Loudspeaker with novel magnetic field structure

Abstract

A loudspeaker with a novel magnetic field structure comprises a basin frame, a basin ring, a sound basin, a voice coil, a magnet and an armature, the sound basin is connected with the basin ring through a folding ring, the magnet is fixedly connected with the armature, the armature is fixedly connected with the basin frame, the voice coil is connected with the sound basin, and the magnet is installed on the inner side of the voice coil. The magnets comprise a first magnet and a second magnet, and the first magnet and the second magnet are mounted on the same axis; the N end of the first magnet and the N end of the second magnet are oppositely and closely installed, or the S end of the first magnet and the S end of the second magnet are oppositely and closely installed. According to the utility model, the traditional magnet structure is broken through, the audio playback power is greatly improved, audio distortion is avoided, and the audio quality and the audio playback effect are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the electrical appliance element in the electrical field, specifically point to a new loudspeaker of magnetic field structure. BACKGROUND

[0002] It is known that the loudspeaker is composed of a frame, a ring, a cone, a voice coil, a ring magnet and an armature, the frame and the ring are connected and fixed, the cone is connected and fixed with the ring through a folded ring, the ring magnet and the armature are both installed and fixed on the frame, the ring magnet is located outside the voice coil, the ring magnet generates a single magnetic field through the armature, and the voice coil is connected and fixed with the cone. When audio current is input into the voice coil, the magnetic field generated by the voice coil interacts with the magnetic field of the ring magnet through the armature, and the result is that the voice coil generates vibration displacement to drive the cone to vibrate and emit sound. This traditional loudspeaker magnetic field structure has a fundamental defect and disadvantage, that is, the ring magnet forms a single NS magnetic field structure through the armature, so that the positions of the two ends of the voice coil cannot be flush with the two ends of the magnetic field, otherwise the two ends of the magnetic field of the voice coil are attracted or repelled to form a static dead point, and thus the voice coil cannot move. Therefore, when the voice coil is installed, it can only be installed in a staggered manner. Even if the voice coil is installed in a staggered manner with the single magnetic field, there is still a static dead point, that is, when the voice coil is displaced to the position where the end of the voice coil is aligned with the end of the single magnetic field under the action of the magnetic field force, the magnetic pole of the end of the voice coil is attracted to the magnetic pole of the end of the single magnetic field, and thus the voice coil cannot move, forming a static dead point. Until the polarity of the audio current is changed, the voice coil can move in the reverse direction again. This static dead point area will cause serious distortion of audio vibration, affect the quality of audio and the effect of sound reproduction. SUMMARY

[0003] The utility model wants to solve the technical problem in the prior art, and provides a loudspeaker with a new magnetic field structure, breaks through the traditional magnet structure, greatly improves the power of the loudspeaker, avoids audio distortion, and improves the quality of audio and the effect of sound reproduction.

[0004] The utility model adopts the technical scheme: a loudspeaker with a new magnetic field structure, which comprises a frame, a ring, a cone, a voice coil, a magnet and an armature, the cone is connected with the ring through a folded ring, the magnet is connected and fixed with the armature, the armature is connected and fixed with the frame, the voice coil is connected with the cone, and the magnet is installed on the inner side of the voice coil. The magnet comprises a first magnet and a second magnet, and the first magnet and the second magnet are installed on the same axis. The N end of the first magnet is installed close to the N end of the second magnet, and the S end of the first magnet and the S end of the second magnet are installed on the outer sides of the magnet axis. Alternatively, the S end of the first magnet is installed close to the S end of the second magnet, and the N end of the first magnet and the N end of the second magnet are installed on the outer sides of the magnet axis.

[0005] In the above technical scheme, the gap between the same polarity ends of the first magnet and the second magnet is provided with an insulating gasket.

[0006] In the technical scheme, the gap between the same polarity end of the first magnet and the second magnet is connected by adhesive.

[0007] In the technical scheme, the same polarity end of the first magnet and the second magnet is directly connected.

[0008] In the technical scheme, the first magnet and the second magnet are both provided with an axis through hole, and a screw is fixed on the armature after penetrating the axis through hole of the first magnet and the axis through hole of the second magnet.

[0009] In the technical scheme, the voice coil is installed on the outside of the magnet, and the position is that the two ends of the voice coil are respectively located in the middle part of the radial outside of the first magnet and the middle part of the radial outside of the second magnet.

[0010] Substantial features, technical principles and beneficial effects:

[0011] The substantial feature of the utility model is that the annular magnet outside the traditional voice coil is cancelled, and the axis segment of the T-shaped armature is cut off, and instead, two magnets are installed on the inside of the voice coil, located in the axis extension segment of the T-shaped armature, and one of the two magnets is installed with the same polarity end facing each other, that is, the S end of the first magnet is installed with the S end of the second magnet facing each other, or the N end of the first magnet is installed with the N end of the second magnet facing each other, and the two ends of the voice coil are respectively located in the middle part of the radial outside of the first magnet and the second magnet.

[0012] The technical principle of the utility model is as follows: Figure 2 As shown in the figure, the S end of the first magnet is installed with the S end of the second magnet facing each other, and when the voice coil is connected with the left end of the audio signal as a positive signal to generate a positive N magnetic field and the right end as a negative signal to generate an S magnetic field, the N end of the left first magnet generates a repulsion thrust F1 in the right direction to the N end of the voice coil, and the S end of the first magnet generates an attraction force F2 in the right direction to the N end of the voice coil, at the same time, the S end of the right second magnet generates a repulsion thrust F3 in the right direction to the S end of the voice coil, and the N end of the second magnet generates an attraction force F4 in the right direction to the S end of the voice coil, therefore, the first and second magnets generate a total of four rightward forces in the same direction to the voice coil: F1+F2+F3+F4. Similarly, when the voice coil is connected with the reverse audio signal, the left end generates an S magnetic field as a negative signal and the right end generates an N magnetic field as a positive signal, the first and second magnets generate a total of four leftward forces to the voice coil: F5+F6+F7+F8.

[0013] The beneficial effects of the present invention are as follows: because the first and second magnets are mounted with their like-polarity ends facing each other, the voice coil is simultaneously driven by four combined magnetic forces after an audio signal is applied, exponentially amplifying the driving torque of the magnetic field on the voice coil. This undoubtedly greatly improves the speaker's sound output, enabling high-power applications such as large square gatherings, outdoor concert venues, and aircraft carrier sound reinforcement systems. Furthermore, the novel magnetic field structure of the present invention results from the combined action of the first and second magnets on the voice coil, and the two ends of the voice coil are located midway outside the two magnets. Therefore, there is no dead point of force, and the voice coil vibration waveform maintains a complete sinusoidal waveform, resulting in a perfect audio waveform. Consequently, the speaker's audio signal is not distorted, resulting in high audio quality and excellent sound output, thus resolving the technical problems of low power and audio distortion in conventional speakers. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the structure of the utility model;

[0015] Figure 2 This is the technical principle diagram of the utility model;

[0016] Figure 3 This is a schematic diagram of traditional speaker technology.

[0017] Figure annotation:

[0018] 1—cone ring, 2—folding ring, 3—cone, 4—cone frame, 5—armature, 6—first magnet, 7—second magnet, 8—fastening screw, 9—voice coil. DETAILED DESCRIPTION

[0019] See also Figure 1 The loudspeaker with a new magnetic field structure of the present invention includes a basin frame 4, a basin ring 1, a sound cone 3, a voice coil 9, a magnet and an armature 5. The sound cone 3 is connected to the basin ring 1 through a folding ring 2. The magnet and the armature are fixed by fastening screws 8. The armature 5 is fixed to the basin frame. The voice coil 9 is connected to the sound cone 3. The magnet is installed on the inner side of the voice coil 9. The magnet includes a first magnet 6 and a second magnet 7. The first magnet 6 and the second magnet 7 are installed on the same axis. The N end of the first magnet and the N end of the second magnet are installed close to each other, and the S end of the first magnet and the S end of the second magnet are installed at the two ends outside the magnet axis. Or: the S end of the first magnet and the S end of the second magnet are installed close to each other, and the N end of the first magnet and the N end of the second magnet are installed at the two ends outside the magnet axis. Figure 1 It can be seen that the magnetic field structure of the present invention eliminates the traditional loudspeaker annular magnet and replaces it with two magnets with ends of the same polarity facing each other and installed close to each other.

[0020] The gap between the same polarity end of the first magnet 6 and the second magnet 7 is provided with an insulating gasket or is connected by adhesive or direct connection.

[0021] The first magnet 6 and the second magnet 7 are both provided with axis through holes, and the screws are fixed on the armature 5 after passing through the axis through holes of the first magnet and the second magnet.

[0022] The voice coil is installed outside the magnets, and the position is that the two ends of the voice coil are respectively located in the middle of the radial outer side of the first magnet and the radial outer side of the second magnet.

[0023] From Figure 2 It can be seen that the technical principle of the utility model is that the voice coil magnetic pole is subjected to four resultant forces in the same direction of the two magnets to the left or to the right, and there is no static dead point, which not only amplifies the power, but also does not appear audio distortion. Figure 3 It can be seen that the traditional loudspeaker is a single magnetic field structure, and the power is small and audio distortion appears.

Claims

1. A loudspeaker with a novel magnetic field structure, characterized by: The invention comprises a basin frame, a basin ring, a sound cone, a voice coil, a magnet and an armature. The sound cone is connected to the basin ring through a folding ring, the magnet is fixedly connected to the armature, the armature is fixedly connected to the basin frame, the voice coil is connected to the sound cone, and the magnet is mounted on the inner side of the voice coil. The magnet comprises a first magnet and a second magnet, and the first magnet and the second magnet are mounted on the same axis. The N end of the first magnet and the N end of the second magnet are mounted close to each other, and the S end of the first magnet and the S end of the second magnet are mounted at the two ends outside the magnet axis. Alternatively, the S end of the first magnet and the S end of the second magnet are mounted close to each other, and the N end of the first magnet and the N end of the second magnet are mounted at two ends outside the magnet axis; the voice coil is mounted outside the magnet, and its position is: the two ends of the voice coil are respectively located in the middle of the radial outer side of the first magnet and the middle of the radial outer side of the second magnet.

2. The loudspeaker with a novel magnetic field structure according to claim 1, characterized in that: An insulating gasket is provided in the gap between the first magnet and the second magnet with the same polarity ends facing each other and being installed close to each other.

3. The loudspeaker with a novel magnetic field structure according to claim 1, characterized in that: The first magnet and the second magnet are installed with the same polarity ends facing each other and close to each other, and the gap between them is connected by gluing.

4. The loudspeaker with a novel magnetic field structure according to claim 1, characterized in that: The first magnet and the second magnet are installed close to each other with the same polarity ends facing each other and are directly connected.

5. The loudspeaker with a novel magnetic field structure according to claim 1, characterized in that: The first magnet and the second magnet are both provided with an axial through hole, and the screw is fixed on the armature after passing through the axial through hole of the first magnet and the axial through hole of the second magnet.

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