Lifting structure of vehicle-mounted loudspeaker

Abstract

The utility model relates to the technical field of vehicle-mounted loudspeakers, in particular to a lifting structure of a vehicle-mounted loudspeaker, which comprises a shell, a loudspeaking mechanism movably arranged on the shell and a driving mechanism arranged in the shell and used for driving the loudspeaking mechanism to lift, and the driving mechanism is connected with the loudspeaking mechanism through a transmission mechanism. The transmission mechanism comprises a clutch assembly, and the clutch assembly comprises a fixed shaft arranged in the shell, a first gear and a second gear which are arranged on the fixed shaft in a sleeving mode, and an elastic mechanism used for pressing and attaching the first gear to the second gear. The attached faces of the first gear and the second gear are in linkage connection through a limiting mechanism. The utility model has the advantages of high transmission load, stable operation process, low noise and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle-mounted loudspeakers, in particular to a lifting structure of a vehicle-mounted loudspeaker. Background Art

[0002] With the development of the automotive industry, in order to enrich the user experience, cars are usually equipped with speakers that can be raised and lowered, and additional functions are added to the speakers to experience 3D sound effects and atmospheric environment.

[0003] In the current existing technology, when designing the structure of vehicle-mounted speakers, a clutch gear structure is generally used as a crush protection technical means in the transmission system that drives the speaker to rise and fall. However, for multifunctional and diversified speakers, the load that the clutch structure can withstand is relatively small. As a result, when the vehicle is running or a small external force is applied to the speaker, the crush protection is easily triggered in combination with the speaker's own weight. This is not conducive to the normal lifting and static state of the speaker, nor is it conducive to the diversified design of the speaker and the addition of additional functions. It also affects the stability of the vehicle-mounted speaker during operation and the amount of noise generated. Utility Model Content

[0004] The purpose of the utility model is to provide a lifting structure for a vehicle-mounted speaker, aiming to solve the technical problems existing in the prior art such as unstable operation and high noise caused by the low load capacity of the clutch component.

[0005] In order to solve the above technical problems, the utility model provides a lifting structure for a vehicle-mounted speaker, comprising: a shell, a speaker mechanism movably arranged in the shell, a driving mechanism arranged in the shell and used to drive the speaker mechanism to rise and fall, the driving mechanism being connected to the speaker mechanism through a transmission mechanism, and characterized in that the transmission mechanism includes a clutch assembly, the clutch assembly including a fixed shaft arranged in the shell, a first gear and a second gear sleeved on the fixed shaft, and an elastic mechanism for pressing the first gear tightly against the second gear, and the contacting surface between the first gear and the second gear is linked and connected through a limiting mechanism.

[0006] In the above scheme, the clutch assembly can engage or disconnect the transmission connection inside the gear transmission mechanism, so that the speaker mechanism will not damage the various components and driving parts inside the gear transmission mechanism when subjected to strong external force, thereby improving the operating stability and service life of the lifting structure; the elastic mechanism ensures that the first gear and the second gear can be pressed tightly together and provides a certain degree of pre-tightening force, which can increase the axial force required for the first gear and the second gear to disengage, that is, to increase the load capacity of the transmission mechanism in disguise, so that when the load of the transmission mechanism is within a certain range, the synchronous movement between the first gear and the second gear is maintained; the limiting mechanism sets a corresponding limiting structure on the two gears, so that the relative movement between the first gear and the second gear is prevented until the load applied to the clutch assembly reaches a certain level before relative movement occurs, which is beneficial to increase the load capacity of the clutch assembly, improve the stability of the lifting process of the speaker mechanism and reduce the noise generated by its operation.

[0007] Preferably, the elastic mechanism includes a limiter mounted on the fixed shaft and an elastic member sleeved on the fixed shaft, the limiter is located on a side of the fixed shaft close to the first gear, and the elastic member is located between the limiter and the first gear.

[0008] In the above scheme, one end of the elastic member abuts against the limiting member, and the other end abuts against the first gear, and the elastic member is in a compressed state. The limiting member can limit the axial displacement of the elastic member on the fixed shaft and provide support force for the elastic member to assist the elastic member in applying a pre-tightening force to the first gear to press the second gear. In addition, the limiting member is clamped on the fixed shaft to simplify the assembly process of the elastic mechanism and improve the assembly efficiency of the clutch assembly.

[0009] Preferably, the limiting mechanism includes a plurality of first protrusions spaced apart on the first gear and a plurality of second protrusions spaced apart on the second gear, and the plurality of first protrusions and the plurality of second protrusions are staggered.

[0010] In the above scheme, multiple first protrusions and multiple second protrusions are staggered to achieve a locking connection between the first gear and the second gear. When the driving mechanism drives the transmission mechanism and the speaker mechanism is not subjected to a strong external force, the relative movement between the first gear and the second gear is blocked by the limiting mechanism, the first gear and the second gear move synchronously, and the speaker mechanism rises and falls normally. When the load of the speaker mechanism is large enough or a strong external force is applied, the locking connection between the first gear and the second gear is compressed by the axial force generated by the elastic mechanism and fails. Sliding occurs between the multiple first protrusions and the multiple second protrusions, causing the first gear and the second gear to rotate relative to each other, so as to protect the transmission mechanism from being damaged by strong force and high load, which is beneficial to further improve the load capacity of the clutch assembly, improve the stability of the speaker mechanism lifting process and reduce operating noise.

[0011] Preferably, the driving mechanism includes a control mainboard and a driving component, and the control mainboard is electrically connected to the driving component.

[0012] In the above solution, the control motherboard can provide accurate signals to the driver, so that the driver can drive the transmission mechanism more accurately and stably, thereby improving the accuracy and stability of the lifting and lowering of the speaker mechanism.

[0013] Preferably, the transmission mechanism further includes a worm connected to the output end of the drive mechanism, a double gear meshing with the worm, and a rack connected to the speaker mechanism, the double gear meshing with the first gear, and the rack meshing with the second gear.

[0014] In the above scheme, the worm has a self-locking characteristic, that is, it is difficult to reverse drive the worm when subjected to a large load, which is beneficial to maintaining the stability and safety of the system; the worm and the double gear can achieve a larger reduction ratio, and can convert high-speed, low-torque input into low-speed, high-torque output, and the double gear can disperse the load, so that the stress on each gear is reduced, which is beneficial to further improve the load capacity of the transmission mechanism, reduce noise and vibration during the transmission process and improve the smoothness of operation, thereby improving the durability and reliability of the transmission mechanism; the rack can convert the output of the transmission mechanism into linear motion to drive the speaker mechanism to move along a straight line.

[0015] Preferably, a long strip hole is provided on the rack, a limiting column is provided in the housing, and the rack is slidably clamped on the limiting column through the long strip hole.

[0016] In the above solution, the elongated hole can further limit the moving direction and distance of the rack on the housing, making the force and transmission process of the rack more stable, reducing the generation of noise, and helping to improve the transmission stability of the speaker mechanism;

[0017] Preferably, the speaker mechanism includes a lifting base, the bottom of the lifting base is connected to the transmission mechanism, the top is provided with a decorative component extending to the outside of the shell, and a speaker is provided between the lifting base and the decorative component.

[0018] In the above scheme, the lifting base can increase the design space of the speaker mechanism, improve the design flexibility of the speaker mechanism, and protect the speaker together with the decorative component; the decorative component can improve the recognizability and ornamental value of the speaker mechanism, and avoid inadvertently applying strong force to the speaker mechanism, which may trigger the clutch component or damage the vehicle speaker.

[0019] Preferably, the speaker mechanism further includes at least three guide assemblies arranged in the shell, and the multiple guide assemblies are spaced apart and arranged around the lifting base, the guide assembly includes a guide shaft and a lifting base slidably mounted on the guide shaft, and buffer pads are provided at both ends of the lifting base, and the lifting base is connected to the lifting base.

[0020] In the above scheme, the lifting base moves through at least three guide components, so that the speaker mechanism moves in a fixed direction, which is beneficial to improving the accuracy and stability of the movement of the speaker mechanism; the buffer pad can prevent the lifting base from directly colliding with the outer shell, which is beneficial to reducing the wear between the outer shell or the lifting base and extending its service life. At the same time, it buffers both ends of the moving path of the speaker mechanism, improves the stability of operation and reduces noise generation.

[0021] Preferably, the decoration component includes a decoration bracket, the bottom of the decoration bracket is provided with a mesh cover and is connected to the lifting base, the top of the decoration bracket is provided with a decoration lower cover, and the top of the decoration lower cover is covered with a decoration upper cover.

[0022] In the above scheme, the decorative component can protect the speaker while enriching the design of the speaker mechanism, and remind nearby people of the operating status of the speaker mechanism, so as to avoid applying strong force to the speaker mechanism to trigger the clutch component or damage the vehicle speaker, thereby affecting the lifting process of the speaker mechanism; the decorative bracket can extend the decorative component, enrich the design structure of the decorative component, and provide additional structural strength for the decorative component; the mesh cover can transmit the sound of the speaker to the outside and expose the interior of the speaker mechanism; the upper cover and the lower cover can cover the mesh cover, which can avoid external pollution to a certain extent.

[0023] Preferably, the decoration component further comprises a light panel provided on the top of the lifting base, and a plurality of atmosphere lights are spaced apart on a side of the light panel opposite to the decoration bracket.

[0024] In the above solution, the light panel can add additional visual functions to the speaker mechanism without affecting the speaker. The multi-color light generated by multiple atmosphere lights shines to the outside through the mesh cover, which can enrich the visual experience of the user and further improve the richness and diversity of the speaker mechanism design.

[0025] Compared with the prior art, the beneficial effects of the present invention are:

[0026] The design of a driving mechanism, a transmission mechanism, and a speaker mechanism is adopted, so that the driving mechanism can maintain the stability of the lifting process and reduce the generation of noise when driving the speaker mechanism to lift and lower through the transmission mechanism; in the transmission mechanism, a clutch assembly is designed to be responsible for connecting or disconnecting the transmission chain of the transmission mechanism to protect the internal transmission mechanism and improve the stability and reliability of the entire lifting structure; the elastic mechanism in the clutch assembly provides a certain pre-tightening force for the compression fit between the first gear and the second gear, which can increase the force required for the relative movement between the first gear and the second gear, thereby increasing the load capacity of the transmission mechanism and improving the stability and reliability of the lifting process. In addition, the limiting mechanism provides a larger contact area for the side where the first gear and the second gear fit together, and also greatly increases the force required for the relative movement between them, thereby further increasing the load capacity of the transmission mechanism, improving the stability and reliability of the lifting process, and providing a basis for the diversified design of the speaker mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0028] Figure 1 The figure is a schematic diagram of the overall structure of a lifting structure of a vehicle-mounted speaker.

[0029] Figure 2 A schematic diagram of the internal structure.

[0030] Figure 3 A side view of the clutch assembly.

[0031] Figure 4 A cross-sectional view of the clutch assembly.

[0032] Figure 5 This is an exploded view of the clutch assembly.

[0033] Figure 6 It is a structural diagram of the transmission mechanism.

[0034] Figure 7 This is an exploded view of the decoration component.

[0035] Icons: 100-housing; 101-front cover; 102-base; 103-mounting ear; 110-opening; 120-fixing plate; 130-limiting column; 140-mounting plate; 200-speaker mechanism; 210-lifting base; 211-mounting slot; 220-speaker; 230-decorative component; 231-decorative bracket; 2311-circular frame; 2312-through hole; 2313-mounting seat; 232-decorative lower cover; 233-decorative upper cover; 234-mesh cover; 240-guide component; 241-guide shaft; 242-lifting base; 243-buffer pad; 250-light Plate; 300-driving mechanism; 310-control main board; 320-driving member; 400-transmission mechanism; 410-worm; 420-double gear; 430-clutch assembly; 431-fixed shaft; 432-first gear; 4321-slot; 4322-first protrusion; 433-second gear; 4331-disc; 4332-second protrusion; 434-elastic mechanism; 4341-limiting member; 4342-elastic member; 4343-gasket; 435-sleeve; 4351-limiting part; 4352-annular groove; 436-groove; 440-rack; 441-long strip hole. DETAILED DESCRIPTION

[0036] To facilitate understanding of the present invention, the present invention will be described more fully below with reference to the accompanying drawings. The accompanying drawings illustrate preferred embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein.

[0037] In the description of the present invention, it should be understood that terms such as "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "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 invention and simplifying the description, and do not indicate or imply 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 invention.

[0038] 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 specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means two or more, unless otherwise specifically defined.

[0039] In this embodiment, please refer to Figures 1 to 6As shown, the present invention provides a lifting structure for a vehicle-mounted speaker, which includes a shell 100 with an opening 110 on one side, a speaker mechanism 200 movably arranged on the shell 100, and a driving mechanism 300 and a transmission mechanism 400 arranged inside the shell 100. The output end of the transmission mechanism 400 is connected to the speaker mechanism 200, and the speaker mechanism 200 extends to the outside of the shell 100 through the opening 110. The output end of the driving member 320 is connected to the transmission mechanism 400, and the driving member 320 drives the speaker mechanism 200 to move along the direction of the opening 110 through the transmission mechanism 400; the transmission mechanism 400 includes a clutch assembly 430, which includes a fixed shaft 431 arranged in the shell 100, a first gear 432 and a second gear 433 sleeved on the fixed shaft 431, and an elastic mechanism 434 for pressing the first gear 432 to fit tightly against the second gear 433, and the contacting surfaces of the first gear 432 and the second gear 433 are linked and connected by a limiting mechanism.

[0040] It can be understood that the transmission mechanism 400 is used to transmit the power of the driving mechanism 300 to the speaker mechanism 200. The interior of the transmission mechanism 400 is a transmission chain, and the clutch assembly 430 is used to disconnect or engage the transmission chain to protect the transmission mechanism 400; the opening 110 is a circular structure that allows the speaker mechanism 200 to move up and down.

[0041] In some embodiments, as Figures 3-5 As shown, a sleeve 435 can also be provided on the fixed shaft 431, so that the first gear 432, the second gear 433, and the elastic mechanism 434 are all provided on the sleeve 435, and when the elastic mechanism 434 presses the first gear 432 tightly against the second gear 433, the second gear 433 will abut against the limiting portion 4351 provided on the sleeve, replacing the wear of the fixed shaft 431 with the sleeve 435; when the sleeve 435 is omitted, the limiting portion 4351 is provided on the fixed shaft 431.

[0042] In some embodiments, as Figure 1 and Figure 2 As shown, the housing 100 may include a front cover 101, a base 102 and a plurality of mounting ears 103 spaced apart on the base 102. The front cover 101 covers the base 102 and is detachably connected to the housing 100. The plurality of mounting ears 103 are used to fix the housing 100. In order to unify the installation references of the various components in the driving mechanism 300 and the transmission mechanism 400, a corresponding mounting plate 140 may also be provided in the housing 100.

[0043] In this embodiment, please refer to Figures 3-5As shown, the elastic mechanism 434 includes a limit member 4341 clamped on the fixed shaft 431 and an elastic member 4342 sleeved on the fixed shaft 431. The limit member 4341 is located on one side of the fixed shaft 431 close to the first gear 432, and the elastic member 4342 is located between the limit member 4341 and the first gear 432.

[0044] It can be understood that the limit member 4341 is an E-type retaining spring, and an annular groove (not shown) for the limit member 4341 to engage is provided on the fixed shaft 431, and the annular groove can be located at any position on the fixed shaft 431 close to the side of the first gear 432; the elastic member 4342 is in a compressed state, and its two ends are respectively squeezed toward the limit member 4341 and the first gear 432, providing a pre-tightening force for the first gear 432 to press against the second gear 433.

[0045] In addition, the limit member 4341 can also be a component such as a snap-on piece that can be snapped onto the fixed shaft 431 and provide support for the elastic member 4342, and the annular groove can also change with the structure of the limit member 4341; a gasket 4343 can also be set between the limit member 4341 and the elastic member 4342 to buffer the extrusion force of the elastic member 4342 under normal conditions and the extrusion force that increases when the clutch assembly 430 is triggered.

[0046] In some embodiments where a sleeve 435 is provided, Figures 3-5 As shown, the limiting member 4341, the elastic member 4342, the gasket 4343, and the annular groove 4352 are all provided on the shaft sleeve 435 to reduce the wear of the fixed shaft and improve the stability of the operation.

[0047] In this embodiment, please refer to Figures 3 to 6 As shown, the limiting mechanism includes a plurality of first protrusions 4322 spaced apart on the first gear 432 and a plurality of second protrusions 4332 spaced apart on the second gear 433 , and the plurality of first protrusions 4322 and the plurality of second protrusions 4332 are staggered.

[0048] As can be understood, the plurality of first protrusions 4322 and the plurality of second protrusions 4332 are arranged at circumferential intervals about the fixed shaft 431 in a fan-shaped configuration. The gaps between the plurality of first protrusions 4322 allow the plurality of second protrusions 4332 to engage and engage tightly. When the speaker mechanism 200 is not subjected to a heavy load, the preload provided by the elastic mechanism 434 and the engagement provided by the limit mechanism prevent relative movement between the first gear 432 and the second gear 433, allowing the drive mechanism 300 to normally drive the speaker mechanism 200 up and down via the transmission mechanism 400. When the speaker mechanism 200 is subjected to a heavy load or a strong force, the plurality of first protrusions 4322 and the plurality of second protrusions 4332 may slide relative to each other, thereby negating the preload and engagement between the first gear 432 and the second gear 433 and triggering the protective function of the clutch assembly 430. The first protrusions 4322 and the second protrusions 4332 both have rounded corners to reduce wear during relative sliding and extend the service life of the clutch assembly 430.

[0049] In addition, a long groove 436 may be provided on the first bump 4322 and the second bump 4332 to reduce the contact area therebetween, thereby reducing the friction during relative sliding and improving the heat dissipation performance.

[0050] In some embodiments, after the multiple second protrusions 4332 are inserted into the gaps between the multiple first protrusions 4322, a certain gap can be left between the first protrusions 4322 and the second protrusions 4332, leaving a certain transmission stroke for a short period of strong external force, thereby improving the short-term load capacity of the transmission mechanism 400.

[0051] In some embodiments, since the tooth diameters of the first gear 432 and the second gear 433 are different, the position limiting structure between them should also be adjusted accordingly, such as Figures 3-5 In the embodiment, the second gear 433 is smaller than the first gear 432, so a disc 4331 is provided on the surface of the second gear 433 opposite to the first gear 432, and a slot 4321 for accommodating the disc 4331 is provided on the first gear 432, so that a plurality of first protrusions 4322 are provided on the slot 4321 at intervals along the circumferential direction, and a plurality of second protrusions 4332 are provided on the disc 4331, which are respectively staggered and engaged with the plurality of first protrusions 4322. The elastic member 4342 is in a compressed state, one end of which abuts the limit member 4341, and the other end pushes the first gear 432 to engage with the second gear 433, thereby realizing synchronous movement between the first gear 432 and the second gear 433.

[0052] In this embodiment, please refer to Figure 2 and Figure 6 As shown, the driving mechanism 300 includes a control mainboard 310 and a driving member 320 , and the control mainboard is electrically connected to the driving member.

[0053] It can be understood that the control motherboard 310 provides a high-precision driving signal to the driver 320, so that the driver 320 drives the transmission mechanism 400 more accurately and stably, thereby improving the accuracy and stability of the lifting and lowering of the speaker mechanism 200. The driver 320 can be various types of motors.

[0054] In this embodiment, please refer to Figure 5 and Figure 6 As shown, the transmission mechanism 400 also includes a worm 410 connected to the output end of the driving mechanism 300, a double gear 420 meshing with the worm 410, and a rack 440 connected to the speaker mechanism 200, the double gear 420 meshing with the first gear 432, and the rack 440 meshing with the second gear 433.

[0055] It is understandable that the worm 410 has a self-locking function. Therefore, whether the driving member 320 is running or has stopped, when the sound speaker 200 is under a heavy load or a strong force is applied, the second gear 433 will not affect the operating state of the first gear 432, the double gear 420, the worm 410 and the driving member 320. Instead, the second gear 433 generates an axial force to cause the first gear 432 to compress the elastic mechanism 434, thereby offsetting the preload force, separating the first gear 432 and the second gear 433, and disabling the limit mechanism, thereby triggering the clutch assembly 430.

[0056] The worm 410 and the double gear 420 can achieve a larger reduction ratio, and can convert high-speed, low-torque input into low-speed, high-torque output. Moreover, the double gear 420 can disperse the load, so that the stress on each gear is reduced, which is conducive to further improving the load capacity of the transmission mechanism 400, reducing noise and vibration during the transmission process and improving the smoothness of operation, thereby improving the durability and reliability of the transmission mechanism 400; one end of the rack 440 is connected to the speaker mechanism 200, and the other end is meshed with the second gear 433, which can convert the output of the transmission mechanism 400 into linear motion to drive the speaker mechanism 200 to move in a straight line.

[0057] Specifically, combined with Figure 2 As shown, a long strip hole 441 is provided on the rack 440 , and a limiting column 130 is provided in the housing 100 . The rack 440 is slidably locked on the limiting column 130 through the long strip hole 441 .

[0058] It can be understood that the direction of the elongated hole 441 should be consistent with the moving direction of the speaker mechanism 200, and the position of the limiting column 130 is adjacent to the clutch assembly 430. When the rack 440 is installed on the limiting column 130 through the elongated hole 441, the accuracy of the lifting direction of the speaker mechanism 200 can be improved.

[0059] In addition, in one embodiment, please refer to Figure 2and Figure 6 , a mounting plate 140 and a fixing plate 120 may be provided for the transmission mechanism 400 and the driving member 320 , which can unify their mounting bases and further reduce vibration or component separation during operation of the transmission mechanism 400 .

[0060] In this embodiment, please refer to Figure 1 、 2 and Figure 7 As shown, the speaker mechanism 200 includes a lifting base 210 , the bottom of the lifting base 210 is connected to the transmission mechanism 400 , and the top is provided with a decorative component 230 extending to the outside of the housing 100 , and a speaker 220 is provided between the lifting base 210 and the decorative component 230 .

[0061] It can be understood that the lifting base 210 can be abstracted as a cylindrical shell and is provided with a mounting groove 211, the direction of the groove is consistent with the direction of the opening 110 of the outer shell 100, the speaker 220 is arranged in the mounting groove 211, and the sound position of the speaker 220 is also facing the opening 110, and the bottom of the groove opposite to the groove is connected to the output end of the transmission mechanism 400; the decorative component 230 covers the lifting base 210, and the whole passes through the opening 110 and extends to the outside of the outer shell 100.

[0062] In addition, the output end of the transmission mechanism 400 can also extend to the inside of the lifting base 210 and be connected to it inside the lifting base 210; the shape and structure of the lifting base 210 change with the shape and structure of the speaker 220, and the speaker 220 can be snapped into the installation groove 211.

[0063] Specifically, the speaker mechanism 200 also includes at least three guide assemblies 240 arranged in the outer shell 100. The multiple guide assemblies 240 are arranged at intervals and around the lifting base 210. The guide assembly 240 includes a guide shaft 241 and a lifting base 242 that is slidably mounted on the guide shaft 241. Buffer pads 243 are provided at both ends of the lifting base 242, and the lifting base 242 is connected to the lifting base 210.

[0064] As can be understood, the housing 100 is wide at the top and narrow at the bottom, the speaker mechanism 200 is arranged in the wide part, and the driving mechanism 300 and the transmission mechanism 400 are arranged in the narrow part to speaker, and the guide assembly 240 is arranged in the wide part together with the speaker mechanism 200, and the two ends of the guide shaft 241 are respectively connected to the wide part of the housing 100, and the guiding direction of the guide shaft 241 is consistent with the direction of the opening 110 on the housing 100. Multiple guide assemblies 240 together provide accurate and stable lifting movement for the lifting base 210; the lifting base 210 slides on the guide shaft 241 through the lifting base 242, and the buffer pads 243 at both ends of the lifting base 242 can respectively abut on the housing 100 at both ends of the guide shaft 241 when the speaker mechanism 200 is lifted or lowered, so as to cushion the lifting process of the speaker mechanism 200 and when the speaker mechanism 200 is subjected to strong force or load.

[0065] In addition, the lifting base 242 may also be disposed inside the lifting base 210 , and the guide shaft 241 may pass through the lifting base 210 .

[0066] Specifically, the decoration component 230 includes a decoration bracket 231 , the bottom of the decoration bracket 231 is provided with a mesh cover 234 and is connected to the lifting base 210 , the top of the decoration bracket 231 is provided with a decoration lower cover 232 , and the top of the decoration lower cover 232 is covered with a decoration upper cover 233 .

[0067] It can be understood that the decorative bracket 231 is an "H"-shaped structure as a whole, and its bottom is a circular frame 2311. A through hole 2312 is provided in the middle of the circular frame 2311. When the decorative bracket 231 is covered on the lifting base 210, the speaker 220 is exposed from the through hole 2312, and the mesh cover 234 is arranged at the bottom of the decorative bracket 231 and covers the through hole 2312; the top of the decorative bracket 231 is provided with a mounting seat 2313 covered by the decorative lower cover 232, and the mounting seat 2313 and the decorative lower cover 232 are detachably connected, and the decorative upper cover 233 and the decorative lower cover 232 are also detachably connected. The decorative bracket 231 can be raised and lowered as the lifting base 210 is raised and lowered.

[0068] More specifically, the decoration component 230 further includes a light board 250 disposed on the top of the lifting base 210 , and a plurality of atmosphere lights are spaced apart on a side of the light board 250 opposite to the decoration bracket 231 .

[0069] It can be understood that the light board 250 does not affect the sound propagation of the speaker 220, so the light board 250 is annular and surrounds the speaker 220; the light board 250 is electrically connected to the control main board to realize the turning on and off and adjustment of the light; the light of multiple atmosphere lights can reach the outside of the speaker mechanism 200 through the mesh cover 234, visually enriching the user experience.

[0070] The specific application process of this utility model is as follows:

[0071] Normal operation: The driving member 320 outputs torque, and the worm 410 drives the first gear 432 to rotate through the double gear 420. Because the elastic member 4342 provides a pre-tightening force for the first gear 432 and the second gear 433, the output torque of the driving member 320 is not enough to make the misaligned combination of the multiple second protrusions 4332 and the multiple first protrusions 4322 fail, and the first gear 432 and the second gear 433 move synchronously. Therefore, the first gear 432 drives the second gear 433 to rotate along the fixed shaft 431 and outputs power to the rack 440. The rack 440 is restricted in its moving direction by its elongated hole 441 and the limiting column 130 on the housing 100, providing a stable push-pull force for the speaker mechanism 200, so that the speaker mechanism 200 can be normally lifted and lowered along the multiple guide components 240.

[0072] Triggering protection: A strong external force is applied to the speaker mechanism 200 to stop its movement. At this time, the rack 440 stops moving and the second gear 433 also stops moving. If the lifting is not completed, the motor will continue to rotate, and an axial force will be generated on the first gear 432 to push the first gear 432 to compress the elastic member 4342, causing the misaligned connection between the multiple second protrusions 4332 and the multiple first protrusions 4322 to fail, and relative sliding occurs between the multiple second protrusions 4332 and the multiple first protrusions 4322. The first gear 432 and the second gear 433 are disengaged, resulting in the failure of the synchronous movement between the first gear 432 and the second gear 433, thereby protecting the transmission mechanism 400; if the lifting is completed, but the speaker mechanism 200 is pressed down or pulled up, the first gear 432 does not move, but the second gear 433 rotates between the fixed shaft, and the above situation will also occur, thereby protecting the transmission mechanism 400.

[0073] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A lifting structure for a vehicle-mounted speaker, comprising: A housing, a speaker mechanism movably arranged in the housing, and a driving mechanism arranged in the housing and used to drive the speaker mechanism to rise and fall, wherein the driving mechanism is connected to the speaker mechanism through a transmission mechanism, and is characterized in that the transmission mechanism includes a clutch assembly, the clutch assembly includes a fixed shaft arranged in the housing, a first gear and a second gear sleeved on the fixed shaft, and an elastic mechanism for pressing the first gear to fit onto the second gear, and the fitting surface between the first gear and the second gear is linked by a limiting mechanism.

2. The lifting structure of a vehicle-mounted speaker according to claim 1, characterized in that: The elastic mechanism includes a limiting member clamped on the fixed shaft and an elastic member sleeved on the fixed shaft. The limiting member is located on a side of the fixed shaft close to the first gear, and the elastic member is located between the limiting member and the first gear.

3. The lifting structure of a vehicle-mounted speaker according to claim 1, characterized in that: The limiting mechanism includes a plurality of first protrusions spaced apart on the first gear and a plurality of second protrusions spaced apart on the second gear. The plurality of first protrusions and the plurality of second protrusions are staggered.

4. The lifting structure of a vehicle-mounted speaker according to claim 1, characterized in that: The driving mechanism includes a control mainboard and a driving component, and the control mainboard is electrically connected to the driving component.

5. The lifting structure of a vehicle-mounted speaker according to claim 1, characterized in that: The transmission mechanism also includes a worm connected to the output end of the driving mechanism, a double gear meshing with the worm, and a rack connected to the speaker mechanism, the double gear meshing with the first gear, and the rack meshing with the second gear.

6. The lifting structure of a vehicle-mounted speaker according to claim 5, characterized in that: The rack is provided with an elongated hole, and a limiting column is provided in the shell. The rack is slidably clamped on the limiting column through the elongated hole.

7. The lifting structure of a vehicle-mounted speaker according to claim 1, characterized in that: The speaker mechanism includes a lifting base, the bottom of the lifting base is connected to the transmission mechanism, the top is provided with a decorative component extending to the outside of the shell, and a speaker is provided between the lifting base and the decorative component.

8. The lifting structure of a vehicle-mounted speaker according to claim 7, characterized in that: The speaker mechanism also includes at least three guide assemblies arranged in the shell, and multiple guide assemblies are arranged at intervals and around the lifting base. The guide assembly includes a guide shaft and a lifting base slidably clamped on the guide shaft. Buffer pads are provided at both ends of the lifting base, and the lifting base is connected to the lifting base.

9. The lifting structure of a vehicle-mounted speaker according to claim 7, characterized in that: The decoration component includes a decoration bracket, a mesh cover is provided at the bottom of the decoration bracket and is connected to the lifting base, a decoration lower cover is provided at the top of the decoration bracket, and a decoration upper cover is covered on the top of the decoration lower cover.

10. The lifting structure of a vehicle-mounted speaker according to claim 9, characterized in that: The decoration component further includes a light board arranged on the top of the lifting base, and a plurality of atmosphere lights are spaced apart on a side of the light board opposite to the decoration bracket.

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