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DE-202021004610-U1 - ACOUSTIC DEVICE AND ITS MAGNETIC CIRCLE ARRANGEMENT

DE202021004610U1DE 202021004610 U1DE202021004610 U1DE 202021004610U1DE-202021004610-U1

Abstract

An acoustic device characterized in that it comprises: a housing having a first receiving chamber, a loudspeaker, the loudspeaker being arranged in the first receiving chamber, and comprising: a magnetic circuit arrangement, a voice coil, a vibration arrangement, and a vibration transmission plate, the magnetic circuit arrangement forming a magnetic gap; one end of the voice coil being arranged in the magnetic gap and the other end of the voice coil being connected to the vibration arrangement, and the vibration arrangement being connected to the vibration transmission plate and the vibration transmission plate being connected to the housing; the vibration arrangement comprising an inner support, an outer support, and a vibration plate; the other end of the voice coil being connected to the inner support; one end of the outer support being physically connected to two sides of the magnetic circuit arrangement; the vibration plate being physically connecting the inner support and the outer support to each other in order to limit the relative movement between the inner support and the outer support in a first direction; the first direction being a radial direction of the receiving chamber; wherein at least one of the inner support, the outer support, and the vibration plate is connected to the vibration transmission plate to transmit the vibration to the vibration transmission plate; wherein the outer support and the inner support are movably connected to the vibration plate to limit the relative movement between the outer support and the inner support in the first direction and to allow movement of the inner support and the vibration plate relative to the outer support in a second direction; wherein the second direction is an extension direction of the inner support and the outer support; wherein a first projection is provided at the other end of the outer support, wherein the vibration plate is provided with a first through-hole, and wherein the first projection is movably connected to the vibration plate through the first through-hole.

Assignees

  • SHENZHEN SHOKZ CO LTD

Dates

Publication Date
20260513
Application Date
20210420
Priority Date
20200429

Claims (10)

  1. An acoustic device characterized in that it comprises: a housing having a first receiving chamber, a loudspeaker, the loudspeaker being arranged in the first receiving chamber, and comprising: a magnetic circuit arrangement, a voice coil, a vibration arrangement, and a vibration transmission plate, the magnetic circuit arrangement forming a magnetic gap; one end of the voice coil being arranged in the magnetic gap and the other end of the voice coil being connected to the vibration arrangement, and the vibration arrangement being connected to the vibration transmission plate and the vibration transmission plate being connected to the housing; the vibration arrangement comprising an inner support, an outer support, and a vibration plate; the other end of the voice coil being connected to the inner support; one end of the outer support being physically connected to two sides of the magnetic circuit arrangement; the vibration plate physically connecting the inner support and the outer support to each other in order to limit the relative movement between the inner support and the outer support in a first direction; the first direction being a radial direction of the receiving chamber; wherein at least one of the inner support, the outer support, and the vibration plate is connected to the vibration transmission plate to transmit the vibration to the vibration transmission plate; wherein the outer support and the inner support are movably connected to the vibration plate to limit the relative movement between the outer support and the inner support in the first direction and to allow movement of the inner support and the vibration plate relative to the outer support in a second direction; wherein the second direction is an extension direction of the inner support and the outer support; wherein a first projection is provided at the other end of the outer support, wherein the vibration plate is provided with a first through-hole, and wherein the first projection is movably connected to the vibration plate through the first through-hole.
  2. Acoustic device according to Claim 1 , characterized in that a second projection is provided at one end of the inner support, wherein the vibration plate is provided with a second through-hole, and wherein the second projection is movably connected to the vibration plate through the second through-hole.
  3. Acoustic device according to Claim 2 , characterized in that the loudspeaker further comprises an elastic damping plate, wherein the elastic damping plate is arranged between the vibration transmission plate and an end of the inner support to dampen the vibration of the inner support in the second direction.
  4. Acoustic device according to Claim 3 , characterized in that the second attachment comprises a first attachment section and a second attachment section which are physically connected to each other, wherein the second attachment section is arranged above the first attachment section, wherein the first attachment section is passed through the second through-hole and the second attachment section is inserted in the vibration transmission plate, wherein the elastic damping plate is provided with a third through-hole, and wherein the elastic damping plate is placed on the second attachment section via the third through-hole and supported on the first attachment section.
  5. Acoustic device according to the Claims 2 until 4 , characterized in that it further comprises a protective element, wherein the protective element comprises a mounting part, a receiving part and a support part, wherein the mounting part and the receiving part form a second receiving chamber, and wherein the vibration transmission plate is arranged in the second receiving chamber, the mounting part rests against an outer end face of the vibration transmission plate, and the support part is connected to the second receiving chamber and is arranged above the housing.
  6. Acoustic device according to the Claims 2 until 5 , characterized in that an inner wall of the housing is provided with an annular support projection configured to support the annular support part and the elastic damping plate.
  7. Acoustic device according to Claim 1 , characterized in that the magnetic circuit arrangement comprises a group of magnetic elements and a magnetically conductive cover, wherein the magnetically conductive cover comprises a bottom of the cover, a side of the cover and a cylindrical recess, wherein the bottom of the cover and the side of the cover form the cylindrical recess, wherein the group of magnetic elements is arranged in the cylindrical recess and the magnetic gap is formed between it and the magnetically conductive cover.
  8. Acoustic device according to the Claims 2 until 7 , characterized in that it further comprises a fastening part configured to fasten the magnetic element group to the underside of the cover, the fastening part comprising a bolt and a nut, the bolt being successively passed through the magnetic element group and then out of the underside of the cover to firmly connect the magnetic element group to the underside of the cover by means of a threaded connection.
  9. Speaker arrangement according to Claim 1 , characterized in that the vibration plate comprises an annular rim part and one or more ribs connected to an inner side of the annular rim part, wherein the annular rim part is provided with a first through-bore; wherein through-grooves corresponding to the ribs may be provided on a side of the inner support facing the vibration transmission plate, and wherein the ribs may each be received in the through-grooves.
  10. Speaker arrangement according to one of the Claims 2 until 9 , characterized in that the annular central part is provided with a second through-hole, wherein the position of the second projection corresponds to the position of the second through-hole, and that the annular outer part is provided with a first through-hole, wherein the position of the first projection corresponds to the position of the first through-hole.

Description

Cross-reference The present application claims priority over the Chinese application filed on April 29, 2020. 202010358223.0 and the Chinese application submitted on August 12, 2020 202021689802.5 , the entire content of which is incorporated into this application by reference. Technical field The present application relates to the field of acoustic technologies, in particular to a bone-conducting acoustic device. State of the art Bone conduction is a method of sound transmission in which sound is converted into mechanical vibrations of various frequencies. The sound is transmitted through the human bones and tissues (such as the skull, the bony labyrinth, the inner ear fluid, the organ of Corti, the auditory nerve, and the auditory cortex). A bone-conducting acoustic device (such as bone conduction earphones) is placed close to the bones and serves to receive sound through bone conduction technology. The sound waves can be transmitted directly to the auditory nerve via the bones, allowing both ears to remain open and preventing damage to the eardrums. Bone-conducting acoustic devices have a wide range of applications in various applications, such as hearing aids. Since the sound generation quality of the bone-conducting acoustic device directly affects the user's listening experience, improving this quality is of paramount importance. Disclosure of the invention The present application relates to an acoustic device. The acoustic device comprises: a housing having a receiving chamber; and a loudspeaker arranged in the receiving chamber, comprising: a magnetic circuit arrangement, a voice coil, a vibration arrangement and a vibration transmission plate, wherein the magnetic circuit arrangement forms a magnetic gap, wherein one end of the voice coil is arranged in the magnetic gap and the other end of the voice coil is connected to the vibration arrangement, and wherein the vibration arrangement is connected to the vibration transmission plate and the vibration transmission plate is connected to the housing. In some embodiments, the vibration arrangement comprises an inner support, an outer support, and a vibration plate, wherein the other end of the voice coil is connected to the inner support; wherein one end of the outer support is physically connected to two sides of the magnetic circuit arrangement; wherein the vibration plate physically connects the inner support and the outer support to each other in order to limit the relative movement between the inner support and the outer support in a first direction; wherein the first direction is a radial direction of the receiving chamber; and wherein at least one of the inner support, the outer support, and the vibration plate is connected to the vibration transmission plate in order to transmit the vibration to the vibration transmission plate. In some embodiments, the outer support and the inner support are movably connected to the vibration plate in order to limit the relative movement between the outer support and the inner support in the first direction and to allow the movement of the inner support and the vibration plate relative to the outer support in a second direction, wherein the second direction is an extension direction of the inner support and the outer support. In some embodiments, a first projection is provided at the other end of the outer support, wherein the vibration plate is provided with a first through-hole, and wherein the first projection is movably connected to the vibration plate through the first through-hole. In some embodiments, a second projection is provided at one end of the inner support, wherein the vibration plate is provided with a second through-hole, and wherein the second projection is movably connected to the vibration plate through the second through-hole. In some embodiments, the loudspeaker further comprises an elastic damping plate, wherein the elastic damping plate is arranged between the vibration plate and one end of the inner support to dampen the vibration of the inner support in the second direction. In some embodiments, the second attachment comprises a first attachment section and a second attachment section that are physically connected to each other, wherein the second attachment section is arranged above the first attachment section, wherein the first attachment section is passed through the second through-hole and the second attachment section is inserted in the vibration transmission plate, wherein the elastic damping plate is provided with a third through-hole, and wherein the elastic damping plate is placed on the second attachment section via the third through-hole and supported on the first attachment section. In some embodiments, it is further provided that a protective element is included, wherein the protective element comprises a contact part, a receiving part and a support part, wherein the contact part and the receiving part form a second receiving chamber, and wherein the vibration transmissi