Loudspeaker

Abstract

The utility model provides a loudspeaker, which belongs to the field of loudspeakers and comprises a basin frame, a vibration system and a magnetic circuit system are arranged on the basin frame, the vibration system comprises a sound basin, a positioning support chip and a voice coil, the sound basin and the positioning support chip are arranged on the basin frame, the voice coil is arranged on the sound basin and the positioning support chip, the positioning support chip comprises a positioning support chip body, and the positioning support chip body is arranged on the positioning support chip body. A supporting arm is upwards arranged on the inner side of the positioning support sheet body; compared with the traditional loudspeaker, the vibration space of the positioning support chip is eliminated, the total height of the product is reduced, the amplitude space of the whole vibration system can be properly increased, and the reliability is improved; the positioning support chip keeps an offset space between the positioning support chip and the magnetic conductive bowl, so that a vibration space does not need to be specially reserved between the positioning support chip and the magnetic conductive bowl, the volume of the woofer is reduced, the Z height is fully utilized, and for a flat woofer, a larger magnet system can be arranged in the woofer and more space is provided for offset, so that the positioning support chip and the magnetic conductive bowl are integrated. And the performance is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of loudspeakers. BACKGROUND

[0002] The function of vehicle low-frequency loudspeaker is mainly to replay low-frequency sound, an excellent vehicle low-frequency loudspeaker not only needs to have better low-frequency diving, higher sensitivity, lower distortion and other acoustic performance parameters, but also needs to have thinner thickness and smaller size to adapt to the narrow installation environment in vehicle, and it must have a new loudspeaker structure to meet the above requirements. The positioning support sheet is an important part of the vehicle low-frequency loudspeaker, which helps to stabilize and balance the coil during vibration. In addition, a good positioning support sheet will help to optimize the mechanical compliance of the transducer suspension (Cms) of the vibration system and reduce the total harmonic distortion (THD).

[0003] Traditionally, as shown in the attached Figure 1 The structure of the existing low-frequency loudspeaker positioning support sheet is flat, and the peripheral and central boundary regions are at the same or substantially the same along the z-axis (z-axis refers to the front-back symmetry axis of the loudspeaker). This flat design will occupy a large amount of z-space, and the horizontal vibration lead-out mode is visible. The disadvantage of this product structure is that it results in a high height and occupies a large space, which is not conducive to small spaces on the vehicle. In order to compress the product volume, they usually compress the lead-out space and reduce the magnetic circuit. However, this not only easily causes the lead to collide with the cone or other parts of the product during vibration, resulting in mechanical sound and other pure tone malfunctions, but also causes power reduction and undesirable resonance frequency. SUMMARY

[0004] The utility model aims at overcoming the shortcomings of the above-mentioned traditional technology and providing a loudspeaker.

[0005] The utility model aims at overcoming the shortcomings of the above-mentioned traditional technology and providing a loudspeaker.

[0006] As an improvement, the support arm includes a support arm body connected to the positioning support body, and the support arm body is inclined towards the voice coil. The support arm body is provided with a support connecting portion fixedly connected to the cone, and the support connecting portion is provided with a voice coil connecting portion fixedly connected to the voice coil.

[0007] As a further improvement, the magnetic circuit system comprises a magnetic conducting bowl arranged on the yoke, the magnetic conducting bowl is provided with a magnetic steel, and the magnetic steel is provided with a magnetic conducting sheet.

[0008] As a further improvement, a gap is arranged between the support connecting part and the top end of the magnetic conducting bowl, and the size of the gap is not less than the maximum displacement during the operation of the loudspeaker.

[0009] As a further improvement, the cone comprises a concave part with a concave structure at the center, the concave part is provided with a protruding part protruding upward, and the inner side of the protruding part is connected with the support connecting part.

[0010] As a further improvement, the protruding part is further provided with a voice coil connecting part connected with the voice coil.

[0011] As a further improvement, the positioning support sheet body is a concentric corrugated annular disc, the concentric corrugated annular disc is folded upward at the connection with the yoke, and the connection surface of the concentric corrugated annular disc at the connection with the yoke is not higher than the wave trough of the concentric corrugated annular disc.

[0012] As a further improvement, a recess is arranged between the voice coil connecting part and the voice coil.

[0013] As a further improvement, the positioning support sheet is further provided with a signal conducting lead, and the signal conducting lead is attached along the positioning support sheet body and the support arm.

[0014] As a further improvement, the bottom of the yoke is provided with a through hole.

[0015] Due to the adoption of the above technical scheme, compared with the prior art, the loudspeaker has the following advantages:

[0016] Firstly, the design of the positioning support sheet can not only be connected with the voice coil, but also be connected with the cone; the positioning principle is different from that in the prior art, the positioning structure is strengthened, and the power of the product is improved.

[0017] Secondly, the positive folding structure of the positioning support sheet has better processability than the traditional reverse folding structure, and the noise problem caused by process operation is avoided.

[0018] Thirdly, the connection of the cone and the positioning support sheet avoids the magnetic conducting bowl in the magnetic circuit system, compared with the traditional loudspeaker, the vibration space of the positioning support sheet is eliminated, the total height of the product is reduced, the vibration system amplitude space is appropriately increased, and the reliability is improved.

[0019] Fourth: The positioning support plate of this new type maintains the offset space between itself and the magnetic cup, so that there is no need to leave a vibration space between the positioning support plate and the magnetic cup, thereby reducing the volume of the woofer and making full use of the Z height (the height in the Z-axis direction, where the Z-axis refers to the front and rear symmetry axis of the woofer). For flat woofers, it will help to set up a larger magnet system inside and provide more space for offset, thereby improving performance.

[0020] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0021] Appendix Figure 1 This is a structural diagram of existing technology;

[0022] Appendix Figure 2 This is a schematic diagram of the structure of this utility model;

[0023] Appendix Figure 3 This is a structural schematic diagram of the present invention from another angle;

[0024] Appendix Figure 4 This is an exploded view of the structure of this utility model;

[0025] Appendix Figure 5 This is a partial cross-sectional view of the present invention;

[0026] Appendix Figure 6 This is a schematic diagram of the structure of the positioning support piece;

[0027] Appendix Figure 7 This is a partial enlarged view of the connection between the cone, the positioning support, and the voice coil of this utility model;

[0028] Appendix Figure 8 This is another structural schematic diagram of the positioning support piece. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] In the description of the utility model, it is understood that the directions or positional relations indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like are the directions or positional relations shown based on the drawings, and are only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as limiting the utility model.

[0031] In the utility model, unless otherwise explicitly specified and limited, the terms "mounting", "setting", "connecting", "fixing", "screw connection" and the like should be understood in a broad sense, for example, can be fixed connection, can also be detachable connection, or integrated; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be the communication inside two elements or the interaction relationship between two elements, unless otherwise explicitly limited, the above-mentioned terms in the utility model can be understood according to the specific meaning of the specific circumstances for the ordinary skilled in the art.

[0032] In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first" and "second" can explicitly or implicitly include one or more features. In the description of the utility model, the meaning of "multiple" is two or more than two, unless otherwise explicitly specified.

[0033] Embodiment one: as shown in the accompanying Figure 2 - the accompanying Figure 7 A loudspeaker, including a support system 1, the support system 1 includes front pad edge 11, basin frame 12, terminal block 13, rear pad edge 14, the terminal block 13 in the support system 1 is connected with the edge part of the basin frame 12, and plays the role of fixing audio signal lead; the front pad edge 11 and the rear pad edge 14 are pasted to the lower part of the basin frame 12, and play the role of auxiliary installation on the door.

[0034] The yoke 12 is provided with a vibration system 2 and a magnetic circuit system 3. The vibration system 2 comprises a cone 21, a positioning support 22 and a voice coil 23. The lower edge of the outer periphery of the cone 21 is fixed to the upper edge of the yoke 12, the lower center edge of the cone 21 is fixed to the support connecting part of the positioning support 22, the lower edge of the outer periphery of the positioning support 22 is fixed to the middle edge of the yoke 12, and the upper part of the voice coil 23 is fixed to the cone 21 and the positioning support 22.

[0035] The magnetic circuit system 3 comprises a magnetic conducting bowl 31 provided on the yoke 12, a magnetic steel 32 provided on the magnetic conducting bowl 31, and a magnetic conducting sheet 33 provided on the magnetic steel 32. The magnetic conducting sheet 33 is fixedly connected to the magnetic steel 32, and the magnetic steel 32 is fixedly connected to the magnetic conducting bowl 31. The three components form a magnetic gap for the voice coil 23 to be placed and moved, and provide a magnetic field. The magnetic circuit system 3 is fixedly connected to the lower center part of the yoke 12.

[0036] The positioning support 22 comprises a positioning support body 221, and a support arm 222 provided on the inner side of the positioning support body 221. The outer side of the positioning support body 221 is fixedly connected to the yoke 12, and the free end of the support arm 222 is fixedly connected to the voice coil 23. The positioning support 22 is directly connected to the voice coil 23 in a traditional planar manner. After the structure of the support arm 222 is added, the positioning support 22 can be connected to the voice coil 23 and the cone 21. The positioning principle is different, and the positioning structure is strengthened, and the power of the product is improved. The positioning support 22 is preferably made of hard paper, but other materials with certain rigidity can also be used.

[0037] The positioning support body 221 is a concentric corrugated annular disc, which is a central axis symmetrical design and is not easy to produce swing vibration, and uses a fatigue-resistant elastic material with good resilience; the concentric corrugated annular disc is located at a position above the connection position of the yoke 12, that is, the concentric corrugated annular disc is folded upward from the connection position of the yoke 12, and the connection surface of the connection position of the concentric corrugated annular disc and the yoke 12 is not higher than the trough of the concentric corrugated annular disc, forming an upward folding structure, which can avoid contact with the magnetic circuit system when the vibration system (the cone and the positioning support in the voice coil) is driven to vibrate, compared with the traditional reverse folding structure, thereby reducing the thickness of the product, and the process is better, and the noise problem caused by process operation is avoided; and the concentric corrugated annular disc plays a role in elastic return and stability. The support arm 222 includes a support arm body 2221 connected with the positioning support body 221, and the support arm body 2221 is inclined to the voice coil 23, the support arm body 2221 is provided with a support connecting portion 2222 fixedly connected with the cone 21, a gap 2225 is provided between the support connecting portion 2222 and the top end of the magnetic conducting bowl 31, and the size of the gap 2225 is not less than the maximum displacement during the operation of the loudspeaker, the distance of the gap 2225 is adjusted according to the size of the specific product, so as to avoid interference between the support arm 222 and the magnetic conducting bowl 31 during the operation of the loudspeaker; for a flat bass loudspeaker, it will help to set a larger magnet system inside and provide more space for deviation to improve performance. The support connecting portion 2222 is provided with a voice coil connecting portion 2223 fixedly connected with the voice coil 23, the voice coil connecting portion 2223 is inclined at an angle to form a triangular groove 2224 between the voice coil 23, and the groove 2224 can accommodate glue, so that the cone 21, the voice coil 23 and the positioning support 22 are firmly bonded.

[0038] The support connecting portion 2222 of the cone 21 and the positioning support 22 are connected to avoid the magnetic conducting bowl 31 in the magnetic circuit system 3, compared with the traditional loudspeaker, not only the vibration space of the positioning support 22 is eliminated, the total height of the product is reduced, but also the vibration system 2 amplitude space is appropriately increased, and the reliability is improved.

[0039] The concentric corrugated annular disc is closely attached to the support arm 222, and the concentric corrugated annular disc and the support arm 222 can be the same material or different materials, which is determined according to the actual strength requirement.

[0040] The cone 21 includes a concave portion 211 with a central concave structure. The concave portion 211 has an upwardly protruding portion 212, the inner side of which is connected to the support connection portion 2222. The protruding portion 212 serves a positioning function, allowing for quick placement of the positioning support piece in subsequent processes and increasing the bonding area with the positioning support piece. The protruding portion 212 also has a voice coil connection portion 213 with an annular protrusion structure connected to the voice coil. The height of the annular protrusion is 0.2-2mm, depending on the product size and power handling requirements. This increases the contact area with the voice coil 23, improving reliability and power handling capacity. This interconnects the cone 21, the positioning support piece 22, and the voice coil 23, forming a stable triangular structure and enhancing the product's power handling capacity.

[0041] The bottom of the basin frame 12 is provided with a through hole 121; when assembling the positioning support piece 22, the process support fixture passes through this hole to support the positioning support piece 22, ensuring that the positioning support piece 22 is assembled in the correct position; and it can also increase the heat dissipation function of the product and improve the product's power resistance and environmental resistance.

[0042] This new design can incorporate back-to-back SPK and SPK box designs, which reduce the vibration of the enclosure to the external mounting system by canceling out back-to-back vibrations.

[0043] The support arm 222 forms a conical damping structure, which is significantly different in structure and shape from traditional speakers. This not only improves acoustic performance but also reduces the overall height of the speaker, resulting in a thinner profile and smaller volume, thus enhancing product competitiveness. Example

[0044] As attached Figure 8 As shown, the structure is the same as that in Embodiment 1, except that the positioning support plate 22 is also provided with a signal conduction lead 24. The signal conduction lead 24 is a nylon wire, which is attached to the concentric corrugated annular disc and the support arm 222 to prevent the nylon wire from contacting the cone or positioning support plate during the operation of the speaker. The conduction lead 24 can be designed by drilling holes and riveting the upward folding part of the positioning support plate 22. This structure is not only more novel and beautiful in appearance, but also improves product reliability and avoids collision noise such as wire breakage because there is no vibration space.

[0045] Meanwhile, the hidden wiring design of the voice coil 23 avoids collisions with the cone 21 or other parts during lead wire vibration compared to traditional wiring methods. The signal conduction lead on the positioning support 22 is connected to the lead wire on the voice coil 23 to conduct audio signals.

[0046] The above merely describes preferred embodiments of the present application and is not intended to limit the present application, and any modification, equivalent replacement, and improvement within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A loudspeaker comprising a basket, a vibration system and a magnetic circuit system provided on the basket, the vibration system comprising a cone provided on the basket, a spider, and a voice coil provided on the cone and the spider, characterized in that: The positioning support piece comprises a positioning support piece body, the inner side of which is provided with a support arm upwardly; the outer side of the positioning support piece body is fixedly connected with the yoke, and the positioning support piece body is located above the position connected with the yoke; the free end of the support arm is fixedly connected with the voice coil.

2. A horn according to claim 1, wherein: The support arm comprises a support arm body connected with the positioning support piece body, and the support arm body is inclined to the voice coil, the support arm body is provided with a support connecting portion fixedly connected with the cone, and the support connecting portion is provided with a voice coil connecting portion fixedly connected with the voice coil.

3. A horn according to claim 2, wherein: The magnetic circuit system comprises a magnetic conducting bowl arranged on the yoke, the magnetic conducting bowl is provided with a magnetic steel, and the magnetic steel is provided with a magnetic conducting sheet.

4. A horn according to claim 3, wherein: The gap between the support connecting portion and the top end of the magnetic conducting bowl is not less than the maximum displacement of the loudspeaker during operation.

5. A horn according to claim 2, wherein: The cone comprises a concave portion with a concave structure in the center, the concave portion is provided with a protruding portion protruding upwardly, and the inner side of the protruding portion is connected with the support connecting portion.

6. A horn according to claim 5, wherein: The protruding portion is further provided with a voice coil connecting portion connected with the voice coil.

7. A horn according to claim 1, wherein: The positioning support piece body is a concentric corrugated ring-shaped disc, the concentric corrugated ring-shaped disc is folded upwardly from the position connected with the yoke, and the connecting surface of the concentric corrugated ring-shaped disc at the position connected with the yoke is not higher than the wave trough of the concentric corrugated ring-shaped disc.

8. A horn according to claim 2, wherein: The voice coil connecting portion and the voice coil are provided with a recess.

9. A horn according to claim 1, wherein: The positioning support piece is further provided with a signal conducting lead, and the signal conducting lead is attached along the positioning support piece body and the support arm.

10. A horn according to claim 1, wherein: The bottom of the yoke is provided with a through hole.

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