Upside-down speakers and car audio systems

Abstract

The Company provides inverted speakers and car audio systems. [Solution] The inverted speaker includes a basin frame, a sound cone having an outer end and an inner end that are opposite and open, the outer end being covered by the basin frame and the outer end being connected to the basin frame, a voice coil connected to the inner end of the sound cone, and a magnetic circuit system for driving the voice coil to vibrate, the magnetic circuit system being provided on the basin frame, having a magnetic gap, and a part of the voice coil being inserted into the magnetic gap, the inverted speaker further includes a positioning branch slice provided between the basin frame and the sound cone, the outer edge of which is connected to the sound cone. The inverted speaker of the present invention has a low overall height and occupies a small space, and is suitable for use as a door panel speaker.

Description

[Technical field]

[0001] (CROSS REFERENCE TO RELATED ART APPLICATIONS) This application claims priority to a Chinese patent application filed on August 9, 2022, application number CN2022109485500.

[0002] The present invention relates to the field of speakers, and in particular to inverted speakers and car audio systems. [Background technology]

[0003] With the rapid development of electronic technology, providing users with a good driving experience has become an essential element for automobiles, and as one of the three main interactive means in the car (sound, light, and touch), voice is particularly important in improving user experience. Car audio systems usually contain multiple speakers, and currently the shape and structure of the speakers are diverse, and the volume of the speaker combination is large. At the same time, the space for installing speakers in the car is limited, so reducing the height of the speakers (reducing the space occupied by the speakers) is a technical problem that manufacturers need to solve as soon as possible.

[0004] At present, some car audio systems use an inverted speaker, for example, as shown in Fig. 5 and Fig. 6, the positioning branch slice 6' of the inverted speaker is provided outside the magnetic circuit system 5' and the sound cone 2', and the volume is large, and the inverted speaker needs to use two basin frames 1', and leave the dust net 8, the magnetic circuit system 5', the sound cone 2' and the voice coil 4' between the two basin frames 1', and drill holes in the positioning branch slice 6' to align the lead 42' with the positioning branch slice 6', which is relatively expensive. Summary of the Invention [Problem to be solved by the invention]

[0005] SUMMARY OF THE DISCLOSURE In order to solve the above technical problems, the present invention aims to provide an inverted speaker that is suitable for use as a door panel speaker, and has a low overall height, a small space occupancy, and a low cost.

[0006] Another object of the present invention is to provide a car audio system in which the speakers occupy a small space, thereby saving vehicle door panel space. [Means for solving the problem]

[0007] The first aspect of the present invention is A basin frame; a sound cone having opposite open outer and inner ends, the outer end being covered by the basin frame and the outer end being connected to the basin frame; a voice coil connected to the inner end of the sound cone; a magnetic circuit system for driving the voice coil to vibrate, the magnetic circuit system being provided on the basin frame and having a magnetic gap, a portion of the voice coil being inserted into the magnetic gap, The inverted speaker is An inverted speaker is provided, further including a positioning branch slice disposed between the basin frame and the sound cone, the outer edge of which is connected to the sound cone.

[0008] The basin frame is for connecting the sound cone, the positioning branch slice and the magnetic circuit system.

[0009] In some embodiments, the central portion of the positioning branch slice is provided with a bore for exposure to the magnetic gap and an inner edge surrounding the bore, and the inner edge of the positioning branch slice is connected to the basin frame.

[0010] In some embodiments, the magnetic circuit system includes a U-iron, a magnetic steel disposed within the U-iron, and a front panel, the magnetic gap is formed between an inner surface of the U-iron and an outer surface of the magnetic steel and the front panel, and the voice coil is inserted into the magnetic gap after passing through the bore.

[0011] In some embodiments, the basin frame comprises a cylindrical portion covering the outer surface of the U-iron, and an inner edge of the positioning branch slice and the cylindrical portion of the basin frame are fixedly connected.

[0012] Furthermore, the inner edge of the positioning branch slice and the cylindrical portion of the basin frame are bonded together with an adhesive.

[0013] In some embodiments, the sound cone includes a conical body having a truncated cone shape, the inner end being located at a cone top of the conical body, the outer end including a yoke ring connected to a cone bottom of the conical body, the yoke ring being fixedly connected to the basin frame, and the outer edge of the positioning branch slice being fixedly connected to an inner surface of the conical body.

[0014] In some embodiments, the inner end is a voice coil mounting hole provided in the upper portion of the cone, and the voice coil is bonded to a hole wall of the voice coil mounting hole through the voice coil mounting hole.

[0015] In some embodiments, the voice coil includes a lead connection portion that extends from the voice coil mounting hole to the outside of the sound cone, and one end of a lead of the voice coil is connected to the lead connection portion.

[0016] In some embodiments, the basin frame is provided with a terminal, the terminal including a solder lug embedded in the basin frame, and the other end of the lead is conductively connected to the solder lug.

[0017] In some embodiments, the outer edge of the positioning branch slice and the inner surface of the cone-shaped body are bonded together with an adhesive.

[0018] In some embodiments, a portion of the voice coil protrudes outside the sound cone, and the inverted speaker further includes a dust cap for covering the portion of the voice coil protruding outside the sound cone.

[0019] Further, in some embodiments, the basin frame includes a main body portion and a skirt portion that folds and extends from the outer edge of the main body portion, the sound cone is located within a space surrounded by the main body portion and the skirt portion, and the main body portion is provided with a plurality of hollow portions for sound transmission.

[0020] The main body further includes the above-mentioned cylindrical body and a plurality of connecting ribs. The plurality of connectors are spaced apart in the circumferential direction of the cylindrical body, and each connecting rib extends outward in the radial direction of the cylindrical body. Each connecting portion is gradually inclined upward from the inside to the outside, and the above-mentioned hollow portion is formed between adjacent connecting ribs.

[0021] In addition, most of the voice coil is also located in the space, so the basin frame can provide good protection for the internal components such as the sound cone and the voice coil.

[0022] Furthermore, a terminal is provided at the bottom, and the voice coil lead has an inner end connected to the voice coil and an outer end connected to the terminal, which makes wiring of the voice coil lead convenient, and assembly is convenient, and there is no need to bend the lead multiple times, which avoids damage to the lead.

[0023] Furthermore, the leads may be provided independently of the positioning branch slice, i.e., there is no need to provide lead through holes in the positioning branch slice, which simplifies assembly and thereby greatly reduces production costs.

[0024] In some embodiments, the voice coil is provided with a plurality of through holes, the through holes being spaced apart in a circumferential direction of the voice coil for heat dissipation.

[0025] A second aspect of the present invention provides a car audio system including the above-mentioned inverted speaker.

[0026] In some embodiments, the inverted speaker is mounted in a door panel of a vehicle. Effect of the Invention

[0027] With the above solution, the present invention has the following advantages over the prior art:

[0028] In the inverted installation speaker of the present invention, a positioning branch slice is provided between the sound cone and the basin frame, and the outer edge of the positioning branch slice is connected to the sound cone, forming a structure in which the positioning branch slice is in the center of the sound cone and the magnetic circuit system, thereby reducing the overall height of the speaker and better meeting the structural installation requirements in a flat and narrow space, while saving the space of the vehicle door panel, and only one basin frame needs to be used. The positioning branch slice, sound cone and magnetic circuit system not only have the function of positioning the voice coil, but also can block the intrusion of dust and dirt into the magnetic gap, thereby achieving a dustproof effect, and eliminating the need to use a dust net.

[0029] In order to more clearly describe the technical solutions of the present invention, the following briefly introduces the necessary drawings used in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention, and those skilled in the art can obtain other drawings based on these drawings without the need for creative work. [Brief description of the drawings]

[0030] [Figure 1]FIG. 1 is an exploded schematic view of an inverted speaker according to an embodiment of the present invention. [Diagram 2] FIG. 2 is a plan view of the inverted speaker according to the embodiment of the present invention. [Diagram 3] FIG. 3 is a cross-sectional view taken along line A, A in FIG. [Figure 4] FIG. 4 is a locally enlarged view of B in FIG. [Diagram 5] FIG. 5 is an exploded schematic diagram of another inverted speaker. [Figure 6] FIG. 6 is a cross-sectional view of another inverted speaker. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0031] In order to facilitate understanding of the advantages and features of the present invention by those skilled in the art, preferred embodiments of the present invention will be described in detail below with reference to the drawings. The description of these embodiments contributes to the understanding of the present invention, but does not constitute a limitation on the present invention. In addition, the technical features according to the various embodiments of the present invention described below can be combined with each other as long as they are not inconsistent with each other.

[0032] In this embodiment, an inverted speaker is provided. As shown in Figures 1 to 3, the inverted speaker includes a basin frame 1, a sound cone 2, a voice coil 4, a magnetic circuit system 5 and a positioning branch slice 6. The basin frame 1 is bonded to the sound cone 2, and is for fixing the sound cone 2, the magnetic circuit system 5 and the positioning branch slice 6. In a plan view, the inverted speaker has a circular shape as a whole.

[0033] Furthermore, as shown in FIG. 3, the sound cone 2 has an outer end (specifically, the upper end in FIG. 3) and an inner end 22 (specifically, the lower end in FIG. 3) that are opposed and open, the outer end 21 is bonded to the basin frame 1, the inner end 22 is bonded to the voice coil 4, the outer end 21 of the sound cone 2 is covered by the basin frame 1, the voice coil 4 is bonded to the inner end 22 of the sound cone 2, the magnetic circuit system 5 drives the voice coil 4 to vibrate, the magnetic circuit system 5 is provided on the basin frame 1, and the magnetic circuit system The frame 5 has a magnetic gap 51, a part of the voice coil 4 is inserted into the magnetic gap 51, the positioning branch slice 6 is provided between the basin frame 1 and the sound cone 2, the outer edge 61 of the positioning branch slice 6 is connected to the sound cone 2, more specifically, the sound cone 2 includes a cone-shaped body 23 that presents a truncated cone, and the outer edge 61 of the positioning branch slice 6 is bonded to the middle of the cone-shaped body 23, so that the overall height of the speaker is reduced, the space it occupies is reduced, and it is more suitable for the structural installation requirements of a flat and narrow space. Here, the position terms "inside" and "outside" are defined based on the center line of the speaker body (preferably coincident with the center lines of the cone 2 and the voice coil 3), and the side closer to this center line is the inside, and the opposite is the outside.

[0034] As shown in FIG. 1 and FIG. 4, the center of the positioning branch slice 6 is provided with a bore 62 for exposure to the magnetic gap 51 and an inner edge 63 surrounding the bore 62, and the inner edge 63 of the positioning branch slice 6 is connected to the basin frame 1. Specifically, the magnetic circuit system 5 includes a magnetic conductive U-iron 52, a magnetic steel 53 provided in the U-iron 52, and a front panel 54, the magnetic gap 51 is formed between the inner surface of the U-iron 52 and the outer surface of the magnetic steel 53 and the front panel 54, and the voice coil 4 is inserted into the magnetic gap 51 after passing through the bore 62. The magnetic steel 53 may be a permanent magnet. Furthermore, the basin frame 1 includes a cylindrical portion 11 covering the outside of the U-iron 52, and the positioning branch slice 6 and the cylindrical portion 11 of the basin frame 1 are fixedly connected. Specifically, in this embodiment, the positioning branch slice 6 and the cylindrical portion 11 are bonded by an adhesive. Specifically, as shown in FIG. 3, the U-iron 52 includes a top and a side extending from the edge of the top, thereby surrounding the mounting chamber, and the magnetic steel 53 and the front panel 54 are stacked vertically and installed in the mounting chamber. The top surface of the magnetic steel 53 and the top of the U-iron 52 are fixedly connected, for example, by adhesive, and the top surface of the front panel 54 and the bottom surface of the magnetic steel 53 are fixedly connected, for example, by adhesive. In addition, the center of the top of the U-iron 52 protrudes downward. The above-mentioned magnetic gap 51 is formed between the inner surface of the side of the U-iron 52, the outer peripheral surface of the magnetic steel 53, and the outer peripheral surface of the front panel 54, and in a plan view, the magnetic gap 51 is annular. The top surface of the U-iron 52 has a groove recessed downward in the center, and a through hole is opened in the center of the front panel 54.

[0035] The sound cone 2 includes a cone-shaped body 23 that is a truncated cone, and the inner end 22 is located at the cone top of the cone-shaped body 23. Specifically, the inner end 22 is a voice coil mounting hole provided at the cone top, and the voice coil 4 is tightly engaged with the hole wall of the voice coil mounting hole through the voice coil mounting hole. The outer end 21 of the sound cone 2 includes a yoke ring 211 that is connected to the cone bottom of the cone-shaped body 23, and the yoke ring 211 and the basin frame 1 are fixedly connected. The cone-shaped body 23 is formed by surrounding it from a sheet material (paper, PP sheet, etc.), and the yoke ring 211 surrounds the outer end of the cone-shaped body 23 and fixes the cone-shaped body 23 to the basin frame 1, for example by bonding with an adhesive.

[0036] After the voice coil 4 is powered on, due to electromagnetic induction, the voice coil 4 can perform vertical reciprocating motion, that is, the voice coil 4 vibrates up and down, and the voice coil 4 is tightly engaged with the inner end 22 of the sound cone 2, so that the voice coil 4 makes the sound cone 2 vibrate up and down in conjunction with the sound cone 2. The voice coil 4 of this embodiment is less likely to vibrate left and right, because the inner edge 63 of the positioning branch slice 6 is bonded to the cylindrical part 11 of the basin frame 1, and the outer edge 61 of the positioning branch slice 6 is fixedly connected to the sound cone 2, so that the voice coil 4 reduces the horizontal vibration and basically vibrates up and down, avoiding the impact on sound quality.

[0037] As shown in FIG. 1 and FIG. 3, the voice coil 4 has a lead connection part 41 that runs from the voice coil mounting hole to the outside of the sound cone 2, and the voice coil 4 has two leads 42, one end of which is connected to the lead connection part 41. The basin frame 1 is provided with a terminal 12, which includes a solder lug 121 embedded in the basin frame 1, and the other end of the lead 42 is conductively connected to the solder lug 121. This terminal 12 is connected to a power amplifier or the like via a cable and can receive an audio signal, which is transmitted to the voice coil 4 via the lead 42 and vibrates due to the action of the magnetic circuit system 5, electro-acoustic conversion is performed, and the sound cone 2 is driven to vibrate and produce sound. A braided wire is used as the lead 42. Furthermore, the wiring of the lead 42 in this embodiment is independent of the positioning branch slice 6 and does not need to be connected to the positioning branch slice 6, simplifying assembly and manufacturing.

[0038] The voice coil 4 is provided with a plurality of through holes 43 that serve to dissipate heat. The plurality of through holes 43 are provided at intervals in the circumferential direction of the voice coil 4, and the positions of the through holes 43 are lower than the positioning branch slice 6. A portion of the voice coil 4 protrudes outside the sound cone 2, and the inverted speaker includes a dust cap 7 for covering the voice coil 4 to prevent dust from entering the speaker.

[0039] As shown in FIG. 1, the basin frame 1 includes a main body 13 and a skirt 14 that folds and extends from the outer edge of the main body 13, the sound cone 2 is located in the space surrounded by the main body 13 and the skirt 14, and the terminal 12 is located in the skirt 14. The main body 13 is provided with a plurality of hollows 131, which can reduce the weight of the basin frame 1 and at the same time contribute to heat dissipation. The basin frame 1 achieves both protection and support. Specifically, the main body 13 is mainly composed of the above-mentioned cylindrical body 11 and a plurality of connecting ribs. The multiple connecting tools are provided at intervals in the circumferential direction of the cylindrical body 11, and each connecting rib extends outward in the radial direction of the cylindrical body. Each connecting part gradually inclines upward from the inside to the outside, and the above-mentioned hollows 131 are formed between adjacent connecting ribs.

[0040] This embodiment further provides a car audio system including the above-mentioned inverted speaker. Moreover, this inverted speaker is used in the car door panel of a vehicle and is used as a door panel speaker. Comparing the vehicle speaker shown in Fig. 5 and Fig. 6, the positioning branch slice is located outside the magnetic circuit system and the sound cone, while in the inverted speaker of this embodiment, the outer edge of the positioning branch slice is bonded to the inner surface of the cone-shaped body of the sound cone, forming a structure in which the positioning branch slice is located in the middle between the sound cone and the magnetic circuit system, so that the overall height of the speaker is reduced, the space it occupies is reduced, and it is more suitable for the structural installation requirements of the flat and narrow space, while saving the space of the vehicle door panel.

[0041] In addition to reducing the overall height of the speaker and occupying less space, this embodiment also has at least the following four advantages. (1) The positioning branch slice is connected to the basin frame and glued to the basin frame, which provides a higher dust-proof effect. Compared with the inverted speaker shown in Figures 5 and 6, the speaker of this embodiment does not require the dust net 8' and one of the basin frames 1'; (2) Compared with the inverted speaker shown in Figures 5 and 6, the positioning branch slice and reed thereof are an integrated model, and the reed needs to pass through the positioning branch slice, which results in high assembly and processing costs. Meanwhile, the positioning branch slice and reed of this embodiment are independent and separate, which results in a simpler manufacturing process flow and lower costs; (3) The positioning branch slice of this embodiment is fixedly connected to the basin frame, and the outer edge of the positioning branch slice is connected to the sound cone, which makes it difficult for the voice coil to vibrate left and right and avoids affecting sound quality; (4) The magnetic circuit system and the positioning branch slice are between the sound cone and the basin frame, and the voice coil is basically inside the basin frame and not exposed to the outside, which avoids collisions and provides good protection for the internal structures of the sound cone, voice coil, etc.

[0042] Those of skill in the art will appreciate that, as used herein, the singular forms "a," "the," and "the" can also include the plural forms unless specifically stated otherwise.

[0043] As used in the specification and claims, the terms "comprising" and "comprising" are used to suggest only the inclusion of explicitly labeled steps and elements, but do not constitute an exclusive list; other steps or elements may also be included in the method or apparatus. As used herein, the term "and / or" includes any combination of one or more of the associated listed items.

[0044] Furthermore, in this disclosure, "plurality" refers to two or more, and other quantifiers are understood to be similar thereto. "And / or" describes a relational relationship between related objects, and indicates that three kinds of relations can exist, for example, "A and / or B" can represent three kinds of situations: A exists alone, A and B exist simultaneously, and B exists alone.

[0045] In this embodiment, unless expressly stated and limited otherwise, a first feature being "above" or "below" a second feature may include direct contact between the first and second features, or may include contact between the first and second features through other features between them, but not directly between them. And a first feature being "above," "upper," and "on the upper surface" of a second feature may include the first feature being directly above or diagonally above the second feature, or may only indicate that the horizontal height of the first feature is higher than that of the second feature. A first feature being "below," "lower," and "on the lower surface" of a second feature may include the first feature being directly below or diagonally below the second feature, or may only indicate that the horizontal height of the first feature is lower than that of the second feature.

[0046] The above embodiments are merely for illustrating the technical ideas and features of the present invention, and are preferred embodiments, for the purpose of allowing those skilled in the art to understand and practice the contents of the present invention, but cannot limit the scope of protection of the present invention. Any equivalent changes or modifications made substantially according to the principles of the present invention should be included in the scope of protection of the present invention. [Explanation of symbols]

[0047] 1', basin frame 2', Sound cone 4', voice coil 42', Lead 5', Magnetic circuit system 6', Positioning branch slices 8. Dust cover 1, Basin frame 11. Cylindrical part 12. Terminal 121, solder lug 13. Main body 131, hollow part 14, hem 2. Sound cone 21, outer end 211 - York Ring 22, inner end 23. Cone-shaped body 4. Voice coil 41, lead connection part 42, Lead 43, hole 5. Magnetic circuit system 51. Magnetic gap 52. U-steel 53, magnetic steel 54. Front panel 6. Positioning branch slices 61, outer edge 62, medium hole 63. Common-law marriage 7. Dust cap

Claims

1. A basin frame; a sound cone having opposite open outer and inner ends, the outer end being covered by the basin frame and the outer end being connected to the basin frame; a voice coil connected to the inner end of the sound cone; a magnetic circuit system for driving the voice coil to vibrate, the magnetic circuit system being provided on the basin frame and having a magnetic gap, a portion of the voice coil being inserted into the magnetic gap, The inverted speaker is a positioning branch slice disposed between the basin frame and the sound cone, the positioning branch slice having an outer edge connected to the sound cone; An inverted speaker that features

2. The central portion of the positioning branch slice is provided with a bore hole for exposing to the magnetic gap and an inner edge surrounding the bore hole, and the inner edge of the positioning branch slice is connected to the basin frame.

2. The speaker according to claim 1 .

3. The magnetic circuit system includes a U-iron, a magnetic steel provided in the U-iron, and a front panel, the magnetic gap is formed between the inner surface of the U-iron and the outer surfaces of the magnetic steel and the front panel, and the voice coil is inserted into the magnetic gap after passing through the bore.

3. The speaker according to claim 2.

4. The basin frame has a cylindrical portion covering the U-iron, and the inner edge of the positioning branch slice and the cylindrical portion of the basin frame are fixedly connected to each other.

4. The speaker according to claim 3.

5. The inner edge of the positioning branch slice and the cylindrical portion of the basin frame are bonded together by an adhesive.

5. The speaker according to claim 4.

6. The sound cone includes a conical body having a truncated cone shape, the inner end of the conical body is located at the cone top of the conical body, and the outer end of the conical body includes a yoke ring connected to the cone bottom of the conical body, the yoke ring is fixedly connected to the basin frame, and the outer edge of the positioning branch slice is fixedly connected to the inner surface of the conical body.

2. The speaker according to claim 1 .

7. The inner end is a voice coil mounting hole provided on the upper part of the cone, and the voice coil is bonded to the hole wall of the voice coil mounting hole through the voice coil mounting hole.

7. The loudspeaker according to claim 6.

8. The voice coil includes a lead connection portion that extends from the voice coil mounting hole to the outside of the sound cone, and one end of a lead of the voice coil is connected to the lead connection portion.

8. The loudspeaker according to claim 7.

9. The basin frame is provided with a terminal, the terminal including a solder lug embedded in the basin frame, and the other end of the lead is conductively connected to the solder lug.

9. The loudspeaker according to claim 8.

10. The outer edge of the positioning branch slice and the inner surface of the cone-shaped body are bonded together with an adhesive.

7. The loudspeaker according to claim 6.

11. The voice coil has a portion protruding outside the sound cone, and the inverted speaker further includes a dust cap for covering the portion of the voice coil protruding outside the sound cone.

2. The speaker according to claim 1 .

12. The basin frame includes a main body and a skirt portion that is folded and extends from the outer edge of the main body, the sound cone is located in a space surrounded by the main body and the skirt portion, and the main body is provided with a plurality of hollow portions.

2. The speaker according to claim 1 .

13. A terminal is provided at the bottom portion, and the voice coil lead has an inner end connected to the voice coil and an outer end connected to the terminal.

13. A loudspeaker as claimed in claim 12.

14. The voice coil is provided with a plurality of through holes.

2. The speaker according to claim 1 .

15. The inverted speaker according to any one of claims 1 to 13 is included. A car audio system comprising:

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