In-ear earphone with caisson structure

Abstract

The present invention discloses an in-ear earphone with a caisson structure, comprising: a front cavity shell, comprising a front cavity and a sound outlet connected to the front cavity, wherein the sound outlet is sleeved with an earmuff; a rear cavity shell, comprising a rear cavity connected to the front cavity, wherein a caisson structure part is arranged in the rear cavity, wherein the caisson structure part comprises an upper caisson structure, a middle caisson structure and a lower caisson structure connected in sequence, wherein the middle caisson structure is located outside the upper caisson structure, and its diameter is larger than that of the upper caisson structure, and the lower caisson structure is located outside the middle caisson structure, and its diameter is larger than that of the middle caisson structure; a sound-emitting unit is arranged in the front cavity and the rear cavity; by arranging the caisson structure part in the rear cavity, a cavity is formed between the caisson structure part and the sound-emitting unit, thereby preventing the sound from diffusing upward, and scientifically applying the principle of acoustic inverted holes to play a role in gathering sound, and at the same time, in order to enhance the low-frequency response and improve the sound quality, the inverted holes reduce the back wave reflection of the bass unit, thereby making the bass cleaner and reducing distortion.

Description

Technical Field

[0001] The invention relates to the technical field of earphones, and in particular to an in-ear earphone with a caisson structure. Background Art

[0002] With the development of wireless electronic technology, many headphones currently use a Bluetooth wireless headphone structure. The existing Bluetooth wireless headphone structure mainly includes a headphone shell, a sound unit and an earmuff. The back cavity design of the headphone shell has an important influence on the sound quality. A reasonable back cavity design mainly optimizes the sound quality by affecting the propagation path and reflection of the sound, reduces the interference of sound waves, and enhances the layering and three-dimensional sense of the sound quality, thereby significantly improving the sound quality experience.

[0003] According to Chinese patent CN220823262U, an in-ear Bluetooth headset is disclosed, which includes an earphone housing, a sound tube, a dynamic speaker, a moving iron speaker, a control circuit board and a battery. The earphone housing has an inner cavity, and the control circuit board and the battery are both arranged at the rear end of the inner cavity, occupying the space at the rear end of the inner cavity. When the sound unit is working, the layering and three-dimensional sense of the sound quality are affected.

[0004] Therefore, it is necessary to develop an in-ear earphone with a caisson structure to solve the above problems. Summary of the invention

[0005] The purpose of the present invention is to provide an in-ear earphone with a caisson structure and improved sound quality.

[0006] To achieve the above object, the present invention provides the following technical solution: an in-ear earphone with a caisson structure, comprising:

[0007] A front cavity shell, comprising a front cavity and a sound outlet communicating with the front cavity, wherein the sound outlet is sleeved with an earmuff;

[0008] A rear cavity shell, having a rear cavity communicated with the front cavity, wherein a caisson structure is arranged in the rear cavity, wherein the caisson structure comprises an upper caisson structure, a middle caisson structure and a lower caisson structure connected in sequence, wherein the middle caisson structure is located outside the upper caisson structure and has a diameter larger than that of the upper caisson structure, and the lower caisson structure is located outside the middle caisson structure and has a diameter larger than that of the middle caisson structure;

[0009] The sound generating unit is arranged in the front chamber and the rear chamber.

[0010] Furthermore, the upper caisson structure is a circular well, including a center plate and an upper caisson side wall surrounding the center plate, the center plate is a circular plate, the upper caisson side wall is an arc-shaped plate body surrounding the center plate, the inner end of the upper caisson side wall is fixedly connected to the edge of the center plate, and the outer end extends outward at an angle to form an angle with the center plate.

[0011] Furthermore, a plurality of upper grooves are formed on the side wall of the upper caisson, and the upper grooves are arranged along the side wall of the upper caisson and around the central plate.

[0012] Furthermore, the upper groove is a trapezoidal groove, one end with a smaller diameter is close to the inner end of the upper caisson side wall, and the other end with a larger diameter is close to the outer end of the upper caisson side wall.

[0013] Furthermore, the middle-level caisson structure is an octagonal well, including a first connecting plate connected to the side wall of the upper-level caisson and a middle-level caisson side wall surrounding the first connecting plate, the first connecting plate being located on the outside of the upper-level caisson structure, the inner end of which is fixedly connected to the outer end of the side wall of the upper-level caisson, the outer end of which extends horizontally outward and is fixedly connected to the inner end of the side wall of the middle-level caisson, and the first connecting plate and the side wall of the middle-level caisson form an angle.

[0014] Furthermore, the outer end of the middle caisson side wall extends obliquely outward, the middle caisson side wall is formed with eight inclined surfaces, presenting a regular octagonal structure, and the diameter of the middle caisson side wall is greater than the diameter of the upper caisson side wall.

[0015] Furthermore, a middle-layer groove is opened on the side wall of the middle-layer caisson, and the middle-layer groove surrounds the first connecting plate along the side wall of the middle-layer caisson.

[0016] Furthermore, the lower caisson structure is a square well, including a second connecting plate connected to the side wall of the middle caisson and a lower caisson side wall surrounding the second connecting plate, the second connecting plate being located on the outside of the middle caisson structure, the inner end of which is fixedly connected to the outer end of the side wall of the middle caisson, and the outer end of which extends horizontally outward and is fixedly connected to the side wall of the lower caisson.

[0017] Furthermore, the side wall of the lower caisson is formed with four inclined surfaces, presenting a square structure, the inclined surfaces of the side wall of the lower caisson are connected to the side wall of the middle caisson, and the diameter of the side wall of the lower caisson is greater than the diameter of the side wall of the middle caisson.

[0018] Furthermore, the side wall of the lower caisson is provided with a lower groove, which is formed by being sunken inward from the surface of the side wall of the lower caisson and surrounds the side wall of the middle caisson along the side wall of the lower caisson.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention is an in-ear headphone with a caisson structure, which has the characteristic of improving sound quality. A caisson structure portion composed of an upper caisson structure, a middle caisson structure and a lower caisson structure is arranged in the rear chamber, and a cavity is formed between the caisson structure portion and the sound unit, thereby preventing the sound emitted by the sound unit from diffusing upward. The principle of acoustic bass reflex holes is scientifically applied to play a role in gathering sound. At the same time, in order to enhance the low-frequency response and improve the sound quality, the bass reflex hole reduces the back wave reflection of the bass unit, making the bass cleaner and reducing distortion. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of an in-ear earphone with a caisson structure according to the present invention;

[0022] Figure 2 for Figure 1 A cross-sectional view of an in-ear earphone having a caisson structure is shown;

[0023] Figure 3 for Figure 1 A schematic diagram of a partial structure of an in-ear earphone with a caisson structure is shown;

[0024] Figure 4 for Figure 1 A schematic diagram of the caisson structure portion of an in-ear headphone with a caisson structure is shown. DETAILED DESCRIPTION

[0025] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation, structure, features and effects of the in-ear headphones with a caisson structure proposed by the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments. In the following description, different "one embodiment" or "another embodiment" does not necessarily refer to the same embodiment. In addition, specific features, structures or characteristics in one or more embodiments may be combined in any suitable form.

[0026] Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

[0027] The specific scheme of the in-ear earphone with caisson structure provided by the present invention is described in detail below with reference to the accompanying drawings.

[0028] Please see Figures 1 to 4 The present invention is an in-ear earphone with a caisson structure, which includes a front cavity shell 1, an earmuff 2 installed on the front cavity shell 1, a rear cavity shell 3 fixedly connected to the front cavity shell 1, and a sound unit 4 arranged in the front cavity shell 1 and the rear cavity shell 3.

[0029] Please see Figure 1 to Figure 2 The front cavity shell 1 has a front cavity 11 and a sound outlet 12 connected to the front cavity 11. The shape of the front cavity shell 1 can be changed according to the needs. One end of the sound outlet 12 is connected to the front cavity 11, and the other end extends outward to be connected to the earmuff 2. Secondly, the outer surface of the sound outlet 12 is provided with an annular groove recessed inward from its surface.

[0030] The front cavity shell 1 is provided with a power-through hole 13, which passes through the front cavity shell 1 and is connected with the front cavity 11. The position and shape of the power-through hole 13 can be changed according to needs. In this embodiment, the number of the power-through holes 13 is a pair and the shape is circular.

[0031] The earmuff 2 is made of soft material, such as rubber, silicone, etc. The earmuff 2 enters the annular groove and is engaged with the front cavity shell 1.

[0032] The rear cavity shell 3 has a rear chamber 31, in which a caisson structure part 32 and a fixing part 33 for fixing the position of the caisson structure part 32 are arranged. The inner end of the fixing part 33 is fixedly connected to the caisson structure part 32, and the outer end extends outwardly to be clamped or fixedly connected to the inner wall of the rear cavity shell 3, so that the caisson structure part 32 and the sound unit 4 maintain a parallel relationship, and the sound emitted by the sound unit 4 evenly enters the interior of the caisson structure part 32 and is reflected inside the caisson structure part 32.

[0033] The front chamber 11 and the rear chamber 31 form a closed cavity, and the sound generating unit 4 is located in the cavity.

[0034] The caisson structure part 32 includes an upper caisson structure 311 , a middle caisson structure 312 and a lower caisson structure 313 , and the centers of the upper caisson structure 311 , the middle caisson structure 312 and the lower caisson structure 313 are on the same axis.

[0035] Please see Figure 4The upper caisson structure 311 is a circular well, including a center plate 314 and an upper caisson side wall 315 surrounding the center plate 314. The center plate 314 is a circular plate, which is relatively parallel to the fixing member 33. The upper caisson side wall 315 is an arc-shaped plate body, which is arranged around the center plate 314. Its inner end is fixedly connected to the edge of the center plate 314, and its outer end extends outward at an angle. The upper caisson side wall 315 forms an angle with the center plate 314. The upper caisson side wall 315 is provided with a plurality of upper grooves 316. The upper grooves 316 are arranged along the upper caisson side wall 315 and around the center plate 314. Preferably, the upper grooves 316 are trapezoidal grooves, and the end with a smaller diameter is close to the inner end of the upper caisson side wall 315, and the other end with a larger diameter is close to the outer end of the upper caisson side wall 315.

[0036] The middle caisson structure 312 is an octagonal well, including a first connecting plate 317 connected to the upper caisson side wall 315 and a middle caisson side wall 318 surrounding the first connecting plate 317. The first connecting plate 317 is located outside the upper caisson structure 311, and its inner end is fixedly connected to the outer end of the upper caisson side wall 315. The outer end of the first connecting plate 317 extends horizontally outward and is fixedly connected to the inner end of the middle caisson side wall 318. The first connecting plate 317 and the middle caisson side wall 318 form an angle. The outer end of the middle caisson side wall 318 extends obliquely outward. The middle caisson side wall 318 is formed with eight inclined surfaces, presenting a regular octagonal structure. The diameter of the middle caisson side wall 318 is greater than the diameter of the upper caisson side wall 315. Furthermore, a middle groove 319 is opened on the middle caisson side wall 318, and the middle groove 319 surrounds the first connecting plate 317 along the middle caisson side wall 318.

[0037] The lower caisson structure 313 is a square well, including a second connecting plate 3112 connected to the middle caisson side wall 318, and a lower caisson side wall 3110 surrounding the second connecting plate 3112. The second connecting plate 3112 is located outside the middle caisson structure 312, and its inner end is fixedly connected to the outer end of the middle caisson side wall 318. The outer end of the second connecting plate 3112 extends horizontally outward and is fixedly connected to the lower caisson side wall 3110. The lower caisson side wall 311 0 is formed with four inclined surfaces and presents a square structure. The inclined surface of the lower caisson side wall 3110 is connected to the side wall of the middle caisson side wall 318. The diameter of the lower caisson side wall 3110 is larger than the diameter of the middle caisson side wall 318. Furthermore, the lower caisson side wall 3110 is provided with a lower groove 3111. The lower groove 3111 is formed by being sunken inward from the surface of the lower caisson side wall 3110 and surrounding the middle caisson side wall 318 along the lower caisson side wall 3110.

[0038] The sound unit 4 is prior art and will not be explained in detail. The sound unit 4 generates sound in the front cavity shell 1 and the rear cavity shell 3 and is emitted through the sound outlet 12 . The sound unit 4 has an interface 41 , which passes through the power-through hole 13 and is exposed outside the front cavity shell 1 .

[0039] The present invention is an in-ear earphone with a caisson structure, which has the characteristic of improving sound quality. A caisson structure part composed of an upper caisson structure, a middle caisson structure and a lower caisson structure is arranged in a rear chamber, and a cavity is formed between the caisson structure part and the sound unit, thereby preventing the sound emitted by the sound unit from diffusing upward. The principle of acoustic inverted holes is scientifically applied to play a role in gathering sound. At the same time, in order to enhance low-frequency response and improve sound quality, the inverted holes reduce the back wave reflection of the bass unit, thereby making the bass cleaner and reducing distortion.

[0040] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An in-ear headset with a caisson structure, characterized in that: include: A front cavity shell (1) comprising a front cavity (11) and a sound outlet (12) connected to the front cavity (11), wherein the sound outlet (12) is sleeved with an earmuff (2); A rear cavity shell (3) having a rear cavity (31) connected to the front cavity (11); a caisson structure portion (32) is provided in the rear cavity (31); the caisson structure portion (32) comprises an upper caisson structure (311), a middle caisson structure (312), and a lower caisson structure (313) connected in sequence; the middle caisson structure (312) is located outside the upper caisson structure (311) and has a diameter greater than that of the upper caisson structure (311); and the lower caisson structure (313) is located outside the middle caisson structure (312) and has a diameter greater than that of the middle caisson structure (312); The upper caisson structure (311) is a circular well, comprising a central plate (314) and an upper caisson side wall (315) surrounding the central plate (314); the central plate (314) is a circular plate; the upper caisson side wall (315) is an arc-shaped plate body surrounding the central plate (314); the inner end of the upper caisson side wall (315) is fixedly connected to the edge of the central plate (314); the outer end of the upper caisson side wall (315) is inclined to extend outwards, forming an angle with the central plate (314); The sound generating unit (4) is arranged in the front chamber (11) and the rear chamber (31).

2. The in-ear earphone with a caisson structure according to claim 1, characterized in that: The upper caisson side wall (315) is provided with a plurality of upper grooves (316), and the upper grooves (316) are arranged along the upper caisson side wall (315) and around the central plate (314).

3. The in-ear earphone with a caisson structure according to claim 2, characterized in that: The upper groove (316) is a trapezoidal groove, one end with a smaller diameter is close to the inner end of the upper caisson side wall (315), and the other end with a larger diameter is close to the outer end of the upper caisson side wall (315).

4. The in-ear earphone with a caisson structure according to claim 2, characterized in that: The middle caisson structure (312) is an octagonal caisson, comprising a first connecting plate (317) connected to the upper caisson side wall (315), and a middle caisson side wall (318) surrounding the first connecting plate (317); the first connecting plate (317) is located outside the upper caisson structure (311); its inner end is fixedly connected to the outer end of the upper caisson side wall (315); its outer end extends horizontally outward and is fixedly connected to the inner end of the middle caisson side wall (318); the first connecting plate (317) and the middle caisson side wall (318) form an angle.

5. The in-ear earphone with a caisson structure according to claim 4, characterized in that: The outer end of the middle caisson side wall (318) extends obliquely outwards, and the middle caisson side wall (318) is formed with eight inclined surfaces, presenting a regular octagonal structure. The diameter of the middle caisson side wall (318) is greater than the diameter of the upper caisson side wall (315).

6. The in-ear earphone with a caisson structure according to claim 5, characterized in that: A middle-layer groove (319) is provided on the middle-layer caisson side wall (318), and the middle-layer groove (319) surrounds the first connecting plate (317) along the middle-layer caisson side wall (318).

7. The in-ear earphone with a caisson structure according to claim 4, characterized in that: The lower caisson structure (313) is a square well, comprising a second connecting plate (3112) connected to the middle caisson side wall (318), and a lower caisson side wall (3110) surrounding the second connecting plate (3112); the second connecting plate (3112) is located on the outside of the middle caisson structure (312), the inner end of which is fixedly connected to the outer end of the middle caisson side wall (318), and the outer end of which extends horizontally outward and is fixedly connected to the lower caisson side wall (3110).

8. The in-ear earphone with a caisson structure according to claim 7, characterized in that: The lower caisson side wall (3110) is formed with four inclined surfaces and presents a square structure. The inclined surfaces of the lower caisson side wall (3110) are connected to the side walls of the middle caisson side wall (318). The diameter of the lower caisson side wall (3110) is greater than the diameter of the middle caisson side wall (318).

9. The in-ear earphone with a caisson structure according to claim 8, characterized in that: The lower caisson side wall (3110) is provided with a lower groove (3111), and the lower groove (3111) is formed by being recessed inward from the surface of the lower caisson side wall (3110) and surrounds the middle caisson side wall (318) along the lower caisson side wall (3110).

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