CN215187182U

CN215187182U - Wall painting sound box

Info

Publication number: CN215187182U
Application number: CN202022748780.1U
Authority: CN
Inventors: 陈逸星
Original assignee: Beijing Xingape Power Electronic Technology Co ltd
Current assignee: Beijing Xingape Power Electronic Technology Co ltd
Priority date: 2020-11-24
Filing date: 2020-11-24
Publication date: 2021-12-14
Anticipated expiration: 2030-11-24

Abstract

The utility model provides a mural sound box, which comprises a canvas, an outer frame and a back plate, wherein the canvas is fixed on the outer frame, and the outer frame and the back plate are buckled to form an accommodating cavity; one end of the fixed support is fixed on the outer frame, and the other end of the fixed support faces the direction of the accommodating cavity and is connected with a vibrator; and one side of the vibrating plate is connected with the vibrator, and the other side of the vibrating plate is attached to one side of the canvas, which faces the back plate. Through the fixation of the fixed support to the vibrator, the canvas tension reduction caused by the dragging of the vibrator is avoided, and the acoustic performance of the wall painting sound box is improved.

Description

Wall painting sound box

Technical Field

The utility model relates to a digital electronic technology field, more specifically, the utility model relates to a mural sound box.

Background

The sound production principle of traditional speaker is with the signal of telecommunication transformation acoustic signal, also utilizes moving iron or moving coil unit to sound promptly, and structures such as receiver, earphone, stereo set have all adopted moving iron or moving coil unit to realize the sound production. Compared with the traditional sound box, the mural sound box belongs to the loudspeaker, but the mural sound box belongs to an ultrathin sound box, and the sound box pronounces sound at 180 degrees on the plane, which is different from the 40-90 degrees of the traditional sound box, so that harmonious and powerful sound can be heard at any position in the listening space.

However, in the sound production process of the mural sound box, due to the structural characteristics of the mural sound box, the thickness of the cavity is insufficient, the flowing of the airflow is affected, and the acoustic performance of the mural sound box is poor.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a mural sound box realizes improving the effect of mural sound box acoustic performance.

The utility model provides a mural sound box, which comprises a canvas, an outer frame and a back plate, wherein the canvas is fixed on the outer frame, and the outer frame and the back plate are buckled to form an accommodating cavity;

two groups of pressure relief holes are arranged, the first group of pressure relief holes are arranged on the first side edge close to the top of the back plate, the second group of pressure relief holes are arranged on the second side edge close to the bottom of the back plate, and the first side edge and the second side edge are oppositely arranged;

the vibration board, the vibration board set up in on the canvas, the vibration board includes first vibration board and second vibration board, first vibration board set up in the top of canvas and being close to the position of second side, first vibration board and first group the position horizontal direction of pressure release hole corresponds, the second vibration set up in the bottom of canvas and being close to the position of first side, second vibration board and second group the position horizontal direction of pressure release hole corresponds, first vibration board with all be provided with the electromagnetic shaker on the second vibration board.

Optionally, the first vibrating plate is a paperboard, and the second vibrating plate is an aluminum plate.

Optionally, the first group of pressure relief holes includes a first opening and a second opening, the first opening is horizontally opened near the top edge of the back plate, and the second opening is vertically opened near the first side edge of the back plate;

the second group the pressure relief hole includes third trompil and fourth trompil, the third trompil is close to the base level of backplate is seted up, the fourth trompil is close to the second side vertical the seting up of backplate.

Optionally, be provided with the fixed bolster on the frame, the fixed bolster with electromagnetic shaker fixed connection fixed bolster includes installation department, linking arm and fixed part, the installation department with the fixed part set up respectively in the both ends of linking arm, the installation department is fixed in on the inside wall of frame, the linking arm to the central line direction level of frame extends, the fixed part internal fixation has the vibrator.

Optionally, a wiring groove is formed in the connecting arm along the extending direction of the connecting arm, and at least one clamping portion is arranged on the connecting arm and close to the wiring groove.

Optionally, the backplate is towards canvas one side is provided with the fire prevention battery case, be provided with the battery in the battery case, the vibrator with the battery passes through the wire and connects, and part the wire passes through joint portion is fixed in the trough.

Optionally, the vibrating plate and the canvas are bonded and fixed through a 3M double-sided adhesive tape, and the thickness of the 3M double-sided adhesive tape is 0.1-0.2 mm.

Optionally, the canvas has a square structure with a length and a width of 50cm, and the vibrating plate has a circular structure with a diameter of 10-20 cm.

Optionally, a control panel is disposed on an outer side of the outer frame, and the control panel is electrically connected to the vibrator.

Optionally, the inner edge of the outer frame is provided with a raised baffle, and the baffle is matched with the outer frame to limit the canvas.

The utility model provides a mural sound box, which comprises a canvas, an outer frame and a back plate, wherein the canvas is fixed on the outer frame, and the outer frame and the back plate are buckled to form an accommodating cavity; two groups of pressure relief holes are arranged, the first group of pressure relief holes are arranged on the first side edge close to the top of the back plate, the second group of pressure relief holes are arranged on the second side edge close to the bottom of the back plate, and the first side edge and the second side edge are oppositely arranged; the vibration board, the vibration board set up in on the canvas, the vibration board includes first vibration board and second vibration board, first vibration board set up in the top of canvas and being close to the position of second side, first vibration board and first group the position horizontal direction of pressure release hole corresponds, the second vibration set up in the bottom of canvas and being close to the position of first side, second vibration board and second group the position horizontal direction of pressure release hole corresponds, first vibration board with all be provided with the electromagnetic shaker on the second vibration board. The two groups of pressure relief holes are formed and matched with the vibration plate, so that the acoustic performance of the mural sound box is improved.

Other features of the present invention and advantages thereof will become apparent from the following detailed description of exemplary embodiments of the invention, which proceeds with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.

FIG. 1 is an exploded view of one embodiment of the present application;

FIG. 2 is a second exploded view of an embodiment of the present application;

FIG. 3 is a front view of a fixing bracket according to an embodiment of the present application;

FIG. 4 is a view showing the reverse side of the fixing bracket in the embodiment of the present application;

FIG. 5 is a schematic structural diagram of an embodiment of the present application;

fig. 6 is a second schematic structural diagram of the embodiment of the present application.

Description of the reference numerals

1. A canvas; 2. an outer frame; 21. a baffle plate; 3. a back plate; 4. fixing a bracket; 41. a fixed part; 42. a connecting arm; 43. an installation part; 44. a wiring groove; 45. a clamping part; 5. a vibrating plate; 6. a vibrator; 7. a fire-proof battery box; 8. a control panel; 9. a pressure relief vent.

Detailed Description

Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: unless specifically stated otherwise, the relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present invention.

The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.

Techniques and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail, but are intended to be considered a part of the specification where appropriate.

In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

The mural sound box provided by the embodiment of the present application is described in detail below with reference to the accompanying drawings through specific embodiments and application scenarios thereof.

As shown in fig. 1 to 6, the mural sound box comprises a canvas 1, an outer frame 2 and a back plate 3, wherein the canvas 1 is fixed on the outer frame 2, and the outer frame 2 and the back plate 3 are buckled to form an accommodating cavity; the canvas 1 may be a painting or a picture, so that the user can enjoy the visual sense and the auditory sense at the same time. Use canvas 1 to be the rectangle, and frame 2 also is the rectangle as an example, when binding canvas 1 on frame 2, bind on frame 2 with one side of canvas 1 earlier, pull canvas 1 through canvas 1 pincers and extend to bind remaining trilateral of canvas 1 on frame 2, finally realize that the tension on canvas 1 reaches 7.5-8.5N/CM. Specifically, the canvas 1 with the tension of 7.5-8.5N/CM can ensure a good vibration effect, wherein the effect is best when the tension of the canvas 1 is 8N/CM, so that the sound transmitted by the wall-drawing sound box is larger, the tone quality is better, and the acoustic performance of the wall-drawing sound box can be improved. Specifically, the chamber that holds that canvas 1, frame 2 and backplate 3 formed is also the sound chamber of mural painting audio amplifier, can provide better three-dimensional surround sound for the mural painting audio amplifier to and promote the tone quality, the acoustic performance of further improvement mural painting audio amplifier.

Two groups of pressure relief holes 9 are arranged, a first group of the pressure relief holes 9 is arranged on a first side edge close to the top of the backboard 3, a second group of the pressure relief holes 9 is arranged on a second side edge close to the bottom of the backboard 3, and the first side edge and the second side edge are oppositely arranged; the pressure relief hole 9 is formed to balance the air pressure in the containing cavity of the mural sound box, so that the acoustic performance of the low frequency of the mural sound box is improved.

Vibration board 5, vibration board 5 set up in on the canvas 1, vibration board 5 includes first vibration board 5 and second vibration board 5, first vibration board 5 set up in the top of canvas 1 and being close to the position of second side, first vibration board 5 and first group the position horizontal direction of pressure release hole 9 corresponds, the second vibration set up in the bottom of canvas 1 and being close to the position of first side, second vibration board 5 and second group the position horizontal direction of pressure release hole 9 corresponds, first vibration board 5 with all be provided with vibrator 6 on the second vibration board 5. The vibrator generates vibration and transmits the vibration to the canvas 1 through the vibrating plate 5, and the canvas 1 vibrates to enable the mural loudspeaker box to emit appointed sound according to the difference of vibration amplitude and frequency. The vibrating plate 5 plays a decisive role in tone color, sound size and sound flatness, and the positional relationship between the vibrating plate 5 and the pressure relief holes 9 is that the first vibrating plate 5 is arranged on the same side of the canvas 1 as the second side edge of the backboard 3, and the first vibrating plate 5 is arranged opposite to the first group of pressure relief holes 9 in the horizontal direction; the canvas 1 is provided with a second vibrating plate 5 on the same side with the first side edge of the back plate 3, and the second vibrating plate 5 is arranged opposite to the second group of pressure relief holes 9 in the horizontal direction. When the vibrator 6 drives first vibration board 5 and the vibration of second vibration board 5, the corresponding vibration of also producing of canvas 1 and sound, the canvas 1 of vibration produces the air current in holding the chamber, and the air current is come in and go out via pressure release hole 9 and is held the chamber to communicate with external atmospheric pressure. Simultaneously first vibration board 5 and the relative horizontal position of second vibration board 5 go up the first group pressure release hole 9 and the second group pressure release hole 9 that set up respectively, when first vibration board 5 and second vibration board 5 are driven by electromagnetic shaker 6 and resonate, first group pressure release hole 9 and the second group pressure release hole 9 can be rapidly for holding in the chamber providing the air, guarantee canvas 1 and can reach predetermined amplitude, thereby send accurate sound, also can balance the atmospheric pressure that holds chamber and mural painting audio amplifier outside as early as possible simultaneously, thereby further improve the effect of mural painting audio amplifier acoustic properties.

Alternatively, the first vibrating plate 5 is a cardboard, and the second vibrating plate 5 is an aluminum plate. By using the vibration and acoustic characteristics of the cardboard and aluminum plates themselves, the first vibrating plate 5 can further optimize the bass effect of the mural sound box, and the second vibrating plate 5 can further optimize the treble effect of the mural sound box.

Optionally, the first group of pressure relief holes 9 includes a first opening and a second opening, the first opening is horizontally opened near the top edge of the backboard 3, and the second opening is vertically opened near the first side edge of the backboard 3; the second group the pressure relief holes 9 include a third opening and a fourth opening, the third opening is close to the horizontal opening of the bottom side of the backboard 3, and the fourth opening is close to the vertical opening of the second side of the backboard 3. First trompil and second trompil correspond with first vibration board 5 horizontal position, and when first vibration board 5 vibrated, first trompil and fourth trompil were the nearest trompil apart from first vibration board 5 to first trompil and fourth trompil also can assist slightly and admit air or exhaust, can provide sufficient air for first vibration board 5 near region rapidly, guarantee that first vibration board 5 can drive canvas 1 and accomplish predetermined amplitude, thereby can send accurate sound. When second vibration board 5 vibrates, second trompil and third trompil are the nearest trompil of distance second vibration board 5, can provide sufficient air for second vibration board 5 near region rapidly to second trompil and third trompil also can assist slightly to admit air or exhaust, guarantee that second vibration board 5 can drive 1 completion of canvas predetermined amplitude, thereby can send accurate sound. When the first vibrating plate 5 and the second vibrating plate 5 vibrate simultaneously, air is rapidly introduced into or exhausted from the first opening, the second opening, the third opening and the fourth opening simultaneously, and the acoustic performance of the wall painting sound box is further improved.

Optionally, be provided with fixed bolster 4 on the frame 2, fixed bolster 4 with 6 fixed connection fixed bolster 4 of electromagnetic shaker include installation department 43, linking arm 42 and fixed part 41, installation department 43 with fixed part 41 set up respectively in the both ends of linking arm 42, installation department 43 is fixed in on the inside wall of frame 2, linking arm 42 to the central line direction level of frame 2 extends, fixed part 41 internal fixation has the vibrator. One end of the fixed support 4 is fixed on the outer frame 2, and the other end of the fixed support 4 faces the direction of the accommodating cavity and is connected with a vibrator; the vibrator is the structure that produces the vibration, and the vibrator is fixed on canvas 1 for a long time, and the weight of vibrator can make the tension of canvas 1 change, can't reach required tension, and canvas 1 also can't vibrate according to predetermined frequency, and the size and the tone quality of corresponding sound all can receive the influence. And the one end of fixed bolster 4 is fixed in on frame 2, can reduce because the weight of vibrator self produces the harmful effects to canvas 1, makes the tensile that canvas 1 can long-time keep the requirement, and further can realize that the wall-drawing audio amplifier keeps better acoustic performance for a long time, improves user's use and experiences.

Specifically, the fixing bracket 4 can give a supporting force in a horizontal direction to the vibrator, and when the fixing portion 41 is fixed to the outer frame 2, the position of the fixing portion 41 is controlled by adjusting the length of the connecting arm 42. After the vibrator is connected with installation department 43, even the vibrator pastes on canvas 1, the weight of vibrator also is born by fixed bolster 4, and the weight of vibrator can not be used in canvas 1, avoids using the mural sound box for a long time to lead to the tension of canvas 1 to reduce. If the tension of the canvas 1 is reduced and can not reach the preset tension value, the canvas 1 can not vibrate according to the preset frequency and amplitude, and the mural loudspeaker box can not emit accurate sound or even sound. Therefore, the tension of the canvas 1 can be maintained for a longer time by additionally arranging the fixing support 4, the acoustic performance of the mural sound box is ensured, and the service life of the mural sound box is prolonged. Specifically, the vibrating plate 5 and the vibrator may be connected by using a ring-shaped M-sided tape, so that the force of the vibrator during the vibration process can be completely transmitted to the vibrating plate 5.

Optionally, a wiring groove 44 is formed in the connecting arm 42 along the extending direction of the connecting arm 42, and at least one clamping portion 45 is disposed on the connecting arm 42 and close to the wiring groove 44. The start-up of vibrator needs power supply, and wire casing 44 and joint portion 45 cooperation can be fixed with the wire of being connected with the vibrator, and when the vibrator during operation, the wire can be comparatively stable fix in wire casing 44, can not take place the wobbling condition, has avoided the appearance of noise.

Optionally, the backplate 3 orientation canvas 1 one side is provided with fire prevention battery case 7, be provided with the battery in the battery case, the vibrator with the battery passes through the wire and connects, and part the wire passes through joint portion 45 is fixed in the trough 44. Set up fire prevention battery case 7 and can make the mural audio amplifier need not to walk the line alone externally, only need place the mural audio amplifier in the position that needs, start the vibrator can, need not external power supply, it is more convenient to use. Part of the wires close to the vibrator are fixed in the wiring groove 44, so that the wires are prevented from being driven by the vibrator to swing in the accommodating cavity to generate abnormal sound, and the rest of the wires can be fixed on the outer frame 2. Meanwhile, the battery in the fireproof battery box 7 can be a rechargeable battery, so that the fireproof battery box is convenient to reuse.

Optionally, the vibrating plate 5 and the canvas 1 are bonded and fixed by a 3M double-sided adhesive tape, and the thickness of the 3M double-sided adhesive tape is 0.1-0.2 mm. The thickness of the double-sided adhesive layer is preferably 0.15M, when the vibrating plate 5 is connected with the canvas 1 through the 3M double-sided adhesive tape, the vibrating plate needs to be static for 15-25s to ensure that the connection between the canvas 1 and the vibrating plate 5 is firm, and the vibration of the vibrator is not transmitted to the canvas 1 to cause excessive loss.

Optionally, the canvas 1 has a square structure with a length and a width of 50cm, and the diameter of the vibrating plate 5 is 10-20 cm. Vibration board 5 is located the position of height difference on canvas 1, and two fixed bolster 4 relative settings, and when canvas 1 is the square of length and width 50cm, and the diameter of vibration board 5 is 15cm, the vibration amplitude of the vibration frequency of vibrator is unchangeable, and the great and high pitch bass effect of volume that the mural audio amplifier sent this moment is best, can improve the acoustic performance of mural audio amplifier.

Optionally, a control panel 8 is disposed on an outer side of the outer frame 2, and the control panel 8 is electrically connected to the vibrator. Control panel 8 is convenient for the user to open and close the mural audio amplifier, can be provided with bluetooth module in the control panel 8 simultaneously, and the user of being convenient for is connected with mural audio amplifier bluetooth through other electronic equipment to select different music to play through electronic equipment, and the user of being convenient for more controls the broadcast of music, closes and switches. Simultaneously, the control panel 8 is also provided with a machine module, a plurality of mural sound boxes are connected with each other through the machine module, and are placed into different rooms, and a song is played simultaneously, so that the use experience of a user can be improved.

Optionally, the back plate 3 is provided with a pressure relief hole 9. . The back plate 3 is provided with a pressure relief hole 9. To increase the diffraction problem of sound waves because the mural sound box vibrates in a wave-like manner. The same back side will generate the same sound pressure (only phase difference) and therefore the pressure relief vent 9 is necessary. To increase the sound radiation and thus have a better directivity without suffering from different sound effects due to different listener positions. While venting the hole 9. The holding cavity of the mural sound box and the external air pressure can be balanced, and the acoustic performance of the mural sound box is further improved.

Optionally, the inner edge of the outer frame 2 is provided with a raised baffle 21, and the baffle 21 and the outer frame 2 are matched to limit the canvas 1. Baffle 21 can set up in the corner department of frame 2 and be used for carrying on spacingly to canvas 1, when being convenient for install, can also further avoid canvas 1 to take place deformation.

Although some specific embodiments of the present invention have been described in detail by way of illustration, it should be understood by those skilled in the art that the above illustration is only for purposes of illustration and is not intended to limit the scope of the invention. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.

Claims

1. A mural sound box is characterized by comprising a canvas, an outer frame and a back plate, wherein the canvas is fixed on the outer frame, and the outer frame and the back plate are buckled to form an accommodating cavity;

2. The mural speaker of claim 1 wherein the first vibrating plate is a cardboard and the second vibrating plate is an aluminum plate.

3. The mural speaker of claim 1 wherein the first set of pressure relief holes comprises a first opening and a second opening, the first opening being horizontally open proximate the top edge of the back plate, the second opening being vertically open proximate the first side edge of the back plate;

4. The mural sound box according to claim 1, wherein the outer frame is provided with a fixing bracket, the fixing bracket and the vibrator fixed connection fixing bracket comprise an installation portion, a connecting arm and a fixing portion, the installation portion and the fixing portion are respectively arranged at two ends of the connecting arm, the installation portion is fixed on the inner side wall of the outer frame, the connecting arm horizontally extends towards the midline direction of the outer frame, and the vibrator is fixed in the fixing portion.

5. The mural sound box of claim 4, wherein a wiring groove is formed on the connecting arm along an extending direction of the connecting arm, and at least one clamping portion is arranged on the connecting arm near the wiring groove.

6. The mural sound box of claim 5, wherein a fireproof battery box is arranged on one side of the back plate facing the canvas, a battery is arranged in the battery box, the vibrator is connected with the battery through a wire, and part of the wire is fixed in the wire distributing groove through the clamping portion.

7. The mural sound box according to claim 1, wherein the vibrating plate is fixed with the canvas by bonding with a 3M double-sided adhesive tape, and the thickness of the 3M double-sided adhesive tape is 0.1-0.2 mm.

8. The mural speaker of claim 1, wherein the canvas has a square configuration with a length and a width of 50cm, and the vibrating plate has a circular configuration with a diameter of 10-20 cm.

9. The mural sound box of claim 1, wherein a control panel is provided at an outer side of the outer frame, and the control panel is electrically connected to the vibrator.

10. The mural sound box of claim 1, wherein the inner edge of the outer frame is provided with a raised baffle, and the baffle cooperates with the outer frame to limit the canvas.