KR102407589B1 - Fire prevention speaker assembly including ceramic vibrating body - Google Patents

Abstract

Disclosed is a speaker assembly for fire prevention including a ceramic vibrating body capable of continuously and stably transmitting sound in emergency situations such as fire.
A fire disaster prevention speaker assembly including a ceramic vibrating body includes an exciter unit configured to generate vibration when an electric current is applied, and a vibrating plate in contact with the exciter unit and vibrating by the exciter unit to emit sound, is made of a ceramic material.

Description

Fire prevention speaker assembly including ceramic vibrating body

The present invention relates to a speaker assembly for fire prevention including a ceramic vibrating body.

In general, on each floor and household of a building, such as a building or apartment, a speaker is installed to notify residents to evacuate by sounding an alarm in the event of a fire or disaster, or to deliver a guidance broadcast.

However, since the above-mentioned conventional speaker uses animal and plant pulp fiber moldings, woven fabrics, films, etc., which are weak to heat due to the speaker structure, there is a problem in that it is easily damaged by high heat and flames when disasters such as fire occur.

Accordingly, in the event of a disaster, the broadcast could not be transmitted, or the broadcast could not be clearly transmitted, causing confusion to people evacuating in the building, which caused a major accident.

Registered Patent Publication No. 10-1032895

The present invention has been devised to solve the above problems, and an object of the present invention is to provide a speaker assembly for fire disaster prevention including a ceramic vibrating body capable of continuously and stably transmitting sound in emergency situations such as fire.

The problems of the present invention are not limited to the problems mentioned above, and other problems not mentioned will be clearly understood by those skilled in the art from the following description.

In accordance with an embodiment of the present invention for solving the above problems, a speaker assembly for fire prevention including a ceramic vibrating body includes an exciter unit configured to generate vibration when a current is applied; and a diaphragm in contact with the exciter unit and emitting sound while vibrating by the exciter unit, wherein the diaphragm is made of a ceramic material.

Signal transfer fastening assemblies configured to bring the exciter unit into close contact with the outer surface of the diaphragm, and transmit a signal amplified by the exciter unit to the inside of the diaphragm, wherein the signal transfer fastening assemblies include: a nut portion disposed inside the diaphragm; and a bolt part that penetrates the exciter unit and is fastened and accommodated in the nut part, and the other part presses the exciter unit toward the nut part to bring the exciter unit into close contact with the outer surface of the diaphragm. and an excitation part made of a metallic material and the exciter unit is in close contact with the outer surface of the diaphragm and configured to transmit vibration to the diaphragm; and flange portions disposed around the vibrating portion to be pressed and supported by the signal transfer fastening assemblies.

magnetic bodies disposed between the flange parts and the diaphragm to contact the signal transmission fastening assemblies and to interact magnetically to form a magnetic field; and a metal mesh disposed inside the diaphragm, connected to the nut portion, and amplifying vibrations generated from the diaphragm.

The diaphragm may emit a sound having a frequency band of 40 Hz or more and 15 kHz or less, and the metal mesh may amplify a sound of a frequency band of 800 Hz or more and 4 kHz or less.

an auxiliary vibration assembly connected to the vibration plate and configured to emit sound; auxiliary signal transmission fastening assemblies configured to bring the auxiliary vibration assembly into close contact with the diaphragm and transmit a signal amplified by the metal mesh to the inside of the auxiliary vibration assembly; an auxiliary fastening unit coupled to outer peripheral surfaces of the vibration plate and the auxiliary vibration assembly to fix the vibration plate and the auxiliary vibration assembly; a protective cover installed on the diaphragm and accommodating the exciter unit therein to protect the exciter unit from the outside; a vibration damping unit coupled to the protective cover and configured to damp vibration transmitted through the protective cover; and a height adjustment unit configured to elevate the vibration damping unit, wherein the auxiliary vibration assembly includes: an auxiliary vibration plate made of a ceramic material that is in contact with the vibration plate and is vibrated by the vibration plate to emit sound; an auxiliary metal mesh disposed inside the auxiliary diaphragm, amplifying vibrations generated from the auxiliary diaphragm, and having a mesh size different from that of the metal mesh; and a metal plate disposed between the diaphragm and the auxiliary diaphragm to amplify vibrations generated from the diaphragm and the auxiliary diaphragm, wherein the auxiliary signal transfer fastening assemblies are accommodated in the diaphragm and connected to the metal mesh first nut members of material; second nut members of a metallic material accommodated in the auxiliary diaphragm and connected to the auxiliary metal mesh; auxiliary magnetic materials coupled to the metal plate, a portion in contact with the first nut members, and another portion in contact with the second nut members, and magnetically interacting with each other to form a magnetic field; and a part presses the protective cover supported on the diaphragm to bring the protective cover into close contact with the diaphragm, and another part includes the protective cover, the diaphragm, the metal mesh, the first nut members, the auxiliary magnetic bodies, and bolt members passing through the second nut members and fastened to the first nut members and the second nut members, wherein the auxiliary fastening unit includes a ring supporting the diaphragm and outer surfaces of the auxiliary diaphragm body; first engaging members rotatably coupled to a portion of the ring body and supported by first engaging grooves formed in the diaphragm; second locking members rotatably coupled to another part of the ring body and supported by second locking grooves formed in the auxiliary diaphragm; first stationary magnets accommodated in the diaphragm; first rotating magnets accommodated in the first locking members and coupled to the first stationary magnets when the first locking members are coupled to the first locking grooves; second stationary magnets accommodated in the auxiliary diaphragm; and second rotation magnets accommodated in the second locking members and coupled to the second stationary magnets when the second locking members are coupled to the second locking grooves. a cover body accommodating the exciter unit therein; and a cover flange disposed around the cover body and supported on the outer surface of the diaphragm by being pressed by the bolt members, wherein the vibration damping unit includes a first anti-vibration washer made of an elastic material disposed on the cover body. field; a first support plate supported by the first anti-vibration washers; a second support plate disposed opposite to the first support plate; buffer springs disposed between the first support plate and the second support plate to elastically support the first support plate and the second support plate; A portion is in contact with the first support plate to press the first support plate toward the first anti-vibration washers, and the other part is configured to pass through the first support plate, the buffer springs, the second support plate, and the first anti-vibration washers. vibration damping bolts; vibration damping nuts fastened to the vibration damping bolts and configured to press the second support plate toward the first support plate; second anti-vibration washers of an elastic material disposed between the first support plate and the second support plate to elastically support the first support plate and the second support plate; and hydraulic cylinders disposed outside the first support plate and the second support plate to connect and support the first support plate and the second support plate, wherein the height adjustment unit is a support unit disposed on an installation object field; a screw shaft rotatably coupled to the support units; a drive motor configured to rotate the screw shaft; a fixing nut coupled to the screw shaft and fixedly disposed on a portion of the screw shaft; a moving nut coupled to the screw shaft and disposed on another part of the screw shaft, the moving nut being moved along an outer surface of the screw shaft when the screw shaft is rotated; a first support bracket disposed on a portion of the first support plate; a second support bracket disposed on another portion of the first support plate and having a guide slot having a length corresponding to the distance through which the movable nut is moved; and a first bar rotatably coupled to the fixing nut, the other part being rotatably coupled to the second support bracket and movably disposed along the guide slot, and a part rotatably coupled to the movable nut A second bar coupled to the second bar, and the other portion being rotatably coupled to the first support bracket, and a hinge penetrating the center of the first bar and the second bar to rotatably support the first bar and the second bar. and a scissor member, wherein when the movable nut is moved closer to the fixing nut, the scissor member lowers the vibration damping unit, and when the movable nut is moved away from the fixing nut, the scissor member is The vibration damping unit may be raised.

According to an embodiment of the present invention, since the diaphragm is formed of a ceramic material having heat resistance and fire resistance, sound can be transmitted for a long time even when a fire occurs, thereby reducing the probability of an accident.

In addition, since magnetic materials are disposed between the diaphragm and the exciter unit, and metal fastening assemblies are disposed between the magnetic materials and the metal mesh, a wide magnetic field is formed in front of the speaker assembly, and the transmission efficiency of sound transmitted through this is improved. can be improved

In addition, since the diaphragm is made of a ceramic material with a higher density than wood or glass, and a metal mesh is placed inside the diaphragm, the sound of a specific frequency band is supplemented, and the sound transmission performance of the high frequency band is improved and transmitted through this The resolution of the sound may be improved.

In addition, as the metal mesh disposed inside the diaphragm supports the diaphragm, when the diaphragm is damaged, the pieces of the diaphragm are supported by the metal mesh without scattering or falling to the surroundings, thereby preventing an accident.

In addition, since the exciter unit and the diaphragm are fastened through fastening assemblies having a screw-type fastening structure, the fastening force is strengthened to prevent mutual separation and separation, and through this, the fastening state is maintained even if accidents such as fire or earthquake occur. It can continuously transmit sound.

The effect according to the present invention is not limited by the contents exemplified above, and more various effects are included in the present invention.

1 is a schematic front view of a speaker assembly for fire prevention according to an embodiment of the present invention.
2 is a schematic front view of a speaker assembly for fire prevention according to another embodiment of the present invention.
3 is a schematic front view of an auxiliary vibration assembly according to another embodiment of the present invention.
4 is a schematic front view of auxiliary signal transmission fastening assemblies according to another embodiment of the present invention.
5 is a schematic front view of an auxiliary fastening unit according to another embodiment of the present invention.
6 is a schematic front view of a protective cover according to another embodiment of the present invention.
7 is a schematic front view of a vibration damping unit according to another embodiment of the present invention.
8 is a front view schematically showing a height adjustment unit according to another embodiment of the present invention.

Hereinafter, embodiments will be described in detail with reference to the accompanying drawings. However, since various changes may be made to the embodiments, the scope of the patent application is not limited or limited by these embodiments. It should be understood that all modifications, equivalents and substitutes for the embodiments are included in the scope of the rights.

Specific structural or functional descriptions of the embodiments are disclosed for purposes of illustration only, and may be changed and implemented in various forms. Accordingly, the embodiments are not limited to the specific disclosure form, and the scope of the present specification includes changes, equivalents, or substitutes included in the technical spirit.

Although terms such as first or second may be used to describe various elements, these terms should be interpreted only for the purpose of distinguishing one element from another. For example, a first component may be termed a second component, and similarly, a second component may also be termed a first component.

When a component is referred to as being “connected to” another component, it may be directly connected or connected to the other component, but it should be understood that another component may exist in between.

The terms used in the examples are used for the purpose of description only, and should not be construed as limiting. The singular expression includes the plural expression unless the context clearly dictates otherwise. In this specification, terms such as "comprise" or "have" are intended to designate that a feature, number, step, operation, component, part, or a combination thereof described in the specification exists, but one or more other features It should be understood that this does not preclude the existence or addition of numbers, steps, operations, components, parts, or combinations thereof.

Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which the embodiment belongs. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related art, and should not be interpreted in an ideal or excessively formal meaning unless explicitly defined in the present application. does not

In addition, in the description with reference to the accompanying drawings, the same components are given the same reference numerals regardless of the reference numerals, and the overlapping description thereof will be omitted. In describing the embodiment, if it is determined that a detailed description of a related known technology may unnecessarily obscure the gist of the embodiment, the detailed description thereof will be omitted.

Advantages and features of the present invention and methods of achieving them will become apparent with reference to the embodiments described below in detail in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but will be implemented in a variety of different forms, and only these embodiments allow the disclosure of the present invention to be complete, and common knowledge in the technical field to which the present invention belongs It is provided to fully inform the possessor of the scope of the invention, and the present invention is only defined by the scope of the claims.

In the embodiments of the present invention, unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs. have meaning Terms such as those defined in a commonly used dictionary should be interpreted as having a meaning consistent with the meaning in the context of the related art, and unless explicitly defined in an embodiment of the present invention, an ideal or excessively formal meaning is not interpreted as

The shapes, sizes, proportions, angles, numbers, etc. disclosed in the drawings for explaining the embodiments of the present invention are illustrative and the present invention is not limited to the illustrated matters. In addition, in describing the present invention, if it is determined that a detailed description of a related known technology may unnecessarily obscure the gist of the present invention, the detailed description thereof will be omitted. When 'including', 'having', 'consisting', etc. mentioned in this specification are used, other parts may be added unless 'only' is used. When a component is expressed in the singular, cases including the plural are included unless otherwise explicitly stated.

In interpreting the components, it is construed as including an error range even if there is no separate explicit description.

In the case of a description of the positional relationship, for example, when the positional relationship of two parts is described as 'on', 'on', 'on', 'beside', etc., 'right' Alternatively, one or more other parts may be positioned between two parts unless 'directly' is used.

Reference to an element or layer “on” another element or layer includes any intervening layer or other element directly on or in the middle of another element. Like reference numerals refer to like elements throughout.

The size and thickness of each component shown in the drawings are illustrated for convenience of description, and the present invention is not necessarily limited to the size and thickness of the illustrated component.

Each feature of the various embodiments of the present invention may be partially or wholly combined or combined with each other, and as those skilled in the art will fully understand, technically various interlocking and driving are possible, and each embodiment may be implemented independently of each other, It may be possible to implement together in a related relationship.

1 is a schematic front view of a speaker assembly for fire prevention according to an embodiment of the present invention.

Referring to FIG. 1 , the speaker assembly 1 for fire prevention (hereinafter referred to as 'speaker assembly for fire prevention (1)') including a ceramic vibrating body according to an embodiment of the present invention is directly attached to the ceiling or wall of a building. It is installed or is installed on a separate structure object (S) such as a frame structure and is configured to emit a sound.

The present fire and disaster prevention speaker assembly 1 includes an exciter unit 1A, a diaphragm 1B, and signal transmission fastening assemblies 1C.

The exciter unit 1A is configured to generate vibration when an electric current is applied.

The exciter unit 1A may include an excitation part A1 and flange parts A2.

The excitation unit A1 is in close contact with the outer surface of the diaphragm 1B, and when a current is applied, it generates vertical vibration to amplify the signal input from the amplifier (not shown), and transmits the vibration to the diaphragm 1B to the amplified signal is configured to output to the outside.

For example, the excitation unit A1 may be implemented as an exciter unit applied to a conventional exciter speaker.

The flange portions A2 may be disposed on the periphery of the vibrating portion A1 , and may be fixedly disposed on the diaphragm 1B by being pressed and supported by the signal transmission fastening assemblies 1C.

The diaphragm 1B is in contact with the exciter unit 1A, and emits sound while being vibrated by the exciter unit 1A.

At this time, the diaphragm 1B is formed of a ceramic material having excellent heat resistance and fire resistance performance.

For example, the diaphragm 1B made of a ceramic material may maintain its shape without melting or burning even at a high temperature of 800 degrees or more. Accordingly, it is possible to safely protect the exciter unit 1A from fire in case of fire. In addition, the diaphragm 1B may be manufactured to have the same size as a textile or a gypsum board, which is a finishing material for an indoor ceiling of a building, and thus may be easily installed.

The signal transmission fastening assemblies 1C may be configured to bring the exciter unit 1A into close contact with the outer surface of the diaphragm 1B and transmit the signal amplified by the exciter unit 1A to the inside of the diaphragm 1B. .

Specifically, the signal transmission fastening assemblies 1C include a nut portion C1 disposed inside the diaphragm 1B, and a portion penetrates the exciter unit 1A and is fastened to and accommodated in the nut portion C1. , the other part may include a bolt portion C2 for pressing the exciter unit 1A toward the nut portion C1 to bring the exciter unit 1A into close contact with the outer surface of the diaphragm 1B.

Here, the nut part C1 and the bolt part C2 may be made of a metallic material.

The present fire and disaster prevention speaker assembly 1 may further include magnetic materials 1D and a metal mesh 1E.

The magnetic bodies 1D may be disposed between the flange portions A2 and the diaphragm 1B to contact the signal transmission fastening assemblies 1C made of a metallic material. In addition, the magnetic materials 1D may interact magnetically to form a magnetic field.

The metal mesh 1E may be disposed inside the diaphragm 1B and connected to the nut portion C1.

For example, the metal mesh 1E and the nut portion C1 may be connected to each other through welding or may be connected to each other through a separate coupling structure.

The metal mesh 1E may amplify the vibration generated by the diaphragm 1B.

For example, the diaphragm 1B in which the metal mesh 1E is disposed emits a sound having a frequency band of 40 Hz or more and 15 kHz or less, and the metal mesh 1E disposed inside the diaphragm 1B is 800 Hz or more. It can amplify the sound in the frequency band below 4kHz.

2 is a schematic front view of a speaker assembly for fire prevention according to another embodiment of the present invention.

Referring to FIG. 2 , the present fire and disaster speaker assembly 1 includes an auxiliary vibration assembly 1F, auxiliary signal transmission fastening assemblies 1G, auxiliary fastening unit 1H, a protective cover 1I, and a vibration damping unit ( 1J) and may further include a height adjustment unit (1K).

The auxiliary vibration assembly 1F may be connected to the vibration plate 1B and configured to amplify and emit sound.

3 is a schematic front view of an auxiliary vibration assembly according to another embodiment of the present invention.

2 and 3 , the auxiliary vibration assembly 1F may include an auxiliary vibration plate F1 , an auxiliary metal mesh F2 , and a metal plate F3 .

The auxiliary diaphragm F1 may be formed of a ceramic material to be in contact with the diaphragm 1B, and may emit sound while being vibrated by the diaphragm 1B.

The auxiliary metal mesh F2 is disposed inside the auxiliary diaphragm F1, amplifies vibrations generated from the auxiliary diaphragm F1, and may have a mesh size different from that of the metal mesh 1E.

The metal plate F3 may be disposed between the diaphragm 1B and the auxiliary diaphragm F1 to amplify vibrations generated from the diaphragm 1B and the auxiliary diaphragm F1.

Referring to FIG. 2 , the auxiliary signal transfer fastening assemblies 1G attach the auxiliary vibration assembly 1F to the diaphragm 1B, and apply the signal amplified from the metal mesh 1E to the inside of the auxiliary vibration assembly 1F. can be configured to deliver.

4 is a schematic front view of auxiliary signal transmission fastening assemblies according to another embodiment of the present invention.

2 and 4 , the auxiliary signal transmission fastening assemblies 1G include first nut members G1 , second nut members G2 , auxiliary magnetic materials G3 and bolt members G4 . ) may be included.

The first nut members G1 may be made of a metallic material and may be accommodated in the diaphragm 1B and connected to the metal mesh 1E.

The second nut members G2 may be made of a metallic material and may be accommodated in the auxiliary diaphragm F1 and connected to the auxiliary metal mesh F2.

For example, the first nut members G1 and the metal mesh 1E may be connected to each other through welding or may be connected to each other through a separate coupling structure. In addition, the second nut members G2 and the auxiliary metal mesh F2 may be connected to each other through welding or may be connected to each other through a separate coupling structure.

The auxiliary magnetic materials G3 may be coupled to the metal plate F3 so that a portion may contact the first nut members G1 , and other portions may contact the second nut members G2 . In addition, the auxiliary magnetic materials G3 may magnetically interact to form a magnetic field.

A portion of the bolt members G4 presses the protective cover 1I supported on the diaphragm 1B to bring the protective cover 1I into close contact with the diaphragm 1B, and another portion of the bolt members G4 presses the protective cover 1I to the diaphragm 1B. 1I, the diaphragm 1B, the metal mesh 1E, the first nut members G1, the auxiliary magnetic bodies G3, and the second nut members G2 through the first nut members G1 and the second nut members G2.

Referring to FIG. 2 , the auxiliary fastening unit 1H may be coupled to the outer peripheral surfaces of the vibration plate 1B and the auxiliary vibration assembly 1F to fix the vibration plate 1B and the auxiliary vibration assembly 1F.

5 is a schematic front view of an auxiliary fastening unit according to another embodiment of the present invention.

2 and 5 , the auxiliary fastening unit 1H is rotatably coupled to the diaphragm 1B and the ring body H1 supporting the outer surfaces of the auxiliary diaphragm F1, and a portion of the ring body H1. The first engaging members H2 and the first engaging members H2 caught and supported by the first engaging grooves B1 formed in the diaphragm 1B, and rotatably coupled to another portion of the ring body H1 and formed in the auxiliary diaphragm F1 It may include second locking members (H3) supported by the second locking grooves (F11).

In addition, the auxiliary fastening unit 1H is accommodated in the first stationary magnets H4 accommodated in the diaphragm 1B, the first engaging members H2, and the first engaging members H2 are first engaging When coupled to the grooves B1, the first rotating magnets H5 coupled to the first stationary magnets H4 may be included.

In addition, the auxiliary fastening unit 1H is accommodated in the second fixed magnets H6 and the second locking members H3 accommodated in the auxiliary diaphragm F1, and the second locking members H3 are the second When coupled to the locking grooves F11, the second rotating magnets H7 coupled to the second stationary magnets H6 may be included.

Referring to FIG. 2 , the protective cover 1I may be installed on the diaphragm 1B and accommodate the exciter unit 1A therein to protect the exciter unit 1A from the outside.

6 is a schematic front view of a protective cover according to another embodiment of the present invention.

2 and 6 , the protective cover 1I is disposed around the cover body I1 for accommodating the exciter unit 1A therein, and the cover body I1, and includes bolt members G4. ) may include a cover flange (I2) that is pressed and supported on the outer surface of the diaphragm (1B).

Referring to FIG. 2 , the vibration damping unit 1J may be coupled to the protective cover 11 and configured to damp vibration transmitted through the protective cover 11 .

7 is a schematic front view of a vibration damping unit according to another embodiment of the present invention.

Referring to FIGS. 2 and 7 , the vibration damping unit 1J includes first anti-vibration washers J1 made of an elastic material disposed on the cover body I1, and a first anti-vibration washer J1 supported on the first anti-vibration washers J1. It may include a first support plate (J2) and a second support plate (J3) disposed to face the first support plate (J2).

In addition, the vibration damping unit (1J) is disposed between the first support plate (J2) and the second support plate (J3) to elastically support the first support plate (J2) and the second support plate (J3) buffer springs ( J4) and a portion is in contact with the first support plate (J2) and presses the first support plate (J2) toward the first anti-vibration washers (J1), and the other portion is a first support plate (J2), buffer springs (J4), It may include vibration damping bolts J5 configured to pass through the second support plate J3 and the first anti-vibration washers J1.

In addition, the vibration damping unit 1J is fastened to the vibration damping bolts J5 and configured to press the second support plate J3 toward the first support plate J2 side, and the vibration damping nuts J6 and the first support plate It may include second anti-vibration washers J7 of an elastic material disposed between (J2) and the second support plate (J3) to elastically support the first support plate (J2) and the second support plate (J3).

In addition, the vibration damping unit (1J) is disposed on the outside of the first support plate (J2) and the second support plate (J3) to connect and support the first support plate (J2) and the second support plate (J3) hydraulic cylinders ( J8) may be included.

Referring to FIG. 2 , the height adjustment unit 1K may be configured to elevate the vibration damping unit 1J.

8 is a front view schematically showing a height adjustment unit according to another embodiment of the present invention.

2 and 8, the height adjustment unit (1K), the support units (K1) disposed on the installation object (S), and a screw shaft (K2) rotatably coupled to the support units (K1) and a drive motor K3 configured to rotate the screw shaft K2.

In addition, the height adjustment unit (1K) is coupled to the screw shaft (K2) and a fixing nut (K4) fixedly arranged on a part of the screw shaft (K2), is coupled to the screw shaft (K2) of the screw shaft (K2) It may include a moving nut (K5) disposed on another part and moved along the outer surface of the screw shaft (K2) when the screw shaft (K2) rotates.

In addition, the height adjustment unit (1K), the first support bracket (K6) disposed on a part of the first support plate (J2), and the first support plate (J2) disposed on the other part, the moving nut (K5) therein It may include a second support bracket (K7) in which a guide slot (K71) having a length corresponding to the moving distance is formed.

In addition, the height adjustment unit 1K lowers the vibration damping unit 1J when the moving nut K5 is moved to be closer to the fixing nut K4, and the moving nut K5 is moving away from the fixing nut K4. When moved, it may include a scissor member (K8) for raising the vibration damping unit (1J).

The scissor member K8 may include a first bar K81 , a second bar K82 , and a hinge K83 .

A part of the first bar K81 may be rotatably coupled to the fixing nut K4, and the other part may be rotatably coupled to the second support bracket K7 so as to be movably disposed along the guide slot K71. have.

A part of the second bar K82 may be rotatably coupled to the moving nut K5 , and the other part may be rotatably coupled to the first support bracket K6 .

The hinge K83 may penetrate the centers of the first bar K81 and the second bar K82 to rotatably support the first bar K81 and the second bar K82.

As described above, according to the embodiment of the present invention, since the diaphragm 1B is made of a ceramic material having heat resistance and fire resistance, sound can be transmitted for a long time even when a fire occurs, thereby reducing the probability of an accident.

In addition, magnetic bodies 1D are disposed between the diaphragm 1B and the exciter unit 1A, and signal transmission fastening assemblies 1C made of a metal are disposed between the magnetic bodies 1D and the metal mesh 1E. Therefore, a wide magnetic field is formed in front of the speaker assembly 1, and thus, the transmission efficiency of sound transmitted through this can be improved.

In addition, since the diaphragm 1B is made of a ceramic material having a higher density than wood or glass, and the metal mesh 1E is disposed inside the diaphragm 1B, the sound of a specific frequency band is supplemented as well as the sound of the high frequency range. The transmission performance may be improved, and thus the resolution of the transmitted sound may be improved.

In addition, as the metal mesh 1E disposed inside the diaphragm 1B supports the diaphragm 1B, when the diaphragm 1B is damaged, the pieces of the diaphragm 1B are not scattered around or fall. It is supported by (1E) to prevent accidents.

In addition, since the exciter unit 1A and the diaphragm 1B are fastened through the signal transmission fastening assemblies 1C having a screw-type fastening structure, the fastening force is strengthened to prevent mutual separation and separation, and through this, fire or Even if an accident such as an earthquake occurs, the connection state is maintained and sound can be continuously transmitted.

Although the embodiments of the present invention have been described in more detail with reference to the accompanying drawings, the present invention is not necessarily limited to these embodiments, and various modifications may be made within the scope without departing from the technical spirit of the present invention. . Accordingly, the embodiments disclosed in the present invention are not intended to limit the technical spirit of the present invention, but to explain, and the scope of the technical spirit of the present invention is not limited by these embodiments. Therefore, it should be understood that the embodiments described above are illustrative in all respects and not restrictive. The protection scope of the present invention should be construed by the following claims, and all technical ideas within the scope equivalent thereto should be construed as being included in the scope of the present invention.

Therefore, other implementations, other embodiments, and equivalents to the claims are also within the scope of the following claims.

1. Speaker assembly for fire prevention
1A. Exciter unit
A1. wealthy
A2. flange parts
1B. tympanum
B1. first locking grooves
1C. Signaling Fastening Assemblies
C1. nut part
C2. bolt part
1D. magnetic substances
1E. metal mesh
1F. Auxiliary vibration assembly
F1. auxiliary diaphragm
F11. second locking grooves
F2. auxiliary metal mesh
F3. plate
1G. Auxiliary Signaling Fastening Assemblies
G1. first nut members
G2. second nut members
G3. auxiliary magnets
G4. bolt members
1H. auxiliary fastening unit
H1. ring body
H2. first locking members
H3. second locking members
H4. first stator magnets
H5. first rotating magnets
H6. second fixed magnets
H7. second rotating magnets
1I. protective cover
I1. cover body
I2. cover flange
1J. vibration damping unit
J1. 1st dust-proof washers
J2. first support plate
J3. second support plate
J4. buffer springs
J5. vibration damping bolts
J6. vibration damping nuts
J7. 2nd dust-proof washers
J8. hydraulic cylinders
1K. height adjustment unit
K1. support units
K2. screw shaft
K3. drive motor
K4. fixing nut
K5. moving nut
K6. first support bracket
K7. 2nd support bracket
K71. guide slot
K8. scissor member
K81. first bar
K82. 2nd bar
K83. hinge
S. Installation object

Claims (3)

an exciter unit configured to generate vibration when an electric current is applied; and
a diaphragm in contact with the exciter unit and vibrating by the exciter unit to emit sound;
The diaphragm is formed of a ceramic material,
Signal transmission fastening assemblies configured to bring the exciter unit into close contact with the outer surface of the diaphragm and transmit a signal amplified by the exciter unit to the inside of the diaphragm;
The signaling fastening assemblies include:
a nut portion disposed inside the diaphragm; and
A part penetrates the exciter unit and is fastened to and accommodated in the nut part, and the other part is a bolt part for pressing the exciter unit toward the nut part to bring the exciter unit into close contact with the outer surface of the diaphragm; and ,
The nut part and the bolt part are made of a metallic material,
The exciter unit is
a vibrating part closely attached to the outer surface of the diaphragm and configured to transmit vibration to the diaphragm; and
It includes a; flange portions disposed on the periphery of the excitation portion to be pressed and supported by the signal transmission fastening assemblies;
magnetic materials disposed between the flange portions and the diaphragm to contact the signal transmission fastening assemblies, and magnetically interact to form a magnetic field; and
and a metal mesh disposed inside the diaphragm, connected to the nut unit, and amplifying vibrations generated from the diaphragm. delete delete

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