Headphone open ear speaker unit

Abstract

This utility model relates to the field of headphone speaker technology, and more particularly to a speaker unit for open-back headphones, comprising a lower cover, an upper cover, a woofer, and a tweeter, with the woofer and tweeter clamped together by the lower and upper covers. This utility model utilizes a dual-turbine vibration system with the woofer as the sound source and a phase guide tube in the upper cover as the driving force. The tweeter enhances high-frequency extension, radiating sound waves in an omnidirectional manner, resulting in more uniform sound field coverage. The lowest resonant frequency is lower than similar speakers, providing a full bass response, strong high-frequency extension, and comfortable wearing experience. This utility model improves speaker sensitivity while maintaining sound quality, meeting consumer demands. It also achieves low production costs, simple assembly, high production efficiency, high product qualification rate, and excellent acoustic performance, making it a promising candidate for use in headphones.

Description

Technical Field

[0001] This utility model relates to the field of headphone speaker technology, and in particular to a headphone speaker unit for open-back headphones. Background Technology

[0002] As people's living standards improve and their demand for leisure and entertainment increases, the mass production of media such as laptops, desktop computers, tablets, and mobile phones has led to a growing demand for headphones and speakers.

[0003] Currently, most vibration systems on the market consist of thermoplastic polyester, voice coils, and centering supports. While these systems are simple to manufacture and inexpensive, they are prone to modal resonance, resulting in high distortion and poor sound quality. Furthermore, even when technical specifications meet standards, the product's dimensions are subject to significant constraints, requiring ample installation space. This poses considerable challenges during media production, increasing costs and impacting aesthetics.

[0004] In view of this, the inventors aimed to design a new type of speaker unit for open-back headphones. Utility Model Content

[0005] The purpose of this invention is to overcome the problems of insufficient high frequency, narrow sound field, low sensitivity, poor high frequency extension of existing speaker units, as well as the stuffiness and sweating of headphone speaker units, and to provide a headphone open-back headphone speaker unit.

[0006] To achieve the above-mentioned technical objectives and effects, this utility model is implemented through the following technical solution: A speaker unit for open-back headphones includes a lower cover, an upper cover, a woofer, and a tweeter, wherein the lower cover and the upper cover together clamp and mount the woofer and the tweeter. The lower cover includes a lower cover plate with an outer circumference. A positioning core tube is located at the center of the lower cover plate, and a protruding tube is located around the positioning core tube. An annular plate is connected between the bottom ends of the positioning core tube and the protruding tube. The annular plate has several hollow holes along its circumference. The positioning core tube, the protruding tube, and the annular plate together form an annular snap-fit ​​area for easy snap-fit ​​of a woofer. An annular slot is provided inward at the upper end of the protruding tube for easy snap-fit ​​of the upper cover. A first protruding box and a second protruding box are symmetrically arranged between the protruding tube and the circumference. Several first through holes are evenly distributed on the first protruding box. The upper side of the second protruding box is recessed inward to form a rectangular snap-fit ​​area for easy snap-fit ​​of a tweeter. Several second through holes are evenly distributed on the bottom surface of the rectangular snap-fit ​​area.

[0007] Furthermore, in the aforementioned open-back headphone speaker unit, the lower cover plate is provided with several fastening holes along the circumference to facilitate the installation of fasteners.

[0008] Furthermore, in the aforementioned open-back headphone speaker unit, the top cover is composed of a bass reflex tube located in the middle and side cover boxes located on both sides. The specifications of the bass reflex tube are matched with the specifications of the annular slot. The upper end of the bass reflex tube extends inward to form an annular end plate. The side cover boxes can be snapped onto the outside of the first or second convex box.

[0009] Furthermore, in the aforementioned open-back headphone speaker unit, planar strip holes are symmetrically formed on the annular end plate, and arc-shaped noodle holes are formed on the tube body of the bass reflex tube near the tweeter.

[0010] Furthermore, in the aforementioned open-back headphone speaker unit, the woofer adopts a radial magnetic circuit with a wide and uniform magnetic field in the provided magnetic circuit gap. The magnetic circuit of the woofer adopts a central hole design to quickly dissipate heat generated during vibration and relieve pressure. The woofer is located between the diaphragm and the magnetic plate, forming a closed space that retains the vibration of the diaphragm.

[0011] Furthermore, in the aforementioned open-back headphone speaker unit, a light-emitting lamp is added to the inside of the magnetic circuit hole of the woofer.

[0012] Furthermore, in the aforementioned open-back headphone speaker unit, the diaphragm of the bass speaker is made of TPU material.

[0013] Furthermore, in the aforementioned open-back headphone speaker unit, the diaphragm of the tweeter is made of ethyl 2-6 naphthalenedicarboxylate.

[0014] The beneficial effects of this utility model are: 1. This utility model provides a speaker unit for open-back headphones, which uses a woofer as the sound source and a double-turbine vibration system with a phase guide tube in the upper cover as the driving force. The tweeter enhances the high-frequency extension, and the radiated sound waves propagate in an omnidirectional manner, making the sound field coverage more uniform. The lowest resonance frequency is lower than that of similar speakers, making the low-frequency sound full, the high-frequency extension strong, and the wearing comfort. While ensuring the sound quality of the speaker, the sensitivity of the speaker is also improved to meet the requirements of consumers.

[0015] 2. This utility model solves the problems of insufficient treble, narrow sound field, low sensitivity, poor high-frequency extension, and stuffiness and sweating caused by speaker units in existing technologies. The speaker unit of this utility model features high resolution, high extension, wide sound field, high sensitivity, and comfortable wear. While solving the technical problems, it also achieves low production cost, simple assembly, high production efficiency, high product qualification rate, and excellent acoustic performance, making it a promising candidate for use in headphones. The opening in the center of the speaker unit balances the pressure inside and outside the headphones, ensuring comfortable wear and preventing stuffiness. Furthermore, the rear shell amplifies the speaker sound for better hearing. Therefore, one can hear both music and conversations.

[0016] Of course, any product implementing this utility model does not necessarily need to achieve all of the above advantages at the same time. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is an exploded view of the overall structure of this utility model; Figure 2 This is a schematic diagram of the overall structure of this utility model; Figure 3 This is a front view schematic diagram of the entire utility model; Figure 4 This is a structural schematic diagram of the lower cover at one angle in this utility model; Figure 5 This is a schematic diagram of the lower cover from another angle in this utility model; Figure 6 This is a schematic diagram of the structure of the upper cover in this utility model; Figure 7 This is an assembly diagram of the lower cover, bass speaker, and tweeter of this utility model; Figure 8 This is an assembly diagram of the upper cover, bass speaker, and tweeter in this utility model; In the attached diagram, the components represented by each number are as follows: 1-Lower cover, 101-Lower cover plate, 102-Ring edge, 103-Positioning core tube, 104-Protruding tube, 105-Annular plate, 106-Hollow hole, 107-Annular slot, 108-First protruding box, 109-First through hole, 110-Second protruding box, 111-Rectangular snap-fit ​​area, 112-Second through hole, 2-Upper cover, 201-Bass reflex tube, 202-Side cover box, 203-Annular end plate, 204-Flat strip hole, 205-Arc-shaped strip hole, 3-Waist speaker, 4-Tweeter speaker. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0020] like Figures 1-8 As shown, this embodiment provides a speaker unit for an open-back headphone, including a lower cover 1, an upper cover 2, a woofer 3 and a tweeter 4, with the woofer 3 and tweeter 4 clamped together by the lower cover 1 and the upper cover 2.

[0021] In this embodiment, the lower cover 1 includes a lower cover plate 101. The lower cover plate 101 has an outer circumference of a ring edge 102. The lower cover plate 101 has a positioning core tube 103 at its center. The lower cover plate 101 has a protruding tube 104 at the periphery of the positioning core tube 103. An annular plate 105 is connected between the bottom ends of the positioning core tube 103 and the protruding tube 104. The annular plate 105 has several hollow holes 106 along its circumference. The positioning core tube 103, the protruding tube 104 and the annular plate 105 together form an annular snap-fit ​​area that facilitates the snap-fit ​​of the subwoofer 3. The upper end of the convex tube 104 is provided with an annular groove 107 for easy snap-fit ​​installation of the top cover 2. A first convex box 108 and a second convex box 110 are symmetrically provided between the convex tube 104 and the annular edge 102. A number of first through holes 109 are evenly distributed on the first convex box 108. The upper side of the second convex box 110 is recessed inward to form a rectangular snap-fit ​​area 111 for easy snap-fit ​​installation of the tweeter 4. A number of second through holes 112 are evenly distributed on the bottom surface of the rectangular snap-fit ​​area 111.

[0022] In this embodiment, the lower cover plate 101 is provided with a plurality of fastening holes 113 along the circumference to facilitate the installation of fasteners.

[0023] In this embodiment, the upper cover 2 is composed of a phase inverter tube 201 located in the middle and side cover boxes 202 located on both sides. The specifications of the phase inverter tube 201 are matched with the specifications of the annular slot 107. The upper end of the phase inverter tube 201 extends inward to form an annular end plate 203. The side cover box 202 can be snapped onto the outside of the first convex box 108 or the second convex box 110.

[0024] In this embodiment, planar strip holes 204 are symmetrically opened on the annular end plate 203, and arc-shaped noodle holes 205 are opened on the tube body of the phase inverter tube 201 near the tweeter 4.

[0025] In this embodiment, the bass speaker 3 adopts a radial magnetic circuit with a wide and uniform magnetic field in the provided magnetic circuit gap. The magnetic circuit of the bass speaker 3 adopts a central hole design to quickly dissipate the heat generated during vibration and relieve pressure. The bass speaker is located between the diaphragm and the magnetic plate to form a closed space that retains the vibration of the diaphragm.

[0026] In this embodiment, a light is added to the inside of the magnetic circuit hole of the bass speaker 3.

[0027] In this embodiment, the diaphragm of the bass speaker 3 is made of TPU material.

[0028] In this embodiment, the diaphragm of the tweeter 4 is made of ethyl 2-6 naphthalenedicarboxylate.

[0029] A specific application of this embodiment is as follows: The open-back headphone speaker unit provided in this embodiment is composed of a woofer 3, a tweeter 4, a front acoustic cavity with a phase guide tube, and a rear acoustic cavity.

[0030] The woofer 3 employs a radial magnetic circuit, which offers the advantage of providing a wide and uniform magnetic field within the gaps between the magnetic circuit elements. Simultaneously, the magnetic circuit utilizes a central hole design, which allows heat generated during speaker vibration to be dissipated through the central hole. Besides heat dissipation, this also helps alleviate pressure. A closed space is formed below the diaphragm and above the magnetic plate, which can restrict diaphragm vibration; therefore, pressure reduction measures are necessary to extend product lifespan. Furthermore, the central hole design allows for the addition of lighting inside the hole, enhancing sensory comfort and achieving a balance between comfort and aesthetics. Integrating heat dissipation and sound propagation channels is also a clever design concept.

[0031] The diaphragm of the woofer 3 is made of TPU (polyurethane). The high resilience and flexibility of TPU allow the diaphragm to respond quickly to audio signals, reducing distortion and making it particularly suitable for dynamic transient response, improving sound clarity and detail reproduction. The internal damping of the TPU material effectively absorbs excess vibration, reducing resonance and coloration, avoiding a muffled sound, and especially improving the smoothness of the mid-low frequency transition. The low density of TPU reduces diaphragm weight, increases sensitivity, and lowers the driving difficulty, allowing for high-fidelity performance even with a small dynamic driver unit, while saving headphone power consumption.

[0032] The diaphragm of tweeter 4 is made of ethyl 2-6-naphthalenedicarboxylate, a material characterized by low density, high rigidity, high elastic modulus, high temperature resistance, and high tensile strength. This material exhibits extremely high rigidity (high Young's modulus) while maintaining low density, effectively reducing diaphragm splitting distortion and ensuring a fast and accurate high-frequency response. High resolution and transient response: The high rigidity of the diaphragm provides excellent fidelity to subtle signals, making it suitable for high-frequency performance. High temperature resistance and stability: This material is heat-resistant and unaffected by humidity, making it suitable for high-power or long-term operating environments. The front and rear acoustic chambers of the woofer 3 incorporate a bass reflex port. This port alters the propagation path and phase of the sound waves, changing the sound wave reflection path. When the speaker vibrates, the bass reflex port redirects the sound waves 180 degrees, causing the speaker to vibrate vertically. This increases airflow, enhances the bass drive, and thus strengthens the bass output, making the bass more impactful, richer, and with a wider dynamic range.

[0033] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to specific implementation methods. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A headphone open ear speaker unit, characterized by, It includes a lower cover, an upper cover, a woofer, and a tweeter, wherein the lower cover and the upper cover together clamp and mount the woofer and the tweeter; The lower cover includes a lower cover plate with an outer circumference. A positioning core tube is located at the center of the lower cover plate, and a protruding tube is located around the positioning core tube. An annular plate is connected between the bottom ends of the positioning core tube and the protruding tube. The annular plate has several hollow holes along its circumference. The positioning core tube, the protruding tube, and the annular plate together form an annular snap-fit ​​area for easy snap-fit ​​of a woofer. An annular slot is provided inward at the upper end of the protruding tube for easy snap-fit ​​of the upper cover. A first protruding box and a second protruding box are symmetrically arranged between the protruding tube and the circumference. Several first through holes are evenly distributed on the first protruding box. The upper side of the second protruding box is recessed inward to form a rectangular snap-fit ​​area for easy snap-fit ​​of a tweeter. Several second through holes are evenly distributed on the bottom surface of the rectangular snap-fit ​​area.

2. The open headphone speaker unit of claim 1, wherein The lower cover plate has several fastening holes along its circumference to facilitate the installation of fasteners.

3. The headphone speaker unit according to claim 1, characterized in that, The top cover consists of a phase inverter tube in the middle and side cover boxes on both sides. The specifications of the phase inverter tube are matched with the specifications of the annular slot. The upper end of the phase inverter tube extends inward to form an annular end plate. The side cover boxes can be snapped onto the outside of the first or second convex box.

4. The headphone speaker unit according to claim 3, characterized in that, The annular end plate has symmetrical planar strip holes, and the tube body of the phase inverter has an arc-shaped noodle hole near the tweeter.

5. The headphone speaker unit according to claim 4, characterized in that, The subwoofer employs a radial magnetic circuit with a wide and uniform magnetic field in the provided magnetic circuit gap. The magnetic circuit of the subwoofer adopts a central hole design to quickly dissipate heat generated during vibration and relieve pressure. The subwoofer is located between the diaphragm and the magnetic plate, forming a closed space that retains the vibration of the diaphragm.

6. The headphone speaker unit according to claim 5, characterized in that, The subwoofer is equipped with a light source located inside the hole in the magnetic circuit.

7. The headphone speaker unit according to claim 6, characterized in that, The diaphragm of the woofer is made of TPU material.

8. The headphone speaker unit according to claim 1, characterized in that, The diaphragm of the tweeter is made of ethyl 2-6 naphthalenedicarboxylate.

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