Housing for controlling low frequency horn and horn

Abstract

The utility model relates to a kind of for controlling the shell for loudspeaker and loudspeaker for low frequency, for controlling the shell for loudspeaker and loudspeaker for low frequency include shell, the shell has for installing the main cavity of loudspeaker monomer and the side cavity in main cavity side, the main cavity and side cavity all have upper end opening;The main cavity is communicated side cavity by main tuning cavity and fine tuning cavity, and the volume of main tuning cavity is greater than the volume of fine tuning cavity;A kind of loudspeaker, including shell and the loudspeaker monomer installed in shell, the shell is the shell for controlling the loudspeaker for low frequency described;It can be the most low-frequency energy generated by subsequent loudspeaker monomer is transported to side cavity by main tuning cavity, realizes the low-frequency energy release while not increasing the thickness of shell, in turn reduce the weight and cost of overall loudspeaker, also realize the fine tuning of low-frequency energy release, in turn highlight the effect of medium-high sound.

Description

Technical Field

[0001] This utility model relates to the field of loudspeaker technology, and in particular to a loudspeaker housing and loudspeaker for controlling low frequencies. Background Technology

[0002] Headphones can be classified according to their transduction method, mainly into dynamic, balanced armature, electrostatic, and isoelectric types. Structurally, they can be divided into semi-open and closed types. Based on wearing style, they can be categorized into in-ear, on-ear, in-ear, and over-ear headphones.

[0003] The existing headphone structure mainly includes a shell, inside which is formed a cavity. The cavity houses a speaker (i.e., a speaker unit). When in use, the sound emitted by the speaker propagates outward. The sound propagates from the sound source to the surrounding areas. The volume is highest at the point closest to the sound source, and gradually decreases as the sound propagates outward.

[0004] However, in order to dissipate energy, the low frequencies in existing headphones are generally discharged by forming a rear cavity at the bottom of the shell, which greatly increases the thickness of the shell, thereby affecting the cost and weight of the speaker.

[0005] Therefore, a new technical solution needs to be developed to address the above problems. Utility Model Content

[0006] This utility model addresses the shortcomings of the existing technology mentioned above. Its main purpose is to provide a speaker housing and speaker for controlling low frequencies. It can transmit most of the low-frequency energy generated by the subsequent speaker unit to the side cavity through the main tuning cavity, so as to release low-frequency energy without increasing the thickness of the housing, thereby reducing the overall weight and cost of the speaker. It also achieves fine-tuning of low-frequency energy release, thereby highlighting the effect of mid and high frequencies.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A speaker housing for controlling low frequencies includes a housing having a main cavity for mounting a speaker unit and a side cavity located beside the main cavity, both the main cavity and the side cavity having an upper opening;

[0009] The main cavity is connected to the side cavity through the main tuning cavity and the fine tuning cavity, and the volume of the main tuning cavity is larger than the volume of the fine tuning cavity.

[0010] As a preferred embodiment, the inner bottom wall of the main cavity is lower than the inner bottom wall of the side cavity.

[0011] As a preferred embodiment, the thickness of the main tuning cavity is greater than the thickness of the fine-tuning cavity.

[0012] As a preferred embodiment, the main tuning cavity is connected to the fine-tuning cavity.

[0013] As a preferred embodiment, the outer bottom wall of the housing has a recess;

[0014] A first convex portion is formed on the inner bottom wall of the main cavity, which is opposite to the concave portion. The concave portion extends upward into the interior of the first convex portion, and the first convex portion connects to the inner side wall of the main cavity.

[0015] A second convex portion is formed on the inner bottom wall of the side cavity, corresponding to the other part of the recess. The second convex portion connects to the inner side wall of the side cavity, and the other part of the recess extends upward into the interior of the second convex portion.

[0016] The main tuning cavity and the fine tuning cavity are recessed from the inner top wall of the concave position upwards. A third convex part is formed on the upper end surface of the first convex part, which is opposite to a portion of both the main tuning cavity and the fine tuning cavity. A portion of both the main tuning cavity and the fine tuning cavity extends upwards into the interior of the third convex part.

[0017] A fourth protrusion is formed on the upper end face of the second protrusion, which is opposite to the other part of the main tuning cavity and the fine tuning cavity. The other part of the main tuning cavity and the fine tuning cavity extends upward into the interior of the fourth protrusion.

[0018] The outer bottom wall of the housing is fitted with a cover for covering the main tuning cavity and the fine tuning cavity.

[0019] As a preferred embodiment, the third protrusion is provided with a first vent hole and a second vent hole. The first vent hole is connected to the main cavity and the main tuning cavity, respectively, and the second vent hole is connected to the main cavity and the fine-tuning cavity, respectively. The diameter of the first vent hole is larger than the diameter of the second vent hole.

[0020] As a preferred embodiment, the fourth protrusion is provided with a third vent hole and a fourth vent hole. The third vent hole is connected to the side cavity and the main tuning cavity, respectively, and the fourth vent hole is connected to the side cavity and the fine-tuning cavity, respectively. The diameter of the third vent hole is larger than the diameter of the fourth vent hole.

[0021] As a preferred embodiment, the fourth protrusion extends integrally upward from the periphery of the fourth vent hole to form a cylindrical portion, and the top of the cylindrical portion is always located within the side cavity.

[0022] As a preferred embodiment, the side cavity is filled with a material that alters acoustic properties.

[0023] A loudspeaker includes a housing and a loudspeaker unit installed within the housing, wherein the housing is the loudspeaker housing for controlling low frequencies.

[0024] Compared with the prior art, this utility model has obvious advantages and beneficial effects. Specifically, it mainly connects the main cavity to the side cavity through the main tuning cavity and the fine-tuning cavity. This allows most of the low-frequency energy generated by the subsequent speaker unit to be transmitted to the side cavity through the main tuning cavity. This achieves the release of low-frequency energy without increasing the thickness of the shell, thereby reducing the overall weight and cost of the speaker. Through the fine-tuning cavity, a small portion of the low-frequency energy can be further transmitted to the side cavity, achieving fine-tuning of the low-frequency energy release, thereby highlighting the effect of mid-high frequencies.

[0025] Secondly, by filling the side cavity with materials that alter acoustic properties, the speed of sound wave propagation can be slowed down, thereby absorbing mid-to-high frequency resonance energy.

[0026] Furthermore, by making the first vent larger than the second vent, and the third vent larger than the fourth vent, low-frequency energy can enter the main tuning cavity more quickly. Moreover, the main tuning cavity is connected to the fine-tuning cavity, which can increase the volume of the corresponding tuning cavity, thereby increasing the path of low-frequency energy and thus better releasing low-frequency energy. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the shell structure according to an embodiment of the present utility model;

[0028] Figure 2 This is a schematic diagram of the shell structure from another angle according to an embodiment of the present invention;

[0029] Figure 3 This is a front view of the housing according to an embodiment of the present utility model;

[0030] Figure 4 This is a rear view of the housing according to an embodiment of the present invention (the covering is not shown);

[0031] Figure 5 This is a schematic diagram of the shell cross-section structure according to an embodiment of the present utility model;

[0032] Figure 6 This is an exploded structural diagram of a speaker unit according to an embodiment of the present invention (protective cover not shown);

[0033] Figure 7 This is a schematic diagram of the speaker assembly structure according to an embodiment of the present invention;

[0034] Figure 8 This is a schematic diagram of the cross-sectional structure of a horn according to an embodiment of the present invention (mainly showing part of the airflow path).

[0035] Explanation of icon numbers:

[0036] 10. Shell

[0037] 11. Concave position

[0038] 12. Main cavity

[0039] 121. The first convex part 122. The third convex part

[0040] 123. First vent hole; 124. Second vent hole

[0041] 13. Side cavity

[0042] 131. Second convex portion 132. Fourth convex portion

[0043] 133. Third vent; 134. Fourth vent

[0044] 135. Cylinder Section

[0045] 14. Covering parts

[0046] 15. Main tuning chamber 16. Fine-tuning chamber

[0047] 20. Speaker unit 201. Chamber

[0048] 21. Framework

[0049] 211. Second mounting hole; 212. Hollowed-out structure

[0050] 213. Limiting step section

[0051] 22. Magnetic circuit assembly

[0052] 221. Sound area 222. Yoke

[0053] 223. Magnet 224. Washer

[0054] 225. Damping components

[0055] 23. Voice coil 24. Diaphragm

[0056] 25. Protective cover 251. First mounting hole. Detailed Implementation

[0057] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0058] like Figures 1 to 8 As shown, a speaker housing for controlling low frequencies includes a housing 10, the outer bottom wall of which has a recess 11.

[0059] The housing 10 has a main cavity 12 for mounting the speaker unit 20 and a side cavity 13 located beside the main cavity 12. Both the main cavity 12 and the side cavity 13 have an upper opening.

[0060] In this embodiment, the inner bottom wall of the main cavity 12 is lower than the inner bottom wall of the side cavity 13. A first protrusion 121 is formed on the inner bottom wall of the main cavity 12, which is opposite to the portion of the recess 11. The portion of the recess 11 extends upward into the interior of the first protrusion 121. The first protrusion 121 is connected to the inner side wall of the main cavity 12.

[0061] A second protrusion 131 is formed on the inner bottom wall of the side cavity 13, which is opposite to another part of the recess 11. The second protrusion 131 is connected to the inner side wall of the side cavity 13, and the other part of the recess 11 extends upward into the interior of the second protrusion 131.

[0062] The main cavity 12 is connected to the side cavity 13 via the main tuning cavity 15 and the fine-tuning cavity 16. The thickness of the main tuning cavity 15 is greater than the thickness of the fine-tuning cavity 16, and the width of the main tuning cavity 15 is greater than the width of the fine-tuning cavity 16. The main tuning cavity 15 is connected to the fine-tuning cavity 16. The volume of the main tuning cavity 15 is greater than the volume of the fine-tuning cavity 16. A cover 14 for covering the main tuning cavity 15 and the fine-tuning cavity 16 is installed on the outer bottom wall of the housing 10 corresponding to the recess 11.

[0063] The main tuning cavity 15 and the fine tuning cavity 16 are recessed from the inner top wall of the recess 11 upwards. A third protrusion 122 is formed on the upper end surface of the first protrusion 121, which is opposite to a portion of the main tuning cavity 15 and the fine tuning cavity 16. A portion of the main tuning cavity 15 and the fine tuning cavity 16 extends upwards into the interior of the third protrusion 122.

[0064] In this embodiment, the third protrusion 122 is provided with a first vent hole 123 and a second vent hole 124. The first vent hole 123 is connected to the main cavity 12 and the main tuning cavity 15, respectively, and the second vent hole 124 is connected to the main cavity 12 and the fine-tuning cavity 16, respectively. The diameter of the first vent hole 123 is larger than the diameter of the second vent hole 124.

[0065] A fourth protrusion 132 is formed on the upper end face of the second protrusion 131, which is opposite to the other part of the main tuning cavity 15 and the fine tuning cavity 16. The other part of the main tuning cavity 15 and the fine tuning cavity 16 extends upward into the interior of the fourth protrusion 132.

[0066] In this embodiment, the fourth protrusion 132 is provided with a third vent hole 133 and a fourth vent hole 134. The third vent hole 133 is connected to the side cavity 13 and the main tuning cavity 15, respectively, and the fourth vent hole 134 is connected to the side cavity 13 and the fine-tuning cavity 16, respectively. The diameter of the third vent hole 133 is larger than the diameter of the fourth vent hole 134.

[0067] The side cavity 13 is filled with a material that alters acoustic properties. In this embodiment, the material altering acoustic properties is a sound-absorbing material or a damping material, but other materials can also be used, and this is not limited to them. Preferably, the sound-absorbing material can be, but is not limited to, sound-absorbing cotton, polyester fiber cotton, or open-pore foam, etc. Similarly, the damping material can be, but is not limited to, silk paper, silk cloth, non-woven fabric, non-woven mesh, sponge, etc. This absorbs energy in a specific frequency band by slowing down the propagation speed of sound waves. This mainly targets mid-to-high frequency resonance.

[0068] Two side cavities 13 are provided, and the two are located on both sides of the main cavity 12. In the two side cavities 13, the volume of one cavity is larger than that of the other.

[0069] The fourth protrusion 132 extends upward integrally from the periphery of the fourth vent hole 134 to form a cylindrical part 135, and the top of the cylindrical part 135 is always located inside the side cavity 13.

[0070] A loudspeaker includes a housing 10 and a loudspeaker unit 20 installed within the housing 10, wherein the housing 10 is the loudspeaker housing for controlling low frequencies.

[0071] The speaker unit 20 forms a chamber 201 within the main cavity 12. The speaker unit 20 includes a frame 21, a magnetic circuit assembly 22, a voice coil 23, a diaphragm 24, and a protective cover 25. The magnetic circuit assembly 22 has a sound output area 221. The diaphragm 24 is located between the frame 21 and the protective cover 25. The protective cover 25 has a first mounting hole 251 extending vertically along its upper and lower sides. The diaphragm 24 is mounted at the first mounting hole 251 and exposed outside the protective cover 25.

[0072] The frame 21 has a second mounting hole 211 that runs through its upper and lower sides, and the magnetic circuit assembly 22 is installed in the second mounting hole 211.

[0073] The frame 21 has several hollow structures 212 around the second mounting hole 211, and the hollow structures 212 are connected to the cavity 201.

[0074] In this embodiment, the magnetic circuit assembly 22 includes a yoke 222, a magnet 223, and a washer 224; the yoke 222, the magnet 223, and the washer 224 are all formed with vent holes that are sequentially aligned and pass through the center, and all the vent holes form the sound output area 221; preferably, the inner wall of the second mounting hole 211 forms a limiting step portion 213, the opening of the yoke 222 is arranged facing upwards and the upper end of the yoke 222 abuts against the limiting step portion 213.

[0075] The diaphragm 24 is connected to the voice coil 23, and the diaphragm 24 covers the magnetic circuit assembly 22 and the hollow structure 212; the sound output area 221 faces the cavity 201. It should be noted that the hollow structure 212 produces a bass effect. The hollow structure 212 is completely open, and the sound output area 221 is covered with a damping element 225.

[0076] Taking the side cavity 13 filled with sound-absorbing material as an example, the following is a general description of the airflow path:

[0077] The airflow path generated by the vibration of the diaphragm 24 is divided into two parts:

[0078] First, the first part of the airflow path passes through the second mounting hole 211 and the sound outlet area 221 in sequence and enters the cavity 201. The second part of the airflow path passes through the hollow structure 212 in sequence and enters the cavity 201.

[0079] Then, most of the airflow in the chamber 201 enters the main tuning chamber 15 through the first vent 123. Part of the airflow in the main tuning chamber 15 enters the side chamber 13 through the third vent 133 and is absorbed by the sound-absorbing material in the side chamber 13. Another part of the airflow in the main tuning chamber 15 enters the side chamber 13 through the fine-tuning chamber 16 and the fourth vent 134 in sequence and is finally absorbed by the sound-absorbing material in the side chamber 13.

[0080] A small portion of the airflow in chamber 201 enters the fine-tuning chamber 16 through the second vent 124. A portion of the airflow in the fine-tuning chamber 16 enters the side chamber 13 through the fourth vent 134 and is finally absorbed by the sound-absorbing material in the side chamber 13. Another portion of the airflow in the fine-tuning chamber 16 enters the side chamber 13 through the main tuning chamber 15 and the third vent 133 in sequence and is finally absorbed by the sound-absorbing material in the side chamber 13.

[0081] In summary, the key design feature of this utility model is that the main cavity is connected to the side cavity through the main tuning cavity and the fine-tuning cavity. This allows most of the low-frequency energy generated by the subsequent speaker units to be transmitted to the side cavity through the main tuning cavity. This achieves low-frequency energy release without increasing the thickness of the housing, thereby reducing the overall weight and cost of the speaker. Through the fine-tuning cavity, a small portion of the low-frequency energy can be further transmitted to the side cavity, achieving fine-tuning of low-frequency energy release and thus highlighting the mid-high frequency effect.

[0082] Secondly, by filling the side cavity with materials that alter acoustic properties, the speed of sound wave propagation can be slowed down, thereby absorbing mid-to-high frequency resonance energy.

[0083] Furthermore, by making the first vent larger than the second vent, and the third vent larger than the fourth vent, low-frequency energy can enter the main tuning cavity more quickly. Moreover, the main tuning cavity is connected to the fine-tuning cavity, which can increase the volume of the corresponding tuning cavity, thereby increasing the path of low-frequency energy and thus better releasing low-frequency energy.

[0084] The above description is merely a preferred embodiment of the present utility model and does not constitute any limitation on the technical scope of the present utility model. Therefore, any minor modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. A speaker housing for controlling low frequencies, characterized in that: It includes a housing, the housing having a main cavity for mounting a speaker unit and a side cavity located beside the main cavity, both the main cavity and the side cavity having an upper opening; The main cavity is connected to the side cavity through the main tuning cavity and the fine tuning cavity, and the volume of the main tuning cavity is larger than the volume of the fine tuning cavity.

2. The horn housing for controlling low frequencies according to claim 1, characterized in that: The inner bottom wall of the main cavity is lower than the inner bottom wall of the side cavity.

3. The horn housing for controlling low frequencies according to claim 1, characterized in that: The thickness of the main tuning cavity is greater than the thickness of the fine-tuning cavity.

4. The horn housing for controlling low frequencies according to claim 1, characterized in that: The main tuning cavity is connected to the fine-tuning cavity.

5. The horn housing for controlling low frequencies according to claim 1, characterized in that: The outer bottom wall of the shell has a recess; A first convex portion is formed on the inner bottom wall of the main cavity, which is opposite to the concave portion. The concave portion extends upward into the interior of the first convex portion, and the first convex portion connects to the inner side wall of the main cavity. A second convex portion is formed on the inner bottom wall of the side cavity, corresponding to the other part of the recess. The second convex portion connects to the inner side wall of the side cavity, and the other part of the recess extends upward into the interior of the second convex portion. The main tuning cavity and the fine tuning cavity are recessed from the inner top wall of the concave position upwards. A third convex part is formed on the upper end surface of the first convex part, which is opposite to a portion of both the main tuning cavity and the fine tuning cavity. A portion of both the main tuning cavity and the fine tuning cavity extends upwards into the interior of the third convex part. A fourth protrusion is formed on the upper end face of the second protrusion, which is opposite to the other part of the main tuning cavity and the fine tuning cavity. The other part of the main tuning cavity and the fine tuning cavity extends upward into the interior of the fourth protrusion. The outer bottom wall of the housing is fitted with a cover for covering the main tuning cavity and the fine tuning cavity.

6. The horn housing for controlling low frequencies according to claim 5, characterized in that: The third protrusion has a first vent hole and a second vent hole. The first vent hole is connected to the main cavity and the main tuning cavity, respectively, and the second vent hole is connected to the main cavity and the fine-tuning cavity, respectively. The diameter of the first vent hole is larger than the diameter of the second vent hole.

7. The horn housing for controlling low frequencies according to claim 5, characterized in that: The fourth protrusion is provided with a third vent hole and a fourth vent hole. The third vent hole is connected to the side cavity and the main tuning cavity, respectively, and the fourth vent hole is connected to the side cavity and the fine-tuning cavity, respectively. The diameter of the third vent is larger than that of the fourth vent.

8. The horn housing for controlling low frequencies according to claim 7, characterized in that: The fourth protrusion extends upward from the periphery of the fourth vent hole to form a cylindrical part, and the top of the cylindrical part is always located in the side cavity.

9. The horn housing for controlling low frequencies according to claim 1, characterized in that: The side cavity is filled with a material that alters acoustic properties.

10. A loudspeaker, characterized in that: It includes a housing and a speaker unit installed inside the housing, wherein the housing is a speaker housing for controlling low frequencies as described in any one of claims 1 to 9.

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