Dual-diaphragm unit earphone speaker

Abstract

The utility model discloses a double vibration diaphragm unit earphone loudspeaker, including, support, be located on the magnetic circuit system of support, and, first vibration diaphragm unit and second vibration diaphragm unit are located on the both ends of support back to, wherein, the first sound channel is penetrated to the magnetic circuit system, the first vibration diaphragm unit rear cavity is communicated with second vibration diaphragm front cavity through first sound channel, the second sound channel is seted up on the support, and the second vibration diaphragm rear cavity is communicated with first vibration diaphragm unit front cavity through second magnetic gap and second sound channel, this structure design, can make the size of first vibration diaphragm unit and second vibration diaphragm unit be almost big, so that two vibration diaphragm unit performance can cover low, middle, high full frequency band, and the whole frequency band performance can be superimposed, thereby improving the tone quality. Also, first vibration diaphragm unit and second vibration diaphragm unit share a magnetic circuit system, compared with the traditional reduction is a magnetic circuit system, thereby can reduce product height and reduce product weight.

Description

Technical Field

[0001] This utility model relates to the field of loudspeakers, and in particular to a dual-diaphragm unit headphone loudspeaker. Background Technology

[0002] Currently, speakers, as an important component of mobile terminals with voice playback capabilities, have been widely used.

[0003] like Figure 1 As shown, this is a traditional dual-diaphragm unit loudspeaker. This type of loudspeaker includes a first diaphragm unit 10' and a second diaphragm unit 20'. The two diaphragm units are simply stacked on a bracket and do not share parts, resulting in a relatively high overall height and weight of the loudspeaker. In addition, the cavity is also independent, which slightly lacks in sound quality. Utility Model Content

[0004] In view of this, the present invention addresses the deficiencies of the existing technology, and its main purpose is to provide a dual-diaphragm unit headphone speaker, which solves the problem of slightly lacking sound quality.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: a dual-diaphragm unit headphone speaker, comprising,

[0006] A support, a magnetic circuit system disposed on the support, the magnetic circuit system including a first magnetic gap and a second magnetic gap with openings facing opposite directions; and,

[0007] The first diaphragm unit and the second diaphragm unit are located opposite to each other at both ends of the bracket. The first diaphragm unit is set with a first magnetic gap and the second diaphragm unit is set with a second magnetic gap.

[0008] The magnetic circuit system has a first channel running through it, and the rear cavity of the first diaphragm unit is connected to the front cavity of the second diaphragm through the channel; the bracket has a second channel, and the rear cavity of the second diaphragm is connected to the front cavity of the first diaphragm unit through a second magnetic gap and the second channel.

[0009] In one embodiment, the magnetic circuit system includes a magnetic bowl, a central magnet, a central magnetic conductive sheet, a side magnet, and a side magnetic conductive sheet; the magnetic bowl includes a bowl-shaped portion;

[0010] The intermediate magnet is located in the middle of the inner cavity of the bowl-shaped part, and the intermediate magnetic sheet is located on the upper surface of the intermediate magnet. A first magnetic gap is formed between the outer wall of the intermediate magnet and the intermediate magnetic sheet and the inner wall of the bowl-shaped part, and the first sound channel is penetrated through the upper and lower surfaces of the bowl-shaped part, the intermediate magnet and the intermediate magnetic sheet; the side magnets are spaced apart on the outer side of the bowl-shaped part, and the side magnetic sheet is located on the bottom surface of the side magnet. A second magnetic gap is formed between the inner wall of the side magnet and the side magnetic sheet and the outer wall of the bowl-shaped part, and the second magnetic gap is connected to the second sound channel.

[0011] In one embodiment, the bowl-shaped portion extends horizontally to form a skirt, which has a notch. The second channel is arranged vertically on the bracket, with one end of the notch connected to the second magnetic gap and the other end connected to the second channel.

[0012] In one embodiment, the bracket includes an upper bracket, a lower bracket connected to the upper bracket, and a middle bracket sandwiched between the upper bracket and the lower bracket; the upper inner wall of the upper bracket is provided with an annular limiting part protruding inward, and the upper end of the second channel passes through the annular limiting part; the inner wall of the lower bracket is provided with a mounting groove, and the side magnetic sheet is installed in the mounting groove; the skirt is sandwiched between the upper surface of the side magnet and the bottom surface of the middle bracket.

[0013] In one embodiment, a protective cover is further included within the upper support, the lower end of which is mounted on the top surface of the middle support, and the upper end of which is attached to the inner wall of the upper support, with the first diaphragm unit located within the protective cover.

[0014] In one embodiment, the bottom surface of the bowl-shaped portion has a protruding boss, the first sound channel passes through the boss, the second diaphragm unit is connected to the boss, and a dustproof net is provided at the position of the boss.

[0015] Compared with the prior art, this utility model has obvious advantages and beneficial effects. Specifically, as can be seen from the above technical solution:

[0016] By incorporating a first channel through the magnetic circuit system, connecting the rear cavity of the first diaphragm unit to the front cavity of the second diaphragm unit, and a second channel on the bracket connecting the rear cavity of the second diaphragm unit to the front cavity of the first diaphragm unit, both diaphragm units can cover the entire low, mid, and high frequency range. The performance across the entire frequency range can be superimposed, effectively improving sound quality. Furthermore, the first and second diaphragm units share a single magnetic circuit system, reducing one magnetic circuit system compared to traditional methods, thus allowing for a reduction in product height and weight.

[0017] To more clearly illustrate the structural features and effects of this utility model, the following detailed description of this utility model is provided in conjunction with the accompanying drawings and specific embodiments. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of a conventional dual-unit diaphragm loudspeaker;

[0019] Figure 2 This is a perspective view of the loudspeaker of this utility model;

[0020] Figure 3 This is an exploded view of the loudspeaker of this utility model;

[0021] Figure 4 This is a cross-sectional view of the loudspeaker of this utility model.

[0022] Figure label:

[0023] 10. Bracket 11. Upper Bracket

[0024] 12. Lower support; 13. Middle support

[0025] 111. Annular limiting part; 121. Mounting groove

[0026] 101. Second Channel

[0027] 20. Magnetic circuit system 21. Magnetic bowl

[0028] 22. Intermediate magnet 23. Intermediate magnetic conductive sheet

[0029] 24. Edge magnet 25. Edge magnetic sheet

[0030] 211, Bowl-shaped part 201, First magnetic gap

[0031] 202, Second magnetic gap; 203, First audio channel

[0032] 212. Skirt hem 213. Notch

[0033] 214. Bossed section

[0034] 30. First diaphragm unit; 31. First voice coil

[0035] 40. Second diaphragm unit; 41. Second voice coil

[0036] 50. Protective cover; 60. Dustproof net. Detailed Implementation

[0037] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0038] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0039] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0040] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0041] Please see Figures 2 to 4 As shown, this application provides a dual-diaphragm unit headphone speaker, including a bracket 10, a magnetic circuit system 20 disposed on the bracket 10, the magnetic circuit system 20 having a first magnetic gap 201 and a second magnetic gap 202 with openings facing away from each other; and a first diaphragm unit 30 and a second diaphragm unit 40 disposed facing away from each other at both ends of the bracket 10. Exemplarily, the edges of the diaphragms in the first diaphragm unit 30 and the second diaphragm unit 40 are fixed to the bracket by an annular mounting ring. The first diaphragm unit 30 is disposed corresponding to the first magnetic gap 201, and the second diaphragm unit 40 is disposed corresponding to the second magnetic gap 202.

[0042] For example, the first voice coil 31 in the first diaphragm unit 30 moves up and down in the first magnetic gap 201; the second voice coil 41 in the second diaphragm unit 40 moves up and down in the second magnetic gap 202.

[0043] The magnetic circuit system 20 includes a first channel 203, through which the rear cavity 301 of the first diaphragm unit is connected to the front cavity 401 of the second diaphragm unit via the first channel 203. A second channel 101 is provided on the support 10, and the rear cavity 402 of the second diaphragm unit is connected to the front cavity 302 of the first diaphragm unit via a second magnetic gap 202 and the second channel 101. By having a first channel running through the magnetic circuit system, connecting the rear cavity of the first diaphragm unit to the front cavity of the second diaphragm unit, and by providing a second channel on the support, connecting the rear cavity of the second diaphragm unit to the front cavity of the first diaphragm unit, both diaphragm units can cover the low, mid, and high frequency ranges, and their performance across the entire frequency range can be superimposed, thereby improving sound quality. Furthermore, the first and second diaphragm units share a single magnetic circuit system, reducing one magnetic circuit system compared to traditional methods, thus allowing for a reduction in product height and weight.

[0044] For example, the first channel 203 and the second channel 101 can be in the form of a round hole, a square hole, or a strip hole.

[0045] Unlike traditional dual-diaphragm loudspeakers, the diameter of the second diaphragm unit (diaphragm diameter) is much larger than that of the first diaphragm unit. Traditionally, the first diaphragm unit can only handle the mid-high frequency range, only superimposing the mid-high frequency performance, not the bass. This structural design allows the first and second diaphragm units to be made approximately the same size. Specifically, in this application, the diameter of the diaphragm in the first diaphragm unit 30 is slightly smaller than the diameter of the diaphragm in the second diaphragm unit 40. Since their diameters are roughly the same, both diaphragm units can cover the entire low, mid, and high frequency range, and their performance across the entire frequency range can be superimposed, thereby improving sound quality.

[0046] The magnetic circuit system 20 includes a magnetic bowl 21, a central magnet 22, a central magnetic guide sheet 23, a side magnet 24, and a side magnetic guide sheet 25. The magnetic bowl 21 includes a bowl-shaped portion 211. The central magnet 22 is located in the middle of the inner cavity of the bowl-shaped portion 211, and the central magnetic guide sheet 23 is located on the upper surface of the central magnet 22. A first magnetic gap 201 is formed between the outer walls of the central magnet 22 and the central magnetic guide sheet 23 and the inner wall of the bowl-shaped portion 211. The first sound channel 203 is penetrated through the upper and lower surfaces of the bowl-shaped portion 211, the central magnet 22, and the central magnetic guide sheet 23. The side magnets 24 are spaced apart on the outer side of the bowl-shaped portion 211, and the side magnetic guide sheets 25 are located on the bottom surface of the side magnets 24. A second magnetic gap 202 is formed between the inner walls of the side magnets 24 and the side magnetic guide sheets 25 and the outer wall of the bowl-shaped portion 211. The second magnetic gap 202 communicates with the second sound channel 101.

[0047] The first diaphragm unit 30 and the second diaphragm unit 40 of this application share a magnetic bowl 21. Compared with the traditional method of one magnetic bowl for one diaphragm unit, this application eliminates one magnetic bowl, which further reduces the height and weight of the product.

[0048] The bowl-shaped portion 211 extends horizontally from its opening edge to form a skirt portion 212. The skirt portion 212 serves a positioning and mounting function, allowing the bowl-shaped portion 211 to suspend inside the bracket 10, thus providing more space for assembling other components. A notch 213 is provided on the skirt portion 212. The second audio channel 101 is arranged vertically in the bracket 10. One end of the notch 213 connects to the second magnetic gap 202, and the other end connects to the second audio channel 101.

[0049] The bracket 10 includes an upper bracket 11, a lower bracket 12 connected to the upper bracket 11, and a middle bracket 13 sandwiched between the upper bracket 11 and the lower bracket 12. The structure using multiple brackets facilitates the installation of different components. The upper inner wall of the upper bracket 11 has an inwardly protruding annular limiting part 111, through which the upper end of the second audio channel 101 passes. The annular limiting part 111 serves to limit the installation of the protective cover. The inner wall of the lower bracket 12 has a recessed mounting groove 121, in which the side magnetic sheet 25 is installed, followed by the side magnet 24 and the skirt portion. The skirt portion 212 is sandwiched between the upper surface of the side magnet 24 and the bottom surface of the middle bracket 13.

[0050] This application also includes a protective cover 50 located inside the upper support 11. The lower end of the protective cover 50 is mounted on the top surface of the middle support 13, and the upper end of the protective cover 50 is attached to the inner wall of the upper support 11. The first diaphragm unit 30 is located inside the protective cover 50, and the protective cover 50 is used to protect the first diaphragm unit.

[0051] The bottom surface of the bowl-shaped portion 211 has a protruding boss 214. The first sound channel 203 passes through the boss 214. The second diaphragm unit 40 is connected to the boss 214. The boss 214 allows the second diaphragm unit 40 to be installed more stably. A dustproof net 60 is provided at the position of the boss 214 to prevent dust from entering the first sound channel 203.

[0052] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A dual-diaphragm unit headphone speaker, characterized in that: include, A support, and a magnetic circuit system disposed on the support, the magnetic circuit system having a first magnetic gap and a second magnetic gap with openings facing away from each other; as well as, The first diaphragm unit and the second diaphragm unit are located opposite to each other at both ends of the bracket. The first diaphragm unit is set with a first magnetic gap and the second diaphragm unit is set with a second magnetic gap. The magnetic circuit system has a first channel running through it, and the rear cavity of the first diaphragm unit is connected to the front cavity of the second diaphragm unit through the first channel; the bracket has a second channel, and the rear cavity of the second diaphragm unit is connected to the front cavity of the first diaphragm unit through a second magnetic gap and the second channel.

2. The dual-diaphragm unit headphone speaker according to claim 1, characterized in that: The magnetic circuit system includes a magnetic bowl, a central magnet, a central magnetic conductive sheet, a side magnet, and a side magnetic conductive sheet; the magnetic bowl includes a bowl-shaped portion. The intermediate magnet is located in the middle of the inner cavity of the bowl-shaped part, and the intermediate magnetic sheet is located on the upper surface of the intermediate magnet. A first magnetic gap is formed between the outer wall of the intermediate magnet and the intermediate magnetic sheet and the inner wall of the bowl-shaped part, and the first sound channel is penetrated through the upper and lower surfaces of the bowl-shaped part, the intermediate magnet and the intermediate magnetic sheet; the side magnets are spaced apart on the outer side of the bowl-shaped part, and the side magnetic sheet is located on the bottom surface of the side magnet. A second magnetic gap is formed between the inner wall of the side magnet and the side magnetic sheet and the outer wall of the bowl-shaped part, and the second magnetic gap is connected to the second sound channel.

3. The dual-diaphragm unit headphone speaker according to claim 2, characterized in that: The bowl-shaped part has a horizontally extending skirt-like portion on its open side edge. The skirt-like portion has a notch. The second channel is arranged vertically on the bracket. One end of the notch is connected to the second magnetic gap, and the other end is connected to the second channel.

4. The dual-diaphragm unit headphone speaker according to claim 3, characterized in that: The bracket includes an upper bracket, a lower bracket connected to the upper bracket, and a middle bracket sandwiched between the upper bracket and the lower bracket; the upper inner wall of the upper bracket is provided with an annular limiting part protruding inward, and the upper end of the second channel passes through the annular limiting part; the inner wall of the lower bracket is provided with a mounting groove, and the side magnetic sheet is installed in the mounting groove; the skirt is sandwiched between the upper surface of the side magnet and the bottom surface of the middle bracket.

5. The dual-diaphragm unit headphone speaker according to claim 4, characterized in that: It also includes a protective cover located inside the upper support, the lower end of which is mounted on the top surface of the middle support, and the upper end of which is attached to the inner wall of the upper support. The first diaphragm unit is located inside the protective cover.

6. The dual-diaphragm unit headphone speaker according to claim 2, characterized in that: The bottom surface of the bowl-shaped part has a protruding boss, the first sound channel passes through the boss, the second diaphragm unit is connected to the boss, and a dustproof net is provided at the position of the boss.

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