Loudspeaker and electronic equipment

Abstract

The utility model belongs to the technical field of electro-acoustic conversion, and particularly relates to a loudspeaker and electronic equipment, the loudspeaker comprises a housing, a vibration system and a magnetic circuit system, the vibration system and the magnetic circuit system are accommodated in the housing, the magnetic circuit system comprises a support plate, a first magnetic part and a second magnetic part, the first magnetic part and the second magnetic part are arranged on the support plate, and a magnetic gap is formed between the first magnetic part and the second magnetic part; the vibration system comprises a vibrating diaphragm, a centering disk and a voice coil, the vibrating diaphragm and the centering disk are both connected to the shell, the vibrating diaphragm is arranged on one side, away from the magnetic circuit system, of the shell, the voice coil is located in the magnetic gap, the central axis of the voice coil is perpendicular to the vibration direction of the vibrating diaphragm, and the two opposite sides, in the vibration direction, of the voice coil are connected with the vibrating diaphragm and the centering disk in an adhesive mode respectively. In the structure, the two opposite ends of the voice coil in the vibration system are directly connected with the vibrating diaphragm and the centering disk through the adhesive instead of being connected with the vibrating diaphragm and the centering disk through the voice coil bracket, so that the mass of the vibration system can be further reduced, and the sensitivity of the vibration system is improved.

Description

Technical Field

[0001] This utility model belongs to the field of electroacoustic conversion technology, and specifically relates to a loudspeaker and electronic device. Background Technology

[0002] In related technologies, the vibration of a planar voice coil loudspeaker typically includes a diaphragm, a planar voice coil, and a voice coil support. The voice coil support has an annular hole that fits the planar voice coil, and the planar voice coil is connected to the inner wall of the annular hole and to the diaphragm through the voice coil support. However, the additional voice coil support increases the weight of the vibration system, thereby affecting the sensitivity of the vibration system and limiting the improvement of the loudspeaker's sound quality.

[0003] Therefore, in view of the above shortcomings, this utility model is proposed. Utility Model Content

[0004] The purpose of this invention is to provide a loudspeaker and electronic device to solve the problem of poor sensitivity of the vibration system caused by the setting of a voice coil support in the prior art.

[0005] The first aspect of this utility model provides a loudspeaker, including a housing and a vibration system and a magnetic circuit system housed within the housing. The magnetic circuit system includes a support plate and a first magnetic part and a second magnetic part disposed on the support plate, with a magnetic gap formed between the first magnetic part and the second magnetic part.

[0006] The vibration system includes a diaphragm, a centering support, and a voice coil. The diaphragm and the centering support are both connected to the housing. The diaphragm is located on the side of the housing away from the magnetic circuit system. The voice coil is located in the magnetic gap, and the central axis of the voice coil is perpendicular to the vibration direction of the diaphragm. The voice coil is bonded to the diaphragm and the centering support on opposite sides along the vibration direction, respectively.

[0007] The loudspeaker provided by this utility model may also have the following additional technical features:

[0008] In one specific embodiment of this utility model, the centering support includes a first connecting part, a second connecting part, and a vibrating arm connected between the first connecting part and the second connecting part. The first connecting part is connected to the outer shell, and the second connecting part has a notch. The voice coil is disposed at the notch, and the side of the voice coil is connected to the second connecting part.

[0009] In one specific embodiment of this utility model, the vibrating arm is U-shaped, and the first connecting part and the second connecting part are respectively connected to the same side of the two open ends of the vibrating arm.

[0010] In one specific embodiment of this utility model, the number of centering supports is two, and the two centering supports are arranged at both ends of the voice coil along the long side of the voice coil and are centrally symmetrical.

[0011] In one specific embodiment of this utility model, the centering support is bonded to the voice coil by an adhesive. After the adhesive cures, it simultaneously connects the side of the voice coil and the surface of the centering support facing the diaphragm.

[0012] In one specific embodiment of this utility model, the first connecting part is provided with a first spot welding pad for connecting an external power supply, and the second connecting part is provided with a second spot welding pad for connecting the lead wire of the voice coil. The first spot welding pad and the second spot welding pad are electrically connected, and the adhesive simultaneously bonds the lead wire and the centering support after curing.

[0013] And / or, the side surface includes two surfaces parallel to the vibration direction and an outer side surface connecting the two surfaces, and the adhesive, after curing, simultaneously connects the two surfaces, the outer side surface, and the surface of the centering support plate facing the diaphragm.

[0014] In one specific embodiment of this utility model, the diaphragm includes a folded ring connected to the housing and a vibrating plate disposed in the central region of the folded ring. The vibrating plate has a connecting portion protruding toward the voice coil, and the connecting portion is connected to the voice coil.

[0015] In one specific embodiment of this utility model, the support plate is made of a magnetically conductive material, and both the first magnetic part and the second magnetic part include a first magnet, a magnetically conductive plate, and a second magnet stacked on the support plate.

[0016] In one specific embodiment of this utility model, both ends of the support plate are provided with clearance portions; the speaker also includes a circuit board, which is connected to the side of the support plate away from the first magnet, and both ends are respectively provided corresponding to the clearance portions and are respectively adapted to be electrically connected to the two centering support pieces.

[0017] A second aspect of this invention also provides an electronic device, including the speaker described in any one of the above.

[0018] The loudspeaker provided in this embodiment of the invention features a housing and a magnetic circuit system and a vibration system housed within the housing. The magnetic circuit system drives the vibration system to produce sound. Furthermore, because the voice coil in the vibration system is directly connected to the diaphragm and centering support at opposite ends, rather than through a voice coil support, the mass of the vibration system can be further reduced, thereby increasing its sensitivity. Attached Figure Description

[0019] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 This is a partial structural schematic diagram of the vibration system in an embodiment of this utility model;

[0021] Figure 2 for Figure 1 Exploded view;

[0022] Figure 3 This is an exploded view of the speaker structure in this utility model;

[0023] Figure 4 This is a cross-sectional structural diagram of the loudspeaker of this utility model.

[0024] Explanation of reference numerals in the attached figures:

[0025] 100-speaker;

[0026] 10-Shell, 11-First side, 12-Corner;

[0027] 20-Vibration system, 21-Diaphragm, 22-Voice coil, 23-Centering support, 231-First connecting part, 232-Second connecting part, 233-Vibrating arm, 234-Notch, 236-First spot welding pad, 235-Second spot welding pad, 24-Adhesive;

[0028] 30-Magnetic circuit system, 31-Support plate, 32-First magnetic part, 33-Second magnetic part, 34-First magnet, 35-Second magnet, 36-Magnetic guide plate, 37-Allowing part;

[0029] 40 - Circuit board. Detailed Implementation

[0030] Exemplary embodiments of the present invention will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this invention will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

[0031] It should be understood that the terminology used herein is for the purpose of describing particular exemplary embodiments only and is not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms “a,” “an,” and “described” as used herein may also include the plural forms. The terms “comprising,” “including,” “containing,” and “having” are inclusive and therefore indicate the presence of the stated features, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein are not construed as requiring them to be performed in a particular order described or illustrated unless the order of performance is explicitly indicated. It should also be understood that additional or alternative steps may be used.

[0032] Although terms such as first, second, third, etc., may be used in this document to describe multiple elements, components, regions, layers, and / or segments, these elements, components, regions, layers, and / or segments should not be limited by these terms. These terms may be used only to distinguish one element, component, region, layer, or segment from another. Unless the context clearly indicates otherwise, terms such as "first," "second," and other numerical terms used herein do not imply order or sequence. Therefore, the first element, component, region, layer, or segment discussed below may be referred to as the second element, component, region, layer, or segment without departing from the teachings of the exemplary embodiments.

[0033] For ease of description, spatial relative terms may be used in the text to describe the relationship of one element or feature relative to another element or feature, as shown in the figure. These relative terms include, for example, "inside," "outside," "middle," "outer," "below," "below," "above," "over," etc. Such spatial relative terms are intended to include different orientations of the device in use or operation, other than those depicted in the figure. For example, if the device in the figure is flipped, an element described as "below other elements or features" or "below other elements or features" would subsequently be oriented as "above other elements or features" or "above other elements or features." Therefore, the example term "below" can include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions), and the spatial relative descriptors used in the text will be interpreted accordingly.

[0034] Reference Figure 1-4The first aspect of this utility model provides a loudspeaker 100, which includes a housing and a vibration system 20 and a magnetic circuit system 30 housed within the housing. The magnetic circuit system 30 includes a support plate and a first magnetic part and a second magnetic part disposed on the support plate, with a magnetic gap formed between the first magnetic part and the second magnetic part. The vibration system 20 includes a diaphragm 21, a centering support 23, and a voice coil 22. The diaphragm 21 and the centering support 23 are both connected to the housing. The diaphragm is disposed on the side of the housing away from the magnetic circuit system. The voice coil is located in the magnetic gap, and the central axis of the voice coil 22 is perpendicular to the diaphragm 21 and the centering support 23. The opposite sides of the voice coil 22 are respectively bonded to the diaphragm 21 and the centering support 23.

[0035] Specifically, the outer shell is formed as a hollow rectangular frame structure, with its length as the major axis, its width as the minor axis, and its height as the vibration direction of the vibration system 20 in the speaker 100. Along its height direction, the outer shell has a first side 11 and a second side. The vibration system 20 is connected to the first side 11, and the magnetic circuit system 30 is connected to the second side, forming a magnetic gap with a magnetic field, so that the vibration system 20 can be driven to vibrate and produce sound when energized.

[0036] The magnetic circuit system includes a support plate, a first magnetic part, and a second magnetic part. The support plate 31 is connected to the second side of the housing 10. The first magnetic part 32 and the second magnetic part 33 are both strip-shaped and their lengths are slightly less than the length of the voice coil 22. They are arranged side by side on the support plate 31 along the long axis of the housing 10. Thus, a magnetic gap with a magnetic field is formed between the first magnetic part 32 and the second magnetic part 33.

[0037] The vibration system 20 includes a diaphragm 21, a centering support 23, and a voice coil 22. The diaphragm 21 is rectangular and its outer periphery is connected to a first side 11 of the housing. The centering support 23 is connected to a second side of the housing. The voice coil 22 is a flat coil wound with wire. The length of the voice coil 22 is slightly less than the length of the major axis of the housing 10. It is positioned inside the housing with its central axis perpendicular to the vibration direction of the diaphragm 21, specifically within a magnetic gap. The end near the diaphragm 21 is bonded to the diaphragm 21, and the end near the centering support 23 is bonded to the centering support 23. Because the voice coil 22 is inserted into the magnetic gap formed by the magnetic circuit system 30, it can vibrate along the height direction of the housing when energized, thereby driving the diaphragm 21 to vibrate and produce sound. Furthermore, since the two ends of the voice coil 22 along the vibration direction are connected to the diaphragm 21 and the centering support 23 respectively, the polarization of the voice coil 22 in the non-vibration direction can be reduced, thereby improving its sound quality. Furthermore, since the voice coil 22 is directly bonded to the diaphragm 21 and centering support 23 instead of being connected to the diaphragm 21 and / or centering support 23 through the voice coil support, the mass of the vibration system 20 can be further reduced, thereby improving the sensitivity of the vibration system 20.

[0038] The loudspeaker 100 provided in this embodiment of the invention comprises a housing 10 and a magnetic circuit system 30 and a vibration system 20 housed within the housing 10. Thus, the magnetic circuit system 30 drives the vibration system 20 to achieve sound generation by the loudspeaker 100. Furthermore, since the voice coil 22 in the vibration system 20 is directly connected to the diaphragm 21 and centering support 23 via adhesive 24, rather than via a voice coil support, the mass of the vibration system 20 can be further reduced, thereby improving the sensitivity of the vibration system 20.

[0039] In one embodiment, the centering support 23 includes a first connecting portion 231, a second connecting portion 232, and a vibrating arm 233 connected between the first connecting portion 231 and the second connecting portion 232. The first connecting portion 231 is connected to the outer shell, and the second connecting portion 232 is provided with a notch 234. The voice coil 22 is disposed at the notch 234, and the side of the voice coil 22 is connected to the second connecting portion 232.

[0040] In this embodiment, a notch 234 is provided in the second connecting portion 232 of the centering support 23 to define the voice coil 22, and then the second connecting portion 232 and the voice coil 22 are connected by adhesive. This not only improves the positioning accuracy between the centering support 23 and the voice coil 22, but also increases the connection area between the centering support 23 and the voice coil 22, thereby further improving the connection strength between the voice coil 22 and the centering support 23.

[0041] In one embodiment, the connecting end of the long axis and short axis of the outer casing is a corner 12, and the first connecting part 231 is connected to the corner 12 of the outer casing.

[0042] In one embodiment, the vibrating arm 233 is U-shaped, with the first connecting portion 231 and the second connecting portion 232 respectively connected to the same side of the two open ends of the vibrating arm 233. This allows for efficient use of the space within the housing 10 to increase the length of the vibrating arm 233, thereby increasing the maximum vibration between the first connecting portion 231 and the second connecting portion 232, thus ensuring the vibration effect of the voice coil 22.

[0043] In one embodiment, there are two centering supports 23, which are arranged at both ends of the voice coil 22 along the long side of the voice coil 22 and are centrally symmetrical.

[0044] Specifically, the two centering supports 23 are respectively located at the two ends of the first magnetic part 32 and the second magnetic part 33, and are located in the cavity formed by the housing 10, the first magnet 34, and the second magnetic part 33. The two centering supports 23 are arranged in a centrally symmetrical manner after being connected.

[0045] This embodiment ensures the force balance of the voice coil 22 through the above settings, thereby ensuring the vibration stability of the voice coil 22.

[0046] In one embodiment, the centering support 23 is bonded to the voice coil 22 with an adhesive. The adhesive connects both the side surface of the voice coil 22 and the surface of the centering support 23 facing the diaphragm 21. The adhesive is liquid or semi-solid and solidifies to form a solid structure with a specific shape. This arrangement increases the contact area with the voice coil 22, thereby improving the connection strength between the voice coil and the centering support 23.

[0047] In one embodiment, the adhesive is a UV adhesive.

[0048] In one embodiment, the second connecting portion 232 is rectangular, and the adhesive 24 between the centering support 23 and the voice coil 22 is formed into a truncated pyramid. This embodiment further ensures the connection strength between the voice coil 22 and the second connecting portion 232 by forming the adhesive 24 into a truncated pyramid shape, thereby improving the support strength for the voice coil 22.

[0049] In one embodiment, the side surface of the voice coil 22 includes two surfaces parallel to the vibration direction and an outer surface connecting the two surfaces. After the adhesive 24 cures, it simultaneously connects the two surfaces, the outer surface, and the surface of the centering support 23 facing the diaphragm 21. This further increases the reliability of the connection between the voice coil 22 and the centering support 23.

[0050] In one embodiment, the first connecting part 231 is provided with a first spot welding pad 236 for connecting an external power supply, and the second connecting part 232 is provided with a second spot welding pad 235 for connecting the lead wire of the voice coil 22. The first spot welding pad 236 and the second spot welding pad 235 are electrically connected, and the adhesive 24 simultaneously bonds the lead wire of the voice coil 22 and the centering support 23.

[0051] Specifically, one of the first spot solder pads 236 is connected to the input terminal of the external power supply, and the other first spot solder pad 236 is connected to the output terminal of the external power supply. One second spot solder pad 235 is connected to the input terminal of the voice coil 22 lead, and the other second spot solder pad 235 is connected to the output terminal of the voice coil 22 lead. Since the first spot solder pad 236 and the second spot solder pad 235 of the same centering support 23 are electrically connected, the electrical signal can be transmitted from the first spot solder pad 236 to the second spot solder pad 235, the voice coil 22, the second spot solder pad 235, and the first spot solder pad 236 in sequence, and then to the external power supply line. In this way, the electrical signal is supplied to the voice coil 22.

[0052] Furthermore, the adhesive simultaneously bonds the lead wire and the centering support 23, which further enhances the connection strength between the voice coil 22 lead wire and the centering support 23, thereby preventing connection failure between the voice coil and the centering support and improving the reliability of the loudspeaker.

[0053] This embodiment simplifies the internal circuit structure of the loudspeaker 100 through the above-described settings, thereby reducing the interference of the circuitry on the vibration system 20 and the magnetic circuit system 30.

[0054] In one embodiment, the diaphragm 21 includes a folded ring connected to the housing 10 and a diaphragm plate disposed in the central region of the folded ring. The diaphragm plate has a connecting portion protruding toward the voice coil 22, and the connecting portion is connected to the voice coil 22. By providing a connecting portion protruding toward the voice coil 22 on the diaphragm plate, the voice coil 22 can be inserted into the magnetic gap.

[0055] In one embodiment, the support plate is made of a magnetic material, and the first magnetic part 32 and the second magnetic part 33 both include a first magnet 34, a magnetic plate 36 and a second magnet 35 stacked on the support plate 31.

[0056] Specifically, the outer contours of the first magnet 34, the magnetic guide plate 36, and the second magnet 35 are basically the same, and they are bonded and stacked on the support plate 31. In the initial state, the two first magnets 34 of the first magnetic part 32 and the second magnetic part 33 are respectively located on both sides of the long axis of the voice coil 22 near the support plate 31, and realize the driving of the long axis of the corresponding voice coil 22. The two second magnets 35 of the first magnetic part 32 and the second magnetic part 33 are respectively located on both sides of the long axis of the voice coil 22 near the diaphragm 21, and realize the driving of the long axis of the corresponding voice coil 22.

[0057] In one embodiment, the support plate 31 is made of a non-magnetic material. The first magnetic part and the second magnetic part each include a third magnet, a fourth magnet and a fifth magnet stacked sequentially on the support plate 31. The third magnet and the fifth magnet are magnetized perpendicular to the vibration direction and in opposite directions. The fourth magnet is magnetized along the vibration direction and the polarity of the end of the fourth magnet near the third magnet is opposite to the polarity of the end of the third magnet near the magnetic gap. The first magnetic part and the second magnetic part both form a magnetic field enhancement side facing the magnetic gap.

[0058] In one embodiment, both ends of the support plate 31 are provided with clearance portions 37; the speaker 100 also includes a circuit board 40, which is connected to the side of the support plate 31 away from the first magnetic part 32, and both ends are respectively provided corresponding to the clearance portions 37, and are respectively adapted to be electrically connected to the two centering support pieces 23, specifically to be electrically connected to the first spot welding pads 236 of the first connecting portions 231 of the two centering support pieces 23.

[0059] Specifically, the clearance portions 37 at both ends of the support plate 31 are provided corresponding to the corners. The circuit board 40 is connected to the side of the support plate 31 away from the housing 10. Since the length of the circuit board 40 is slightly less than the length of the support plate 31, both ends of the circuit board 40 can correspond to the clearance portions 37, thereby facilitating electrical connection with the first spot solder pad 236 of the first connecting portion 231 connected to the corner of the housing 10. More specifically, the corner portion 12 of the housing 10 is injection molded with an external solder pad, which is electrically connected to the first spot solder pad 236. The end of the circuit board 40 is electrically connected to the first spot solder pad 236 through the external solder pad.

[0060] This embodiment simplifies the wiring setup within the speaker 100 by implementing the above-described configuration, thereby reducing interference from the wiring to the vibration system 20.

[0061] The second aspect of this utility model also provides an electronic device, which includes a speaker 100 as described above. The structure of the speaker 100 is as described in the above embodiments. Since the electronic device in this embodiment includes the speaker 100 in all the above embodiments, it also has at least the beneficial effects of the speaker 100 described above, which will not be described in detail here.

[0062] Electronic devices can be mobile phones, tablets, computers, or wearable devices; there are no restrictions here.

[0063] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A loudspeaker, characterized in that, The system includes a housing and a vibration system and a magnetic circuit system housed within the housing. The magnetic circuit system includes a support plate and a first magnetic part and a second magnetic part disposed on the support plate, with a magnetic gap formed between the first magnetic part and the second magnetic part. The vibration system includes a diaphragm, a centering support, and a voice coil. The diaphragm and the centering support are both connected to the housing. The diaphragm is located on the side of the housing away from the magnetic circuit system. The voice coil is located in the magnetic gap, and the central axis of the voice coil is perpendicular to the vibration direction of the diaphragm. The voice coil is bonded to the diaphragm and the centering support on opposite sides along the vibration direction, respectively.

2. The loudspeaker according to claim 1, characterized in that, The centering support includes a first connecting part, a second connecting part, and a vibrating arm connected between the first connecting part and the second connecting part. The first connecting part is connected to the outer shell. The second connecting part has a notch. The voice coil is located at the notch, and the side of the voice coil is connected to the second connecting part.

3. The loudspeaker according to claim 2, characterized in that, The vibrating arm is U-shaped, and the first connecting part and the second connecting part are respectively connected to the same side of the two open ends of the vibrating arm.

4. The loudspeaker according to claim 3, characterized in that, The number of centering supports is two, and the two centering supports are arranged at both ends of the voice coil along the long side of the voice coil and are centrally symmetrical.

5. The loudspeaker according to claim 2, characterized in that, The centering support is bonded to the voice coil with an adhesive. After the adhesive cures, it connects both the side of the voice coil and the surface of the centering support facing the diaphragm.

6. The loudspeaker according to claim 5, characterized in that, The first connecting part is provided with a first spot welding pad for connecting an external power supply, and the second connecting part is provided with a second spot welding pad for connecting the lead wire of the voice coil. The first spot welding pad and the second spot welding pad are electrically connected. After the adhesive is cured, the lead wire and the centering support are bonded together. And / or, the side surface includes two surfaces parallel to the vibration direction and an outer side surface connecting the two surfaces, and the adhesive, after curing, simultaneously connects the two surfaces, the outer side surface, and the surface of the centering support plate facing the diaphragm.

7. The loudspeaker according to claim 1, characterized in that, The diaphragm includes a folded surround connected to the housing and a diaphragm plate disposed in the central region of the folded surround. The diaphragm plate has a connecting portion protruding toward the voice coil, and the connecting portion is connected to the voice coil.

8. The loudspeaker according to claim 1, characterized in that, The support plate is made of magnetic material, and both the first magnetic part and the second magnetic part include a first magnet, a magnetic plate and a second magnet stacked on the support plate.

9. The loudspeaker according to claim 1, characterized in that, Both ends of the support plate are provided with clearance portions; the speaker also includes a circuit board, which is connected to the side of the support plate away from the first magnet, and its two ends are respectively provided corresponding to the clearance portions, and are respectively adapted to be electrically connected to the two centering support pieces.

10. An electronic device, characterized in that, Includes the loudspeaker as described in any one of claims 1-9.

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