A vehicle-mounted lifting speaker platform

Abstract

This utility model discloses a vehicle-mounted lifting horn platform, comprising: a drive motor; a transmission mechanism including an input gear, an intermediate transmission gear, an end transmission gear, and an output gear; the input gear and the drive shaft forming a worm gear mechanism; the end transmission gear and the output gear being coaxial; a lifting platform including a horn platform and a lifting rack, the horn platform being disposed on the upper part of the lifting rack, the lifting rack meshing with the output gear; a clutch structure being provided between the end transmission gear and the output gear; the clutch structure including an elastic element and a top block; the end transmission gear having a receiving groove, the receiving groove being flat cylindrical; the side wall of the receiving groove being evenly distributed with several axial grooves; the output gear including a clutch end and a meshing end, the clutch end being flat cylindrical and embedded in the receiving groove; the side wall of the clutch end being evenly distributed with several radial circular blind holes, the elastic element and the top block being disposed within the circular blind holes; the top block being located outside the elastic element and being pushed against the groove by the elastic element.

Description

Technical Field

[0001] This utility model relates to a vehicle-mounted lifting horn platform. Background Technology

[0002] Retractable horns enhance the visual appeal of a car's interior when concealed, and improve sound quality and effects when raised. Therefore, installing retractable horns in car interiors is quite common. However, retractable horns present a problem: when raised, occupants often tap the horn to lower it, and this force frequently damages the horn's transmission mechanism, causing it to lose its raising and lowering function.

[0003] Chinese Patent 202322972403.X discloses a lifting and collapsible protection mechanism and a vehicle-mounted liftable speaker having the same. The lifting and collapsible protection mechanism includes a drive assembly and a transmission assembly. The drive assembly has a rotating output shaft. The transmission assembly includes a first rotating member, a swing arm rotating member, and a lifting transmission member connected in sequence. The first rotating member is fixedly connected to the rotating output shaft, the swing arm rotating member is drivenly connected to the first rotating member, and the lifting transmission member is drivenly connected to the swing arm rotating member. The lifting transmission member can reciprocate in a direction perpendicular to the axis of the rotating output shaft. The first rotating member and the swing arm rotating member are detachably connected by a collapsible separation part and an abutment part. The collapsible separation part has a first abutment slope on the side near the abutment part, and the abutment part has a second abutment slope on the side near the collapsible separation part. Under a large impact, the collapsible separation part and the abutment part will separate, thereby protecting the internal components.

[0004] The drawback of the above technical solution is that a very small load (clutch force) can trigger the collapse, and after the collapse, the mechanism needs to be pulled up and reset.

[0005] Therefore, providing a vehicle-mounted lifting horn platform with adjustable clutch force and a self-recovering mechanism after collapse is a problem that needs to be solved. Summary of the Invention

[0006] To address the shortcomings of existing technologies, the main objective of this utility model is to provide a vehicle-mounted lifting horn platform that not only has adjustable clutch force but also a mechanism that can self-recover after collapsing.

[0007] To achieve the above-mentioned main objectives, this utility model discloses a vehicle-mounted lifting horn platform, which includes:

[0008] A drive motor, which includes a drive shaft;

[0009] The transmission mechanism includes an input gear, an intermediate transmission gear, an end transmission gear, and an output gear; the input gear and the drive shaft form a worm gear mechanism; the end transmission gear and the output gear are coaxial.

[0010] A lifting platform includes a horn platform and a lifting rack, the horn platform being located on the upper part of the lifting rack, and the lifting rack meshing with an output gear;

[0011] Among them, a clutch structure is provided between the end transmission gear and the output gear; the clutch structure is an elastic top block structure, which includes an elastic element and a top block in contact with the elastic element;

[0012] The end drive gear has a receiving groove on the side facing the output gear. The receiving groove is flat cylindrical. The side wall of the receiving groove is evenly distributed with several axial grooves.

[0013] The output gear includes a clutch end and a meshing end. The clutch end is a flat cylindrical shape and is embedded in a receiving groove. The side wall of the clutch end is evenly distributed with several radial circular blind holes. The number of circular blind holes is the same as the number of grooves. The elastic element and the top block are both set in the circular blind holes. The top block is located outside the elastic element and is pushed against the groove by the elastic element. The meshing end is provided with gear teeth.

[0014] In this invention, the input gear and the drive shaft form a worm gear mechanism. This mechanism has a one-way transmission self-locking function, meaning that only the worm can drive the worm wheel to rotate (either forward or reverse), while the worm wheel cannot drive the worm to rotate (it is self-locking and cannot rotate).

[0015] In this invention, a drive motor drives a lifting rack via a transmission mechanism, thereby raising and lowering the speaker platform. The speaker is mounted on the speaker platform.

[0016] In this invention, the clutch end of the output gear is embedded in the receiving groove. Under normal conditions, due to the elastic force of the elastic element, each top block abuts against the groove, achieving connection between the clutch end and the receiving groove; when the horn is subjected to a large impact force, the top block presses inward against the elastic element, and then the top block slides out of the groove, achieving disengagement (collapse) of the clutch end from the receiving groove. This protects the transmission mechanism from damage and achieves protection against abuse of force.

[0017] In this invention, after the clutch end disengages from the receiving groove, as long as the drive motor restarts and drives the end transmission gear to rotate relative to the clutch end, so that the top block is aligned and embedded in the groove (tooth alignment), the connection between the clutch end (output gear) and the receiving groove (end transmission gear) can be restored.

[0018] In this invention, the elastic element is preferably a spring, and the top block can be spherical or frustum-shaped depending on the ease of slippage.

[0019] In this invention, the clutch force can be adjusted by changing the shape and number of the top block and changing the specifications of the elastic element (e.g., spring).

[0020] According to a specific embodiment of the present invention, it further includes a housing and a mounting plate inside the housing, the mounting plate being fixedly disposed on the inner wall of the housing.

[0021] According to a specific embodiment of the present invention, the transmission mechanism includes a first gear shaft and a second gear shaft; both the first gear shaft and the second gear shaft are mounted on a mounting plate; an input gear and an intermediate transmission gear are sleeved on the first gear shaft; an end transmission gear and an output gear are sleeved on the second gear shaft; the intermediate transmission gear and the end transmission gear mesh.

[0022] According to a specific embodiment of this utility model, the first gear shaft is an optical shaft; the input gear and the intermediate transmission gear are integrated gears. The integrated gears are fitted onto the optical shaft, which allows for smoother rotation.

[0023] According to a specific embodiment of the present invention, the second gear shaft is an optical shaft.

[0024] According to a specific embodiment of this utility model, a bushing is provided on the second gear shaft, and both the end drive gear and the output gear are sleeved on the bushing. By providing the bushing, the frictional force when the end drive gear and the output gear rotate can be reduced.

[0025] According to a specific embodiment of this utility model, limit switches are provided on both the upper and lower sides of the lifting rack. When the lifting rack reaches the set start and stop positions, it triggers the limit switches and sends a position signal to the drive motor, causing the drive motor to stop at the set position.

[0026] According to a specific embodiment of the present invention, the top block is spherical, and correspondingly, the cross-section of the groove is semi-circular.

[0027] According to a specific embodiment of the present invention, the front half of the top block is frustum-shaped, and correspondingly, the cross-section of the groove is trapezoidal.

[0028] This utility model has the following beneficial effects:

[0029] 1. Through the clutch structure, the connection between the end transmission gear and the output gear under normal conditions and the disengagement under abnormal conditions (when subjected to large external forces) can be realized, thereby protecting the transmission mechanism from damage and realizing protection against abuse of force;

[0030] 2. By changing the shape and number of the top blocks and the specifications of the elastic element, the clutch force can be adjusted.

[0031] 3. After the clutch end disengages from the receiving groove, as long as the drive motor restarts, the drive end transmission gear rotates relative to the clutch end, causing the top block to align and embed into the groove, thus restoring the connection between the output gear and the end transmission gear, thereby achieving recovery after collapse.

[0032] To more clearly illustrate the purpose, technical solution, and advantages of this utility model, the following detailed description is provided in conjunction with the accompanying drawings and specific embodiments. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the overall structure of the vehicle-mounted lifting speaker platform in Embodiment 1;

[0034] Figure 2 This is a partial structural schematic diagram of the vehicle-mounted lifting speaker platform of Embodiment 1;

[0035] Figure 3 This is a schematic diagram of another part of the vehicle-mounted lifting speaker platform of Embodiment 1;

[0036] Figure 4 yes Figure 3 Another perspective on displaying content;

[0037] Figure 5 This is a schematic diagram of the assembly of the end drive gear and the output gear in Example 1.

[0038] Figure 6 This is a schematic diagram of the overall assembly of the second gear shaft, the end transmission gear, and the output gear in Embodiment 2;

[0039] Figure 7 yes Figure 6 A schematic diagram of its breakdown. Detailed Implementation

[0040] Many specific details are set forth in the following description in conjunction with embodiments in order to provide a full understanding of the present invention. However, it should be understood that the following embodiments and detailed description are for illustrative purposes only and do not limit the scope of protection of the present invention.

[0041] Example 1 (Spherical Top Block)

[0042] like Figures 1-6 As shown, this embodiment provides a vehicle-mounted lifting horn platform, which includes: a housing 1, a mounting plate 2, a drive motor 3, a transmission mechanism 4, and a lifting platform 5.

[0043] Mounting plate 2 is fixedly mounted on the inner wall of housing 1.

[0044] The drive motor 3 includes a drive shaft 301, and the drive shaft 301 is threaded.

[0045] The transmission mechanism 4 includes a first gear shaft 41, a second gear shaft 42, an input gear 411, an intermediate transmission gear 412, an end transmission gear 421, and an output gear 422. Both the first gear shaft 41 and the second gear shaft 42 are mounted on the mounting plate 2. Both the first gear shaft 41 and the second gear shaft 42 are smooth shafts. The input gear 411 and the drive shaft 301 form a worm gear mechanism. The first gear shaft 41 is fitted with the input gear 411 and the intermediate transmission gear 412. The second gear shaft 42 is fitted with the end transmission gear 421 and the output gear 422. The intermediate transmission gear 412 and the end transmission gear 421 mesh. The input gear 411 and the intermediate transmission gear 412 are integrated gears.

[0046] The lifting platform 5 includes a horn platform 501 and a lifting rack 502. The horn platform 501 is located on the upper part of the lifting rack, and the lifting rack 502 meshes with the output gear 422. Limit switches 503 are provided on both the upper and lower sides of the lifting rack.

[0047] A clutch structure is provided between the end drive gear 421 and the output gear 422. This clutch mechanism is an elastic top block structure, which includes an elastic element (e.g., a spring 604) and a spherical top block (e.g., a top ball 605) in contact with the elastic element. The end drive gear 421 has a receiving groove 601 on the side facing the output gear 422. The receiving groove 601 is flat and cylindrical. Eight axial grooves 602 are evenly distributed on the side wall of the receiving groove 601. The cross-section of the grooves 602 is semi-circular. The output gear 422 includes a clutch end 423 and a meshing end 424. The clutch end 423 is a flat cylindrical shape and is embedded in the receiving groove 601. The side wall of the clutch end 423 is evenly distributed with eight radial circular blind holes 603. A spring 604 and a top ball 605 are provided in the circular blind holes 603. The top ball 605 is located outside the spring 604 and is pushed against the groove 602 by the spring 604. The meshing end 424 is provided with gear teeth.

[0048] Example 2 (Frustum-shaped top block)

[0049] like Figures 6-7 As shown, the difference between this embodiment and embodiment 1 is that: 1. The front half of the top block 705 is frustum-shaped, and correspondingly, the cross-section of the groove 702 on the end transmission gear 421 is trapezoidal; 2. A bushing 423 is fitted on the second gear shaft 42, and the end transmission gear 421 and the output gear 422 are fitted on the bushing 423.

[0050] Although the present invention has been described above through embodiments, the above embodiments are only used to exemplarily describe possible implementations of the present invention, and are not intended to limit the scope of protection of the present invention. Any equivalent substitutions or changes made by those skilled in the art in accordance with the present invention should also be covered by the scope of protection defined by the claims of the present invention.

Claims

1. A vehicle-mounted lifting horn platform, characterized in that, include: A drive motor, which includes a drive shaft; The transmission mechanism includes an input gear, an intermediate transmission gear, an end transmission gear, and an output gear; The input gear and the drive shaft form a worm gear mechanism; the end transmission gear and the output gear are coaxial; A lifting platform includes a horn platform and a lifting rack, wherein the horn platform is disposed on the upper part of the lifting rack, and the lifting rack meshes with the output gear; The end drive gear and the output gear are provided with a clutch structure; the clutch structure is an elastic top block structure, which includes an elastic element and a top block in contact with the elastic element; The end drive gear has a receiving groove on the side facing the output gear, and the receiving groove is flat cylindrical; the side wall of the receiving groove is evenly distributed with a number of axial grooves. The output gear includes a clutch end and a meshing end. The clutch end is a flat cylindrical shape and is embedded in the receiving groove. The sidewall of the clutch end is evenly distributed with a number of radial circular blind holes, the number of which is the same as the number of grooves. The elastic element and the top block are both disposed within the circular blind holes. The top block is located outside the elastic element and is pushed against the groove by the elastic element. The meshing end is provided with gear teeth.

2. The vehicle-mounted lifting horn platform as described in claim 1, characterized in that, It further includes a housing and a mounting plate inside the housing, the mounting plate being fixedly disposed on the inner wall of the housing.

3. The vehicle-mounted lifting horn platform as described in claim 2, characterized in that, The transmission mechanism includes a first gear shaft and a second gear shaft; both the first gear shaft and the second gear shaft are mounted on the mounting plate; the first gear shaft is fitted with the input gear and the intermediate transmission gear; the second gear shaft is fitted with the end transmission gear and the output gear; the intermediate transmission gear and the end transmission gear mesh.

4. The vehicle-mounted lifting horn platform as described in claim 3, characterized in that, The first gear shaft is an optical shaft; the input gear and the intermediate transmission gear are integrated gears.

5. The vehicle-mounted lifting horn platform as described in claim 3, characterized in that, The second gear shaft is an optical shaft.

6. The vehicle-mounted lifting horn platform as described in claim 5, characterized in that, The second gear shaft is provided with a bushing, and the end drive gear and the output gear are both sleeved on the bushing.

7. The vehicle-mounted lifting horn platform as described in claim 1, characterized in that, Limit switches are provided on both the upper and lower sides of the lifting rack.

8. The vehicle-mounted lifting horn platform as described in claim 1, characterized in that, The top block is spherical, and correspondingly, the cross-section of the groove is semi-circular.

9. The vehicle-mounted lifting horn platform as described in claim 1, characterized in that, The front half of the top block is frustum-shaped, and correspondingly, the cross-section of the groove is trapezoidal.

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