Vehicle-mounted flat panel loudspeaker for metro vehicle

Abstract

The utility model discloses a vehicle-mounted flat panel loudspeaker for a subway vehicle, and relates to the field of loudspeakers. The box comprises a box body, the top surface of the box body is open, a positioning mechanism is arranged on the inner bottom surface of the box body, and the positioning end of the positioning mechanism is arranged upwards; the top surface of the bearing box is arranged in an unsealed mode, the bottom surface of the bearing box is detachably connected with the top surface of the box body through a buckle, the clamping end of the buckle extends into the bearing box, the bottom surface of the bearing box is provided with a penetrating channel for a circuit board to penetrate through, and the bottom surface of the bearing box is provided with a wire passing hole communicated with an inner cavity of the box body; the two side walls of the circuit board are integrally constructed with a panel sounding module, the top surface of the circuit board is provided with a bearing table, the bearing table abuts against the top surface of the bearing box and is detachably connected with the top surface of the bearing box, and the bottom end of the circuit board extends into the box body and is clamped and positioned with the positioning end of the positioning mechanism; the problems that a circuit board of an existing top hanging type flat panel loudspeaker is complex in installation and prone to colliding with a shell in the working state are solved.

Description

Technical Field

[0001] This utility model relates to the field of loudspeakers, specifically a flat panel loudspeaker for subway vehicles. Background Technology

[0002] In recent years, with the trend towards thinner and more integrated consumer electronics products, flat panel speakers have gradually become an important research direction in the field of audio equipment due to their compact structure and high space utilization. Traditional flat panel speakers typically employ a design that integrates the sound-producing module (such as the voice coil and magnetic circuit system) directly onto a circuit board, which is then fixed inside the speaker housing using screws or clips. However, this design has gradually revealed many shortcomings in practical applications.

[0003] In existing technologies, the circuit board of the integrated sound module is usually connected to the housing by multiple sets of screws, resulting in a cumbersome assembly process. If there are many screws, mismatches due to tolerances can easily cause the circuit board to tilt or experience uneven stress, further affecting the operational stability of the sound module.

[0004] For example, in low-frequency, high-dynamic-range audio scenarios, the circuit board and the inner wall of the enclosure may collide directly due to excessive amplitude, producing abnormal noise and reducing the purity of sound quality.

[0005] In summary, the existing installation structure of integrated sound modules has significant shortcomings in terms of reliability, process compatibility, and user experience. There is an urgent need for a new fixing solution that simplifies the installation process, effectively suppresses structural impacts, and balances heat dissipation and maintainability requirements. Utility Model Content

[0006] The purpose of this invention is to provide a subway vehicle-mounted flat panel speaker that solves the problems of complex circuit board installation and easy collision with the outer casing of existing top-mounted flat panel speakers during operation.

[0007] To solve the above problems, the present invention adopts the following technical means:

[0008] A subway car onboard flat panel speaker, comprising:

[0009] The box body has an open top surface, and the bottom surface inside the box body is equipped with a positioning mechanism with the positioning end of the positioning mechanism facing upwards.

[0010] The carrier box has an open top surface and a bottom surface that is detachably connected to the top surface of the box body via a snap fastener. The snap fastener's snap-fit ​​end extends into the carrier box. The bottom surface of the carrier box has a through-channel for the circuit board to pass through, and the bottom surface of the carrier box has a wire through hole that communicates with the inner cavity of the box body.

[0011] The two side walls of the circuit board are integrated with flat panel sound modules. A receiving platform is installed on the top surface of the circuit board. The receiving platform is abutted against the top surface of the carrier box and is detachably connected. The bottom end of the circuit board extends into the box and is engaged with the positioning end of the positioning mechanism for positioning.

[0012] Preferably, the side of the housing is provided with several through holes, and the flat panel sound module is positioned facing the through holes.

[0013] Furthermore, the positioning mechanism includes a pair of clamping plates disposed on the bottom surface of the box body and a rubber abutment block disposed on the side wall of the box body. The clamping plates are arranged parallel to the horizontal direction of the circuit board. The bottom end of the circuit board is clamped between the two clamping plates. A rubber pad that fits against the circuit board is covered on the side of the clamping plates facing the circuit board. The side wall of the box body is constructed with a moving channel for the rubber abutment block to pass through. The rubber abutment block includes a sliding block that is slidably disposed in the moving channel. A rubber block is installed at one end of the sliding block that extends toward the box body. The rubber block extends between the two clamping plates and abuts against the side end of the circuit board. A limiting plate is installed at one end of the sliding block that is outside the box body. The limiting plate abuts against the outer side wall of the box body.

[0014] Furthermore, the buckle includes a rigid vertical rod installed at the top of the box body, a snap-fit ​​block installed on the top side of the vertical rod, a slot for the vertical rod to pass through on the bottom surface of the carrier box, a positioning groove for the snap-fit ​​block to be embedded in the side wall of the carrier box, the outer wall of the snap-fit ​​block fitting against the inner wall of the positioning groove, the two sides of the slot perpendicular to the side wall of the carrier box fitting against the side wall of the vertical rod, the distance between the slot and the two sides of the side wall of the carrier box being greater than the thickness of the vertical rod, the vertical rod fitting against one side and separating from the other side, a clamping mechanism installed on the inner bottom surface of the carrier box, the clamping mechanism including a fixing plate fitting against the inner bottom surface of the carrier box, a top-fitting block extending into the slot installed on the bottom surface of the fixing plate, the side wall of the top-fitting block abutting against the inner side wall of the slot and the side wall of the vertical rod respectively, and the fixing plate and the bottom surface of the carrier box being detachably connected by locking bolts.

[0015] Furthermore, the side wall of the carrier box is constructed with horizontal threaded holes, and mounting bolts are installed and removed from the threaded holes.

[0016] Furthermore, the receiving platform is detachably connected to the bottom inner wall of the carrier box via positioning bolts.

[0017] This utility model has the following beneficial effects during use:

[0018] The circuit board integrating the sound module is placed inside the housing, with its bottom end engaging with the positioning end of the positioning mechanism. The top end of the circuit board is positioned by the mutual positioning of the receiving platform and the carrier box. This positioning mechanism prevents significant wobbling of the circuit board's bottom end during operation, which would otherwise occur due to the lack of screws for positioning. Furthermore, the positioning mechanism significantly increases the distance between the side of the circuit board and the inner wall of the housing. This increased space facilitates airflow for cooling, improving heat dissipation, and effectively prevents minor wobbling from causing the circuit board to collide with the inner wall, thus affecting sound production. Assembly is simple: first, position the top end of the circuit board with the receiving platform; then, insert the bottom end of the circuit board through the channel on the carrier box; finally, use screws to position the receiving platform and carrier box; and finally, connect the carrier box to the housing using snap-fit ​​mechanisms, ensuring the bottom end of the circuit board is engaged with the positioning mechanism. This completes the installation process easily. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model.

[0020] Figure 2 This is a schematic diagram of the exploded structure of this utility model.

[0021] Figure 3 for Figure 1 A top-view structural diagram.

[0022] Figure 4 for Figure 3 A schematic diagram of the AA cross-sectional structure.

[0023] Figure 5 for Figure 3 A schematic diagram of the BB cross-sectional structure.

[0024] Figure 6 for Figure 4 A magnified schematic diagram of the structure at point A in the middle.

[0025] Among them, 1-box body, 2-positioning mechanism, 3-carrying box, 4-buckle, 5-through channel, 6-wire hole, 7-circuit board, 8-receiving platform, 9-through hole, 10-clamping plate, 11-rubber abutment block, 12-moving channel, 13-sliding block, 14-rubber block, 15-limiting plate, 16-vertical rod, 17-clamping block, 18-hole groove, 19-positioning groove, 20-fixing plate, 21-top connecting block, 22-locking bolt, 23-mounting bolt, 24-positioning bolt. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can typically be arranged and designed in various different configurations.

[0027] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0028] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other.

[0029] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0030] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only used for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0031] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0032] Please refer to Figures 1 to 6As shown, a subway car onboard flat panel speaker includes:

[0033] The box body 1 has an open top surface, and the bottom surface inside the box body 1 is equipped with a positioning mechanism 2, with the positioning end of the positioning mechanism 2 facing upward.

[0034] The carrier box 3 has an open top surface and its bottom surface is detachably connected to the top surface of the box body 1 via a buckle 4. The snap-fit ​​end of the buckle 4 extends into the carrier box 3. The bottom surface of the carrier box 3 is constructed with a through-channel 5 for the circuit board 7 to pass through, and the bottom surface of the carrier box 3 is constructed with a wire hole 6 that communicates with the inner cavity of the box body 1.

[0035] The two side walls of the circuit board 7 are integrated with flat panel sound modules. The top surface of the circuit board 7 is equipped with a receiving platform 8. The receiving platform 8 is abutted against the top surface of the carrier box 3 and is detachably connected. The bottom end of the circuit board 7 extends into the box body 1 and is engaged with the positioning end of the positioning mechanism 2 for positioning.

[0036] In this way, the circuit board 7 integrating the sound module is placed inside the housing 1, with its bottom end engaging with the positioning end of the positioning mechanism 2, and the top end of the circuit board 7 positioned by the mutual positioning of the receiving platform 8 and the carrier box 3. Because of the positioning mechanism 2, on the one hand, it prevents significant shaking of the bottom end of the circuit board 7 due to the lack of screw positioning when the sound module is working; on the other hand, with the positioning mechanism 2 inside the housing 1, it significantly increases the distance between the side of the circuit board 7 integrating the sound module and the inner wall of the housing 1. The increased space not only facilitates the passage of cooling airflow and improves the heat dissipation capacity of the circuit board 7, but also effectively prevents the circuit board 7 from colliding with the inner wall of the housing 1 due to slight shaking, thus affecting sound production. Meanwhile, during the assembly of circuit board 7, it is only necessary to first position the top of circuit board 7 with the support platform 8, then insert the bottom of circuit board 7 through the through-channel 5 on the carrier box 3, then use screws to position the support platform 8 and the carrier box 3, and finally connect the carrier box 3 and the box body 1 through the buckle 4, while ensuring that the bottom of circuit board 7 is engaged with the positioning mechanism 2, so that the installation can be easily completed.

[0037] In order to ensure the ventilation and heat dissipation capacity inside the housing 1 and to facilitate the sound transmission of the flat panel speaker module on the circuit board 7, a number of through holes 9 are distributed on the side of the housing 1, and the flat panel speaker module is arranged facing the through holes 9.

[0038] Furthermore, the positioning mechanism 2 includes a pair of clamping plates 10 disposed on the bottom surface of the box body 1 and a rubber abutment block 11 disposed on the side wall of the box body 1. The clamping plates 10 are arranged parallel to the horizontal direction of the circuit board 7. The bottom end of the circuit board 7 is clamped between the two clamping plates 10. The side of the clamping plates 10 facing the circuit board 7 is covered with a rubber pad that fits against the circuit board 7. The side wall of the box body 1 is constructed with a moving channel 12 for the rubber abutment block 11 to pass through. The rubber abutment block 11 includes a sliding block 13 slidably disposed in the moving channel 12. A rubber block 14 is installed at one end of the sliding block 13 extending toward the box body 1. The rubber block 14 extends between the two clamping plates 10 and abuts against the side end of the circuit board 7. A limiting plate 15 is installed at one end of the sliding block 13 located outside the box body 1. The limiting plate 15 abuts against the outer side wall of the box body 1.

[0039] Thus, for the positioning mechanism 2, the bottom end of the circuit board 7 is clamped by the two clamping plates 10. The clamping plates 10 are not only used to clamp the circuit board 7, but also to increase the distance between the inner wall of the box 1 and the surface of the circuit board 7. After the clamping plates 10 have clamped the circuit board 7, the two ends between the clamping plates 10 are filled by rubber abutment blocks 11. The rubber blocks 14 on the rubber abutment blocks 11 seal the space between the clamping plates 10. This not only better limits the positioning of the circuit board 7, but also avoids the situation where the contact surface between the circuit board 7 and the hard abutment component is small due to the thinness of the circuit board 7, which would affect the positioning effect and make it easy for the circuit board 7 to move relative to the hard abutment component and collide during operation.

[0040] Furthermore, regarding the latch 4 used for positioning the box 1 and the carrier box 3, the latch 4 includes a rigid vertical rod 16 installed at the top of the box 1, a latching block 17 installed on the top side of the vertical rod 16, a slot 18 for the vertical rod 16 to pass through on the bottom surface of the carrier box 3, a positioning groove 19 for the latching block 17 to be inserted into the side wall of the carrier box 3, the outer wall of the latching block 17 fitting against the inner wall of the positioning groove 19, and the two sides of the slot 18 perpendicular to the side wall of the carrier box 3 fitting against the side wall of the vertical rod 16. The distance between the groove 18 and the two sides of the side wall plane of the bearing box 3 is greater than the thickness of the vertical rod 16. The vertical rod 16 is attached to one side and separated from the other side. A clamping mechanism is installed on the inner bottom surface of the bearing box 3. The clamping mechanism includes a fixing plate 20 that is attached to the inner bottom surface of the bearing box 3. A top contact block 21 that extends into the groove 18 is installed on the bottom surface of the fixing plate 20. The side wall of the top contact block 21 abuts against the inner side wall of the groove 18 and the side wall of the vertical rod 16, respectively. The fixing plate 20 is detachably connected to the bottom surface of the bearing box 3 by locking bolts 22.

[0041] In this way, during the assembly process, the clamping mechanism is first disassembled so that the vertical rod 16 with the snap-fit ​​block 17 can pass smoothly through the slot 18 and the snap-fit ​​block 17 can be installed into the positioning slot 19. After installation, the top contact block 21 of the clamping mechanism is installed into the slot 18. The top contact block 21 is used to abut the vertical rod 16. On the one hand, this prevents the vertical rod 16 from shaking in the slot 18, which would cause vibration when the circuit board 7 is working and affect the assembly stability. On the other hand, it also prevents the snap-fit ​​block 17 from coming out of the positioning slot 19, thus improving the stability of the assembly.

[0042] Furthermore, the side wall of the carrier box 3 is constructed with a horizontal threaded hole, and a mounting bolt 23 is installed and removed from the threaded hole.

[0043] Thus, the mounting bolts 23 on the side wall of the carrier box 3 are used to hoist the assembled flat panel speaker into the subway car.

[0044] Furthermore, the receiving platform 8 and the inner wall bottom surface of the bearing box 3 are detachably connected by positioning bolts 24.

[0045] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A subway vehicle-mounted flat panel speaker, characterized in that, include: The box body (1) has an open top surface and a positioning mechanism (2) is constructed on the bottom surface inside the box body (1). The positioning end of the positioning mechanism (2) is facing upward. The carrier box (3) has an open top surface and a bottom surface that is detachably connected to the top surface of the box body (1) via a buckle (4). The snap-fit ​​end of the buckle (4) extends into the carrier box (3). The bottom surface of the carrier box (3) is constructed with a through-channel (5) for the circuit board (7) to pass through. The bottom surface of the carrier box (3) is constructed with a wire hole (6) that communicates with the inner cavity of the box body (1). The two side walls of the circuit board (7) are integrated with a flat-panel sound module. The top surface of the circuit board (7) is equipped with a support platform (8). The support platform (8) is abutted against the top surface of the carrier box (3) and is detachably connected. The bottom end of the circuit board (7) extends into the box body (1) and is engaged with the positioning end of the positioning mechanism (2) for positioning.

2. The subway vehicle-mounted flat panel speaker according to claim 1, characterized in that, The side of the box (1) is provided with several through holes (9), and the flat panel sound module is positioned facing the through holes (9).

3. A subway vehicle-mounted flat panel speaker according to claim 1, characterized in that, The positioning mechanism (2) includes a pair of clamping plates (10) disposed on the bottom surface of the box body (1) and a rubber abutment block (11) disposed on the side wall of the box body (1). The clamping plates (10) are arranged parallel to the horizontal direction of the circuit board (7). The bottom end of the circuit board (7) is clamped between the two clamping plates (10). The side of the clamping plates (10) facing the circuit board (7) is covered with a rubber pad that fits against the circuit board (7). The side wall of the box body (1) is constructed for the rubber abutment block (11). The moving channel (12) through which the rubber abutment block (11) passes includes a sliding block (13) slidably disposed in the moving channel (12). A rubber block (14) is installed at one end of the sliding block (13) extending toward the box body (1). The rubber block (14) extends between the two clamping plates (10) and abuts against the side end of the circuit board (7). A limiting plate (15) is installed at one end of the sliding block (13) located outside the box body (1). The limiting plate (15) abuts against the outer wall of the box body (1).

4. A subway vehicle-mounted flat panel speaker according to claim 1, characterized in that, The buckle (4) includes a rigid vertical rod (16) installed at the top of the box (1). A snap-fit ​​block (17) is installed on the top side of the vertical rod (16). The bottom surface of the carrier box (3) is constructed with a slot (18) for the vertical rod (16) to pass through. The side wall of the carrier box (3) is constructed with a positioning groove (19) for the snap-fit ​​block (17) to be embedded. The outer wall of the snap-fit ​​block (17) is fitted to the inner wall of the positioning groove (19). The two sides of the slot (18) perpendicular to the side wall of the carrier box (3) are fitted to the side wall of the vertical rod (16). The slot (18) and the carrier box (3) The distance between the two sides of the sidewall plane is greater than the thickness of the vertical rod (16). The vertical rod (16) is attached to one side and separated from the other side. The inner bottom surface of the bearing box (3) is equipped with a clamping mechanism. The clamping mechanism includes a fixing plate (20) that is attached to the inner bottom surface of the bearing box (3). The bottom surface of the fixing plate (20) is equipped with a top contact block (21) that extends into the slot (18). The sidewall of the top contact block (21) abuts against the inner sidewall of the slot (18) and the sidewall of the vertical rod (16) respectively. The fixing plate (20) and the bottom surface of the bearing box (3) are detached and connected by locking bolts (22).

5. A subway vehicle-mounted flat panel speaker according to claim 1, characterized in that, The side wall of the carrier box (3) is constructed with a horizontal threaded hole, and a mounting bolt (23) is installed in the threaded hole.

6. A subway vehicle-mounted flat panel speaker according to claim 1, characterized in that, The receiving platform (8) and the bottom surface of the inner wall of the bearing box (3) are detached and connected by positioning bolts (24).

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