Height adjustment device, loudspeaker assembly, and vehicle

Abstract

A height adjustment device, comprising: a housing (1), a height adjustment support (2), and a driving assembly (3). The height adjustment support (2) is mounted on the housing (1) in a height-adjustable manner; the driving assembly (3) is mounted on the housing (1); the driving assembly (3) comprises a driving part (31), a first transmission part (32), and a second transmission part (33); by means of the first transmission part (32), the driving part (31) drives the second transmission part (33) to move, so that the second transmission part (33) drives the height adjustment support (2) to move up / down relative to the housing (1); when the load of the second transmission part (33) is less than or equal to a preset threshold, the second transmission part (33) moves synchronously with the first transmission part (32); and when the load of the second transmission part (33) is greater than the preset threshold, the second transmission part (33) and the first transmission part (32) can slide relatively. The height adjustment device has an overload protection function to prevent the height adjustment device from being damaged. Also provided are a loudspeaker assembly comprising the height adjustment device, and a vehicle comprising the loudspeaker assembly.

Description

Lifting device, speaker assembly and vehicle

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This disclosure claims priority to Chinese patent application number 202410139793.9, filed on January 31, 2024, entitled “Lifting device, speaker assembly and vehicle,” the entire contents of which are incorporated by reference into this disclosure. Technical Field

[0003] The present disclosure relates to the technical field of vehicles, and in particular to a lifting device, a speaker assembly, and a vehicle. Background Art

[0004] In related technologies, the speakers of some vehicles can be raised and lowered by a lifting device. During or after the raising process, the speakers may be subjected to external force by objects or people, causing the speakers and the lifting device to drop under the action of external force. The lifting mechanism is easily damaged in this process, and the reliability of the lifting device is poor. Summary of the Invention

[0005] The present disclosure aims to solve at least one of the above-mentioned technical problems in the prior art to a certain extent. To this end, the present disclosure provides a lifting device, wherein the driving assembly has an overload protection function to prevent the lifting device from being damaged.

[0006] The present disclosure also provides a speaker assembly having the above-mentioned lifting device.

[0007] The present disclosure also provides a vehicle having the above-mentioned speaker assembly.

[0008] According to an embodiment of the present disclosure, the lifting device includes: a shell; a lifting bracket, which can be lifted and installed on the shell, and the lifting bracket has an installation position for installing a speaker; a driving component, which is installed on the shell, and the driving component includes a driving part, a first transmission part and a second transmission part, the driving part drives the second transmission part to move through the first transmission part, so that the second transmission part drives the lifting bracket to move relative to the shell; the second transmission part has a transmission state and a protection state, when the load of the second transmission part is less than or equal to a preset threshold, the second transmission part is in the transmission state, and the second transmission part moves synchronously with the first transmission part; when the load of the second transmission part is greater than the preset threshold, the second transmission part is in the protection state, and the second transmission part and the first transmission part can slide relative to each other.

[0009] According to the lifting device of the embodiment of the present disclosure, the driving part can drive the second transmission part to move through the first transmission part, so that the second transmission part drives the lifting bracket to rise and fall relative to the shell, thereby realizing the lifting function of the speaker. At the same time, when the load of the second transmission part is greater than a preset threshold, the second transmission part is in a protection state, and the second transmission part and the first transmission part can slide relative to each other to realize the overload protection function of the driving component, avoid damage to the lifting device, and thus help to improve the reliability and service life of the lifting device.

[0010] According to another embodiment of the present disclosure, a speaker assembly includes a speaker and the above-mentioned lifting device, and the speaker is installed at the installation position.

[0011] According to the speaker assembly of the embodiment of the present disclosure, the driving part of the lifting device can drive the second transmission part to move through the first transmission part, so that the second transmission part drives the lifting bracket to rise and fall relative to the shell, thereby realizing the lifting function of the speaker. At the same time, when the load of the second transmission part is greater than a preset threshold, the second transmission part is in a protection state, and the second transmission part and the first transmission part can slide relative to each other to realize the overload protection function of the driving component, avoid damage to the lifting device, and thus help to improve the reliability and service life of the lifting device.

[0012] A vehicle according to yet another embodiment of the present disclosure includes the above-mentioned speaker assembly.

[0013] According to the vehicle of the embodiment of the present disclosure, the driving part of the lifting device can drive the second transmission part to move through the first transmission part, so that the second transmission part drives the lifting bracket to rise and fall relative to the shell, thereby realizing the lifting function of the speaker. At the same time, when the load of the second transmission part is greater than a preset threshold, the second transmission part is in a protection state, and the second transmission part and the first transmission part can slide relative to each other to realize the overload protection function of the drive component, avoid damage to the lifting device, and thus help improve the reliability and service life of the lifting device.

[0014] Additional aspects and advantages of the present disclosure will be given in part in the description that follows and, in part, will be obvious from the description that follows, or will be learned through practice of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] FIG1 is an exploded view of a lifting device and a speaker according to an embodiment of the present disclosure;

[0016] FIG2 is a schematic structural diagram of a lifting device and a speaker according to an embodiment of the present disclosure;

[0017] FIG3 is a schematic diagram of a drive assembly according to an embodiment of the present disclosure;

[0018] FIG4 is an enlarged view of FIG3 at the first transmission portion;

[0019] FIG5 is a schematic diagram of a driving unit according to an embodiment of the present disclosure;

[0020] FIG6 is a schematic diagram of a first transmission part according to an embodiment of the present disclosure;

[0021] FIG7 is a schematic diagram of a second transmission part according to an embodiment of the present disclosure;

[0022] FIG8 is a schematic diagram of a support shaft according to an embodiment of the present disclosure;

[0023] FIG9 is a schematic diagram of a lifting bracket according to an embodiment of the present disclosure;

[0024] FIG10 is a schematic diagram of a front housing according to an embodiment of the present disclosure;

[0025] FIG11 is a schematic diagram of a rear housing according to an embodiment of the present disclosure;

[0026] FIG12 is a schematic structural diagram of a mask according to an embodiment of the present disclosure.

[0027] Figure markings: Shell 1; Front shell 11; Rear shell 12; First mounting hole 131; Third mounting hole 132; Guide hole 133; Lifting bracket 2; Bracket body 21; Mounting position 221; Lifting rack 22; Guide column 23; Driving assembly 3; Driving part 31; Motor 311; Reduction gear set 312; First transmission part 32; First transmission shaft 321; First bevel gear 3211; External spline 3212; Second transmission part 33; Second transmission shaft 331; Second bevel gear 3311; Fourth bevel gear 3312; Second positioning pin 332; Fourth positioning pin 333; Transmission gear 334; Support shaft 34; Third bevel gear 341; Fourth positioning hole 342; Lifting device 10; Speaker 20; Mask 201; Top protective net 2011; Side protective net 2022; Speaker assembly 100. DETAILED DESCRIPTION

[0028] The following describes in detail embodiments of the present disclosure, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present disclosure, and should not be construed as limiting the present disclosure.

[0029] In the description of the present disclosure, it should be understood that the terms "upper", "lower", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present disclosure and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present disclosure.

[0030] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. Throughout the present disclosure, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0031] In this disclosure, unless otherwise expressly specified or limited, terms such as "mounted," "connected," "connect," and "fixed" should be understood broadly. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections, electrical connections, or communication; direct connections or indirect connections through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of these terms in this disclosure based on specific circumstances.

[0032] The lifting device 10 , the speaker assembly 100 and the vehicle according to the embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings.

[0033] 1 and 2 , the lifting device 10 according to an embodiment of the present disclosure includes: a shell 1, a lifting bracket 2 and a drive assembly 3. The lifting bracket 2 can be installed on the shell 1 in a liftable manner. The lifting bracket 2 has a mounting position 221 for installing a speaker 20. That is, the mounting position 221 can be used to install the speaker 20. By controlling the lifting and lowering of the lifting bracket 2, the lifting and lowering of the speaker 20 can be achieved, thereby changing the playback effect of the speaker 20.

[0034] The drive assembly 3 is installed on the shell 1. The drive assembly 3 includes a drive part 31, a first transmission part 32 and a second transmission part 33. The drive part 31, the first transmission part 32, the second transmission part 33 and the lifting bracket 2 are connected in sequence. The drive part 31 drives the second transmission part 33 to move through the first transmission part 32, so that the second transmission part 33 drives the lifting bracket 2 to rise and fall relative to the shell 1.

[0035] The second transmission part 33 has a transmission state and a protection state. When the load on the second transmission part 33 is less than or equal to a preset threshold, the second transmission part 33 is in the transmission state, and the second transmission part 33 moves synchronously with the first transmission part 32 to achieve the lifting function of the lifting bracket 2. When the load on the second transmission part 33 is greater than the preset threshold, the second transmission part 33 is in the protection state, and the second transmission part 33 and the first transmission part 32 can slide relative to each other to achieve the overload protection function of the drive assembly 3.

[0036] Specifically, referring to Figures 1 and 2, when the lifting device 10 is in normal use, the load on the second transmission part 33 is less than or equal to a preset threshold, and the second transmission part 33 is in a transmission state. At this time, the driving part 31 drives the second transmission part 33 to move synchronously through the first transmission part 32, and the second transmission part 33 drives the lifting bracket 2 to rise and fall relative to the shell 1 to realize the lifting function of the lifting bracket 2.

[0037] After the lifting bracket 2 is raised or during the lifting process, if the lifting bracket 2 is subjected to a downward external force (for example, the lifting bracket 2 is pressed by an object or pressed by a person, etc.), causing the load transmitted to the second transmission part 33 by the lifting bracket 2 to be greater than a preset threshold, the second transmission part 33 is in a protection state. At this time, the second transmission part 33 and the first transmission part 32 can slide relative to each other, that is, the movement of the second transmission part 33 and the first transmission part 32 are not synchronized, and the second transmission part 33 and the first transmission part 32 can move relatively independently. The transmission between the second transmission part 33 and the first transmission part 32 slips, so that the lifting bracket 2 can be lowered by the external force, and the slip between the second transmission part 33 and the first transmission part 32 can avoid damage to the drive assembly 3 and the lifting bracket 2, thereby realizing the overload protection function of the drive assembly 3.

[0038] According to the lifting device 10 of the embodiment of the present disclosure, the driving part 31 can drive the second transmission part 33 to move through the first transmission part 32, so that the second transmission part 33 drives the lifting bracket 2 to rise and fall relative to the shell 1, thereby realizing the lifting function of the speaker 20. At the same time, when the load of the second transmission part 33 is greater than a preset threshold, the second transmission part 33 is in a protection state, and the second transmission part 33 and the first transmission part 32 can slide relative to each other to realize the overload protection function of the driving component 3, thereby avoiding damage to the lifting device 10, and thus helping to improve the reliability and service life of the lifting device 10.

[0039] In some embodiments of the present disclosure, referring to Figures 1 to 7, the first transmission portion 32 includes a first transmission shaft 321, and the second transmission portion 33 includes a second transmission shaft 331. The first transmission shaft 321 and the second transmission shaft 331 are both rotatably mounted on the housing 1. The housing 1 can support the first transmission shaft 321 and the second transmission shaft 331 in the axial and radial directions. The first transmission shaft 321 and the second transmission shaft 331 are coaxially arranged. In the axial direction of the second transmission shaft 331, the first transmission shaft 321 is away from the second transmission shaft 331. One end is connected to the driving part 31 for transmission. The end surface of the first transmission shaft 321 close to the second transmission shaft 331 is provided with a first bevel tooth 3211, and the end surface of the second transmission shaft 331 close to the first transmission shaft 321 is provided with a second bevel tooth 3311. In the transmission state, the first bevel tooth 3211 is engaged with the second bevel tooth 3311 to realize the synchronous rotation of the first transmission shaft 321 and the second transmission shaft 331. In the protection state, the first bevel tooth 3211 and the second bevel tooth 3311 can slide relative to each other to realize the overload protection function of the driving component 3.

[0040] Specifically, referring to Figures 1, 6, 7 and 10, a first mounting hole 131 and a second mounting hole that are connected can be opened in the shell 1, the first transmission shaft 321 can be rotatably passed through the first mounting hole 131, and the second transmission shaft 331 can be rotatably passed through the second mounting hole. The first mounting hole 131 and the second mounting hole can be coated with grease to reduce the friction resistance of the first transmission shaft 321 and the second transmission shaft 331 during rotation.

[0041] 5 and 6 , the driving unit 31 includes a motor 311 and a reduction gear set 312 that are transmission-connected. The input gear of the reduction gear set 312 is transmission-connected to the output shaft of the motor 311. The output gear of the reduction gear set 312 has an internal spline. The end of the first transmission shaft 321 away from the second transmission shaft 331 has an external spline 3212. The external spline 3212 is meshed with the internal spline for transmission. The reduction gear set 312 can decelerate and torque the power output by the motor 311 and then transmit it to the first transmission shaft 321.

[0042] 1 to 4, 6 and 7, the first transmission shaft 321 and the second transmission shaft 331 are coaxially arranged to reduce the size of the drive assembly 3 in the radial direction of the second transmission shaft 331 and improve the space utilization of the drive assembly 3. The end surfaces opposite to each other of the first transmission shaft 321 and the second transmission shaft 331 are respectively provided with a first helical tooth 3211 and a second helical tooth 3311, and it is convenient to realize the synchronous transmission and overload protection of the first transmission shaft 321 and the second transmission shaft 331. At the same time, the first helical tooth 3211 is provided with a first helical tooth 3211 and a second helical tooth 3311. When the first and second bevel teeth 3311 slip, the first and second bevel teeth 3211, 3311 are less likely to break or be damaged. In the transmission state, the first bevel teeth 3211 mesh with the second bevel teeth 3311 to achieve synchronous rotation of the first transmission shaft 321 and the second transmission shaft 331. In the protection state, the torque transmitted between the first and second bevel teeth 3211 exceeds the design upper limit, and the first and second bevel teeth 3211, 3311 can slide relative to each other to achieve the overload protection function of the drive assembly 3. Specifically, the opposing end surfaces of the first transmission shaft 321 and the second transmission shaft 331 can be respectively provided with a plurality of first bevel teeth 3211 and a plurality of second bevel teeth 3311 to enhance the stability and reliability of the transmission between the first and second transmission shafts 321, 331.

[0043] In other embodiments of the present disclosure (not shown in the figures), the driving portion 31 has a driving wheel, the second transmission portion 33 includes a driven wheel and a second transmission shaft 331 fixedly connected thereto, the first transmission portion 32 is constructed as a transmission belt, and the transmission belt is connected between the driving wheel and the driven wheel. When the load of the second transmission portion 33 is less than or equal to a preset threshold value, the second transmission portion 33 is in a transmission state, the driving wheel drives the driven wheel and the second transmission shaft 331 to rotate via the transmission belt, and the driven wheel and the second transmission shaft 331 both move synchronously with the transmission belt. When the load of the second transmission portion 33 is greater than a preset threshold value, the second transmission portion 33 is in a protection state, and the driven wheel and the transmission belt can slide relative to each other, so as to realize the overload protection function of the drive assembly 3 by the driven wheel slipping relative to the transmission belt.

[0044] In some embodiments of the present disclosure (not shown in the figures), the first transmission part 32 also includes a first positioning pin, which is coaxially arranged with the first transmission shaft 321. The first positioning pin is connected to the end face of the first transmission shaft 321 close to the second transmission shaft 331. The second transmission shaft 331 has a first positioning hole at one end close to the first transmission shaft 321. The first positioning pin is passed through the first positioning hole. The first positioning pin and the first positioning hole can be positioned and matched to ensure the coaxiality of the first transmission shaft 321 and the second transmission shaft 331, and facilitate the assembly of the first transmission shaft 321 and the second transmission shaft 331.

[0045] In other embodiments of the present disclosure, as shown in Figures 6 and 7, the second transmission part 33 also includes a second positioning pin 332, which is coaxially arranged with the second transmission shaft 331. The second positioning pin 332 is connected to the end face of the second transmission shaft 331 close to the first transmission shaft 321. The first transmission shaft 321 has a second positioning hole at one end close to the second transmission shaft 331. The second positioning pin 332 is passed through the second positioning hole. The second positioning pin 332 and the second positioning hole can be positioned and matched to ensure the coaxiality of the first transmission shaft 321 and the second transmission shaft 331, and facilitate the assembly of the first transmission shaft 321 and the second transmission shaft 331.

[0046] In some embodiments of the present disclosure, as shown in Figures 1 to 3, 7 and 8, the drive assembly 3 also includes a support shaft 34, which is rotatably mounted on the housing 1. The housing 1 can support the support shaft 34 in the axial and radial directions. The support shaft 34 is coaxially arranged with the second transmission shaft 331. In the axial direction of the second transmission shaft 331, the support shaft 34 is arranged on the side of the second transmission shaft 331 away from the first transmission shaft 321. The end surface of the support shaft 34 close to the second transmission shaft 331 is provided with a third bevel tooth 341, and the end surface of the second transmission shaft 331 close to the support shaft 34 is provided with a fourth bevel tooth 3312. In the transmission state, the third bevel tooth 341 is meshed with the fourth bevel tooth 3312, and the support shaft 34 can rotate synchronously with the second transmission shaft 331. In the protection state, the third bevel tooth 341 and the fourth bevel tooth 3312 can slide relative to each other to reduce the instantaneous load of the second transmission shaft 331 and improve the service life of the second transmission shaft 331.

[0047] Specifically, as shown in Figures 1-3, 7, 8, and 10, a third mounting hole 132 communicating with the second mounting hole may be defined within the housing 1. The support shaft 34 may be rotatably disposed within the third mounting hole 132. Grease may be applied to the third mounting hole 132 to reduce frictional resistance during rotation of the support shaft 34. The support shaft 34 and the first transmission shaft 321 may support the second transmission shaft 331 on both axial sides thereof to enhance the stability of the movement of the second transmission shaft 331. In the protected state, when external force is transmitted to the second transmission shaft 331 via the lifting bracket 2, both ends of the second transmission shaft 331 may rotate relative to the support shaft 34 and the first transmission shaft 321, thereby reducing the effect of the frictional resistance of the housing 1 on the support shaft 34 on the rotation of the second transmission shaft 331 and thereby reducing the instantaneous load on the second transmission shaft 331.

[0048] It should be noted that, in the protection state, when the second transmission shaft 331 slides relative to the first transmission shaft 321 and the support shaft 34, the friction between the first bevel teeth 3211 and the second bevel teeth 3311, and the friction between the third bevel teeth 341 and the fourth bevel teeth 3312 can form a damping effect on the second transmission shaft 331, so as to reduce the descending speed of the lifting bracket 2 under the action of external force through the second transmission shaft 331, thereby preventing the lifting bracket 2 from descending rapidly and causing damage to the lifting device 10.

[0049] In some embodiments of the present disclosure (not shown in the figures), the drive assembly 3 also includes a third positioning pin, which is coaxially arranged with the support shaft 34. The third positioning pin is connected to the end face of the support shaft 34 close to the second transmission shaft 331. The second transmission shaft 331 has a third positioning hole at one end close to the support shaft 34. The third positioning pin is passed through the third positioning hole. The third positioning pin and the third positioning hole can be positioned and matched to ensure the coaxiality of the second transmission shaft 331 and the support shaft 34, and facilitate the assembly of the second transmission shaft 331 and the support shaft 34.

[0050] In other embodiments of the present disclosure, as shown in Figures 7 and 8, the second transmission part 33 also includes a fourth positioning pin 333, which is coaxially arranged with the second transmission shaft 331. The fourth positioning pin 333 is connected to the end face of the second transmission shaft 331 close to the support shaft 34. The support shaft 34 has a fourth positioning hole 342 at one end close to the second transmission shaft 331. The fourth positioning pin 333 is passed through the fourth positioning hole 342. The fourth positioning pin 333 and the fourth positioning hole 342 can be positioned and matched to ensure the coaxiality of the second transmission shaft 331 and the support shaft 34, and facilitate the assembly of the second transmission shaft 331 and the support shaft 34.

[0051] In some embodiments of the present disclosure, referring to Figures 2, 7 and 9, the second transmission part 33 also includes a transmission gear 334, which is fixed to the second transmission shaft 331. The lifting bracket 2 includes a bracket body 21 and a lifting rack 22 that are fixedly connected. The bracket body 21 has a mounting position 221. The lifting rack 22 extends along the lifting direction of the lifting bracket 2. The lifting rack 22 is engaged with the transmission gear 334. The second transmission shaft 331 can drive the lifting rack 22 to rise and fall relative to the shell 1 through the transmission gear 334. The transmission structure of the transmission gear 334 and the lifting rack 22 is simple and reliable, and is easy to manufacture and assemble.

[0052] In some embodiments of the present disclosure, as shown in Figures 2, 7 and 9, there are multiple transmission gears 334, and the multiple transmission gears 334 are arranged at intervals along the axial direction of the second transmission shaft 331. There are multiple lifting racks 22, and the multiple lifting racks 22 are meshed with the multiple transmission gears 334 in a one-to-one correspondence to improve the reliability of the transmission between the second transmission part 33 and the lifting bracket 2.

[0053] In other embodiments of the present disclosure (not shown in the figures), the second rotating shaft can be a crankshaft, and the second transmission part 33 also includes a connecting rod, which is connected between the crankshaft and the lifting device 10. When the crankshaft rotates, the connecting rod can drive the lifting bracket 2 to rise and fall.

[0054] In some embodiments of the present disclosure, referring to Figures 1 and 9-11, the lifting bracket 2 further includes a guide column 23, which is fixedly connected to the bracket body 21. The shell 1 is provided with a guide hole 133. Along the lifting direction of the lifting bracket 2, the guide column 23 and the guide hole 133 are guided and cooperated to improve the stability of the lifting bracket 2 during lifting and preventing the lifting bracket 2 from deflecting relative to the shell 1.

[0055] In some embodiments of the present disclosure, as shown in Figures 1 and 9-11, there are multiple guide pillars 23, and the multiple guide pillars 23 are symmetrically arranged on the bracket body 21. The guide pillars 23 can also be connected to the bottom of the lifting rack 22. There are multiple guide holes 133, and the multiple guide holes 133 correspond to the multiple guide pillars 23 in a one-to-one guiding manner to further improve the stability of the lifting bracket 2 during lifting.

[0056] In some embodiments of the present disclosure, as shown in Figures 1, 10, and 11, the housing 1 includes a front housing 11 and a rear housing 12. The front housing 11 and the rear housing 12 together define an installation space, and at least a portion of the drive assembly 3 is disposed within the installation space to facilitate assembly of the drive assembly 3. Specifically, when assembling the lifting device 10, the drive assembly 3 can be first installed on the front housing 11 or the rear housing 12, and then the front housing 11 and the rear housing 12 can be assembled together using fasteners, thereby facilitating assembly and maintenance of the lifting device 10.

[0057] 1-11 , a speaker assembly 100 according to another embodiment of the present disclosure includes a lifting device 10 and a speaker 20 . The lifting device 10 is the lifting device 10 of the above embodiment, and the speaker 20 is installed at the installation position 221 .

[0058] According to the speaker assembly 100 of the embodiment of the present disclosure, the driving part 31 of the lifting device 10 can drive the second transmission part 33 to move through the first transmission part 32, so that the second transmission part 33 drives the lifting bracket 2 to rise and fall relative to the shell 1, thereby realizing the lifting function of the speaker 20. At the same time, when the load of the second transmission part 33 is greater than the preset threshold, the second transmission part 33 is in a protection state, and the second transmission part 33 and the first transmission part 32 can slide relative to each other to realize the overload protection function of the driving component 3, thereby avoiding damage to the lifting device 10, and thus helping to improve the reliability and service life of the lifting device 10.

[0059] In some embodiments of the present disclosure, as shown in Figures 1 and 12, the speaker 20 includes a speaker body and a mask 201. The mask 201 is installed at the installation position 221. A mounting cavity is provided in the mask 201. The speaker body is provided in the mounting cavity. The sound emitted by the speaker body can be transmitted to the outside through the mask 201. The mask 201 can be used to protect the speaker body. The mask 201 is an appearance part visible to the user, and the style of the mask 201 can be adjusted according to user needs.

[0060] A vehicle according to yet another embodiment of the present disclosure includes the speaker assembly 100 of the above embodiment.

[0061] According to the vehicle of the embodiment of the present disclosure, the driving part 31 of the lifting device 10 can drive the second transmission part 33 to move through the first transmission part 32, so that the second transmission part 33 drives the lifting bracket 2 to rise and fall relative to the shell 1, thereby realizing the lifting function of the speaker 20. At the same time, when the load of the second transmission part 33 is greater than a preset threshold, the second transmission part 33 is in a protection state, and the second transmission part 33 and the first transmission part 32 can slide relative to each other to realize the overload protection function of the driving component 3, thereby avoiding damage to the lifting device 10, and thus helping to improve the reliability and service life of the lifting device 10.

[0062] In some embodiments of the present disclosure, a speaker assembly 100 can be mounted on a vehicle's dashboard. The speaker assembly 100 has a stowed state and an in-use state. In the stowed state, the upper surface of the speaker 20 is flush with the dashboard. When the vehicle is locked, the vehicle's controller controls the driver 31 to activate the speaker assembly 100 in the stowed state. When the vehicle is playing music, the vehicle's controller controls the driver 31 to activate the speaker assembly 100 from the stowed state to the in-use state. In this state, the driver assembly 3 drives the speaker 20 upward relative to the dashboard via the lift bracket 2, causing the speaker 20 to protrude from the dashboard. When a downward external force is applied to the speaker 20 or lift bracket 2, causing the load transmitted to the second transmission portion 33 by the lift bracket 2 to exceed a predetermined threshold, the second transmission portion 33 enters a protective state, and the lift bracket 2 and speaker 20 descend relative to the dashboard to the stowed state, in which the upper surface of the speaker 20 is flush with the dashboard.

[0063] In some embodiments of the present disclosure, referring to Figures 1 and 12, the mounting position 221 is located on the side of the lifting bracket 2 facing away from the shell 1, and the mask 201 has a top protective net 2011 and a side protective net 2022. In the retracted state, the top protective net 2011 is flush with the outer surface of the instrument panel, and the side protective net 2022 is located inside the instrument panel. In the use state, the side protective net 2022 is located outside the instrument panel and faces the occupants in the car. The sound output direction of the speaker body can be toward the side protective net 2022, so that the speaker 20 can improve the sound field in the car when it is raised, thereby enhancing the user's listening experience.

[0064] In the description of this specification, the reference terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present disclosure. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification.

[0065] Although the embodiments of the present disclosure have been shown and described above, it is understood that the above embodiments are illustrative and are not to be construed as limitations on the present disclosure. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present disclosure.

Claims

1. A lifting device, wherein: include: Housing (1); A lifting bracket (2), the lifting bracket (2) being movably mounted on the housing (1), the lifting bracket (2) having a mounting position (221) for mounting a speaker (20); A drive assembly (3), the drive assembly (3) being mounted on the housing (1), the drive assembly (3) comprising a drive portion (31), a first transmission portion (32), and a second transmission portion (33), the drive portion (31) driving the second transmission portion (33) to move via the first transmission portion (32), so that the second transmission portion (33) drives the lifting bracket (2) to move up and down relative to the housing (1); The second transmission part (33) has a transmission state and a protection state. When the load of the second transmission part (33) is less than or equal to a preset threshold, the second transmission part (33) is in the transmission state, and the second transmission part (33) moves synchronously with the first transmission part (32); When the load of the second transmission part (33) is greater than the preset threshold, the second transmission part (33) is in a protection state, and the second transmission part (33) and the first transmission part (32) can slide relative to each other.

2. The lifting device according to claim 1, wherein: The first transmission part (32) includes a first transmission shaft (321), and the second transmission part (33) includes a second transmission shaft (331). The first transmission shaft (321) and the second transmission shaft (331) are both rotatably mounted on the housing (1). The first transmission shaft (321) and the second transmission shaft (331) are coaxially arranged. In the axial direction of the second transmission shaft (331), one end of the first transmission shaft (321) away from the second transmission shaft (331) is transmission-connected to the driving part (31). The end surface of the first transmission shaft (321) close to the second transmission shaft (331) is provided with a first bevel tooth (3211), and the end surface of the second transmission shaft (331) close to the first transmission shaft (321) is provided with a second bevel tooth (3311). In the transmission state, the first bevel tooth (3211) is meshed with the second bevel tooth (3311). In the protection state, the first bevel tooth (3211) and the second bevel tooth (3311) can slide relative to each other.

3. The lifting device according to claim 2, wherein: The first transmission part (32) further includes a first positioning pin, the first positioning pin is coaxially arranged with the first transmission shaft (321), the first positioning pin is connected to the end surface of the first transmission shaft (321) close to the second transmission shaft (331), the second transmission shaft (331) has a first positioning hole at one end close to the first transmission shaft (321), and the first positioning pin is passed through the first positioning hole; Alternatively, the second transmission part (33) further includes a second positioning pin (332), the second positioning pin (332) being coaxially arranged with the second transmission shaft (331), the second positioning pin (332) being connected to the end face of the second transmission shaft (331) close to the first transmission shaft (321), the first transmission shaft (321) having a second positioning hole at one end close to the second transmission shaft (331), and the second positioning pin (332) being passed through the second positioning hole.

4. The lifting device according to claim 2 or 3, wherein: The drive assembly (3) further comprises a support shaft (34), wherein the support shaft (34) is rotatably mounted on the housing (1), and the support shaft (34) is coaxially arranged with the second transmission shaft (331). In the axial direction of the second transmission shaft (331), the support shaft (34) is arranged on a side of the second transmission shaft (331) away from the first transmission shaft (321). The end surface of the support shaft (34) close to the second transmission shaft (331) is provided with a third helical tooth (341), and the end surface of the second transmission shaft (331) close to the support shaft (34) is provided with a fourth helical tooth (3312). In the transmission state, the third helical tooth (341) is meshed with the fourth helical tooth (3312), and in the protection state, the third helical tooth (341) and the fourth helical tooth (3312) can slide relative to each other.

5. The lifting device according to any one of claims 2 to 4, wherein: The second transmission part (33) further includes a transmission gear (334), and the transmission gear (334) is fixed to the second transmission shaft (331); The lifting bracket (2) comprises a bracket body (21) and a lifting rack (22) which are fixedly connected. The bracket body (21) has the mounting position (221). The lifting rack (22) extends along the lifting direction of the lifting bracket (2). The lifting rack (22) is engaged with the transmission gear (334).

6. The lifting device according to claim 5, wherein: The lifting bracket (2) further includes a guide column (23), the guide column (23) being fixedly connected to the bracket body (21), the housing (1) being provided with a guide hole (133), and the guide column (23) and the guide hole (133) being guided and matched along the lifting direction of the lifting bracket (2).

7. The lifting device according to any one of claims 1 to 6, wherein: The housing (1) comprises a front housing (11) and a rear housing (12); the front housing (11) and the rear housing (12) jointly define an installation space; at least part of the drive assembly (3) is disposed in the installation space.

8. A loudspeaker assembly, wherein: include: A lifting device (10), wherein the lifting device (10) is a lifting device (10) according to any one of claims 1 to 7; A speaker (20), wherein the speaker (20) is installed at the installation position (221).

9. The loudspeaker assembly (100) according to claim 8, wherein: The speaker (20) comprises a speaker body and a mask (201), wherein the mask (201) is installed at the installation position (221), a mounting cavity is provided in the mask (201), and the speaker body is arranged in the mounting cavity.

10. A vehicle, wherein: Comprising a loudspeaker assembly (100) according to claim 8 or 9.

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