Bone conduction loudspeaker and Bluetooth earphone

Abstract

The utility model belongs to the technical field of earphones, and particularly relates to a bone conduction loudspeaker which comprises a shell (1), a PCB (2) and a vibration system arranged in the shell and connected with the shell, and the vibration system comprises an elastic piece (3), a first washer (4) arranged on the elastic piece, a magnet (5) arranged on the first washer and a second washer (6) arranged on the magnet. The elastic sheet, the first washer, the magnet and the second washer are fixedly connected together; the utility model further provides the bone conduction loudspeaker using the bone conduction loudspeaker and the Bluetooth earphone adopting the bone conduction loudspeaker, sound is transmitted in a bone conduction mode, so that the loudspeaker is prevented from being plugged into an ear when the bone conduction loudspeaker is used, and some ear health problems caused by the fact that an ear canal is closed by an in-ear earphone are effectively avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of earphones, in particular to a Bluetooth earphone and a bone conduction speaker used thereon. Background Art

[0002] With the widespread use of electronic products such as mobile phones and tablets, Bluetooth headsets have also become widely used as wireless headphones. However, traditional Bluetooth headset speakers can cause hearing damage over time, with in-ear headphones being the most susceptible. Once inserted into the ear canal, in-ear headphones seal the ear canal, preventing airflow and placing the sound source close to the eardrum. This can cause some damage to the ear over time. Therefore, bone conduction headphones using bone conduction speakers have gradually entered the market and are gaining popularity. Bone conduction is a method of sound transmission that converts sound into mechanical vibrations of varying frequencies, transmitting sound waves through the skull, bony labyrinth, inner ear lymph, the ossicle, and auditory center. Utility Model Content

[0003] In order to overcome the deficiencies of the prior art, one of the objectives of the present invention is to provide a bone conduction speaker.

[0004] The second purpose is to provide a Bluetooth headset using the aforementioned bone conduction speaker.

[0005] The technical solution for achieving the first purpose is: a bone conduction speaker, including a shell, a PCB board, and a vibration system arranged in and connected to the shell, the vibration system including a spring, a first washer arranged on the spring, a magnet arranged on the first washer, and a second washer arranged on the magnet; the spring, the first washer, the magnet and the second washer are fixedly connected together.

[0006] Preferably, the spring piece, the first washer, the magnet and the second washer are stacked together and fixed together by a screw vertically passing through the four.

[0007] Preferably, both ends of the housing are provided with openings, one end of the opening is provided with a T-shaped cover, the PCB board is arranged inside the outer surface of the T-shaped cover; a tuning net is provided on the surface of the PCB board.

[0008] Preferably, it further comprises a voice coil, one end of which is inserted into the inner surface of the T-shaped cover; and the second washer is located inside the other end of the voice coil.

[0009] Preferably, a protective cover is provided at the opening at the other end of the shell, and the elastic piece is located inside the protective cover; a central hole is provided in the protective cover.

[0010] Preferably, the outer shell is cylindrical; the T-shaped cover is circular, and is formed integrally by an outer cylinder and an inner cylinder coaxial with the outer cylinder; there is an annular groove between the outer cylinder and the inner cylinder, and a radial boss is provided on the outer edge of the outer cylinder; the radial boss is connected to the end face of the outer shell.

[0011] Preferably, the opening of the inner cylinder is located inside the outer shell, and the opening of the outer cylinder is located outside the outer shell; the PCB board is arranged on the inner bottom plate of the inner cylinder and located inside the outer cylinder; one end of the voice coil is inserted into the opening of the inner cylinder.

[0012] Preferably, both the inner bottom plate and the PCB board are provided with perforations, and the perforations in the two are aligned; the tuning net is located at the perforations in the PCB board and covers the perforations.

[0013] Preferably, the inner wall of the other end of the shell is provided with an inner step portion, and the edge of the spring is provided at the inner step portion; the protective cover is provided with a protrusion protruding from the end of the shell, and the center hole is located in the protrusion; the open end of the protective cover is inserted into the shell and abuts against the spring.

[0014] The technical solution for achieving the first purpose is: a Bluetooth headset, including the aforementioned bone conduction speaker.

[0015] Technical effect: The bone conduction speaker of the present invention and the Bluetooth headset using the same transmit sound through bone conduction, thereby avoiding the need to plug the speaker into the ear when in use, and effectively avoiding some ear health problems caused by in-ear headphones closing the ear canal. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A three-dimensional diagram of a speaker according to an embodiment of the present invention;

[0017] Figure 2 A three-dimensional diagram of the speaker according to an embodiment of the present invention from another perspective;

[0018] Figure 3 This is an exploded view of a speaker according to an embodiment of the present invention;

[0019] Figure 4 This is a cross-sectional view of a speaker according to an embodiment of the present invention.

[0020] Figure 1: Housing 1, inner step 101, PCB board 2, spring 3, first washer 4, magnet 5, second washer 6, screw 7, T-shaped cover 8, outer cylinder 801, inner cylinder 802, inner bottom plate 802a, annular groove 803, radial boss 804, tuning mesh 9, voice coil 10, protective cover 11, center hole 1101, protrusion 1102, through-hole 12. DETAILED DESCRIPTION

[0021] In order to enable those skilled in the art to better understand the present invention, the present invention will be described in further detail below with reference to the accompanying drawings and implementation methods.

[0022] like Figure 3-4 As shown, an embodiment of the present invention provides a bone conduction speaker, including a shell 1, a PCB board 2, and a vibration system arranged in the shell and connected thereto, the vibration system including a spring 3, a first washer 4 arranged on the spring, a magnet 5 arranged on the first washer, and a second washer 6 arranged on the magnet; the spring, the first washer, the magnet and the second washer are fixedly connected together.

[0023] like Figure 4 Specifically, in this embodiment, the spring piece 3, first washer 4, magnet 5, and second washer 6 are stacked and fixed together by a screw 7 that passes vertically through the four. The screw can be made of aluminum. Through holes for the screw are provided in the spring piece 3, first washer 4, magnet 5, and second washer 6, and these through holes are coaxially arranged.

[0024] like Figure 3 As shown, in this embodiment, the housing 1 has openings at both ends, a T-shaped cover 8 is provided at one end of the opening, and the PCB board 2 is provided inside the outer surface of the T-shaped cover; a tuning net 9 is provided on the surface of the PCB board. Figure 1-4 As shown, here, the outer shell 1 is cylindrical; the T-shaped cover 8 is circular and is integrally formed from an outer cylinder 801 and an inner cylinder 802 coaxial with the outer cylinder, i.e., the two are processed together through an integral molding process. An annular groove 803 is provided between the outer and inner cylinders, and a radial boss 804 is provided on the outer edge of the outer cylinder 801; during assembly, the radial boss connects to the end face of the outer shell 1. The inner and outer cylinders 802 and 801 are both open at one end and closed at the other.

[0025] like Figure 4 As shown, during assembly, the opening of the inner cylinder 802 is located inside the outer shell 1, and the opening of the outer cylinder 801 is located outside the outer shell. The PCB board 2 is placed on the inner bottom plate 802a of the inner cylinder and located inside the outer cylinder. With this structure, the surface of the PCB board 2 is flush with the surface of the outer cylinder 801.

[0026] like Figure 4 As shown, the inner bottom plate 802a and the PCB board 2 are both provided with perforations 12 and the perforations in the two are aligned; the tuning net 9 is located at the perforation in the PCB board 2 and blocks the perforation. With this structure, the interior of the housing 1 is connected to the outside world and the tuning net 9 through the perforation 12.

[0027] like Figure 3-4As shown, the voice coil 10 is also included. The voice coil 10 is cylindrical and has openings at both ends. One end of the voice coil is inserted into the inner surface of the T-shaped cover 8, that is, into the opening of the inner cylinder 802. The second washer 6 is located inside the other end of the voice coil 10. Specifically, one end of the voice coil 10 is inserted into the opening of the inner cylinder 802.

[0028] like Figure 1-4 As shown, a protective cover 11 is provided at the opening at the other end of the housing 1 , and the elastic piece 3 is located inside the protective cover; a central hole 1101 is provided in the protective cover.

[0029] like Figure 4 As shown, the inner wall of the other end of the shell 1 is provided with an inner step 101, and the edge of the spring 3 is provided at the inner step; the protective cover 11 is provided with a protrusion 1102 protruding from the end of the shell 1, and the center hole 1101 is located in the protrusion; the open end of the protective cover 11 is inserted into the shell and abuts against the spring 3 to fix the spring 3 in the shell; the diameter of the spring 3 here is consistent with the inner diameter of the inner step and the spring 3 is coaxial with the shell 1; the other end of the shell is connected to the outside through the center hole 1101.

[0030] The present invention also provides a Bluetooth headset, which uses the bone conduction speaker of the embodiment of the present invention to replace the traditional speaker.

[0031] In the above description, it should be noted that the terms "installed", "connected", "connected" and other corresponding terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, an indirect connection through an intermediate medium, or the internal connection of two components; "provided in" should be understood as "installed in, set in", including fixed installation, movable installation and other installation methods.

[0032] Obviously, the embodiments described above are only some of the embodiments of the present invention, not all of them. The drawings provide preferred embodiments of the present invention, but do not limit the scope of the present invention. The present invention can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive. Any equivalent structure made by using the contents of the present invention specification and drawings, directly or indirectly applied in other related technical fields, is also within the scope of protection of the present invention patent.

Claims

1. A bone conduction speaker, comprising a housing (1) and a PCB (2), characterized in that: The invention also includes a vibration system arranged in the shell and connected to the shell, wherein the vibration system includes a spring (3), a first washer (4) arranged on the spring, a magnet (5) arranged on the first washer, and a second washer (6) arranged on the magnet; the spring, the first washer, the magnet and the second washer are fixedly connected together.

2. The bone conduction speaker according to claim 1, wherein: The spring piece (3), the first washer (4), the magnet (5) and the second washer (6) are stacked together and fixedly connected together by a screw (7) vertically passing through the four.

3. The bone conduction speaker according to claim 2, wherein: The housing (1) is provided with openings at both ends, a T-shaped cover (8) is provided at one end of the opening, and the PCB board (2) is arranged inside the outer surface of the T-shaped cover; a tuning net (9) is provided on the surface of the PCB board.

4. The bone conduction speaker according to claim 3, wherein: It also includes a voice coil (10), one end of which is inserted into the inner surface of the T-shaped cover (8); and the second washer (6) is located inside the other end of the voice coil (10).

5. The bone conduction speaker according to claim 3, wherein: A protective cover (11) is provided at the opening at the other end of the housing (1), and the spring piece (3) is located inside the protective cover; a central hole (1101) is provided in the protective cover.

6. The bone conduction speaker according to claim 4, wherein: The outer shell (1) is cylindrical; the T-shaped cover (8) is circular and is formed integrally from an outer cylinder (801) and an inner cylinder (802) coaxial with the outer cylinder; an annular groove (803) is provided between the outer cylinder and the inner cylinder; a radial boss (804) is provided on the outer edge of the outer cylinder (801); and the radial boss is connected to the end face of the outer shell (1).

7. The bone conduction speaker according to claim 6, wherein: The opening of the inner cylinder (802) is located inside the outer shell (1), and the opening of the outer cylinder (801) is located outside the outer shell; the PCB board (2) is arranged on the inner bottom plate (802a) of the inner cylinder and is located inside the outer cylinder; one end of the voice coil (10) is inserted into the opening of the inner cylinder (802).

8. The bone conduction speaker according to claim 7, wherein: The inner bottom plate (802a) and the PCB board (2) are both provided with perforations (12), and the perforations in the two are aligned; the tuning net (9) is located at the perforation in the PCB board (2) and blocks the perforation.

9. The bone conduction speaker according to claim 5, wherein: The inner wall of the other end of the shell (1) is provided with an inner step portion (101), and the edge of the spring piece (3) is provided at the inner step portion; the protective cover (11) is provided with a protruding portion (1102) protruding from the end of the shell (1), and the central hole (1101) is located in the protruding portion; the open end of the protective cover (11) is inserted into the shell and abuts against the spring piece (3).

10. A Bluetooth headset, characterized in that: A bone conduction speaker comprising the bone conduction speaker according to any one of claims 1 to 9.

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