Thin loudspeaker and vehicle-mounted sound system

Abstract

The utility model discloses a thin loudspeaker and a vehicle-mounted sound system. The thin loudspeaker comprises a support, a sound basin, a voice coil connected to the sound basin, and a magnetic driving assembly used for driving the voice coil to vibrate up and down. The sound basin comprises an outer sound basin and an inner sound basin. The outer sound basin is provided with a first outer edge and a first inner edge, the first outer edge is higher than the first inner edge, and the first outer edge is connected to the support; the inner sound basin is provided with a second outer edge, the second outer edge is connected to the first inner edge, and the middle part of the inner sound basin is arched upwards relative to the second outer edge. According to the thin loudspeaker, under the condition that the sound radiation surface of the sound cone is not reduced, the heights of the sound cone and the bracket are reduced, so that the overall height / thickness of the loudspeaker is reduced, and the loudspeaker is relatively light and thin; meanwhile, the radial size of the magnetic driving assembly does not need to be increased.

Description

Technical Field

[0001] The utility model relates to a thin loudspeaker and a vehicle-mounted audio system. Background Art

[0002] Loudspeakers, especially car loudspeakers, are moving towards the concept of lightweight, environmental protection and energy saving. At present, there are some thin loudspeakers that can reduce the height or thickness of the loudspeakers. One type of solution reduces the height or thickness of the loudspeaker by placing part of the sound basin and the positioning support in the magnetic circuit. The loudspeaker of this solution includes a bracket, a positioning support, a voice coil, a paper cone and a magnetic conductive component. The bracket is installed on the magnetic conductive component, the voice coil is installed on the paper cone, the paper cone is installed on the bracket, and the positioning support is installed on the magnetic conductive component. The middle part of the magnetic conductive component has an avoidance hole, the positioning support is located in the avoidance hole, and the magnetic conductive component forms an extension in the avoidance hole, and the outer side of the positioning support is respectively connected to the extension. By setting the positioning support in the magnetic conductive component and assembling a part of the magnetic conductive component in the bracket, the height of the positioning support, the bracket and the paper cone partially overlaps to achieve the effect of reducing the thickness. However, in this speaker, the radial dimension of the magnetic circuit needs to be set larger to accommodate the positioning support, etc., resulting in an increase in the magnetic circuit, which leads to a significant increase in cost. Utility Model Content

[0003] The utility model aims to provide an improved thin loudspeaker and a vehicle-mounted audio system.

[0004] The technical solution adopted by the utility model is as follows:

[0005] A thin speaker comprises a bracket, a sound cone, a voice coil connected to the sound cone, and a magnetic drive assembly for driving the voice coil to vibrate up and down, wherein the sound cone comprises an outer sound cone and an inner sound cone;

[0006] The outer sound basin has a first outer edge and a first inner edge, the first outer edge is higher than the first inner edge, and the first outer edge is connected to the bracket;

[0007] The inner sound basin has a second outer edge, the second outer edge is connected to the first inner edge, and the middle portion of the inner sound basin is arched upward relative to the second outer edge.

[0008] In some preferred embodiments, the inner cone has a second inner edge, and the second inner edge is higher than the second outer edge.

[0009] In some more preferred embodiments, an upper end portion of the voice coil is connected to the second inner edge.

[0010] In some more preferred embodiments, the second inner edge is lower than or equal to the first outer edge;

[0011] The outer sound basin is in the shape of a truncated inverted cone that is larger at the top and smaller at the bottom, and the inner sound basin is in the shape of a truncated cone that is smaller at the top and larger at the bottom.

[0012] In some preferred embodiments, the first inner edge and the second outer edge are bonded to each other.

[0013] In some more preferred embodiments, the first inner edge and / or the second outer edge are connected with an upwardly bent flange, and the flange is stacked on the first inner edge or the second outer edge and adhered and bonded to each other.

[0014] In some preferred embodiments, the thin speaker further comprises a positioning support, and an outer edge of the positioning support is connected to the first inner edge and / or the second outer edge.

[0015] In some more preferred embodiments, the outer edge of the positioning support sheet and the first inner edge and / or the second outer edge are laminated and adhered to each other.

[0016] In some further preferred embodiments, the inner edge of the positioning support is connected to the magnetic drive assembly;

[0017] The bracket has a protruding portion protruding from the bottom thereof, the protruding portion is located outside the magnetic drive component or surrounds the magnetic drive component, and the positioning support piece is also connected to the protruding portion.

[0018] The utility model also adopts the following technical solutions:

[0019] A vehicle-mounted audio system comprises the thin loudspeaker.

[0020] The utility model adopts the above solution, which has the following advantages compared with the prior art:

[0021] The thin speaker of the utility model has a sound cone including two inner and outer sound cones combined together, with the inner sound cone being inverted on the outer sound cone. The height of the sound cone and the bracket is reduced without lowering the sound radiation surface of the sound cone, thereby reducing the overall height / thickness of the speaker, and the speaker is relatively light and thin; at the same time, there is no need to increase the radial size of the magnetic drive component. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solution of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 The figure is a top view of a thin loudspeaker according to an embodiment of the utility model.

[0024] Figure 2 for Figure 1 Sectional view along AA direction.

[0025] Figure 3 for Figure 2 A partial enlarged view of point B in the middle.

[0026] Figure 4 The figure is an exploded view of a thin speaker according to an embodiment of the utility model.

[0027] Figure 5 It is a structural diagram of a bracket according to an embodiment of the utility model.

[0028] in,

[0029] 1. Bracket; 11. Bottom; 110. Through hole; 12. Raised portion; 2. Sound basin; 21. External sound basin; 211. First external edge; 212. First internal edge; 22. Internal sound basin; 221. Second external edge; 222. Second internal edge; 23. Folding ring; 24. Flanged edge; 3. Voice coil; 31. Air flow hole; 4. Magnetic drive assembly; 40. Magnetic gap; 41. U iron; 5. Positioning support; 6. Dust cap. DETAILED DESCRIPTION

[0030] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art. It should be noted that the description of these embodiments is used to help understand the present invention, but does not constitute a limitation of the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0031] In the present invention, "inside" and "outside" are defined with reference to the center line of the voice coil of the speaker, and the direction closer to the center line of the voice coil is the inside, and the opposite is the outside. The directional words "upper", "lower" and "horizontal" are intended to facilitate the understanding of the structure of the speaker by those skilled in the art, and are not used to limit the state of the speaker after it is installed in the use scenario. For example, it can be installed on the upper surface, lower surface, upright surface or inclined surface of the vehicle interior component (such as sheet metal).

[0032] The present embodiment provides a speaker, in particular a thin speaker, which can be installed on a vehicle as a mid-range or bass sound generating unit of a vehicle audio system. The present embodiment also provides a vehicle audio system, which includes the above-mentioned thin speaker.

[0033] Reference Figures 1 to 5As shown, the thin speaker includes a bracket 1, a sound basin 2, a voice coil 3 connected to the sound basin 2, and a magnetic drive assembly 4 for driving the voice coil 3 to vibrate up and down. The speaker is installed on the sheet metal of the car through the bracket 1. The bracket 1 is a plastic part that is integrally injection-molded with plastic. The plastic includes but is not limited to PP or PC. The sound basin 2 and the magnetic drive assembly 4 are arranged on the bracket 1, and the voice coil 3 is located in the bracket 1. The upper end of the voice coil 3 is connected to the sound basin 2, and the lower end is inserted into the magnetic gap 40 of the magnetic drive assembly 4 so as to be movable up and down. The magnetic drive assembly 4 can provide a magnetic field. After the voice coil 3 is connected to the electrical signal, it can vibrate up and down under the action of electromagnetic induction.

[0034] The sound basin 2 includes an outer sound basin 21 and an inner sound basin 22. The outer sound basin 21 has a first outer edge 211 and a first inner edge 212, the first outer edge 211 is higher than the first inner edge 212, and the first outer edge 211 is connected to the bracket 1. The inner sound basin 22 has a second outer edge 221, the second outer edge 221 is connected to the first inner edge 212, and the middle part of the inner sound basin 22 is arched upward relative to the second outer edge 221. Specifically in this embodiment, in a top view, the outer sound basin 21 and the inner sound basin 22 are concentrically arranged circular rings, and the first outer edge 211 of the outer sound basin 21 is fixed to the bracket 1 by a folding ring 23, for example, by glue.

[0035] The inner sound basin 22 has a second inner edge 222, which is higher than the second outer edge 221. The upper end of the voice coil 3 is connected to the inner sound basin 22, specifically to the second inner edge 222 of the inner sound basin 22, for example, by gluing. The second inner edge 222 of the inner sound basin 22 is lower than the first outer edge 211 of the outer sound basin 21 or is equal to it.

[0036] Furthermore, the outer sound basin 21 is in the shape of a truncated inverted cone with a larger top and a smaller bottom, and the inner sound basin 22 is in the shape of a truncated cone with a smaller top and a larger bottom. The inner sound basin 22 is inverted on the outer sound basin 21. The first inner edge 212 of the outer sound basin 21 and the second outer edge 221 of the inner sound basin 22 are bonded to each other. Figure 3 As shown, the first inner edge 212 and / or the second outer edge 221 are connected with an upwardly bent flange 24, and the flange 24 is stacked on the first inner edge 212 or the second outer edge 221 and is attached to and bonded to each other. In this embodiment, the first inner edge 212 and / or the second outer edge 221 are both connected with an upwardly bent flange 24, forming two L-shaped structures, the first inner edge 212 and a flange 24 are stacked on each other, and the second outer edge 221 and a flange 24 are stacked on each other, attached to each other and bonded by glue.

[0037] The thin speaker further includes a positioning support sheet 5, the outer edge of which is connected to the first inner edge 212 and / or the second outer edge 221. The outer edge of the positioning support sheet 5 and the first inner edge 212 and / or the second outer edge 221 are laminated and bonded to each other, and can be bonded by glue. Figure 4 As shown, the outer edge of the positioning support plate 5 is an L-shaped structure with a downward depression in the middle. The outer edge of the positioning support plate 5 is stacked on the first inner edge 212 of the outer sound basin 21, the second outer edge 221 of the inner sound basin 22 and below the flange 24. The three layers are adhered to each other and bonded by glue.

[0038] The inner edge of the positioning support piece 5 is connected to the magnetic drive assembly 4. Specifically, the magnetic drive assembly 4 includes a U iron 41, which is fixed on the bottom 11 of the bracket 1. A central hole is opened in the middle of the positioning support piece 5, and the inner edge of the positioning support piece 5 surrounds the central hole. The inner edge of the positioning support piece 5 and the outer surface of the U iron 41 are in contact and can be further bonded to each other.

[0039] The bracket 1 has a protrusion 12 protruding from its bottom 11. The protrusion 12 is located outside the magnetic drive assembly 4 or surrounds the magnetic drive assembly 4. The positioning support sheet 5 is also connected to the protrusion 12, for example, by glue.

[0040] The bottom 11 of the bracket 1 is further provided with a through hole 110 , and the U iron 41 is arranged above the through hole and completely covers the through hole 110 .

[0041] The thin speaker further comprises a dust cap 6, which is disposed above the voice coil 3. Further, the outer edge of the dust cap 6 is fixedly connected to the upper end of the voice coil 3, for example, by gluing.

[0042] Furthermore, a plurality of air flow holes 30 are provided on the voice coil 3 to connect the space inside and outside the voice coil 3. It should also be noted that the positioning support 5 divides the space inside the bracket 1 into two parts, the lower part of the space is enclosed between the outer sound basin 21, the positioning support 5 and the bracket 1; the upper part of the space is formed between the inner sound basin 22, the dust cap and the positioning support 5, and also includes the magnetic gap 40 mentioned above.

[0043] The cone 2 of the thin speaker includes two inner and outer cones combined together, with the inner cone 22 inverted on the outer cone 21. The height of the cone 2 and the bracket 1 is reduced without lowering the sound radiation surface of the cone 2, thereby reducing the overall height / thickness of the speaker, and the speaker is relatively light and thin; at the same time, there is no need to increase the radial size of the magnetic drive assembly 4.

[0044] As shown in this specification and claims, the terms "comprises" and "includes" only indicate the inclusion of explicitly identified steps and elements, and these steps and elements do not constitute an exclusive list, and the method or device may also include other steps or elements.

[0045] It is further understood that in the present disclosure, "plurality" refers to two or more than two, and other quantifiers are similar thereto.

[0046] It is further understood that the terms "first", "second", etc. are used to describe various information, but such information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other, and do not indicate a specific order or degree of importance. In fact, the expressions "first", "second", etc. can be used interchangeably. For example, without departing from the scope of the present disclosure, the first information can also be referred to as the second information, and similarly, the second information can also be referred to as the first information.

[0047] The above embodiment is only for illustrating the technical concept and features of the utility model, and is a preferred embodiment. Its purpose is to enable people familiar with this technology to understand the content of the utility model and implement it accordingly, and it cannot be used to limit the protection scope of the utility model.

Claims

1. A thin speaker, comprising a bracket, a sound cone, a voice coil connected to the sound cone, and a magnetic drive assembly for driving the voice coil to vibrate up and down, characterized in that: The sound basin includes an outer sound basin and an inner sound basin; The outer sound basin has a first outer edge and a first inner edge, the first outer edge is higher than the first inner edge, and the first outer edge is connected to the bracket; The inner sound basin has a second outer edge, the second outer edge is connected to the first inner edge, and the middle portion of the inner sound basin is arched upward relative to the second outer edge.

2. The thin speaker according to claim 1, characterized in that: The inner cone has a second inner edge, and the second inner edge is higher than the second outer edge.

3. The thin speaker according to claim 2, characterized in that: The upper end of the voice coil is connected to the second inner edge.

4. The thin speaker according to claim 2, characterized in that: The second inner edge is lower than or equal to the first outer edge; The outer sound basin is in the shape of a truncated inverted cone that is larger at the top and smaller at the bottom, and the inner sound basin is in the shape of a truncated cone that is smaller at the top and larger at the bottom.

5. The thin speaker according to claim 1, characterized in that: The first inner edge and the second outer edge are bonded to each other.

6. The thin speaker according to claim 5, characterized in that: The first inner edge and / or the second outer edge are connected with an upwardly bent flange, and the flange is stacked on the first inner edge or the second outer edge and adhered and bonded to each other.

7. The thin speaker according to claim 1, characterized in that: The thin speaker further includes a positioning support, wherein an outer edge of the positioning support is connected to the first inner edge and / or the second outer edge.

8. The thin speaker according to claim 7, characterized in that: The outer edge of the positioning support sheet and the first inner edge and / or the second outer edge are laminated and adhered to each other.

9. The thin speaker according to claim 7, characterized in that: The inner edge of the positioning support piece is connected to the magnetic drive assembly; The bracket has a protruding portion protruding from the bottom thereof, the protruding portion is located outside the magnetic drive component or surrounds the magnetic drive component, and the positioning support piece is also connected to the protruding portion.

10. A vehicle audio system, characterized in that: The invention comprises a thin speaker as claimed in any one of claims 1 to 9.

Images