CN213354318U

CN213354318U - Vehicle-mounted low-frequency alarm

Info

Publication number: CN213354318U
Application number: CN202022323623.6U
Authority: CN
Inventors: 张成会; 邹运
Original assignee: Shenyang Guangxin Pioneer Traffic High Technology Co ltd
Current assignee: Shenyang Guangxin Pioneer Traffic High Technology Co ltd
Priority date: 2020-10-19
Filing date: 2020-10-19
Publication date: 2021-06-04
Anticipated expiration: 2030-10-19

Abstract

A vehicle-mounted low-frequency alarm belongs to the technical field of vehicle-mounted electronic equipment and overcomes the defects that the prior vehicle-mounted low-frequency alarm system is inconvenient and inflexible to use and has complex structure because a speaker net is arranged at the top of a shell, and the manufacturing cost of the shell is increased, and is characterized in that a plurality of rhombic sound outlet holes are arranged in front of an upper shell, the speaker net is bonded on the inner wall of the upper shell corresponding to the positions of the rhombic sound outlet holes, a speaker support is arranged on the inner wall of a lower shell, a low-frequency speaker is fixedly connected on the speaker support, a circuit board comprises a power switch, a power module, a frequency division main control chip and a power amplifier module which are sequentially connected in series, the frequency division main control chip is connected with a sound source, and the power amplifier module is connected with the low-frequency speaker, the police cruiser can warn vehicles and pedestrians near the police cruiser to pay attention to the police car running at a high speed, and is beneficial to reducing accidents.

Description

Vehicle-mounted low-frequency alarm

Technical Field

The utility model belongs to the technical field of on-vehicle electronic equipment, in particular to on-vehicle low frequency alarm.

Background

The police cruiser sounds an alarm in performing a task to inform vehicles and pedestrians around the police cruiser of the high-speed police car in advance, but the alarm provided in the prior art police cruiser is a high-frequency alarm. Although the high frequency alarm has a wide application range, due to the structure of human ears and the characteristic of poor penetration of the high frequency alarm, if the surrounding sound is disordered, the arrival of the police car is probably ignored. In response to this situation, police cruisers in the prior art have been equipped with low frequency alarm systems to assist in the high frequency alarm system. However, in the prior art, the low-frequency alarm system of the police car in the united states is composed of two parts, one part is a main alarm, namely an alarm which gives out a siren tone, and comprises a control panel, a host and an alarm horn, and the other part is a heavy bass alarm, which is an additional device and consists of a processor and a special bass horn, and the low-frequency sound is generated by the low-frequency sound horn to achieve the characteristic clattering and clattering vibration feeling of low frequency, so that drivers and pedestrians of vehicles nearby the police patrol car can feel subconscious and the arrival of the police car is perceived. Therefore, the existing vehicle-mounted low-frequency alarm system is composed of two parts, and is inconvenient and inflexible to use.

In prior art, with the utility model discloses the technique that comparatively is close is utility model with application number CN201721831989.6, and this utility model provides an analog module of car siren for solving the problem that new forms of energy electric automobile loudspeaker product simulation engine sound belongs to the vacancy state. The utility model comprises a shell assembled by an upper shell, a lower shell and a middle shell support, wherein a horn magnetic circuit, a horn support and a horn sound film are arranged inside the shell, the horn support is fixed on the inner wall of the shell support, a tuning net is also arranged at the top of the upper shell, the tuning net is fixed on the surface of the upper shell by a tuning cover above the tuning net, a dustproof protective cover is also arranged above the tuning cover and is fixed with the upper shell, an integrated chip is also arranged at the bottom inside the shell, the integrated chip is provided with a terminal wire for connecting an external power supply, when a vehicle is started, a 12V power supply is switched on, the power supply carries out targeted variable voltage power supply on a power amplification module and a main chip power supply module, and the power; the 5V main chip power supply module is connected with the main chip, after the main chip supplies power, the automobile engine sound module is activated, and the horn unit emits simulated starting automobile sound and waiting driving sound. However, this utility model only installs loudspeaker in the casing, only has the sound of sending through loudspeaker imitation fuel automobile, warns passerby to notice traffic safety's function, and only is applicable to new forms of energy electric automobile, and is not suitable for police cruiser, moreover, because this utility model sets up the horn mesh at last casing top, the top still need be equipped with dust screen, dustproof visor and water-proof wall, and the structure is complicated, has increased the cost of manufacture of casing. In addition, this utility model is equipped with the fixing bolt pillar in simulation module both sides, installs in the automobile body through the panel beating, and installation intensity is lower. The utility model discloses a CN201420093533.4 application number's utility model discloses a vehicle-mounted electronic alarm, this utility model adopts digital power amplifier electronic technology to realize vehicle-mounted alarm's function, its structure is including the input device who is used for transmitting function signal and speech signal, an alarm device for receiving the speech input device who comes from input device's function signal and speech signal and connect, alarm device includes the second treater, the output of second treater is connected with digital power amplifier circuit and warning light control circuit respectively, digital power amplifier circuit is connected with loudspeaker, warning light control circuit is connected with warning light. However, this utility model has no low-frequency alarm sound output, and has only a high-frequency alarm sound output, and cannot assist the high-frequency alarm sound output device as a low-frequency alarm sound output device.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that, overcome prior art's weak point, provide a simple structure, casing cost of manufacture is low, installation intensity is high, is applicable to police cruiser's an on-vehicle low frequency alarm.

The utility model discloses a technical scheme include casing and lower casing, go up the casing and connect through first self-tapping screw with the casing down go up the preceding sound hole that is equipped with a plurality of rhombus of casing, the inner wall that corresponds the last casing of the position of the sound hole of a plurality of rhombus bonds and has the loudspeaker net the inner wall of casing is equipped with the loudspeaker pillar down, with second self-tapping screw fixedly connected with low frequency loudspeaker on the loudspeaker pillar, is connected with the circuit board at the bottom surface inner wall of casing for the third self-tapping screw down, has the transformer with the fourth self-tapping screw connection on the circuit board, is equipped with the connection terminal on the circuit board.

The circuit board comprises a power switch, a power module, a frequency division main control chip and a power amplifier module which are sequentially connected in series, wherein the power module is connected with the power amplifier module in parallel, the frequency division main control chip is connected with a sound source, and the power amplifier module is connected with a low-frequency loudspeaker.

And a screw cover is arranged at the position of the first self-tapping screw on the upper shell.

The bottom surface of the lower shell is provided with a radiator, and the bottom surface of the lower shell is provided with a support column.

The lower shell is provided with 2 mounting brackets, the mounting brackets are provided with connecting holes, strip holes and a plurality of round holes, and the mounting brackets are also provided with indentation-shaped reinforcing ribs.

Compared with the prior art, the beneficial effects of the utility model are that:

(1) the utility model has simple structure, a plurality of rhombic sound outlet holes are arranged in front of the upper shell, and the inner wall of the upper shell corresponding to the positions of the plurality of rhombic sound outlet holes is bonded with the horn net, thereby overcoming the problems that the prior art is provided with a tuning net at the top of the upper shell, the structure is complex and the manufacturing cost of the shell is increased;

(2) the utility model connects 2 mounting brackets installed on the lower shell with the vehicle body through connecting bolts, and when the mounting brackets are connected with the vehicle body, the 2 mounting brackets are annular to clamp and fix the lower shell, so that the mounting strength is high and the stability is good;

(3) the utility model discloses be in the same place low frequency loudspeaker and power amplifier module integration, also can install low frequency loudspeaker and power amplifier module respectively, convenient to use is nimble, be connected with the sound source through frequency division main control chip, carry out the frequency division after frequency division main control chip receives the sound signal of sound source, enlarge through power amplifier module, rethread low frequency loudspeaker send the low frequency alarm, can assist the not enough of high frequency alarm sound output, the police cruiser car of going at a high speed is noticed to vehicle and pedestrian near warning police cruiser, notice safe driving, help reducing the emergence of accident.

Drawings

Fig. 1 is a front view of the present invention;

fig. 2 is a top view of the present invention;

FIG. 3 is a cross-sectional view A-A of FIG. 2;

FIG. 4 is a cross-sectional view B-B of FIG. 3;

fig. 5 is a bottom view of the present invention;

fig. 6 is a perspective view of the mounting bracket of the present invention;

fig. 7 is a working principle diagram of the present invention.

In the figure:

1. an upper shell, 2, a screw cover,

3. a support is arranged on the base plate, and the support is arranged on the support,

3-1 connecting hole, 3-2 elongated hole,

3-3 round holes, 3-4 indentation-shaped reinforcing ribs,

4. a lower shell, 5, a support, 6, a radiator, 7, a sound outlet,

8. a speaker mesh, 9. a low frequency speaker, 10. a speaker support,

11. a first tapping screw, 12, a second tapping screw,

13. a third self-tapping screw, 14, a fourth self-tapping screw, 15, a connecting bolt,

16. a circuit board is provided with a plurality of circuit boards,

16-1, a power switch, 16-2, a power module,

16-3, a frequency division main control chip, 16-4, a power amplifier module, 16-5, a sound source,

17. transformer, 18, wire holder, 19 wire hole.

Detailed Description

The technical solution of the present invention will be described in detail with reference to the accompanying drawings.

As shown in fig. 1 to 5, the technical solution of the present invention includes an upper casing 1 and a lower casing 4, wherein the upper casing 1 and the lower casing 4 are connected by 4 first tapping screws 11, and a screw cover 2 is disposed at the position of the upper casing 1 where the 4 first tapping screws 11 are located, so as to perform the functions of decoration, dust prevention and water prevention; the front surface of the upper shell 1 is provided with a plurality of rhombic sound outlet holes 7, the inner wall of the upper shell 1 corresponding to the positions of the plurality of rhombic sound outlet holes 7 is bonded with a speaker mesh 8, the bottom surface of the lower shell 4 is provided with a radiator 6, the bottom surface of the lower shell 4 is provided with 4 pillars 5, the bottom surface of the raised lower shell 4 is used for reserving a radiating gap for the radiator 6, the bottom surface of the lower shell 4 is further provided with a wire outlet hole 19, the inner wall of the lower shell 4 is provided with 4 speaker pillars 10, the 4 speaker pillars 10 are fixedly connected with a low-frequency speaker 9 by second self-tapping screws 12, the inner wall of the bottom surface of the lower shell 4 is connected with a circuit board 16 by third self-tapping screws 13, the circuit board 16 is connected with a transformer 17 by fourth self-tapping screws 14, and the circuit board 16 is provided with a wire holder.

As shown in fig. 7, the circuit board 16 is provided with a power switch 16-1, a power module 16-2, a frequency division main control chip 16-3 and a power amplifier module 16-4 which are connected in series in sequence, wherein, the power supply module 16-2 is connected with the power amplifier module 16-4 in parallel, the frequency division main control chip 16-3 is connected with the sound source 16-5, the power amplifier module 16-4 is connected with the low-frequency loudspeaker 9, and when the power switch 16-1 is turned on, the power switch 16-1 supplies power to the power module 16-2, the power module 16-2 supplies power to the frequency division main control chip 16-3 and the power amplifier module 16-4 respectively, the frequency division main control chip 16-3 performs frequency division after receiving the sound signal of the sound source 16-5, amplified by the power amplifier module 16-4 and then sent out a low-frequency alarm by the low-frequency loudspeaker 9.

During the use, the utility model discloses a 2 installing supports 3 of installation are connected with the automobile body with connecting bolt 15 on casing 4 down, installing support 3 is as shown in 4 ~ 6, is equipped with 3 connecting holes 3-1 that are connected with the automobile body on every installing support 3, and when being connected with the automobile body, 2 installing supports 3 are cyclic annular and press from both sides the fastening down casing 4 and fix, still is equipped with rectangular hole 3-2 and a plurality of round hole 3-3 on every installing support 3, both can alleviate the weight of installing support 3 and multiplicable installing support 3's elasticity again, still is equipped with 4 indentation form strengthening ribs 3-4 on installing support 3.

Claims

1. A vehicle-mounted low-frequency alarm comprises an upper shell (1) and a lower shell (4), it is characterized in that the upper shell (1) and the lower shell (4) are connected through a first self-tapping screw (11), a plurality of rhombic sound outlet holes (7) are arranged in front of the upper shell (1), a speaker mesh (8) is bonded on the inner wall of the upper shell (1) corresponding to the positions of the plurality of rhombic sound outlet holes (7), a horn support (10) is arranged on the inner wall of the lower shell (4), a low-frequency horn (9) is fixedly connected on the horn support (10) by a second tapping screw (12), a circuit board (16) is connected with the inner wall of the bottom surface of the lower shell (4) by a third tapping screw (13), the circuit board (16) is connected with a transformer (17) by a fourth self-tapping screw (14), and the circuit board (16) is provided with a wire holder (18).

2. The vehicle-mounted low-frequency alarm device according to claim 1, wherein the circuit board (16) comprises a power switch (16-1), a power module (16-2), a frequency division main control chip (16-3) and a power amplifier module (16-4) which are sequentially connected in series, wherein the power module (16-2) is connected with the power amplifier module (16-4) in parallel, the frequency division main control chip (16-3) is connected with the sound source (16-5), and the power amplifier module (16-4) is connected with the low-frequency loudspeaker (9).

3. A low frequency alarm according to claim 1 or 2, wherein a screw cover (2) is provided on the upper housing (1) at the location of the first tapping screw (11).

4. A low frequency alarm for vehicle carried in a vehicle as claimed in claim 1 or 2, wherein a radiator (6) is installed on the bottom surface of said lower case (4), and a pillar (5) is provided on the bottom surface of said lower case (4).

5. A vehicle-mounted low-frequency alarm according to claim 1 or 2, wherein 2 mounting brackets (3) are mounted on the lower housing (4), the mounting brackets (3) are provided with connecting holes (3-1), strip holes (3-2) and a plurality of round holes (3-3), and the mounting brackets (3) are further provided with indentation-shaped reinforcing ribs (3-4).