Open type earphone
By setting a tube groove in the first housing of the open headphones to form a bass and a tuning pipe, and combining the design of the first tuning network, the problem that the rear sound cavity in the prior art cannot take into account both the bass effect and waterproofing requirements are achieved. Guarantee of sound quality improvement and waterproof performance.
Patent Information
- Application Number
- CN202310961509.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2023-08-01
- Publication Date
- 2025-02-14
AI Technical Summary
The rear sound cavity of existing open headphones cannot take into account good bass effects and meet waterproof requirements.
By providing a pipe groove in the first housing, a bass pipe and a tuning pipe are formed that are respectively communicated with the rear sound cavity, and combined with the design of the first tuning network, the bass effect is improved and the waterproof performance is guaranteed.
It effectively improves the bass effect and sound quality of the open headphones, and also has good waterproof performance to prevent rainwater from flowing back into the rear sound cavity.
Smart Images
Figure CN119450279A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of earphones, and more specifically, to an open earphone. Background Art
[0002] As people pay more attention to their own health, they will choose to exercise outdoors in their spare time. Open-ear headphones have a stable fit, and people can still hear the surrounding sounds when doing outdoor sports, which improves people's safety when doing outdoor sports.
[0003] The open-back headphones commonly seen on the market currently have insufficient volume in their rear acoustic chambers, so they need to have larger tuning holes to compensate for the lack of bass. However, this also results in greater audio leakage, making it difficult to meet the waterproof requirements. Some brands have added bass enhancement tubes to their designs, which first over-suppress the low frequency of the speaker, and then use the bass tube to slightly increase the low frequency. This approach puts the cart before the horse, and the entire machine cannot meet the requirements of bass, vocals, and IPX5 waterproof rating. Summary of the invention
[0004] The technical problem to be solved by the embodiments of the present application is that the rear acoustic cavity of conventional open-type headphones cannot simultaneously provide a good bass effect and meet the waterproof requirement.
[0005] In order to solve the above technical problems, the embodiment of the present application provides an open-type earphone, which adopts the following technical solution:
[0006] An open earphone comprises a first shell and a first tuning net;
[0007] The first shell is divided into a speaker accommodating cavity and a rear sound cavity by a partition, and the bottom surface of the first shell is provided with a bass sound outlet hole and at least one tuning hole;
[0008] A pipe groove is provided in the first shell, the pipe groove has a first opening communicating with the rear sound cavity and a second opening communicating with the bass sound outlet hole, the first opening is located higher than the second opening, and the pipe groove cooperates with the inner wall of the first shell to form a bass pipe;
[0009] A tuning pipe is formed between the pipe groove and the partition plate, and the tuning pipe is connected between the rear sound cavity and the tuning hole;
[0010] The first tuning net is installed on the first shell and covers the tuning hole.
[0011] Furthermore, the position of the first opening is higher than the position of the end of the tuning pipe communicating with the rear sound cavity.
[0012] Furthermore, the diameter of the tuning hole ranges from 0.5 to 0.8 mm.
[0013] Furthermore, the number of the tuning holes is at least two, and the average aperture d0 of the plurality of tuning holes is calculated by the following formula:
[0014] d0=SQRT(d1 2 +d2 2 +……+d n 2 )
[0015] Among them, d1, d2…d n is the diameter of each tuning hole;
[0016] The average aperture diameter d0 of the tuning holes ranges from 0.5 mm to 0.8 mm.
[0017] Furthermore, the length of the bass pipe ranges from 10 mm to 40 mm;
[0018] And / or, the damping coefficient of the first tuning network ranges from 100 to 400.
[0019] Furthermore, the open-type earphones also include a second tuning net, which is installed at the bottom of the first shell and covers the bass sound outlet and the first tuning net.
[0020] Furthermore, outer surfaces of the first tuning net and the second tuning net are both provided with a waterproof coating.
[0021] Furthermore, a sound outlet nozzle is provided on the first shell, and a front sound cavity is formed in the first shell;
[0022] The front sound cavity is arranged between the speaker accommodating cavity and the sound outlet nozzle.
[0023] Furthermore, the open-type earphone also includes a third tuning net, which is installed on the first shell and covers the sound outlet nozzle.
[0024] Furthermore, the open-type earphones also include an ear-hanging connection portion, and the ear-hanging connection portion is connected to the first shell to facilitate wearing of the open-type earphones.
[0025] Compared with the prior art, the embodiments of the present application have the following beneficial effects:
[0026] The present application arranges a pipe groove in the first shell to form a bass duct and a tuning duct respectively connected to the rear sound cavity, and through the cooperation of the bass duct, the tuning duct and the first tuning net, the bass effect of the open-type headphones is enhanced and the sound quality effect is improved; at the same time, the bass duct adopts a setting in which the first opening is higher than the second opening, and the bass sound outlet hole and the tuning hole are arranged at the bottom of the first shell, so as to prevent rainwater from flowing back along the bass duct and the tuning duct into the rear sound cavity, so that the open-type headphones have good waterproof performance. BRIEF DESCRIPTION OF THE DRAWINGS
[0027] In order to more clearly illustrate the scheme of the present application, a brief introduction is given below to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.
[0028] Figure 1 is a cross-sectional schematic diagram of a first shell of an embodiment of the present application;
[0029] Figure 2 is a schematic structural diagram of an open-type earphone according to an embodiment of the present application;
[0030] Figure 3 About Figure 2 Schematic cross-section diagram of the AA section line;
[0031] Figure 4 It is a schematic diagram of the acoustic curve of open headphones without bass pipe and with bass pipe;
[0032] Figure 5 It is a schematic diagram of the acoustic curve of open-type headphones with the tuning holes closed and open;
[0033] Figure 6 It is a schematic diagram of the acoustic curve of open headphones with different bass duct lengths;
[0034] Figure 7 It is a schematic diagram of the acoustic curve of the first tuning network of open headphones at different damping coefficients.
[0035] Reference numerals:
[0036] 1. First shell; 11. Partition; 12. Speaker accommodating chamber; 13. Rear sound chamber; 14. Bass sound outlet hole; 15. Tuning hole; 16. Tube groove; 17. Bass pipe; 18. Tuning pipe; 19. Front sound chamber; 2. First tuning net; 3. Speaker; 4. Second tuning net; 5. Third tuning net; 6. Second shell; 7. Ear hook connection part. DETAILED DESCRIPTION
[0037] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by technicians in the technical field of this application; the terms used in the specification of the application herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, not to describe a specific order.
[0038] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.
[0039] See also Figure 1 As shown, the open-type earphone of the present application comprises a first shell 1 and a first tuning net 2 , wherein the first tuning net 2 is mounted on the first shell 1 .
[0040] In some embodiments, a speaker accommodating cavity 12 and a rear sound cavity 13 are formed in the first shell 1 by a partition 11, and a bass sound outlet hole 14 and at least one tuning hole 15 are provided on the bottom surface of the first shell 1. In this embodiment, the open earphone also includes a speaker 3, and the speaker 3 is provided in the speaker accommodating cavity 12.
[0041] A pipe groove 16 is provided in the first shell 1, and the pipe groove 16 has a first opening connected to the rear sound cavity 13 and a second opening connected to the bass sound outlet 14. The position of the first opening is higher than the position of the second opening. The pipe groove 16 cooperates with the inner wall of the first shell 1 to form a bass duct 17. In the present embodiment, the bass duct 17 is obliquely arranged in the first shell 1. Through the inclination and the setting of the length of the bass duct 17 itself, water pressure shocks at different angles can be effectively intercepted.
[0042] A tuning pipe 18 is formed between the pipe groove 16 and the partition plate 11 . The tuning pipe 18 is connected between the rear sound cavity 13 and the tuning hole 15 . The first tuning net 2 covers the outer side of the tuning hole 15 .
[0043] The open-type earphones provided in the embodiment of the present application are provided with a tube groove 16 in the first shell 1 to form a bass duct 17 and a tuning duct 18 respectively connected to the rear sound cavity 13, and the bass effect of the open-type earphones is enhanced and the sound quality effect is improved through the cooperation of the bass duct 17, the tuning duct 18 and the first tuning net 2; the bass duct 17 adopts the setting that the first opening is higher than the second opening and the bass outlet hole 14 and the tuning hole 15 are set at the bottom end of the first shell 1, so as to prevent rainwater from flowing back into the rear sound cavity 13 along the bass duct 17 and the tuning duct 18, so that the open-type earphones have good waterproof performance.
[0044] Please review Figure 1 As shown, in some embodiments, the position of the first opening is higher than the position of one end of the tuning pipe 18 communicating with the rear sound cavity 13 .
[0045] In some embodiments, the diameter of the tuning hole 15 ranges from 0.5 mm to 0.8 mm.
[0046] The number of the tuning holes 15 is at least two, and the average aperture d0 of the plurality of tuning holes 15 is calculated by the following formula:
[0047] d0=SQRT(d1 2 +d2 2 +……+d n 2 )
[0048] Among them, d1, d2…d n is the aperture of each tuning hole 15;
[0049] The average aperture diameter d0 of the tuning holes 15 ranges from 0.5 mm to 0.8 mm.
[0050] In this embodiment, the tuning hole 15 is provided at the bottom of the first housing 1, and the opening is provided downward. Based on the diameter of the tuning pipe 18, the number of the tuning holes 15 is set to two, and the first tuning net 2 covers the outer surface of the tuning hole 15, wherein the outer surface of the first tuning net 2 is provided with a waterproof coating. In other embodiments, the first tuning net 2 can also be a waterproof tuning net.
[0051] In the embodiment of the present application, the tuning hole 15 is arranged at the bottom of the first shell 1 with the opening facing downward to prevent rainwater from passing through the tuning hole 15 and entering the tuning pipe 18; by limiting the aperture of a single tuning hole 15 and the average aperture of multiple tuning holes 15, the tuning pipe 18 can achieve the tuning function and prevent rainwater from directly passing through the tuning hole 15 and entering the tuning pipe 18; the first tuning net 2 covers the tuning hole 15, and the outer surface of the first tuning net 2 is provided with a waterproof coating to further prevent rainwater from accumulating outside the tuning hole 15 for a long time and then penetrating into the tuning pipe 18; in addition, the position of the first opening is higher than the end of the tuning pipe 18 connected to the rear sound cavity 13, so as to further prevent rainwater from flowing back into and accumulating in the bass pipe 17.
[0052] In this embodiment, the working principle of the rear acoustic cavity 13 of the open-type earphones is as follows: the open-type earphones are started, and the speaker 3 outputs audio to make the speaker diaphragm vibrate, thereby pushing the air in the rear acoustic cavity 13 to vibrate. The air vibration in the rear acoustic cavity 13 forms a piston effect, and air is inhaled or exhausted to the outside of the first shell 1 through the bass duct 17 and the tuning duct 18 respectively, so that the open-type earphones can output bass. Therefore, according to the working principle of the rear acoustic cavity 13, it can be known that this embodiment can achieve effective acoustic debugging in the mid-low frequency band through the cooperation of the bass duct 17 and the tuning duct 18, so as to change the acoustic curve of the mid-low frequency zone, thereby improving the bass effect of the open-type earphones.
[0053] See also Figure 4 As shown, wherein the a1 curve is the acoustic curve of the open earphone with the bass pipe 17 added, and the b1 curve is the acoustic curve of the open earphone without the bass pipe 17; Figure 4 As shown, it can be known that when there is no bass duct 17, the rear acoustic cavity 13 is only connected to the tuning duct 18, and the tuning duct 18 can only balance the sound pressure in the rear acoustic cavity 13. The acoustic curve in the mid-low frequency zone between 20Hz and 1kHz has no obvious fluctuation, and the sound quality of the mid-low frequency band of the open-type headphones deteriorates, and the bass effect of the open-type headphones cannot be improved; when the bass duct 17 is added, the rear acoustic cavity 13 is respectively connected to the tuning duct 18 and the bass duct 17, and the acoustic curve in the mid-low frequency zone between 20Hz and 1kHz is significantly improved, thereby effectively improving the mid-low frequency performance of the open-type headphones and improving the bass effect of the open-type headphones.
[0054] See also Figure 5 As shown, curve a2 is the acoustic curve of the open-type earphone with the tuning hole 15 of the rear acoustic cavity 13 opened, and curve b2 is the acoustic curve of the open-type earphone with the tuning hole 15 of the rear acoustic cavity 13 closed; Figure 5As shown, it can be known that when the tuning hole 15 of the rear acoustic cavity 13 is closed, the rear acoustic cavity 13 is only connected to the bass duct 17. The bass duct 17 and the rear acoustic cavity 13 form a Helmholtz resonance cavity. Under the resonance phenomenon, the acoustic curve of the mid-frequency zone between 600Hz and 1.5kHz of the rear acoustic cavity 13 is severely attenuated, and the acoustic curve of the mid-frequency zone is steeper, which cannot balance the mid- and low-frequency effects of the open-type headphones, affecting the bass effect of the open-type headphones; when the tuning hole 15 of the rear acoustic cavity 13 is opened, the rear acoustic cavity 13 is respectively connected to the tuning duct 18 and the bass duct 17, and the acoustic curve of the mid-frequency zone between 600Hz and 1.5kHz of the acoustic curve is smoother, thereby effectively improving the mid- and low-frequency performance of the open-type headphones and improving the bass effect of the open-type headphones.
[0055] Therefore, the embodiment of the present application can achieve effective acoustic adjustment of the mid-low frequency band of the open-back headphones through the cooperation of the bass duct 17 and the tuning duct 18, so as to change the acoustic curve of the mid-low frequency area, thereby improving the bass effect of the open-back headphones.
[0056] In this embodiment, the main influencing factor in the bass duct 17 is the air quality, wherein the size of the air quality is determined by the diameter and length of the bass duct 17; the main influencing factor in the tuning duct 18 is the damping coefficient, wherein the damping coefficient is determined by the total opening area of the tuning holes 15 and the damping coefficient of the selected first tuning net 2.
[0057] In some embodiments, the length of the bass pipe 17 ranges from 10 to 40 mm, for example, 10 mm, 20 mm, 30 mm, or 40 mm. In this embodiment, the diameter of the bass pipe 17 is 25 mm.
[0058] In some embodiments, the damping coefficient of the first tuning mesh 2 ranges from 100 to 400, for example, 100, 200, 300, 400. In this embodiment, the number of the tuning holes 15 is two, and the aperture of the tuning holes 15 is 0.5 mm.
[0059] In some embodiments, the diameter of the bass duct 17 is 25 mm, the length of the bass duct 17 is 10 mm, the diameter of the plurality of tuning holes 15 is 0.5 mm, and first tuning nets 2 with damping coefficients of 100, 200, 300, and 400 are respectively installed on the first shell 1. Acoustic testing of the open earphone is performed and recorded as an acoustic curve diagram, as shown in FIG. Figure 6 shown.
[0060] See also Figure 6As shown, curve S1 is the acoustic curve of the open earphone with the first tuning net 2 having a damping coefficient of 100 installed at the tuning hole 15; curve S2 is the acoustic curve of the open earphone with the first tuning net 2 having a damping coefficient of 200 installed at the tuning hole 15; curve S3 is the acoustic curve of the open earphone with the first tuning net 2 having a damping coefficient of 300 installed at the tuning hole 15; curve S4 is the acoustic curve of the open earphone with the first tuning net 2 having a damping coefficient of 400 installed at the tuning hole 15; Figure 6 As shown, it can be known that as the damping coefficient of the first tuning mesh 2 gradually increases, the acoustic curve shifts to the low-frequency area on the left, which can effectively improve the mid- and low-frequency performance of the open-ear headphones.
[0061] In some embodiments, the diameter of the bass pipe 17 is 25 mm, the diameter of the plurality of tuning holes 15 is 0.5 mm, a first tuning net 2 with a damping coefficient of 100 is installed on the first shell 1, and the lengths of the bass pipe 17 are 10 mm, 20 mm, 30 mm, and 40 mm, respectively. Acoustic testing of open headphones is performed and recorded as a schematic diagram of an acoustic curve, as shown in FIG. Figure 7 shown.
[0062] See also Figure 7 As shown, the S1' curve is the acoustic curve of the open earphones with a bass duct 17 of 10 mm length; the S2' curve is the acoustic curve of the open earphones with a bass duct 17 of 20 mm length; the S3' curve is the acoustic curve of the open earphones with a bass duct 17 of 30 mm length; the S4' curve is the acoustic curve of the open earphones with the first tuning network with a bass duct 17 of 40 mm length; Figure 7 As shown, it can be seen that as the length of the bass duct 17 gradually increases, the acoustic curve further shifts to the low-frequency area on the left, and the acoustic curve in the mid-low frequency area between 20Hz and 1kHz is significantly improved, thereby effectively improving the mid-low frequency performance of the open-back headphones and improving the bass effect of the open-back headphones.
[0063] Therefore, by Figures 4 to 6 From the analysis of the acoustic curve diagram shown, it can be learned that the cooperation of the bass duct 17, the tuning duct 18 and the first tuning mesh 2 can effectively improve the bass effect of the open-back headphones. In addition, by increasing the length of the bass duct 17 and adjusting the damping coefficient of the first tuning mesh 2, the mid- and low-frequency performance of the open-back headphones can be further improved, thereby further improving the bass effect of the open-back headphones.
[0064] See also Figure 1As shown, in some embodiments, the open earphones also include a second tuning mesh 4, which is installed at the bottom of the first shell 1 and covers the bass outlet hole 14 and the first tuning mesh 2. In this embodiment, the outer surface of the second tuning mesh 4 is provided with a waterproof coating. In other embodiments, the second tuning mesh 4 can also be a waterproof tuning mesh.
[0065] The embodiment of the present application further arranges a second tuning net 4 at the bottom of the first shell 1, and makes the second tuning net 4 waterproof to further prevent rainwater from flowing back into the rear sound cavity 13, and to prevent rainwater from accumulating at the bottom of the first shell 1 for a long time and penetrating into the bass duct 17 or the tuning duct 18, thereby improving the waterproof ability of the open-type earphones.
[0066] See also Figure 2 , Figure 3 As shown, in this embodiment, a sound outlet nozzle is further provided on the first shell 1, and a front sound cavity 19 is also formed in the first shell 1. The front sound cavity 19 is arranged between the speaker accommodating cavity 12 and the sound outlet nozzle. The front sound cavity 19 affects the high-frequency sound effect of the open-ear headphones.
[0067] In some embodiments, the open earphones further include a third tuning mesh 5, which is mounted on the first shell 1 and covers the sound outlet nozzle. In this embodiment, the outer surface of the third tuning mesh 5 is provided with a waterproof coating. In other embodiments, the third tuning mesh 5 can also be a waterproof tuning mesh.
[0068] In the embodiment of the present application, a third tuning net 5 is further provided at the sound outlet nozzle of the first shell 1, and the third tuning net 5 is waterproofed to achieve waterproofing of the front sound cavity 19, thereby improving the waterproof capability of the open earphone.
[0069] See also Figure 3 As shown, in this embodiment, the open earphone also includes a second shell 6, which is installed on the side of the first shell 1 away from the sound outlet nozzle. The second shell 6 is used to fix the speaker 3 in the speaker accommodating cavity 12. The second shell 6 is also provided with a control element and a power supply for controlling the operation of the speaker 3 and supplying power to the speaker 3.
[0070] See also Figure 2 As shown, in some embodiments, the open-type earphones also include an ear hook connection portion 7, and the ear hook connection portion 7 is connected to the first shell 1 to facilitate wearing of the open-type earphones. In this embodiment, the ear hook connection portion 7 is integrally connected to the first shell 1, and the ear hook connection portion 7 is bent 180° and then extends downward to form a semi-arc shape, so that the open-type earphones can be stably hung on the human ear.
[0071] Obviously, the embodiments described above are only some embodiments of the present application, rather than all embodiments. The preferred embodiments of the present application are given in the accompanying drawings, but they do not limit the patent scope of the present application. The present application can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present application more thorough and comprehensive. Although the present application is described in detail with reference to the aforementioned embodiments, for those skilled in the art, it is still possible to modify the technical solutions recorded in the aforementioned specific implementation methods, or to perform equivalent replacement of some of the technical features therein. Any equivalent structure made using the contents of the specification and drawings of this application, directly or indirectly used in other related technical fields, is similarly within the scope of patent protection of this application.
Claims
1. An open-type headphone, characterized in that: It includes a first shell and a first tuning net; The first shell is divided into a speaker accommodating cavity and a rear sound cavity by a partition, and the bottom surface of the first shell is provided with a bass sound outlet hole and at least one tuning hole; A pipe groove is provided in the first shell, the pipe groove has a first opening communicating with the rear sound cavity and a second opening communicating with the bass sound outlet hole, the first opening is located higher than the second opening, and the pipe groove cooperates with the inner wall of the first shell to form a bass pipe; A tuning pipe is formed between the pipe groove and the partition plate, and the tuning pipe is connected between the rear sound cavity and the tuning hole; The first tuning net is installed on the first shell and covers the tuning hole.
2. The open earphone according to claim 1, characterized in that The position of the first opening is higher than the position of one end of the tuning pipe communicating with the rear sound cavity.
3. The open earphone according to claim 1, characterized in that The diameter of the tuning hole ranges from 0.5 mm to 0.8 mm.
4. The open earphone according to claim 3, characterized in that The number of the tuning holes is at least two, and the average aperture d0 of the plurality of tuning holes is calculated by the following formula: d0=SQRT(d1 2 +d2 2 +……+d n 2 ) Among them, d1, d2…d n is the aperture of each tuning hole; The average aperture diameter d0 of the tuning holes ranges from 0.5 mm to 0.8 mm.
5. The open earphone according to claim 1, characterized in that The length of the bass pipe ranges from 10 mm to 40 mm; And / or, the damping coefficient of the first tuning network ranges from 100 to 400.
6. The open earphone according to any one of claims 1 to 5, characterized in that: The open earphone further includes a second tuning net, which is installed at the bottom of the first shell and covers the bass sound outlet and the first tuning net.
7. The open earphone according to claim 6, characterized in that The outer surfaces of the first tuning net and the second tuning net are both provided with a waterproof coating.
8. The open earphone according to claim 6, characterized in that The first shell is also provided with a sound outlet nozzle, and a front sound cavity is formed in the first shell; The front sound cavity is arranged between the speaker accommodating cavity and the sound outlet nozzle.
9. The open earphone according to claim 8, characterized in that The open earphone further includes a third tuning net, which is installed on the first shell and covers the sound outlet nozzle.
10. The open earphone according to any one of claims 1 to 5, characterized in that: The open-type earphone further comprises an ear-hanging connection portion, and the ear-hanging connection portion is connected to the first shell body to facilitate wearing of the open-type earphone.