CN211654291U

CN211654291U - Explosion-proof vehicle and explosion-proof loudspeaker thereof

Info

Publication number: CN211654291U
Application number: CN202020200847.5U
Authority: CN
Inventors: 黄玉成; 肖凌; 贺鸿达; 李利; 曾昆雷
Original assignee: Hengyang Heli Industrial Vehicle Co Ltd
Current assignee: Hengyang Heli Industrial Vehicle Co Ltd
Priority date: 2020-02-24
Filing date: 2020-02-24
Publication date: 2020-10-09
Anticipated expiration: 2030-02-24

Abstract

The utility model discloses an explosion-proof loudspeaker, including loudspeaker body and the loudspeaker driving circuit board of this body coupling with loudspeaker, loudspeaker driving circuit board's positive pole and negative pole are connected with the anodal and negative pole of power respectively, loudspeaker driving circuit board's control end and negative pole are connected with the both ends of loudspeaker button respectively, loudspeaker body is including the casing that has the mounting hole, the coil assembly that the suit was settled in the mounting hole and was connected through cable and loudspeaker driving circuit board's link, the tuning screw rod that the suit was settled in the coil assembly and was located the lower part, install on the casing and be located the sound production diaphragm of tuning screw rod top, tuning screw rod and sound production diaphragm have the interval, after the interval has been adjusted, at the tuning screw rod, pour the sealant between coil assembly and the casing. The explosion-proof horn is small in size, exquisite in appearance, simple to manufacture and high in universality. The utility model also discloses an explosion-proof vehicle of including above-mentioned explosion-proof loudspeaker, its beneficial effect is the same with explosion-proof loudspeaker's beneficial effect.

Description

Explosion-proof vehicle and explosion-proof loudspeaker thereof

Technical Field

The utility model relates to an explosion-proof industrial vehicle electrical equipment field especially relates to an explosion-proof loudspeaker. Furthermore, the utility model discloses still relate to an explosion-proof vehicle including above-mentioned explosion-proof loudspeaker.

Background

When the explosion-proof industrial vehicle is produced and manufactured, all electrical parts (including the horn) need to be subjected to explosion-proof treatment according to relevant standards, and the horn is used as a necessary part on the vehicle; and the loudspeaker that explosion-proof vehicle of present market was equipped with is mostly gas horn (do not need explosion-proof processing, lean on the operator to extrude the gasbag sound production), has easily ageing, operates inconveniently, and many defects such as sound are little, and the most users in market have not accepted. A small number of explosion-proof vehicle electric horns in the market are mostly explosion-proof, have large volume, high manufacturing cost and short service life, and cannot well meet the requirements of various explosion-proof industrial vehicles.

In summary, how to effectively solve the problems of large volume, long production period, complex manufacturing, high cost and the like of the existing horn for the explosion-proof vehicle is a problem which needs to be solved urgently by technical personnel in the field at present.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an explosion-proof horn which has small volume, exquisite appearance, simple manufacture and strong universality; another object of the present invention is to provide an explosion-proof vehicle including the above-mentioned explosion-proof horn, which has the same advantages as the explosion-proof horn.

In order to solve the technical problem, the utility model provides a following technical scheme:

the utility model provides an explosion-proof loudspeaker, including loudspeaker body and with loudspeaker driving circuit board of loudspeaker body coupling, loudspeaker driving circuit board's positive pole and negative pole are connected with the positive pole and the negative pole of power respectively, loudspeaker driving circuit board's control end and negative pole are connected with the both ends of loudspeaker button respectively, loudspeaker body is including casing, the suit that has the mounting hole settle in the mounting hole and through the cable with coil assembly, the suit that loudspeaker driving circuit board's link is connected settle in coil assembly just be located the tuning screw rod of lower part, install in just be located on the casing the sound production diaphragm of tuning screw rod top, the tuning screw rod with the sound production diaphragm has the interval, after the interval has been adjusted the pouring sealant is pour between tuning screw rod, coil assembly and the casing.

Preferably, the housing is a magnetically permeable member.

Preferably, the housing is a carbon steel piece or a casting.

Preferably, the upper end of the casing is connected with a casing for packaging the sounding membrane, and the casing is provided with an opening.

Preferably, the joint of the sounding diaphragm and the shell is provided with a sealing gasket, and the sounding diaphragm and the shell are connected with the shell through a screw and an elastic gasket.

Preferably, the coil assembly comprises a framework and a coil body wound on the framework, a gap between the inner wall of the shell and the outer wall of the coil body is greater than or equal to 2mm and less than or equal to 10mm, and a gap between the outer wall of the coil body and the outer wall of the tuning screw rod is 1-3 mm.

Preferably, the horn driving circuit board is built in a housing of the horn body.

Preferably, the power supply is a direct current power supply or an alternating current power supply converted into a direct current by an inverter.

Preferably, a compression nut for fastening the tuning screw and the housing is connected to a lower end of the tuning screw.

The utility model also provides an explosion-proof vehicle, including the car body and install in the explosion-proof loudspeaker of car body, explosion-proof loudspeaker specifically is above-mentioned arbitrary explosion-proof loudspeaker.

The utility model provides an explosion-proof loudspeaker, including loudspeaker body, loudspeaker driving circuit board and this body coupling of loudspeaker, concrete loudspeaker driving circuit board's positive pole and negative pole are connected with the positive pole and the negative pole of power respectively, and the power provides the electric energy for loudspeaker driving circuit board and loudspeaker body. The control end and the negative pole of loudspeaker dirver circuit board are connected with the both ends of loudspeaker button respectively, and the negative pole that also is connected at control end and power is just so loudspeaker button, realizes the work of explosion-proof loudspeaker through the control end and the negative pole switch-on of loudspeaker dirver circuit board. The loudspeaker body includes casing, coil assembly, tuning screw rod and sound production diaphragm, and the middle part of casing has mounting hole and lead to the line hole, and coil assembly suit is installed in the mounting hole, and the cable passes through the end cap to be installed in the lead to the line downthehole, and two links that the cable was passed through to the both ends of coil assembly and loudspeaker drive circuit board are connected.

The tuning screw rod is sleeved in the coil assembly, the tuning screw rod is located on the lower portion of the coil assembly, and the tail end of the tuning screw rod extends out of the mounting hole. The sounding diaphragm is arranged on the shell and is positioned above the tuning screw rod. The interval has between the up end of tuning screw rod and the lower terminal surface of sounding diaphragm, and when the installation, the tuning screw rod can reciprocate to this spaced size between the up end that can adjust the tuning screw rod and the lower terminal surface of sounding diaphragm. And determining the size of the gap according to the actual conditions such as the magnitude of the power supply current, the vibration amplitude and the frequency of the loudspeaker body and the like. After the interval size is adjusted, pouring sealant is poured among the tuning screw rod, the coil assembly and the shell, the tuning screw rod, the coil assembly and the shell are poured into a whole, the explosion-proof loudspeaker is firm when vibrated at high frequency, parts are not prone to falling, and reliability is high. The explosion-proof horn is a disposable horn, is integrally cast and sealed, and is not required to be maintained during failure, and only needs to be integrally replaced. After the explosion-proof horn is connected with a power supply, a horn button is pressed, a horn driving circuit board is controlled by a chip and a related program, square wave voltage with certain frequency and duty ratio is output at two ends of a coil, the square wave voltage drives the coil to generate a changing magnetic field, a tuning screw and a sounding diaphragm are magnetized to form north and south poles, the sounding diaphragm is attracted by magnetic force to move downwards because the tuning screw is fixed, and when the magnetic field disappears, the sounding diaphragm moves upwards due to elasticity of the sounding diaphragm and restores to the original state; because the magnetic field is repeatedly generated, the sounding diaphragm moves up and down, and the gap between the tuning screw rod and the sounding diaphragm is adjusted simultaneously, so that the loudspeaker makes a sound.

By applying the technical scheme provided by the embodiment of the utility model, the volume is small, the weight is light, the structure is simple, and the appearance is exquisite; the manufacturing is simple, the reliability is high, the explosion-proof grade is high, the explosion-proof type horn is suitable for the II C grade gas-powder composite explosive environment, most of electric horns in the market are explosion-proof type, and the explosion-proof grade is II B grade; the device has the advantages of simple maintenance, strong universality, wide voltage coverage range and wide application range, and can be applied to explosion-proof vehicles such as electric vehicles, internal combustion vehicles and the like.

The utility model also provides an explosion-proof vehicle, include the car body and install in the explosion-proof loudspeaker of car body, this explosion-proof loudspeaker specifically is any kind of explosion-proof loudspeaker of the aforesaid. Because the above-mentioned explosion-proof horn has the above-mentioned technological effect, the explosion-proof vehicle that has this explosion-proof horn should also have corresponding technological effect.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of an explosion-proof speaker according to an embodiment of the present invention;

fig. 2 is a schematic structural view of the horn body in fig. 1.

The drawings are numbered as follows:

the loudspeaker comprises a shell, a loudspeaker body and a loudspeaker driving circuit board, and is characterized by comprising a compression nut 1, a tuning screw rod 2, a shell 3, a cable 4, a coil 5, a plug 6, a screw 7, a spring washer 8, a cover 9, a sounding membrane 10, a sealing gasket 11, a loudspeaker body 12 and a loudspeaker driving circuit board 13.

Detailed Description

The core of the utility model is to provide an explosion-proof horn, which has small volume, exquisite appearance, simple manufacture and strong universality; the utility model discloses an another core provides an explosion-proof vehicle including above-mentioned explosion-proof loudspeaker, and its beneficial effect is the same with explosion-proof loudspeaker's beneficial effect.

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1 and fig. 2, fig. 1 is a schematic structural diagram of an explosion-proof speaker according to an embodiment of the present invention; fig. 2 is a schematic structural view of the horn body in fig. 1.

In a specific embodiment, the utility model provides an explosion-proof loudspeaker, including loudspeaker body 12 and the loudspeaker drive circuit board 13 of being connected with loudspeaker body 12, loudspeaker drive circuit board 13's positive pole and negative pole are connected with the anodal and negative pole of power respectively, loudspeaker drive circuit board 13's control end and negative pole are connected with the both ends of loudspeaker button respectively, loudspeaker body 12 is including the casing 3 that has the mounting hole, the coil assembly 5 that the suit was installed in the mounting hole and was connected through cable 4 and loudspeaker drive circuit board 13's link, the tuning screw rod 2 that the suit was installed in coil assembly 5 and was located the lower part, install on casing 3 and be located the sounding diaphragm 10 of tuning screw rod 2 top, screw rod tuning 2 and sounding diaphragm 10 have the interval, after the interval has been adjusted, pour the sealant between tuning screw rod 2, coil assembly 5 and casing 3.

In the structure, the explosion-proof horn comprises a horn body 12 and a horn driving circuit board 13, the horn driving circuit board 13 is connected with the horn body 12, the anode and the cathode of the specific horn driving circuit board 13 are respectively connected with the anode and the cathode of a power supply, and the power supply provides electric energy for the horn driving circuit board 13 and the horn body 12.

The control end and the negative pole of loudspeaker dirver circuit board 13 are connected with the both ends of loudspeaker button respectively, and the negative pole that also is connected at control end and power is pressed to the loudspeaker, realizes explosion-proof loudspeaker's work through the control end and the negative pole switch-on of loudspeaker dirver circuit board 13.

Loudspeaker body 12 includes casing 3, coil assembly 5, tuning screw rod 2 and sound production diaphragm 10, and the middle part of casing 3 has mounting hole and lead to the line hole, and 5 suits of coil assembly are installed in the mounting hole, and cable 4 passes through end cap 6 to be installed in the lead to the line hole, and two links that cable 4 and loudspeaker drive circuit board 13 are passed through to coil assembly 5's both ends are connected.

And the tuning screw rod 2 is sleeved in the coil assembly 5, the tuning screw rod 2 is positioned at the lower part of the coil assembly 5, and the tail end of the tuning screw rod 2 extends out of the mounting hole. The sounding diaphragm 10 is mounted on the housing 3 and is located above the tuning screw 2. Have the interval between the up end of tuning screw 2 and the lower terminal surface of sounding diaphragm 10, when the installation, tuning screw 2 can reciprocate to this spaced size between the up end of tuning screw 2 and the lower terminal surface of sounding diaphragm 10 can be adjusted. The size of the gap is determined according to the actual conditions such as the magnitude of the power current, the vibration amplitude and the frequency of the horn body 12 and the like. After the interval size is adjusted, pour the casting sealant between tuning screw rod 2, coil assembly 5 and casing 3, pour tuning screw rod 2, coil assembly 5 and casing 3 as a whole, it is comparatively firm when high-frequency vibration that explosion-proof loudspeaker is, and the part is difficult for dropping, and the reliability is higher. The explosion-proof horn is a disposable horn, is integrally cast and sealed, and is not required to be maintained during failure, and only needs to be integrally replaced.

After the explosion-proof horn is connected with a power supply, a horn button is pressed, the horn driving circuit board 13 is controlled by a chip and a related program, square wave voltage with certain frequency and duty ratio is output at two ends of a coil, the square wave voltage drives the coil to generate a changing magnetic field, the tuning screw 2 and the sounding membrane 10 are magnetized to form north and south poles, the sounding membrane 10 is attracted by magnetic force to move downwards due to the fixation of the tuning screw 2, and when the magnetic field disappears, the sounding membrane 10 moves upwards and restores the original shape due to the elasticity of the sounding membrane; due to repeated generation of the magnetic field, the sounding diaphragm 10 moves up and down, and meanwhile, the gap between the tuning screw rod 2 and the sounding diaphragm 10 is adjusted, so that the loudspeaker makes a sound.

On the basis of the specific embodiment, the shell 3 is a magnetic conduction piece, has magnetic conduction capability and magnetic capability, enhances the magnetic effect while reducing the volume and lightening the mass, and improves the sound production quality. Specifically, the housing 3 may be a carbon steel member or a casting, which is low in cost.

In another more reliable embodiment, on the basis of any one of the above embodiments, the upper end of the casing 3 is connected with a cover 9, and the cover 9 encloses the sounding diaphragm 10 to protect the sounding diaphragm 10. The housing 9 is provided with an opening for transmitting sound easily.

Further optimize above-mentioned technical scheme, the junction of sounding diaphragm 10 and casing 3 is provided with sealed 11, improves the leakproofness between sounding diaphragm 10 and casing 3. The sounding diaphragm 10, the cover 9 and the shell 3 can be connected through the screw 7 and the elastic washer 8, so that the connection is easy, and the disassembly is convenient.

On the basis of the above specific embodiment, the coil assembly 5 includes a frame and a coil body wound on the frame, and the size of the gap between the inner wall of the housing 3 and the outer wall of the coil body is moderate, so that when the gap is too small, the heat dissipation is difficult; when too big, overall structure is great, preferably, and the clearance more than or equal to 2mm and less than or equal to 10mm between the outer wall of the inner wall of casing 3 and the coil body, the tuning screw 2 and the magnetization performance of sounding diaphragm 10 are better this moment, and overall structure is compact, easily dispels the heat.

The clearance between the outer wall of coil body and the outer wall of tuning screw 2 is arbitrary value between 1-3mm, including endpoint value, preferably, the inner wall of skeleton and the outer wall of tuning screw 2 are laminated mutually, further improve the magnetizability of tuning screw 2 and sounding diaphragm 10.

The utility model provides an explosion-proof loudspeaker, under the unchangeable condition of other parts, place in loudspeaker drive circuit board 13 can place the casing 3 of loudspeaker body 12 in, compact structure, occupation space is less.

Loudspeaker drive circuit board 13 can also be arranged in loudspeaker body 12's the casing 3 outside outward, and loudspeaker drive board and sound generating module set up independently, and the fault rate is lower, and is reliable and stable, overhauls and maintains the convenience.

For the explosion-proof horn in each embodiment, the power supply can be a direct-current power supply, and the structure is simple; the power supply can also be an alternating current power supply, and is converted into direct current through the inverter, so that the use is more convenient.

The utility model provides an explosion-proof loudspeaker should not be restricted to this kind of situation, and under the unchangeable condition of other parts, the lower extreme of tuning screw rod 2 is connected with gland nut 1, and casing 3 is stretched out to the end of tuning screw rod 2, and gland nut 1 is fastened for the end of tuning screw rod 2, fastens tuning screw rod 2 and casing 3. Before pouring, the position of the tuning screw rod 2 can be adjusted by rotating the compression nut 1, so that the gap between the upper end face of the tuning screw rod 2 and the lower end face of the sounding diaphragm 10 is adjusted, and the adjustment is convenient.

Based on the explosion-proof loudspeaker that provides in the above-mentioned embodiment, the utility model also provides an explosion-proof vehicle, this explosion-proof vehicle include the car body and install in the explosion-proof loudspeaker of car body, wherein explosion-proof loudspeaker is any one kind explosion-proof loudspeaker in the above-mentioned embodiment. Since the explosion-proof vehicle adopts the explosion-proof horn in the above embodiment, please refer to the above embodiment for the beneficial effects of the explosion-proof vehicle. For the structure of other parts of the explosion-proof vehicle, please refer to the prior art, and the description is omitted herein.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

It is right above the utility model provides an explosion-proof vehicle and explosion-proof loudspeaker thereof have carried out detailed introduction. The principles and embodiments of the present invention have been explained herein using specific examples, and the above descriptions of the embodiments are only used to help understand the method and its core ideas of the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. The anti-explosion loudspeaker is characterized by comprising a loudspeaker body (12) and a loudspeaker driving circuit board (13) connected with the loudspeaker body (12), wherein the anode and the cathode of the loudspeaker driving circuit board (13) are respectively connected with the anode and the cathode of a power supply, the control end and the cathode of the loudspeaker driving circuit board (13) are respectively connected with the two ends of a loudspeaker button, the loudspeaker body (12) comprises a shell (3) with a mounting hole, a coil assembly (5) and a sounding diaphragm (10) which are arranged in the mounting hole and connected with the connecting end of the loudspeaker driving circuit board (13) through a cable (4) and are respectively connected with the two ends of the loudspeaker button, the loudspeaker body (12) comprises a tuning screw (2) which is arranged in the coil assembly (5) and is positioned at the lower part, and the sounding diaphragm (10) which is arranged on the shell (3) and is positioned above the tuning screw (2), and the tuning screw (2) and the sounding diaphragm (, and pouring a pouring sealant among the tuning screw rod (2), the coil assembly (5) and the shell (3) after the interval is adjusted.

2. Explosion-proof horn according to claim 1, characterized in that the housing (3) is a magnetically conductive piece.

3. An explosion-proof horn as claimed in claim 2, characterised in that the housing (3) is a carbon steel piece or a casting.

4. The explosion-proof horn as claimed in claim 1, wherein the upper end of the housing (3) is connected with a cover (9) for enclosing the sounding membrane (10), and the cover (9) is provided with an opening.

5. The explosion-proof horn of claim 4, characterized in that the joint of the sounding membrane (10) and the shell (3) is provided with a sealing gasket (11), and the sounding membrane (10) and the cover (9) are connected with the shell (3) through a screw (7) and an elastic gasket (8).

6. The explosion-proof horn of claim 1, wherein the coil assembly (5) comprises a framework and a coil body wound on the framework, a gap between the inner wall of the housing (3) and the outer wall of the coil body is greater than or equal to 2mm and less than or equal to 10mm, and a gap between the outer wall of the coil body and the outer wall of the tuning screw (2) is 1-3 mm.

7. Explosion-proof horn according to claim 1, characterized in that the horn actuation circuit board (13) is built into the housing (3) of the horn body (12).

8. The explosion-proof horn as claimed in claim 1, wherein the power source is a direct current power source or an alternating current power source converted into a direct current by an inverter.

9. The explosion-proof horn as claimed in claim 1, characterized in that a compression nut (1) for fastening the tuning screw (2) and the housing (3) is connected to the lower end of the tuning screw (2).

10. An explosion-proof vehicle, comprising a vehicle body and an explosion-proof horn mounted on the vehicle body, characterized in that the explosion-proof horn is specifically the explosion-proof horn of any one of claims 1 to 9.