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KR-20260062713-A - Slim tweeter speaker for generating high frequency band

KR20260062713AKR 20260062713 AKR20260062713 AKR 20260062713AKR-20260062713-A

Abstract

The present invention provides a slim speaker having an FPCB inserted into the interior of the speaker, wherein the FPCB is mounted inside the space of the speaker at a position that does not increase the height or width of the speaker.

Inventors

  • 박민구
  • 천승우
  • 조동현
  • 이강산

Assignees

  • 부전전자 주식회사

Dates

Publication Date
20260507
Application Date
20241029

Claims (11)

  1. A slim speaker having an FPCB inserted into the interior of the speaker, wherein the FPCB is mounted inside the speaker's space at a position that does not increase the height or width of the speaker.
  2. In Article 1, The above FPCB branches off from the body of the substrate and is mounted in the space between a support member located below the diaphragm of the speaker and a cover member surrounding the bottom surface of the speaker.
  3. In Paragraph 2, The above FPCB is supported on one surface of a support member, and the space in which the support member contacts and supports the FPCB is a spaced-apart space between the surrounding magnets of the speaker.
  4. In Paragraph 3, The above support member is a speaker, which is a ring plate or an upper magnetic chain.
  5. In Paragraph 3, The above cover member is a speaker, which is a magnetic material or a yoke.
  6. In Article 1, The diaphragm of the speaker has a convex receiving portion formed at the bonding portion with the coil, and the center portion inside the receiving portion and the edge portion outside the receiving portion are formed as flat surfaces.
  7. In Paragraph 3, A speaker whose magnet is of the 3-magnet or 5-magnet type, and whose FPCB is mounted at the corner of a support member.
  8. In Paragraph 3, The speaker's magnet is a three-magnet type with the short-term magnet removed, and the FPCB is installed across part or all of the installation location of the short-term magnet, which is removed from the support member.
  9. A substrate applied to a slim speaker, wherein the substrate comprises a body exposed to the outside and FPCBs branching from both sides of the body and mounted inside the speaker, wherein the FPCBs are mounted at the corners of a ring plate that supports a diaphragm from below, and the maximum height of the FPCBs is smaller than the yoke that closes the bottom surface of the speaker, so that the FPCBs are accommodated in the space inside the speaker, thereby not increasing the overall height of the speaker and not requiring additional side space for mounting the FPCBs.
  10. A substrate applied to a slim speaker, wherein the substrate comprises a body exposed to the outside and an FPCB branched from each side of the body and mounted inside the speaker, wherein the FPCB is mounted across part or all of the space where a single magnet is located on a ring plate that supports a diaphragm from the bottom, and the maximum height of the FPCB is smaller than the yoke that closes the bottom surface of the speaker, so that the FPCB is accommodated in the space inside the speaker and does not require additional side space for mounting the FPCB without increasing the overall height of the speaker.
  11. A slim speaker having a substrate of claim 9 or 10, wherein the speaker: A speaker in which a grille, a diaphragm, a ring plate, a magnet, and a yoke are arranged sequentially from the top of the speaker, and these components are mounted inside a housing that is open at the top and bottom.

Description

Slim tweeter speaker for generating high frequency band and its FPCB mounting structure The present invention relates to a slim tweeter speaker for high-frequency reproduction. Recently, tweeter speakers capable of reproducing mid-range and high-range frequencies are being developed. Tweeter speakers must satisfy the requirements of being ultra-compact and portable while maintaining excellent volume and quality. In Patent No. 10-2672255, the applicant disclosed a tweeter speaker (1') for ultra-high frequency reproduction, comprising a planar vibrator for ultra-high frequency reproduction as illustrated in FIG. 11, a casing (2') made of a non-magnetic material, a diaphragm (8') mounted sequentially from top to bottom inside the casing, a magnet (6'), and a magnetic body (4'), and a structure in which a circuit is formed in the diaphragm itself. A ventilation hole is formed in the diaphragm to allow air communication sealed between its rear and the upper surface of the casing. The vibration sound is emitted downward as indicated by the arrow and joins with a woofer vibration sound not illustrated. However, the above patent relates to a planar diaphragm with a circuit implementation different from a conventional diaphragm that emits sound upward, and it is not a structure that can be applied universally to tweeter speakers independently. In addition, there are limitations to its application to hybrid speakers combined with woofers. Many structures are being proposed to achieve ultra-slimness and miniaturization of speakers, and in this process, attention must also be paid to the structure and shape of the FPCB inserted into the speaker. The total height of the speaker can vary significantly depending on the mounting position of the FPCB. Regarding FPCB structures, for example, Patent Publication No. 10-2022-01519335 discloses a structure in which an FPCB (flexible circuit board; 170') is located at the top or bottom of the housing as shown in FIG. 9. However, this structure requires a separate space in the z-axis direction for mounting the FPCB, so it does not contribute to the slimming of the tweeter speaker. Patent Publication No. 10-2024-0112160 discloses a structure in which the FPCB is integrally formed with the diaphragm; while this is advantageous for miniaturization, it cannot be applied when the FPCB must be manufactured as a separate component. Therefore, from the perspective of the FPCB, improvements are required to realize an ultra-small tweeter speaker while ensuring the quality of the ultra-high frequency range. The present invention has been devised to further improve upon the above prior art and prior patents. FIG. 1a is a top view of a tweeter speaker of the present invention, and FIG. 1b is a bottom view thereof; FIG. 2 is a cross-sectional view of the speaker of FIG. 1 taken by cutting it in the aa'direction; FIG. 3 is a drawing for explaining the structural features of the substrate of the present invention; FIG. 4 is a drawing illustrating the structure of a part identical to FIG. 3, of a miniature tweeter speaker equipped with a ring plate and a yoke; FIG. 5 is a drawing illustrating the structure of the substrate and the location where the FPCB is mounted in the speaker of the structure of FIG. 4; FIG. 6 is a drawing illustrating a comparative example of FIG. 5; FIG. 7 is a drawing illustrating the diaphragm structure of the present invention; FIG. 8 is a drawing illustrating a diaphragm structure according to another embodiment of the present invention; FIG. 9 is a drawing illustrating the structure of a tweeter speaker according to another embodiment of the present invention; FIG. 10 is a drawing showing another example of FPCB mounting in the case of a 3-magnet type; FIG. 11 is a drawing illustrating a flat diaphragm of the applicant's prior patent. The present invention is capable of various modifications and may have various embodiments. Specific embodiments are illustrated in the drawings and described in detail in the specific details for carrying out the invention. However, this is not intended to limit the invention to specific embodiments, and it should be understood that the invention includes all modifications, equivalents, and substitutions that fall within the spirit and scope of the invention. Preferred embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1a is a top view of the tweeter speaker (1) of the present invention, and FIG. 1b is a bottom view thereof. The overall exterior of the speaker (1) is a square shape with a particularly small height, and is manufactured as a miniature size with a width and height of 10 mm or less each and a height of 1.5 mm or less. The entire outer surface of the speaker (1) is defined by the housing (5). A flat grille (2) is placed on the upper surface of the speaker (1) to cover the upper space of the housing (5). Symmetrical grille holes (20) are formed on the left and right si