Sound cavity structure and earphone

Abstract

The utility model relates to the technical field of earphones, in particular to a sound cavity structure and an earphone, and the sound cavity structure comprises a shell, a sound production unit and a PCBA (Printed Circuit Board Assembly) board. The shell comprises an upper cover and a lower shell which are fixedly connected, the lower shell is provided with a sound outlet hole, and the side wall of the upper cover is provided with an air leakage hole; the sounding unit is fixedly arranged in the lower shell; the PCBA board is fixedly arranged in the upper cover, the PCBA board is electrically connected with the sound production unit, and the air leakage hole is located between the PCBA board and the sound production unit. According to the utility model, the PCBA board is fixedly arranged in the upper cover, a sound cavity cover does not need to be added, only the air leakage hole is arranged between the PCBA board and the sound production unit, all materials of the PCBA board are designed in the upper cover, and the PCBA board and the upper cover are combined into a rear cavity cover through sealing of glue, so that the efficiency is improved, and the operation difficulty is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of earphones, in particular to a sound cavity structure and an earphone. Background Art

[0002] Headphones are usually designed with a front sound cavity and a rear sound cavity. The front sound cavity refers to the cavity part located in front of the headphone sound unit, and the rear sound cavity refers to the cavity part located behind the headphone speaker. In the overall structure of the headphone, the rear sound cavity and the front sound cavity together constitute the main space for sound propagation and resonance. The design of the rear sound cavity has a direct impact on the quality and size of the sound. Its main function is to prevent the low-frequency sound from short-circuiting in the speaker, so that the low-frequency sound can be propagated favorably.

[0003] The common design of the existing rear sound cavity is to set a sound unit rear cavity cover, cover the sound unit with the rear cavity cover, and set an air outlet on one side of the rear cavity cover, which is connected to the tuning hole of the earphone cover, so as to guide the airflow of the rear cavity out of the earphone. The existing sound cavity structure design needs to add a rear cavity cover, and during production, the rear cavity cover needs to be sealed with glue, which increases material costs and production operations. Utility Model Content

[0004] The purpose of the utility model is to provide a sound cavity structure and earphones, at least to solve one of the problems raised in the above background technology.

[0005] The technical solution of the utility model is:

[0006] A sound cavity structure, comprising:

[0007] A housing, the housing comprising an upper cover and a lower housing that are fixedly connected, the lower housing is provided with a sound outlet hole, and the upper cover is provided with an air leakage hole;

[0008] A sound-emitting unit, wherein the sound-emitting unit is fixedly disposed in the lower shell, a sound-emitting surface of the sound-emitting unit faces the lower shell, the sound-emitting unit and the lower shell form a front sound cavity, and the sound outlet is connected to the front sound cavity;

[0009] PCBA board, the PCBA board is fixedly arranged in the upper cover, the PCBA board is electrically connected to the sound unit, the PCBA board, the sound unit and the shell form a rear sound cavity, the air vent is located between the PCBA board and the sound unit, and the air vent is communicated with the rear sound cavity.

[0010] Furthermore, the air leakage hole is arranged on the side wall of the upper cover, and the air leakage hole faces the upper part of the auricle.

[0011] Furthermore, a curved surface area is provided at the bottom end of the lower shell, and the sound outlet is located in the curved surface area.

[0012] Furthermore, a positioning buckle and a positioning column are provided in the upper cover, the positioning buckle is buckled with the PCBA board, and the positioning column passes through the PCBA board.

[0013] Furthermore, a glue groove is provided at the bottom of the upper cover, and a fixing ring is provided at the top of the lower shell, and the fixing ring is embedded in the glue groove.

[0014] Furthermore, a clamping groove is provided on the side wall of the glue groove, and a clamping ring is provided on the side wall of the fixing ring, and the clamping ring is clamped into the clamping groove.

[0015] Furthermore, a charging pin is provided in the lower shell, the charging pin is electrically connected to the PCBA board, and the lower surface of the charging pin and the lower surface of the lower shell are located in the same plane.

[0016] Furthermore, magnetic blocks are arranged between the charging pins.

[0017] Furthermore, the lower shell is provided with a charging slot, a sound-emitting seat and a magnetic seat, the charging needle is fixedly arranged in the charging slot, the sound-emitting unit is fixedly arranged in the sound-emitting seat, and the magnetic block is fixedly arranged in the magnetic seat.

[0018] Furthermore, an indicator light is provided between the PCBA board and the upper cover, the indicator light is electrically connected to the PCBA board, a light trough is provided on the upper cover, and the indicator light is located in the light trough.

[0019] The utility model also provides an earphone, comprising the above-mentioned sound cavity structure, and also comprising an ear hook and a battery part which are fixedly connected, wherein the battery part is electrically connected to the PCBA board.

[0020] The present invention provides a sound cavity structure and earphone through improvement, which have at least the following improvements and beneficial effects compared with the prior art:

[0021] 1. The utility model fixes the PCBA board in the upper cover, does not need to add a sound cavity cover, only sets the vent hole between the PCBA board and the sound unit, designs all the materials of the PCBA board in the upper cover, and seals the PCBA and the upper cover by glue to replace the rear cavity cover, thereby saving installation steps, improving production efficiency and reducing installation difficulty.

[0022] 2. The utility model helps to form a relatively stable acoustic environment inside the earphone by setting the vent hole toward the upper part of the auricle, which can reduce the impact of external noise on the sound cavity structure of the earphone and reduce the impact on the sound quality of the earphone. When the vent hole is facing the upper part of the auricle, the airflow path is more reasonable, which helps to reduce wind noise and other noise generated by airflow. In outdoor or sports environments, by designing the vent hole toward the upper part of the auricle, the impact of frontal wind noise on sound quality can be significantly reduced, providing a clearer sound experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The utility model is further explained below in conjunction with the accompanying drawings and embodiments:

[0024] Figure 1 It is a structural explosion diagram of the sound cavity structure of the utility model;

[0025] Figure 2 It is a partial structural schematic diagram of the sound cavity structure described in the utility model;

[0026] Figure 3 It is a structural schematic diagram of the upper cover of the utility model;

[0027] Figure 4 It is a partial structural exploded diagram of the sound cavity structure of the utility model;

[0028] Figure 5 It is a partial structural schematic diagram of the housing of the utility model;

[0029] Figure 6 It is a structural schematic diagram of the earphone of the utility model;

[0030] Figure 7 It is a structural schematic diagram of the lower shell of the utility model.

[0031] Description of reference numerals:

[0032] 1. Shell; 2. Sound unit; 3. PCBA board; 4. Front sound cavity; 5. Rear sound cavity; 6. Ear hook;

[0033] 7. Battery unit; 11. Upper cover; 12. Lower shell; 13. Charging pin; 14. Magnetic block; 15. Indicator light;

[0034] 111, air vent; 112, positioning buckle; 113, positioning column; 114, glue groove; 115, card slot;

[0035] 116, lamp slot; 121, sound outlet; 122, fixing ring; 123, clamping ring; 124, charging slot;

[0036] 125. Sounding seat; 126. Magnetic seat; 127. Curved area. DETAILED DESCRIPTION

[0037] The present invention is described in detail below, and the technical solutions in the embodiments of the present invention are described clearly and completely.

[0038] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0039] In the description of the present utility model, the meaning of "several" is one or more, the meaning of "many" is two or more, "greater than", "less than", "exceed", etc. are understood to exclude the number, and "above", "below", "within", etc. are understood to include the number. It should also be understood that the term "and / or" used in the specification of this application and the attached claims refers to any combination of one or more of the associated listed items and all possible combinations, and includes these combinations. The terms "include", "comprise", "have" and their variations all mean "including but not limited to", unless otherwise specifically emphasized.

[0040] In addition, in the description of the present application specification and the appended claims, the terms "first", "second", "third", etc. are only used to distinguish the descriptions and cannot be understood as indicating or implying relative importance.

[0041] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0042] The common design of the existing earphone sound cavity structure is to set a sound unit rear cavity cover, cover the sound unit with the rear cavity cover, and set an air outlet on one side of the rear cavity cover, which is connected to the tuning hole of the earphone cover, so as to guide the airflow of the rear cavity out of the earphone. The existing sound cavity structure design needs to add a rear cavity cover, and during production, the rear cavity cover needs to be sealed with glue, which increases material costs and production operations.

[0043] The utility model provides a sound cavity structure and earphones through improvement. The technical solution of the utility model is:

[0044] like Figure 1 As shown,

[0045] A sound cavity structure comprises: a shell 1, a sound unit 2 and a PCBA board 3.

[0046] The housing 1 includes an upper cover 11 and a lower shell 12 that are fixedly connected. The lower shell 12 is provided with a sound outlet 121, and the upper cover 11 is provided with an air leakage hole 111. The sound-generating unit 2 is used to generate sound. When the sound-generating unit 2 generates sound waves, these sound waves are sent to the user's ear canal through the sound outlet 121, so that the user can hear the sound. The air leakage hole 111 is used to prevent the low-frequency sound in the sound-generating unit 2 from being short-circuited, ensuring that the low-frequency sound can be transmitted smoothly, so that the user feels that the sound is mellow.

[0047] like Figure 2 As shown, the sound unit 2 is fixedly disposed in the lower shell 12 , the sound-emitting surface of the sound unit 2 faces the lower shell 12 , the sound unit 2 and the lower shell 12 form a front sound cavity 4 , and the sound outlet 121 is connected to the front sound cavity 4 .

[0048] The front sound cavity 4 is used to enhance the high-frequency performance of the earphone, making the sound clearer and brighter, and can also effectively correct high-frequency noise and improve the purity of the sound. When the earphone with the sound cavity structure described in this embodiment plays music or voice, the sound quality of the high-frequency part is clearer and the harsh or unnecessary noise is reduced.

[0049] like Figure 2 As shown, the PCBA board 3 is fixedly disposed in the upper cover 11. In some embodiments, the PCBA board 3 can be sealed and fixed to the upper cover 11 by glue. The PCBA board 3 is electrically connected to the sound unit 2, and the vent hole 111 is located between the PCBA board 3 and the sound unit 2.

[0050] By fixing the PCBA board 3 in the upper cover 11, there is no need to add a sound cavity cover. Only by setting the vent hole 111 between the PCBA board 3 and the sound unit 2, all the materials of the PCBA board 3 are designed in the upper cover 11, and the PCBA and the upper cover 11 are combined into a rear cavity cover by sealing with glue, so that the efficiency is improved and the operation difficulty is reduced.

[0051] like Figure 2 As shown, the PCBA board 3 , the sound unit 2 and the housing 1 form a rear sound cavity 5 , and the air leakage hole 111 is connected to the rear sound cavity 5 .

[0052] The rear sound cavity 5 and the vent hole 111 are connected to prevent the low-frequency sound from being short-circuited in the sound-emitting unit 2 . By providing the rear sound cavity 5 , a better low-frequency response can be provided, making the sound more powerful and full.

[0053] In some embodiments, the vent hole 111 is disposed on the side wall of the upper cover 11, and the vent hole 111 faces the upper part of the auricle. When a person wears headphones, noise usually comes from the front or side of the person. By setting the vent hole 111 to face the upper part of the auricle, it helps to form a relatively stable internal acoustic environment, which can reduce the impact of external noise on the sound cavity structure of the headphone and reduce the impact on the sound quality of the headphone; when the vent hole 111 faces the upper part of the auricle, the air flow path is more reasonable, which helps to reduce wind noise and other noises caused by airflow; in outdoor or sports environments, by designing the vent hole 111 to face the upper part of the auricle, the impact of frontal wind noise on sound quality can be significantly reduced, providing a clearer sound experience.

[0054] like Figure 7 As shown, the bottom end of the lower shell 12 is provided with a curved surface area 127, and the sound outlet 121 is located in the curved surface area 127. The design of the curved surface area 127 can fit the shape of the concha cavity more naturally, ensure the stability of wearing, and reduce slipping or discomfort caused by improper wearing. By arranging the sound outlet 121 in the curved surface area 127, the sound outlet 121 is aligned with the ear canal, providing a better hearing experience for the user.

[0055] like Figure 3 As shown, a positioning buckle 112 and a positioning column 113 are provided in the upper cover 11 , the positioning buckle 112 is buckled with the PCBA board 3 , and the positioning column 113 passes through the PCBA board 3 .

[0056] The positioning posts 113 and the positioning buckles 112 can ensure that the PCBA board 3 is accurately positioned in the upper cover 11, preventing it from moving or dislocating during use, and avoiding the movement or dislocation of the PCBA from affecting the sealing of the rear sound cavity 5. The positioning posts 113 and the positioning buckles 112 are provided to help ensure a stable connection between the PCBA board 3 and the upper cover 11, thereby ensuring the sound leakage effect of the rear sound cavity 5, so that the sound cavity structure described in this embodiment can provide a better sound effect.

[0057] like Figure 5As shown, a glue groove 114 is provided at the bottom of the upper cover 11, and a fixing ring 122 is provided at the top of the lower shell 12. The glue groove 114 and the fixing ring 122 cooperate to seal and fix the upper cover 11 and the lower shell 12. During installation, glue can be injected into the glue groove 114, and then the fixing ring 122 can be placed in the glue groove 114 to complete the sealing and fixing of the upper cover 11 and the lower shell 12. The fixing ring 122 is embedded in the glue groove 114. A clamping groove 115 is provided on the side wall of the glue groove 114, and a clamping ring 123 is provided on the side wall of the fixing ring 122, and the clamping ring 123 is clamped into the clamping groove 115. The clamping ring 123 and the clamping groove 115 are used to increase the friction between the upper cover 11 and the lower shell 12 to ensure a tight connection between them.

[0058] like Figure 4 As shown, a charging pin 13 is provided in the lower shell 12, and the charging pin 13 is electrically connected to the PCBA board 3. The charging pin 13 is used to transmit electricity. When the charging pin 13 contacts a charging source, such as a charger or a power adapter, it can transmit current for charging. The lower surface of the charging pin 13 is located in the same plane as the lower surface of the lower shell 12. By locating the lower surface of the charging pin 13 in the same plane as the lower surface of the lower shell 12, there is no step between the lower shell 12 and the charging pin 13, so it is not easy to accumulate dirt, and it is more convenient to clean.

[0059] like Figure 4 As shown, a magnetic block 14 is provided between the charging pins 13. The magnetic block 14 can automatically align and adsorb the charging pins 13 with the external charging head during charging through magnetic adsorption, without the user having to laboriously perform plugging and unplugging operations, thus simplifying the connection steps and improving the convenience of use.

[0060] like Figure 4 As shown, the lower shell 12 is provided with a charging slot 124, a sounding seat 125 and a magnetic seat 126, the charging needle 13 is fixedly arranged in the charging slot 124, the sounding unit 2 is fixedly arranged in the sounding seat 125, and the magnetic block 14 is fixedly arranged in the magnetic seat 126. The charging slot 124, the sounding seat 125 and the magnetic seat 126 are used to provide positioning and fixation to prevent the charging needle 13, the sounding unit 2 and the magnetic block 14 from shaking in the lower shell 12, so as to ensure that each component can be used normally.

[0061] like Figure 1 and Figure 3As shown, an indicator light 15 is provided between the PCBA board 3 and the upper cover 11, and the indicator light 15 is electrically connected to the PCBA board 3. The indicator light 15 is used to display the setting status. For example, when charging is required, the indicator light 15 will usually light up or flash to remind the user of the power status. When the headset is in pairing mode, the indicator light 15 can also light up or flash to remind the user that the pairing operation can be performed at this time. A light groove 116 is provided on the upper cover 11, and the indicator light 15 is located in the light groove 116. The light groove 116 is used to accommodate and fix the indicator light 15.

[0062] The utility model also provides an earphone, comprising the above-mentioned sound cavity structure, and also comprising a fixedly connected ear hook 6 and a battery unit 7, wherein the battery unit 7 is electrically connected to the PCBA board 3. The ear hook 6 is used to hang the earphone on the ear of the user, and the battery unit 7 is used to provide power to the PCBA board 3, the sound unit 2, the indicator light 15 and other components in the housing 1.

[0063] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by any technician familiar with the technical field within the technical scope disclosed in the present invention should be included in the protection scope of the present invention.

Claims

1. A sound cavity structure, characterized in that: include: A housing, the housing comprising an upper cover and a lower housing that are fixedly connected, the lower housing is provided with a sound outlet hole, and the upper cover is provided with an air leakage hole; A sound-emitting unit, wherein the sound-emitting unit is fixedly disposed in the lower shell, a sound-emitting surface of the sound-emitting unit faces the lower shell, the sound-emitting unit and the lower shell form a front sound cavity, and the sound outlet is connected to the front sound cavity; PCBA board, the PCBA board is fixedly arranged in the upper cover, the PCBA board is electrically connected to the sound unit, the PCBA board, the sound unit and the shell form a rear sound cavity, the air vent is located between the PCBA board and the sound unit, and the air vent is communicated with the rear sound cavity.

2. The sound cavity structure according to claim 1, characterized in that: The air leakage hole is arranged on the side wall of the upper cover, and the air leakage hole faces the upper part of the auricle.

3. The sound cavity structure according to claim 1, characterized in that: The bottom end of the lower shell is provided with a curved surface area, and the sound outlet is located in the curved surface area.

4. The sound cavity structure according to claim 1, characterized in that: A positioning buckle and a positioning column are arranged in the upper cover, the positioning buckle is buckled with the PCBA board, and the positioning column passes through the PCBA board.

5. The sound cavity structure according to claim 1, characterized in that: A glue groove is provided at the bottom of the upper cover, and a fixing ring is provided at the top of the lower shell, and the fixing ring is embedded in the glue groove.

6. The sound cavity structure according to claim 5, characterized in that: The side wall of the glue groove is provided with a clamping groove, and the side wall of the fixing ring is provided with a clamping ring, and the clamping ring is clamped into the clamping groove.

7. The sound cavity structure according to claim 1, characterized in that: A charging pin is disposed in the lower shell, the charging pin is electrically connected to the PCBA board, and the lower surface of the charging pin and the lower surface of the lower shell are located in the same plane.

8. The sound cavity structure according to claim 7, characterized in that: A magnetic block is arranged between the charging pins, a charging slot, a sound-emitting seat and a magnetic seat are arranged on the lower shell, the charging pin is fixedly arranged in the charging slot, the sound-emitting unit is fixedly arranged in the sound-emitting seat, and the magnetic block is fixedly arranged in the magnetic seat.

9. The sound cavity structure according to claim 1, characterized in that: An indicator light is arranged between the PCBA board and the upper cover, the indicator light is electrically connected to the PCBA board, a light trough is arranged on the upper cover, and the indicator light is located in the light trough.

10. An earphone, characterized in that: The sound cavity structure comprises the sound cavity structure according to any one of claims 1 to 9, and further comprises an ear hook and a battery part which are fixedly connected, and the battery part is electrically connected to the PCBA board.

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