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EP-3972285-B1 - LOUDSPEAKER AND TERMINAL DEVICE

EP3972285B1EP 3972285 B1EP3972285 B1EP 3972285B1EP-3972285-B1

Inventors

  • JIANG, Guozhu
  • LONG, Lifeng

Dates

Publication Date
20260513
Application Date
20200420

Claims (6)

  1. A speaker, comprising a speaker housing (100) and a speaker body (200), wherein the speaker body (200) is connected to the speaker housing (100), the speaker body (200) and the speaker housing (100) form a cavity, the cavity comprises a first inner cavity and a second inner cavity (B), and the first inner cavity and the second inner cavity (B) are connected through a connecting hole; wherein the first inner cavity is located between the speaker body (200) and the speaker housing (100), and the second inner cavity (B) is located within the speaker housing (100); wherein the first inner cavity comprises a first sub-cavity (A) and a sound output channel (121), the sound output channel (121) is connected to the first sub-cavity (A), and the first sub-cavity (A) is connected to the second inner cavity (B) through the connecting hole; characterized in that the speaker housing (100) comprises a first housing (110) and a second housing (120) that is detachably connected to the first housing (110), the speaker body (200) is disposed between the first housing (110) and the second housing (120), the first sub-cavity (A) is formed between the speaker body (200) and the second housing (120), and the second housing (120) is provided with the sound output channel (121); wherein the second housing (120) comprises a housing body (122), a support sheet (123), and a sealing sheet (124), the support sheet (123) is disposed on the housing body (122), the support sheet (123) is provided with a first groove (1231) recessed toward the speaker body (200), the sealing sheet (124) covers an opening of the first groove (1231) such that the second inner cavity (B) is formed between the first groove (1231) and the sealing sheet (124), a second mounting hole is arranged in a center of a bottom wall, facing the opening, of the first groove (1231) of the support sheet (123), the second mounting hole is equipped with a tube member (130), and the tube member (130) connects the first sub-cavity (A) and the second inner cavity (B), and a central hole of the tube member (130) is the connecting hole; wherein the speaker body (200) comprises a diaphragm (210) and a dome (220), the dome (220) is provided with a second groove (221) that matches a shape of the first groove (1231), and the dome (220) fits the diaphragm (210); the speaker body (200) comprises an inner magnet (230) and a magnetic conductive sheet (240) arranged on the inner magnet (230), the magnetic conductive sheet (240) is arranged on one side, facing the diaphragm (210), of the inner magnet (230), and a third groove (241) is arranged in an area through which the magnetic conductive sheet (240) is opposite to the second groove (221).
  2. The speaker according to claim 1, wherein the housing body (122) is provided with a first mounting hole (1221), the support sheet (123) is arranged in the first mounting hole (1221), and a surface of the support sheet (123) at a side away from the first housing (110) is coplanar with an outer surface of the housing body (122); the surface on which the opening of the first groove (1231) on the support sheet (123) is located is coplanar with an outer surface of the sealing sheet (124).
  3. The speaker according to claim 1, wherein a support platform (1232) surrounds the first groove (1231), and the sealing sheet (124) is pasted on the support platform (1232).
  4. The speaker according to claim 1, wherein the support sheet (123) is a steel sheet for support.
  5. The speaker according to claim 1, wherein a fastening member (140) is fastened on the support sheet (123), the fastening member (140) has a threaded hole corresponding to the second mounting hole, an outer wall of the tube member (130) has threads, and the tube member (130) penetrates through the support sheet (123) by using the second mounting hole and is screwed into the threaded hole.
  6. A terminal device, comprising the speaker according to any one of claims 1 to 5.

Description

TECHNICAL FIELD The present disclosure relates to the field of communications device technologies, and in particular, to a speaker and a terminal device. BACKGROUND As users' needs increase, performance of terminal devices is continuously being optimized. Current terminal devices have growing requirements for appearance design. An increasing number of speakers have sound output holes arranged on side faces of the terminal devices. Therefore, a sound guide channel is needed to connect a front cavity of the speaker and the sound output hole. Such a structure is likely to cause resonance of the front cavity of the speaker, making the speaker form a relatively high high-frequency resonance peak at a frequency band of 3.5kHz to 6kHz. This frequency band belongs to a range relatively sensitive to a human ear, and the high-frequency resonance peak causes a relatively harsh sense of hearing, thereby affecting use experience of a user. CN106162459A discloses a speaker box, which includes an upper cover, a lower cover combined with the upper cover to form a storage space, and a speaker unit accommodated in the storage space, the speaker unit includes a diaphragm, the upper cover and the diaphragm forms a front acoustic cavity, and the speaker box is also provided with a sound output channel that leads the sound generated by the speaker unit out. The front acoustic cavity and the sound output channel form a front cavity, and the speaker box also includes a leakage structure, the leakage structure includes a sealing cover arranged above the upper cover and a leakage hole through the upper cover, the upper cover and the sealing cover form a cavity, and the leakage hole connects the front cavity to the cavity. CN106101956A discloses a speaker box, including: an upper cover with a top wall, a lower cover, a speaker unit and a leakage structure accommodated between the upper cover and the lower cover, the speaker unit includes a diaphragm, and the upper cover and the diaphragm forms a front acoustic cavity, the speaker box is also provided with a sound output channel connected to the front acoustic cavity, the front acoustic cavity and the sound output channel together forms the front cavity, the leakage structure includes a sealing cover and a leakage tube provided on the top wall, the upper cover and the sealing cover form a cavity, and the leakage tube connects the front cavity to the cavity, and the leakage tube includes a first opening end communicating with the cavity, a second opening end communicating with the front cavity and a connecting channel between the first opening end and the second opening end. US20090136055A1 discloses a transducer system for an active noise compensation apparatus, which has a first end at the ear side and an electroacoustic transducer. The electroacoustic transducer has a diaphragm system and a magnet system, wherein the central region of the diaphragm system is curved towards the magnet system and is in the form of an inverted calotte. A sensor microphone is arranged in a volume between the first end and the region of the curvature of the diaphragm system. US20090323995A1 discloses a miniature acoustic network comprises a substantially planar member having an acoustic device indented into a major surface thereof and configured to co-operate with another acoustic device formed, at least in part, within the planar member to form the acoustic network. Another member is juxtaposed with the surface of the planar member and forms a closure for the network. Currently, a length of the sound output channel is usually extended to form a secondary resonance in the industry, to disperse energy of the high-frequency resonance peak of the front cavity. However, a longer sound output channel occupies larger space, thereby affecting arrangement of a battery in the terminal device. SUMMARY The present disclosure discloses a speaker and a terminal device as defined in the appended set of claims. BRIEF DESCRIPTION OF DRAWINGS The accompanying drawings described herein are used to provide a further understanding of the present disclosure and constitute a part of the present disclosure. The illustrative embodiments of the present disclosure and descriptions thereof are used to explain the present disclosure, and do not constitute any improper limitation on the present disclosure. In the accompanying drawings: FIG. 1 is a schematic structural exploded view of a speaker disclosed in an embodiment of the present disclosure;FIG. 2 is a cutaway drawing of a speaker disclosed in an embodiment of the present disclosure; andFIG. 3 is a schematic diagram of a three-dimensional structure of a speaker disclosed in an embodiment of the present disclosure. Reference signs: 100: speaker housing, 110: first housing, 120: second housing, 121: sound output channel, 122: housing body, 1221: first mounting hole, 123: support sheet, 1231: first groove, 1232: support platform, 124: sealing sheet, 130: tube member, 140: fasteni