CN215268704U - Suspension structure, speaker and projection equipment - Google Patents

Abstract

The present disclosure relates to a suspension structure, a speaker device and a projection apparatus, including a base (100) and a suspension body (200) suspended above the base (100), one of the base (100) and the suspension body (200) is provided with a plurality of first coils (310), and the other is provided with at least one first magnet (320) corresponding to the first coils (310), the first coils are used for being electrified to generate a driving force for horizontally moving the suspension body relative to the base, wherein the directions of the driving forces generated by at least two of the plurality of first coils are different. The suspension body can move horizontally to any position in the horizontal direction by arranging a plurality of first coils and enabling the suspension body to move horizontally in at least two directions. The action of the first coil and the first magnet may act to return the suspension to a steady state position against an external force. The suspension body can also generate any motion trail under the action of the first coil and the first magnet, so that the visual effect of the suspension structure can be improved.

Description

Suspension structure, speaker and projection equipment

Technical Field

The present disclosure relates to the field of suspension technologies, and in particular, to a suspension structure, a speaker device, and an audio output device.

Background

The suspension technology is a technology for overcoming gravity by using external force to suspend an object, and the application of the suspension technology is increasing at present, such as suspension sound, suspension globe, suspension exhibition stand and the like. When the suspensoid in the suspension structure receives the exogenic action from the side, if receive vibration, wind-blowing or collision etc. the stable state of suspensoid is unbalance easily to lead to the suspensoid to drop, both influenced user experience, lead to the product to drop the damage again easily.

SUMMERY OF THE UTILITY MODEL

An object of the present disclosure is to provide a suspension structure, a speaker device having the suspension structure, and a projection apparatus equipped with the speaker device, so as to at least partially solve the above technical problems.

In order to achieve the above object, the present disclosure provides a levitation structure including a base and a levitation body levitated above the base, one of the base and the levitation body is provided with a plurality of first coils, and the other is provided with at least one first magnet corresponding to the first coils, the first coils being used for being energized to generate a driving force for horizontally moving the levitation body with respect to the base, wherein the directions of the driving forces generated by at least two of the plurality of first coils are different.

Optionally, the first magnet is a bipolar magnet with magnetic poles distributed up and down, the first coil is a runway-type coil, and one side of the runway-type coil is coated with a shielding member.

Optionally, the first magnet is configured as a ring magnet, and a plurality of the first coils are correspondingly and uniformly distributed in the circumferential direction of the ring magnet.

Optionally, the suspension structure further includes a second magnet and a second coil for suspending the suspension body above the base, one of the second magnet and the second coil is disposed inside the first magnet, and the other is disposed inside an annular space surrounded by the plurality of first coils.

Optionally, a plurality of the first coils are disposed at equal intervals in a circumferential direction of the levitation body or the base.

Optionally, the suspension structure further includes a circuit board electrically connected to the plurality of first coils and a TMR sensor for sensing a magnetic field change of each of the first coils, the circuit board is configured to control an energization direction and a current magnitude of the corresponding first coil according to feedback information of the TMR sensor.

Optionally, the first coil is disposed on the suspension body and the first magnet is disposed on the base.

Optionally, a wireless charging battery for supplying power to the first coil is further disposed on the suspension body.

According to the second aspect of the present disclosure, there is also provided a speaker device, including the suspension structure provided by the present disclosure, in which a speaker is disposed.

According to a third aspect of the present disclosure, there is also provided a projection apparatus including the speaker device provided by the present disclosure.

Through the technical scheme, the first coil can be subjected to ampere force in the magnetic field of the first magnet after being electrified, and the borne ampere force can drive the suspension body to move horizontally. The suspension body can move horizontally to any position in the horizontal direction by arranging a plurality of first coils and enabling the suspension body to move horizontally in at least two directions. When the suspension body is subjected to external forces such as vibration, wind blowing and collision to generate deviation in the horizontal direction relative to the base, the action of the first coil and the first magnet can resist the external forces to restore the suspension body to a stable position. The suspension body can also generate any motion trail under the action of the first coil and the first magnet, such as a rotating or 8-shaped motion trail, so that the visual effect of the suspension structure can be improved.

Additional features and advantages of the disclosure will be set forth in the detailed description which follows.

Drawings

The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure without limiting the disclosure. In the drawings:

FIG. 1 is a schematic diagram of a suspension structure provided in an exemplary embodiment of the present disclosure;

FIG. 2 is a cross-sectional view of a suspension structure provided in an exemplary embodiment of the present disclosure;

FIG. 3 is a schematic view of a suspension body provided in an exemplary embodiment of the present disclosure in a centered position;

FIG. 4 is a schematic illustration of suspension deflection provided by an exemplary embodiment of the present disclosure;

fig. 5 is a magnetic flux distribution diagram of a first magnet provided in an exemplary embodiment of the present disclosure.

Description of the reference numerals

100-base, 200-suspension, 310-first coil, 311-shield, 320-first magnet, 400-rechargeable battery, 500-circuit board, 501-wire, 600-TMR sensor, 710-second coil, 720-second magnet.

Detailed Description

The following detailed description of specific embodiments of the present disclosure is provided in connection with the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present disclosure, are given by way of illustration and explanation only, not limitation.

In the present disclosure, unless otherwise stated, the use of directional terms such as "upper, lower and horizontal" is defined according to the normal use direction of the suspension structure, and specifically, the directions "inner" and "outer" are referred to the self-outline of the corresponding component parts with reference to the drawing of fig. 2. The terms "first," "second," and the like, as used herein, are used interchangeably to distinguish one element from another, and are not intended to be sequential or significant. Further, in the following description, when referring to the figures, the same reference numbers in different figures denote the same or similar elements.

Referring to fig. 1 and 2, the embodiment of the present disclosure provides a suspension structure, which includes a base 100 and a suspension body 200 suspended above the base 100, wherein the base 100 can be used as a base to be mounted on a product in which the suspension structure is practically used, such as a suspended globe, a suspended sound box, a suspended exhibition stand, and the like, and the suspension body 200 can be used to set a corresponding suspended product, such as a speaker capable of setting the suspended sound box. The suspension 200 can be suspended above the base 100 in various ways, such as by using the principle that like poles of two permanent magnets repel each other, or by using the principle that like poles of permanent magnets repel each other when the coil is energized, or by using other suspension techniques, such as optical suspension, acoustic suspension, air flow suspension, electric suspension, particle beam suspension, etc., besides the magnetic suspension, which will not be described in detail herein.

Wherein, one of the base 100 and the levitation body 200 may be provided with a plurality of first coils 310, and the other may be provided with at least one first magnet 320 corresponding to the first coils 310, so that after the first coils 310 are energized, a driving force for horizontally moving the levitation body 200 with respect to the base 100 is generated by the action of the first coils 310 and the first magnets 320, and the first magnets 320 may be permanent magnets, electromagnets, or the like. For example, when there are two first coils 310, the directions of the driving forces generated by at least two of the plurality of first coils 310 are different, and when there are three first coils 310, the driving directions of all the three coils may be different, or the driving directions of two of the coils may be the same, and the driving direction of the other coil is different from the driving directions of the two coils. The difference in driving directions here means that extensions of two driving directions intersect, for example, in the drawing of fig. 3, the left-right direction of fig. 3 is one driving direction, and the up-down direction of fig. 3 is the other driving direction. It should be noted that the number of the first magnets 320 may be one, that is, one first magnet 320 is disposed at a position corresponding to all the first coils 310, or the number of the first magnets 320 may also be multiple, for example, one first magnet 320 may correspond to two first coils 310, or one first magnet 320 may correspond to one first coil 310, that is, the number of the first magnets 320 is the same as the number of the first coils 310.

Through the above technical solution, after the first coil 310 is powered on, an ampere force can be applied to the magnetic field of the first magnet 320, and the applied ampere force can drive the suspension 200 to generate a horizontal motion. The suspension body 200 can be moved to any position in the horizontal direction by providing the plurality of first coils 310 to enable the suspension body 200 to move horizontally in at least two directions. When the suspension 200 is subjected to external forces such as vibration, wind, and collision, and is shifted in the horizontal direction relative to the base 100, the first coil 310 and the first magnet 320 act to correct the suspension 200 to the steady position against the external forces. The suspension body 200 can also generate any motion track under the action of the first coil 310 and the first magnet 320, such as a rotating or 8-shaped motion track, so as to improve the visual effect of the suspension structure.

According to an embodiment of the present disclosure, referring to fig. 2, a first coil 310 may be disposed on the suspension 200 and a first magnet 320 may be disposed on the base 100. Because the coil has a lighter weight than the magnet, the overall weight of the levitation body 200 can be smaller by adopting the arrangement mode, and the levitation control and the horizontal movement control of the levitation body 200 are more facilitated.

With continued reference to fig. 2, a wireless rechargeable battery 400 may also be provided on the suspension body 200 for powering the first coil 310, so that the battery can be recharged without disassembling the battery. When the first coil 310 is mounted on the suspension 200, the wireless charging battery can be used to solve the problem because it is inconvenient to draw a wire from the suspension 200 to power the coil or charge the battery. When the first coil 310 is mounted on the base 100 and the first magnet 320 is mounted on the suspension 200, a power line may be provided in the base 100 to supply power to the first coil 310 by an external power source, or a battery may be provided to supply power, which is not limited herein.

In the embodiment of the present disclosure, referring to fig. 3 to 5, structures such as the base 100 and the suspension body 200 are omitted for easy understanding, in this embodiment, the number of the first coils 310 may be plural, a plurality of the first coils 310 may be disposed at equal intervals in the circumferential direction of the suspension body 200 or the base 100, for example, the number of the first coils 310 may be four. The arrangement mode can make the center of gravity of the suspension body 200 in the middle, and avoid the deflection caused by uneven weight distribution, and five or six suspension bodies can be arranged in other embodiments, which is not limited herein. It should be noted that the first coil 310 shown in fig. 2 is placed in an inclined manner, which is mainly based on the structure of the suspension 200, and when the structure of the suspension 200 is a horizontal structure, the first coil 310 may also be placed horizontally.

Referring to fig. 5, the first magnet 320 may be configured as a bipolar magnet having poles distributed up and down, and the first coil 310 may be configured as a track-type coil. In an embodiment, for convenience of control, referring to fig. 3 to 5, one side of the runway-type coil may be coated with a shielding element 311, specifically, in the embodiment of the present disclosure, the runway-type coil may include a first arc side, a first straight side, a second arc side, and a second straight side that are connected end to end, preferably, the first straight side and the second straight side are in plane symmetry, the first arc side and the second arc side are also in plane symmetry, the first straight side or the second straight side may be coated with the shielding element 311, ampere forces applied to the first arc side and the second arc side may cancel each other, in other embodiments, the shielding element 311 may also be coated on the first arc side or the second arc side, and ampere forces applied to the first straight side and the second straight side may cancel each other. The shield 311 is provided to prevent the edge from generating an ampere force that counteracts its opposing edge, thereby controlling the movement of the levitation body 200 by controlling one edge of the racetrack coil. The shielding part 311 may be a metal part, the shielding part 311 may be adhered to the coil by a heat dissipation adhesive, and the side of the coil is heat dissipated by the heat dissipation adhesive and the high thermal conductivity of the shielding part 311. When there are four track-type coils, the shield 311 may be disposed on the outermost side of the coils as in fig. 3, and when the first magnet 320 is a ring-shaped magnet as described below, the density of magnetic induction lines near the inner side is denser, so that a greater driving force may be generated. In another embodiment, the track-type coil may be disposed to be slightly offset from the position of the first magnet 320 in a direction perpendicular to the magnetic poles, that is, the center of the track-type coil is not aligned with the center of the first magnet 320 in the distribution direction of the magnetic poles, so that the forces applied to the opposite sides of the track-type coil do not cancel each other, and thus the moving direction of the levitating body 200 may be controlled according to the direction or magnitude of the current for controlling the track-type coil.

Referring to fig. 1 and 5, when the plurality of first coils 310 share one first magnet 320, the first magnet 320 may be configured as a ring-shaped magnet, and the plurality of first coils 310 are uniformly distributed in the circumferential direction of the ring-shaped magnet, so that uniform stress at each position may be ensured. When the first magnet 320 is provided to the levitation body 200, a plurality of individual first magnets 320 may be provided, so that only the magnets are provided at positions corresponding to the first coils 310 to reduce the weight of the levitation body 200 as much as possible.

According to an embodiment, referring to fig. 1 and 2, the levitation structure may further include a second magnet 720 and a second coil 710 that levitate the levitation body 200 above the base 100, one of the second magnet 720 and the second coil 710 may be disposed inside the first magnet 320, and the other may be disposed inside an annular space surrounded by the plurality of first coils 310. Referring to fig. 2, in the embodiment of the present disclosure, in order to avoid interference between the coils and the magnets for horizontal driving and levitation driving, the second coil 710 may be disposed inside the first magnet 320, and the second magnet 720 may be disposed inside an annular space surrounded by the first coil 310. In other embodiments, the first coil 310 and the second coil 710 may be shared, or the first magnet 320 and the second magnet 720 may be shared, which is not limited herein. The second magnet 720 may be a permanent magnet, an electromagnet, or the like, and the second magnet 720 may be a ring magnet, which may be smaller than the first magnet 320, so as to reduce the weight of the suspension 200.

Referring to fig. 2 to 5, the suspension structure may further include a circuit board 500 for electrically connecting the plurality of first coils 310 and a TMR sensor 600 for sensing a magnetic field variation of each first coil 310, the circuit board being configured to control an energization direction and a current magnitude of the corresponding first coil 310 according to feedback information of the TMR (Tunnel magnetic-Resistive Tunnel magnetic resistance) sensor 600. Here, the arrangement of the first coil 310 and the shield 311 as in fig. 3, and the arrangement of the first magnet 320 with the N-pole facing out of the paper will be described as an example. The dotted line in fig. 4 shows that the magnetic field intensity of the circles of the first magnet 320 with any diameter around the center thereof is the same, and the magnetic field intensity at the position with the larger radius is smaller, the magnetic force line distribution diagram of the first magnet 320 is as shown in fig. 5, and the currents with the same magnitude are all applied to the plurality of first coils 310 clockwise or counterclockwise in the initial state, and the current direction may be as shown by the arrow in fig. 3, so that, according to the left-hand rule, in the direction of the drawing plane in fig. 3, the first coil 310 on the left side is forced rightward, the first coil 310 on the right side is forced leftward, so that the force of the levitation body 200 is balanced in the left-right direction, the first coil 310 on the upper side is forced downward, and the first coil 310 on the lower side is forced upward, so that the force of the levitation body 200 is balanced in the up-down direction; when the suspension 200 is at the position shifted to the left in fig. 4, the TMR sensor 600 at the left side senses a decrease in magnetic field, the TMR sensor 600 at the right side senses an increase in magnetic field, the circuit board 500 determines that the suspension 200 is shifted due to an external force applied to the left side after receiving the magnetic field change signal, the circuit board 500 increases the current of the first coil 310 at the left side to increase the driving force to the right side in order to balance the external force, and also decreases the current of the first coil 310 at the right side to decrease the driving force to the left side, or directly changes the current direction of the first coil 310 at the right side to generate the driving force to the right side, so that the suspension 200 generates an ampere force to the right side to counteract the external force, and when the TMR sensor 600 detects that the suspension 200 is at the center, the current is readjusted, the suspension 200 is maintained in a central steady-state position.

According to the way that the circuit board 500 controls the current magnitude or direction of each first coil 310, the suspension 200 can also realize the motion tracks of various effects, for example, a control program can be input in advance, the suspension 200 can be controlled to different position points, and the position points can form the motion tracks of various effects, for example, the suspension can rotate around a certain point, or the suspension can be in an 8-shaped track, so as to meet various requirements. Moreover, the suspension structure can be suitable for various placing platforms, for example, when the suspension structure is placed on a non-flat surface with a certain inclination angle, the inclination can be resisted through the control mode, so that the range of the using scene of the suspension structure is expanded.

According to the second aspect of the present disclosure, there is also provided a speaker device, which includes the suspension structure described above, and a speaker may be disposed in the suspension body 200. The loudspeaker device has all the advantages of the suspension structure, and the details are not repeated.

According to a third aspect of the present disclosure, there is also provided a projection apparatus having the above speaker device, the audio output apparatus having all the advantageous effects of the above speaker device. The projection device provided by the present disclosure may be any device having a speaker function, and may be a projector, for example. Further, the number of the loudspeakers can be multiple, so that the uniformity and the strength of a sound field are further improved, and the auditory experience and the viewing experience of a user are improved.

The preferred embodiments of the present disclosure are described in detail with reference to the accompanying drawings, however, the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solution of the present disclosure within the technical idea of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.

It should be noted that, in the foregoing embodiments, various features described in the above embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, various combinations that are possible in the present disclosure are not described again.

In addition, any combination of various embodiments of the present disclosure may be made, and the same should be considered as the disclosure of the present disclosure, as long as it does not depart from the spirit of the present disclosure.

Claims (10)

1. A suspension structure comprising a base (100) and a suspension body (200) suspended above the base (100), characterized in that one of the base (100) and the suspension body (200) is provided with a plurality of first coils (310), and the other is provided with at least one first magnet (320) corresponding to the first coils (310), the first coils (310) being used for being electrified to generate a driving force for horizontally moving the suspension body (200) relative to the base (100), wherein the directions of the driving forces generated by at least two of the plurality of first coils (310) are different.

2. Suspension structure according to claim 1, characterized in that the first magnet (320) is configured as a bipolar magnet with poles distributed up and down, and the first coil (310) is configured as a racetrack coil, one side of which is coated with a shield (311).

3. The suspension structure according to claim 2, wherein the first magnet (320) is configured as a ring magnet, and a plurality of the first coils (310) are uniformly distributed in a circumferential direction of the ring magnet.

4. The levitation structure as recited in claim 3, further comprising a second magnet (720) and a second coil (710) for levitating the levitation body (200) above the base (100), wherein one of the second magnet (720) and the second coil (710) is disposed inside the first magnet (320), and the other is disposed inside an annular space surrounded by the plurality of first coils (310).

5. The suspension structure according to claim 1, wherein a plurality of the first coils (310) are arranged at equal intervals in a circumferential direction of the suspension body (200) or the base (100).

6. The suspension structure according to claim 1, further comprising a circuit board (500) for electrically connecting with a plurality of the first coils (310) and a TMR sensor (600) for sensing a magnetic field variation of each of the first coils (310), the circuit board being configured to control an energization direction and a current magnitude of the corresponding first coil (310) according to feedback information of the TMR sensor (600).

7. The suspension structure according to any of claims 1-6, wherein the first coil (310) is arranged on the suspension body (200) and the first magnet (320) is arranged on the base (100).

8. The suspension structure according to claim 7, characterized in that a wireless rechargeable battery (400) for powering the first coil (310) is also arranged on the suspension body (200).

9. An acoustic speaker arrangement, characterized in that it comprises a suspension structure according to any of claims 1-8, in which suspension body (200) a speaker is arranged.

10. A projection apparatus characterized by comprising the speaker device according to claim 9.

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