swing assembly includes an inverted U-shaped swing frame and a mover. The two ends of the swing frame are fixedly connected to the upper side wall of the base, and the mover is fixedly disposed on the inner side of the middle part of the swing frame, wherein the magnetic poles of the two movers face opposite directions. The first transmission component is fixedly mounted on the upper side wall of the middle part of a swing frame. The first transmission component is inverted U-shaped, and its two ends are fixedly connected to the upper side wall of the middle part of the swing frame. The second transmission component is fixed to the upper side wall of the middle part of another swing frame, and it passes through the inner side of the U-shaped component at intervals. The two elastic elements are symmetrically arranged on both sides of the second transmission element. One end of the elastic element is detachably connected to the second transmission element, and the other end is detachably connected to the inner wall adjacent to the first transmission element.

2. A vibration motor according to claim 1, characterized in that, The second transmission component is I-shaped, with its bottom fixed to the upper side wall of the middle part of the corresponding swing frame. Both ends of its top upper side wall are provided with connecting shafts, and the upper ends of the connecting shafts are provided with screw holes. The upper side wall of the middle part of the first transmission component is provided with two connecting shafts, and the upper ends of the connecting shafts are provided with screw holes.

3. A vibration motor according to claim 1, characterized in that, The elastic element is a spring.

4. A vibration motor according to claim 3, characterized in that, The second transmission component has a second protrusion on its side wall, and the first transmission component has a first protrusion on its inner wall opposite to the side wall of the second transmission component. One end of the spring is sleeved on the first protrusion, and the other end of the spring is sleeved on the second protrusion.

5. A vibration motor according to claim 1, characterized in that, The swing assembly also includes a magnetic yoke. The middle part of the swing frame has a front-opening mounting cavity. The inner side of the middle part of the swing frame has a clearance opening that connects to the mounting cavity. The magnetic yoke is inserted into the mounting cavity. The mover is fixed to the lower side wall of the magnetic yoke through the clearance opening.

6. A vibration motor according to claim 5, characterized in that, The first transmission component, the middle part of the swing frame corresponding to the first transmission component, and the magnetic yoke corresponding to the first transmission component are fixed together by screws. The second transmission component, the middle part of the swing frame corresponding to the second transmission component, and the magnetic yoke corresponding to the second transmission component are fixed together by screws.

7. A vibration motor according to claim 1, characterized in that, A slot is provided on the upper side wall of the middle part of the swing frame. The bottom of the first transmission component is engaged in the corresponding slot, and the bottom of the second transmission component is engaged in the corresponding slot.

8. A vibration motor according to claim 7, characterized in that, The bottom wall of the slot is provided with a limiting block, the bottom of the first transmission component is provided with a notch for the limiting block to engage, and the bottom of the second transmission component is provided with a notch for the limiting block to engage.

9. A vibration motor according to claim 1, characterized in that, The swing frame includes a connecting seat and swing arms connected to both ends of the connecting seat. The swing arms include a first spring and a second spring that are parallel to each other and spaced apart. The left and right ends of the second spring are recessed toward their center to form an arc-shaped notch.

10. A vibration motor according to claim 1, characterized in that, The vibration motor also includes a bottom cover. The base has an installation cavity in the middle that runs through its upper and lower side walls. The lower side wall of the base has a groove that connects to the bottom of the installation cavity. The stator is fitted into the installation cavity. The bottom side wall of the stator has a stop block that engages with the groove. The bottom cover is fixedly fitted onto the lower side wall of the base, thus fixing the stator within the installation cavity.

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