CN214507348U

CN214507348U - Earphone driver

Info

Publication number: CN214507348U
Application number: CN202120409337.3U
Authority: CN
Inventors: 符建
Original assignee: Razer Asia Pacific Pte Ltd
Current assignee: Razer Asia Pacific Pte Ltd
Priority date: 2020-02-24
Filing date: 2021-02-24
Publication date: 2021-10-26
Anticipated expiration: 2031-02-24
Also published as: TWM612373U; DE202021100869U1; AU2020100266A4

Abstract

A headphone driver comprising a circular base structure having: a first annular disk surface and a second annular disk surface arranged coaxially and oriented in the same axial direction, the first annular disk surface having an inner radius equal to or greater than an outer radius of the second annular disk surface, and the first annular disk surface being offset from the second annular disk surface in the axial direction; a first set of through holes distributed along a surface of the first annular disk; a second set of through-holes distributed along the surface of the second annular disc; and a central through cavity within the inner circumference of the second annular disc surface. The headphone driver includes: a permanent ring magnet disposed within the inner circumference of the second annular disc surface; the diaphragm is arranged on the circular base structure; and a coil attached to a central region of the diaphragm and suspended relative to the permanent ring magnet to act with the permanent ring magnet to vibrate the diaphragm when current is passed through.

Description

Earphone driver

Technical Field

Various embodiments are generally directed to a headphone driver.

Background

Conventional earphones mostly include a dynamic coil type speaker driver and are classified as a closed-back earphone or an open-back earphone. However, the sound quality produced by these conventional headsets is inadequate. For example, the sound of a step produced by a conventional headset is often unclear during a game. In addition, the sound of a gunshot or the communicating player's voice or human voice may be unclear, bored or muted compared to other sounds produced during the game.

Accordingly, there is a need for an improved headphone driver that can improve the sound quality of headphones.

SUMMERY OF THE UTILITY MODEL

According to various embodiments, a headphone driver is provided. The headphone driver may comprise a circular base structure. The circular base structure may comprise a first annular disc surface and a second annular disc surface arranged in a coaxial manner and oriented in the same axial direction, the first annular disc surface having an inner radius equal to or greater than an outer radius of the second annular disc surface, and the first annular disc surface being offset in the axial direction from the second annular disc surface in such a way that a radial-inward-step-down profile is formed from the first annular disc surface to the second annular disc surface. The circular base structure may comprise a first set of through-going holes distributed along the first annular disc surface, each through-going hole of the first set of through-going holes having a hole axis parallel to the axial direction. The circular base structure may comprise a second set of through-going holes distributed along the second annular disc surface, each through-going hole of the second set of through-going holes having a hole axis parallel to the axial direction. The circular base structure may comprise a central through cavity within the inner circumference of the second annular disc surface. The earphone driver may include a permanent ring magnet disposed within the inner circumference of the second annular disc surface. The headset driver may include a diaphragm disposed over the circular base structure so as to cover the first annular disk surface, the second annular disk surface, and the permanent ring magnet. The headset driver may include a coil attached to a central region of the diaphragm and suspended relative to the permanent ring magnet in a manner capable of acting with the permanent ring magnet to vibrate the diaphragm when current is passed through the coil.

Drawings

In the drawings, like reference numerals generally refer to like parts throughout the different views. The drawings are not necessarily to scale, emphasis instead often being placed upon illustrating the principles of the invention. In the following description, various embodiments are described with reference to the following drawings, in which:

fig. 1A shows a schematic diagram of a cross-section of a headphone driver according to various embodiments;

fig. 1B shows a schematic diagram of a cross-sectional exploded view of the headphone driver of fig. 1A, in accordance with various embodiments;

FIG. 1C shows a schematic diagram of a top view of the headphone driver of FIG. 1A without a diaphragm of the headphone driver, in accordance with various embodiments;

fig. 2A shows a cross-sectional view of a headphone driver according to various embodiments;

fig. 2B shows an exploded view of the headphone driver of fig. 2A, in accordance with various embodiments;

fig. 3A shows a bottom perspective view of an assembled circular base structure and circular base tray of the headphone driver of fig. 2A in accordance with various embodiments;

fig. 3B shows a top perspective view of an assembled circular base structure and circular base tray of the headphone driver of fig. 2A, in accordance with various embodiments; and

fig. 4 shows a cross-section of a headset having the headset driver of fig. 2A and 2B, in accordance with various embodiments.

Detailed Description

The embodiments described below in the context of the apparatus are similarly valid for the respective methods, and vice versa. Further, it will be understood that the embodiments described below may be combined, e.g., a portion of one embodiment may be combined with a portion of another embodiment.

It should be understood that the terms "on … …," "above … …," "top," "bottom," "down," "side," "back," "left," "right," "front," "lateral," "side," "up," "down," and the like when used in the following description are used for convenience and to aid in understanding relative position or orientation, and are not intended to limit the orientation of any device or structure or any portion of any device or structure. In addition, the singular terms "a", "an" and "the" include plural references unless the context clearly dictates otherwise. Similarly, the word "or" is intended to include "and" unless the context clearly indicates otherwise.

Various embodiments are generally directed to a headphone driver. According to various embodiments, the headphone driver may improve the sound quality of the headphones. According to various embodiments, the headphone driver may be a dynamic driver. According to various embodiments, the headphone driver may be configured to improve the quality of mid-range (or mid-range) and/or low mid-range (or low mid-range) sounds, which are typically associated with footsteps and/or gunshots in gaming applications. According to various embodiments, the headphone driver may be configured to improve sensitivity to mid-frequency and/or low mid-frequency sounds. According to various embodiments, the cavity volume within the headphone driver may be configured to increase the sensitivity of mid-and/or mid-low frequency sounds. According to various embodiments, the headphone driver may comprise a tuning tube or a tuning orifice. According to various embodiments, the number, configuration and arrangement of tuning tubes or holes in the headphone driver may be configured to increase the sensitivity of mid and/or mid low frequency sounds. According to various embodiments, cavity volumes and/or damping corresponding to different regions of a diaphragm of a headphone driver may be configured to improve sound quality. According to various embodiments, the base structure or the drive carrier may be configured to include at least one high frequency tuning tube or tuning aperture, at least one medium frequency tuning tube or tuning aperture, and at least one low frequency tuning tube or tuning aperture. According to various embodiments, the base structure of the headphone driver may be configured to divide the generated sound into three parts, namely a high frequency, a medium frequency and a low frequency. In various embodiments, the sound may be effectively adjusted so that the sound produced by the headphone driver may be more loud and clear. In addition, low frequency sounds may be more powerful and high frequency sounds may be richer.

Fig. 1A shows a schematic diagram of a cross-sectional view of a headphone driver 100 according to various embodiments. Fig. 1B shows a schematic diagram of a cross-sectional exploded view of the headphone driver 100 of fig. 1A, in accordance with various embodiments. Fig. 1C shows a schematic diagram of a top view of the headphone driver 100 of fig. 1A without the diaphragm 110 of the headphone driver 100, in accordance with various embodiments. According to various embodiments, the headphone driver 100 may include a circular base structure 120 (or driver carrier or driver frame). According to various embodiments, the circular base structure 120 may serve as a frame or base or cradle that imparts or provides a physical form or body to the headphone driver 100.

According to various embodiments, the circular base structure 120 may include a first annular disk surface 122 and a second annular disk surface 126 arranged in a coaxial manner. According to various embodiments, each of the first and second annular disk surfaces 122, 126 may be an annular surface or region bounded by two concentric circles (i.e., an outer circle and an inner circle having a common center point) forming an inner circumference 121, an inner circumference 125, and

outer circumferences

123, 127, respectively. Thus, the first annular disc surface 122 may be defined by an inner circumference 121 and an outer circumference 123. Similarly, the second annular disc surface 126 may be defined by an inner circumference 125 and an outer circumference 127. According to various embodiments, the center point 124 of the first annular disk surface 122 and the center point 128 of the second annular disk surface 126 may lie on a common axis 129. The center point 124 of the first annular disc surface 122 may be the common center of the inner circumference 121 and the outer circumference 123. The center point 128 of the second annular disc surface 126 may be a common center of the inner circumference 125 and the outer circumference 127.

According to various embodiments, the first annular disk surface 122 and the second annular disk surface 126 may be oriented in the same axial direction 129 a. Accordingly, the first annular disk surface 122 and the second annular disk surface 126 may face in the same direction along a common axis 129. Thus, the first and second annular disk surfaces 122, 126 may be oriented perpendicular to the common axis 129 in a manner facing the same axial direction 129a, whereby the first and second annular disk surfaces 122, 126 may be parallel to each other.

According to various embodiments, the inner radius of the first annular disk surface 122 is equal to or greater than the outer radius of the second annular disk surface 126. Accordingly, the radius of the inner circumference 121 of the first annular disk surface 122 may be equal to or greater than the radius of the outer circumference 127 of the second annular disk surface 126. Thus, the second annular disc surface 126 may be enclosed or surrounded or confined within the inner circumference 121 of the first annular disc surface 122.

According to various embodiments, the first annular disk surface 122 may be offset in the axial direction 129a from the second annular disk surface 126 in such a way as to form a radially inward stepped profile from the first annular disk surface 122 to the second annular disk surface 126. Accordingly, the center point 124 of the first annular disk surface 122 may be offset from the center point 128 of the second annular disk surface 126 in the axial direction 129a such that the alignment of the first annular disk surface 122 along the common axis 129 in the axial direction 129a may precede the alignment of the second annular disk surface 126. Thus, the second annular disc surface 126 may form a recessed or receding surface with respect to the first annular disc surface 122, the recessed or receding surface receding from the first annular disc surface 122 in a direction opposite the axial direction 129a along the common axis 129. Thus, the first and second annular disk surfaces 122, 126 may form a stepped profile in the inward radial direction toward the common axis 129 from the outer circumference 123 of the first annular disk surface 122 to the inner circumference 125 of the second annular disk surface 126.

According to various embodiments, the circular base structure 120 may include a first set of through-holes 132 distributed along the first annular disk surface 122. According to various embodiments, the first set of through-holes 132 may include two or more through-holes 132, or a plurality of through-holes 132. According to various embodiments, the first set of through-holes 132 may be arranged and spaced apart in a circular arrangement or at equal intervals in the circumferential direction along the first annular disk surface 122. Thus, the first set of through-holes 132 may be evenly dispersed or ordered across the first annular disk surface 122 in a manner that follows the curvature of the first annular disk surface 122 so as to surround or encircle the center point 124 of the first annular disk surface 122. According to various embodiments, the first set of through-going holes 132 may act as tuning tubes or holes for low frequency sounds.

According to various embodiments, each through-hole 132 of the first set of through-holes may have a hole axis 134 parallel to the axial direction 129 a. Accordingly, each through-hole 132 of the first set of through-holes may extend from the first annular disc surface 122 through the circular base structure 120 in a manner parallel to the common axis 129. Thus, each through-hole 132 of the first set of through-holes may be a straight hole extending perpendicularly from the first annular disk surface 122 and through the circular base structure 120.

According to various embodiments, the circular base structure 120 may include a second set of through-holes 136 distributed along the second annular disk surface 126. According to various embodiments, the second set of apertures 136 may include two or more apertures 136, or a plurality of apertures 136. According to various embodiments, the second set of through-going holes 136 may be arranged and spaced apart along the second annular disk surface 126 in a circular arrangement or at equal intervals in the circumferential direction. Thus, the second set of through-holes 136 may be evenly dispersed or ordered across the second annular disc surface 126 in a manner that follows the curvature of the second annular disc surface 126 so as to surround or encircle the center point 128 of the second annular disc surface 126. According to various embodiments, the second set of through-going holes 136 may act as tuning tubes or holes for mid-frequency sound.

According to various embodiments, each through-hole 136 of the second set of through-holes may have a hole axis 138 parallel to the axial direction 129 a. Accordingly, each through-hole 136 of the second set of through-holes may extend from the second annular disc surface 126 through the circular base structure 120 in a manner parallel to the common axis 129. Thus, each through-hole 136 of the second set of through-holes may be a straight hole extending perpendicularly from the second annular disk surface 126 and through the circular base structure 120.

According to various embodiments, the circular base structure 120 may include a central through-cavity 130 within the inner circumference 125 of the second annular disk surface 126. According to various embodiments, the second annular disc surface 126 may surround or encircle the central through cavity 130. Accordingly, a central through cavity 130 may be defined within or inside the inner circumference 125 of the second annular disk surface 126. According to various embodiments, the central through cavity 130 may be coaxial with the second annular disk surface 126. Accordingly, a cavity axis centered through the cavity 130 may coincide with the common axis 129. Thus, the central through cavity 130 may extend along the common axis 129 perpendicular to the second annular disc surface 126.

According to various embodiments, the headphone driver 100 may include a permanent ring magnet 150. According to various embodiments, the permanent ring magnet 150 may be an annular permanent magnet having a central bore 152. According to various embodiments, the permanent ring magnet 150 may be disposed within the inner circumference 125 of the second annular disc surface 126. According to various embodiments, a permanent ring magnet 150 may be disposed and fitted in or within the central through-cavity 130 of the circular base structure 120. According to various embodiments, the second annular disc surface 126 may surround or encircle the permanent ring magnet 150. Accordingly, the permanent ring magnet 150 may be defined within or inside the inner circumference 125 of the second annular disc surface 126. According to various embodiments, the permanent ring magnet 150 may be coaxial with the second annular disc surface 126. Accordingly, the geometric axis of the permanent ring magnet 150 may coincide with the common axis 129. According to various embodiments, the central bore 152 of the permanent ring magnet may act as a tuning bore or tube for high frequency sounds.

According to various embodiments, the headphone driver 100 may include a diaphragm 110. According to various embodiments, the diaphragm 110 may be disposed over the circular base structure 120. Accordingly, the diaphragm 110 may be placed over or on top of the circular base structure 120. According to various embodiments, the diaphragm 110 may cover the first annular disk surface 122, the second annular disk surface 126, and the permanent ring magnet 150. Accordingly, the diaphragm 110 may extend or be placed over the first annular disk surface 122, the second annular disk surface 126, and the permanent ring magnet 150 to conceal the first annular disk surface 122, the second annular disk surface 126, and the permanent ring magnet 150 or to form a roof over the first annular disk surface 122, the second annular disk surface 126, and the permanent ring magnet 150. According to various embodiments, the diaphragm 110 may have a circular shape, and the peripheral edge 112 of the diaphragm 110 may be coupled to the peripheral edge portion 120a of the circular base structure 120. According to various embodiments, the peripheral edge portion 120a of the circular base structure 120 may be along an outer circumference of the first annular disk surface 122. According to various embodiments, the peripheral edge portion 120a of the circular base structure 120 may be an upstanding circular wall extending perpendicularly from the outer circumference of the first annular disc surface 122 in the axial direction 129 a.

According to various embodiments, the headphone driver 100 may include a coil 160. According to various embodiments, the coil 160 may act as a voice coil or an electromagnetic actuator. According to various embodiments, the coil 160 may be attached to the central region 114 of the diaphragm 110 with a first coil end (or upper coil end) of the coil 160 abutting the lower surface of the diaphragm 110 and a second coil end (or lower coil end) of the coil 160 suspended in the air. In one exemplary embodiment, the coil 160 has a larger diameter than the ring magnet 150. According to various embodiments, the coil 160 may be positioned or oriented on the diaphragm in a coaxial manner with respect to the first annular disk surface 122, the second annular disk surface 126, and the permanent ring magnet 150. Accordingly, the coil axis of the coil 160 may coincide with the common axis 129. According to various embodiments, the coil 160 may be suspended relative to the permanent ring magnet 150 by the diaphragm 110 in a manner that is capable of acting with the permanent ring magnet 150 when current is passed through the coil 160. Accordingly, the coil 160 may be suspended by the diaphragm 110 in an overhung manner within the magnetic field of the permanent ring magnet 150 such that the permanent ring magnet 150 may have a magnetic influence on the coil 160. Thus, when the coil 160 is energized by passing a current through the coil 160, the magnetic field generated by the coil 160 may interact with the magnetic field of the permanent ring magnet 150. According to various embodiments, the interaction between the magnetic fields may exert a force on the diaphragm 110 to move the diaphragm 110. According to various embodiments, rapid changes in the direction and magnitude of the current through the coil 160 may cause the diaphragm 110 to vibrate. Thus, the coil 160 may act in conjunction with the permanent ring magnet 150 to vibrate the diaphragm 110 when current is passed through the coil 160.

Fig. 2A shows a cross-sectional view of a headphone driver 200 according to various embodiments. Fig. 2B shows an exploded view of the headphone driver 200 of fig. 2A, in accordance with various embodiments. The headphone driver 200 of fig. 2A and 2B includes all of the features of the headphone driver 100 of fig. 1A-1C, according to various embodiments. Accordingly, all of the features, changes, modifications and variations applicable to the headphone driver 100 of fig. 1A to 1C are also applicable to the headphone driver 200 of fig. 2A and 2B. For example, similar to the headphone driver 100 of fig. 1A-1C, the headphone driver 200 can include a circular base structure 220 having a first annular disc surface 222, a second annular disc surface 226, a first set of through-holes 232, a second set of through-holes 236, and a central through-cavity 230. Similar to the headphone driver 100 of fig. 1A-1C, the headphone driver 200 can include a permanent ring magnet 250, a diaphragm 210, and a coil 260. According to various embodiments, the headphone driver 200 of fig. 2A and 2B may differ from the headphone driver 100 of fig. 1A-1C in that the headphone driver 200 of fig. 2A and 2B may further include the following additional features and/or limitations.

According to various embodiments, the circular base structure 220 of the headphone driver 200 may further comprise a circular inner wall 240. Accordingly, the circular inner wall 240 of the circular base structure 220 may be a single wall structure forming a closed circle. Thus, the circular inner wall 240 may be a hollow cylindrical wall structure. According to various embodiments, the circular inner wall 240 of the circular base structure 220 may extend upright in the axial direction 229a from the inner circumference 225 of the second annular disk surface 226 towards the first annular disk surface 222. Accordingly, the circular inner wall 240 of the circular base structure 220 may extend perpendicularly from the second annular disc surface 226 along the common axis 229 in a direction from the second annular disc surface 226 toward the first annular disc surface 222. According to various embodiments, the circular inner wall 240 of the circular base structure 220 may enclose or surround or encircle or define the central through-going cavity 230 of the circular base structure 220.

According to various embodiments, a circumferential groove 242 may be provided or formed between the circular inner wall 240 of the circular base structure 220 and the inner circumference 221 of the first annular disc surface 222, wherein the bottom of the circumferential groove 242 is formed by the second annular disc surface 226. Accordingly, since the second annular disk surface 226 is recessed from the first annular disk surface 222, the recessed second annular disk surface 226 may form a bottom of a channel that serves as a circumferential groove 242 between the circular inner wall 240 of the circular base structure 220 and the inner circumference 221 of the first annular disk surface 222. According to various embodiments, the second set of through-holes 236 may act as tuning tubes or holes for mid-frequency sound. Forming slots 242 at the top of the second set of through holes 236 increases the speaker cavity volume, which improves mid-frequency sensitivity.

According to various embodiments, the circular base structure 220 of the headphone driver 200 may further comprise an internal chamfer between the transition portion 246 from the second annular disc surface 226 of the circular base structure 220 to the circular inner wall 240 of the circular base structure 220 (or at the root of the circular inner wall 240 of the circular base structure 220). Accordingly, the internal chamfer may provide a beveled surface within the circumferential groove 242 along the transition 246 from the second annular disc surface 226 to the circular inner wall 240.

According to various embodiments, the headphone driver 200 may further include a circular base tray 270. According to various embodiments, the circular base tray 270 may fit in the central through cavity 230 of the circular base structure 220 of the headphone driver 200. Accordingly, a circular base tray 270 may be inserted into the central through-cavity 230 for attachment to the circular base structure 220. According to various embodiments, the circular base tray 270 may include a circular base surface 272 and a circular outer wall 274 extending upright from a circumference 273 of the circular base surface 272. Accordingly, the circular outer wall 274 of the circular base tray 270 may be a single wall structure forming a closed circle. Thus, the circular outer wall 274 may be a hollow cylindrical wall structure. Further, the circular outer wall 274 of the circular base tray 270 may extend perpendicularly from the circular base surface 272 of the circular base tray 270.

According to various embodiments, the circular base tray 270 may be fitted in the central through cavity 230 of the circular base structure 220 in such a way that the circular outer wall 274 of the circular base tray 270 may extend upright in the axial direction 229a from the circumference 273 of the circular base surface 272 of the circular base tray 270 towards the first annular disc surface 222. Accordingly, the circular base tray 270 may be fitted to the central through cavity 230 of the circular base structure 220 such that the circular base tray 270 is oriented with the circular outer wall 274 of the circular base tray 270 extending from the circular base surface 272 in a direction parallel to the axial direction 229a, which axial direction 229a is a direction along the common axis 229 from the second annular disc surface 226 towards the first annular disc surface 222.

According to various embodiments, the circular base tray 270 may include a through-hole 276 in the center of the circular base surface 272. According to various embodiments, the through-holes 276 of the circular base tray may extend perpendicularly from the circular base surface 272 and through the base portion of the circular base tray 270. Accordingly, throughbore 276 may have a bore axis perpendicular to circular base surface 272. According to various embodiments, when the circular base tray 270 is fitted in the central through cavity 230 of the circular base structure 220, the hole axis of the through hole 276 of the circular base tray 270 may be parallel to the axial direction 229 a. According to various embodiments, the hole axes of the through-holes 276 of the circular base tray 270 may coincide with the common axis 229 such that the through-holes 276 may be coaxial with the first and second annular disk surfaces 222, 226 of the circular base structure 220.

According to various embodiments, the circular base tray 270 may be fitted in the central through-going cavity 230 of the circular base structure 220 in a manner such that the circular base surface 272 may be offset from the second annular disk surface 226 of the circular base structure 220 along the common axis 229. Accordingly, the circular base tray 270 may be configured such that when assembled to the center through cavity 230 of the circular base structure 220, the circular base surface 272 of the circular base tray 270 may be at a different level or in a different plane relative to the second annular disk surface 226 of the circular base structure 220. For example, the circular base surface 272 may be offset from the second annular disk surface 226 of the circular base structure 220 in the axial direction 229 a.

According to various other embodiments, the circular base tray 270 may be fitted in the central through-going cavity 230 of the circular base structure 220 in such a way that the circular base surface 272 may lie in the same plane as the second annular disk surface 226 of the circular base structure 220. Accordingly, the circular base tray 270 may be configured such that when fitted to the center through cavity 230 of the circular base structure 220, the circular base surface 272 of the circular base tray 270 may be aligned in a level or in a plane with the second annular disk surface 226 of the circular base structure 220.

According to various embodiments, when the circular base tray 270 is fitted in the central through-going cavity 230 of the circular base structure 220, the circular outer wall 274 of the circular base tray 270 may extend alongside the circular inner wall 240 of the circular base structure 220 to thereby be closely surrounded by the circular inner wall 240 of the circular base structure 220. Accordingly, the outer cylindrical surface 275 of the circular outer wall 274 of the circular base tray 270 may all contact and abut the inner cylindrical surface 241 of the circular inner wall 240 of the circular base structure 220 such that the assembled circular base tray 270 and circular base structure 220 does not have any gap between the circular outer wall 274 of the circular base tray 270 and the circular inner wall 240 of the circular base structure 220.

According to various embodiments, the circular inner wall 240 of the circular base structure 220 may include an inwardly projecting rim 248. Accordingly, an inwardly projecting rim 248 may project perpendicularly from the end of the circular inner wall 240 and radially inwardly toward the common axis 229. According to various embodiments, the inwardly projecting rim 248 of the circular inner wall 240 may act as a mechanical stop for limiting the amount of insertion when inserting the circular base tray 270 into the central through-cavity 230 of the circular base structure 220. In addition, the inwardly projecting rim 248 may also serve to define a predetermined relative position at which the circular base tray 270 will be assembled relative to the circular base structure 220.

According to various embodiments, the permanent ring magnet 250 may be placed on the circular base surface 272 of the circular base tray 270 with the central aperture 252 of the permanent ring magnet 250 aligned with the through-hole 276 in the center of the circular base surface 272. According to various embodiments, the permanent ring magnet 250 may be within or inside the inner circumference 225 of the second annular disc surface 226 when the permanent ring magnet 150 is placed on the circular base surface 272 of the circular base tray 270. According to various embodiments, with the central aperture 252 of the permanent ring magnet 250 aligned with the through-hole 276 of the circular base surface 272, the permanent ring magnet 250 may be coaxial with the second annular disk surface 226 such that the geometric axis of the permanent ring magnet 250 may coincide with the common axis 229. According to various embodiments, the central bore 252 of the aligned permanent ring magnet 250 and the through-holes 276 of the circular base surface 272 may act as tuning bores or tubes for high frequency sound.

According to various embodiments, the circular base tray 270 may be made of metal or a magnetizable material (such as steel). According to various embodiments, when the permanent ring magnet 250 touches or contacts the circular base tray 270, magnetism may be induced in the circular base tray 270, making the circular base tray 270 a magnet. According to various embodiments, the diameter of the permanent ring magnet 250 may be less than the diameter of the circular base surface 272 of the circular base tray 270. According to various embodiments, when the permanent ring magnet 250 is placed on the circular base surface 272, a circumferential gap 254 may be formed between the permanent ring magnet 250 and the circular outer wall 274 of the circular base tray 270. Accordingly, the seating surface 256 of the permanent ring magnet 250 may be in contact with the circular seating surface 272. However, the outer cylindrical surface 258 of the permanent ring magnet 250 may not have any contact with the circular outer wall 274 of the circular base tray 270. According to various embodiments, the coil 260 on the diaphragm 210 may be configured and shaped so as to be suspended within the circumferential gap 254 between the permanent ring magnet 250 and the circular outer wall 274 of the circular base tray 270.

Fig. 3A shows a bottom perspective view of an assembled circular base structure 220 and circular base tray 270, in accordance with various embodiments. Fig. 3B shows a top perspective view of an assembled circular base structure 220 and circular base tray 270, in accordance with various embodiments.

As shown, according to various embodiments, each through-hole 232 of the first set of through-holes 232 and each through-hole 236 of the second set of through-holes 236 may have a circular cross-section. According to various embodiments, each through-hole 232 of the first set of through-holes 232 and each through-hole 236 of the second set of through-holes 236 may have an oval cross-section, an elongated or rectangular cross-section, a curved cross-section, or any other suitable cross-sectional shape.

According to various embodiments, the cross-sectional area of each through-hole 232 of the first set of through-holes 232 may be less than the cross-sectional area of each through-hole 236 of the second set of through-holes. Accordingly, the size or dimension of each through-hole 232 of the first set of through-holes 232 may be smaller than the size or dimension of each through-hole 236 of the second set of through-holes 236.

According to various embodiments, the circular base structure 220 may be configured to include a thicker structural portion 239 at each through-hole 232 of the first set of through-holes 232 relative to the structural portion at each through-hole 236 of the second set of through-holes 236. According to various embodiments, the bottom surface 237 (or lower or underlying surface) of the thicker structural portion 239 may be at a level between the first and second annular disk surfaces 222, 226 along the axial direction 229a (or common axis 229). Accordingly, the depth of each through-hole 232 of the first set of through-holes 232 may be greater than the depth of each through-hole 236 of the second set of through-holes 236.

According to various embodiments, the number of through-holes 232 in the first set of through-holes 232 may be less than the number of through-holes 236 in the second set of through-holes 236. For example, as shown in fig. 3A and 3B, the first set of through-holes 232 may include six through-holes 232 and the second set of through-holes 236 may include ten through-holes 236.

Fig. 4 shows a cross-section of a headset 401 having the headset driver 200 of fig. 2A and 2B, in accordance with various embodiments. According to various embodiments, the headset 401 may include a headset housing 402. According to various embodiments, the headset 401 may further include a headset driver support frame 404 suspended across the opening of the headset housing 402 to define a cavity 406 enclosed therein. According to various embodiments, the headset 401 may further include a headset driver 200 attached to the headset driver support frame 404 in a manner disposed inside the cavity 406. According to various embodiments, the headset 401 may further include an ear pad 408 attached to the headset housing 402. Accordingly, the headphone 401 having the headphone driver 200 of various embodiments can generate sound with better sound quality.

The following examples relate to various embodiments.

Example 1 is a headphone driver, comprising:

a circular base structure having:

a first annular disk surface and a second annular disk surface arranged in a coaxial manner and oriented in the same axial direction, the first annular disk surface having an inner radius equal to or greater than an outer radius of the second annular disk surface, the first annular disk surface being offset in the axial direction from the second annular disk surface in such a way that a radially inward stepped profile is formed from the first annular disk surface to the second annular disk surface,

a first set of through-holes distributed along the first annular disc surface, each through-hole of the first set of through-holes having a hole axis parallel to the axial direction,

a second set of through-holes distributed along the second annular disc surface, each through-hole of the second set of through-holes having a hole axis parallel to the axial direction, and

a central through cavity within the inner circumference of the second annular disc surface;

a permanent ring magnet disposed within the inner circumference of the second annular disk surface;

a diaphragm disposed above the circular base structure so as to cover the first annular disk surface, the second annular disk surface, and the permanent ring magnet; and

a coil attached to a central region of the diaphragm and suspended relative to the permanent ring magnet in a manner that is actuatable with the permanent ring magnet to vibrate the diaphragm when a current is passed through the coil.

In example 2, the subject matter of example 1 can optionally include: the circular base structure may further comprise a circular inner wall extending upright in the axial direction from the inner circumference of the second annular disc surface towards the first annular disc surface, thereby providing a circumferential groove between the circular inner wall and the inner circumference of the first annular disc surface, the bottom of the circumferential groove being formed by the second annular disc surface.

In example 3, the subject matter of example 1 or 2 can optionally include: a circular base tray may fit within the central through-cavity,

wherein the circular base tray has a circular outer wall extending upright in the axial direction from a circumference of a circular base surface of the circular base tray toward the first annular disk surface, and

wherein the circular base tray comprises a through-hole in the center of the circular base surface, the through-hole having a hole axis parallel to the axial direction.

In example 4, the subject matter of example 3 in combination with example 2 may optionally include: the circular outer wall of the circular base tray may extend alongside the circular inner wall of the circular base structure so as to be closely surrounded by the circular inner wall of the circular base structure.

In example 5, the subject matter of example 3 or example 4 may optionally include: the permanent ring magnet may be placed on the circular base surface of the circular base tray with a center hole of the permanent ring magnet aligned with the through hole in the center of the circular base surface.

In example 6, the subject matter of any of examples 3 to 5 may optionally include: the circular base tray may be made of magnetizable material.

In example 7, the subject matter of any of examples 1 to 6 can optionally include: each through-hole of the first set of through-holes may have a cross-sectional area that is smaller than a cross-sectional area of each through-hole of the second set of through-holes.

In example 8, the subject matter of any of examples 1 to 7 can optionally include: the number of through-holes in the first set of through-holes is less than the number of through-holes in the second set of through-holes.

In example 9, the subject matter of any of examples 1 to 8 may optionally include: each of the first and second sets of through-holes may have a circular cross-section.

In example 10, the subject matter of any of examples 1 to 9 may optionally include: the circular base structure may be configured to include a thicker structural portion at each of the first set of through-going holes relative to the structural portion at each of the second set of through-going holes.

In example 11, the subject matter of example 10 can optionally include: a lower surface of the thicker structural portion is at a level between the first and second annular disk surfaces along the axial direction.

Various embodiments have provided a headphone driver for headphones, which can generate sound with better sound quality. Various embodiments have provided a headphone driver that can improve the quality of mid-range (or mid-range) and/or low-mid-range (or low-mid-range) sound. Various embodiments have provided an earphone driver that can improve sensitivity of mid-frequency and/or mid-low frequency sounds. Various embodiments have provided a driver that can produce louder and more clear sound in low, mid, and high frequencies. Various embodiments have also provided a headset including a headset driver according to various embodiments.

While the invention has been particularly shown and described with reference to specific embodiments, it will be understood by those skilled in the art that various changes, modifications and variations in form and detail may be made without departing from the scope of the invention as defined by the appended claims. The scope of the invention is thus indicated by the appended claims, and all changes that come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Claims

1. A headphone driver, characterized in that the headphone driver comprises:

a circular base structure having:

a first annular disk surface and a second annular disk surface arranged in a coaxial manner and oriented in the same axial direction, the first annular disk surface having an inner radius equal to or greater than an outer radius of the second annular disk surface, the first annular disk surface being offset in the axial direction from the second annular disk surface in such a way that a radially inward stepped profile is formed from the first annular disk surface to the second annular disk surface;

a first set of through-holes distributed along the first annular disk surface, each through-hole of the first set of through-holes having a hole axis parallel to the axial direction;

a second set of through-holes distributed along the second annular disc surface, each through-hole of the second set of through-holes having a hole axis parallel to the axial direction; and

2. The headphone driver as in claim 1, wherein the circular base structure further comprises a circular inner wall extending upright in the axial direction from the inner circumference of the second annular disk surface toward the first annular disk surface, thereby providing a circumferential groove between the circular inner wall and the inner circumference of the first annular disk surface, a bottom of the circumferential groove being formed by the second annular disk surface.

3. The headphone driver of claim 2 further comprising a circular base tray that fits in the central through-cavity,

4. The headphone driver of claim 3 wherein the circular outer wall of the circular base tray extends alongside the circular inner wall of the circular base structure so as to be closely surrounded by the circular inner wall of the circular base structure.

5. The headphone driver of claim 3 or 4 wherein the permanent ring magnet is placed on the circular base surface of the circular base tray with a center hole of the permanent ring magnet aligned with the through hole at the center of the circular base surface.

6. A headphone driver as claimed in claim 3 or 4, wherein the circular base tray is made of magnetisable material.

7. The headphone driver of any of claims 1 to 4 wherein a cross-sectional area of each through-hole of the first set of through-holes is smaller than a cross-sectional area of each through-hole of the second set of through-holes.

8. The headphone driver of any of claims 1 to 4, wherein a number of through-holes in the first set of through-holes is less than a number of through-holes in the second set of through-holes.

9. The headphone driver of any of claims 1-4 wherein the circular base structure is configured to include a thicker structural portion at each through-going hole of the first set of through-going holes relative to a structural portion at each through-going hole of the second set of through-going holes.

10. The headphone driver of claim 9 wherein a lower surface of the thicker structural portion is at a level along the axial direction between the first annular disk surface and the second annular disk surface.