CN108834007A - An installation structure and method of an invisible speaker - Google Patents

Abstract

The invention relates to the field of flat wall invisible sound boxes, and provides an installation structure and method of an invisible sound box, which are used to solve the installation problem of the invisible sound box. The installation structure and method of an invisible sound box provided by the present invention include a vibration panel, an exciter, an installation frame and a positioning piece, the vibration panel is embedded in the opening of the installation surface, and the back of the vibration panel faces the installation The opening on the surface, the exciter is installed on the back of the vibration panel, the installation frame is arranged between the installation surface and the vibration panel, the installation frame is connected with the vibration panel, and the positioning piece is arranged on On the installation frame, the positioning piece is parallel to the installation surface, the front of the positioning piece is flush with the front of the vibration plane, the positioning piece exceeds the edge of the installation frame, and there is no less than one positioning piece. Through the positioning piece, the invisible speaker can be easily installed on the installation surface.

Description

An installation structure and method of an invisible speaker

technical field

The invention relates to the field of flat-panel in-wall invisible speakers, in particular to an installation structure and method of an invisible speaker.

Background technique

Flat panel speakers can be installed indoors on walls, steps of stairs or ceilings. The vibrating panel of the flat-panel speaker facing the user's side, usually this board is flush with the wall or other flat surface, so that the flat-panel speaker is hidden in the wall. After the flat-panel speaker is installed on the wall, adjusting the color of the front of the vibration panel can make the flat-panel speaker integrated with the wall, making the speaker "invisible".

Usually, apply putty ash on the front of the vibrating panel to realize the "invisibility" of the speaker, or lay a layer of gypsum board on the wall, and then install the speaker on the gypsum board. The gap at the joint of the gypsum board is also Apply putty ash to achieve the "invisible" effect of the speaker.

In the existing technology, when the invisible speaker is installed on the wall, screw holes are usually added at the connection between the back of the vibration panel and the wall, and fixed to the wall or the installed frame in the wall by screws, but this fixing method It is easy to cause the installation position of the invisible speaker to be uncertain, and it is not easy to be flush with the plane of the wall. Therefore, repeated debugging is required, which increases the difficulty of installation.

Contents of the invention

The technical problem solved by the invention is the installation problem of the invisible sound box, and an installation structure and method of the invisible sound box are provided.

In order to solve the problems of the technologies described above, the technical solution provided by the invention is:

An installation structure of an invisible sound box, comprising a vibration panel, an exciter, an installation frame and a positioning piece, the vibration panel plate is embedded in the opening of the installation surface, and the back of the vibration panel faces the opening of the installation surface, The exciter is installed on the back of the vibration panel, the installation frame is arranged between the installation surface and the vibration panel, the installation frame is connected with the vibration panel, the positioning piece is arranged on the installation frame, the The positioning piece is parallel to the installation surface, the front of the positioning piece is flush with the front of the vibration plane, the positioning piece exceeds the edge of the installation frame, and there is no less than one positioning piece.

The positioning piece is flush with the installation plane. When installing the speaker, the speaker is installed on the wall along the horizontal direction from the front of the vibrating panel to the back. When the front of the vibrating panel is flush with the installation surface, the positioning piece is in contact with the wall, limiting the movement of the invisible speaker.

When the front of the vibration panel is flush with the installation surface, the positioning piece restricts the movement of the speaker, making it easy to determine the installation depth and installation position of the speaker.

Preferably, the front of the vibration panel is rectangular, including two short sides and two long sides, and at least one of the positioning pieces is arranged on one short side of the front of the vibration panel. The rectangular vibrating panel has a better sound effect and is easy to install.

Preferably, there are four positioning pieces, and the positioning pieces are arranged at four corners of the front of the vibrating panel. The positioning pieces located at the four corners of the rectangle can improve the installation stability of the invisible sound box.

Preferably, one of the positioning pieces is set on the short side of the front of the vibration panel, and the other two of the positioning pieces are set on the other short side of the front of the vibration panel. The positioning piece arranged on the short side can effectively reduce the manufacturing difficulty when it is made on the installation frame, and the positioning piece can be conveniently installed on the installation frame.

Preferably, the positioning piece is made of flat material, and the thickness of the positioning piece is not less than 0.2mm. The thinner the positioning piece is, the easier it is for the front of the vibration panel to be flush with the installation surface.

Preferably, the positioning piece is provided with a notch, the notch is set on the other side of the side where the positioning piece is connected to the installation frame, and the notch penetrates the positioning piece. The positioning piece is generally in the shape of a rectangular strip, one end is connected with the installation frame, and a notch is set on the other end; the positioning screw can be set on the installation plane first, and the screw includes a nut and a screw, and then the notch is clamped with the screw of the screw, and then Push the invisible speaker into the opening on the mounting surface along the screws. The notch is formed by inward depression at the edge of the positioning piece, and the contour formed by the depression can be in various forms such as arc, rectangle, zigzag and so on.

Preferably, the notch is a through hole. The through-hole-shaped notch facilitates fabrication.

Preferably, the installation frame is connected with the back shell, and the back shell is arranged on the back of the vibrating panel. The back shell can protect the sound unit of the speaker, and can also be used as a positioning device for speaker installation.

Preferably, the back shell is provided with through holes, and the said through holes are not less than one. The through hole can allow the sound generated by the vibrating panel to enter the opening on the installation surface, which can dissipate heat and improve sound quality to a certain extent.

A method for installing an invisible speaker, comprising the steps of:

(1), insert the invisible speaker into the opening of the installation surface, when at least one of the positioning pieces is in contact with the installation surface, adjust the position of the invisible speaker until the front of the vibration panel is the same as the installation surface flat;

(2) Fix the invisible speaker on the installation plane with the notch on the positioning piece.

The size of the opening on the mounting surface is roughly the same as the size of the mounting frame. After the invisible speaker is embedded in the mounting surface, there is little or no gap between the frame and the mounting surface. The installation position of the invisible speaker is controlled by the positioning piece, which is convenient for positioning and ensures that the front of the vibration panel is flush with the installation surface. Installing screws or similar fixing devices on the notch on the positioning piece can make the invisible speaker stably fixed on the installation surface.

Compared with the prior art, the present invention has the beneficial effects that: the positioning piece is flush with the installation plane, and when the sound box is installed, the sound box is installed on the wall along the horizontal direction from the front to the back of the vibrating panel. When the front of the vibrating panel is flush with the installation surface (wall), the positioning piece is in contact with the installation surface, which limits the movement of the invisible sound box and facilitates the determination of the installation depth and installation position of the sound box.

Description of drawings

Fig. 1 is a front view of an installation structure of an invisible speaker.

Fig. 2 is a rear view of an installation structure of an invisible speaker.

Fig. 3 is a top view of an installation structure of an invisible speaker.

Fig. 4 is a schematic diagram of the structure of the positioning sheet.

Fig. 5 is a rear view of another structure of an invisible sound box.

Fig. 6 is a side view of another structure of an invisible sound box.

Among them: 100, invisible speaker, 110, vibration panel, 120a, 120b, 120c, 120d positioning piece, 130, connector, 140, installation frame, 150, back shell;

210, notch, 215, far end, 220, proximal end, 221, outer edge.

300, invisible sound box, 310, vibration panel, 320a, 320b, 320c, 320d positioning piece, 330, connector, 340, installation frame, 350, back shell, 352a～i, panel, 360a～b, through hole.

Detailed ways

The following examples are a further description of the present invention, not a limitation of the present invention.

1 to 3 are the front view, back view and top view of the invisible sound box for installation on the installation plane. The installation surface or installation plane described in the present invention is a structure or appliance on the building or inside, such as a wall , ceilings, a flat surface for air-conditioning units, etc. The opening on the mounting surface refers to a continuous opening on the aforementioned plane. In most cases, it is a rectangular groove with a certain depth, which is deep enough to place a flat invisible speaker. Alternatively, the installation plane can also be a surface of other forms, on which there is a formed groove-like opening with a certain depth, such as a circle.

FIG. 1 is a front view of the invisible speaker, that is, the appearance of the invisible speaker 100 installed on the wall that the user can see without applying putty. In one embodiment of the present invention, the invisible speaker 100 includes a vibrating panel 110 , and the vibrating planar panel occupies most of the front of the invisible speaker 100 . The vibration panel 110 is rectangular. Experienced engineers can choose suitable materials and methods to manufacture the vibrating panel 110, so as to produce speaker effects that meet customer needs. The vibrating panel in the present invention is not limited to being rectangular, and may also be circular or other possible shapes.

Further, the invisible sound box 100 includes at least one positioning piece, for example, four positioning pieces, including 120a, 120b, 120c and 120d. Four positioning pieces may be located at corners of the front face of the vibration panel 110 . The four positioning pieces are all arranged on the short sides of the front face of the rectangular vibrating panel 110 and protrude from the short sides of the rectangle. The number of positioning pieces in the present invention is not limited to four, and 2 or 6 or more are acceptable.

The invisible speaker 100 includes a connector 130 for externally engaging one or more electrical components inside the speaker 100 .

The invisible sound box includes an exciter (not shown in the figure), and the exciter is arranged on the back of the vibrating panel 110 . During operation, the vibrator drives the vibrating panel 110 to vibrate and emit sound. The vibrator is controlled by one or more signals from the connector 130 . The exciter can be connected with the audio amplifier unit through wires, and the exciter is driven by the amplifier unit. When driven by the vibration of the exciter, the vibrating panel 110 makes the invisible speaker 100 emit sound through vibration, and the sounding principle is similar to that of a violin or a piano.

In another embodiment of the present invention, the invisible sound box 100 further includes a mounting frame 140. The back of the vibration panel 110 is fixed on the installation frame 140, and all or almost all of the outer edges of the vibration panel 110 are within the installation frame. This ensures that when the vibrating panel 110 vibrates, the outer frame is fixed relative to the plate. It improves the stability of the installation and prevents the speaker from falling off due to the cracking of the putty ash on the front of the vibration panel.

In another embodiment of the present invention, the invisible sound box 100 further includes a back shell 150, which is installed on the installation frame 140 and covers the exciter, vibration panel and other components of the invisible sound box. When installed, the back shell can protect the back of the vibrating panel 110 and the vibrator. Further, the back shell 150 and the vibrating panel 110 form a resonant cavity. When the vibrating panel 110 is driven by the exciter, the backward sound from the vibrating panel 110 can resonate in the resonating cavity, improving the audio effect of the invisible speaker. The positioning piece can be connected with the vibrating panel through the installation frame 140 , or can be connected with the vibrating panel through the back shell 150 .

FIG. 3 provides a side view of invisible speaker 100 . The vibration panel 110 is fixed to the mounting frame 140. The back case 150 is fixed to the mounting frame 140 and supports the connector 130 . As shown in FIG. 3, the positioning pieces 120a, 120b, 120c, 120d are arranged along the outward direction of the center of the vibrating panel. When the invisible sound box 100 is to be installed in the installation surface, the direction of the positioning piece is parallel to the installation surface. In other words, the positioning piece is parallel to the front of the vibrating panel 110 . When the flat invisible sound box 100 is to be installed in the installation surface, the front of the positioning piece is also substantially flush with the front of the vibrating panel 110. In this embodiment, the backs of the positioning pieces 120 a , 120 b , 120 c , and 120 d are attached to the installation surface, and at this time, the fronts of the positioning pieces are flush with the front of the vibrating panel 110 . In another embodiment, the back side of the positioning pieces 120a, 120b, 120c, 120d (ie the surface facing away from the installation surface) may be flush with the front surface of the vibrating panel. In another embodiment, the positioning pieces 120a, 120b, 120c, 120d can be pressed into the installation surface.

The size of the gap in the mounting surface is set to be larger than the size of the vibrating panel 110 and the mounting frame 140, but small enough that when the invisible speaker 100 is installed, the positioning pieces 120a, 120b, 120c, 120d will be stuck in the gap, and The mounting surface is flush, and the front surface of the vibrating panel 110 is prevented from entering the opening of the mounting surface as far as possible, that is, the figure formed by the combination of the apex of the vibrating panel 110 and the fixed point of at least one positioning piece 120 is larger than the area of the upper opening in the mounting surface.

When a positioning piece is flush with the installation surface and the invisible speaker 100 is located in the opening of the installation surface, the fastening device can fix the invisible speaker 100 through the positioning piece, as further described below with reference to FIG. 4 . The invisible speaker 100 can be fixed in the installation surface by other means, such as gluing the invisible speaker 100 or parts thereof to the installation surface.

The back shell 150 may be made of metal (eg steel) or other material (eg carbon fiber).

FIG. 4 is a schematic diagram of the positioning piece 120a. Each of the other positioning pieces 120b, 120c, 120d of the flat invisible speaker described with reference to FIGS. 1 to 3 is similar thereto. A notch 210 is disposed on the positioning piece 120a. The notch 210 is disposed on the distal end 215 of the positioning piece 120a. The notch 210 may be formed by indenting the boundary of the distal end 215 inwardly. The notches cooperate with fasteners (such as screws or nails) to fix the positioning piece 120a to the installation surface during installation. The proximal end 220 is disposed on an end of the positioning piece 120A opposite to the notch 210 .

When fasteners are used to secure an invisible loudspeaker to a mounting surface, the shaft of the fastener can pass through the mounting surface and into the layer of material behind the mounting surface. The material of the second material layer is usually a stronger material than the material of the installation surface, which is convenient for fixing the positioning sheet, and then fixing the invisible sound box. The second layer of material includes, but is not limited to, wood, plastic or metal frames. As part of the installation process, the second material may already be present behind the installation surface at the beginning of installation, or may be installed behind the installation surface.

In FIG. 4 , the notch 210 is formed by indentation at the outer edge 221 of the positioning piece, so that the boundary of the notch 210 does not form a complete loop.

The opening of the notch 210 is narrow. The width D1 at the opening of the notch is smaller than the width D2 at the widest point of the notch. In this way, a fastener with a tapered head can be located substantially centrally in the recess 210 . The boundary of the notch 210 may be a circular arc.

The notch 210 may taper in the direction through which the positioning piece 120a passes through, that is, the notch 210 may be a countersunk screw hole, and at this time the contour of the notch surface may be an arc or a closed circle. The diameter of the notch at the front of the positioning piece 120a is larger than the diameter at the rear surface of the positioning piece 120a. The rear surface is a surface that is attached to the installation surface during the installation process of the invisible speaker 100 . The nut of the countersunk screw can be inserted into the notch to be flush with the front of the spacer. FIG. 4 is only a schematic view of the label 120a and does not show the countersunk feature of the notch 210 .

The positioning piece 120a in one embodiment of the present invention is made of metal, can be steel, and is very thin so that the thickness of the required gypsum layer covering the positioning piece 120a is as small as possible, and then the positioning piece 120a is on the installation surface difficult to be observed. The positioning piece 120a can also be made of other materials, such as carbon fiber. The positioning piece 120a can be made as an integral part integrally formed with the vibrating panel or the mounting frame.

The positioning piece 120a has a thickness less than 5mm, and in some embodiments of the present application, it may be: less than 3mm, less than 2mm, less than 1mm, 0.8mm and so on. The positioning piece 120a has a thickness of at least 0.2mm, which ensures that the positioning piece 120a is sufficiently stable and will not be deformed when it is installed on a wall or other installation surfaces.

5 and 6 are rear and side views of another embodiment of an invisible speaker 300 for installation in an opening in a mounting surface.

FIG. 5 is a rear view of the invisible speaker 300, and FIG. 6 is a side view of the invisible speaker. Unless otherwise described below, the invisible flat speaker 300 is substantially similar to the invisible flat speaker 100 described with reference to FIGS. 1 to 3 , including the positioning piece 120a described with reference to FIG. 4 . As mentioned above, the invisible speaker 300 includes at least one positioning piece 320 a , 320 b , 320 c , 320 d located at the corner of the vibrating panel 310 . The rear of the vibrating panel 310 is connected to a mounting frame 340 , and the mounting frame 340 surrounds the entire outer edge of the vibrating panel 310 .

The invisible speaker 300 also includes a vibrator (not shown), which is coupled to the back of the vibrating panel 310 and vibrates the vibrating panel 310 to generate sound when in operation. The mounting frame 340 supports the vibration panel 310 such that when the exciter and the vibration panel vibrate, the outer boundary of the vibration panel 310 is stable relative to the mounting surface.

The invisible speaker 300 also includes a connector 330 which in this embodiment connects to a mounting frame 340 . The connectors are used to connect external cables to one or more internal components of the invisible speaker 300 .

The invisible speaker 300 also includes a back shell 350 . The rear surface of the back shell includes a plurality of panels 352a, 352b, 352c, 352d, 352e, 352f, 352g, 352h, 352i, 352j, 352k, 352l, 352m. The panel 352a is a triangular panel with one side connected to the mounting frame 340, one side connected to the panel 352b, and one side connected to the panel 352c. The panel 352b is a triangular panel with one side connected to the mounting frame 340, one side connected to the panel 352a, and one side connected to the panel 352e. The panel 352c is a trapezoidal panel having a first side arranged at the mounting frame 340, a second side parallel to the first side connects the panel 352d, a third side connects the first side and the second side connects the panel 352a, and connects the second side. One side, the second side and the fourth side of the panel 352f. Panel 352d is a triangular panel having one side connecting panel 352c, one side connecting panel 352e and one side connecting panel 352h. Panel 352e is a triangular panel with one side connecting panel 352b, one side connecting panel 352d and one side connecting panel 352i. The panel 352f is a triangular panel with one side connected to the mounting frame 340, one side connected to the panel 352c, and one side connected to the panel 352g. Panel 352g is a triangular panel with one side connected to mounting frame 340, one side connected to panel 352f, and one side connected to panel 352h. Panel 352h is a triangular panel with one side connected to panel 352d, one side connected to panel 352g and one side connected to panel 352l. Panel 352i is a triangular panel having one side connecting panel 352e, one side connecting panel 352j and one side connecting panel 352l. Panel 352j is a triangular panel with one side connected to mounting frame 340, one side connected to panel 352i, and one side connected to panel 352k. Panel 352k is a triangular panel having one side connected to mounting frame 340, one side connected to panel 352j, and one side connected to panel 352m. Panel 3521 is triangular in shape with one side connecting panel 352h, one side connecting panel 352i and one side connecting panel 352m. Panel 352m is a triangular panel with one side connected to mounting frame 340, one side connected to panel 3521, and one side connected to panel 352k.

Panels 352a-m are planar and arranged in a number of different orientations. In this way, the sound interference inside the rear shell 350 can be reduced, thereby improving the sound quality of the invisible speaker 300 . In this particular embodiment, panels 352a-m each face in different directions.

The back shell 350 may define therein at least one through hole 360a, 360b in at least one panel 352a-m. In this embodiment, there are two through-holes 360a in panel 352i and two through-holes 360b in panel 3521, although this is merely an example and the number and locations of through-holes are not limited to these numbers or panels. The through-holes 360a, 360b allow the sound generated by the exciter in combination with the vibrating panel 310 to enter a larger cavity provided in the mounting surface to resonate therein. This improves the acoustic performance of the invisible speaker 300, especially for low frequency sounds, which require more space to fully resonate.

The invisible speaker 100, 300 is installed by forming an opening in the mounting surface, wherein the opening is sized to enclose the vibrating panel 110 or 310 and the invisible speaker 100 or 300. The invisible speaker 100 or 300 is inserted into the opening until at least one positioning piece 120a-d, 320a-d is pushed towards the mounting surface and the vibrating panel 110 or 310 is substantially flush with the mounting surface. Then, the invisible sound box 100 or 300 is fixed on the installation surface through the positioning pieces 120a-d, 320a-d. The size of the opening is set to be large enough to allow the vibrating panel 110 or 310, the mounting frame 140, 340 and the back case 150, 350 to fit freely in the opening while preventing the positioning pieces 120a-d, 320a-d from entering the opening , but adheres to the mounting surface. The opening is deep enough so that the vibrating panel 110 or 310, mounting frame 140 or 340, exciter and backshell 150 or 350 can be placed within the opening without the rear of the invisible speaker 100 or 300 touching the rear of the opening . For example, for a flat panel invisible speaker with dimensions of 45 x 20 x 7 cm (not including the positioning sheet), the opening in the mounting surface may be 47 x 21 x 10 cm or 48 x 22 x 15 cm. It should be understood that these dimensions are examples only, and that the dimensions of the openings are not limited to these numbers or ratios.

As another embodiment of the present invention, an installation structure and method of an invisible sound box 100 includes a vibrating panel 110, an exciter, an installation frame 140 and a positioning piece 120, and the vibrating panel 110 is embedded in the opening of the installation surface Inside, the back of the vibration panel 110 faces the opening on the installation surface, the vibrator is installed on the back of the vibration panel 110, the installation frame 140 is arranged between the installation surface and the vibration panel 110, the The mounting frame 140 is connected with the vibrating panel, the positioning piece 120 is arranged on the mounting frame, the positioning piece 120 is parallel to the mounting surface, and the front of the positioning piece 120 is flush with the front of the vibration plane 110, so The above-mentioned positioning pieces 120 exceed the edge of the installation frame 140, and the number of the above-mentioned positioning pieces 120 is four. The front of the vibrating panel 110 is rectangular, including two short sides and two long sides, and at least one of the positioning pieces 120 is arranged on one short side of the front of the vibrating panel 110 . There are four positioning pieces 120 , respectively 120 a , 120 b , 120 c , and 120 d . The positioning pieces are arranged at four corners of the front side of the vibrating panel 110 . The positioning piece 120 a and the positioning piece 120 b are arranged on the short side of the front of the vibration panel 110 , and the positioning piece 120 c and the positioning piece 120 d are arranged on the other short side of the front of the vibration panel 110 . The positioning piece 120 is made of flat material, and the thickness of the positioning piece 120 is not more than 1 mm. The positioning piece 120 is provided with a notch 210, and the notch 210 is arranged on the other side of the side where the positioning piece 120 is connected with the mounting frame 140, and the notch 210 runs through the positioning piece 120. The notch 210 is a through hole. The installation frame 140 is connected with the back shell 150 , and the back shell 150 is arranged on the back of the vibrating panel 110 . The back shell 150 is provided with a through hole, and the said through hole is not less than one. Including the following steps:

(1), embed the invisible sound box 100 in the opening of the installation surface, when at least one of the positioning pieces 120 is in contact with the installation surface, adjust the position of the invisible sound box 100 to the position of the vibration panel 110 The front is flush with the installation surface;

(2) Fix the invisible sound box 100 on the installation plane with the notch 210 on the limiter.

The positioning piece is flush with the installation plane. When installing the speaker, the speaker is installed on the wall along the horizontal direction from the front of the vibrating panel to the back. When the front of the vibrating panel is flush with the installation surface (wall), the positioning piece is in contact with the wall, limiting the movement of the invisible speaker.

When the front of the vibration panel is flush with the installation surface, the positioning piece restricts the movement of the speaker, making it easy to determine the installation depth and installation position of the speaker. The rectangular vibrating panel has a better sound effect and is easy to install. The positioning piece arranged on the short side can effectively reduce the manufacturing difficulty when it is made on the installation frame, and the positioning piece can be conveniently installed on the installation frame. The positioning piece arranged on the short side can effectively reduce the manufacturing difficulty when it is made on the installation frame, and the positioning piece can be conveniently installed on the installation frame. The thinner the positioning piece is, the easier it is for the front of the vibration panel to be flush with the installation surface. The positioning piece is generally in the shape of a rectangular strip, one end is connected with the installation frame, and a notch is set on the other end; the positioning screw can be set on the installation plane first, and the screw includes a nut and a screw, and then the notch is clamped with the screw of the screw, and then Push the invisible speaker into the opening on the mounting surface along the screws. The notch is formed by inward depression at the edge of the positioning piece, and the contour formed by the depression can be in various forms such as arc, rectangle, zigzag and so on. The through-hole-shaped notch facilitates fabrication. The back shell can protect the sound unit of the speaker, and can also be used as a positioning device for speaker installation. The through hole can make the sound generated by the vibrating panel enter the opening on the installation surface, which is a way to dissipate heat and improve the sound quality to a certain extent.

The size of the opening on the mounting surface is roughly the same as the size of the mounting frame. After the invisible speaker is embedded in the mounting surface, there is little or no gap between the frame and the mounting surface. The installation position of the invisible speaker is controlled by the positioning piece, which is convenient for positioning and ensures that the front of the vibration panel is flush with the installation surface. Installing screws or similar fixing devices on the notch on the limiter can make the invisible speaker stably fixed on the installation surface.

The above detailed description is a specific description of the feasible embodiments of the present invention. The above embodiments are not used to limit the patent scope of the present invention. All equivalent implementations or changes that do not depart from the present invention should be included in the patent scope of this case. middle.

Claims (10)

1. An installation structure of an invisible sound box, characterized in that it comprises a vibrating panel, an exciter, a mounting frame and a positioning piece, the vibrating panel is embedded in the opening of the mounting surface, and the back side of the vibrating panel is facing the installation The opening on the surface, the exciter is installed on the back of the vibration panel, the installation frame is arranged between the installation surface and the vibration panel, the installation frame is connected with the vibration panel, and the positioning piece is arranged on On the installation frame, the positioning piece is parallel to the installation surface, the front of the positioning piece is flush with the front of the vibration plane, the positioning piece exceeds the edge of the installation frame, and there is no less than one positioning piece. 2. The installation structure of an invisible sound box according to claim 1, wherein the front of the vibration panel is rectangular, including two short sides and two long sides, and at least one of the positioning pieces is provided On one short edge of the front of the vibrating panel. 3. The installation structure of an invisible sound box according to claim 1, characterized in that there are four positioning pieces, and the positioning pieces are arranged at four corners of the front of the vibrating panel. 4. The installation structure of a kind of invisible sound box according to claim 3, it is characterized in that, two positioning pieces are arranged on the short side of the vibrating panel front in the described positioning pieces, and the other two positioning pieces in the described positioning pieces The second positioning piece is arranged on the other short side of the front of the vibrating panel. 5 . The installation structure of an invisible sound box according to claim 1 , wherein the positioning piece is made of flat material, and the thickness of the positioning piece is not less than 0.2 mm. 6. The installation structure of an invisible sound box according to claim 5, wherein a notch is arranged on the positioning piece, and the notch is arranged on the other side of the side where the positioning piece is connected with the installation frame , the notch runs through the positioning piece. 7. The installation structure of an invisible sound box according to claim 1, wherein the notch is a through hole. 8 . The installation structure of an invisible sound box according to claim 1 , wherein the installation frame is connected to the back shell, and the back shell is arranged on the back of the vibrating panel. 9 . The installation structure of an invisible sound box according to claim 8 , wherein the back shell is provided with through holes, and the said through holes are not less than one. 10 . 10. A method for installing an invisible speaker, comprising the installation structure according to any one of claims 1 to 9, characterized in that it comprises the following steps: (1) Insert the invisible speaker into the opening of the installation surface. When at least one of the positioning pieces is in contact with the installation surface, adjust the position of the invisible speaker until the front of the vibration panel is the same as the installation surface. flat; (2) Fix the invisible speaker on the installation plane through the notch on the positioning piece.