Loudspeaker with adjustable magnetic attraction force

Abstract

The utility model discloses a loudspeaker with adjustable magnetic attraction force. The loudspeaker comprises a loudspeaker single body, a shell and a magnetic piece, the loudspeaker single body comprises a basin frame, and a vibration assembly and a magnetic circuit assembly which are respectively arranged on two sides of the basin frame; a rear sound cavity is arranged in the shell, and a sound outlet communicated with the rear sound cavity is formed in the shell; the loudspeaker unit is arranged on the inner side of the sound outlet, and the vibration assembly covers the sound outlet; the magnetic piece is installed on the shell, located on the side, away from the vibration assembly, of the magnetic circuit assembly and can move relative to the loudspeaker single body to be close to or away from the magnetic circuit assembly. When the magnetic piece moves to the position close to the magnetic circuit assembly, the magnetic piece and the magnetic circuit assembly interact to increase the magnetic attraction force of the loudspeaker, so that the loudspeaker can be stably attracted to a preset position, meanwhile, the magnetic piece increases the magnetic field intensity of the magnetic circuit assembly, and the acoustic performance of the loudspeaker is effectively improved; when the magnetic piece moves to the position far away from the magnetic circuit assembly, the magnetic attraction force of the loudspeaker is weakened, and a user can easily take the loudspeaker.

Description

Technical Field

[0001] The utility model relates to the technical field of acoustic equipment, in particular to a speaker with adjustable magnetic attraction. Background Art

[0002] With the rapid development of science and technology and people's needs for life, speakers have been widely used in modern people's lives, mainly used in electronic devices such as televisions, computers, mobile phones, or used as audio output devices in conjunction with other electronic devices. At present, a large number of speakers on the market are fixed on magnetic brackets by magnetic adsorption. In order to avoid accidental drop of the speaker, the magnetic attraction of the speaker is strong, which makes it inconvenient to pick up the speaker. When users use too much force to pick up the speaker, they may lose their grip and cause the speaker to fall and be damaged. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a speaker with adjustable magnetic attraction force.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is: a speaker with adjustable magnetic attraction, comprising a speaker unit, a shell and a magnetic component; the speaker unit comprises a basin frame and a vibration component and a magnetic circuit component respectively arranged on both sides of the basin frame; a rear sound cavity is arranged in the shell, and a sound outlet connected to the rear sound cavity is opened on the shell; the speaker unit is arranged on the inner side of the sound outlet, and the vibration component covers the sound outlet; the magnetic component is installed on the shell, the magnetic component is located on the side of the magnetic circuit component away from the vibration component, and the magnetic component can move relative to the speaker unit to approach or move away from the magnetic circuit component.

[0005] Furthermore, the housing includes a first shell and a second shell, the first shell and the second shell are threadedly connected, the speaker unit is arranged on the first shell, and the magnetic component is arranged on the second shell.

[0006] Furthermore, the magnetic member and the second shell are interference fit or connected by threads.

[0007] Furthermore, the magnetic component is threadedly connected to the shell.

[0008] Furthermore, the shell is provided with a threaded hole connected to the rear acoustic cavity, and the magnetic member is cooperatively connected to the threaded hole.

[0009] Furthermore, a limiting structure is provided on the shell, and the limiting structure is located between the magnetic component and the magnetic circuit assembly.

[0010] Furthermore, one end of the magnetic component away from the speaker unit is exposed to the housing, and a limiting boss is provided on the outer peripheral surface of the end of the magnetic component away from the speaker unit.

[0011] Furthermore, the magnetic circuit assembly includes a yoke and a magnetic steel, the yoke is installed on a side of the basin frame away from the vibration assembly, and the magnetic steel is connected to the inner side of the yoke.

[0012] Furthermore, the yoke includes a bottom plate and a peripheral wall formed by bending and extending the bottom plate toward a side close to the vibration component, and the magnetic steel is connected to the inner side surface of the bottom plate.

[0013] Furthermore, the magnetic circuit assembly also includes a washer, and the washer is connected to a side of the magnetic steel away from the yoke.

[0014] The beneficial effects of the utility model are as follows: the speaker with adjustable magnetic attraction has a magnetic part movably mounted on the outer shell, and when the magnetic part moves to a position close to the magnetic circuit assembly, the magnetic part and the magnetic circuit assembly interact with each other to increase the magnetic attraction of the speaker, so that the speaker can be firmly adsorbed at a preset position, and at the same time, the magnetic part increases the overall magnetic field strength of the magnetic circuit assembly, effectively improving the acoustic performance of the speaker; when the magnetic part moves to a position away from the magnetic circuit assembly, the magnetic attraction of the speaker is weakened, and the user can easily pick up the speaker. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The overall structure of the speaker with adjustable magnetic attraction force according to the first embodiment of the utility model is shown in FIG. Figure 1 ;

[0016] Figure 2 The overall structure of the speaker with adjustable magnetic attraction force according to the first embodiment of the utility model is shown in FIG. Figure 2 ;

[0017] Figure 3 It is a cross-sectional view of a loudspeaker with adjustable magnetic attraction force according to the first embodiment of the utility model;

[0018] Figure 4 This is a schematic diagram of the overall structure of a speaker with adjustable magnetic attraction force according to the second embodiment of the utility model;

[0019] Figure 5 It is a cross-sectional view of a loudspeaker with adjustable magnetic attraction force according to the second embodiment of the present invention.

[0020] Description of labels:

[0021] 1. Speaker unit; 11. Basin frame; 12. Vibration assembly; 121. Diaphragm; 122. Voice coil; 13. Magnetic circuit assembly; 131. Yoke; 132. Magnetic steel; 133. Washer;

[0022] 2. Shell; 21. Rear sound cavity; 22. Sound outlet; 23. First shell; 24. Second shell; 25. Threaded hole; 26. Limiting structure;

[0023] 3. Magnetic part; 31. Limiting boss. DETAILED DESCRIPTION

[0024] In order to explain the technical content, achieved objectives and effects of the present invention in detail, the following is an explanation in conjunction with the implementation modes and the accompanying drawings.

[0025] Please refer to Figures 1 to 5 A speaker with adjustable magnetic attraction comprises a speaker unit 1, a shell 2 and a magnetic component 3; the speaker unit 1 comprises a basin frame 11 and a vibration component 12 and a magnetic circuit component 13 respectively arranged on both sides of the basin frame 11; a rear sound cavity 21 is arranged in the shell 2, and a sound outlet 22 connected to the rear sound cavity 21 is opened on the shell 2; the speaker unit 1 is arranged on the inner side of the sound outlet 22, and the vibration component 12 covers the sound outlet 22; the magnetic component 3 is installed on the shell 2, and the magnetic component 3 is located on the side of the magnetic circuit component 13 away from the vibration component 12, and the magnetic component 3 can move relative to the speaker unit 1 to approach or move away from the magnetic circuit component 13.

[0026] From the above description, it can be seen that the beneficial effects of the utility model are: the speaker with adjustable magnetic attraction force has the magnetic component 3 movably installed on the shell 2, and when the magnetic component 3 moves to a position close to the magnetic circuit assembly 13, the magnetic component 3 and the magnetic circuit assembly 13 interact with each other to increase the magnetic attraction force of the speaker, so that the speaker can be firmly adsorbed at a preset position, and at the same time, the magnetic component 3 increases the overall magnetic field strength of the magnetic circuit assembly 13, effectively improving the acoustic performance of the speaker; when the magnetic component 3 moves to a position away from the magnetic circuit assembly 13, the magnetic attraction force of the speaker is weakened, and the user can easily pick up the speaker.

[0027] Furthermore, the housing 2 includes a first shell 23 and a second shell 24 , the first shell 23 and the second shell 24 are threadedly connected, the speaker unit 1 is arranged on the first shell 23 , and the magnetic component 3 is arranged on the second shell 24 .

[0028] It can be known from the above description that the relative positions of the magnetic member 3 and the magnetic circuit assembly 13 can be changed by relatively rotating the first shell 23 and the second shell 24, thereby adjusting the magnetic attraction of the speaker.

[0029] Furthermore, the magnetic member 3 and the second shell 24 are interference fit or connected by threads.

[0030] It can be seen from the above description that the connection method between the magnetic member 3 and the second shell 24 is simple and easy to assemble.

[0031] Furthermore, the magnetic member 3 is threadedly connected to the housing 2 .

[0032] It can be known from the above description that the relative position of the magnetic component 3 and the magnetic circuit assembly 13 can be changed by relatively rotating the housing 2 and the magnetic component 3, thereby adjusting the magnetic attraction of the speaker.

[0033] Furthermore, the housing 2 is provided with a threaded hole 25 communicating with the rear acoustic cavity 21 , and the magnetic member 3 is cooperatively connected to the threaded hole 25 .

[0034] It can be seen from the above description that the threaded hole 25 connected to the rear acoustic cavity 21 can prevent the housing 2 from weakening the magnetic field strength between the magnetic component 3 and the magnetic circuit assembly 13 .

[0035] Furthermore, a limiting structure 26 is provided on the housing 2 , and the limiting structure 26 is located between the magnetic component 3 and the magnetic circuit assembly 13 .

[0036] It can be known from the above description that the limiting structure 26 is used to prevent the magnetic member 3 from contacting the speaker unit 1 and causing damage to the speaker unit 1 .

[0037] Furthermore, one end of the magnetic component 3 away from the speaker unit 1 is exposed from the housing 2 , and a limiting boss 31 is provided on the outer peripheral surface of the end of the magnetic component 3 away from the speaker unit 1 .

[0038] As can be seen from the above description, the limiting boss 31 is used to limit the extreme positions of the housing 2 and the magnetic component 3 to prevent the magnetic component 3 from entering the housing 2 or contacting the speaker unit 1 and causing damage to the speaker unit 1 .

[0039] Furthermore, the magnetic circuit assembly 13 includes a yoke 131 and a magnetic steel 132 . The yoke 131 is installed on a side of the basin frame 11 away from the vibration assembly 12 , and the magnetic steel 132 is connected to the inner side of the yoke 131 .

[0040] It can be seen from the above description that the yoke 131 is used to guide the magnetic flux lines of the magnetic steel 132 , which is beneficial to increase the B value and improve the use efficiency of the magnetic steel 132 .

[0041] Furthermore, the yoke 131 includes a bottom plate and a peripheral wall formed by bending and extending the bottom plate toward a side close to the vibration component 12 , and the magnetic steel 132 is connected to the inner side surface of the bottom plate.

[0042] From the above description, it can be seen that the bottom plate and the surrounding wall of the yoke 131 can guide the magnetic flux lines of the magnet 132 more to the position of the voice coil 122 of the vibration component 12, thereby improving the B value and maximizing the use efficiency of the magnet 132.

[0043] Furthermore, the magnetic circuit assembly 13 further includes a washer 133 , and the washer 133 is connected to a side of the magnetic steel 132 away from the yoke 131 .

[0044] From the above description, it can be seen that the washer 133 is used to further guide the magnetic flux lines, which is beneficial to improving the sensitivity of the speaker and reducing distortion.

[0045] Please refer to Figures 1 to 3 Embodiment 1 of the utility model is: a speaker with adjustable magnetic attraction, comprising a speaker unit 1, a shell 2 and a magnetic component 3; the speaker unit 1 comprises a basin frame 11 and a vibration component 12 and a magnetic circuit component 13 respectively arranged on both sides of the basin frame 11; a rear sound cavity 21 is arranged in the shell 2, and a sound outlet 22 connected to the rear sound cavity 21 is opened on the shell 2; the speaker unit 1 is arranged on the inner side of the sound outlet 22, and the vibration component 12 covers the sound outlet 22; the magnetic component 3 is installed on the shell 2, and the magnetic component 3 is located on the side of the magnetic circuit component 13 away from the vibration component 12, and the magnetic component 3 can move relative to the speaker unit 1 to approach or move away from the magnetic circuit component 13.

[0046] Specifically, the vibration assembly 12 includes a diaphragm 121 and a voice coil 122. The diaphragm 121 is connected to a side of the basin frame 11 away from the vibration assembly 12, and the voice coil 122 is connected to the inner side of the diaphragm 121. The magnetic circuit assembly 13 includes a yoke 131 and a magnet 132. The yoke 131 is installed on a side of the basin frame 11 away from the diaphragm 121, and the magnet 132 is connected to the inner side of the yoke 131. The yoke 131 includes a bottom plate and a peripheral wall formed by bending and extending the bottom plate toward a side close to the vibration assembly 12. The magnet 132 is connected to the inner side of the bottom plate. A magnetic gap is formed between the peripheral wall and the magnet 132. The voice coil 122 is arranged between the peripheral wall and the magnet 132, and the voice coil 122 is arranged without contacting the yoke 131, and the voice coil 122 and the magnet 132 are arranged without contacting each other. The diaphragm 121 is circular, the voice coil 122 is cylindrical, the bottom plate of the yoke 131 is circular, the peripheral wall of the yoke 131 is cylindrical, and the magnet 132 is cylindrical. The central axes of the diaphragm 121, the voice coil 122, the yoke 131 and the magnet 132 are collinearly arranged.

[0047] The magnetic circuit assembly 13 further includes a washer 133, which is connected to a side of the magnetic steel 132 away from the yoke 131. Specifically, the washer 133 is cylindrical, and the washer 133 is arranged colinearly with the central axis of the magnetic steel 132. The washer 133 is used to further guide the magnetic flux lines, which is beneficial to improve the sensitivity of the novel speaker and reduce distortion.

[0048] The housing 2 includes a first housing 23 and a second housing 24, the first housing 23 and the second housing 24 are threadedly connected, the speaker unit 1 is arranged on the first housing 23, and the magnetic member 3 is arranged on the second housing 24. Specifically, the magnetic member 3 is preferably a magnet. The housing 2 is cylindrical, and the end surface of the first housing 23 away from the second housing 24 is provided with the sound outlet 22, and the end surface of the second housing 24 away from the first housing 23 is provided with a mounting hole connected to the rear sound cavity 21, and the magnetic member 3 is interference fit with the mounting hole on the second housing 24. The magnetic member 3 is cylindrical, and the central axes of the magnetic member 3, the housing 2 and the speaker unit 1 are arranged in a colinear manner. In other embodiments, it is also feasible to connect the magnetic member 3 with the second housing 24 by threading. It is easy to understand that the relative position of the magnetic member 3 and the magnetic circuit assembly 13 can be changed by rotating the first housing 23 and the second housing 24 relative to each other, thereby adjusting the magnetic attraction and acoustic performance of the speaker. When the magnetic component 3 moves to a position close to the magnetic circuit assembly 13, the magnetic component 3 and the magnetic circuit assembly 13 interact with each other to increase the magnetic attraction of the speaker, so that the speaker can be firmly adsorbed at the preset position. At the same time, the magnetic component 3 increases the overall magnetic field strength of the magnetic circuit assembly 13, effectively improving the acoustic performance of the speaker; when the magnetic component 3 moves to a position away from the magnetic circuit assembly 13, the magnetic attraction of the speaker is weakened, and the user can easily pick up the speaker. At the same time, the rear sound cavity 21 is expanded, and the low-frequency performance of the speaker is enhanced.

[0049] The housing 2 is provided with a limiting structure 26, which is located between the magnetic component 3 and the magnetic circuit assembly 13. Specifically, the limiting structure 26 is an annular boss provided inside the mounting hole, and when the inner side of the magnetic component 3 contacts the limiting structure 26, the relative distance between the magnetic component 3 and the magnetic circuit assembly 13 is minimized.

[0050] Please refer to Figure 4 and Figure 5 The second embodiment of the present invention is a further improvement on the housing 2 and the magnetic member 3 based on the first embodiment, and the difference from the first embodiment is that:

[0051] A threaded hole 25 connected to the rear sound cavity 21 is provided on one end surface of the housing 2 away from the sound outlet 22, and the magnetic member 3 is connected with the threaded hole 25. The relative position of the magnetic member 3 and the magnetic circuit assembly 13 can be changed by rotating the housing 2 and the magnetic member 3 relative to each other, thereby adjusting the magnetic attraction and acoustic performance of the speaker.

[0052] One end of the magnetic component 3 away from the speaker unit 1 is exposed to the outer shell 2, and a limiting boss 31 is provided on the outer peripheral surface of the end of the magnetic component 3 away from the speaker unit 1. Specifically, the limiting boss 31 is non-circular, and the limiting boss 31 and the yoke 131 and the magnetic component 3 are an integrated structure. The maximum width of the limiting boss 31 is greater than the minimum inner diameter of the threaded hole 25. When the speaker with adjustable magnetic attraction is adsorbed on the magnetic bracket, the limiting boss 31 is inserted into the groove on the magnetic bracket that is compatible with it. At this time, the user can adjust the relative position of the magnetic component 3 and the magnetic circuit assembly 13 by rotating the outer shell 2. The limiting boss 31 is also used to limit the extreme positions of the outer shell 2 and the magnetic component 3 to prevent the magnetic component 3 from entering the outer shell 2 or interfering with the speaker unit 1 and causing damage to the speaker unit 1.

[0053] The housing 2 is provided with a limiting structure 26, which is located between the magnetic component 3 and the magnetic circuit assembly 13. Specifically, the limiting structure 26 is an annular boss provided inside the threaded hole 25, and when the inner side of the magnetic component 3 contacts the limiting structure 26, the relative distance between the magnetic component 3 and the magnetic circuit assembly 13 is minimized.

[0054] To sum up, the speaker with adjustable magnetic attraction provided by the utility model has a magnetic component movably installed on the shell. When the magnetic component moves to a position close to the magnetic circuit assembly, the magnetic component and the magnetic circuit assembly interact with each other to increase the magnetic attraction of the speaker, so that the speaker can be firmly adsorbed at a preset position. At the same time, the magnetic component increases the overall magnetic field strength of the magnetic circuit assembly, effectively improving the acoustic performance of the speaker. When the magnetic component moves to a position away from the magnetic circuit assembly, the magnetic attraction of the speaker is weakened, and the user can easily pick up the speaker.

[0055] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent transformations made using the contents of the specification and drawings of the present invention, or directly or indirectly applied in the relevant technical field, are also included in the patent protection scope of the present invention.

Claims

1. A speaker with adjustable magnetic attraction, characterized in that: It includes a speaker unit, a shell and a magnetic component; the speaker unit includes a basin frame and a vibration component and a magnetic circuit component respectively arranged on both sides of the basin frame; a rear sound cavity is arranged in the shell, and a sound outlet connected to the rear sound cavity is opened on the shell; the speaker unit is arranged on the inner side of the sound outlet, and the vibration component covers the sound outlet; the magnetic component is installed on the shell, the magnetic component is located on the side of the magnetic circuit component away from the vibration component, and the magnetic component can move relative to the speaker unit to approach or move away from the magnetic circuit component.

2. The speaker with adjustable magnetic attraction according to claim 1, characterized in that: The housing comprises a first shell and a second shell, the first shell and the second shell are threadedly connected, the speaker unit is arranged on the first shell, and the magnetic member is arranged on the second shell.

3. The speaker with adjustable magnetic attraction according to claim 2, characterized in that: The magnetic member and the second shell are interference fit or connected by threads.

4. The speaker with adjustable magnetic attraction force according to claim 1, characterized in that: The magnetic member is threadedly connected to the shell.

5. The speaker with adjustable magnetic attraction force according to claim 4, characterized in that: The shell is provided with a threaded hole connected to the rear acoustic cavity, and the magnetic member is cooperatively connected with the threaded hole.

6. The speaker with adjustable magnetic attraction force according to claim 5, characterized in that: The shell is provided with a limiting structure, and the limiting structure is located between the magnetic component and the magnetic circuit assembly.

7. The speaker with adjustable magnetic attraction force according to claim 5, characterized in that: One end of the magnetic component away from the speaker unit is exposed to the housing, and a limiting boss is provided on the outer peripheral surface of the end of the magnetic component away from the speaker unit.

8. The speaker with adjustable magnetic attraction force according to claim 1, characterized in that: The magnetic circuit assembly comprises a yoke and a magnetic steel. The yoke is installed on a side of the basin frame away from the vibration assembly, and the magnetic steel is connected to the inner side of the yoke.

9. The speaker with adjustable magnetic attraction force according to claim 8, characterized in that: The yoke comprises a bottom plate and a peripheral wall formed by bending and extending the bottom plate toward a side close to the vibration component, and the magnetic steel is connected to the inner side surface of the bottom plate.

10. The speaker with adjustable magnetic attraction force according to claim 8, characterized in that: The magnetic circuit component also includes a washer connected to a side of the magnetic steel away from the yoke.

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