A high-low combined horn for railway vehicle

Abstract

This utility model relates to the field of loudspeaker devices and discloses a high-low frequency combined loudspeaker for railway vehicles, including a shell plate. An auxiliary component is provided on the rear surface of the shell plate. A disassembly component is screwed onto the shell plate. The disassembly component includes a mounting cylinder. An mounting plate is fixedly mounted on the front surface of the mounting cylinder. A storage seat is embedded inside the mounting plate, and a positioning groove is formed inside the storage seat. In this utility model, through the cooperation of the mounting plate, locking block, and inner loudspeaker components, and the locking and limiting structure of the locking block, both assembly firmness and maintenance convenience are ensured. When the inner loudspeaker needs repair, only the locking block and screws need to be removed to disassemble the component, without overall disassembly. The cooperation of the storage seat, positioning groove, and positioning post provides precise positioning for the inner loudspeaker, avoiding displacement caused by vibration, ensuring sound accuracy, and balancing assembly efficiency and operational stability.

Description

Technical Field

[0001] This utility model relates to the field of loudspeaker devices, and in particular to a high and low frequency combination loudspeaker for railway vehicles. Background Technology

[0002] As an important audio device in railway vehicles, railway vehicle-mounted loudspeakers need to work stably in the long-term vibration, space-constrained and easily interfered environment of the vehicle. They must ensure the accuracy of high and low frequency sound production, and also have convenient assembly and maintenance performance to meet the stringent requirements of railway transportation for equipment reliability and operation and maintenance efficiency.

[0003] The aforementioned devices suffer from the following drawbacks: insufficient ease of assembly and maintenance. Existing loudspeakers mostly employ an integral, fixed structure, with the outer shell and internal sound-producing components rigidly connected directly by multiple bolts. Furthermore, the internal speaker units lack independent, precise positioning and quick-disassembly / removal structures. When a loudspeaker malfunctions and requires repair or replacement of the internal speaker unit, the connection between the outer shell and the onboard equipment must be disassembled first, followed by the complete removal of the loudspeaker shell to access the internal sound-producing components. This process is not only cumbersome and time-consuming but also prone to causing damage to surrounding components during disassembly, severely impacting the operational efficiency of railway vehicles. Moreover, the existing loudspeaker shells are mostly single-plate structures, lacking targeted rigid reinforcement designs, making them susceptible to deformation and cracking under long-term vibration loads. Therefore, a combined high- and low-frequency loudspeaker for railway vehicles is proposed to address these issues. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a high and low frequency combined loudspeaker for railway vehicles, which aims to improve the problems of insufficient assembly and maintenance convenience, poor vibration stability and structural protection performance in the existing technology.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a railway vehicle-mounted high and low frequency combined horn, including a shell plate, an auxiliary component provided on the rear surface of the shell plate, a disassembly component provided on the shell plate by screws, the disassembly component including a mounting cylinder, an mounting plate fixedly mounted on the front surface of the mounting cylinder, a storage seat embedded inside the mounting plate, a positioning groove provided inside the storage seat, an inner horn being snapped into place on the inner wall of the positioning groove by a positioning post, and a limiting unit for positioning and installation provided on the mounting plate.

[0006] As a further description of the above technical solution: the limiting unit includes a positioning plate and a locking block. The positioning plate is detachably connected to the groove on the upper surface of the mounting plate through the locking block. The locking block is engaged in the slot of the positioning plate. A locking strip is detachably connected to the front end of the positioning plate.

[0007] As a further description of the above technical solution: the auxiliary component includes an auxiliary ring, and multiple sets of limiting seats are fixedly connected to the rear surface of the outer shell plate near the outer side of the auxiliary ring. The locking strip is fixedly installed on the rear surface of the outer shell plate, and multiple sets of reinforcing ribs are fixedly connected to the outer side of the auxiliary ring. An inner positioning cavity is opened on the rear surface of the outer shell plate near the lower side of the auxiliary ring.

[0008] As a further description of the above technical solution: the outer surface of the mounting plate is provided with a frame structure, the interior of the mounting plate is provided with a hollow structure, and four sets of supporting corner plates are fixedly connected to the top corner of the outer surface of the mounting plate.

[0009] As a further description of the above technical solution: the supporting corner plate of the mounting plate is provided with an auxiliary screw groove.

[0010] As a further description of the above technical solution: the top corner of the outer surface of the outer shell plate is set as a rounded corner structure.

[0011] As a further description of the above technical solution: the mounting cylinder is detachably connected to the rear side of the outer shell plate via an additional mounting plate.

[0012] As a further description of the above technical solution: the auxiliary ring is fixedly installed on the rear surface of the outer shell plate.

[0013] This utility model has the following beneficial effects:

[0014] 1. In this utility model, the components such as the mounting plate, the locking block, and the inner speaker in the equipment utilize the mutual cooperation of their connection relationships. The locking and limiting structure of the locking block not only ensures the firmness of the assembly but also greatly improves the convenience of maintenance. When the inner speaker needs to be repaired, only the locking block and screws need to be removed to disassemble the components without disassembling the whole. The cooperation of the storage base, the positioning groove and the positioning post provides precise positioning for the inner speaker, avoids displacement caused by vibration, ensures sound accuracy, and takes into account both assembly efficiency and working stability.

[0015] 2. In this utility model, the auxiliary ring, outer shell plate, limit seat and other components in the equipment cooperate with each other through the connection relationship. The auxiliary ring and the reinforcing rib strengthen the rigidity of the outer shell plate, effectively dispersing the vibration load of the railway vehicle and avoiding deformation or cracking of the outer shell plate. The limit seat ensures that the horn and the vehicle equipment are installed accurately and reduces installation deviation. The locking strip and the locking plate cooperate to form a two-way limit, further improving the overall vibration resistance, enabling the device to work stably for a long time in complex vehicle environment and extending its service life. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the main body of a railway vehicle-mounted high and low frequency combined loudspeaker proposed in this utility model.

[0017] Figure 2 This is a schematic diagram of the rear view area of ​​the main body of a railway vehicle-mounted high and low frequency combined loudspeaker proposed in this utility model.

[0018] Figure 3 This is an exploded view of a partial area of ​​the outer shell of a combined high and low frequency speaker for railway vehicles proposed in this utility model.

[0019] Figure 4 This is an exploded view of a portion of the mounting cylinder of a railway vehicle-mounted high and low frequency combined loudspeaker proposed in this utility model.

[0020] Figure 5 This is a partial schematic diagram of the auxiliary ring of a combined high and low frequency loudspeaker for railway vehicles proposed in this utility model.

[0021] Legend:

[0022] 1. Outer shell; 2. Disassembly assembly; 21. Mounting cylinder; 22. Add-on plate; 23. Positioning plate; 24. Locking block; 25. Storage base; 26. Positioning groove; 27. Inner horn; 28. Positioning post; 3. Screw; 4. Auxiliary assembly; 41. Auxiliary ring; 42. Locking strip; 43. Limiting seat; 44. Inner positioning cavity; 45. Reinforcing rib. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Reference Figure 1 - Figure 3 The present invention provides an embodiment of a high and low frequency combined horn for railway vehicles, comprising a housing plate 1. The outer surface of the housing plate 1 has a rounded corner structure at the top corner. The housing plate 1 is the basic load-bearing structure of the entire horn device, providing an installation reference surface for each component. The rounded corner structure at the top corner of its outer surface can reduce bump damage during installation, and at the same time reduce the risk of interference with other components in the railway vehicle environment, and provide physical protection for the internal components. An auxiliary component 4 is provided on the rear surface of the housing plate 1, and a disassembly component 2 is provided on the housing plate 1 by screws 3.

[0025] Reference Figure 2 - Figure 4The disassembly assembly 2 includes a mounting cylinder 21, which is detachably connected to the rear side of the outer shell plate 1 via an mounting plate 22. The mounting cylinder 21 is used to accommodate and position the core sound-producing structure of the speaker, providing a closed and stable installation space for components such as the inner speaker 27, ensuring the acoustic effect when the speaker is producing sound. Simultaneously, it achieves assembly and fixation with the outer shell plate 1 through connection with the mounting plate 22. The mounting plate 22 is fixedly mounted on the front surface of the mounting cylinder 21. The outer surface of the mounting plate 22 has a frame structure, and the interior of the mounting plate 22 has a hollow structure. Four sets of support corner plates are fixedly connected to the top corners of the outer surface of the mounting plate 22. Auxiliary screw grooves are provided on the support corner plates of the mounting plate 22. Its frame structure and... The hollow internal design reduces structural weight while providing space for the recessed installation of the storage base 25. Four sets of support corner plates and auxiliary screw grooves on the top corner of the outer surface, along with screws 3, enable detachable fixing to the outer shell plate 1, improving assembly and maintenance convenience. The storage base 25 is embedded inside the mounting plate 22, providing a precise installation positioning reference for the inner speaker 27, ensuring its stable position during operation and reducing the impact of vibration on sound accuracy. The storage base 25 has a positioning groove 26 inside, which, in conjunction with the positioning post 28, enables quick snap-fit ​​positioning of the inner speaker 27, ensuring consistent installation position, improving assembly efficiency, and limiting... The inner horn 27 is fixed in the radial and axial direction by a positioning post 28 on the inner wall of the positioning groove 26. The positioning post 28 and the inner horn 27 form a snap-fit, which further strengthens the fixing effect of the inner horn 27 in the housing 25, resists the high-frequency vibration generated during vehicle operation, and avoids relative displacement between the inner horn 27 and the housing 25, which would affect the sound quality. As the core sound-producing component of the horn device, the inner horn 27 is responsible for realizing the high and low frequency sound production function and is the key component for the entire device to realize audio signal conversion. It is fixed by the snap-fit ​​of the positioning groove 26 and the positioning post 28 to ensure stable sound production in the complex vibration environment of railway vehicles. The mounting plate 22 is also equipped with a... The positioning and installation limiting unit includes a positioning plate 23 and a locking block 24. The positioning plate 23 achieves positioning and installation by cooperating with the groove on the upper surface of the mounting plate 22. Its front end is detachably connected to the locking strip 42, which further enhances the installation stability of the mounting plate 22 on the outer shell plate 1 and prevents the component from shifting due to vibration during vehicle operation. The positioning plate 23 is detachably connected to the groove on the upper surface of the mounting plate 22 by the locking block 24. The locking block 24 is engaged in the slot of the positioning plate 23. The engaging structure of the locking block 24 facilitates the subsequent disassembly and maintenance of the disassembled component 2, while ensuring the reliability of the limiting state and preventing the positioning plate 23 from loosening and falling off. The front end of the positioning plate 23 is detachably connected to the locking strip 42.

[0026] Reference Figure 2 , Figure 3 and Figure 5The auxiliary component 4 includes an auxiliary ring 41, which is fixedly installed on the rear surface of the outer shell plate 1. The auxiliary ring 41 is used to strengthen the structural strength of the rear surface of the outer shell plate 1, resist the vibration and impact in the railway vehicle environment, and provide an installation base for the reinforcing rib 45 to form a stable protective structure. Multiple sets of limiting seats 43 are fixedly connected to the outer side of the rear surface of the outer shell plate 1 near the auxiliary ring 41. The limiting seats 43 are used to limit the installation positions of the horn device and the railway vehicle equipment, ensuring the accuracy of the overall horn installation position and preventing displacement after installation. They also help to disperse the installation stress of the device. A retaining strip 42 is fixedly installed on the rear surface of the outer shell plate 1. The retaining strip 42 is detachably connected to the front end of the retaining plate 23, forming a... The bidirectional limiting structure further constrains the displacement of the disassembly component 2, improves the vibration resistance of the entire device, and ensures the stability of the component connection. Multiple sets of reinforcing ribs 45 are fixedly connected to the outer side of the auxiliary ring 41. The setting of the reinforcing ribs 45 further enhances the connection strength between the auxiliary ring 41 and the outer shell plate 1, improves the overall rigidity of the rear surface of the outer shell plate 1, effectively disperses the vibration load generated during the operation of railway vehicles, and extends the service life of the device. An inner positioning cavity 44 is opened on the lower side of the rear surface of the outer shell plate 1 near the auxiliary ring 41. The inner positioning cavity 44 is used to accommodate the wiring connection structure or other auxiliary components of the horn device, realizes the neat storage of the wiring, avoids the wiring being exposed to the outside and being worn, and reduces the interference of the wiring to other components.

[0027] Working principle:

[0028] As the basic load-bearing structure of the entire horn device, the outer shell plate 1 first provides an installation reference surface for the auxiliary component 4 and the disassembly component 2. In the initial stage of assembly, the auxiliary ring 41 in the auxiliary component 4 is connected to the rear surface of the outer shell plate 1 by a fixed installation method. Multiple sets of reinforcing ribs 45 are fixed to the outside of the auxiliary ring 41 to form a rigid support structure on the rear surface of the outer shell plate 1, providing a structural foundation for subsequent overall installation. At the same time, multiple sets of limiting seats 43 are fixed to the rear surface of the outer shell plate 1 near the outside of the auxiliary ring 41. When the horn device is assembled with the railway vehicle equipment, the limiting effect of the limiting seats 43 ensures the accuracy of the overall installation position of the horn, avoids installation deviation, and can disperse the stress generated during device installation, preventing the outer shell plate 1 from deforming due to excessive local stress.

[0029] The disassembly assembly 2 is detachably connected to the outer shell plate 1 via screws 3: screws 3 pass through the auxiliary screw grooves on the support corner plate at the top corner of the mounting plate 22, fixing the mounting plate 22 to the rear side of the outer shell plate 1, thereby completing the initial positioning of the mounting cylinder 21, which is fixedly connected to the front surface of the mounting plate 22. Subsequently, the storage base 25 is embedded into the hollow area inside the mounting plate 22, and the inner speaker 27 achieves precise engagement through the cooperation of the positioning groove 26 and the positioning post 28—the positioning groove 26 is opened inside the storage base 25, and the positioning post 28 set on its inner wall engages with the inner speaker 27. The locking mechanism restricts the radial and axial displacement of the inner horn 27, ensuring the consistency of the inner horn 27's installation position. Finally, the locking plate 23 in the limiting unit is embedded in the groove on the upper surface of the mounting plate 22, and the locking block 24 is locked in the slot of the locking plate 23, thereby fixing the locking plate 23 to the mounting plate 22. The front end of the locking plate 23 is detachably connected to the locking strip 42 fixed on the rear surface of the outer shell plate 1, forming a bidirectional limiting structure, further constraining the displacement of the disassembly component 2, and preventing the disassembly component 2 from loosening and shifting due to vibration during railway vehicle operation.

[0030] As the core sound-generating component, the inner horn 27 receives audio signals transmitted from the railway vehicle system and converts the electrical signals into acoustic signals to achieve high and low frequency sound generation. During this process, the mounting cylinder 21 provides a closed and stable installation space for the inner horn 27, reducing interference from external airflow on the propagation of acoustic signals and ensuring the acoustic effect when the horn is emitting sound. Simultaneously, the storage base 25 acts as a buffer and protector for the inner horn 27, preventing it from directly and rigidly contacting the mounting plate 22, reducing the impact of mounting plate 22 vibration on the sound accuracy of the inner horn 27, and ensuring the stability of the acoustic signal output. Since continuous vibration exists in the railway vehicle environment, the device uses a multi-layered protective structure to resist the effects of vibration. The rounded corners of the outer surface of the outer shell plate 1 reduce the risk of interference with other components and provide physical protection for the internal components. The support structure composed of auxiliary ring 41 and reinforcing rib 45 enhances the vibration resistance of the outer shell plate 1, effectively dispersing the vibration load generated during vehicle operation and preventing cracks in the outer shell plate 1 due to vibration. The limiting unit composed of locking plate 23, locking block 24 and locking strip 42, as well as the locking structure of positioning post 28 and positioning groove 26, respectively fix the components 2 as a whole and the inner speaker 27 at the individual level, preventing component displacement caused by vibration and ensuring the stability of the inner speaker 27's working state. The inner positioning cavity 44 opened on the rear surface of the outer shell plate 1 near the lower side of auxiliary ring 41 is used to accommodate the wiring connection structure of the speaker device, preventing the wiring from being exposed to the outside and worn due to vibration, while preventing the wiring from interfering with other components, ensuring the continuity of audio signal transmission, and further ensuring the stable operation of the acoustic signal conversion of the inner speaker 27.

[0031] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model 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 utility model should be included within the protection scope of the present utility model.

Claims

1. A railway vehicle-mounted high and low frequency combined loudspeaker, comprising a housing (1), characterized in that: The rear surface of the outer shell plate (1) is provided with an auxiliary component (4), and the outer shell plate (1) is provided with a disassembly component (2) by screws (3). The disassembly assembly (2) includes an installation cylinder (21), on the front surface of which an additional plate (22) is fixedly installed. A storage seat (25) is embedded inside the additional plate (22), and a positioning groove (26) is provided inside the storage seat (25). An inner horn (27) is snapped onto the inner wall of the positioning groove (26) by a positioning post (28). A limiting unit for positioning installation is also provided on the additional plate (22).

2. The combined high and low frequency loudspeaker for railway vehicles according to claim 1, characterized in that: The limiting unit includes a positioning plate (23) and a locking block (24). The positioning plate (23) is detachably connected to the groove on the upper surface of the mounting plate (22) via the locking block (24). The locking block (24) is engaged in the slot of the positioning plate (23). The front end of the positioning plate (23) is detachably connected to a locking strip (42).

3. A combined high and low frequency loudspeaker for railway vehicles according to claim 2, characterized in that: The auxiliary component (4) includes an auxiliary ring (41). Multiple sets of limiting seats (43) are fixedly connected to the rear surface of the outer shell plate (1) near the outer side of the auxiliary ring (41). The locking strip (42) is fixedly installed on the rear surface of the outer shell plate (1). Multiple sets of reinforcing ribs (45) are fixedly connected to the outer side of the auxiliary ring (41). An inner positioning cavity (44) is opened on the lower side of the rear surface of the outer shell plate (1) near the auxiliary ring (41).

4. A combined high and low frequency loudspeaker for railway vehicles according to claim 1, characterized in that: The outer surface of the mounting plate (22) is provided with a frame structure, the interior of the mounting plate (22) is provided with a hollow structure, and four sets of supporting corner plates are fixedly connected at the top corner of the outer surface of the mounting plate (22).

5. A combined high and low frequency loudspeaker for railway vehicles according to claim 4, characterized in that: The support corner plate of the mounting plate (22) is provided with an auxiliary screw groove.

6. A combined high and low frequency loudspeaker for railway vehicles according to claim 1, characterized in that: The outer surface of the outer shell plate (1) is provided with a rounded corner structure at the top corner.

7. A combined high and low frequency loudspeaker for railway vehicles according to claim 1, characterized in that: The mounting cylinder (21) is detachably connected to the rear side of the outer shell plate (1) via an mounting plate (22).

8. A combined high and low frequency loudspeaker for railway vehicles according to claim 3, characterized in that: The auxiliary ring (41) is fixedly installed on the rear surface of the outer shell plate (1).

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