KR20120014293A - Speaker apparatus for cabin of railway vehicle - Google Patents

Abstract

PURPOSE: A speaker apparatus for a cabin of a railway vehicle is provided to cleanly transmit an acoustic signal without an echo phenomenon to a passenger room by placing wide one end of a frame at a speaker unit in the outside of a wall surface of the passenger room. CONSTITUTION: A speaker unit(100) is formed into a cone shape. The speaker unit includes a frame having a flange formed in wide one end and an acoustic part which changes an electric signal into an acoustic signal. One side of a shield case(200) is formed into an opened cover shape. The other side of the shield case is arranged to be near to the flange. The shield case protects an acoustic part located in a wall surface of a passenger room of a railway vehicle. A protective cover(300) protects an inside of the frame by covering wide one end of the frame which is placed to face an inner side of the passenger room.

Description

Loudspeaker apparatus for cabin vehicle {Speaker apparatus for cabin of railway vehicle}

The present invention relates to a speaker device for a passenger compartment of a railway vehicle, and more particularly, an acoustic signal to be transmitted can be neatly transmitted in a room without a ringing phenomenon, and its maintenance work is very simple, The present invention relates to a speaker device for a cabin of a railway vehicle that can greatly improve quality.

In general, a railroad car on which a passenger boards a passenger is installed on a wall (including a ceiling) inside a cabin, so that passengers in the cabin can recognize boarding information and notice information transmitted from a cab or a broadcasting room. A plurality of speaker devices for sending out are provided.

1 is a cross-sectional view showing a state in which a speaker device for a guest room of a conventional railway vehicle is installed in a guest room. As shown in FIG. 1, a conventional railway vehicle speaker system includes a cone-shaped frame 11 and an acoustic unit 12 installed on the frame 11 to convert electrical signals into acoustic signals. The speaker unit 10 is fixed to the auxiliary plate 20 installed on the wall surface CW of the room, and is provided to be fixed to the rear side of the auxiliary plate 20 by bolts BT instead of one side of the inside of the room.

In addition, the cover plate 30 which protects the speaker unit 10 by covering the installation hole 21 formed in the auxiliary plate 20 so that the sound signal transmitted from the speaker unit 10 can pass through the auxiliary plate 20. It is fixed by bolts BT on one side of the cabin interior.

In the conventional speaker system for a railway vehicle, the speaker unit 10 is provided so as to prevent the speaker unit 10 from protruding to one surface inside the cabin of the auxiliary plate 20 and causing interference with the cover plate 30. ) Is fixed to the rear side of the auxiliary plate 20 by a predetermined depth, which causes a phenomenon in which the acoustic signal transmitted from the speaker unit 10 is reflected and diffracted and ringed in the recessed space, thereby causing passengers in the cabin. There is a problem that they do not hear the contents of the acoustic signal correctly.

And the speaker unit for the passenger compartment of the conventional railway vehicle, because the speaker unit 10 is fixed to the rear side of the auxiliary plate 20, rather than one side of the inside of the cabin, to proceed with the maintenance work for the speaker unit 10 In order to remove the auxiliary plate 20 from the wall surface (CW) of the room to remove the speaker unit 10, there is a disadvantage that the maintenance work is cumbersome and requires a lot of labor.

In addition, dust or the like is introduced through the plurality of communication holes 31 formed in the cover plate 30 so as to pass the sound signal transmitted from the speaker unit 10, thereby degrading the function of the speaker unit 10 and supplying air. There is a breakdown issue.

In addition, the speaker device for the passenger compartment of the conventional railway vehicle, as shown in Figure 2, a plurality of bolts (BT) and the cover plate 30 for fixing the cover plate 30 to the auxiliary plate 20 Since the communication hole 31 has a structure that is exposed to the cabin, there is a disadvantage that the quality of the appearance is low.

In order to solve the above problems, the present invention provides a wide end portion of the frame of the speaker unit through which the sound signal is transmitted, which is located outside the wall of the cabin, so that the sound signal can be directly transmitted into the cabin. It is possible to remove, and to provide a speaker device for a passenger compartment of a railway vehicle that can prevent the fastening means for fixing the speaker unit to the wall of the room is exposed to the room.

In order to solve the above problems, the passenger vehicle speaker system of the railway vehicle according to the present invention is formed in a cone shape and provided with a flange at a wide end thereof and a frame provided at a narrow other end of the frame. A speaker unit including a sound unit for converting an electrical signal into an acoustic signal; A protective case having one side formed in an open cover shape, the one side of which is installed to be in contact with or adjacent to the flange to cover and protect the acoustic part located in a cabin wall of a railway vehicle; It is installed to cover the wide end of the frame which is installed toward the inside of the cabin to protect the inside of the frame, passing through the sound signal transmitted from the speaker unit and the sound signal passes through the inflow or tentacles of the foreign matter And a protective cover including a mesh provided in the through-hole to block, wherein the speaker unit is inserted into an insertion hole formed in the wall of the cabin and the flange is directly contacted and fixed to the cabin wall of the outer circumference of the insertion hole.

The protective cover may include a plurality of fixing arms provided through the plurality of through-holes formed in the frame so that the locking protrusions protruding outwardly from the end portions thereof are fixed to the plurality of fixing holes formed in the protective case. have.

The plurality of fixing arms are each made of a material having elasticity, and when the locking projection is viewed from the side, when the protective cover is fixed to the protective case to guide the locking of the locking projection to the fixing hole and the protection When the cover is pulled, the protective cover may be provided in a '<' shape having a pair of inclined surfaces that guide the fixed arm inwardly to be separated.

The speaker unit may be connected to the wall surface of the room through a plurality of fastening holes formed in the wall of the room along the outer circumference of the insertion hole, and through a plurality of coupling holes formed in the flange to correspond to the plurality of fastening holes. It may be provided to be fixed.

The protective cover may be provided in a size and shape to cover the fastening means together with the wide end of the frame so that the fastening means is not exposed to the inside of the cabin.

According to the speaker device for a passenger compartment of a railway vehicle according to the present invention, a speaker unit is inserted into an insertion hole formed in a wall of a cabin, and a flange provided in a frame of the speaker unit is directly fixed to the wall of the cabin, so that a sound signal is transmitted. The wide end of the frame is located outside the cabin wall so that the acoustic signal can be transmitted cleanly in the cabin without ringing.

In this way, the speaker part is inserted into the insertion hole formed in the room wall from the inside of the room, and the flange is directly fixed to the wall of the room. By being provided to be fixed to or detached from the protective case through a fixing arm provided with a locking projection that can be released, it is easy to install and remove the device from the inside of the room is very easy maintenance.

In addition, the protective cover is provided to cover not only the wide end of the frame but also the flange and the fastening means for fixing the flange to the wall of the room, so that the flange or the fastening means is not exposed to the room, the appearance seen from the room interior The quality can also be greatly improved.

1 is a cross-sectional view showing a state in which a speaker apparatus for a guest room of a conventional railway vehicle is installed;
2 is a view showing an appearance of a conventional speaker unit for a passenger compartment of a railway vehicle installed in a cabin interior;
3 is a side view of a speaker device for a cabin of a railway vehicle according to a preferred embodiment of the present invention;
Figure 4 is a side view showing the separated speaker unit for the passenger compartment of the railway vehicle according to an embodiment of the present invention,
5 is a plan view of a speaker unit provided in the speaker apparatus for a passenger compartment of a railway vehicle according to an exemplary embodiment of the present invention;
6a to 6d is a view showing a procedure for installing the speaker unit for the cabin of the railway vehicle according to an embodiment of the present invention in the cabin,
FIG. 7 is a view illustrating an appearance of a railroad vehicle guest room speaker device installed in a cabin, according to an exemplary embodiment of the present invention.

DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

In the speaker system for a passenger compartment of a railway vehicle according to the present invention, the speaker unit for converting an electric signal into an acoustic signal is directly installed and fixed on a cabin wall (including a ceiling surface) inside a cabin, and the boarding and unloading guide information transmitted from a cab or a broadcasting room, It is a device that sends notice information and so on to the passengers in the cabin as an acoustic signal.

Hereinafter, with reference to the accompanying Figures 1 to 5, it will be described in detail the configuration and effect of the speaker system for the passenger compartment of the railway vehicle according to an embodiment of the present invention. The speaker device for a passenger compartment of a railway vehicle according to an exemplary embodiment of the present invention includes a speaker unit 100, a protective case 200, and a protective cover 300.

The speaker unit 100 transmits an acoustic signal into a cabin, and has a cone shape and a frame 110 having a flange 111 formed at a wide end thereof and a narrow end of the frame 110 therein. It includes a sound unit 120 provided to convert the electrical signal into a sound signal.

The frame 110 is wide in one end and narrow in the other end in a cone shape to form a frame of the speaker unit 100, and provides a space in which the sound unit 120 may be installed. The acoustic unit 120 converts an electrical signal into an acoustic signal, including a magnetic material, a damper, a coil, a center pole, an edge, and the like, and the configuration of the acoustic unit 120 may be understood by those skilled in the art. Since it is obvious to those who have one (hereinafter referred to as 'the person in charge'), a detailed description thereof will be omitted.

The speaker part 100 is inserted into the insertion hole CW-1 formed in the cabin wall surface CW from the inside of the cabin, and its flange 111 is directly contacted and fixed to the cabin wall surface CW of the outer periphery of the insertion hole CW-1. As a result, it is directly fixed to the cabin wall surface CW.

To this end, the flange 111 is provided in a shape corresponding to the shape of the insertion hole (CW-1), the size is provided larger than the insertion hole (CW-1), the flange 111 is inserted into the room wall (CW) A plurality of coupling holes 111-1 are formed to correspond to the plurality of coupling holes CW-2 formed along the outside of the CW-1, and the coupling means 111-2, such as a bolt, is coupled to the coupling hole ( 111-1) and through the fastening hole (CW-2).

As shown in FIG. 3, the protective case 200 is provided in a cover shape with one side open, and the acoustic part 120 of the speaker unit 100 is inserted into one open side thereof, and one side thereof has a flange ( By being installed in contact with 111, all the parts located inside the cabin wall surface (CW) of the speaker unit 100 including the acoustic unit 120 to cover and protect.

The protective case 200 is fixed to the frame 110 of the speaker unit 100 in such a state that covers the sound unit 120. A plurality of indentations 220 are formed at the end of the open side of the protection case 200 to protrude into the protection case 200, such that the indentation 220 is in contact with the outer surface of the frame 110. The protective case 200 is fixed to the frame 110 by a forced fit method.

Of course, the manner in which the protective case 200 is fixed to the frame 110 is not limited thereto, and as another embodiment, a separate flange portion is formed at an end of an open side of the protective case 200, and this flange By being interposed between the additional cabin wall surface CW and the flange 111 of the frame 110, the fastening means 111-2 fixes the speaker unit 100 to the cabin wall surface CW and at the same time the speaker unit ( 100) and the protective case 200 may be implemented to perform a role.

In this case, a separate binding hole is formed in the flange portion, and the fastening means 111-2 is coupled to the coupling hole through the coupling hole 111-1 and the fastening hole CW-2, thereby providing a speaker unit ( 100) and the protective case 200 may also be provided to perform a role.

The method of fixing the protective case 200 to the frame 110 puts out that a variety of known methods can be applied.

In a preferred embodiment of the present invention, the protective case 200 is completely covered with the speaker unit 100, one side thereof is installed in contact with the flange 111, but is not limited to this form of covering the sound unit 120 One side of the log may be installed to the extent adjacent to the flange 111.

On the other hand, the protective case 200 is formed with four rectangular fixing holes 210, the fixing hole 210 is a locking projection 331 provided in the fixing arm 330 of the protective cover 300 to be described later ) Is inserted into the hook, and plays an important role in fixing the protective cover 300 to the protective case 200. The role of the fixing hole 210 will be described in more detail when the locking protrusion 331 is described.

The protective cover 300 is installed to cover a wide end of the frame 110 that is installed toward the inside of the room to protect the acoustic unit 120 located inside the frame 110 from foreign matter or tentacles (觸手), By covering the fastening means (111-2) installed through the coupling hole (111-1) and the fastening hole (CW-2) to fix the speaker unit 100 to the wall surface (CW) of the room, It serves to improve quality.

In addition, as shown in FIG. 4, a pass hole 310 is formed in the protective cover 300 in a shape corresponding to a wide end of the frame 110 so as to pass an acoustic signal transmitted from the speaker unit 100. do.

The passage hole 310 is provided with a mesh (mesh) made of a material such as metal or fiber that can pass the acoustic signal but block the inflow of foreign matter or tentacles.

And the protective cover 300 covers the fastening means (111-2) to cover the role of improving the appearance of the device, the flange of the speaker unit 100 fixed to the room wall (CW) inside the room It is provided with a sufficient size and shape to cover both the 111 and the fastening means (111-2).

On the other hand, as shown in Figure 4, the protective cover 300, the four fixed arms on the back side of the protective cover 300 so as to pass through a plurality of through holes 112 formed in the frame 110 ( 330 is provided, the protective case 331 is formed in such a way that the locking projections 331 protruding outward from the end of the fixed arm 330 are inserted into the four fixing holes 210 formed in the protective case 200, respectively. 200).

In more detail, the fixed arm 330 is made of a material having elasticity, such as steel, the fixing protrusion 331 is provided in a '<' shape protruding outward when viewed from the side, It is formed to have a pair of inclined surfaces 331-1 and 331-2 to the lower side.

Therefore, when the fixed arm 330 is inserted into the protective case 200 to fix the protective cover 300 to the protective case 200, the fixed arm 330 is end by the inner surface of the protective case 200 When the part is pressed inwards and reaches the fixing hole 210, the pair of inclined surfaces 331-1 and 331-2 comes into contact with the inner circumferential portion of the fixing hole 210, and the locking projections for the fixing hole 210 ( 331 guides the jam.

On the contrary, when the protection arm 300 is pulled to separate the protection cover 300 from the protection case 200, and the fixed arm 330 is transferred from the inside of the protection case 200 to the outside, the inclined surface 331-2 is fixed to the fixing hole 210. By bending the fixed arm 330 to the inside while being pressed by the inner circumference of the), the protective cover 300 can be easily separated from the protective case 200.

Of course, in the state in which the protective cover 300 is fixed to the protective case 200, the locking protrusion 331 is inserted into the fixing hole 210 so that the elastic force of the fixing arm 330 is the locking protrusion for the fixing hole 210. Stability of the basic protective cover 300 is secured because it acts in the outward direction to prevent the departure of the (331).

In the speaker system for a passenger compartment of a railway vehicle according to an exemplary embodiment of the present invention, four fixed arms 330 and fixing holes 210 are formed to be equally spaced apart from each other, but the number of provisions thereof is not limited thereto. The locking projection 331 is provided in a '<' shape when viewed from the side and the fixing hole 210 is provided in a rectangular shape, but if the locking projection 331 is provided to be fixed to the fixing hole 210 is sufficient. It is noted that the shape is not limited thereto.

Hereinafter, referring to FIGS. 6A to 7, the operation and use of the room speaker device for a railway vehicle through the procedure of installing the room speaker device for the railway vehicle according to the preferred embodiment of the present invention on the cabin wall surface CW. The state will be described in detail.

First, as shown in FIG. 6A, the insertion hole CW-1 and the fastening hole CW-2 are formed in the cabin wall surface CW. In this case, the insertion hole CW-1 is smaller than the flange 111 formed in the frame 110 of the speaker unit 100, and the protective case 200 covering the acoustic unit 120 of the speaker unit 100 is inserted therein. The fastening holes CW-2 are adjacent to the outer circumference of the insertion hole CW-1 and correspond to the coupling holes 111-1 formed in the flange 111. Is formed.

Next, as shown in FIG. 6B, the protective case 200 is coupled to the speaker unit 100 to cover all of the portions located inside the cabin wall surface CW of the speaker unit 100 including the acoustic unit 120. Let's do it.

Thereafter, the combination of the speaker unit 100 and the protective case 200 is inserted such that the protective case 200 passes through the insertion hole CW-1 so that the flange 111 of the frame 110 is inserted into the outer peripheral portion of the insertion hole CW-1. Contact the wall surface of the room (CW), the coupling hole (111-1) and the fastening hole (CW-2) correspond.

And as shown in Figure 6c, by fastening the fastening means 111-2, such as bolts through the coupling hole (111-1) and the fastening hole (CW-2) to the speaker unit 100 and the protective case 200 ) To the room wall (CW).

Then, as shown in Figure 6d, the protective cover 300 is installed to cover up to the wide end, the flange 111 and the fastening means (111-2) of the frame 110 is installed facing the inside of the cabin.

More specifically, when the four fixing arms 330 of the protective cover 300 are inserted and pushed through the through holes 112 of the frame 110, the locking protrusion 331 of the fixing arm 330 is pushed. The fixed arm 330 is bent inward while being pressed by the inner surface of the protective case 200.

In this state, if the protection cover 300 continues to be pushed, the engaging projection 331 reaches the fixing hole 210 of the protective case 200 while the pair of inclined surfaces 331-1 and 331-2 of the engaging projection 331 ) Guides the locking position, and the locking protrusion 331 is inserted into and fixed to the fixing hole 210.

Accordingly, the protective cover 300 is coupled to the protective case 200 while the locking protrusions 331 of the four fixing arms 330 are fixed to the four fixing holes 210. In this state, the elastic force for restoring the curved state of the fixed arm 330 continues to operate in the direction in which the locking protrusion 331 is fixed to the fixing hole 210 while the protective cover 300 is easily separated from the protective case 200. Do not

FIG. 7 is a view showing a state of a room speaker device of the railway vehicle in which the installation is completed as viewed from the inside of the cabin. As can be seen, since the protective cover 300 completely covers the flange 111 and the fastening means 111-2 to block its exposure, it can be seen that the quality of the appearance of the interior of the cabin is greatly improved.

Dismantling to proceed with the maintenance work for the speaker unit for the passenger compartment of the railway vehicle begins with the operation to pull the protective cover 300 to remove.

When the protective cover 300 is pulled, the inclined surface 331-2 of the locking protrusion 331 is pressed by the inner circumferential portion of the fixing hole 210 and guides the fixing arm 330 to bend inward. By releasing the locking projection 331 against the fixing hole 210, if only a force of a predetermined size or more is applied, the protective cover 300 can be easily separated from the protective case 200.

Since the subsequent dismantling work may proceed in the reverse order of the above-described installation work, further detailed description thereof will be omitted.

As described above, in the speaker system for the passenger compartment of the railway vehicle according to the present invention, the speaker unit 100 is inserted into the insertion hole CW-1 formed in the cabin wall surface CW, and the frame 110 of the speaker unit 100 is provided. The flange 111 provided in the) is provided to be directly fixed to the room wall (CW), the wide end of the frame 110 of the speaker unit 100 to which the sound signal is transmitted is located outside the room wall (CW) As a result, the acoustic signal can be sent out cleanly in the room without ringing, and the device can be easily installed and detached from the inside of the room, so that the maintenance work is very simple, and the flange 111 and the fastening means 111- Including the protective cover 300 to cover a wide end of the frame 110, including 2) can greatly improve the quality of the appearance of the device exposed to the room.

Although the present invention has been described in detail only with respect to the described embodiments, it will be apparent to those skilled in the art that various modifications and variations are possible within the technical spirit of the present invention, and such modifications and variations belong to the appended claims. will be.

Description of the Related Art [0002]
100: speaker 110: frame
111: flange 111-1: coupling hole
111-2: fastening means 112: through hole
120: sound unit 121: connector
200: protective case 210: fixing hole
220: indentation 300: protective cover
310: through hole 320: mesh
330: fixed arm 331: locking projection
331-1, 331-2: Slope CW: Room wall
CW-1: Insertion hole CW-2: Fastening hole

Claims (5)

A speaker unit comprising a frame having a cone shape and having a flange at a wide end thereof, and a sound unit provided over the inside at a narrow other end of the frame and converting an electrical signal into an acoustic signal;
A protective case having one side formed in an open cover shape, the one side of which is installed to be in contact with or adjacent to the flange to cover and protect the acoustic part located in a cabin wall of a railway vehicle;
It is installed to cover the wide end of the frame which is installed toward the inside of the cabin to protect the inside of the frame, passing through the sound signal transmitted from the speaker unit and the sound signal passes through the inflow or tentacles of the foreign matter Including; a protective cover including a mesh provided in the through hole to block;
The speaker unit is inserted into an insertion hole formed on the wall surface of the cabin speaker device for a railway vehicle, characterized in that the flange is in direct contact fixed to the room wall surface of the outer peripheral portion of the insertion port. The method of claim 1,
The protective cover,
A plurality of fixing arms provided through the plurality of through-holes formed in the frame so that the locking protrusions protruding outward from the end portions thereof are fixed to the plurality of fixing holes formed in the protective case;
Speaker device for a room of the railway vehicle comprising a. The method of claim 2,
The plurality of fixed arms are each made of a material having elasticity,
When the locking projection is viewed from the side, when the protective cover is fixed to the protective case to guide the locking of the locking projection to the fixing hole and the protective cover so that the protective cover can be separated when the protective cover is pulled The speaker device for a passenger compartment of a railway vehicle, characterized in that it is provided in a '<' shape having a pair of inclined surfaces to guide the curved inward. The method of claim 1,
The speaker unit,
It is fixed to the wall of the room through a plurality of fastening holes formed on the wall of the room along the outer periphery of the insertion hole and a fastening means fastened through a plurality of coupling holes formed in the flange to correspond to the plurality of fastening holes. Loudspeaker unit for passenger cars of railway vehicles. The method of claim 4, wherein
The protective cover,
Speaker unit for a railway vehicle, characterized in that the fastening means is provided with a size and shape that can cover the fastening means with a wide end of the frame so that the fastening means is not exposed to the inside of the cabin.

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