In-ear earphone

Abstract

The utility model provides an in-ear earphone, and relates to the technical field of earphones. The in-ear earphone comprises a housing, a flat panel loudspeaker and an auxiliary diaphragm. The housing has a front end and a rear end. The flat panel loudspeaker is arranged in the shell and divides an inner cavity of the shell into a front cavity close to the front end and a rear cavity close to the rear end; the auxiliary vibrating diaphragm is arranged in the rear cavity, and the auxiliary vibrating diaphragm and the flat panel loudspeaker are arranged at intervals. When the in-ear earphone is used, the flat panel loudspeaker pushes air in the rear cavity to move towards the rear end of the shell, so that the auxiliary vibrating diaphragm moves backwards, and the auxiliary vibrating diaphragm becomes a sound load of the flat panel loudspeaker. Due to the existence of the load, the sound order and the sound quality are greatly improved, so that the bass is enhanced. When the bass dynamic state is large, the air in the rear cavity is not compressed, so that the radiation area of the flat panel loudspeaker and the radiation area of the auxiliary diaphragm can be calculated through superposition. According to the sound radiation principle of the loudspeaker, after the radiation area is increased, the low frequency can better dive, the linear amplitude is reduced, and the bass is enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of earphones, in particular to an in-ear earphone. Background Art

[0002] In-ear headphones are often designed to be relatively small for wearing comfort. However, if the diameter of the flat speaker inside the headphones is too small, the diaphragm's sound efficiency will be low, the low-frequency lower limit will be limited, and the sound quality will not meet the requirements. Although increasing the diameter of the flat speaker can solve this problem, it will cause the flat speaker with a double-sided magnetic structure to be larger in size, affecting the wearing experience. Utility Model Content

[0003] In order to solve the problems existing in the prior art, the purpose of the utility model is to provide an in-ear earphone.

[0004] The utility model provides the following technical solutions:

[0005] An in-ear headset, comprising:

[0006] The housing has a front end close to the human body and a rear end away from the human body when worn;

[0007] A flat panel speaker, the flat panel speaker is disposed in the housing and divides the inner cavity of the housing into a front cavity near the front end and a rear cavity near the rear end; and

[0008] A secondary diaphragm is arranged in the rear cavity and spaced apart from the flat panel speaker.

[0009] As a further optional solution for the in-ear earphone, the housing includes a first shell and a second shell connected to each other, the inner diameter of the first shell is greater than the inner diameter of the second shell, and the first shell has the rear end;

[0010] The sub-diaphragm is arranged in the first shell, and the flat panel speaker is arranged in the second shell.

[0011] As a further optional solution for the in-ear earphone, an annular step portion is provided at one end of the first shell close to the second shell, and the first shell is connected to the second shell via the step portion;

[0012] A fixing ring is arranged on the outer periphery of the auxiliary diaphragm. The fixing ring is embedded in the first shell and abuts against the inner wall of the first shell and the step portion respectively.

[0013] As a further optional solution for the in-ear earphone, the in-ear earphone further includes a sound damping component, which is arranged in the housing and located on a side of the secondary diaphragm facing away from the flat speaker.

[0014] As a further optional solution for the in-ear headphone, the flat speaker includes a main diaphragm and a magnet, the main diaphragm is parallel to the secondary diaphragm, and the magnets are arranged in pairs on both sides of the main diaphragm along the thickness direction.

[0015] As a further optional solution for the in-ear headset, the flat speaker further includes a first bracket and a second bracket connected to each other, a first accommodating groove is provided on a side of the first bracket facing the second bracket, and a second accommodating groove is provided on a side of the second bracket facing the first bracket;

[0016] The main diaphragm is clamped and fixed between the first bracket and the second bracket, the magnet located on one side of the main diaphragm is embedded in the first receiving groove, and the magnet located on the other side of the main diaphragm is embedded in the second receiving groove.

[0017] As a further optional solution for the in-ear headphones, the flat-panel speaker also includes gaskets, which are arranged in pairs on both sides of the main diaphragm along the thickness direction, and the gaskets are located on the periphery of the magnet, and the first bracket and the second bracket clamp and fix the main diaphragm through the gaskets.

[0018] As a further optional solution for the in-ear headset, a first latch is provided on a side of the first bracket facing the second bracket, the first latch penetrates the second bracket and is interference-fitted with the second bracket; and / or

[0019] A second latch is disposed on a side of the second bracket facing the first bracket. The second latch penetrates the first bracket and is interference-fitted with the first bracket.

[0020] As a further optional solution for the in-ear headphones, the flat-panel speaker further includes a sleeve, wherein the sleeve is sleeved on the first bracket and the second bracket, and the sleeve is embedded in the outer shell and abuts against an inner wall of the outer shell.

[0021] As a further optional solution for the in-ear earphone, the in-ear earphone further includes an elastic sleeve, and the elastic sleeve is arranged on the front end.

[0022] The embodiments of the present utility model have the following beneficial effects:

[0023] In the above-mentioned in-ear headphones, a flat-panel speaker and a sub-diaphragm are arranged in the shell at intervals, and the sub-diaphragm is located in the rear cavity formed by the inner cavity of the shell being separated by the flat-panel speaker. The flat-panel speaker pushes the air in the rear cavity to move toward the rear end of the shell, causing the sub-diaphragm to move backward as well, and the sub-diaphragm becomes the acoustic load of the flat-panel speaker. Because of the existence of the load, the acoustic compliance and sound quality are greatly increased, thereby enhancing the bass. When the bass is dynamic, the air in the rear cavity will not be compressed, so the radiation areas of the flat-panel speaker and the sub-diaphragm can be calculated superimposed. According to the principle of sound radiation of the speaker, after the radiation area increases, the low frequency will get a better dive, the linear amplitude will decrease, and the bass will be enhanced. Therefore, the above-mentioned in-ear headphones can enhance the bass without affecting the wearing comfort.

[0024] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and understandable, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 The overall structure diagram of an in-ear earphone provided by an embodiment of the utility model is shown;

[0027] Figure 2 A schematic diagram of the internal structure of an in-ear earphone provided by an embodiment of the utility model is shown;

[0028] Figure 3 A schematic structural diagram of a housing of an in-ear earphone provided by an embodiment of the utility model is shown;

[0029] Figure 4 An exploded schematic diagram of a flat speaker in an in-ear headset provided by an embodiment of the utility model is shown;

[0030] Figure 5 A schematic diagram of an explosion of a flat-panel speaker in an in-ear headset provided by an embodiment of the utility model from another viewing angle is shown.

[0031] Description of main component symbols:

[0032] 100-housing; 101-front end; 102-rear end; 103-front cavity; 104-rear cavity; 110-first shell; 111-mounting groove; 112-step portion; 120-second shell; 130-third shell; 140-fourth shell; 200-flat speaker; 210-main diaphragm; 220-magnet; 230-first bracket; 231-first accommodating groove; 232-first through hole; 233-first latch; 240-second bracket; 241-second accommodating groove; 242-second through hole; 243-second latch; 250-gasket; 260-sleeve; 300-secondary diaphragm; 310-fixing ring; 400-sound damping member; 500-elastic sleeve. DETAILED DESCRIPTION

[0033] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0034] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. In contrast, when an element is referred to as being "directly on" another element, there is no intermediate element. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0035] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0037] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of the template herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0038] Example

[0039] Please also read Figure 1 and Figure 2 The present embodiment provides an in-ear earphone, specifically an air cushion type flat in-ear earphone, which includes a housing 100, a flat speaker 200 and a sub-diaphragm 300.

[0040] The housing 100 has a front end 101 close to the human body and a rear end 102 away from the human body when worn.

[0041] Accordingly, the flat speaker 200 is disposed in the housing 100 and divides the inner cavity of the housing 100 into a front cavity 103 and a rear cavity 104. The front cavity 103 is close to the front end 101 of the housing 100, and the rear cavity 104 is close to the rear end 102 of the housing 100.

[0042] In addition, the sub-diaphragm 300 is disposed in the rear cavity 104 and is spaced apart from the flat panel speaker 200 .

[0043] When using the above-mentioned in-ear headphones, the flat speaker 200 pushes the air in the rear cavity 104 to move toward the rear end 102 of the housing 100, causing the sub-diaphragm 300 to also move backwards, and the sub-diaphragm 300 becomes the acoustic load of the flat speaker 200. Because of the existence of the load, the acoustic compliance and sound quality are greatly increased, thereby enhancing the bass. When the bass is dynamic, the air in the rear cavity 104 will not be compressed, so the radiation areas of the flat speaker 200 and the sub-diaphragm 300 can be superimposed and calculated. According to the principle of speaker radiation sound, after the radiation area increases, the low frequency will get a better dive, the linear amplitude will decrease, and the bass will be enhanced. Therefore, the above-mentioned in-ear headphones can enhance the bass without affecting the wearing comfort.

[0044] In some embodiments, the in-ear earphone further includes an acoustic damping member 400. The acoustic damping member 400 is disposed in the housing 100 and is located on a side of the secondary diaphragm 300 facing away from the flat speaker 200, and can adjust the airflow.

[0045] Optionally, the sound damping member 400 is a sound damping mesh.

[0046] In some embodiments, the in-ear earphone further includes an elastic sleeve 500 , and the elastic sleeve 500 is sleeved on the front end 101 of the housing 100 .

[0047] When worn, the elastic sleeve 500 is embedded in the ear canal and undergoes elastic deformation, so that it can better fit the ear canal wall, evenly distribute force, and improve wearing comfort.

[0048] Optionally, the elastic sleeve 500 is a rubber sleeve.

[0049] See also Figure 3 In some embodiments, the housing 100 is composed of a first housing 110, a second housing 120, a third housing 130 and a fourth housing 140 connected in sequence. The first housing 110 has a rear end 102, and the fourth housing 140 has a front end 101.

[0050] The first shell 110 and the second shell 120 are both cylindrical, and the inner diameter of the first shell 110 is greater than the inner diameter of the second shell 120. The third shell 130 is conical, and the inner diameter of the third shell 130 decreases from the end close to the second shell 120 to the end close to the fourth shell 140, and the maximum inner diameter of the third shell 130 is smaller than the inner diameter of the second shell 120. The fourth shell 140 is cylindrical, and the inner diameter of the fourth shell 140 is smaller than the minimum inner diameter of the third shell 130.

[0051] Please combine Figure 2 The sub-diaphragm 300 and the acoustic damping member 400 are disposed in the first shell 110 , the flat speaker 200 is disposed in the second shell 120 , and the elastic sleeve 500 is sleeved on the fourth shell 140 .

[0052] Since the inner diameter of the first shell 110 is larger than the inner diameter of the second shell 120, the secondary diaphragm 300 disposed in the first shell 110 has a larger radiation area than the flat speaker 200 disposed in the second shell 120, and can better dive the low frequency and enhance the bass. In addition, the first shell 110 is usually located outside the ear canal when worn, so increasing the inner diameter of the first shell 110 will not affect the wearing experience.

[0053] Optionally, the first shell 110 , the second shell 120 , the third shell 130 and the fourth shell 140 are integrally formed.

[0054] Specifically, an annular mounting groove 111 is provided on the inner wall of the first shell 110 at one end away from the second shell 120 , and the sound damping member 400 is embedded and fixed in the mounting groove 111 .

[0055] Specifically, an annular step portion 112 is provided at one end of the first shell 110 close to the second shell 120 , and the first shell 110 is connected to the second shell 120 via the step portion 112 .

[0056] Meanwhile, a fixing ring 310 is disposed on the outer periphery of the sub-diaphragm 300 . The fixing ring 310 is embedded in the first housing 110 and abuts against the inner wall and the step portion 112 of the first housing 110 , thereby fixing the sub-diaphragm 300 in the first housing 110 .

[0057] When assembling the in-ear earphone, the step portion 112 can be used to position the sub-diaphragm 300 .

[0058] Specifically, since the maximum inner diameter of the third housing 130 is smaller than the inner diameter of the second housing 120, the inner edge of the end surface of the third housing 130 close to the second housing 120 is exposed in the second housing 120. At this time, the flat speaker 200 abuts against the end surface of the third housing 130.

[0059] When assembling the in-ear earphone, the end surface of the third housing 130 can be used to position the flat speaker 200 .

[0060] Please also read Figure 4 and Figure 5 In some embodiments, the flat speaker 200 includes a main diaphragm 210 and a magnet 220. The main diaphragm 210 is parallel to the sub-diaphragm 300, and a coil is disposed on the main diaphragm 210. The magnets 220 are disposed in pairs on both sides of the main diaphragm 210 along the thickness direction.

[0061] When in use, the main diaphragm 210 and the coil are in a fixed magnetic field formed by the magnet 220. When the coil circuit is connected to an alternating audio current, the coil is acted upon by electromagnetic force and drives the main diaphragm 210 to vibrate, thereby pushing the air to produce sound. The main diaphragm 210 pushes the air in the rear cavity 104 to move toward the rear end 102 of the housing 100, causing the auxiliary diaphragm 300 to move backwards as well.

[0062] Furthermore, the equivalent mass or equivalent area of ​​the auxiliary diaphragm 300 is greater than that of the main diaphragm 210 , and the acoustic compliance of the auxiliary diaphragm 300 is greater than that of the main diaphragm 210 .

[0063] In some embodiments, the flat panel speaker 200 further includes a first bracket 230 and a second bracket 240 connected to each other.

[0064] A first receiving groove 231 is disposed on a side of the first bracket 230 facing the second bracket 240 , and a second receiving groove 241 is disposed on a side of the second bracket 240 facing the first bracket 230 .

[0065] Correspondingly, the main diaphragm 210 is clamped and fixed between the first bracket 230 and the second bracket 240 , the magnet 220 located on one side of the main diaphragm 210 is embedded in the first receiving groove 231 , and the magnet 220 located on the other side of the main diaphragm 210 is embedded in the second receiving groove 241 .

[0066] By using the first bracket 230 and the second bracket 240 , the main diaphragm 210 and the magnets 220 on both sides thereof are relatively fixed without contacting each other, so as to form a whole.

[0067] Optionally, the first bracket 230 is located on a side of the second bracket 240 facing the first shell 110 , and the second bracket 240 is located on a side of the first bracket 230 facing the third shell 130 .

[0068] In addition, a first through hole 232 is provided in the middle of the first bracket 230, and the first receiving groove 231 communicates with the rear cavity 104 through the first through hole 232. A second through hole 242 is provided in the middle of the second bracket 240, and the second receiving groove 241 communicates with the front cavity 103 through the second through hole 242.

[0069] Furthermore, the flat panel speaker 200 further includes gaskets 250 . The gaskets 250 are arranged in pairs on both sides of the main diaphragm 210 along the thickness direction, and the gaskets 250 are located at the periphery of the magnet 220 .

[0070] During assembly, the first bracket 230 and the second bracket 240 clamp and fix the main diaphragm 210 through the gasket 250. The gasket 250 can evenly distribute the pressure received by the main diaphragm 210, so that the main diaphragm 210 is not easily damaged.

[0071] Furthermore, a first latch 233 is provided on one side of the first bracket 230 facing the second bracket 240. The first latch 233 sequentially passes through the gasket 250 between the main diaphragm 210 and the first bracket 230, the main diaphragm 210, and the gasket 250 between the main diaphragm 210 and the second bracket 240, and then penetrates into the second bracket 240, and is interference-fitted with the second bracket 240, so that the first bracket 230 and the second bracket 240 are detachably connected.

[0072] Similarly, a second latch 243 is provided on a side of the second bracket 240 facing the first bracket 230. The second latch 243 sequentially passes through the gasket 250 between the main diaphragm 210 and the second bracket 240, the main diaphragm 210, and the gasket 250 between the main diaphragm 210 and the first bracket 230, and then penetrates into the first bracket 230, and is interference-fitted with the first bracket 230, so that the first bracket 230 and the second bracket 240 are detachably connected.

[0073] It is understandable that, in order to facilitate disassembly and assembly, the first latch 233 may be provided only on the first bracket 230, or the second latch 243 may be provided only on the second bracket 240, or the first latch 233 may be provided on the first bracket 230 and the second latch 243 may be provided on the second bracket 240 at the same time, which is not limited in this embodiment.

[0074] In some embodiments, the flat speaker 200 further includes a sleeve 260 , and the sleeve 260 is easily deformable. The sleeve 260 is sleeved on the first bracket 230 and the second bracket 240 , and the sleeve 260 is embedded in the second housing 120 and abuts against the inner wall of the second housing 120 .

[0075] When the flat panel speaker 200 is assembled, the first bracket 230 and the second bracket 240 form an interference fit with the inner wall of the second housing 120 through the sleeve 260 and are fixed in the second housing 120 by friction.

[0076] In summary, the above-mentioned in-ear headphones can significantly increase the sound compliance and sound quality by adding a secondary diaphragm 300 in the rear cavity 104 of the housing 100 as a load for the main diaphragm 210, thereby enhancing the bass. When the bass dynamics are large, the air in the rear cavity 104 will not be compressed, so the radiation areas of the main diaphragm 210 and the secondary diaphragm 300 can be calculated superimposed. According to the principle of speaker radiation sound, after the radiation area increases, the low frequency will get a better dive, the linear amplitude will decrease, and the bass will be enhanced. Therefore, the above-mentioned in-ear headphones can enhance the bass without affecting the wearing comfort.

[0077] In addition, the rear cavity 104 of the above-mentioned in-ear earphone is relatively closed, and only a small amount of air flows out through the sound damping member 400, so that the sound is closed in the rear cavity 104, and the outside cannot hear or can only hear a faint sound. At the same time, because the volume of the rear cavity 104 is small enough, the stiffness of the air in the rear cavity 104 is higher than the stiffness of the main diaphragm 210 and the auxiliary diaphragm 300. For the main diaphragm 210 and the auxiliary diaphragm 300, the role of the air is equivalent to a strong elastic air cushion, forming a structure similar to an air cushion speaker, which has the advantages of low distortion and good transient performance.

[0078] In all examples shown and described herein, any specific values ​​should be interpreted as merely exemplary and not as limiting, and thus other examples of the exemplary embodiments may have different values.

[0079] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0080] The above-mentioned embodiments only express several implementation methods of the present invention, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. An in-ear headset, characterized in that: include: The housing has a front end close to the human body and a rear end away from the human body when worn; A flat panel speaker, the flat panel speaker is disposed in the housing and divides the inner cavity of the housing into a front cavity near the front end and a rear cavity near the rear end; as well as A secondary diaphragm is arranged in the rear cavity and spaced apart from the flat panel speaker.

2. The in-ear earphone according to claim 1, characterized in that The housing comprises a first shell and a second shell connected to each other, the inner diameter of the first shell is greater than the inner diameter of the second shell, and the first shell has the rear end; The sub-diaphragm is arranged in the first shell, and the flat panel speaker is arranged in the second shell.

3. The in-ear earphone according to claim 2, characterized in that: An annular step portion is provided at one end of the first shell close to the second shell, and the first shell is connected to the second shell via the step portion; A fixing ring is arranged on the outer periphery of the auxiliary diaphragm. The fixing ring is embedded in the first shell and abuts against the inner wall of the first shell and the step portion respectively.

4. The in-ear earphone according to claim 1, characterized in that: The in-ear earphone also includes a sound damping component, which is arranged in the housing and located on a side of the secondary diaphragm facing away from the flat speaker.

5. The in-ear earphone according to any one of claims 1 to 4, characterized in that: The flat panel speaker comprises a main diaphragm and a magnet, wherein the main diaphragm is parallel to the auxiliary diaphragm, and the magnets are arranged in pairs on both sides of the main diaphragm along the thickness direction.

6. The in-ear earphone according to claim 5, characterized in that: The flat panel speaker further comprises a first bracket and a second bracket connected to each other, a first receiving groove is provided on a side of the first bracket facing the second bracket, and a second receiving groove is provided on a side of the second bracket facing the first bracket; The main diaphragm is clamped and fixed between the first bracket and the second bracket, the magnet located on one side of the main diaphragm is embedded in the first receiving groove, and the magnet located on the other side of the main diaphragm is embedded in the second receiving groove.

7. The in-ear earphone according to claim 6, characterized in that: The flat panel speaker also includes gaskets, which are arranged in pairs on both sides of the main diaphragm along the thickness direction. The gaskets are located on the periphery of the magnet, and the first bracket and the second bracket clamp and fix the main diaphragm through the gaskets.

8. The in-ear earphone according to claim 6, characterized in that: A first latch is provided on a side of the first bracket facing the second bracket, the first latch penetrates the second bracket and is interference-fitted with the second bracket; and / or A second latch is disposed on a side of the second bracket facing the first bracket. The second latch penetrates the first bracket and is interference-fitted with the first bracket.

9. The in-ear earphone according to claim 6, characterized in that: The flat panel speaker further comprises a sleeve, wherein the sleeve is sleeved on the first bracket and the second bracket, and the sleeve is embedded in the shell and abuts against the inner wall of the shell.

10. The in-ear earphone according to claim 1, characterized in that: The in-ear earphone also includes an elastic sleeve, and the elastic sleeve is arranged on the front end.

Images