WO2017193603A1

WO2017193603A1 - Anti-coupling sound structure for refrigerator and refrigerator

Info

Publication number: WO2017193603A1
Application number: PCT/CN2016/113924
Authority: WO
Inventors: 吴勇; 党广明; 刘立国; 唐鹰; 曾浩; 王卫庆; 隋承浩
Original assignee: 青岛海尔股份有限公司
Priority date: 2016-05-11
Filing date: 2016-12-30
Publication date: 2017-11-16
Also published as: CN105910376A; EP3441702A1; ES2917196T3; EP3441702A4; EP3441702B1

Abstract

An anti-coupling sound structure (100) for a refrigerator and a refrigerator. Said anti-coupling sound structure (100) comprises: a mounting panel (1) for connecting to a refrigerator door body (4) or a refrigerator body (5), the mounting panel (1) being provided with several through holes (11); and a sound body (2) provided on one side of the back face of the mounting panel (1) and separated, by a gap (6), from the back face of the mounting plate (1), the gap (6) being provided therein with an enclosing portion (3). Said anti-coupling sound structure (100) separates the sound body (2) and the mounting panel (1) from each other, such that the refrigerator is less prone to electrostatic coupling in an electromagnetic compatibility experiment, helping to ensure experiment precision and avoiding the impact on sound quality due to the resonance of the sound body (2) in use with the mounting panel (1); moreover, the sound-converging effect of the enclosing portion (3) can improve the directivity of the sound generated by the sound body (2), achieving a better listening effect.

Description

Anti-coupling sound structure of refrigerator and refrigerator

Technical field

The invention relates to a refrigerator manufacturing technology, in particular to an anti-coupling sound structure of a refrigerator and a corresponding refrigerator.

Background technique

The refrigerator, as a container that keeps the food constant and cold, has become one of the essential household appliances in modern homes. With the rapid development of information technology, users are increasingly demanding the intelligentization of refrigerators.

One of the most important functions of the smart refrigerator is that it can perform human-computer interaction. Playing the voice using the sound structure set in the refrigerator is an important means of human-computer interaction.

The sound structure of the existing refrigerator includes a mounting panel and an audio body, and the sound body is closely attached to the back of the mounting panel, and is fixedly connected by a buckle.

Electromagnetic compatibility experiments (EMC experiments) are an experiment in which various electrical equipment (generalized also including organisms) can coexist under limited space, time, and spectral resources without causing degradation. It includes two parts: electromagnetic interference test and electromagnetic sensitivity test. The electromagnetic interference test tests the strength of the device under test against the surrounding electronic equipment by measuring the size of the electromagnetic wave signal generated by the device under normal working conditions and emitted outward. . The electromagnetic sensitivity test measures the anti-interference ability of the device under test against electromagnetic disturbance.

When the electromagnetic compatibility experiment is carried out in the refrigerator, it is necessary to apply static electricity from the surface of the mounting panel to the acoustic structure. Since the acoustic body in the existing acoustic structure directly contacts the back of the mounting panel, the acoustic body is too close to the surface of the mounting panel, and electrostatic coupling is likely to occur, affecting the experiment. Accuracy is not conducive to product testing.

At the same time, the sound body directly contacts the mounting panel, and the sound body easily resonates with the mounting panel when in use, affecting the sound quality.

In addition, since the acoustic structure of the existing refrigerator does not have a sound collecting structure, the sound emitted by the sound body is relatively divergent, and it is difficult to obtain a good listening effect.

Summary of the invention

It is an object of the present invention to provide an anti-coupling acoustic structure of a refrigerator and a corresponding refrigerator to overcome at least one of the deficiencies of the prior art.

In one aspect, the present invention provides an anti-coupling acoustic structure of a refrigerator, comprising: a mounting panel for connecting with a door body or a cabinet of the refrigerator, the mounting panel having a plurality of through holes; and an acoustic body disposed on the The back side of the mounting panel has a gap between the sound body and the back surface of the mounting panel.

Optionally, the anti-coupling acoustic structure further includes a cylindrical surrounding portion that is open at both ends, and is located between the acoustic body and the mounting panel for improving the directivity of the sounding of the acoustic body.

Optionally, the through hole is disposed at least in a region where the mounting panel is located in the enclosure.

Optionally, the retaining portion extends from a rear surface of the mounting panel to be in contact with a front surface of the acoustic body.

Optionally, the sound body comprises a connecting plate and a horn, the horn is fixed on the connecting plate, and the connecting plate is detachably and fixedly connected to the mounting panel.

Optionally, the horn is disposed at an end opening of the enclosure.

Optionally, an inner diameter of the side of the enclosure adjacent to the horn is greater than or equal to an outer diameter of the horn.

Optionally, the outer edge of the connecting plate is provided with a buckle, the rear surface of the mounting panel is provided with a protruding post, and the protruding post is provided with a screw hole, and the connecting plate passes through the bolt passing through the buckle and the A screw hole is mated to the mounting panel.

Optionally, the gap is 7-10 mm.

Optionally, the mounting panel is embedded on the door or the refrigerator body, and the front surface thereof is located on the same plane as the outer surface of the refrigerator door body or the box body.

In another aspect, the present invention provides a refrigerator including a door body, a case, and an anti-coupling acoustic structure according to the present invention, the mounting panel of the anti-coupling acoustic structure being coupled to a refrigerator door or case.

In the anti-coupling acoustic structure of the present invention, the acoustic body and the mounting panel are spaced apart, so that electrostatic coupling is less likely to occur in the electromagnetic compatibility experiment of the refrigerator, which is beneficial for ensuring experimental precision, and also avoids the installation and installation of the audio body during use. The panel resonance affects the sound quality, and the surrounding portion has the function of gathering sound, which can improve the directivity of the sound emitted by the sound body and obtain a better listening effect.

The above as well as other objects, advantages and features of the present invention will become apparent to those skilled in the <

DRAWINGS

Some specific embodiments of the present invention are described in detail below by way of example, and not limitation. The same reference numbers in the drawings identify the same or similar parts. Those skilled in the art should understand that the drawings are not necessarily drawn to scale. In the figure:

1 is a schematic structural view of a refrigerator equipped with an anti-coupling acoustic structure of a refrigerator provided by the present invention;

2 is a front structural view of an anti-coupling acoustic structure of a refrigerator provided by the present invention;

3 is a schematic rear view showing the structure of an anti-coupling acoustic structure of a refrigerator provided by the present invention;

4 is a side structural view of an anti-coupling acoustic structure of a refrigerator provided by the present invention;

Figure 5 is a cross-sectional structural view of the A-A direction of Figure 3;

Fig. 6 is a partially enlarged schematic view showing a portion A in Fig. 5.

detailed description

The invention will be described in detail below in conjunction with the specific embodiments shown in the drawings. However, the embodiments are not intended to limit the invention, and the structural, method, or functional changes made by those skilled in the art in accordance with the embodiments are included in the scope of the present invention.

It should be noted that the orientations described herein are all referenced to the state in which the acoustic structure is normally installed in the refrigerator. For example, the front surface of the mounting panel, that is, the side surface of the mounting panel facing the outside of the refrigerator, the back surface of the mounting panel, that is, It is the side surface of the mounting panel facing the inside of the refrigerator.

Referring to FIGS. 1 through 6, an anti-coupling acoustic structure 100 of a refrigerator according to some embodiments of the present invention may include a mounting panel 1 for connection with a refrigerator door body 4 or a cabinet 5, and the mounting panel 1 is provided with a plurality of through holes. 11 and the sound body 2 are disposed on the back side of the mounting panel 1 and have a gap 6 between the back surface of the mounting panel 1.

The through hole 11 is for increasing the permeability between the acoustic body 2 and the external environment, and facilitating the sound to be transmitted to the outside. In some embodiments of the invention, holes (generally small holes) are provided through the front and back surfaces of the mounting panel 1.

The audio body 2 and the mounting panel 1 are spaced apart. Since the acoustic body 2 and the mounting panel 1 have a safe distance, an electromagnetic compatibility experiment is performed in the refrigerator, and when static electricity is applied to the front surface of the mounting panel 1, the acoustic body 2 is less likely to be electrostatically coupled, which is beneficial. In order to ensure the experimental accuracy of the electromagnetic compatibility experiment.

At the same time, since the acoustic body 2 is accompanied by vibration during use, the installation of the mounting panel 1 is easy to resonate with the mounting panel 1, affecting the sound quality, and the audio body 2 and the mounting panel 1 are spaced apart. It is beneficial to suppress the resonance and improve the sound quality of the sound structure.

Referring to FIG. 1, in the embodiment, the acoustic structure is disposed on the side of the door body 4 of the refrigerator, and the height is substantially equal to the position of the head when the adult is standing. Thus, the acoustic body 2 can be closer to the user's ear in most usage scenarios, which is beneficial to Get better listening.

In some further embodiments of the present invention, referring to FIG. 5 and FIG. 6, the anti-coupling acoustic structure 100 of the refrigerator further includes a cylindrical enclosure 3 open at both ends between the acoustic body 2 and the mounting panel 1. The directionality of the sound of the acoustic body 2 is improved.

The sound body 2 for the refrigerator is usually powered by a small built-in battery, and the external power is not large. In addition, the sound waves emitted by the sound body 2 are scattered and spread around, and the direction of the sound wave is deviated from the user's position (the user is in the position) The azimuth refers to the height position that the user may be in when the refrigerator is normally used. For example, the sound wave that propagates upwards has to pass through the wall for several times to enter the human ear, and the attenuation is severe, which directly affects the user's listening effect.

After the enclosure 3 is disposed, the sound waves emitted by the acoustic body 2 are reflected and gathered by the inner wall of the enclosure 3, and then propagated outward through the through hole 11 of the mounting panel 1, so that the sound waves are concentrated in the position of the user, which is beneficial to enhance the user's position. Listen to the effect.

Referring to FIG. 2, in some further embodiments of the present invention, the through holes 11 are arranged in an array on the mounting panel 1 and cover a large area of the mounting panel 1. Due to the gathering effect of the surrounding portion 3, most of the sound waves are concentrated in the range of the surrounding portion 3. In other embodiments of the present invention, the through hole 11 may be disposed only in the surrounding portion of the mounting panel 1 The area within 3.

In some further embodiments of the present invention, the enclosure 3 extends from the back of the mounting panel 1 to the front surface of the acoustic body 2, and the enclosure 3 extends from the back of the mounting panel 1, ie, the mounting panel 1 is an integral structure, which can facilitate the injection molding of the retaining portion 3 and the mounting panel 1, and the retaining portion 3 is in contact with the acoustic body 2, and the two are closely matched to form a sound of a single-sided opening (through hole 11 in the mounting panel 1). The structure can prevent the sound waves from leaking from the matching gaps of the surrounding portion 3 and the acoustic body 2. Of course, it is not excluded that the surrounding portion 3 and the mounting panel 1 can also adopt a separate structure in other embodiments of the present invention.

In some further embodiments of the present invention, the sound body 2 includes a connecting plate 21 and a horn 22, the horn 22 is fixed on the connecting plate 21, and the connecting plate 21 and the mounting panel 1 are detachable. Fixed connection. In some further embodiments of the invention, the horn 22 is disposed at an end opening of the enclosure 3 . In some further embodiments of the present invention, the inner diameter of the port of the retaining portion 3 adjacent to the horn 22 is equal to the outer diameter of the horn 22. In In still further embodiments of the present invention, the inner diameter of the port of the enclosure 3 adjacent to the horn 22 may also be larger than the outer diameter of the horn 22, ensuring that the size of the port of the enclosure 3 can cover the horn 22 Just inside.

In some further embodiments of the present invention, the outer edge of the connecting plate 21 is provided with a buckle 23, and the rear surface of the mounting panel 1 is provided with a stud 12, and the stud 12 is provided with a screw hole, and the connecting plate is provided. 21 is coupled to the mounting panel 1 by a bolt passing through the buckle 23 and the screw hole. Compared with the existing snap connection method, the above-mentioned connection manner of the buckle, the bolt and the screw hole is more stable and reliable, and the sound body 2 is not displaced due to the vibration of the sound during the broadcast. The screw hole is disposed on the stud 12, and the acoustic body 2 can be supported by the stud 12 to separate the acoustic body 2 from the mounting panel 1, and the gap 6 is naturally formed.

Moreover, the distance of the gap 6 is too small to prevent the electrostatic coupling effect. If the distance is too large, the overall thickness of the acoustic structure is increased, and more space for the insulation layer of the refrigerator is occupied during installation, which affects the thermal insulation performance of the refrigerator. The gap 6 is preferably 7-10 mm.

In order to make the appearance of the refrigerator more beautiful, and also to facilitate installation and processing, the mounting panel 1 is embedded in the refrigerator door body 4 or the box body 5, and the front surface thereof and the refrigerator door body 4 or the box body 5 are located. The outer surfaces are on the same plane.

According to some embodiments of another aspect of the present invention, there is also provided a refrigerator (shown in FIG. 1) comprising a door body 4, a case 5, and an anti-coupling acoustic structure 100 in accordance with any of the embodiments of the present invention. The mounting panel 1 of the anti-coupling acoustic structure 100 is connected to the refrigerator door body 4 or the casing 5. Preferably, as previously mentioned, the mounting panel 1 can be embedded in the refrigerator door body 4 or the box body 5, and its front surface is in the same plane as the outer surface of the refrigerator door body 4 or the box body 5.

The invention arranges the sound body and the installation panel at intervals, and is not easy to generate electrostatic coupling when the refrigerator is subjected to electromagnetic compatibility experiment, which is beneficial to ensure the experimental precision, and also avoids the resonance of the sound body with the installation panel during use, affecting the sound quality, and the enclosure The part has the function of gathering sounds, which can improve the directivity of the sound emitted by the sound body and obtain a better listening effect.

In this regard, it will be appreciated by those skilled in the <RTIgt;the</RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; The content directly determines or derives many other variations or modifications consistent with the principles of the invention. Therefore, the scope of the invention should be understood and construed as covering all such other modifications or modifications.

Claims

An anti-coupling acoustic structure of a refrigerator, comprising:

a mounting panel for connecting with a door or a cabinet of the refrigerator, wherein the mounting panel is provided with a plurality of through holes;

The sound body is disposed on a back side of the mounting panel and has a gap between the back surface of the mounting panel.
The anti-coupling acoustic structure of claim 1 further comprising:

A cylindrical surrounding portion that is open at both ends is located between the acoustic body and the mounting panel for enhancing the directivity of the sounding of the acoustic body.
The anti-coupling acoustic structure according to claim 2, wherein

The through hole is disposed at least in a region where the mounting panel is located in the enclosure.
The anti-coupling acoustic structure according to claim 2, wherein

The retaining portion extends from a rear surface of the mounting panel to a front surface of the acoustic body.
The anti-coupling acoustic structure according to claim 2, wherein

The sound body includes a connecting plate and a horn, and the horn is fixed on the connecting plate, and the connecting plate is detachably and fixedly connected to the mounting panel.
The anti-coupling acoustic structure according to claim 5, wherein

The horn is disposed at an end opening of the enclosure.
The anti-coupling acoustic structure according to claim 5, wherein

An inner diameter of the side of the enclosure adjacent to the horn is greater than or equal to an outer diameter of the horn.
The anti-coupling acoustic structure according to claim 5, wherein

The outer edge of the connecting plate is provided with a buckle, the rear surface of the mounting panel is provided with a protruding post, and the protruding post is provided with a screw hole, and the connecting plate is coupled with the screw hole through a bolt passing through the buckle On the mounting panel.
The anti-coupling acoustic structure of claim 1 wherein

The gap is 7-10 mm.
The anti-coupling acoustic structure of claim 1 wherein

The mounting panel is embedded on the door or the refrigerator body, and the front surface thereof is located on the same plane as the outer surface of the refrigerator door body or the box body.
A refrigerator comprising a door body, a box body and the anti-coupling acoustic structure according to claim 1, wherein the mounting panel of the anti-coupling acoustic structure is connected to the refrigerator door body or the box body.