Inverted 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 more particularly to inverted speakers and car audio systems. [Background technology]

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

[0004] Currently, some car audio systems use inverted speakers. For example, as shown in Figures 5 and 6, the positioning branch slice 6' of this inverted speaker is located outside the magnetic circuit system 5' and the sound cone 2', which is large in volume. The inverted speaker uses two basin frames 1', and the dust net 8, magnetic circuit system 5', sound cone 2', and voice coil 4' are placed between the two basin frames 1'. Holes must be drilled in the positioning branch slice 6' to align the lead 42' with the positioning branch slice 6', which is relatively costly. Summary of the Invention [Problem to be solved by the invention]

[0005] SUMMARY OF THE INVENTION 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, which has a low overall height, occupies a small space, and is 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] A first aspect of the present invention is 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 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, with a portion of the voice coil 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 has 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 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.

[0011] In some embodiments, the basin frame includes a cylindrical portion covering 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 the cone top of the conical body, and the outer end including a yoke ring connected to the 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 the inner surface of the conical body.

[0014] In some embodiments, the inner end is a voice coil mounting hole provided in the upper part 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 conical 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] Furthermore, 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 multiple hollow portions for sound transmission.

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

[0021] Furthermore, most of the voice coil is also located within the space, so the basin frame can provide good protection for the internal components such as the sound cone and 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, facilitating assembly, and eliminating the need to bend the lead multiple times, thereby avoiding lead damage.

[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 significantly 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 the 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-described inverted speaker.

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

[0027] Using 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 arranged 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 located 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 flat and narrow spaces, while saving space on 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 function to position the voice coil, but also block dust and dirt from entering the magnetic gap, thereby providing a dustproof effect, eliminating the need for 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 any creative work required. [Brief explanation 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. [Figure 2] FIG. 2 is a plan view of an inverted installation type speaker according to an embodiment of the present invention. [Figure 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. [Figure 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 INVENTION

[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 accompanying drawings. Note that the description of these embodiments contributes to understanding the present invention, but does not constitute a limitation on the present invention. Furthermore, the technical features of various embodiments of the present invention described below can be combined with each other unless they are mutually inconsistent.

[0032] This embodiment provides an inverted installation speaker. As shown in Figures 1 to 3, this inverted installation 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 serves to fix the sound cone 2, the magnetic circuit system 5, and the positioning branch slice 6. In a plan view, this inverted installation speaker has an overall circular shape.

[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, and a portion of the voice coil 4 is inserted into the magnetic gap 51. The positioning branch slice 6 is disposed between the basin frame 1 and the sound cone 2, and 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 conical body 23 having a truncated cone shape, and the outer edge 61 of the positioning branch slice 6 is bonded to the center of the conical body 23, thereby reducing the overall height of the speaker, reducing the space it occupies, and more suitable for structural installation requirements in flat and narrow spaces. Here, the positional terms "inner" and "outer" are defined relative to the center line of the speaker body (preferably coinciding with the center lines of the cone 2 and voice coil 3), with the side closer to this center line being the inner side and the side closer to this center line being the outer side.

[0034] As shown in FIGS. 1 and 4 , the center of the positioning branch slice 6 has a bore 62 exposed to the magnetic gap 51 and an inner edge 63 surrounding the bore 62. 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 magnetically conductive U-iron 52, a magnetic steel 53 disposed within 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 surfaces of the magnetic steel 53 and the front panel 54. 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. 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 together with an adhesive. Specifically, as shown in FIG. 3, the U-iron 52 includes a top and a peripheral side extending from the edge of the top, thereby enclosing a mounting chamber. The magnetic steel 53 and front panel 54 are stacked vertically and installed within this 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 are fixedly connected, for example, by adhesive, to the bottom surface of the magnetic steel 53. The center of the top of the U-iron 52 protrudes downward. The magnetic gap 51 described above is formed between the inner surface of the side of the U-iron 52 and the outer surface of the magnetic steel 53 and the outer surface of the front panel 54. In plan view, the magnetic gap 51 is annular. The top surface of the U-iron 52 has a downwardly recessed groove in the center, and a through-hole is drilled in the center of the front panel 54.

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

[0036] After the voice coil 4 is powered on, electromagnetic induction causes the voice coil 4 to perform vertical reciprocating motion, i.e., the voice coil 4 vibrates up and down. The voice coil 4 is tightly engaged with the inner end 22 of the sound cone 2, so the voice coil 4 causes the sound cone 2 to vibrate up and down in unison. 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 horizontal vibration and basically vibrates up and down, which avoids affecting sound quality.

[0037] As shown in FIGS. 1 and 3 , the voice coil 4 includes a lead connection portion 41 extending from the voice coil mounting hole to the outside of the sound cone 2. The voice coil 4 also includes two leads 42, one end of which is connected to the lead connection portion 41. The base frame 1 is provided with a terminal 12, which includes a solder lug 121 embedded in the base 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 to receive an audio signal. The audio signal is transmitted to the voice coil 4 via the leads 42, vibrates due to the action of the magnetic circuit system 5, and electro-acoustic conversion is performed, driving the sound cone 2 to vibrate and produce sound. A braided wire is used as the leads 42. Furthermore, the wiring of the leads 42 in this embodiment is independent of the positioning branch slice 6 and does not need to be routed through 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 through holes 43 are positioned 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 within the space enclosed by the main body 13 and skirt 14, and the terminal 12 is located within the skirt 14. The main body 13 has multiple hollows 131, which reduce the weight of the basin frame 1 and contribute to heat dissipation. The basin frame 1 provides both protection and support. Specifically, the main body 13 is primarily composed of the aforementioned cylindrical body 11 and multiple connecting ribs. Multiple connectors are spaced apart around the circumferential direction of the cylindrical body 11, and each connecting rib extends radially outward from the cylindrical body. Each connecting portion gradually slopes upward from the inside to the outside, and the aforementioned hollows 131 are formed between adjacent connecting ribs.

[0040] This embodiment also provides a car audio system including the above-mentioned inverted installation speaker. Furthermore, this inverted installation speaker is installed in a vehicle door panel and used as a door panel speaker. Comparing the vehicle speakers shown in Figures 5 and 6, the positioning branch slices are located outside the magnetic circuit system and sound cone, while in the inverted installation speaker of this embodiment, the outer edge of the positioning branch slice is bonded to the inner surface of the conical body of the sound cone, forming a structure in which the positioning branch slice is located in the center of the sound cone and the magnetic circuit system. This reduces the overall height of the speaker, reducing its space consumption and better meeting the structural installation requirements in flat and narrow spaces, while also saving space on the vehicle door panel.

[0041] Furthermore, 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 and glued to the basin frame, which provides a higher dustproof effect. Compared with the inverted installation 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 installation speaker shown in Figures 5 and 6, the positioning branch slice and reed are an integrated model, and the reed must pass through the positioning branch slice, which increases the assembly and processing costs. In contrast, the positioning branch slice and reed of this embodiment are independent and separate, which makes the manufacturing process simpler and less costly. (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 less likely for the voice coil to vibrate left and right and avoids affecting sound quality. (4) The magnetic circuit system and positioning branch slice are located between the sound cone and the basin frame, and the voice coil is basically located within the basin frame and not exposed to the outside, which avoids collisions and ensures good protection of the internal structures of the sound cone, voice coil, etc.

[0042] Those skilled in the art will understand that as used herein, the singular forms "a," "the," and "the" may include the plural forms as well, unless specifically stated otherwise.

[0043] As used herein and in the claims, the terms "comprises" and "comprising" only suggest 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, it is understood that "plurality" in this disclosure refers to two or more, and other quantifiers have similar meanings. "And / or" describes a related relationship between related objects, and indicates that three types of relationships can exist, for example, "A and / or B" can represent three 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 via other features between them rather than direct contact. Furthermore, a first feature being "above," "above," 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 simply indicate that the horizontal height of the first feature is higher than that of the second feature. A first feature being "below," "below," 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 simply indicate that the horizontal height of the first feature is lower than that of the second feature.

[0046] The above examples are merely for illustrating the technical ideas and features of the present invention, and are preferred embodiments, with the aim that those skilled in the art can understand and practice the contents of the present invention, but they do not 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 an outer end and an inner end, the outer end being covered by the basin frame and 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, with a portion of the voice coil inserted into the magnetic gap; The inverted speaker is a positioning branch slice disposed between the basin frame and the sound cone, the outer edge of the positioning branch slice being connected to the sound cone; The inner end portion includes a voice coil mounting hole, and the voice coil has a lead connection portion that extends through the voice coil mounting hole to the outside of the sound cone, and an end portion of the lead of the voice coil is connected to the lead connection portion, and the lead is located outside the space enclosed between the basin frame and 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. 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.

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 with 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 which is located at the cone top of the conical body, and the outer end of which includes a yoke ring connected to the cone bottom of the conical body, the yoke ring and the basin frame being fixedly connected, and the outer edge of the positioning branch slice and the inner surface of the conical body being fixedly connected.

2. The speaker according to claim 1.

7. The voice coil mounting hole is provided on the top 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 speaker according to claim 6.

8. 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.

2. The speaker according to claim 1.

9. 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 speaker according to claim 6.

10. The inverted speaker further includes a dust cap for covering a portion of the voice coil that protrudes outside the sound cone.

2. The speaker according to claim 1.

11. The basin frame includes a main body and a skirt portion that is bent 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 has a plurality of hollow portions.

2. The speaker according to claim 1.

12. 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.

12. The loudspeaker of claim 11.

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

2. The speaker according to claim 1.

14. The inverted speaker according to any one of claims 1 to 13 is included. A car audio system characterized by:

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