Magnetic suspension device and lifting mechanism thereof

Abstract

A magnetic levitation device and a lifting mechanism thereof, the lifting mechanism comprising: a guide cylinder with a circumferential wall, wherein the circumferential wall of the guide cylinder is provided with a guide groove with a gradually changing height; a lifting bracket for carrying a basic module of the magnetic levitation device, wherein a horizontal roller is provided along its outer circumference, the lifting bracket is installed in the guide cylinder and the two are relatively rotatable around a vertical rotation axis, and the roller of the lifting bracket is inserted into the guide groove of the guide cylinder; and a guide shaft disk provided with at least one vertical guide shaft, wherein the upper and lower positions thereof are unchanged relative to the guide cylinder, wherein the lifting bracket is non-rotatably installed relative to the guide shaft disk but is slidable up and down along the at least one vertical guide shaft. The present invention does not require an axial or vertical spiral lifting mechanism, thereby minimizing the height or thickness of the device. In addition, due to the surrounding guiding effect of the guide cylinder, the lifting and lowering of the lifting bracket is also smoother.

Description

Technical Field

[0001] The present invention generally relates to magnetic levitation devices. Background Art

[0002] Existing magnetic levitation devices, such as magnetic levitation desk lamps, speakers or globes, generally include a magnetic levitation base (base) and a suspension body. Both the base and the suspension body contain magnets. The magnets in the base can suspend the suspension body at a predetermined distance above it through magnetic effects (such as magnetic repulsion), creating a floating fantasy visual effect, which is deeply loved by people.

[0003] However, in the existing magnetic levitation device, the levitation object usually needs to be manually placed at a suitable levitation position relative to the base to achieve stable floating of the levitation object. For the initial (inexperienced) user, the process of manually finding a suitable levitation position will seem difficult and long, and may lose patience and interest.

[0004] The magnetic suspension devices disclosed in the applicant's patent documents WO2016 / 202187A1, CN104901587A, CN204687868U, CN205666775U, CN211352080U, etc. include a base and a suspended body, wherein the base includes a magnetic suspension mechanism and a lifter, and the magnetic suspension mechanism with an annular magnet is placed on the lifter and rises and falls accordingly to achieve automatic suspension or falling of the suspended body relative to the base. In addition, patent documents CN102315805A, CN207202600U, CN102570927A, etc. also disclose similar automatic lifting mechanisms for magnetic suspension devices. Although such lifting mechanisms can achieve automatic suspension of the suspended body, the height or thickness of the device is too increased, which brings inconvenience. Summary of the invention

[0005] The object of the present invention is to provide a magnetic suspension device, the suspension body of which can not only realize automatic suspension but also minimize the height or thickness of the device.

[0006] In the present application, the term "base module", "matrix" or "base" refers to a functionalized module, which and the suspension are respectively provided with magnetic components that can interact to provide a static equilibrium magnetic field, and furthermore, it also has a controller and other related electromagnetic components to be able to control the suspension in real time to be in a balanced suspension position relative to it. In addition, the term "magnet" and "magnet" have the same meaning, both refer to magnetic components formed with N and S poles, which can be constituted separately or combined to form a "magnetic component".

[0007] According to a first aspect of the present invention, there is provided a lifting mechanism for a magnetic suspension device, wherein the magnetic suspension device has a suspension body and a basic module for stably suspending the suspension body relative to the suspension body, and the lifting mechanism comprises:

[0008] A guide cylinder having a circumferential wall, wherein a guide groove with a gradually changing height is arranged on the circumferential wall of the guide cylinder.

[0009] The lifting bracket for carrying the basic module of the magnetic suspension device is provided with a horizontal roller along its outer circumference. The lifting bracket is installed in the guide tube and the two are relatively rotatable around the vertical rotation axis. The roller of the lifting bracket is inserted into the guide groove of the guide tube.

[0010] A guide shaft disk is provided with at least one vertical guide shaft, and its up and down position (or height) relative to the guide cylinder remains unchanged, wherein the lifting bracket is non-rotatably installed relative to the guide shaft disk but is slidable up and down along the at least one vertical guide shaft.

[0011] According to a specific embodiment of the lifting mechanism of the present invention, at least one guide groove is arranged on the circumferential wall of the guide cylinder; the lifting bracket is a supporting circular plate, and at least one radial roller corresponding to the at least one guide groove of the guide cylinder is arranged along the outer circumference.

[0012] The at least one radial roller is also preferably provided with a roller suitable for rolling along the at least one guide groove.

[0013] The at least one guide channel preferably has a lower horizontal section, a middle smooth transition section and an upper horizontal section.

[0014] A plurality of guide grooves of the same height and shape are preferably evenly distributed on the circumferential wall of the guide cylinder, and a plurality of radial rollers of the same height and shape are correspondingly arranged on the outer circumference of the supporting circular plate.

[0015] According to the lifting mechanism of the present invention, the at least one vertical guide axis is preferably a plurality of vertical guide axes parallel to each other.

[0016] According to a preferred embodiment of the lifting mechanism of the present invention, the guide cylinder is fixed, and the lifting bracket and the guide shaft disk are driven to rotate by a bidirectional stepping motor. For example, through a reduction gear transmission mechanism provided between the motor and the guide shaft disk, the motor can drive the guide shaft disk to rotate, thereby driving the lifting bracket to rotate accordingly.

[0017] According to another alternative solution of the lifting mechanism of the present invention, the guide shaft disc is fixed and the guide cylinder is driven to rotate by a bidirectional stepping motor.

[0018] According to another aspect of the present invention, there is also provided a magnetic suspension device, comprising the above-mentioned lifting mechanism.

[0019] It should be understood by those skilled in the art that different embodiments of the present invention may introduce each other's features or feature combinations, unless obviously inapplicable.

[0020] The present invention does not need an axial or vertical spiral lifting mechanism, thereby minimizing the height or thickness of the device. In addition, due to the surrounding guiding effect of the guide tube, the lifting of the lifting bracket is also more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is an exploded schematic diagram of a magnetic levitation device according to a first embodiment of the present invention; and

[0022] Figure 2 FIG. 1 is an exploded schematic diagram of a magnetic levitation device according to a second embodiment of the present invention. DETAILED DESCRIPTION

[0023] The present invention is further described below in conjunction with the embodiments and drawings. Those skilled in the art should understand that the embodiments and drawings are only for a better understanding of the present invention and are not intended to be limiting in any way.

[0024] The specific structure and working principle of the magnetic suspension device of the present invention can be found in the applicant's previous patent CN1819436B (the full text of which is hereby incorporated by reference), which includes a basic module (also referred to as a "base" or "base") and a suspended body such as a globe that can be stably suspended above it. The basic module and the suspended body are respectively provided with magnetic components that can interact with each other to provide a static balanced magnetic field, and a controller and other related electromagnetic components are also arranged in the basic module or the base to control the suspended body to be in a balanced suspended position relative to the base in real time.

[0025] Figure 1 The exploded schematic diagram of the magnetic suspension device according to the first embodiment of the present invention is shown, which comprises a base 1 and a suspension body 2 suspended thereon. The suspension body 2 is provided with, for example, a cylindrical magnet 2A. The upper surface of the base 1 is also provided with a positioning protrusion 1A for initially positioning the suspension body 2, for example, protruding into a corresponding recess 2B provided on the suspension body 2.

[0026] like Figure 1 As shown, the lifting mechanism of the present invention is located in the base 1. It includes a fixed bottom plate 10, a rotating guide shaft disk 20, a lifting bracket 30 and a guide cylinder 40. A basic module 35 is arranged on the lifting bracket 30, including, for example, a circuit board, a ring magnet, an electromagnetic coil and a controller.

[0027] The fixed base plate 10 is located at the bottom of the base 1, and includes a motor 11 located on the outside and a support shaft 13 located in the center. The rotating guide shaft disk 20 is rotatably located on the fixed base plate 10 around the support shaft 13, and is provided with a plurality of (four in the figure) vertical guide shafts 21. A horizontal pinion 12 is mounted on the output shaft of the motor 11, which is used to mesh with a horizontal large gear 22 arranged on the outer circumference of the rotating guide shaft disk 20. The motor 11 is a bidirectional stepping motor.

[0028] The lifting bracket 30 is in the shape of a horizontally arranged support disc, and is provided with a plurality of (four in the figure) through holes 31. The lifting bracket 30 is provided with a plurality of (four in the figure) horizontal radially extending rollers 32 along its outer circumference. A roller 33 is also mounted on the roller 32, and is fixed to the lifting bracket 30 by screwing its threaded end into the roller threaded seat 34. The lifting bracket 30 is located on the rotating guide shaft disk 20, so that the guide shafts 21 of the rotating guide shaft disk 20 pass through the corresponding through holes 31 of the lifting bracket 30 respectively. In this way, the lifting bracket 30 is non-rotatably mounted relative to the rotating guide shaft disk 20 but can slide up and down along the guide shaft 21.

[0029] The guide tube 40 is in the form of a cylindrical tube, and a plurality of guide grooves 41 with gradually changing heights are arranged on its circumferential wall. The four guide grooves 41 shown in the figure are evenly distributed and have the same shape, and all have a lower horizontal section, a smooth transition section in the middle such as an inclined section, and an upper horizontal section. The lifting bracket 30 is located in the guide tube 40, and the roller 32 and the roller 33 thereon extend into the corresponding guide grooves 41 respectively.

[0030] In this way, as the motor 11 drives the rotating guide shaft disk to rotate left and right through the reduction transmission system composed of the small gear 12 and the large gear 22, the lifting bracket 30 also rotates accordingly, and the roller 33 on the roller 32 moves up and down along the guide groove 41, thereby driving the lifting bracket 30 to move up and down along the guide shaft 21 until the roller 33 stops at the upper or lower horizontal section of the guide groove 41.

[0031] In this embodiment, the height or thickness of the device can be minimized by eliminating the axial or vertical spiral lifting mechanism. In addition, due to the integrated rotational rise of the lifting bracket 30 and the basic module 35 thereon, the suspension 2 can automatically be in a rotating state (no need to manually fiddle with the suspension 2 to put it in a rotating state for viewing and other occasions) at the moment of separation from the base 1 (at this time, the distance between the suspension 2 and the basic module 35 is just the set suspension height when the suspension is stably suspended relative to the basic module). For example, if the lifting bracket 30 and the basic module 35 rotate and rise clockwise, the suspension 1 will be automatically suspended in a clockwise rotating state. In addition, due to the guiding effect of the guide tube 40 around, the lifting and lowering of the lifting bracket 30 will be more stable.

[0032] Figure 2 is an exploded schematic diagram of a magnetic levitation device according to a second embodiment of the present invention. Figure 1 The embodiment shown is different in that Figure 2 In the illustrated embodiment, the guide shaft 21 is disposed on a fixed guide shaft disk 20', and a motor 11 fixedly disposed relative to the fixed guide shaft disk 20' drives the guide cylinder 40 to rotate left and right through a reduction transmission system formed by a small gear 12 fixed on its output shaft and a large gear 42 fixed on the guide cylinder 40, thereby realizing the up and down movement of the lifting bracket 30 along the guide shaft 21.

[0033] Of course, in some applications, the guide shaft 21 can be eliminated as long as the guide tube 40 and the lifting bracket 30 are prevented from rotating together. Figure 1 In the illustrated embodiment, the longitudinal or vertical length of the pinion gear 12 can be increased to directly mesh with a corresponding large gear disposed on the outer circumference of the lifting bracket 30 .

[0034] Although in the illustrated embodiment, the basic module 35 and the lifting mechanism of the magnetic levitation device are integrally enclosed in a base 1, the base 1 can also be eliminated depending on the application scenario, as long as the suspended body 2 can be initially positioned relative to the basic module 35 along the suspension vertical line to a non-suspended state higher than the set suspension height.

[0035] Those skilled in the art should understand that the above-mentioned various directional terms including “upper”, “lower”, etc. are only used to illustrate the embodiments shown in the drawings but are not intended to limit the present invention.

Claims

1. A magnetic suspension device, comprising a suspension body and a base, wherein the upper surface of the base is provided with a positioning protrusion for initially positioning the suspension body, and the base is provided with: The basic module for making the suspended body stable relative to it, A guide cylinder having a circumferential wall, wherein a guide groove with a gradually changing height is arranged on the circumferential wall of the guide cylinder. The lifting bracket for carrying the basic module is provided with a horizontal roller along its outer circumference. The lifting bracket is installed in the guide tube and the two are relatively rotatable around the vertical rotation axis. The roller of the lifting bracket is inserted into the guide groove of the guide tube. A guide shaft disc is provided with at least one vertical guide shaft, and its vertical position relative to the guide cylinder remains unchanged, wherein the lifting bracket is non-rotatably installed relative to the guide shaft disc but is slidable up and down along the at least one vertical guide shaft, At least one guide groove is arranged on the circumferential wall of the guide cylinder, The lifting bracket is a supporting circular plate, and at least one radial roller corresponding to the at least one guide groove of the guide cylinder is arranged along the outer circumference. The guide cylinder is fixed, and the lifting bracket and the guide shaft disk are driven to rotate by a bidirectional stepping motor.

2. The magnetic suspension device according to claim 1, wherein a roller suitable for rolling along the at least one guide groove is also mounted on the at least one radial roller.

3. The magnetic levitation device according to claim 1, wherein the at least one guide groove has a lower horizontal section, a middle smooth transition section and an upper horizontal section.

4. The magnetic suspension device according to claim 1, wherein a plurality of guide grooves of the same height and shape are evenly distributed on the circumferential wall of the guide cylinder, and a plurality of radial rollers of the same height and shape are correspondingly arranged on the outer circumference of the supporting circular plate.

5. The magnetic levitation device according to claim 1, wherein the at least one vertical guide axis is a plurality of vertical guide axes parallel to each other.

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