Reciprocating deflection electromagnetic structure motor

Abstract

The invention belongs to the technical field of energy-saving household appliance spare and accessory parts, and particularly relates to a reciprocating deflection electromagnetic structure motor. Comprising a mounting shell, the mounting shell is rotatably connected with an arc-shaped rotor, the arc-shaped rotor is fixedly connected with a rotor magnet, the arc-shaped rotor is fixedly connected with an output shaft, a magnetic conductive iron core is fixedly connected in the mounting shell, the magnetic conductive iron core is fixedly connected with two symmetrically distributed coils, and the magnetic conductive iron core is in a U shape. The two coils are respectively arranged on two vertical parts of the U-shaped magnetic conductive iron core, and the arc-shaped rotor is fixedly connected with a magnetic shielding cover. Force for driving the arc-shaped rotor to swing is applied to the rotor magnet through the U-shaped magnets with continuously and alternately changed magnetic poles, and the moment of a magnetic field borne by the arc-shaped rotor is increased by enabling the included angle between the stress direction of the rotor magnet and the connecting line between the stress point of the rotor magnet and the swing center point of the arc-shaped rotor to be always larger than 45 degrees. And the utilization efficiency of the device on magnetic energy is further improved.

Description

Technical Field

[0001] This invention relates to the field of energy-saving household appliance parts technology, and in particular to a reciprocating oscillating electromagnetic structure motor. Background Technology

[0002] The oscillating motor is a new type of electromagnetic structure motor. The oscillating motor controls the output shaft of the motor to oscillate back and forth through an electromagnetic structure, thereby outputting a linear reciprocating vibration force. This type of motor is mainly used to replace the brushed DC vibration motors currently used in shavers and electric clippers. Compared with vibration motors, oscillating motors have advantages such as longer motor life, higher energy conversion efficiency, increased output torque, and green energy saving.

[0003] A prior art document with application number 202320520451 discloses a yaw motor device, comprising a housing. The device is characterized by a yaw rotor rotatably connected to the housing within the housing, a rotor core within the rotor, an output shaft at one end of the rotor, and symmetrically arranged first and second magnets at the opposite end of the rotor. A stator core is fixedly mounted on the housing, and the stator core has pole shoes facing and spaced from the first and second magnets, with the first and second magnets having different magnetic pole faces towards the pole shoes. A coil is mounted on the pole shoes. When alternating currents are applied to the coils, the pole shoes interact with the first and second magnets to drive the yaw rotor to reciprocate.

[0004] Although this device achieves a structure where the motor shaft does not rotate but directly yaws by alternately attracting two magnets with different magnetic poles through the magnetic poles of the coil, its magnetic field distribution has significant design flaws. Each time the electromagnetic coil is energized, it can only attract one magnet through magnetic attraction. The direction of the magnetic repulsion force of the electromagnetic coil on the other magnet is small because the angle between the force point of the magnet and the line connecting the yaw rotor's oscillation center is small. This results in a short effective lever arm of the magnetic repulsion force, which is difficult to act on to drive the yaw rotor to oscillate. Therefore, the device still has defects such as low torque and low energy utilization during vibration. Summary of the Invention

[0005] In order to overcome the shortcomings of existing devices in terms of magnetic field distribution and low energy utilization of electromagnetic force, the purpose of this invention is to provide a reciprocating oscillating electromagnetic structure motor.

[0006] The technical solution is as follows: A reciprocating oscillating electromagnetic structure motor includes a mounting housing, an arc-shaped rotor rotatably connected to the mounting housing, a rotor magnet fixedly connected to the arc-shaped rotor, an output shaft fixedly connected to the side of the arc-shaped rotor away from the rotor magnet, a magnetic core fixedly connected inside the mounting housing, and two symmetrically distributed coils fixedly connected to the magnetic core. The magnetic core is U-shaped, and the two coils are respectively located on two vertical parts of the U-shape of the magnetic core. The rotor magnet is located on the side of the arc-shaped rotor closer to the magnetic core. When the two coils are supplied with currents of opposite directions and alternating changes, the two coils and the magnetic core form a U-shaped magnet with continuously changing magnetic poles. The U-shaped magnet drives the rotor magnet to drive the arc-shaped rotor to oscillate reciprocally through the continuously alternating magnetic poles. A magnetic shield is fixedly connected to the arc-shaped rotor to shield the magnetic poles on one side of the rotor magnet.

[0007] As an improvement to the above solution, an installation plate is provided inside the mounting shell, the installation plate is rotatably connected to the arc-shaped rotor, and symmetrically distributed force-enhancing elastic elements are fixed between the installation plate and the arc-shaped rotor.

[0008] As an improvement to the above solution, it also includes two symmetrically distributed sliding rods, both of which are slidably connected to the mounting shell. The mounting plate is rotatably connected to the mounting shell. Each sliding rod is provided with a pressing part, which is used to press the mounting plate to swing. A first magnet is fixedly connected to each sliding rod. The magnetic poles of the two first magnets are the same on the side near the magnetic core. A second magnet is fixedly connected to the mounting plate. The second magnet and the side of the rotor magnet away from the magnetic core are magnetically attracted to each other. The mounting shell is provided with symmetrically distributed limiting components, which are used to limit the movement of adjacent first magnets.

[0009] As an improvement to the above solution, the limiting component includes a swing plate, which is fixedly connected to the mounting shell. The swing plate is provided with an elastic part, and the mounting shell is provided with a limiting part. The limiting part is used to restrict the deformation of adjacent elastic parts. The swing plate is fixedly connected with a baffle, which is used to limit the adjacent first magnet. The arc-shaped rotor causes the elastic part to deform by squeezing the swing plate.

[0010] As an improvement to the above solution, the side of the arc-shaped rotor near the magnetic core and the side of the rotor magnet near the magnetic core together form a complete arc surface. The side of the magnetic core near the arc-shaped rotor is provided with two arc surfaces, and the centers of the circles containing the two arc surfaces on the magnetic core coincide. The radius of the circle containing the arc surface on the magnetic core is larger than the radius of the circle containing the arc surface on the arc-shaped rotor.

[0011] As an improvement to the above solution, the swing plate is provided with a wear-resistant plate, the wear-resistant plate has a smooth surface, and the swing plate contacts the arc-shaped rotor through the wear-resistant plate.

[0012] As an improvement to the above solution, the connection between the force-enhancing elastic element and the arc-shaped rotor is located on the side of the arc-shaped rotor away from its own rotation center.

[0013] As an improvement to the above solution, the length of the magnetic shield is less than the length of the rotor magnet, but greater than half the length of the rotor magnet.

[0014] As an improvement to the above scheme, the line connecting the two magnetic poles on the second magnet is parallel to the swing axis of the arc-shaped rotor.

[0015] As an improvement to the above solution, there is damping between the mounting plate and the arc-shaped rotor to reduce the speed at which the two force-enhancing elastic elements push the mounting plate to swing back and forth relative to the arc-shaped rotor.

[0016] The beneficial effects of this invention compared to the prior art are as follows: This invention applies a force to the rotor magnet by a U-shaped magnet with continuously alternating magnetic poles, which drives the arc-shaped rotor to swing. By ensuring that the angle between the direction of the force on the rotor magnet and the line connecting the point of force on the rotor magnet and the center point of the swing of the arc-shaped rotor is always greater than 45°, the torque of the magnetic field on the arc-shaped rotor is increased, thereby improving the utilization efficiency of magnetic energy of this device.

[0017] This invention uses a magnetic shield to block one side of the rotor magnet's magnetic pole, thereby reducing the magnetic force on one of the magnetic poles of the rotor magnet. This reduces the degree of mutual force between the two magnetic poles in the same magnetic field, allowing the rotor magnet to drive the arc-shaped rotor to swing more smoothly.

[0018] This invention adds two force-enhancing elastic elements to increase the force on the arc-shaped rotor during its initial oscillation, thereby rapidly increasing the oscillation speed of the arc-shaped rotor during the initial oscillation process and making the oscillation speed of the arc-shaped rotor more uniform.

[0019] This invention causes the mounting plate to swing along with the arc-shaped rotor. Only when the arc-shaped rotor swings to near its limit does the two force-enhancing elastic elements provide a force that causes the arc-shaped rotor to decelerate rapidly and swing in the opposite direction. This increases the initial force on the arc-shaped rotor during its swing, thus rapidly increasing its speed when it begins to swing. It also reduces the resistance to the arc-shaped rotor's swing before it reaches its limit position, making the swing speed and the force on the arc-shaped rotor more uniform when it is not close to its limit position. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is an exploded view of the mounting shell and arc-shaped rotor of the present invention; Figure 3 This is a three-dimensional structural diagram of the magnetic core and coil of the present invention; Figure 4 This is a cross-sectional view of the mounting shell of the present invention; Figure 5 This is a three-dimensional structural diagram of the arc-shaped rotor and mounting plate of the present invention; Figure 6 This is a schematic diagram showing the state of the arc-shaped rotor and rotor magnet after oscillation according to the present invention.

[0021] The labels in the diagram are as follows: 1. Mounting shell, 2. Arc-shaped rotor, 3. Rotor magnet, 4. Output shaft, 5. Magnetic core, 6. Coil, 7. Magnetic shield, 8. Mounting plate, 9. Force-increasing elastic element, 10. Sliding rod, 11. Extrusion part, 12. First magnet, 13. Second magnet, 14. Swing plate, 15. Elastic part, 16. Limiting part, 17. Baffle, 18. Wear-resistant plate. Detailed Implementation

[0022] The above solution will be further described below with reference to specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of this application. The implementation conditions used in the embodiments can be further adjusted according to the specific needs of the manufacturer.

[0023] Example 1: A reciprocating oscillating electromagnetic structure motor is proposed to address the shortcomings of existing devices, such as defects in magnetic field distribution and low energy utilization of electromagnetic force.

[0024] Reference Figures 1-6 The device includes a mounting housing 1, an arc-shaped rotor 2 rotatably connected inside the mounting housing 1, a rotor magnet 3 fixed to the front side of the arc-shaped rotor 2, an output shaft 4 fixed to the rear side of the arc-shaped rotor 2, a magnetic core 5 fixed to the front side inside the mounting housing 1, two coils 6 symmetrically distributed on the magnetic core 5 fixed to the magnetic core 5, the magnetic core 5 is U-shaped with the U-shaped opening facing the rear, the two coils 6 are respectively located on the left and right vertical parts of the U-shaped magnetic core 5, the rotor magnet 3 is located between the two coils 6 in the initial unenergized state, and a magnetic shield 7 fixed to the arc-shaped rotor 2, the magnetic shield 7 is located at the rear of the rotor magnet 3, the magnetic shield 7 is used to shield the magnetic poles on the rear side of the rotor magnet 3.

[0025] Reference Figure 5 and Figure 6 The length of the magnetic shield 7 is less than the length of the rotor magnet 3, but greater than half the length of the rotor magnet 3. In this scheme, the length of the magnetic shield 7 is greater than half the length of the rotor magnet 3 to ensure that the magnetic shield 7 shields the magnetic poles on the rear side of the rotor magnet 3 and reduces the influence of the U-shaped magnet magnetic field on the rotor magnet 3.

[0026] The above setup enables the magnetic poles of the two coils 6 to always be opposite in direction when currents in opposite directions are passed through them. The two coils 6 and the magnetic core 5 form a U-shaped magnet, with the N and S poles of the U-shaped magnet located at both ends of its U-shaped opening. Therefore, the magnetic field of the U-shaped magnet is close to the parallel line connecting the two ends of the opening. By alternately changing the direction of the current in the two coils 6, the magnetic poles of the U-shaped magnet continuously change. The U-shaped magnet drives the rotor magnet 3 to reciprocate through the continuously changing magnetic poles. The left and right movement causes the arc-shaped rotor 2 to swing back and forth. During this process, because the magnetic field generated by the U-shaped magnet at the U-shaped opening is a magnetic field in the left and right direction, it can effectively drive the rotor magnet 3 to swing. Moreover, the magnetic shield 7 blocks the magnetic pole on the rear side of the rotor magnet 3, so that the magnetic field acts more on the single magnetic pole on the front side of the rotor magnet 3. Compared with the existing device, the angle between the direction of the force on the rotor magnet and the line connecting the point of force on the rotor magnet and the swing center point of the arc-shaped rotor is always greater than 45°. Therefore, the torque on the arc-shaped rotor 2 is greater.

[0027] Reference Figure 6 The front side of the arc-shaped rotor 2 and the front side of the rotor magnet 3 together form a complete arc surface. The rear side of the magnetic core 5 is provided with two arc surfaces, and the centers of the circles containing the two arc surfaces on the magnetic core 5 coincide. The radius of the circle containing the arc surface on the rear side of the magnetic core 5 is larger than the radius of the circle containing the arc surface on the front side of the arc-shaped rotor 2. Neither the arc-shaped rotor 2 nor the rotor magnet 3 contacts the magnetic core 5 to reduce the resistance encountered by the arc-shaped rotor 2 during its swing. The arc-shaped rotor 2 is made of non-magnetic material. During the swing of the arc-shaped rotor 2, there is no magnetic damping between the arc-shaped rotor 2 and the U-shaped magnet, which increases the smoothness of the swing of the arc-shaped rotor 2 and reduces the internal energy lost during the operation of the device.

[0028] Reference Figures 2-6 An installation plate 8 is provided inside the installation housing 1. The installation plate 8 is rotatably connected to the arc-shaped rotor 2. Two force-increasing elastic elements 9, which are springs, are fixedly connected between the installation plate 8 and the arc-shaped rotor 2 and are symmetrically distributed on the left and right sides.

[0029] Reference Figure 5 and Figure 6 The connection between the force-enhancing elastic element 9 and the arc-shaped rotor 2 is located on the side of the arc-shaped rotor 2 away from the swing center of the arc-shaped rotor 2, which is used to increase the torque on the arc-shaped rotor 2 when the force-enhancing elastic element 9 pushes the arc-shaped rotor 2.

[0030] The above setup enables the arc rotor 2 and rotor magnet 3 to swing to one side under the influence of the U-shaped magnet (taking leftward swing as an example, the arc rotor 2 swings clockwise from a top-down perspective). The arc rotor 2 continuously compresses the left-side force-amplifying elastic element 9 and stretches the right-side force-amplifying elastic element 9. Both force-amplifying elastic elements 9 store force. When the magnetic pole of the U-shaped magnet changes, the two force-amplifying elastic elements 9 release their elastic force, together with the U-shaped magnet, to push the arc rotor 2 to swing to the right (counterclockwise from a top-down perspective). The acceleration of the arc rotor 2 at the beginning of its swing is increased by the two force-amplifying elastic elements 9, thereby making the arc rotor 2 have a higher limit speed and greater torque during the swing process.

[0031] The working principle of the above settings is as follows: Workers used this device to replace existing brushed motors with eccentric structures. The device was installed inside a household appliance. To more clearly illustrate the working principle, the front side of rotor magnet 3 was designated as the N pole. The device was initially in a non-energized state as follows: Figure 3 and Figure 4 As shown, the output shaft 4 is located directly behind the rotor magnet 3.

[0032] When a user uses this household appliance, the appliance supplies opposite and alternating currents to the two coils 6 of this device, so as to... Figure 6 For clarity, when the current is first applied, the upper side of the left coil 6 is the S pole, and the upper side of the right coil 6 is the N pole. Therefore, the left side of the U-shaped magnet is the S pole, and the right side is the N pole, generating a magnetic field pointing to the left. The rotor magnet 3 experiences a force pointing to the left. At this time, the left side of the U-shaped magnet applies a magnetic attraction force to the rotor magnet 3, and the right side of the U-shaped magnet applies a magnetic repulsion force to the rotor magnet 3, causing the rotor magnet 3 to drive the arc-shaped rotor 2 to deflect clockwise (from a top-down perspective) until the arc-shaped rotor 2 swings to... Figure 6 As shown, during the swinging process of the arc-shaped rotor 2, the left force-increasing elastic element 9 compresses and stores force, while the right force-increasing elastic element 9 stretches and stores force.

[0033] After a fixed period of time (i.e., the time for each current commutation is fixed), the direction of the current changes. The upper side of the left coil 6 becomes the N pole, and the upper side of the right coil 6 becomes the S pole. At this time, the left side of the U-shaped magnet is the N pole, and the right side is the S pole, generating a magnetic field pointing to the right. The rotor magnet 3 experiences a force pointing to the right, causing the rotor magnet 3 to drive the arc-shaped rotor 2 to deflect counterclockwise (from a top-down perspective). When the rotor magnet 3 swings to... Figure 4 Before the initial unpowered state, the rotor magnet 3 swings rapidly to the right under the action of the thrust of the left-side force-amplifying elastic element 9 and the pull of the right-side force-amplifying elastic element 9. When the rotor magnet 3 passes through Figure 4 Initially unpowered, as the rotor continues to swing to the right, the left-side force-increasing elastic element 9 stretches and stores energy, while the right-side force-increasing elastic element 9 compresses and stores energy, until the rotor magnet 3 swings to the position of... Figure 6 The states shown are reversed, and then the direction of the current changes alternately, causing the magnetic field of the U-shaped magnet to change alternately. The rotor magnet 3 drives the arc-shaped rotor 2 to swing back and forth alternately.

[0034] During the reciprocating oscillation of the arc-shaped rotor 2, it drives the output shaft 4 to reciprocate oscillate, and the output shaft 4 outputs the reciprocating oscillation power outward.

[0035] When the user turns off the electrical device and stops supplying power to the device, the two coils 6 no longer generate a magnetic field, and the arc-shaped rotor 2 returns to its initial unpowered state under the action of the two force-increasing elastic elements 9.

[0036] Example 2: Compared with the reciprocating oscillating electromagnetic structure motor proposed in Example 1, the working mode of the two force-increasing elastic elements 9 is further optimized, so that the force-increasing elastic elements 9 only start to store force when the arc rotor 2 swings to near the limit position, thereby reducing the resistance of the force-increasing elastic elements 9 to the swinging process of the arc rotor 2.

[0037] In Embodiment 1, the mounting plate 8 and the mounting shell 1 are considered to be fixedly connected, while in this embodiment, the mounting plate 8 and the mounting shell 1 are rotatably connected.

[0038] Reference Figures 2-6 It also includes two symmetrically distributed sliding rods 10, which are slidably connected to the mounting shell 1. A pressing part 11 is provided in the middle of each sliding rod 10, used to press the mounting plate 8, causing it to swing. A first magnet 12 is fixedly connected to each sliding rod 10. The magnetic poles of the two first magnets 12 facing the adjacent coil 6 are the same (assuming the side of the first magnet 12 facing the coil 6 is the N pole). The magnetic shielding cover 7 does not completely block the magnetic poles on the rear side of the rotor magnet 3, such as... Figure 6 As shown, the exposed part of the magnetic pole on the rear side of the rotor magnet 3 is small, and the resistance applied to the reciprocating swing of the arc-shaped rotor 2 is negligible. The mounting plate 8 is fixed with the second magnet 13, and the second magnet 13 and the rear side of the rotor magnet 3 are magnetically attracted to each other, so that the arc-shaped rotor 2 can drive the mounting plate 8 to swing together through the rotor magnet 3 and the second magnet 13. The mounting shell 1 is provided with limiting components that are symmetrically distributed on the left and right and are used to limit the adjacent first magnets 12 respectively.

[0039] The above configuration enables the arc rotor 2 to swing during its oscillation, especially when it is not close to the left and right extreme positions. The arc rotor 2 drives the mounting plate 8 to swing together through the rotor magnet 3 and the second magnet 13. Therefore, the two force-enhancing elastic elements 9 do not apply oscillation resistance to the arc rotor 2 during this process. When the arc rotor 2 swings to the left and right extreme positions, the two force-enhancing elastic elements 9 begin to perform the reciprocating compression (stretching) force-accumulating action in the above embodiment, applying resistance to the arc rotor 2, causing the arc rotor 2 to decelerate and stop swinging. When the U-shaped magnet changes its magnetic pole, the two force-enhancing elastic elements 9 quickly release the stored elastic force, increasing the force on the arc rotor 2 when it initially swings.

[0040] Reference Figures 2-6 The limiting assembly includes a swing plate 14, which is fixed to the mounting housing 1 by a pin. The swing plate 14 is provided with an elastic part 15, and the mounting housing 1 is provided with a limiting part 16. The limiting part 16 is used to limit the deformation range of adjacent elastic parts 15. Figure 4 For example, the limiting part 16 prevents the adjacent elastic part 15 from deforming towards the side closer to the arc-shaped rotor 2. Both sides of the two swing plates 14 are fixed with baffles 17. The baffles 17 are used to limit the adjacent first magnet 12. The arc-shaped rotor 2 causes the elastic part 15 to deform by squeezing the swing plates 14, thereby causing the baffles 17 to move and gradually release the limitation on the adjacent first magnet 12.

[0041] Reference Figure 2 and Figure 5 Wear-resistant plates 18 are provided on opposite sides of the two swing plates 14. The wear-resistant plates 18 have smooth surfaces and can be made of ultra-high molecular weight polyethylene or thin sheets sprayed with a high wear-resistant coating. The swing plates 14 contact the arc-shaped rotor 2 through the wear-resistant plates 18 to reduce the friction when the arc-shaped rotor 2 squeezes the wear-resistant plates 18 on the swing plates 14.

[0042] Reference Figure 3 The line connecting the two magnetic poles on the second magnet 13 is parallel to the swing axis of the arc rotor 2, that is, the magnetic poles of the second magnet 13 are distributed vertically. When the second magnet 13 swings with the arc rotor 2 and the rotor magnet 3, the magnetic attraction and repulsion forces of the U-shaped magnet and the same first magnet 12 cancel each other out. Therefore, the magnetic force of the rotor magnet 3 on the second magnet 13 is greater than the magnetic force exerted on the second magnet 13 by the U-shaped magnet and the first magnet 12, thereby reducing the interference of the magnetic field other than the rotor magnet 3 on the second magnet 13.

[0043] Reference Figure 2 and Figure 5 There is damping between the mounting plate 8 and the arc-shaped rotor 2, which is used to reduce the speed at which the two force-increasing elastic elements 9 push the mounting plate 8 to swing back and forth relative to the arc-shaped rotor 2.

[0044] The above configuration enables the following: when the magnetic poles of the U-shaped magnet change and attract the first magnet 12 on one side, the baffle 17 on that side reduces the magnetic attraction force on the first magnet 12 by blocking the side of the first magnet 12 facing the U-shaped magnet. At the same time, the baffle 17 limits the first magnet 12 by blocking it, preventing the sliding rod 10 from moving. The mounting plate 8 swings together with the arc-shaped rotor 2. When the arc-shaped rotor 2 swings to near the limit position on that side, the arc-shaped rotor 2 squeezes the wear-resistant plate 18 on the swing plate 14, causing the elastic part 15 to deform. The baffle 17 and the swing plate 14 swing around the deformed position of the elastic part 15, thereby releasing the baffle 17 from limiting the adjacent first magnet 12. The first magnet 12 drives the sliding rod 10 to move towards the U-shaped magnet and squeezes the mounting plate 8 to swing. The two force-enhancing elastic elements 9 on the mounting plate 8 are controlled to complete the work in the above embodiment. The magnetic force between the coil 6 and the first magnet 12 is greater than the magnetic force between the rotor magnet 3 and the second magnet 13.

[0045] The working principle of the above settings is as follows: In the initial state of no power (e.g.) Figure 4 As shown), both sliding rods 10 are at their respective extreme positions at the rear of their strokes. The first magnet 12 is not in contact with the adjacent baffle 17. The rotor magnet 3 and the second magnet 13 are aligned with each other. Taking the first current flow through the two coils 6 as an example, the rear side of the left coil 6 is the S pole, and the rear side of the right coil 6 is the N pole. At this time, the left first magnet 12 is subjected to magnetic attraction, and the right first magnet 12 is subjected to magnetic repulsion. At this time, the left first magnet 12 and the sliding rod 10 move forward to contact the baffle 17 and are limited by the adjacent baffle 17. The right first magnet 12 and the sliding rod 10 remain in the initial unenergized state. During the swing of the arc rotor 2, the rotor magnet 3 and the second magnet 13 drive the mounting plate 8 and the two force-amplifying elastic members 9 to swing counterclockwise together (from the top to the bottom view). The two force-amplifying elastic members 9 do not apply any force to the arc rotor 2 to hinder the swing.

[0046] When the arc-shaped rotor 2 swings to contact the wear-resistant plate 18, the arc-shaped rotor 2 squeezes the left wear-resistant plate 18 and the swing plate 14, causing the elastic part 15 to deform. The baffle 17 and the swing plate 14 swing to the left, and the left elastic part 15 compresses and stores force. During the swing of the left baffle 17, when the left baffle 17 releases the restriction on the adjacent first magnet 12, the first magnet 12 drives the sliding rod 10 and the squeezing part 11 to move together towards the U-shaped magnet. The squeezing part 11 contacts the mounting plate 8 and squeezes the mounting plate 8, causing the mounting plate 8 to swing counterclockwise (from the top to the bottom view). The rotor magnet 3 and the second magnet 13 gradually rotate and misalign. The two force-enhancing elastic members 9 on the mounting plate 8 complete the corresponding actions according to the actions in Embodiment 1, applying resistance to the arc-shaped rotor 2 to hinder the swing, causing the arc-shaped rotor 2 to decelerate and stop swinging.

[0047] When the U-shaped magnet changes its magnetic pole, the two force-amplifying elastic elements 9 simultaneously and rapidly release their stored elastic force, increasing the force on the arc-shaped rotor 2 during its initial swing. At this time, the left first magnet 12 is subjected to magnetic repulsion, and the right first magnet 12 is subjected to magnetic attraction. Therefore, the left first magnet 12 drives the sliding rod 10 and the pressing part 11 to move backward, and the right first magnet 12 drives the sliding rod 10 and the pressing part 11 to move forward. After the right first magnet 12 contacts the adjacent baffle 17, it is stopped by the baffle 17. Under the elastic force of the two force-amplifying elastic elements 9, the mounting plate 8 moves with the pressing part 11 and swings clockwise (from the top to the bottom view). The left elastic part 15 drives the left swing plate 14 and the left baffle 17 to swing to the right and reset until the left swing plate 14 and the left baffle 17 are reset to the initial unpowered state. At this time, the left baffle 17 is in front of the left first magnet 12, and the arc-shaped rotor 2 is disengaged from the left swing plate 14.

[0048] During the rightward swing of the arc-shaped rotor 2, when the second magnet 13 aligns with the rotor magnet 3, the mounting plate 8 disengages from the left-side pressing part 11, and at this time, the two force-enhancing elastic elements 9 no longer store elastic force. The rotor magnet 3 applies a swinging force to the mounting plate 8 through the second magnet 13, thereby hindering the reciprocating compression and stretching tendency of the two force-enhancing elastic elements 9, and causing the mounting plate 8 and the two force-enhancing elastic elements 9 to swing counterclockwise together (from a top-down perspective). Subsequently, during the swing of the arc-shaped rotor 2, the arc-shaped rotor 2 alternately presses the swing plates 14 on both sides, and the swing plates 14 on both sides operate repeatedly according to the above principle, increasing the smoothness of the swing process of the arc-shaped rotor 2.

[0049] Compared to Scheme 1, in this scheme, the force-enhancing elastic elements 9 on both sides apply force to the arc-shaped rotor 2 only when the arc-shaped rotor 2 is close to its limit state. This increases the initial force on the arc-shaped rotor 2 during its swing, causing the speed of the arc-shaped rotor 2 to increase rapidly when it starts to swing. It also reduces the resistance of the arc-shaped rotor 2 when it is not close to its limit position, thereby making the swing speed and the force during the swing process of the arc-shaped rotor 2 more uniform when it is not close to its limit position. This is beneficial to improving the uniformity of vibration of household appliances using this device.

[0050] It should be understood that this embodiment is for illustrative purposes only and is not intended to limit the scope of the invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the invention, and these equivalent forms also fall within the protection scope defined by this application.

Claims

1. A reciprocating yaw electromagnetic structure motor, characterized in that, The system includes a mounting housing (1), to which an arc-shaped rotor (2) is rotatably connected. A rotor magnet (3) is fixedly connected to the arc-shaped rotor (2). An output shaft (4) is fixedly connected to the side of the arc-shaped rotor (2) away from the rotor magnet (3). A magnetic core (5) is fixedly connected inside the mounting housing (1). Two symmetrically distributed coils (6) are fixedly connected to the magnetic core (5). The magnetic core (5) is U-shaped, and the two coils (6) are located on the two vertical portions of the U-shape of the magnetic core (5). The rotor... The magnet (3) is located on the side of the arc-shaped rotor (2) close to the magnetic core (5). When the two coils (6) are respectively supplied with currents in opposite directions and alternating, the two coils (6) and the magnetic core (5) form a U-shaped magnet with constantly changing magnetic poles. The U-shaped magnet drives the rotor magnet (3) to drive the arc-shaped rotor (2) to swing back and forth through the constantly alternating magnetic poles. The arc-shaped rotor (2) is fixed with a magnetic shield (7). The magnetic shield (7) is used to block the magnetic poles on one side of the rotor magnet (3).

2. The reciprocating oscillating electromagnetic structure motor according to claim 1, characterized in that, An installation plate (8) is provided inside the mounting shell (1). The installation plate (8) is rotatably connected to the arc-shaped rotor (2). Symmetrically distributed force-enhancing elastic elements (9) are fixed between the installation plate (8) and the arc-shaped rotor (2).

3. The reciprocating oscillating electromagnetic structure motor according to claim 2, characterized in that, It also includes two symmetrically distributed sliding rods (10), both of which are slidably connected to the mounting shell (1). The mounting plate (8) is rotatably connected to the mounting shell (1). Each sliding rod (10) is provided with a pressing part (11), which is used to press the mounting plate (8) to swing. Each sliding rod (10) is fixedly connected to a first magnet (12). The two first magnets (12) have the same magnetic poles on the side of the magnetic core (5). The mounting plate (8) is fixedly connected to a second magnet (13). The second magnet (13) and the rotor magnet (3) on the side away from the magnetic core (5) are magnetically attracted to each other. The mounting shell (1) is provided with symmetrically distributed limiting components that are used to limit the adjacent first magnets (12).

4. The reciprocating oscillating electromagnetic structure motor according to claim 3, characterized in that, The limiting component includes a swing plate (14), which is fixed to the mounting shell (1). The swing plate (14) is provided with an elastic part (15), and the mounting shell (1) is provided with a limiting part (16). The limiting part (16) is used to limit the deformation of the adjacent elastic part (15). The swing plate (14) is fixed with a baffle (17), which is used to limit the adjacent first magnet (12). The arc-shaped rotor (2) causes the elastic part (15) to deform by squeezing the swing plate (14).

5. The reciprocating yaw electromagnetic structure motor according to claim 4, characterized in that, The side of the arc-shaped rotor (2) near the magnetic core (5) and the side of the rotor magnet (3) near the magnetic core (5) together form a complete arc surface. The side of the magnetic core (5) near the arc-shaped rotor (2) is provided with two arc surfaces, and the centers of the circles on the two arc surfaces on the magnetic core (5) coincide. The radius of the circle on the magnetic core (5) is greater than the radius of the circle on the arc-shaped rotor (2).

6. The reciprocating yaw electromagnetic structure motor according to claim 5, characterized in that, The swing plate (14) is provided with a wear-resistant plate (18), the wear-resistant plate (18) has a smooth surface, and the swing plate (14) contacts the arc-shaped rotor (2) through the wear-resistant plate (18).

7. The reciprocating yaw electromagnetic structure motor according to claim 6, characterized in that, The connection between the force-enhancing elastic element (9) and the arc-shaped rotor (2) is located on the side of the arc-shaped rotor (2) away from its own rotation center.

8. The reciprocating yaw electromagnetic structure motor according to claim 7, characterized in that, The length of the magnetic shield (7) is less than the length of the rotor magnet (3) and greater than half the length of the rotor magnet (3).

9. A reciprocating yaw electromagnetic structure motor according to claim 8, characterized in that, The line connecting the two magnetic poles on the second magnet (13) is parallel to the swing axis of the arc-shaped rotor (2).

10. A reciprocating yaw electromagnetic structure motor according to claim 9, characterized in that, There is damping between the mounting plate (8) and the arc-shaped rotor (2) to reduce the speed at which the two force-enhancing elastic elements (9) push the mounting plate (8) to swing back and forth relative to the arc-shaped rotor (2).

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