Magnetic levitation vibration motor

Abstract

This invention relates to a magnetic levitation vibration motor, comprising a housing assembly, a vibrator assembly, an electromagnetic coil, and a positioning structure. The housing assembly includes a sleeve and a first cylinder, the sleeve being fitted over the outside of the first cylinder, the first cylinder forming a receiving cavity. The vibrator assembly includes a counterweight, a magnet, a second cylinder, and a limiting member, the second cylinder forming a receiving cavity, the counterweight being located on one side of the magnet, and the limiting member confining the counterweight and magnet within the receiving cavity. The electromagnetic coil is located between the sleeve and the first cylinder. The positioning structure is located on the inner wall of the first cylinder and / or on the outer wall of the second cylinder. The magnet generates a first magnetic field. Under natural conditions, the magnet and the sleeve generate magnetic attraction under the action of the first magnetic field, causing the second cylinder to levitate within the receiving cavity. When the electromagnetic coil generates a changing second magnetic field, the direction of the vibrator assembly toward the end cap is defined as the first direction. Under the interaction of the first and second magnetic fields, the vibrator assembly reciprocates along the first direction within the receiving cavity.

Description

Technical Field

[0001] This invention relates to the technical field of motors, and more particularly to a magnetic levitation vibration motor. Background Technology

[0002] In existing technologies, in linear vibration motors, the oscillator moves linearly. Because the oscillator is suspended and vibrates within the housing cavity, its reciprocating motion is prone to friction and collision with the sidewalls. This causes the reciprocating linear motion of the oscillator in the vibration motor to easily deviate. Such oscillator deviance is difficult to control precisely in high-frequency electromagnetic vibration, resulting in abnormal noise and wear when the oscillator collides with the housing. This seriously affects the service life of the magnetic levitation vibration motor and the user experience. Therefore, how to reduce the oscillator deviance without affecting the oscillator frequency of the magnetic levitation vibration motor is an urgent technical problem to be solved. Summary of the Invention

[0003] The purpose of this invention is to provide a magnetic levitation vibration motor that reduces the oscillator offset without affecting the oscillator frequency of the magnetic levitation vibration motor.

[0004] To address the aforementioned technical problems, a magnetic levitation vibration motor is provided, comprising a housing assembly, an oscillator assembly, an electromagnetic coil, and a positioning structure. The housing assembly includes a sleeve, a first cylinder, and an end cap. The end cap is snapped onto one end of the first cylinder, and the sleeve is fitted onto the outside of the first cylinder. The first cylinder forms a receiving cavity. The oscillator assembly includes a counterweight, a magnet, a second cylinder, and a limiting member. The second cylinder forms a receiving cavity and a slot communicating with the receiving cavity. The counterweight is located on one side of the magnet. The limiting member restricts the counterweight and the magnet within the receiving cavity, and one end of the limiting member is snapped into the slot. The electromagnetic coil is located between the sleeve and the first cylinder. The positioning structure is located on the inner wall of the first cylinder and / or on the outer wall of the second cylinder, allowing the second cylinder to slide at intervals within the receiving cavity.

[0005] The kit is made of magnetic material, while the first and second cylinders are made of non-magnetic material. The magnet generates a first magnetic field. Under natural conditions, the magnet and the kit generate magnetic attraction under the action of the first magnetic field, causing the second cylinder to suspend in the receiving cavity. When the electromagnetic coil generates a changing second magnetic field, the direction of the oscillator assembly toward the end cap is recorded as the first direction. Under the interaction of the first and second magnetic fields, the oscillator assembly reciprocates in the receiving cavity along the first direction.

[0006] Furthermore, the positioning structure includes a first guide post, the length direction of the first guide post is the same as the first direction, at least two first guide posts are connected at intervals to the inner wall of the first cylinder, and the side of the first guide post abuts against the outer wall of the second cylinder, so that the second cylinder reciprocates along the first guide post in the receiving cavity.

[0007] Furthermore, the first guide post includes a first cylindrical surface, which abuts against the outer wall of the second cylinder, so that the first guide post is in tangential contact with the outer wall of the second cylinder.

[0008] Furthermore, the end cap includes a fastening groove that communicates with the receiving cavity, and a fastening part protrudes from one end of the first cylinder, which is engaged in the fastening groove; a vent hole communicating with the receiving cavity is formed at the end of the first cylinder away from the end cap.

[0009] Furthermore, counterweights are provided on both sides of the magnet, and the counterweights are located in the accommodating cavity.

[0010] Furthermore, the positioning structure also includes a second guide post, the length direction of which is the same as the first direction, at least two second guide posts are connected at intervals to the outer wall of the second cylinder, and the side of the second guide post abuts against the inner wall of the first cylinder, so that the second cylinder reciprocates along the second guide post in the receiving cavity.

[0011] Furthermore, the second guide post includes an arc surface and a second cylindrical surface. The arc surface smoothly transitions to both sides of the second cylindrical surface, and the second cylindrical surface abuts against the inner wall of the first cylinder, so that the second guide post is in tangential contact with the inner wall of the first cylinder.

[0012] Furthermore, the positioning structure also includes a third guide post, the length direction of which is the same as the first direction, at least two sets of the third guide posts are spaced apart and connected to the outer wall of the second cylinder, and the side of the third guide post abuts against the inner wall of the first cylinder, so that the second cylinder reciprocates along the third guide post in the receiving cavity.

[0013] Furthermore, each group of the third guide posts includes two adjacent third guide posts, and the adjacent third guide posts form a first sliding groove. The first guide post abuts against the first sliding groove so that the second cylinder reciprocates along the first sliding groove in the receiving cavity.

[0014] Furthermore, the positioning structure includes a fourth guide post, the length direction of which is the same as the first direction, at least two sets of the fourth guide posts are spaced apart and connected to the inner wall of the first cylinder, and the side of the fourth guide post abuts against the outer wall of the second cylinder, so that the second cylinder reciprocates along the fourth guide post in the receiving cavity;

[0015] Each group of fourth guide posts includes two adjacent fourth guide posts, and the adjacent fourth guide posts form a second sliding groove. The second guide post abuts against the second sliding groove so that the second cylinder reciprocates along the second sliding groove in the receiving cavity.

[0016] Implementing the embodiments of the present invention will have the following beneficial effects:

[0017] In this embodiment, the magnetic levitation vibration motor generates magnetic attraction between the magnet and the kit under the action of the first magnetic field, causing the second cylinder to levitate in the receiving cavity. The positioning structure allows the second cylinder to slide intermittently in the receiving cavity. Thus, when the electromagnetic coil generates a changing second magnetic field, the oscillator assembly reciprocates in the receiving cavity along the first direction, overcoming the problem in the prior art that the offset of the oscillator during high-frequency vibration is difficult to control. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention 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 the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of the magnetic levitation vibration motor described in Embodiment 1 of the present invention;

[0020] Figure 2 This is an exploded schematic diagram of the magnetic levitation vibration motor described in Embodiment 1 of the present invention;

[0021] Figure 3 This is a schematic diagram of the structure of the first cylindrical body according to Embodiment 1 of the present invention;

[0022] Figure 4 for Figure 3 A magnified view of a section at point A in the middle;

[0023] Figure 5 This is an exploded view of the oscillator assembly described in Embodiment 1 of the present invention;

[0024] Figure 6 This is a schematic diagram of the structure of the second cylinder according to Embodiment 1 of the present invention;

[0025] Figure 7 This is a schematic diagram of the end cap structure according to Embodiment 1 of the present invention;

[0026] Figure 8 This is an exploded schematic diagram of the magnetic levitation vibration motor described in Embodiment 2 of the present invention;

[0027] Figure 9 This is a schematic diagram of the structure of the second cylinder according to Embodiment 2 of the present invention;

[0028] Figure 10 for Figure 9 A magnified view of a section at point B in the middle;

[0029] Figure 11 This is an exploded schematic diagram of the magnetic levitation vibration motor described in Embodiment 3 of the present invention;

[0030] Figure 12 This is a schematic diagram of the oscillator assembly described in Embodiment 3 of the present invention;

[0031] Figure 13 for Figure 12 A magnified view of a section at point C.

[0032] Wherein: 100, magnetic levitation vibration motor; 110, housing assembly; 111, kit; 112, first cylinder; 1121, receiving cavity; 1122, buckle; 1123, vent hole; 113, end cap; 1131, fastening groove; 120, vibrator assembly; 121, counterweight; 122, magnet; 123, second cylinder; 1231, receiving cavity; 1232, slot; 124, limiting member; 130, electromagnetic coil; 140, positioning structure; 141, first guide post; 1411, first cylindrical surface; 142, second guide post; 1421, arc surface; 1422, second cylindrical surface; 143, third guide post; 1431, first sliding groove. Detailed Implementation

[0033] To facilitate understanding of the present invention, a more complete description will be given below with reference to the accompanying drawings. Preferred embodiments of the invention are shown in the drawings. However, the invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a thorough and complete understanding of the disclosure of the invention.

[0034] It should be noted that when a component is said to be "fixed to" another component, it can be directly attached to the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0035] 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 description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0036] Example 1

[0037] Please refer to Figures 1-7 Embodiment 1 of the present invention provides a magnetic levitation vibration motor 100, including a housing assembly 110, a vibrator assembly 120, an electromagnetic coil 130, and a positioning structure 140. The housing assembly 110 includes a sleeve 111, a first cylinder 112, and an end cap 113. The end cap 113 is snapped onto one end of the first cylinder 112. The sleeve 111 is fitted onto the outside of the first cylinder 112, and the first cylinder 112 forms a receiving cavity 1121. The vibrator assembly 120 includes a counterweight 121, a magnet 122, a second cylinder 123, and a limiting member 124. The body 123 has a receiving cavity 1231 and a slot 1232 communicating with the receiving cavity 1231. The counterweight 121 is located on one side of the magnet 122. The limiting member 124 restricts the counterweight 121 and the magnet 122 within the receiving cavity 1231, and one end of the limiting member 124 is engaged with the slot 1232. The electromagnetic coil 130 is located between the kit 111 and the first cylinder 112. The positioning structure 140 is located on the inner wall of the first cylinder 112 and / or on the outer wall of the second cylinder 123, so that the second cylinder 123 slides at intervals within the receiving cavity 1121.

[0038] Among them, the kit 111 is made of magnetic material, while the first cylinder 112 and the second cylinder 123 are both made of non-magnetic material. The magnet 122 generates a first magnetic field. Under natural conditions, the magnet 122 and the kit 111 generate magnetic attraction under the action of the first magnetic field, causing the second cylinder 123 to suspend in the receiving cavity 1121. When the electromagnetic coil 130 generates a changing second magnetic field, the direction of the oscillator assembly 120 toward the end cover 113 is recorded as the first direction. Under the interaction of the first magnetic field and the second magnetic field, the oscillator assembly 120 reciprocates along the first direction in the receiving cavity 1121. In practical applications, the magnet 122 and the kit 111 generate a magnetic attraction force under the action of the first magnetic field, causing the second cylinder 123 to suspend in the receiving cavity 1121. Theoretically, the oscillator assembly 120 should be centrally suspended in the receiving cavity 1121, and the oscillator assembly 120 should reciprocate linearly along the first direction in the receiving cavity 1121 under the action of the changing second magnetic field. However, in actual applications, the oscillator assembly 120 will experience lateral displacement when reciprocating linearly along the first direction. The reasons for this phenomenon include uneven thickness of the kit 111 leading to uneven central magnetic attraction force, or uneven distribution of the central magnetic field generated by the electromagnetic coil 130. Therefore, it is difficult to ensure that the oscillator assembly is centrally suspended. When component 120 moves in the first direction, it can maintain the required linear reciprocating vibration. Therefore, in this invention, the positioning structure 140 is set on the inner wall of the first cylinder 112, or on the outer wall of the second cylinder 123, or the positioning structure 140 is set on both the inner wall of the first cylinder 112 and the outer wall of the second cylinder 123. In this way, the second cylinder 123 abuts against the positioning structure 140 and slides in the receiving cavity 1121, which can ensure that the oscillator assembly 120 reciprocates linearly in the receiving cavity 1121 in a centered manner. This can reduce the offset generated by the oscillator of the magnetic levitation vibration motor 100 and avoid the collision and wear between the oscillator assembly 120 and the inner wall of the receiving cavity 1121, thus affecting its service life.

[0039] In one possible implementation, the positioning structure 140 includes a first guide post 141, the length direction of the first guide post 141 is the same as the first direction, at least two first guide posts 141 are spaced apart and connected to the inner wall of the first cylinder 112, and the side of the first guide post 141 abuts against the outer wall of the second cylinder 123, so that the second cylinder 123 reciprocates along the first guide post 141 in the receiving cavity 1121. In specific applications, to avoid the positioning structure 140 affecting the vibration frequency of the oscillator assembly 120, the positioning structure 140 includes a first guide post 141 in the same direction as the first cylinder 112. The first guide post 141 is integrally formed with the first cylinder 112, and at least two guide posts 141 are connected to the inner wall of the first cylinder 112 at intervals around it. The side of the first guide post 141 abuts against the outer wall of the second cylinder 123, so that the second cylinder 123 reciprocates along the first guide post 141 in the receiving cavity 1121. In this way, the positioning structure 140 improves the central linear vibration of the oscillator assembly 120 while avoiding the positioning structure 140 from generating resistance to the reciprocating vibration of the oscillator assembly 120.

[0040] In one possible implementation, the first guide post 141 includes a first cylindrical surface 1411, which abuts against the outer wall of the second cylinder 123, so that the first guide post 141 and the outer wall of the second cylinder 123 are in tangential contact. In specific applications, in order to reduce the contact area between the first guide post 141 and the second cylinder 123, the first cylindrical surface 1411 of the first guide post 141 abuts against the outer wall of the second cylinder 123, thereby making the first guide post 141 and the outer wall of the second cylinder 123 in tangential contact. This reduces the friction between the first guide post 141 and the second cylinder 123, thereby allowing the oscillator assembly 120 to vibrate smoothly in a linear reciprocating motion within the receiving cavity 1121.

[0041] In one possible implementation, the end cap 113 includes a fastening groove 1131 that communicates with the receiving cavity 1121. One end of the first cylindrical body 112 is provided with a fastening part 1122 that is engaged in the fastening groove 1131. The end of the first cylindrical body 112 away from the end cap 113 has a vent hole 1123 that communicates with the receiving cavity 1121. In practical applications, since the fastening groove 1131 is connected to the receiving cavity 1121, the first cylinder 112 forms a vent 1123 that connects to the receiving cavity 1121. Thus, when the vibrator assembly 120 reciprocates in the receiving cavity 1121, the end cap 113 and the two ends of the first cylinder 112 are equivalent to compressing the air in the receiving cavity 1121, thereby generating greater air resistance. Through the connection between the fastening groove 1131 and the receiving cavity 1121 and the vent 1123 of the receiving cavity 1121, the compressed air in the receiving cavity 1121 can be discharged into the outside air in a timely manner, thereby eliminating the influence of air resistance on the vibration intensity and frequency of the vibrator assembly 120.

[0042] In one possible implementation, counterweights 121 are provided on both sides of the magnet 122, and the counterweights 121 are both located in the receiving cavity 1231. In specific applications, the counterweights 121 connected to the magnet 122 can enhance the inertial force of the oscillator assembly 120, thereby increasing the vibration intensity of the oscillator assembly 120 in the receiving cavity 1121. If the counterweights 121 are only placed on one side of the magnet 122, with the middle of the receiving cavity 1121 as the dividing line, it will cause the intensity and frequency of the reciprocating vibration of the oscillator assembly 120 to be different, or the oscillator assembly 120 to become unbalanced in reciprocating vibration, thereby causing the electromagnetic coil 130 to consume power abnormally, heat up and damage the electromagnetic coil 130. Therefore, it is necessary to provide counterweights 121 on both sides of the magnet 122 to increase the vibration intensity of the oscillator assembly 120 in the receiving cavity 1121.

[0043] Example 2

[0044] This embodiment differs from the positioning structure 140 in Embodiment 1 in the following specific ways:

[0045] Please refer to Figures 8-10The positioning structure 140 of Embodiment 2 of the present invention further includes a second guide post 142. The length direction of the second guide post 142 is the same as that of the first direction. At least two second guide posts 142 are connected at intervals to the outer wall of the second cylinder 123, and the side of the second guide post 142 abuts against the inner wall of the first cylinder 112, so that the second cylinder 123 reciprocates along the second guide post 142 in the receiving cavity 1121. In specific applications, the positioning structure 140 can also be a second guide post 142. The second guide post 142 is also in the same direction as the first one. The difference from the first embodiment is that at least two second guide posts 142 are connected to the outer wall of the second cylinder 123 around the second cylinder 123. The second guide post 142 is integrally formed with the second cylinder 123, and the side of the second guide post 142 abuts against the inner wall of the first cylinder 112, so that the second cylinder 123 reciprocates along the second guide post 142 in the receiving cavity 1121. In this way, the centered linear vibration of the oscillator assembly 120 can be improved by the second guide post 142 while avoiding the positioning structure 140 from generating resistance to the reciprocating vibration of the oscillator assembly 120.

[0046] Furthermore, the second guide post 142 includes an arc surface 1421 and a second cylindrical surface 1422. The arc surface 1421 is smoothly connected to both sides of the second cylindrical surface 1422, and the second cylindrical surface 1422 abuts against the inner wall of the first cylinder 112, so that the second guide post 142 is in tangential contact with the inner wall of the first cylinder 112. In specific applications, in order to avoid motion interference between the two ends of the second guide post 142 and the end cap 113 or the bottom wall of the first cylinder 112, the two ends of the second guide post 142 are provided with arc surfaces 1421, and the arc surfaces 1421 are smoothly connected to the second cylindrical surface 1422, so that the second guide post 142 is in tangential contact with the inner wall of the first cylinder 112. In this way, the friction between the second guide post 142 and the first cylinder 112 can also be reduced, so that the oscillator assembly 120 can smoothly reciprocate linearly in the receiving cavity 1121.

[0047] Example 3

[0048] This embodiment differs from the positioning structure 140 in Embodiment 1 in the following specific ways:

[0049] Please refer to Figures 11-13The positioning structure 140 of Embodiment 3 of the present invention further includes a third guide post 143. The length direction of the third guide post 143 is the same as the first direction. At least two sets of third guide posts 143 are connected at intervals to the outer wall of the second cylinder 123, and the side of the third guide post 143 abuts against the inner wall of the first cylinder 112, so that the second cylinder 123 reciprocates along the third guide post 143 in the receiving cavity 1121. In specific applications, the positioning structure 140 can also be a third guide post 143. The third guide post 143 is also in the same direction as the first one. The difference from the first embodiment is that at least two sets of third guide posts 143 are connected to the outer wall of the second cylinder 123 around the second cylinder 123. The third guide post 143 is integrally formed with the second cylinder 123, and the side of the third guide post 143 abuts against the inner wall of the first cylinder 112, so that the second cylinder 123 reciprocates along the third guide post 143 in the receiving cavity 1121. In this way, the central linear vibration of the vibrator assembly 120 can be improved by the third guide post 143 while avoiding the positioning structure 140 from generating resistance to the reciprocating vibration of the vibrator assembly 120.

[0050] Furthermore, each group of third guide posts 143 includes two adjacent third guide posts 143, and the adjacent third guide posts 143 form a first sliding groove 1431. The first guide post 141 abuts against the first sliding groove 1431 so that the second cylinder 123 reciprocates along the first sliding groove 1431 in the receiving cavity 1121. In specific applications, during reciprocating vibration, in addition to lateral offset, the vibrator assembly 120 also rotates to a certain extent. For the high-frequency vibration process of the vibrator assembly 120, it is easy to cause rotational friction between the third guide post 143 and the first cylinder 112, resulting in lateral scratches on the third guide post 143. These scratches will increase the friction during reciprocating high-frequency vibration. Therefore, each group of third guide posts 143 is formed with adjacent third guide posts 143, and the adjacent third guide posts 143 form a first sliding groove 1431. The first guide post 141 is restricted to slide in the first sliding groove 1431, so that the second cylinder 123 can reciprocate along the first sliding groove 1431 in the receiving cavity 1121.

[0051] Example 4

[0052] The positioning structure 140 in this embodiment differs from that in Embodiment 4, specifically in the following ways:

[0053] Please refer to Figures 1-7The positioning structure 140 of the fourth embodiment of the present invention includes a fourth guide post (not shown in the figure). The length direction of the fourth guide post is the same as the first direction. At least two sets of fourth guide posts are connected at intervals to the inner wall of the first cylinder 112, and the side of the fourth guide post abuts against the outer wall of the second cylinder 123, so that the second cylinder 123 reciprocates along the fourth guide post in the receiving cavity 1121.

[0054] Each group of fourth guide posts includes two adjacent fourth guide posts, and the adjacent fourth guide posts form a second slide groove (not shown). The second guide post 142 abuts against the second slide groove so that the second cylinder 123 reciprocates along the second slide groove in the receiving cavity 1121. In specific applications, the positioning structure 140 can also be a fourth guide post. The fourth guide post is also in the same direction as the first one. The difference from the first embodiment is that at least two sets of fourth guide posts are connected to the inner wall of the first cylinder 112 around the first cylinder 112. The fourth guide post is integrally formed with the first cylinder 112, and the side of the fourth guide post abuts against the inner wall of the second cylinder 123, so that the second cylinder 123 reciprocates along the fourth guide post in the receiving cavity 1121. In this way, the central linear vibration of the vibrator assembly 120 can be improved by the fourth guide post while avoiding the positioning structure 140 from generating resistance to the reciprocating vibration of the vibrator assembly 120. Each set of fourth guide posts forms an adjacent fourth guide post, and the adjacent fourth guide posts form a second sliding groove. The second guide post 142 is restricted to slide in the second sliding groove, so that the second cylinder 123 reciprocates along the second sliding groove in the receiving cavity 1121.

[0055] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the scope of protection of the present invention. Therefore, the scope of protection of this patent should be determined by the appended claims.

Claims

1. A magnetic levitation vibration motor, characterized by, include: A housing assembly, the housing assembly including a kit, a first cylindrical body and an end cap, the end cap being snapped onto one end of the first cylindrical body, the kit being sleeved on the outside of the first cylindrical body, and the first cylindrical body forming a receiving cavity; The oscillator assembly includes a counterweight, a magnet, a second cylinder, and a limiting member. The second cylinder forms a receiving cavity and a slot communicating with the receiving cavity. The counterweight is located on one side of the magnet. The limiting member restricts the counterweight and the magnet within the receiving cavity, and one end of the limiting member is engaged with the slot. The direction of the oscillator assembly toward the end cap is defined as the first direction. An electromagnetic coil, located between the kit and the first cylinder; The positioning structure includes a first guide post located on the inner wall of the first cylinder and a third guide post located on the outer wall of the second cylinder. The length directions of the first guide post and the third guide post are the same as the first direction. At least two first guide posts are spaced apart and connected to the inner wall of the first cylinder. The first guide post includes a first cylindrical surface, which abuts against the outer wall of the second cylinder so that the first guide post and the outer wall of the second cylinder are in tangential contact. At least two sets of third guide posts are spaced apart and connected to the outer wall of the second cylinder, and the side of the third guide post abuts against the inner wall of the first cylinder. Each set of third guide posts includes two adjacent third guide posts, and the adjacent third guide posts form a first sliding groove. The first guide post abuts against the first sliding groove so that the second cylinder reciprocates along the first sliding groove, the first guide post, and the third guide post in the receiving cavity. The kit is made of magnetic material, while the first and second cylinders are made of non-magnetic material. The magnet generates a first magnetic field. Under natural conditions, the magnet and the kit generate magnetic attraction under the action of the first magnetic field, causing the second cylinder to suspend in the receiving cavity. When the electromagnetic coil generates a changing second magnetic field, the oscillator assembly reciprocates in the receiving cavity along the first direction under the interaction of the first and second magnetic fields.

2. The magnetic levitation vibration motor according to claim 1, characterized in that, The end cap includes a fastening groove that communicates with the receiving cavity. One end of the first cylinder has a protruding fastening part that is engaged in the fastening groove. The end of the first cylinder away from the end cap has a vent hole that communicates with the receiving cavity.

3. The magnetic levitation vibration motor of claim 1, wherein, The magnet has counterweights on both sides, and the counterweights are located in the accommodating cavity.

4. A magnetic levitation vibration motor, characterized in that, include: A housing assembly, the housing assembly including a kit, a first cylindrical body and an end cap, the end cap being snapped onto one end of the first cylindrical body, the kit being sleeved on the outside of the first cylindrical body, and the first cylindrical body forming a receiving cavity; The oscillator assembly includes a counterweight, a magnet, a second cylinder, and a limiting member. The second cylinder forms a receiving cavity and a slot communicating with the receiving cavity. The counterweight is located on one side of the magnet. The limiting member restricts the counterweight and the magnet within the receiving cavity, and one end of the limiting member is engaged with the slot. The direction of the oscillator assembly toward the end cap is defined as the first direction. An electromagnetic coil, located between the kit and the first cylinder; The positioning structure includes a fourth guide post located on the inner wall of the first cylinder and a second guide post located on the outer wall of the second cylinder. The length directions of the second guide post and the fourth guide post are the same as the first direction. At least two second guide posts are spaced apart and connected to the outer wall of the second cylinder. The second guide post includes an arc surface and a second cylindrical surface. The arc surface smoothly transitions to both sides of the second cylindrical surface. The second cylindrical surface abuts against the inner wall of the first cylinder so that the second guide post is in tangential contact with the inner wall of the first cylinder. At least two sets of fourth guide posts are spaced apart and connected to the inner wall of the first cylinder, and the side of the fourth guide post abuts against the outer wall of the second cylinder. Each set of fourth guide posts includes two adjacent fourth guide posts, and the adjacent fourth guide posts form a second sliding groove. The second guide post abuts against the second sliding groove, and the side of the second guide post abuts against the inner wall of the first cylinder so that the second cylinder reciprocates along the second guide post and the second sliding groove in the receiving cavity. The kit is made of magnetic material, while the first and second cylinders are made of non-magnetic material. The magnet generates a first magnetic field. Under natural conditions, the magnet and the kit generate magnetic attraction under the action of the first magnetic field, causing the second cylinder to suspend in the receiving cavity. When the electromagnetic coil generates a changing second magnetic field, the oscillator assembly reciprocates in the receiving cavity along the first direction under the interaction of the first and second magnetic fields.

5. The magnetic levitation vibration motor according to claim 4, characterized in that, The end cap includes a fastening groove that communicates with the receiving cavity. One end of the first cylinder has a protruding fastening part that is engaged in the fastening groove. The end of the first cylinder away from the end cap has a vent hole that communicates with the receiving cavity.

6. The magnetic levitation vibration motor according to claim 4, characterized in that, The magnet has counterweights on both sides, and the counterweights are located in the accommodating cavity.

Images