CN214315592U - Loudspeaker assembly and terminal equipment - Google Patents
Loudspeaker assembly and terminal equipment Download PDFInfo
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- CN214315592U CN214315592U CN202120383119.7U CN202120383119U CN214315592U CN 214315592 U CN214315592 U CN 214315592U CN 202120383119 U CN202120383119 U CN 202120383119U CN 214315592 U CN214315592 U CN 214315592U
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Abstract
The present disclosure relates to a speaker assembly and a terminal device, the speaker assembly is applied to the terminal device, the speaker assembly includes: a housing including an upper cover plate; the loudspeaker single body is arranged in the shell, and a sound cavity is formed between the loudspeaker single body and the upper cover plate; the upper cover plate is provided with a groove cavity, and the groove cavity is arranged corresponding to the sound cavity and used for adjusting the volume of the sound cavity. Be equipped with the vallecular cavity on the upper cover plate, the vallecular cavity corresponds the setting of sound cavity, changes the volume of sound cavity through setting up the vallecular cavity, and the frequency response of a plurality of speakers is transferred into unanimously, optimizes the hearing effect and the stereo sound of terminal equipment when using scenes such as playing music, watching films outward, and perfect symmetry is realized to a plurality of sound channels about or about, makes the broadcast effect reach about or the sound channel is clear, the sound field effect placed in the middle.
Description
Technical Field
The present disclosure relates to the field of terminal device audio technologies, and in particular, to a speaker assembly and a terminal device.
Background
With the development of society, in order to meet the requirement of users for high sound quality of mobile devices around, the mobile devices are gradually developed from original single speakers to double speakers, and even four speakers appear in devices such as panels which are individually released. The mobile phone is one of the electronic products which accompany the user for the most time, the stereo loudspeaker design is completed on the mobile phone, the requirement of the user on sound space feeling can be preliminarily met, and compared with the traditional single-loudspeaker mobile phone, the stereo mobile phone is greatly improved in tone quality and stereoscopic impression, and the enjoyment of sound beauty is brought to people. However, in the related art, the models, sizes, dimensions, positions, and the like of the plurality of speakers in the terminal device are not consistent, and it is difficult to tune the frequency responses of the two speakers to be consistent, resulting in poor stereo effect.
SUMMERY OF THE UTILITY MODEL
To overcome the problems in the related art, the present disclosure provides a speaker assembly and a terminal device. This is disclosed to the asymmetric problem of frequency response that speaker locating place difference leads to, through optimizing the sound chamber structure, the frequency response test data of terminal equipment speaker are transferred to unanimity, and then reach better stereo effect. The technical scheme is as follows:
according to a first aspect of the embodiments of the present disclosure, there is provided a speaker assembly applied to a terminal device, the speaker assembly including: a housing including an upper cover plate; the loudspeaker single body is arranged in the shell, and a sound cavity is formed between the loudspeaker single body and the upper cover plate; the upper cover plate is provided with a groove cavity, and the groove cavity is arranged corresponding to the sound cavity and used for adjusting the volume of the sound cavity.
In one embodiment, the terminal device is provided with a sound outlet hole corresponding to the loudspeaker component; the terminal equipment is provided with a sound outlet hole corresponding to the loudspeaker component; a sound channel is arranged between the loudspeaker component and the sound outlet hole; the volume of the sound cavity is inversely related to the length of the sound channel.
In one embodiment, the slot cavity is recessed or protruded from the upper cover plate.
In one embodiment, the structure of the slot cavity is columnar, stepped or frustum-shaped, and the shape of the slot cavity is square or circular.
In one embodiment, the slot cavity is in a square column shape, and the length of the slot cavity is 9.5 mm-12.5 mm, the width of the slot cavity is 5.5 mm-8.5 mm, and the height of the slot cavity is 0.1 mm-0.2 mm.
In one embodiment, the slot cavity is in a circular truncated cone shape, and the volume of the slot cavity can be adjusted.
In one embodiment, the slot cavity is formed using a plastic material.
In one embodiment, the device further comprises an adjusting plate, wherein the slot cavity is arranged on the adjusting plate; the upper cover plate is provided with a mounting hole, and the adjusting plate is mounted on the upper cover plate in a forward direction or a reverse direction and covers the mounting hole.
In one embodiment, the number of the sound emitting holes is multiple, and the sound emitting holes are arranged on the front side, the back side and the side of the terminal device.
In one embodiment, an accommodating space is arranged in the shell, the loudspeaker unit is located in the accommodating space and divides the accommodating space into a front sound cavity and a rear sound cavity, and the upper cover plate is arranged at the front sound cavity.
According to a second aspect of embodiments of the present disclosure, there is provided a terminal device comprising one or more speaker assemblies as described in the first aspect.
The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects: be equipped with the vallecular cavity on the upper cover plate, the vallecular cavity corresponds the setting of sound cavity, changes the volume of sound cavity through setting up the vallecular cavity, and the frequency response of a plurality of speakers is transferred into unanimously, optimizes the hearing effect and the stereo sound of terminal equipment when using scenes such as playing music, watching films outward, and perfect symmetry is realized to a plurality of sound channels about or about, makes the broadcast effect reach about or the sound channel is clear, the sound field effect placed in the middle.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.
Fig. 1 is a schematic diagram of two speakers in an associated terminal device;
fig. 2 is another schematic diagram of two speakers in an associated terminal device;
fig. 3 is a top view of a speaker assembly shown in accordance with an exemplary embodiment.
Fig. 4 is a sectional view taken along the plane a-a in fig. 3.
Fig. 5 is a cross-sectional view taken along the plane B-B in fig. 3.
Fig. 6 is an enlarged schematic view of the structure at C in fig. 3.
Fig. 7 is a graph of the frequency response of two speaker assemblies without a cavity.
Fig. 8 is a graph of the frequency response of two speaker assemblies after the placement of the slot cavity.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.
In the mobile terminal device 200 of the conventional stereo scheme, stereo and asymmetric stereo are used, as shown in fig. 1, because the models, positions, and sizes of two speaker assemblies 100 are different, as shown in a frequency response graph of fig. 7, in which the abscissa is frequency Hz, the left ordinate is sound pressure value dBr, and the right ordinate is a deviation angle, the frequency responses of the upper and lower speaker assemblies 100 of the terminal device are different, the sensitivities are different, and the best stereo state is not represented. The higher the coincidence of the frequency response test data of the upper and lower loudspeaker assemblies 100 is, the better the stereo effect is, and like earphones, the left and right sound channels of the earphones are consistent regardless of the structural design or the frequency response test data. And the stereo improvement of the symmetrical loudspeaker cannot realize the same structural design due to the limitation of other internal structures, and the frequency response test data can be adjusted to be consistent only by optimizing the structural design.
According to an embodiment of the present disclosure, there is provided a speaker assembly 100 applied to a terminal device 200, the speaker assembly 100 including: a housing 10; the housing 10 includes an upper cover plate 20; the loudspeaker single body 30 is arranged inside the shell 10, and a sound cavity 50 is formed between the loudspeaker single body 30 and the upper cover plate 20; wherein, the upper cover plate 20 is provided with a slot cavity 40, and the slot cavity 40 is arranged corresponding to the sound cavity 50 and is used for adjusting the volume of the sound cavity 50.
The terminal device 200 may be a mobile phone, a tablet, a notebook, a television, a game machine, and the like. The terminal device 200 has at least two speaker assemblies 100, so that the terminal device 200 can generate stereo sound effect when playing out audio or video.
The housing 10 is a protective casing of the whole speaker assembly 100, the speaker assembly 100 may also be referred to as a horn, all the components of the speaker assembly 100 may be assembled or mounted on the housing 10 or in the housing 10, the structure of the casing enables the speaker assembly 100 to be relatively separated from other structures of the terminal device 200, and simultaneously enables the speaker assembly 100 to be associated with other components of the terminal device 200, so as to form the terminal device 200 together with other components while not affecting the sound production of the speaker. In addition, the housing 10 makes the speaker assembly 100 a relatively independent component, and the housing 10 can protect each component in the speaker assembly 100 from other components of the terminal device 200, thereby preventing other components from adversely affecting the sound emission of the speaker. In addition, the speaker assembly 100 is disposed in the housing 10, so that the speaker assembly 100 is detachably mounted on the terminal device 200, and electrical connection and the like with the terminal device 200 can be realized, which facilitates subsequent detachment, replacement or maintenance. The housing 10 may be a split structure including an upper housing and a lower housing, or a left housing and a right housing, and the shape may also be designed and adjusted according to the structural requirements of other components in the terminal device 200.
The speaker unit 30 refers to a sound generating element in the speaker assembly 100, and the speaker unit 30 converts electrical energy into sound energy, specifically, when an alternating audio current passes through a voice coil of the speaker unit 30, a corresponding magnetic field is generated in the voice coil, and the magnetic field generates an interaction force with a magnetic field generated by a permanent magnet carried on the speaker unit 30. This force then causes the voice coil to vibrate with the audio current in the magnetic field of the speaker unit 30 with its own permanent magnet. And the diaphragm and the voice coil of the speaker unit 30 are coupled together, so that the diaphragm is vibrated. The vibration produces a sound having the same waveform as the original audio signal.
In this embodiment, an accommodating space may be provided in the housing 10, and the speaker unit 30 is located in the accommodating space, and the accommodating space is used for fixing and accommodating the speaker unit 30, so that the speaker unit 30 is relatively separated from other parts of the speaker assembly 100; in addition, the volume of the accommodating space is larger than that of the speaker unit 30, so that after the speaker unit 30 is installed in the accommodating space, redundant cavities are formed between the speaker unit 30 and the accommodating space, the cavities can correct the sound generated by the speaker unit 30, the sound can be full and thick, and the fullness of the sound generated by the speaker is guaranteed.
In this embodiment, the housing 10 may further include an upper cover plate 20, where the upper cover plate 20 is disposed near the accommodating space, so that a sound cavity 50 is formed between the upper cover plate 20 and the speaker unit 30, and specifically, the speaker unit 30 includes a diaphragm, so that the upper cover plate 20 is disposed near the diaphragm of the speaker unit 30, and the upper cover plate 20 may be located right above the diaphragm, that is, parallel to the diaphragm; the diaphragm of the speaker unit 30 may be inclined to form an included angle, so that the structure and volume of the sound cavity 50 formed by the upper cover plate 20 and the speaker unit 30 are not fixed, and are set according to the limitation or requirement of other structures inside the terminal device 200.
After the volume of the sound cavity 50 formed between the upper cover plate 20 and the speaker unit 30 is fixed, the upper cover plate 20 is provided with the slot cavity 40, the slot cavity 40 is arranged corresponding to the sound cavity 50, the volume of the sound cavity 50 is changed by arranging the slot cavity 40, specifically, the slot cavity 40 may be recessed towards the inside of the sound cavity 50, so as to reduce the volume of the sound cavity 50, and the slot cavity 40 may also be protruded towards the outside of the sound cavity 50, so as to increase the volume of the sound cavity 50. The volume of the sound cavities 50 affects the frequency response of the speaker units 30 (the frequency response refers to the degree of gain or level of sound output by the speaker at different frequency points in a given frequency range, and the frequency response can be expressed by the high-frequency resonant frequency), and each sound cavity 50 corresponds to one tank cavity 40, when the terminal device 200 is provided with a plurality of speaker assemblies 100, there are a plurality of speaker units 30, each speaker unit 30 is provided with one upper cover plate 20, and each upper cover plate 20 is provided with one tank cavity 40, therefore, the arrangement of the tank cavity 40 at each sound cavity 50 changes the volume of each sound cavity 50, further changes the high-frequency resonant frequency of each speaker unit 30, so as to tune the high-frequency resonant frequencies of the speaker units 30 to be uniform, and the frequency response is the same, thereby optimizing the auditory effect and stereo sound of the terminal device 200 when using scenes of playing music, watching movies, etc., the sound channels on the left and right or up and down are perfectly symmetrical, so that the playing effect is clear and the sound field is centered.
The upper cover 20 may be provided on the housing 10 and integrated with the housing 10, may be provided on the housing 10 so as to be separable from the housing 10, or may be provided separately from the housing 10 and inside the housing 10.
In one embodiment, the terminal device 200 is provided with a sound outlet hole 60 corresponding to the speaker assembly 100; an acoustic channel 70 is arranged between the loudspeaker assembly 100 and the sound outlet 60; the volume of the acoustic chamber 50 is inversely related to the length L of the acoustic channel 70.
In the present embodiment, the terminal device 200 is provided with sound outlet holes 60 corresponding to the speaker assembly 100, that is, the sound emitted from the speaker unit 30 is finally emitted out of the terminal device 200 through the sound outlet holes 60 on the terminal device 200, and the number of the sound outlet holes 60 on the terminal device 200 may be one or more, and in the present embodiment, the number of the sound outlet holes 60 is plural. The sound emitting holes 60 may be provided on the front, back, lower, upper, left, and right sides of the terminal device 200, in other words, the number and position of the sound emitting holes 60 are not fixed, and the sound emitting holes 60 are provided on the terminal device 200 according to the number and position of the speaker assemblies 100.
As described above, the sound channel 70 is provided between the speaker assembly 100 and the sound outlet hole 60, the sound channel 70 transmits the sound generated by the speaker assembly 100 to the sound outlet hole 60, and the sound passes through the sound outlet hole 60 to the outside of the terminal device 200, and the sound generating unit in the speaker assembly 100 is the speaker unit 30, and the speaker unit 30 is located in the accommodating space, so that one end of the sound channel 70 is communicated with the sound outlet hole 60, the other end of the sound channel 70 is communicated with the accommodating space, and the accommodating space is communicated with the sound outlet hole 60 through the sound channel 70; in one embodiment, since the volume of the speaker unit 30 is smaller than the volume of the accommodating space, and the speaker unit 30 is accommodated in the accommodating space, the accommodating space still has redundant cavities, so the speaker unit 30 can divide the accommodating space into a front sound cavity and a rear sound cavity, that is, the redundant cavities are divided into two parts, wherein the front sound cavity is a cavity corresponding to one side of a diaphragm of the speaker unit 30, the rear sound cavity is a cavity corresponding to the opposite side of the diaphragm of the speaker unit 30, the side wall of the speaker unit 30 is attached to the inner wall of the accommodating space so that the front sound cavity is not communicated with the rear sound cavity, and the front sound cavity is a cavity corresponding to one side of the diaphragm of the speaker unit 30, so that sound can be transmitted out through the sound channel 70, the front sound cavity is communicated with the sound channel 70, and the rear sound cavity is not communicated with the sound channel 70; in the present embodiment, the sound chamber 50 refers to the front sound chamber described above. It will be understood by those skilled in the art that although the present embodiment illustrates the acoustic cavity 50 as a front acoustic cavity, by varying the volume of the front acoustic cavity, the frequency response is varied such that the frequency responses of the plurality of speaker assemblies are the same or close. But the technical scheme aiming at changing the volume of the front sound cavity can also be applied to the technical scheme of changing the volume of the rear sound cavity, namely, the groove cavity arranged on the upper cover plate is arranged corresponding to the rear sound cavity and is used for changing the volume of the rear sound cavity.
In addition, when two or more speaker assemblies 100 are provided on the terminal device 200, the terminal device 200 will also be provided with two or more sound channels 70, i.e., one and only one speaker assembly 100 for each sound channel 70. The sound outlet holes 60 communicated with one end of the sound channel 70 may be a large sound outlet hole 60 provided on the terminal device 200, or may be a plurality of small sound outlet holes 60, and the arrangement of the plurality of sound outlet holes 60 corresponding to one sound channel 70 may be a transverse arrangement on the front, back, upper side or lower side of the terminal device 200, or a longitudinal arrangement on the front, back, left side or lower side of the terminal device 200, or a centralized arrangement in any shape such as triangle, circle, square, etc.
The volume of the sound cavity 50 is negatively correlated with the length L of the sound channel 70, specifically, as can be seen from the above, the sound cavity 50 is a front sound cavity, and the front sound cavity is communicated with the sound channel 70, therefore, in this embodiment, the volume of the front sound cavity is negatively correlated with the length L of the sound channel 70, the front sound cavity mainly affects the high-frequency resonant frequency of sound, and the larger the volume of the front sound cavity is, the better the high-frequency performance of the speaker unit 30 is; the rear acoustic cavity mainly affects the low frequency resonance frequency of sound, and the larger the rear acoustic cavity volume is, the better the low frequency performance of the speaker unit 30 is. The relationship between the volume of the acoustic chamber 50 and the resonant frequency of the high frequency can be expressed by the following equation: fhOc S/VL, wherein oc represents a proportional symbol; fhA high frequency resonant frequency representing a frequency response; s represents the area of the sound hole 60; v represents the volume of the anterior acoustic chamber; l denotes the length of the sound channel 70. As can be seen from the formula, if the high frequency performance of the speaker unit 30 is desired to be good, the length L of the sound channel 70 is short, and the length L of the sound channel 70 is long, the high frequency performance of the speaker unit 30 is affected, however, due to the structure of the terminal device 200 itself, the size of the internal space, and the position and shape of other internal components, the position of the speaker assembly 100 and the sound outlet hole 60 in the terminal device 200 and the area of the sound outlet hole 60 are fixed, and therefore, the length L of the sound channel 70 between the speaker assembly 100 and the sound outlet hole 60 is also fixed, and when the terminal device 200 has a plurality of speaker assemblies 100, the types, sizes, and positions on the terminal device 200 of the plurality of speaker assemblies 100 are different, and the high frequency resonant frequencies of the plurality of speaker assemblies 100 are different, the frequency responses are different, and the best stereo state is not presented, if the frequency response of a plurality of loudspeakers is consistent and the stereo sound is better displayed, only the frequency response can be changedThe volume of the acoustic chamber 50, i.e. the volume of the acoustic chamber before modification.
In one embodiment, the slot cavity 40 is recessed or raised from the upper cover plate 20.
As can be seen from the above, the purpose of the slot cavity 40 is to adjust the volume of the sound cavity 50, i.e. to adjust the volume of the front sound cavity, and the volume of the adjusted sound cavity 50 includes the volume of the front sound cavity to be adjusted larger and the volume of the front sound cavity to be adjusted smaller, and furthermore, since the slot cavity 40 is disposed on the upper cover plate 20, the slot cavity 40 can be recessed in the upper cover plate 20 to adjust the volume of the front sound cavity to be adjusted smaller; or may be protruded from the upper cover plate 20 for increasing the volume of the front sound cavity.
When the cavity 40 is recessed in the upper cover plate 20, the volume of the front acoustic cavity becomes smaller according to the formula Fhalpha.S/VL, the high-frequency resonance frequency FhEnlarging; when the slot cavity 40 protrudes from the upper cover plate 20, the volume of the front sound cavity becomes larger according to the formula Fhalpha.S/VL, the high-frequency resonance frequency FhAnd becomes smaller.
Assume that two speaker assemblies 100 are provided on the terminal device 200: first speaker assembly 101 and second speaker assembly 102, as shown in fig. 2, the first speaker assembly 101 and second speaker assembly 102 are both located on the front side of the terminal device 200, the first speaker assembly 101 is located on the upper portion of the terminal device 200, the second speaker assembly 102 is located on the lower portion of the terminal device 200, the two speaker assemblies 100 have the same model and size, the number, area and position of the sound outlet holes 60 are the same, the positions on the terminal device 200 are also vertically symmetrical, the only difference is that the distances from the two speaker assemblies 100 to the sound outlet holes 60 of the terminal device 200 are different, that is, the length L of the sound channel 70 is different, wherein the length of the sound channel 70 of the first speaker assembly 101 is L1, the length of the sound channel 70 of the second speaker assembly 102 is L2, and the length of L1 is greater than the length of L2. Therefore, when the high-frequency resonance frequency F of the first speaker unit 101 and the second speaker unit 102 is desired to be sethIf the volume of the front sound cavity of the first speaker assembly 101 is adjusted to be smaller and/or the volume of the front sound cavity of the second speaker assembly 102 is adjusted to be larger, the volume of the front sound cavity of one speaker assembly 100 can be increased, so as to reduce the high frequency of the speaker assembly 100Resonant frequency FhTo the high-frequency resonant frequency F of the other speaker assembly 100hReach a consistency or approach; depressions may also be used to reduce the volume of the front acoustic chamber of one of the speaker assemblies 100, thereby increasing the high frequency resonant frequency F of that speaker assembly 100hUnder the condition of ensuring the original assembly space not to be changed, as shown in fig. 8, the high-frequency resonant frequency F of the two speaker assemblies 100 is enabledhIdentical or approaching. In fig. 8, the abscissa is frequency Hz, the left ordinate is sound pressure value dBr, and the right ordinate is a deviation angle.
Specifically, the volume of the front sound cavity of the first speaker assembly 101 can be adjusted to be small, and the volume of the front sound cavity of the second speaker assembly 102 is not changed; or the volume of the front sound cavity of the second speaker assembly 102 can be increased with the volume of the front sound cavity of the first speaker assembly 101 unchanged; or the volume of the sound cavity in front of the first speaker assembly 101 may be adjusted smaller while the volume of the sound cavity in front of the second speaker assembly 102 is adjusted larger. It should be noted that the volumes of the first speaker assembly 101 and the second speaker assembly 102 may also be adjusted smaller or the volumes of the first speaker assembly 101 and the second speaker assembly 102 may also be adjusted larger; when tuned simultaneously, the tuned volume of the front acoustic cavity in the first speaker assembly 101 is larger than the tuned volume of the front acoustic cavity in the second speaker assembly 102; when tuned up simultaneously, the volume of the front sound cavity in the first speaker assembly 101 is smaller than the volume of the front sound cavity in the second speaker assembly 102. When the length of the sound channel 70 of the first speaker assembly 101 is L1 less than the length of the sound channel 70 of the first speaker assembly 101, L2, the volume of the sound cavity in front of the first speaker assembly 101 and the second speaker assembly 102 is adjusted in contrast to when L1 is greater than L2, which will not be described in detail herein.
From the technical aspect, under the condition that the height of the front sound cavity is not influenced, the volume of the front sound cavity can be changed by only arranging the groove cavity 40 on the upper cover plate 20, so that the high-frequency resonance frequency of the sound cavity emitted by the loudspeaker single body 30 is changed, and the frequency responses among the loudspeaker assemblies 100 are the same; from the structural and technological aspects, the slot cavity 40 has a simple structure, is easy to arrange on the upper cover plate 20, and has low and uncomplicated technological difficulty.
In one embodiment, the configuration of the chamber 40 is cylindrical, stepped or frustoconical, and the chamber 40 is square or circular in shape.
The structure of the cavity 40 needs to be explained in two aspects, namely, the upper cover plate 20 is parallel to the diaphragm of the speaker unit, and the upper cover plate 20 is inclined to the diaphragm of the speaker unit.
When the upper cover plate 20 is parallel to the single diaphragm of the speaker, the structure of the cavity 40 is a cylindrical structure, which means that the area and the shape of the opening end and the bottom end of the cavity 40 are the same, and when the cavity 40 is a cylindrical structure, the cavity may be a cylindrical structure, a square column, a rhombic column, a triangular column, or an irregular cylindrical structure designed according to the restriction of other parts in the internal space of the terminal device 200.
The stepped structure of the slot cavity 40 means that the slot cavity 40 is multi-stage and stepped, the cross section of each stage has the same shape, the height can be the same or different, and the area of the opening end and the bottom end of each stage can be the same or different; when the cavity 40 is stepped, the cross-section of the cavity 40 may be circular, square, diamond, triangular, or irregular shaped according to the limitations of other components in the internal space of the terminal device 200.
The frustum-shaped structure of the slot cavity 40 means that the opening end and the bottom end of the slot cavity 40 have the same shape, but different areas, and the bottom end of the slot cavity 40 is also a plane; when the slot 40 is frustum-shaped, the cross section of the slot 40 may be circular, square, diamond, triangle, or irregular structure designed according to the limitation of other parts in the internal space of the terminal device 200.
When the upper cover plate 20 is inclined to the diaphragm of the speaker unit; besides the three structures, the structure of the chamber 40 can also be tapered, that is, the bottom or top of the chamber 40 is pointed.
It should be noted that the shape and structure of the slot cavity 40 listed above are only exemplary and cannot be used to limit the technical solution of the present disclosure, and those skilled in the art should understand that, within the scope of the technical solution of the present disclosure, the shape or volume of the slot cavity 40 and the overall structure of the slot cavity 40 are modified, and any design of the slot cavity 40 with adjustable front sound cavity volume is included in the protection scope of the present disclosure.
In one embodiment, the chamber 40 is a square column, and the chamber 40 has a length of 9.5mm to 12.5mm, a width of 5.5mm to 8.5mm, and a height of 0.1mm to 0.2 mm.
As shown in fig. 3 to 6, the cavity 40 is a groove recessed in the upper cover plate 20, the cavity 40 may be square-column-shaped, and the cross section of the cavity is rectangular, that is, the opening end and the bottom end of the cavity 40 are both rectangular, the length of the cavity 40 may range from 9.5mm to 12.5mm, the width may range from 5.5mm to 8.5mm, and the height may range from 0.1mm to 0.2 mm. In this embodiment, as shown in FIG. 6, the length of the slot 40 is 10.86mm, the width of the slot 40 is 6.86mm, and the height of the slot 40 is 0.15mm (as shown in FIG. 4).
It should be noted that the above-mentioned size range of the slot cavity 40 is only exemplary and is not used to limit the technical solution of the present disclosure, and it should be understood by those skilled in the art that the size range of the slot cavity 40 can be adjusted within the technical solution of the present disclosure without affecting the height of the front sound cavity, and all that is included in the protection scope of the present disclosure.
In one embodiment, the pocket 40 is frustoconical, and the volume of the pocket 40 is adjustable.
In the present embodiment, the cavity 40 is truncated cone-shaped, which means that the opening end and the bottom end of the cavity 40 are both circular, but the circular area of the opening end is larger than that of the bottom end, and the bottom end is a plane. The volume of the slot cavity 40 can be adjusted, that is, the slot cavity 40 is formed by sequentially connecting a plurality of annular round tables, when the slot cavity 40 is recessed in the upper cover plate 20, it is assumed that one end away from the front sound cavity is the upper side, one end close to the front sound cavity is the lower side, the opening end of each annular round table is gradually reduced towards the vibrating diaphragm direction of the front sound cavity by the upper cover plate 20, between two adjacent annular round tables, the area of the bottom end of the annular round table positioned above is larger than the area of the opening end of the annular round table positioned below, that is, the annular round table positioned below can be sleeved inside the annular round table positioned above, and similarly, the annular round table positioned below can be sleeved on the annular round table positioned above, and then the annular round tables positioned above and adjacent to each other are sequentially sleeved until the annular round tables positioned above are accommodated.
According to the structure, the number of layers of the annular truncated cone sleeves can be selected according to the difference of the lengths L of the sound channels 70 among the loudspeaker assemblies 100, the volume of the groove cavity 40 can be adjusted, the volume of the front sound cavity in the loudspeaker assemblies 100 can be flexibly adjusted through the structural design, the groove cavity 40 with the structure is arranged on the upper cover plate 20, the upper cover plate 20 is not required to be independent according to the model and the size of one loudspeaker assembly 100, the universality is strong, and the cost is saved.
When the cavity 40 is protruded on the upper cover plate 20, the principle and the working process have been described in detail when the cavity 40 is recessed on the upper cover plate 20, which is contrary to the case when the cavity 40 is recessed on the upper cover plate 20, and thus the description thereof is omitted.
In one embodiment, the slot cavity 40 is formed from a plastic material.
The plastic material means: under the action of external force, although the material is deformed more significantly without being damaged. The chamber 40 may be made of a plastic material such as steel, copper, and aluminum alloys. Metal structure is stable, and tensile strength and crushing resistance are strong, and non-deformable keeps the volume size of slot 40 stable to the stable volume in preceding sound chamber has been guaranteed, and then has guaranteed the uniformity between the high frequency resonance frequency between a plurality of speaker subassembly 100.
In one embodiment, the slot cavity 40 is a round bottom arc structure, and since the slot cavity 40 is made of plastic material, when the slot cavity 40 is protruded on the upper cover plate 20, the bottom of the slot cavity 40 is pressed, and the slot cavity 40 is elastically deformed from being protruded on the upper cover plate 20 to being recessed in the upper cover plate 20; when the cavity 40 is protruded from the upper cover plate 20, and also pushes up the bottom of the cavity 40, the cavity 40 is elastically deformed to become protruded from the upper cover plate 20 as being concaved inward from the upper cover plate 20. The slot cavity 40 made of the material increases the universality of the slot cavity 40, can be used on the loudspeaker assembly 100 needing to increase the volume of the front sound cavity, and can also be used on the loudspeaker assembly 100 needing to reduce the volume of the front sound cavity, and the slot cavity 40 has strong replaceability and is convenient to replace; and the volume of the front sound cavity can be increased or reduced by pressing, and the operation is convenient.
In one embodiment, a regulating plate is also included, with the slot cavity 40 disposed therein; the upper cover plate 20 is provided with mounting holes, and an adjustment plate is mounted to the upper cover plate 20 in a forward or reverse direction and covers the mounting holes.
In this embodiment, the adjustable fixing device further comprises an adjusting plate, a slot 40 is formed in the adjusting plate, a mounting edge is arranged at the opening end of the slot 40, a hole penetrating through the upper cover plate 20 is formed in a mounting hole in the upper cover plate 20, and the radial size of the mounting edge is larger than that of the mounting hole, so that the mounting hole of the upper cover plate 20 can be covered by the adjusting plate. When the adjusting plate is installed on the upper cover plate 20, the bottom end of the groove cavity 40 of the adjusting plate can pass through the installation hole, and the installation edge of the adjusting plate located at the opening end of the groove cavity 40 covers the installation hole, so that sound emitted by the loudspeaker unit 30 is prevented from leaking, and finally, the installation edge of the adjusting plate is fixed with the upper cover plate 20. If the volume of the front acoustic cavity in a loudspeaker assembly 100 needs to be reduced, the open end of the cavity 40 is not connected to the front acoustic cavity, i.e. the open end of the cavity 40 is the end away from the diaphragm of the front acoustic cavity. The bottom end of the tank cavity 40 is made to be one end close to the front acoustic cavity vibrating diaphragm; if the volume of the front acoustic cavity in one speaker assembly 100 needs to be increased, the open end of the slot cavity 40 is communicated with the front acoustic cavity, even if the open end of the slot cavity 40 is the end close to the front acoustic cavity vibrating diaphragm, the bottom end of the slot cavity 40 is the end far away from the front acoustic cavity vibrating diaphragm.
When the open end of the groove cavity 40 is the end far away from the front acoustic cavity diaphragm, at this time, the open end of the groove cavity 40 is not communicated with the front acoustic cavity, and the groove cavity 40 is a groove recessed on the upper cover plate 20, so that the volume of the front acoustic cavity is reduced; when the volume of sound chamber before needs increase, the regulating plate that will be used for installing slot chamber 40 is dismantled from upper cover plate 20, overturns the regulating plate, and the open end of slot chamber 40 becomes the one end that is close to preceding sound chamber vibrating diaphragm, and the open end and the preceding sound chamber intercommunication of slot chamber 40 then the slot chamber 40 is protruding to be located upper cover plate 20 this moment, has consequently increased the volume in preceding sound chamber, and the structure that sets up of regulating plate has further increased the commonality of slot chamber 40.
Based on the same concept, the embodiment of the present disclosure also provides a terminal device 200 including one or more speaker assemblies 100 as described above.
With regard to the apparatus of the above-described embodiment, the specific structure, connection manner and operation manner of the respective components have been described in detail in relation to the embodiment of the speaker assembly 100, and will not be described in detail herein.
The speaker assembly 100 of the present disclosure is disposed in the terminal device 200, and the volume of the front acoustic cavity can be changed by adding the groove cavity 40 with a height difference on the upper cover plate 20, so as to tune the high-frequency resonant frequency between two or more speaker assemblies 100 to be consistent, thereby achieving a better stereo effect.
It is understood that "a plurality" in this disclosure means two or more, and other words are analogous. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship. The singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
It will be further understood that the terms "first," "second," and the like are used to describe various structures, but these structures should not be limited by these terms. These terms are only used to distinguish one type of structure from another and do not denote a particular order or importance. Indeed, the terms "first," "second," and the like are fully interchangeable. For example, the first speaker assembly 101 may also be referred to as the second speaker assembly 102, and similarly, the second speaker assembly 102 may also be referred to as the first speaker assembly 101, without departing from the scope of the present disclosure.
It will be further understood that the terms "central," "longitudinal," "lateral," "front," "rear," "upper," "lower," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings for convenience in describing the present embodiment and to simplify the description, but do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation.
It will be further understood that, unless otherwise specified, "connected" includes direct connections between the two without the presence of other elements, as well as indirect connections between the two with the presence of other elements.
It is further to be understood that while operations are depicted in the drawings in a particular order, this is not to be understood as requiring that such operations be performed in the particular order shown or in serial order, or that all illustrated operations be performed, to achieve desirable results. In certain environments, multitasking and parallel processing may be advantageous.
Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.
It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.
Claims (10)
1. A speaker assembly, for use with a terminal device, the speaker assembly comprising:
a housing including an upper cover plate;
the loudspeaker single body is arranged in the shell, and a sound cavity is formed between the loudspeaker single body and the upper cover plate;
the upper cover plate is provided with a groove cavity which is sunken in or protrudes out of the upper cover plate, and the groove cavity corresponds to the sound cavity and is used for adjusting the volume of the sound cavity.
2. The speaker assembly according to claim 1, wherein the terminal device is provided with a sound outlet hole corresponding to the speaker assembly; a sound channel is arranged between the loudspeaker component and the sound outlet hole; the volume of the sound cavity is inversely related to the length of the sound channel.
3. The loudspeaker assembly of claim 1 wherein the structure of the tank cavity is cylindrical, stepped or frustoconical and the tank cavity is square or circular in shape.
4. The loudspeaker assembly of claim 3 wherein the chamber is square cylindrical, the chamber having a length of 9.5mm to 12.5mm, a width of 5.5mm to 8.5mm, and a height of 0.1mm to 0.2 mm.
5. A loudspeaker assembly according to claim 3, wherein the chamber is frustoconical, the volume of the chamber being adjustable.
6. A loudspeaker assembly according to any one of claims 1 to 5, wherein the cavity is formed from a plastics material.
7. The loudspeaker assembly of any one of claims 1 to 5, further comprising a tuning plate, the slot cavity being disposed on the tuning plate; the upper cover plate is provided with a mounting hole, and the adjusting plate is mounted on the upper cover plate in a forward direction or a reverse direction and covers the mounting hole.
8. The speaker assembly as claimed in claim 2, wherein the number of the sound outlet holes is plural, and the sound outlet holes are provided on the front, back and side surfaces of the terminal device.
9. The loudspeaker assembly of claim 1, wherein a receiving space is provided in the housing, the single loudspeaker is located in the receiving space and divides the receiving space into a front sound cavity and a rear sound cavity, and the upper cover plate is disposed at the front sound cavity.
10. A terminal device, characterized in that it comprises one or more loudspeaker assemblies according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120383119.7U CN214315592U (en) | 2021-02-20 | 2021-02-20 | Loudspeaker assembly and terminal equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120383119.7U CN214315592U (en) | 2021-02-20 | 2021-02-20 | Loudspeaker assembly and terminal equipment |
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| CN214315592U true CN214315592U (en) | 2021-09-28 |
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| CN202120383119.7U Active CN214315592U (en) | 2021-02-20 | 2021-02-20 | Loudspeaker assembly and terminal equipment |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114040276A (en) * | 2021-10-13 | 2022-02-11 | 深圳市冠旭电子股份有限公司 | Sound equipment |
| CN114157738A (en) * | 2021-11-29 | 2022-03-08 | 宜宾邦华智慧科技有限公司 | Mobile phone with sound cavity structure and 3D sound quality |
-
2021
- 2021-02-20 CN CN202120383119.7U patent/CN214315592U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114040276A (en) * | 2021-10-13 | 2022-02-11 | 深圳市冠旭电子股份有限公司 | Sound equipment |
| CN114157738A (en) * | 2021-11-29 | 2022-03-08 | 宜宾邦华智慧科技有限公司 | Mobile phone with sound cavity structure and 3D sound quality |
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