CN111083584B

CN111083584B - Rotary lifting mechanism and control method thereof, projector and sound box

Info

Publication number: CN111083584B
Application number: CN201911341840.3A
Authority: CN
Inventors: 唐微
Original assignee: Goertek Inc
Current assignee: Goertek Inc
Priority date: 2019-12-20
Filing date: 2019-12-20
Publication date: 2021-06-01
Anticipated expiration: 2039-12-20
Also published as: CN111083584A

Abstract

The invention discloses a rotary lifting mechanism and a control method thereof, a projector and a sound box, wherein the rotary lifting mechanism is defined to comprise a lifting direction, and comprises the following components: a first member; a second member detachably connected to the first member; the guide structure comprises a first guide part arranged on the first member and a second guide part arranged on the second member, and the first guide part is matched with the second guide part so as to enable the second member or the first member to lift and/or rotate along the lifting direction; wherein one of the first member and the second member is provided with an electromagnetic assembly, and the other of the first member and the second member is provided with a magnetic piece, at least one magnetic pole of the magnetic piece being arranged towards a magnetic pole of the electromagnetic assembly. The technical scheme of the invention aims to increase the use functionality and the interestingness of the mounted component.

Description

Rotary lifting mechanism and control method thereof, projector and sound box

Technical Field

The invention relates to the technical field of lifting adjustment, in particular to a rotary lifting mechanism and a control method thereof, a projector and a sound box.

Background

At present, sound boxes on the market have more and more functions, such as projectors, cameras and the like, and the projectors or the cameras and the sound box main body are generally arranged into an integral structure or a detachable split structure. When the sound boxes or the projectors and the cameras are functionally expanded, the adjustment mechanism is not arranged between the projectors or the cameras and the sound boxes, so that the functional expansion effect is greatly reduced, and the use functionality and the interestingness of the sound boxes or the projectors and the cameras are reduced.

The above description is only for the purpose of assisting understanding of the technical solutions of the present application, and does not represent an admission of prior art.

Disclosure of Invention

The invention mainly aims to provide a rotary lifting mechanism, a control method of the rotary lifting mechanism, a projector and a sound box, and aims to increase the use functionality and the interestingness of a mounted component.

To achieve the above object, the present invention provides a rotary lifting mechanism, which is defined to include a lifting direction, the rotary lifting mechanism including:

a first member;

a second member detachably connected to the first member; and

the guide structure comprises a first guide part arranged on the first member and a second guide part arranged on the second member, and the first guide part is matched with the second guide part so as to enable the second member or the first member to lift and/or rotate along the lifting direction;

wherein one of the first member and the second member is provided with an electromagnetic assembly, and the other of the first member and the second member is provided with a magnetic piece, at least one magnetic pole of the magnetic piece being arranged towards a magnetic pole of the electromagnetic assembly.

In some embodiments of the present invention, one of the first guide portion and the second guide portion is a guide post, the guide post extends along the lifting direction, a side surface of the guide post is provided with a guide groove spirally arranged along a circumferential direction of the guide post, and the guide groove extends along the lifting direction;

the other one of the first guide part and the second guide part is a sliding block which is slidably arranged in the guide groove.

In some embodiments of the invention, one end of the guide post is fixedly connected with the first member;

the second component is provided with a positioning hole, the wall of the positioning hole is provided with the sliding block, and the positioning hole is sleeved on the guide post so that the sliding block can be contained in the guide groove in a sliding mode.

In some embodiments of the present invention, the second member includes a module housing and a positioning cylinder disposed in the module housing, the positioning cylinder forms the positioning hole, one end of the positioning hole penetrates through a surface of the housing, the magnetic member or the electromagnetic assembly forms a through hole, and one of the magnetic member or the electromagnetic assembly is fixed to an outer side of the positioning cylinder in a sleeved manner.

In some embodiments of the present invention, the module housing is used for mounting a projector module or a speaker unit, the module housing includes a module front shell and a module rear shell connected to the module front shell, and the positioning cylinder is disposed on the module front shell or the module rear shell;

and/or the module shell is provided with a first placing groove surrounding the positioning cylinder, and the magnetic part or the electromagnetic assembly is placed in the first placing groove when one of the magnetic part and the electromagnetic assembly is sleeved on the outer side of the positioning cylinder.

In some embodiments of the invention, the first member includes a body housing and a bracket disposed within the body housing for securing the other of the electromagnetic assembly or the magnetic member.

In some embodiments of the present invention, the main body housing includes a main body front case and a main body rear case connected to the main body front case, and the stand is disposed at the main body front case or the main body rear case;

and/or, the main body shell is provided with a second placing groove, and the other one of the electromagnetic assembly or the magnetic piece is placed in the second placing groove.

In some embodiments of the present invention, one of the module case and the main body case is provided with a snap, and the other of the module case and the main body case is provided with a snap groove, and the snap is snapped in the snap groove to detachably connect the module case and the main body case.

The invention also provides a control method of the rotary lifting mechanism, which comprises the following steps;

acquiring a control instruction of the rotary lifting mechanism;

controlling the magnetic pole direction of the electromagnetic assembly according to the control instruction;

the magnetic piece and the electromagnetic assembly drive the second component to lift and/or rotate relative to the first component according to the magnetic force generated by the magnetic pole direction.

In some embodiments of the present invention, the step of controlling the magnetic pole direction of the electromagnetic assembly according to the control command comprises:

when the control instruction is confirmed to be a rising instruction, controlling the electromagnetic assembly to be electrified with current in a first current direction so that the electromagnetic assembly repels the magnetic piece;

confirming a rising height parameter according to the rising instruction;

confirming a current parameter electrified in a first current direction according to the rising height parameter;

controlling a value of a repulsive force of the electromagnetic assembly according to the current parameter.

In some embodiments of the present invention, the step of controlling the magnetic pole direction of the electromagnetic assembly according to the control command further comprises:

when the control instruction is confirmed to be a descending instruction, controlling the electromagnetic assembly to be electrified with current in a second current direction so that the electromagnetic assembly attracts the magnetic piece, wherein the first current direction is opposite to the second current direction;

confirming a descending height parameter according to the descending instruction;

confirming the current parameter electrified in the second current direction according to the descending height parameter;

and controlling the adsorption force value of the electromagnetic assembly according to the current parameter.

In some embodiments of the present invention, the second member includes a projector module, and the step of driving the second member to lift and/or rotate relative to the first member by the magnetic element and the electromagnetic assembly according to the magnetic force generated by the magnetic pole direction further includes:

detecting the lifting height of the projector module;

and adjusting the projection size and the projection definition of the projector module according to the lifting height.

The present invention further provides a projector, including a rotary lifting mechanism, which is defined to include a lifting direction, and the rotary lifting mechanism includes:

a first member;

a second member detachably connected to the first member; and

wherein one of the first member and the second member is provided with an electromagnetic assembly, and the other of the first member and the second member is provided with a magnetic piece, at least one magnetic pole of the magnetic piece is arranged towards the magnetic pole of the electromagnetic assembly;

or, the projector includes a rotary lifting mechanism, the rotary lifting mechanism is controlled according to a control method of the rotary lifting mechanism, and the control method of the rotary lifting mechanism includes the following steps;

acquiring a control instruction of the rotary lifting mechanism;

The present invention further provides a sound box, wherein the sound box includes a rotary lifting mechanism, the rotary lifting mechanism is defined to include a lifting direction, and the rotary lifting mechanism includes:

a first member;

a second member detachably connected to the first member; and

or the sound box comprises a rotary lifting mechanism, the rotary lifting mechanism is controlled according to a control method of the rotary lifting mechanism, and the control method of the rotary lifting mechanism comprises the following steps;

acquiring a control instruction of the rotary lifting mechanism;

According to the technical scheme, the second member of the rotary lifting mechanism is detachably connected with the first member, the electromagnetic assembly and the magnetic piece are arranged on the first member and the second member, and the guide structure is further arranged, so that the first guide part of the first member is matched with the second guide part of the second member. When the rotary lifting mechanism is needed to realize rotary lifting, the electromagnetic assembly is electrified, and the defined current electrifying direction has a first current direction and a second current direction, wherein the two current directions are opposite. When the current that adopts first electric current direction to the electromagnetic component supplies power, the magnetic pole of electromagnetic component is the same with the magnetic pole magnetism of magnetic part to electromagnetic component and magnetic part repulsions each other, and then make second component and first component keep away from the motion each other (when first component and second component are vertical direction and place, it is static for there being a component promptly, the ascending state that a component rises, in this embodiment, settle first component in the holding surface), under the cooperation of first guide part and second guide part, the second component is rotatory ascending to the direction of keeping away from first component, thereby when other functional device are settled to first component, can improve the use functionality and the interest of being installed the component. When not needing to use, when can adopting the current supply of second current direction to the electromagnetism subassembly, the magnetic pole of electromagnetism subassembly is opposite with the magnetic pole magnetism of magnetic part to electromagnetism subassembly and magnetic part adsorb each other, and then make second component and first component be close to each other, under the cooperation of first guide part and second guide part, the direction rotation decline of second component orientation first component. Or, the power supply to the electromagnetic assembly is directly stopped, and at the moment, under the action of the self gravity of the first member and the cooperation of the first guide part and the second guide part, the second member rotates and descends towards the first member. Therefore, the technical scheme of the invention can increase the use functionality and the interestingness of the mounted member by the rotary lifting mechanism.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a projector according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of an embodiment of a rotary lifting mechanism of the present invention;

FIG. 3 is an exploded view of one embodiment of the rotary lift mechanism of the present invention;

FIG. 4 is a schematic structural diagram of an embodiment of a front housing of a main body of a rotary lifting mechanism according to the present invention;

FIG. 5 is a schematic structural diagram of a front housing of a module of the rotary lifting mechanism according to an embodiment of the present invention;

FIG. 6 is a top view of one embodiment of the main housing of the rotary lift mechanism of the present invention;

FIG. 7 is a bottom view of one embodiment of the module housing of the rotary lift mechanism of the present invention;

FIG. 8 is a diagram of the hardware architecture of an embodiment of the rotary lift mechanism of the present invention;

FIG. 9 is a flowchart illustrating the steps of a method for controlling the rotary lift mechanism according to an embodiment of the present invention;

FIG. 10 is a flowchart illustrating the steps of a method for controlling a rotary lift mechanism according to another embodiment of the present invention;

FIG. 11 is a flowchart illustrating the steps of a method for controlling a rotary lift mechanism according to another embodiment of the present invention;

fig. 12 is a flowchart illustrating a control method of a rotary lifting mechanism according to another embodiment of the present invention.

The reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name (R)
				100	Rotary lifting mechanism	22	Positioning cylinder
10	First member	221	Locating hole
				11	Electromagnetic assembly	23	Module shell
12	Main body outer casing	231	Module front shell
				121	Main body front shell	232	Module rear shell
1211	Second placing groove	233	Buckle
				122	Main body rear shell	30	Guide structure
123	Clamping groove	31	First guide part, guide post
				124	Sound outlet	311	Guide groove
13	Support frame	32	Second guide part, slide block
				20	Second member	1000	Projector with a light source
21	Magnetic member	300	Projection unit
				211	Through hole

The objects, features and advantages of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.

In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

Referring to fig. 1 to 3, the present invention provides a rotary lifting mechanism 100, wherein the rotary lifting mechanism 100 is defined to include a lifting direction, and the rotary lifting mechanism 100 includes:

a first member 10;

a second member 20, the second member 20 being detachably connected to the first member 10; and

a guide structure 30, wherein the guide structure 30 comprises a first guide portion 31 disposed on the first member 10 and a second guide portion 32 disposed on the second member 20, and the first guide portion 31 cooperates with the second guide portion 32 to lift and/or rotate the second member 20 or the first member 10 in a lifting direction;

wherein one of the first member 10 and the second member 20 is provided with an electromagnetic assembly 11, and the other of the first member 10 and the second member 20 is provided with a magnetic piece 21, at least one magnetic pole of the magnetic piece 21 being disposed toward a magnetic pole of the electromagnetic assembly 11.

The first member 10 may be moved up and down or rotated with respect to the second member 20, or may be moved up and down and rotated at the same time, depending on the shape of the guide portion.

In an embodiment of the invention, the first member 10 is provided with an electromagnetic assembly 11 and the second member 20 is provided with a magnetic piece 21. The first component 10 and the second component 20 are arranged in a horizontal position below, with one side of the first component 10 being arranged on the support surface and the second component 20 being arranged on the side of the first component 10 facing away from the support surface. The surface of the first member 10 contacting the supporting surface may be further provided with an anti-slip portion for ensuring the stability of the arrangement of the first member 10 and the supporting surface, thereby ensuring the effect of the rotation of the second member 20. Specifically, the anti-slip portion may be an anti-slip bump or an anti-slip corrugation, and the material of the anti-slip portion may be a flexible material, so as to increase the friction force between the first member 10 and the supporting surface. The first member 10 and the second member 20 are arranged in a substantially cylindrical shape with a circular (or polygonal) bottom surface, and the specific size can be set according to actual needs as long as the first member 10 and the second member 20 have a certain space for installing the functional device.

In an embodiment of the present invention, the magnetic member 21 may be formed by mixing a ferromagnetic material and a magnetic material to form the magnetic member 21, and then the magnetic member 21 is magnetized to have two opposite magnetic poles, or a permanent magnet is directly used as the magnetic member 21, or an electromagnet is used as the magnetic member 21, as long as two opposite magnetic poles are formed, so as to facilitate the magnetic driving of the electromagnetic assembly 11 of the first member 10. The magnetic pole of the magnetic member 21 can be exposed to the outer surface of the first member 10, thereby shortening the distance between the electromagnetic assembly 11 and the magnetic member 21 and improving the magnetic driving force therebetween.

And, the electromagnetic assembly 11 is an electromagnet in one embodiment, which is a device that is energized to generate an electromagnet. The core is wound with an electrically conductive winding adapted to its power, and the coil, which is energized with electric current, is magnetic like a magnet. It is usually formed in a bar or shoe shape or other suitable shape to make the core easier to magnetize. In this embodiment, at least one magnetic pole generated after the electromagnetic assembly 11 is powered on and the magnetic pole of the magnetic member 21 facing the electromagnetic assembly 11 are arranged at intervals along the lifting direction, so that the magnetic member 21 is magnetically driven after the electromagnetic assembly 11 is powered on, the resultant force direction of the magnetic force is ensured to the maximum extent, and the driving efficiency is improved. In addition, in order to demagnetize the electromagnet immediately after power failure, the electromagnet is usually made of soft iron or silicon steel materials with fast demagnetization. When the electromagnet is electrified, the electromagnet has magnetism, and the magnetism disappears along with the electrification after the electromagnet is powered off. Therefore, magnetic poles can be generated when electricity is supplied, and the magnetic piece 21 is driven magnetically, so that the rotating and lifting functions of the first member 10 and the second member 20 of the rotating and lifting mechanism 100 are ensured.

In this embodiment, the first guide portion 31 and the second guide portion 32 cooperate to lift and/or rotate the second member 20 or the first member 10 in the lifting direction, which defines the lifting direction as the height direction of the rotary lifting mechanism 100, and the method includes: 1. the second member 20 or the first member 10 is lifted and lowered in a lifting and lowering direction; 2. axial rotation of the second member 20 or the first member 10 about the lifting direction; 3. the second member 20 or the first member 10 is lifted and rotated in a lifting direction. In the first form, the first guide portion 31 and the second guide portion 32 may be a guide rod or a guide hole, respectively, which guides in the lifting direction; in the second case, the first guide portion 31 and the second guide portion 32 may be an annular guide rail and a slider, respectively; in the second case, the first guide portion 31 and the second guide portion 32 may be a guide rail and a slider, respectively, which may be helical.

And, in an embodiment of the present invention, the first guiding portion 31 may be a motor, and the second guiding portion 32 may be a transmission member, and a repulsive force is generated between the electromagnetic assembly 11 and the magnetic member 21, so that when the second member 20 moves away from the first member 10, the motor is also driven to move toward the second member 20, and at this time, an output shaft of the motor moves to drive the transmission member to rotate the second member 20, so as to realize the rotation and lifting of the second member 20 relative to the first member 10. The motor can be driven magnetically by a linear motor or other electromagnetic assemblies 11 and magnetic members 21, so long as the lifting is facilitated.

The technical scheme of the invention is that an electromagnetic assembly 11 is arranged on a first member 10 of a rotary lifting mechanism 100, a second member 20 is detachably connected with the first member 10, at least one magnetic pole of a magnetic part 21 of the second member 20 is arranged towards the magnetic pole of the electromagnetic assembly 11, and a guide structure 30 is further arranged, so that a first guide part 31 of the first member 10 is matched with a second guide part 32 of the second member 20. When it is desired to implement a rotational lift using the rotary lift mechanism 100, the electromagnetic assembly 11 is energized, defining an energizing direction of current having a first current direction and a second current direction, wherein the two current directions are opposite. When the electromagnetic assembly 11 is powered by a current in a first current direction, the magnetic poles of the electromagnetic assembly 11 and the magnetic poles of the magnetic member 21 are the same in magnetism, so that the magnetic member 21 is separated from and away from the electromagnetic assembly 11 due to a magnetic repulsive force, and further the second member 20 and the first member 10 move away from each other relatively (when the first member 10 and the second member 20 are placed in a vertical direction, that is, one member is stationary, and one member is in a rising state, in this embodiment, the first member 10 is placed on a supporting surface, and the second member 20 is separated from the first member 10), under the cooperation of the first guide portion 31 and the second guide portion 32, the second member 20 rotates and rises in a direction away from the first member 10, so that when the first member 10 is placed with other functional devices, the use functionality and the interestingness of the mounted member can be improved. When the electromagnetic assembly 11 is not needed to be used, when the electromagnetic assembly 11 is powered by current in the second current direction, the magnetic poles of the electromagnetic assembly 11 are opposite to the magnetic poles of the magnetic pieces 21, so that the magnetic pieces 21 are attracted by the electromagnetic assembly 11 to face the electromagnetic assembly 11, the second member 20 and the first member 10 are further close to each other, and the second member 20 rotates and descends towards the first member 10 under the cooperation of the first guide portion 31 and the second guide portion 32. Alternatively, the electromagnetic assembly 11 is directly powered off, and at this time, the first member 10 rotates and descends in the direction of the first member 10 by the action of its own weight and the cooperation of the first guide portion 31 and the second guide portion 32, and the second member 20 rotates and descends in the direction of the first member 10. Thus, the technical scheme of the invention can increase the use functionality and the interestingness of the mounted member by the rotary lifting mechanism 100.

Referring to fig. 2 to 5, in some embodiments of the present invention, one of the first guide portion 31 and the second guide portion 32 is a guide post 31, the guide post 31 extends along the ascending and descending direction, a side surface of the guide post 31 is provided with a guide groove 311 spirally arranged along a circumferential direction of the guide post 31, and the guide groove 311 extends along the ascending and descending direction;

the other of the first guide portion 31 and the second guide portion 32 is a slide block 32, and the slide block 32 is slidably disposed in the guide groove 311. In this embodiment, by providing the guide posts 31 and the guide grooves 311 of the guide posts 31 and further providing the slide blocks 32 capable of sliding in the guide grooves 311, a repulsive force is generated between the electromagnetic assembly 11 and the magnetic member 21, when the second member 20 moves upward relative to the first member 10, the slide blocks 32 are also fixedly connected to the second member 20, and are also driven to move in a direction away from the first member 10. Since the slide block 32 is slidably received in the guide groove 311, the slide block 32 moves along the extending direction of the guide groove 311. The guide slot 311 is spirally disposed along the circumferential direction of the guide post 31 and extends along the length direction (i.e., the lifting direction) of the guide post 31, so that the sliding block 32 is spirally lifted along the circumferential direction of the guide post 31, and the second member 20 is further driven to spirally lift relative to the first member 10. It will be appreciated that the guide post 31 and the slide block 32 in this embodiment are similar to a screw structure, the guide post 31 is similar to a screw of the screw structure, the slide block 32 is similar to a nut of the screw structure, and the pitch of the screw is relatively sparse in this embodiment, so that the nut will rotate along the thread track on the screw when the device mounted on the nut is driven to move. And, the positions of the guide posts 31 and the sliding blocks 32 can be set according to the actual production requirement, as long as the structure of the first member 10 and the second member 20 is stable and the rotation and the lifting of the two are facilitated, and the guide grooves 311 can also be set in other shapes such as a circle or a straight line, so as to make the second member 20 rotate or linearly lift relative to the first member 10.

Referring to fig. 2 to 4, in some embodiments of the present invention, one end of the guide post 31 is fixedly connected to the first member 10; the second member 20 is formed with a positioning hole 221, the sliding block 32 is disposed on the hole wall of the positioning hole 221, and the positioning hole 221 is sleeved on the guiding column 31, so that the sliding block 32 can be slidably received in the guiding groove 311. By fixedly connecting one end of the guide post 31 with the first member 10, the guide post 31 has a longer side surface, thereby facilitating the increase in the setting length of the guide groove 311 and the processing of the guide groove 311. The guide groove 311 is further made to rotate a larger angle in the circumferential direction of the guide post 31, so that the second member 20 rotates a larger angle with respect to the first member 10. And, the positioning hole 221 is provided on the second member 20, on one hand, the sliding block 32 is well accommodated in the guide slot 311, which ensures the sliding effect of the sliding block 32, and on the other hand, the second member 20 moves in the extending direction of the guide post 31 (since the extending direction of the guide post 31 is the same as the lifting direction, the efficiency of driving between the electromagnetic assembly 11 and the magnetic member 21 by electromagnetic force is improved).

Referring to fig. 3 and 5, in some embodiments of the present invention, the second member 20 includes a module housing 23 and a positioning cylinder 22 disposed in the module housing 23, the positioning cylinder 22 forms the positioning hole 221, one end of the positioning hole 221 penetrates through a surface of the housing, the magnetic member 21 forms a through hole 211, and the magnetic member 21 is fixed to an outer side of the positioning cylinder 22 in a sleeved manner. Thereby form the installation cavity of settling functional device through setting up module shell 23, be convenient for to the protection of functional device, for example, install the projecting apparatus module in module shell 23, when module shell 23 is rotatory when rising relatively first component 10, the projecting apparatus module can be along with module shell 23 common rotary motion, realizes the projection of different angles, improves functional and interesting. And, through setting up the locating hole 221 that the locating cylinder 22 formed, improved the hole wall length of locating hole 221, and then improved the area of contact of locating hole 221 and guide post 31, guarantee the lift efficiency of second component 20 along the direction of going up and down. In this embodiment, the magnetic member 21 is disposed inside the module housing 23, so as to avoid the magnetic influence of external factors on the magnetic member 21, and ensure the stability of magnetic driving between the electromagnetic assembly 11 and the magnetic member 21. And, the magnetic part 21 can be fixed well by the way of socket joint fixing, so that the magnetic part 21 drives the second member 20 to move when the repulsion or attraction is between the electromagnetic component 11 and the magnetic part 21. In an embodiment, the magnetic member 21 and the second member 20 can be fixed by using a glue, specifically, the glue is glue.

In an embodiment of the present invention, the positioning hole 221 is a blind hole, and one end of the guide slot 311 away from the first member 10 is disposed in a penetrating manner, so that when the first member 10 and/or the second member 20 need to be used separately, the second member 20 can be rotated to make the second member 20 be screwed out along the end of the guide slot 311 of the guide post 31 away from the first member 10, so that the first member 10 and/or the second member 20 can be used separately, and the functionality and the interest of the device can be improved.

Referring to fig. 3 and 6, in some embodiments of the present invention, the module case 23 is used for mounting a projector module, the module case 23 includes a module front case 231 and a module rear case 232 connected to the module front case 231, and the positioning cylinder 22 is disposed on the module front case 231 or the module rear case 232; through the module front shell 231 and the module rear shell 232 that the components of a whole that can function independently set up, be convenient for settle functional device in module shell 23 to when the device in module shell 23 damages, can in time change functional device.

In some embodiments of the present invention, the module housing 23 is provided with a first positioning groove surrounding the positioning cylinder 22, and the magnetic member 21 is disposed in the first positioning groove when sleeved outside the positioning cylinder 22. The arrangement of the first placement groove can increase the contact area between the magnetic part 21 and the second component 20, and the fixation effect can be improved when the glue joint part is adopted for connection or the interference connection is adopted.

Referring to fig. 4 and 7, in some embodiments of the invention, the first member 10 includes a main body housing 12 and a bracket 13 disposed within the main body housing 12, the bracket 13 being configured to secure the electromagnetic assembly 11. Can fix electromagnetic component 11 well through setting up support 13, this support 13 specifically can be for the support 13 of diaphragm and main body cover 12 to guaranteed with main body cover 12's area of contact, improved fixed effect, and separate main body cover 12 and form different installation space, improve the convenience of device installation.

Referring to fig. 3, 4 and 7, in some embodiments of the present invention, the main body housing 12 includes a main body front casing 121 and a main body rear casing 122 connected to the main body front casing 121, the main body housing 12 may be used to mount a speaker unit for use as a sound box, the main body housing 12 may be provided with a sound outlet 124 of the speaker, and the support 13 is provided on the main body front casing 121 or the main body rear casing 122; the main body front shell 121 and the main body rear shell 122 which are separately arranged facilitate the placement of functional devices in the main body housing 12, and when the devices in the main body housing 12 are damaged, the functional devices can be replaced in time.

In some embodiments of the present invention, the main body case 12 is provided with a second seating groove 1211, and the electromagnetic assembly 11 is seated in the second seating groove 1211. The second disposition groove 1211 may increase a contact area of the electromagnetic assembly 11 with the first member 10, and may improve a fixing effect when the coupling is performed by the glue or the interference coupling is performed.

In an embodiment, the module housing 23 and the main body housing 12 may be made of plastic (the plastic may be hard plastic, such as ABS, POM, PS, PMMA, PC, PET, PBT, PPO, etc.), other alloy materials, and the like. Or a mixture of metal material and plastic material, as long as it is possible to improve the stability of the module case 23 and the main body case 12 well and facilitate the movement of the first member 10 and/or the second member 20.

Referring to fig. 4 to 7, in some embodiments of the present invention, one of the module housing 23 and the main body housing 12 is provided with a latch 233, and the other of the module housing 23 and the main body housing 12 is provided with a slot 123, and the latch 233 is latched to the slot 123 to detachably connect the module housing 23 and the main body housing 12. In this embodiment, the fastener 233 and the slot 123 are arranged to allow the module housing 23 to be fixedly connected to the main body housing 12 without being separated from each other, so that the module housing 23 and the main body housing 12 have good installation stability.

Referring to fig. 6 and 7, in some embodiments of the present invention, the locking groove 123 is disposed on a surface of the main body housing 12 facing the module housing 23, and the locking buckle 233 is disposed on a surface of the module housing 23 facing the main body housing 12, so as to ensure that the exterior of the module housing 23 and the main body housing 12 is flat and the module housing 23 and the main body housing 12 can be better fixed to each other.

Referring to fig. 6 and 7, in some embodiments of the present invention, the number of the card slots 123 and the number of the latches 233 are multiple, the multiple card slots 123 are arranged on the surface of the main body housing 12 at intervals, the multiple latches 233 are arranged on the surface of the module housing 23 at intervals, one of the latches 233 is connected to one of the card slots 123 in a matching manner, and two sides of one of the card slots 123 are different from each other in a distance from the periphery of the main body housing 12 to the other card slot 123. When the number of the buckles 233 and the number of the card slots 123 are two, the distance from the slot walls on both sides of one card slot 123 to the other card slot 123 is different, so that the uniqueness of the assembly of the main body housing 12 and the module housing 23 is realized, and the better butt joint is realized. Or, a radially thicker catch 233 and a radially thinner catch 123 are provided, so as to realize the uniqueness of the assembly of the main body housing 12 and the module housing 23 and realize better butt joint.

In an embodiment of the present application, when the number of the card slots 123 is three or more, the distance between one card slot 123 and two adjacent card slots 123 is set to be different, so as to realize the uniqueness of the assembly of the main body housing 12 and the module housing 23 and realize better butt joint.

As shown in fig. 8, a memory 1005, which is a kind of computer storage medium, may include therein an operating system, a network communication module, a user interface module, and a control program of the rotary lifting mechanism 100.

In the terminal shown in fig. 8, the network interface 1004 is mainly used for connecting to a backend server and performing data communication with the backend server; the user interface 1003 is mainly used for connecting a client (user side) and performing data communication with the client; and the processor 1001 may be configured to call up a control program of the rotary lifting mechanism 100 stored in the memory 1005 and perform the following operations:

acquiring a control instruction of the rotary lifting mechanism 100;

controlling the magnetic pole direction of the electromagnetic assembly 11 according to the control instruction;

the magnetic member 21 and the electromagnetic assembly raise and/or rotate the second member 20 with respect to the first member 10 according to the magnetic force generated by the magnetic pole direction.

Further, the processor 1001 may call the control program of the rotary lifting mechanism 100 stored in the memory 1005, and also perform the following operations:

when the control command is confirmed to be an ascending command, controlling the electromagnetic assembly 11 to be electrified with current in a first current direction so that the electromagnetic assembly 11 repels the magnetic member 21;

confirming a rising height parameter according to the rising instruction;

controlling the value of the repulsive force of the electromagnetic assembly 11 according to the current parameter.

when the control command is confirmed to be a descending command, the electromagnetic assembly 11 is controlled to be electrified with current in a second current direction so that the electromagnetic assembly 11 attracts the magnetic piece 21, wherein the first current direction is opposite to the second current direction;

and controlling the value of the adsorption force of the electromagnetic assembly 11 according to the current parameter.

Further, the second member 20 includes a projector module, and the processor 1001 may call the control program of the rotary lifting mechanism 100 stored in the memory 1005, and also perform the following operations:

detecting the lifting height of the projector module;

Referring to fig. 9, the present invention further proposes a control method of the rotary lifting mechanism 100, the control method of the rotary lifting mechanism 100 comprising the steps of;

step S10, acquiring a control command for the rotary lifting mechanism 100;

specifically, the user may send a control instruction to the rotary elevating mechanism 100 through a controller (including a remote controller, a mobile terminal, and the like), where the control instruction includes an ascending instruction, a descending instruction, a rotating instruction, a starting instruction, a power-off instruction, and the like. The ascending command comprises a plurality of ascending height gears, and the descending command also comprises a plurality of descending height gears. If there is a mutual spacing between the first member 10 and the second member 20 before the user gives an activation instruction, the spacing should be opened so that the first member 10 and the second member 20 can move relative to each other. For example, when the snap 233 and the catch 123 are fixed to each other between the first member 10 and the second member 20, the first member 10 and the second member 20 are relatively rotated to separate the snap 233 and the catch 123 from each other. The user's activation command may be a command for activating the power switch, as long as the rotary elevating mechanism 100 can be controlled well.

Step S20, controlling the magnetic pole direction of the electromagnetic assembly 11 according to the control command; it will be appreciated that the electromagnetic assembly 11 is an electromagnet, which is a device that is energized to generate an electromagnet. The outside of the core is wound with a conductive winding matching its power, and the coil energized with current has magnetism like a magnet, thereby forming a magnetic pole. Since the ascending and descending of the second member 20 with respect to the first member 10 are driven by magnetic forces in different directions, the magnetic pole directions of the electromagnetic assembly 11 are controlled to be different by different control commands, so that the magnetic forces in different directions exist between the electromagnetic assembly 11 and the magnetic member 21 in the corresponding commands, thereby enabling the first member 10 and the second member 20 to move relatively well. The electromagnetic assembly 11 has two magnetic poles, i.e. an N pole and an S pole, and can control the direction of the magnetic induction line by controlling the directions of the N pole and the S pole, and in one embodiment, the direction of the magnetic poles can be changed by rotating the electromagnetic assembly 11.

In step S30, the magnetic member 21 moves up and down according to the magnetic pole direction, and drives the second member 20 to move up and down and/or rotate relative to the first member 10. The magnetic member 21 has a magnetic pole facing the electromagnetic assembly 11, and when the electromagnetic assembly 11 is energized, two magnetic poles are generated, and the first member 10 and the second member 20 are driven to be separated from each other by the principle that the magnetic poles repel each other when the magnetic poles are the same in magnetism and attract each other when the magnetic poles are different in magnetism. The guide structure 30 is further provided to allow the first member 10 and the second member 20 to relatively rotate when they are lifted. In an embodiment of the present invention, the guiding member includes a first guiding portion 31 and a second guiding portion 32, the first guiding portion 31 and the second guiding portion 32 are mutually matched, in this embodiment, the guiding slot 311 is spirally arranged along the circumference of the guiding column 31, so that the first member 10 and the second member 20 rotate when moving relatively, in other embodiments, the guiding slot 311 may be arranged in other shapes, such as a circle or a straight line, so that the second member 20 moves rotationally or moves linearly relative to the first member 10.

In an embodiment of the present invention, the first guiding portion 31 may be a motor, and the second guiding portion 32 may be a transmission member, and a repulsive force is generated between the electromagnetic assembly 11 and the magnetic member 21, so that when the second member 20 moves away from the first member 10, the motor is also driven to move toward the second member 20, and an output shaft of the motor moves to drive the transmission member to rotate the second member 20, so as to realize the rotation lifting of the second member 20 relative to the first member 10. The motor can be driven magnetically by a linear motor or other electromagnetic assemblies 11 and magnetic members 21, so long as the lifting is facilitated.

In some embodiments of the present invention, one of the first guide portion 31 and the second guide portion 32 is a guide post 31, the guide post 31 extends along the ascending and descending direction, a side surface of the guide post 31 is provided with a guide groove 311 spirally arranged along a circumferential direction of the guide post 31, and the guide groove 311 extends along the ascending and descending direction;

the other of the first guide portion 31 and the second guide portion 32 is a slide block 32, and the slide block 32 is slidably disposed in the guide groove 311. In this embodiment, by providing the guide post 31 and the guide slot 311 on the guide post 31, and further providing the slide block 32 capable of sliding in the guide slot 311, a repulsive force is generated between the electromagnetic assembly 11 and the magnetic member 21, when the second member 20 moves upward relative to the first member 10, the slide block 32 is also fixedly connected to the second member 20, and therefore is also driven to move in a direction away from the first member 10. Since the slide block 32 is slidably received in the guide groove 311, the slide block 32 moves along the extending direction of the guide groove 311. The guide slot 311 is spirally disposed along the circumferential direction of the guide post 31 and extends along the length direction (i.e., the lifting direction) of the guide post 31, so that the sliding block 32 is spirally lifted along the circumferential direction of the guide post 31, and the second member 20 is further driven to spirally lift relative to the first member 10. It will be appreciated that the guide post 31 and the slide block 32 in this embodiment are similar to a screw structure, the guide post 31 is similar to a screw of the screw structure, the slide block 32 is similar to a nut of the screw structure, and the pitch of the screw is relatively sparse in this embodiment, so that the nut will rotate along the thread track on the screw when the device mounted on the nut is driven to move. And, the positions of the guide posts 31 and the sliding blocks 32 can be set according to the actual production requirement, as long as the structural stability of the first member 10 and the second member 20 is facilitated, and the rotation lifting of the two is facilitated. Thus, the technical scheme of the invention can increase the use functionality and the interestingness of the mounted member by the rotary lifting mechanism 100.

Referring to fig. 10, in some embodiments of the present invention, the step of controlling the magnetic pole direction of the electromagnetic assembly 11 of the first member 10 according to the control command further comprises:

step S21, when the control command is determined to be an ascending command, controlling the electromagnetic assembly 11 to be energized with a current in a first current direction so that the electromagnetic assembly 11 repels the magnetic member 21; in this embodiment, the rising instruction and the falling instruction can be distinguished by adopting different signal types for the rising instruction and the falling instruction, and when a user inputs the rising instruction, the contact signal can be used as the rising instruction signal to further control the electrifying direction of the electromagnetic assembly 11. In an embodiment, the power-on direction of the electromagnetic component 11 can be controlled by arranging a double-pole double-throw switch in the circuit, arranging two sets of output contacts (4 contacts in total) at two ends of the electromagnetic component 11, and lapping different contacts through the double-pole double-throw switch, thereby realizing different power-on directions.

Step S22, confirming a lifting height parameter according to the lifting command; in this embodiment, taking the ascending instruction as a contact signal as an example, the contact signal includes a high-frequency contact signal, a medium-frequency contact signal, and a low-frequency contact signal, and the contact signals with different frequencies and the ascending height parameters have a one-to-one mapping relationship by establishing a mapping table. When a user uses the electromagnetic lifting device, the lifting mechanism selects a lifting instruction, acquires a contact signal to control the electromagnetic assembly 11 to supply power in a first current direction, and when the user selects a lifting gear, the lifting mechanism acquires the frequency of the contact signal to control a parameter of lifting height, wherein the parameter of lifting height is the parameter corresponding to the lifting gear selected by the user.

Step S23, confirming the current parameter of the current in the first current direction according to the rising height parameter; since the electromagnetic force of the electromagnetic assembly 11 can be different due to different current parameters, when the required lifting height is larger, the electromagnetic force required between the electromagnetic assembly 11 and the magnetic member 21 is larger, so that a larger current is required, and when the required lifting height is smaller, the electromagnetic force required between the electromagnetic assembly 11 and the magnetic member 21 is smaller, so that a smaller current can pass. The current parameter and the rising height can also have a corresponding relationship by establishing a mapping table. Or by arranging a distance sensor, the size of the current parameter is controlled by the detection height of the distance sensor, and the stability that the first member 10 and the second member 20 are separated from each other (in a lifting state) is ensured.

Step S24, controlling the magnitude of the repulsive force of the electromagnetic assembly 11 according to the current parameter. The determined current parameter is output to the solenoid assembly 11 to control the solenoid assembly 11 to operate in accordance with the received current parameter. So set up, according to the electric current parameter of confirming control electromagnetism subassembly 11 to ensure that electromagnetism subassembly 11 produces suitable magnetic force, and then keep magnetic part 21 at certain height, thereby guarantee elevating system's normal operating.

When the electromagnetic assembly 11 is powered by a current in a first current direction, the magnetic poles of the electromagnetic assembly 11 and the magnetic poles of the magnetic piece 21 are the same, so that the electromagnetic assembly 11 pushes the magnetic piece 21 away from the electromagnetic assembly 11, and further the second member 20 and the first member 10 move away from each other (when the first member 10 and the second member 20 are placed in a vertical direction, that is, when one member is stationary, one member rises, in this embodiment, the first member 10 is placed on a supporting surface, and the second member 20 moves away from the first member 10), under the cooperation of the first guide portion 31 and the second guide portion 32, the second member 20 rotates and rises in a direction away from the first member 10, so that when the first member 10 places other functional devices, the use functionality and the interestingness of the installed member can be improved.

Referring to fig. 11, in some embodiments of the present invention, the step of controlling the magnetic pole direction of the electromagnetic assembly 11 of the first member 10 according to the control command further comprises:

step S25, when it is determined that the control command is a down command, controlling the electromagnetic assembly 11 to be energized with a current in a second current direction so that the electromagnetic assembly 11 attracts the magnetic member 21, wherein the first current direction is opposite to the second current direction; in this embodiment, the rising instruction and the falling instruction can be distinguished by adopting different signal types for the rising instruction and the falling instruction, and when a user inputs the falling instruction, the voltage signal can be used as the falling instruction signal to further control the electrifying direction of the electromagnetic assembly 11. In an embodiment, the power-on direction of the electromagnetic component 11 can be controlled by arranging a double-pole double-throw switch in the circuit, arranging two sets of output contacts (4 contacts in total) at two ends of the electromagnetic component 11, and lapping different contacts through the double-pole double-throw switch, thereby realizing different power-on directions. It will be appreciated that when the first current signal is flowing clockwise in the circuit, the second current signal is flowing counterclockwise.

Step S26, confirming a descending height parameter according to the descending instruction; in this embodiment, taking the ascending command as a voltage signal as an example, the voltage signal includes a high-frequency voltage signal, an intermediate-frequency voltage signal, and a low-frequency voltage signal (the frequencies HZ of the three voltage signals are different), and the voltage signals with different frequencies and the descending height parameter have a one-to-one mapping relationship by establishing a mapping table. When the electromagnetic assembly is used by a user, a descending instruction is selected, the lifting mechanism acquires a voltage signal to control the electromagnetic assembly 11 to supply power in a first current direction, when the user selects a descending gear, the lifting mechanism acquires the frequency of the voltage signal to control a parameter of descending height, and the parameter of descending height is the parameter corresponding to the descending gear selected by the user.

Step S27, confirming the current parameter of the current in the second current direction according to the descending height parameter; since the electromagnetic force of the electromagnetic assembly 11 can be different according to different current parameters, when the required descent height is larger, the electromagnetic force required between the electromagnetic assembly 11 and the magnetic member 21 is larger, so that a larger current is required, and when the required descent height is smaller, the electromagnetic force required between the electromagnetic assembly 11 and the magnetic member 21 is smaller, so that a smaller current can pass. The current parameter and the descending height can also have a corresponding relationship by establishing a mapping table. Or by providing a distance sensor, the magnitude of the current parameter is controlled by the detection height of the distance sensor, and the stability that the first member 10 and the second member 20 are separated from each other (in a descending state) is ensured.

Step S28, controlling the value of the attraction force of the electromagnetic assembly 11 according to the current parameter. The determined current parameter is output to the solenoid assembly 11 to control the solenoid assembly 11 to operate in accordance with the received current parameter. So set up, according to the electric current parameter of confirming control electromagnetism subassembly 11 to ensure that electromagnetism subassembly 11 produces suitable magnetic force, and then keep magnetic part 21 at certain height, thereby guarantee elevating system's normal operating.

When the electromagnetic assembly 11 is not needed to be used, when the electromagnetic assembly 11 is powered by current in the second current direction, the magnetic poles of the electromagnetic assembly 11 are opposite to the magnetic poles of the magnetic pieces 21, so that the magnetic pieces 21 are attracted by the electromagnetic assembly 11 to face the electromagnetic assembly 11, the second member 20 and the first member 10 are further close to each other, and the second member 20 rotates and descends towards the first member 10 under the cooperation of the first guide portion 31 and the second guide portion 32. Thereby, when the first member 10 is provided with other functional devices, the use functionality and the interest of the mounted member can be improved.

Referring to fig. 12, in some embodiments of the present invention, the second member 20 includes a projector module, the first member 10 is a main body of a sound box and includes a speaker unit, and the step of moving the magnetic part 21 of the second member 20 up and down according to the magnetic pole direction and driving the second member 20 to lift and/or rotate relative to the first member 10 further includes:

step S40, detecting the lifting height of the projector module; in the present embodiment, the sound box main body and the projector module are combined, and the sound box main body is provided with an image display device for forming an image corresponding to a supplied display image signal, an image signal processing unit for generating the display image signal which can be supplied to the image display device based on an input image signal supplied from an image supply device, and a projection unit 300 for projecting the image formed by the image display device. Make audio amplifier main part and projecting apparatus module combine, the audio amplifier main part has the projection function. And, the second member 20 can be provided with a position sensor, and the relative distance between the projection module and the first member 10 can be detected through the position sensor, so that the lifting height of the projection module can be obtained.

And step S50, adjusting the projection size and the projection definition of the projector module according to the lifting height. The image signal processing unit is configured to adjustably set an image area for forming an image represented by the input image signal in a central portion of an image display area of the image display device and a mask display area for forming an image of a specific color in an outer peripheral portion of the image area, based on a parameter indicating a projection size set by a user, and to generate the display image signal so that the image represented by the input image signal is reduced or enlarged so that the size of the image represented by the input image signal is suitable for the size of the image area and the display image signal is displayed in the mask display area when the display image signal is generated based on the input image signal.

The projection module of the invention can adjust the projection size according to the size of the image area and the masking display area which are adjustably set according to the parameter representing the projection size. Thus, the projection size of the image by the projector 1000 can be easily adjusted. Here, the image signal processing unit may generate a resolution-converted image signal obtained by enlarging or reducing the image represented by the input image signal so that the size of the image represented by the input image signal is suitable for the size of the image display area when the size of the image represented by the input image signal is different from the size of the image display area, or may reduce the image represented by the resolution-converted image signal so that the size of the image represented by the resolution-converted image signal is suitable for the size of the image area. In this way, even if the sizes of the images represented by the input image signal are different, the projection sizes can be substantially the same as long as the values of the parameters representing the projection sizes are the same. That is, the projection size can be adjusted with the size of the image represented by the input image signal. In addition, the image signal processing unit may generate the display image signal so that a partial image corresponding to the size of the image display area is displayed in the image display area in an image enlarged so as to fit the size of the image area when the size of the image area set according to the parameter is larger than the image display area. Thus, not only the projection size can be reduced but also enlargement can be performed. Further through the plane of the height change projection that goes up and down, can guarantee like this that when changing the height of second component 20, its projection size can be adjusted to the projection module and the definition of assurance projection.

The present invention further provides a projector 1000, where the projector 1000 includes any one of the above-mentioned rotary lifting mechanisms 100, or includes the rotary lifting mechanism 100 controlled by the control method of any one of the above-mentioned rotary lifting mechanisms 100, and since the projector 1000 adopts all the technical solutions of all the above-mentioned embodiments, the projector at least has all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, and details are not repeated here.

The present invention further provides a sound box (not shown), where the sound box includes any one of the above-mentioned rotary lifting mechanisms 100, or includes the rotary lifting mechanism 100 controlled by the control method of any one of the above-mentioned rotary lifting mechanisms 100, a main body of the sound box is the first component 10, a speaker unit of the sound box is disposed inside the main body housing 12, a sound outlet 124 is disposed on the main body housing 12, and the second component 20 is a projector module or a camera module, so that the sound box has the projector module or the camera module that is movably connected, which increases functionality and interestingness of the sound box.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. A rotary lifting mechanism, the rotary lifting mechanism defined to include a lifting direction, the rotary lifting mechanism comprising:

a first member;

a second member detachably connected to the first member; and

the guide structure comprises a first guide part arranged on the first member and a second guide part arranged on the second member, and the first guide part is matched with the second guide part so as to enable the second member or the first member to lift and rotate along the lifting direction;

wherein one of the first member and the second member is provided with an electromagnetic assembly, and the other of the first member and the second member is provided with a magnetic piece, at least one magnetic pole of the magnetic piece is arranged towards the magnetic pole of the electromagnetic assembly; an attractive force or a repulsive force along the lifting direction is formed between the electromagnetic assembly and the magnetic part;

one of the first guide part and the second guide part is a guide post, the guide post extends along the lifting direction, a guide groove spirally arranged along the circumferential direction of the guide post is arranged on the side surface of the guide post, and the guide groove extends along the lifting direction;

the other one of the first guide part and the second guide part is a sliding block which is slidably arranged in the guide groove;

wherein, one of the first member and the second member is used for installing a loudspeaker single body, and the other one is used for installing a projector module.

2. The rotary lift mechanism of claim 1, wherein one end of the guide post is fixedly connected to the first member;

3. The rotary lifting mechanism according to claim 2, wherein the second member includes a module housing and a positioning cylinder disposed in the module housing, the positioning cylinder forms the positioning hole, one end of the positioning hole penetrates through a surface of the housing, the magnetic member or the electromagnetic assembly forms a through hole, and one of the magnetic member or the electromagnetic assembly is fixed to an outer side of the positioning cylinder in a sleeved manner.

4. The rotary lifting mechanism according to claim 3, wherein the module housing comprises a module front case and a module rear case connected to the module front case, the positioning cylinder being provided to the module front case or the module rear case;

5. A rotary lifting mechanism according to claim 3 or claim 4, wherein the first member comprises a main body housing and a bracket provided within the main body housing for securing the other of the electromagnetic assembly or the magnetic member.

6. The rotary lifting mechanism according to claim 5, wherein the main body housing comprises a main body front shell and a main body rear shell connected to the main body front shell, the bracket being provided to the main body front shell or the main body rear shell;

7. The rotary lifting mechanism according to claim 5, wherein one of the module housing and the main body housing is provided with a catch, and the other of the module housing and the main body housing is provided with a catch, the catch being caught in the catch to detachably connect the module housing and the main body housing.

8. A control method of a rotary lifting mechanism, based on the rotary lifting mechanism according to any one of claims 1 to 7, comprising the steps of;

acquiring a control instruction of the rotary lifting mechanism;

the magnetic piece and the electromagnetic assembly drive the second component to lift and rotate relative to the first component according to the magnetic force generated by the magnetic pole direction.

9. The method of controlling a rotary lift mechanism according to claim 8, wherein the step of controlling the magnetic pole direction of the electromagnetic assembly according to the control command comprises:

confirming a rising height parameter according to the rising instruction;

10. The method of controlling a rotary lifting mechanism of claim 9, wherein the step of controlling the direction of the magnetic poles of the electromagnetic assembly in accordance with the control command further comprises:

11. The method as claimed in any one of claims 8 to 10, wherein the second member comprises a projector module, and the step of driving the second member to ascend, descend and rotate relative to the first member by the magnetic force generated by the magnetic member and the electromagnetic assembly according to the magnetic pole direction further comprises the following steps:

detecting the lifting height of the projector module;

12. A projector characterized in that it comprises a rotary elevating mechanism according to any one of claims 1 to 7;

alternatively, the projector includes a rotary elevating mechanism that is controlled according to the control method of the rotary elevating mechanism according to any one of claims 8 to 11.

13. An acoustic enclosure, characterized in that it comprises a rotary elevating mechanism according to any one of claims 1 to 7;

alternatively, the sound box includes a rotary elevating mechanism that is controlled according to a control method of the rotary elevating mechanism according to any one of claims 8 to 11.