Alarm with dustproof and sound amplification effects

Abstract

The utility model relates to an alarm with dustproof and sound amplification effects, and belongs to the technical field of alarms, the alarm comprises a shell, the shell is provided with an inner cavity used for installing and accommodating a sound production element, the shell is provided with a sealing cover used for sealing the inner cavity, the shell is provided with a sound outlet hole, the sound outlet hole is communicated with the inner cavity, and the sound outlet hole is communicated with the sound production element. A dustproof cap assembly is arranged on the outer side of the sound outlet hole and comprises a center baffle and a skirt edge arranged on the outer edge of the center baffle, and the skirt edge is arranged in an inclined mode. Through the dustproof cap assembly, a certain shielding effect can be achieved, the possibility that dust and water vapor in the air enter the shell through the sound outlet hole is reduced, and the service life of the alarm can be prolonged. Besides, the dustproof cap assembly composed of the skirt edge and the central baffle plate is convenient for forming an inverted bowl-shaped acoustic reflection plate on the outer side of the sound outlet hole, thereby facilitating the formation of a better sound reverberation and reflection environment, and improving the sound production effect of the alarm.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of alarm, in particular to an alarm with dustproof and sound amplification effects. BACKGROUND

[0002] With the rapid development of automobile industry, the commercial vehicle reservation quantity is getting larger and larger, which also brings not small challenge to road safety. Especially on urban roads, pedestrians, vehicles mixed, non-motor vehicles rush to the road and other phenomena are common, and the safety situation is becoming increasingly severe. The traffic accidents and personnel casualties caused by the right turn and reversing of the public buses, long-distance buses and logistics large trucks driving in the urban area or suburban area also increase significantly. Therefore, the relevant vehicles must be equipped with voice alarm. The voice alarm is mainly used to issue warning sound during the driving of the vehicle to remind the vehicle and pedestrians to pay attention to safety.

[0003] The existing voice alarm includes a shell and a sound generating element arranged in the shell, and a sound outlet hole is arranged on the shell. However, dust, water vapor and the like in the air can easily enter the inside of the shell through the sound outlet hole, and after a long time of use, the surface of the sound generating element is easy to be dusty and fouled, which affects the sound generating effect and service life of the alarm. CONTENT OF THE INVENTION

[0004] In order to reduce the possibility of dust structure on the surface of the sound generating element and improve the sound generating effect and service life of the alarm, the present application provides an alarm with dustproof and sound amplification effects.

[0005] The alarm with dustproof and sound amplification effects provided by the present application adopts the following technical scheme:

[0006] The alarm with dustproof and sound amplification effects includes a shell, an inner cavity for mounting and accommodating a sound generating element is arranged on the shell, a cover for closing the inner cavity is arranged on the shell, a sound outlet hole is arranged on the shell, the sound outlet hole is communicated with the inner cavity, a dustproof cap assembly is arranged on the outside of the sound outlet hole, the dustproof cap assembly includes a center baffle and a skirt arranged on the outer edge of the center baffle, and the skirt is arranged in an inclined manner.

[0007] By adopting the above technical scheme, the dustproof cap assembly arranged on the outside of the sound outlet hole can play a certain shielding role, which reduces the possibility of dust, water vapor and the like in the air entering the inside of the shell through the sound outlet hole, and further reduces the possibility of dust structure on the surface of the sound generating element, which is beneficial to improve the sound generating effect and service life of the alarm. In addition, the dustproof cap assembly composed of the skirt and the center baffle is beneficial to form an inverted bowl-shaped acoustic reflection plate on the outside of the sound outlet hole, which is beneficial to form a better sound reverberation and reflection environment and improve the sound generating effect of the voice alarm.

[0008] Optionally, the top of the shell is concave downward and forms a bowl groove, the cover is arranged at the bottom of the shell, the sound outlet hole is arranged at the bottom of the bowl groove, and the dustproof cap assembly is arranged on the groove wall of the bowl groove.

[0009] By adopting the above technical scheme, the bowl groove is arranged, the sound reflection and diffusion are facilitated, the sound field is expanded, and the sound amplification effect of the alarm is further improved.

[0010] Optionally, a dust blocking frame is arranged at the joint of the bottom wall and the side wall of the bowl groove.

[0011] By adopting the above technical scheme, the dust blocking frame can block the dust sliding from the side wall of the bowl groove, reduce the possibility of dust accumulation on the bottom wall of the bowl groove, and further reduce the possibility of dust entering the inner cavity through the sound outlet hole.

[0012] Optionally, a connecting rod is arranged at the lower side of the center baffle, and a positioning hole for inserting the connecting rod is arranged on the bottom wall of the bowl groove.

[0013] By adopting the above technical scheme, the dustproof cap assembly is positioned and installed, the possibility of deviation of the dustproof cap assembly and the sound outlet hole is reduced, and the alarm has stable dustproof and sound amplification effects.

[0014] Optionally, the connecting rod is bonded with the hole wall of the positioning hole.

[0015] By adopting the above technical scheme, the connecting rod and the groove wall of the bowl groove are fixed firmly, and the possibility of falling off of the dustproof cap assembly is reduced.

[0016] Optionally, a buckling groove is arranged at the bottom of the shell, and a buckling flange matched with the buckling groove is arranged at the top of the cover.

[0017] By adopting the above technical scheme, the shell and the cover are positioned and buckled.

[0018] Optionally, at least two connecting columns are arranged on the shell, the connecting columns are arranged in the inner cavity, a threaded hole is arranged at the bottom of the connecting column, and a countersunk hole matched with the first connecting hole is arranged on the cover.

[0019] By adopting the above technical scheme, the connecting column and the cover can be fastened by bolts, and the fixing effect of the shell and the cover is further improved.

[0020] Optionally, the top of the connecting column extends to the back wall of the bowl groove.

[0021] By adopting the above technical scheme, the connecting column can support the back wall of the bowl groove, which is conducive to improving the pressure bearing capacity of the groove wall of the bowl groove and improving the overall structural strength of the alarm.

[0022] Optionally, the cover is provided with at least two mounting side ears, and each mounting side ear is provided with a mounting hole.

[0023] By using the above technical scheme, the alarm can be installed in a suitable position through the mounting hole on the mounting side ear, and the alarm is convenient to install and disassemble.

[0024] In summary, the present application has at least one of the following beneficial technical effects:

[0025] 1. By providing the dustproof cap assembly, the dustproof cap assembly arranged outside the sound outlet hole can shield to some extent, reduce the possibility of dust and water vapor in the air entering the inside of the shell through the sound outlet hole, and further reduce the possibility of dust deposition on the surface of the sound generating element, which is conducive to improving the sound generating effect and service life of the alarm. In addition, the dustproof cap assembly composed of the skirt and the center baffle can form an inverted bowl-shaped acoustic reflector outside the sound outlet hole, which is conducive to forming a better sound mixing and reflecting environment and improving the sound quality of the voice alarm.

[0026] 2. By providing the bowl face groove, the sound emitted from the sound outlet hole can be reflected and diffused, which is conducive to expanding the sound field and further improving the sound amplification effect of the alarm.

[0027] 3. By providing the connecting column, on the one hand, the connecting column and the cover can be fastened by bolts, further improving the fixing effect of the shell and the cover; on the other hand, the connecting column can support the back wall of the bowl face groove, which is conducive to improving the pressure bearing capacity of the bowl face groove wall and improving the overall structural strength of the alarm. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 is a whole structure schematic diagram of an alarm with dustproof and sound amplification effects according to an embodiment of the present application.

[0029] Figure 2 is an exploded view showing the assembly relationship of the shell, the cover and the dustproof cap assembly according to an embodiment of the present application.

[0030] Figure 3 is a structure schematic diagram of the shell according to an embodiment of the present application.

[0031] Figure 4 is a sectional view of the dustproof cap assembly according to an embodiment of the present application.

[0032] Figure 5 is a structure schematic diagram of the cover according to an embodiment of the present application.

[0033] Explanation of reference signs: 1, shell; 11, inner cavity; 12, sound hole; 13, bowl face groove; 14, dustproof frame; 15, positioning hole; 16, buckling groove; 17, connecting column; 171, threaded hole; 2, cover; 21, buckling flange; 22, countersunk hole; 23, mounting side ear; 231, mounting hole; 3, dustproof cap assembly; 31, center baffle; 32, skirt; 33, connecting rod. DETAILED DESCRIPTION

[0034] The following will be described in detail in combination with the accompanying drawings. Figures 1-5 The present application is further described in detail.

[0035] Embodiment:

[0036] The embodiment of the present application discloses an alarm with dustproof and sound amplification effects. Referring to Figures 1-3 An alarm with dustproof and sound amplification effects, comprising a shell 1, the bottom of the shell 1 is provided with an inner cavity 11 for mounting and accommodating a sound producing element, and the bottom end of the shell 1 is connected with a cover 2 for closing the inner cavity 11. The shell 1 is provided with a sound hole 12, and the sound hole 12 is in communication with the inner cavity 11. The top of the shell 1 is concave downward and forms a bowl face groove 13, and the sound hole 12 is arranged at the bottom of the bowl face groove 13. Through the arrangement of the bowl face groove 13, the reflection and diffusion of sound are facilitated, which is beneficial to enlarge the sound field and improve the sound amplification effect of the alarm. In the present embodiment, three sound holes 12 are arranged in a circumferential array, and the circumferential array center is located at the center of the bottom wall of the bowl face groove 13.

[0037] Referring to Figures 2-4 The outer side of the sound hole 12 is provided with a dustproof cap assembly 3, the dustproof cap assembly 3 comprises a center baffle 31 and a skirt 32 integrally formed on the outer edge of the center baffle 31, and the skirt 32 is arranged obliquely. The dustproof cap assembly 3 arranged outside the sound hole 12 can play a certain shielding role, which reduces the possibility of dust and water vapor in the air entering the inside of the shell 1 through the sound hole 12, and further reduces the possibility of dust deposition on the surface of the sound producing element, which is beneficial to improve the sound producing effect and service life of the alarm. In addition, the dustproof cap assembly 3 composed of the skirt 32 and the center baffle 31 can form an inverted bowl-shaped acoustic reflection plate outside the sound hole 12, which is beneficial to form a better sound reverberation and reflection environment, and improve the sound quality of the voice alarm. In the present embodiment, the center baffle 31 is a planar circular plate, and the arrangement of the center baffle 31 makes the top of the dustproof cap assembly 3 have a planar surface. Before assembling the dustproof cap assembly 3, the dustproof cap assembly 3 can be stably placed on the assembly platform, which ensures the assembly efficiency.

[0038] Referring to Figure 3The bottom wall of the bowl groove 13 is integrally formed with a dust blocking frame 14 at the joint of the bottom wall and the side wall of the bowl groove 13. The dust blocking frame 14 can block the dust falling from the side wall of the bowl groove 13, reduce the possibility of dust accumulation on the bottom wall of the bowl groove 13, and further reduce the possibility of dust entering the inner cavity 11 through the sound hole 12.

[0039] With reference to Figures 3-4 To facilitate positioning and installation of the dustproof cap assembly 3 and reduce the possibility of deviation of the dustproof cap assembly 3 from the sound hole 12, the lower side of the center baffle 31 is fixed with a connecting rod 33, and the bottom wall of the bowl groove 13 is provided with a positioning hole 15 for insertion of the connecting rod 33. To fix the connecting rod 33 and the groove wall of the bowl groove 13 firmly and reduce the possibility of falling of the dustproof cap assembly 3, the connecting rod 33 is bonded to the hole wall of the positioning hole 15.

[0040] With reference to Figure 2 And Figure 5 To facilitate positioning and fastening of the shell 1 and the cover 2, the bottom of the shell 1 is provided with a fastening groove 16, and the top of the cover 2 is integrally formed with a fastening flange 21 matched with the fastening groove 16. The shell 1 is integrally formed with at least two connecting columns 17 arranged in the inner cavity 11. The bottom of the connecting column 17 is provided with a threaded hole 171, and the cover 2 is provided with a countersunk hole 22 matched with the first connecting hole. The top of the connecting column 17 extends to be fixed to the back wall of the bowl groove 13. In this way, the connecting column 17 and the cover 2 can be fastened by a countersunk bolt, further improving the fixing effect of the shell 1 and the cover 2. In addition, the connecting column 17 can support the back wall of the bowl groove 13, which is conducive to improving the pressure bearing capacity of the groove wall of the bowl groove 13 and improving the overall structural strength of the alarm.

[0041] With reference to Figure 5 The side wall of the cover 2 is integrally formed with at least two mounting side ears 23 at the lower end, and each mounting side ear 23 is provided with a mounting hole 231. The mounting holes 231 on the mounting side ears 23 can be used to mount the alarm to a suitable position, facilitating installation and disassembly.

[0042] The above are preferred embodiments of the present application, which do not limit the protection scope of the present application. Therefore, any equivalent changes made on the basis of the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. An alarm with dustproof and sound amplification effects, characterized by: The invention comprises a shell (1), wherein the shell (1) is provided with an inner cavity (11) for installing and accommodating a sound-emitting element, and the shell (1) is provided with a cover (2) for closing the inner cavity (11). The shell (1) is provided with a sound outlet (12), and the sound outlet (12) is communicated with the inner cavity (11). A dust cap assembly (3) is provided on the outer side of the sound outlet (12), and the dust cap assembly (3) comprises a central baffle (31) and a skirt (32) provided on the outer edge of the central baffle (31), and the skirt (32) is arranged at an angle.

2. The alarm device with dustproof and sound amplification effects according to claim 1, characterized in that: The top of the shell (1) is recessed downward and forms a bowl surface groove (13), the cover (2) is arranged at the bottom of the shell (1), the sound outlet (12) is arranged at the bottom of the bowl surface groove (13), and the dust cap assembly (3) is arranged on the groove wall of the bowl surface groove (13).

3. The alarm device with dustproof and sound amplification effects according to claim 2, characterized in that: A dust-blocking frame (14) is provided at the junction of the bottom wall and the side wall of the bowl surface groove (13).

4. The alarm device with dustproof and sound amplification effects according to claim 2, characterized in that: A connecting rod (33) is provided on the lower side of the central baffle (31), and a positioning hole (15) for inserting the connecting rod (33) is provided on the bottom wall of the bowl surface groove (13).

5. The alarm device with dustproof and sound amplification effects according to claim 4, characterized in that: The connecting rod (33) is bonded to the hole wall of the positioning hole (15).

6. The alarm device with dustproof and sound amplification effects according to claim 1, characterized in that: The bottom of the housing (1) is provided with a snap-fit ​​groove (16), and the top of the cover (2) is provided with a snap-fit ​​flange (21) matching the snap-fit ​​groove (16).

7. The alarm device with dustproof and sound amplification effects according to claim 2, characterized in that: The shell (1) is provided with at least two connecting columns (17), the connecting columns (17) are arranged in the inner cavity (11), the bottom of the connecting columns (17) is provided with a threaded hole (171), and the cover (2) is provided with a countersunk hole (22) matching the first connecting hole.

8. The alarm device with dustproof and sound amplification effects according to claim 7, characterized in that: The top of the connecting column (17) extends to connect with the back wall of the bowl surface groove (13).

9. The alarm device with dustproof and sound amplification effects according to claim 1, characterized in that: At least two mounting side ears (23) are provided on the cover (2), and each mounting side ear (23) is provided with a mounting hole (231).

Images