Speakers and Sound Systems

Abstract

The present application provides a speaker and an audio system. The speaker includes a frame, a diaphragm mounted on the frame and used to vibrate to produce sound, a voice coil used to drive the diaphragm to vibrate, and a magnetic circuit system mounted on the frame and having a magnetic gap for inserting the lower end of the voice coil to drive the voice coil to vibrate. The speaker further includes an annular member mounted on the upper end of the voice coil and connected to the diaphragm. The present application can be realized at low cost, with a more pronounced low frequency response when operating and no frequency response superimposition when operating with a tweeter.

Description

[Technical field]

[0001] The present application relates to the field of speakers, in particular to speakers and sound systems, and more particularly to car speakers and sound systems.

[0002] This application claims priority to a Chinese patent application filed on January 18, 2021, bearing application number 2021100625169, the entire contents of which are incorporated herein by reference. [Background technology]

[0003] FIG. 1 is a schematic structural diagram of a conventional speaker such as a superwoofer, a woofer, or a squawker. As shown in FIG. 1, the conventional speaker includes a frame 1, a diaphragm 2 installed on the frame 1, and a voice coil 3 driven to vibrate by a magnetic circuit system 4. The upper end of the voice coil 3 is directly fixed to the diaphragm 2 by a method such as gluing. For example, a mounting hole is opened in the middle of the diaphragm 2, the voice coil 3 is installed in the mounting hole, and its outer wall is glued to the diaphragm 2. A dust cap 5 for covering the voice coil 3 is also fixed on the diaphragm 2. In some application scenarios, such as an in-car sound system for reproducing sound in a car, such a speaker needs to be operated in combination with a tweeter. When operating with a tweeter, superimposition of frequency response occurs, and the gradation of the sound is not clear. To solve this problem, a low-pass filter is designed in the driver circuit board of the speaker to eliminate the superimposition of the frequency response of the superwoofer, the woofer, or the squawker and the tweeter. However, such a solution is relatively expensive, and the manufacturing and processing of the speaker is relatively complicated, resulting in poor cost performance. Summary of the Invention [Problem to be solved by the invention]

[0004] In view of the above problems, one objective of the present application is to provide a speaker that can be realized at a low cost, in which low frequencies are more prominent when operating with a tweeter, and no frequency response superimposition occurs when operating with a tweeter.

[0005] Another object of the present invention is to provide an audio system that can make the sound more natural and clean and provide a clearer sense of gradation at a relatively low cost without installing a low-pass filter in the circuit. [Means for solving the problem]

[0006] According to a first aspect of the present application, there is provided a speaker including a frame, a diaphragm, a voice coil, and a magnetic circuit system, the diaphragm being used to vibrate to produce sound and being installed on the frame, the voice coil being used to drive the diaphragm to vibrate, the magnetic circuit system being used to drive the voice coil to vibrate, being installed on the frame, and having a magnetic gap for inserting a lower end of the voice coil.

[0007] The speaker further includes an annular member disposed at an upper end of the voice coil and connected to the diaphragm.

[0008] In one preferred embodiment, the annular member is coaxial with the voice coil, i.e. the centre line of the annular member and the centre line of the voice coil overlap each other.

[0009] In one preferred embodiment, the annular member is fitted over an upper end of the voice coil.

[0010] In one more preferred embodiment, a mounting hole is provided in the diaphragm, the upper end of the voice coil is inserted into the mounting hole, the inner surface of the annular member is joined to the outer surface of the voice coil, and the outer surface of the annular member is joined to the hole wall of the mounting hole.

[0011] Additionally, the inner surface of the annular member is bonded to the outer surface of the voice coil.

[0012] Additionally, the outer surface of the annular member adheres to the wall of the mounting hole.

[0013] In one preferred embodiment, the lower portion of the annular member is positioned to be inserted into the upper end of the voice coil.

[0014] According to one preferred and specific aspect, the annular member itself can be formed by curing a silane adhesive and adhered directly to the voice coil and diaphragm.

[0015] Furthermore, in one preferred embodiment, the speaker further includes a dust cap connected to the diaphragm and covering an upper portion of the mounting hole.

[0016] In one preferred embodiment, the material of the annular member is selected from paper or rubber.Further, in one preferred embodiment, the material of the annular member is one of paper, non-foam rubber, foam rubber, silicone, or soft adhesive.

[0017] In one specific and preferred embodiment, the annular member is a flexible member, and the material of the annular member is a silane adhesive.

[0018] In one preferred embodiment, the annular member has a generally hollow cylindrical shape.

[0019] In one preferred embodiment, the height (size along the axial direction) of the annular member is 0.5 to 5 mm. In this specification, the "axial direction" specifically refers to the direction along the center line of the voice coil.

[0020] In one preferred embodiment, the speaker is a superwoofer, a woofer or a squawker. When used as a woofer, it may be an independent woofer or a woofer unit of a coaxial speaker with two or more channels.

[0021] In one preferred embodiment, the speaker is a car speaker.

[0022] In one embodiment, the magnetic circuit system is an external magnetic structure. In another embodiment, the magnetic circuit system is an internal magnetic structure or a flip-chip magnetic circuit structure.

[0023] Furthermore, the magnetic circuit system employs ferrite, rubidium iron boron or rubidium nickel cobalt magnetic steel.

[0024] In one preferred embodiment, the voice coil is connected to the diaphragm only through the annular member, i.e., the voice coil and the diaphragm are not in direct contact with each other but are indirectly connected to each other only through the annular member.

[0025] According to a second aspect of the present application, there is provided an in-vehicle audio system including a tweeter, the in-vehicle audio system further including at least one selected from a superwoofer, a woofer, and a squawker, the superwoofer, the woofer, or the squawker being the speaker described above.

[0026] In one preferred embodiment, the sound system is a vehicle sound system, while in another embodiment, the sound system is a home sound system.

[0027] According to a third aspect of the present application, there is provided a coaxial speaker including a tweeter unit and a woofer unit, the woofer unit using the speaker described above. Effect of the Invention

[0028] The above-mentioned technical solution of the present application has the following advantages over the prior art: In the speaker of the present application, the upper end of the voice coil is connected to the diaphragm by an annular member, so that the mid-frequency band and high-frequency band of the speaker can be rapidly reduced, the low frequency is more prominent when the speaker is in operation, and no superimposition of frequency response occurs when working with the tweeter, so that the sound can be made more natural and clean with a clear sense of gradation at a relatively low cost. Under this premise, the cost of the speaker and the audio system is relatively low, the cost performance is relatively high, and the manufacturing and process operation of the speaker are relatively simple. [Brief description of the drawings]

[0029] In order to more clearly describe the technical solution of the present application, the following briefly introduces the drawings that need to be used to describe the embodiments. Obviously, it should be understood that the drawings only show some embodiments of the present application, and those skilled in the art can obtain other related drawings from these drawings without creative labor. [Figure 1] FIG. 1 is a schematic diagram of the structure of a conventional speaker. [Diagram 2] 1 is a structural schematic diagram of a speaker according to an embodiment of the present application. [Diagram 3] FIG. 2 is an exploded schematic view of a speaker according to an embodiment of the present application. [Figure 4] FIG. 2 is a comparison diagram of frequency response curves of a conventional speaker and a speaker according to an embodiment of the present application. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0030] Hereinafter, preferred embodiments of the present application will be described in detail with reference to the drawings, so that those skilled in the art can more clearly understand the advantages and features of the present application. Note that the description of these embodiments is used for understanding the present application, and does not limit the present application. In addition, the technical features included in the various embodiments of the present application described below can be combined with each other as long as they are not inconsistent with each other.

[0031] In the description of this application, orientations or positional relationships indicated by terms such as "upper," "lower," "inner," "outer," and the like are based on the orientations or positional relationships shown in the drawings and are merely for the purpose of briefly and clearly describing this application, and are not to be construed as limiting this application, as they do not indicate or imply that an apparatus or device has a particular orientation or must be constructed and operated in a particular orientation.

[0032] In the description of this application, unless otherwise clearly specified and limited, the terms "attach", "connect with each other", and "connect" should be understood in a broad sense, for example, they may be fixedly connected, detachably connected, integrally connected, mechanically connected, electrically connected, directly connected, indirectly connected through an intermediate medium, or the insides of two elements may be communicated. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific situation.

[0033] It should be further understood that "plurality" as used herein means two or more and other quantifiers are similar. The singular forms "a," "said," and "the" are intended to include the plural forms unless the context clearly indicates otherwise.

[0034] The endpoints of the ranges and any values ​​disclosed herein are not limited to the exact ranges or values, and these ranges or values ​​should be understood to include the values ​​adjacent to these ranges or values. With respect to numerical ranges, the values ​​between the endpoints of the ranges, between the endpoints of the ranges and the single point values, and between the single point values ​​can be combined with each other to obtain one or more new numerical ranges, and these numerical ranges should be considered to be specifically disclosed herein.

[0035] This embodiment provides a speaker, specifically, a car speaker, which can be a superwoofer, a woofer, or a squawker of a car sound system. As shown in FIG. 2 and FIG. 3, the speaker includes a frame 1, a diaphragm 2, a voice coil 3, and a magnetic circuit system 4. The frame 1 is used to support the internal components of the entire speaker and connect to the components of the automobile, and the center of the frame 1 is hollowed out and used to accommodate the diaphragm 2, the voice coil 3, and the magnetic circuit system 4. The diaphragm 2 is used to vibrate and produce sound, and the diaphragm 2 is installed on the frame 1. The voice coil 3 is used to drive the diaphragm 2 to vibrate. The magnetic circuit system 4 is used to drive the voice coil 3 to vibrate, and the magnetic circuit system 4 is installed on the frame 1, and the magnetic circuit system 4 has a magnetic gap 40 into which the lower end of the voice coil 3 is inserted. The speaker further includes an annular member 7, which is installed on the upper end of the voice coil 3 and connected to the diaphragm 2. The voice coil 3 and the diaphragm 2 are not in direct contact with each other, but are indirectly connected to each other only by the annular member 7 .

[0036] The diaphragm 2 includes a cone body 21 and an edge ring 22 surrounding the outside of the cone body 21, the edge ring 22 is fixedly connected to the upper surface of the frame 1, and the cone body 21 is located inside the frame 1. The diameter of the cone body 21 gradually decreases from top to bottom, and the edge ring 22 is connected to the upper edge of the cone body 21. Specifically, the edge ring 22 is bonded to the upper edge of the cone body 21, and the edge ring 22 is bonded to the upper surface of the frame 1. A mounting hole 210 for mounting the voice coil 3 is provided at the lower part (i.e., the middle position) of the cone body 21.

[0037] The lower end of the voice coil 3 is a coil portion that is used for insertion into the magnetic gap 40 of the magnetic circuit system 4 and can vibrate up and down by electromagnetic action. The upper portion of the voice coil 3 is a skeleton that is fixed to the diaphragm 2 by an annular member. A connection port 11 is opened on the side of the frame 1, and a pair of solder lugs 12 are embedded in the connection port 11, and the positive and negative electrodes of the lead wires of the voice coil 3 are connected to the pair of solder lugs 12 to facilitate the input of an external audio signal.

[0038] The annular member 7 and the voice coil 3 are coaxial. That is, the center line of the annular member 7 and the center line of the voice coil 3 overlap each other. Furthermore, the annular member 7 is placed over the upper end of the voice coil 3. The upper end of the voice coil 3 is inserted into the mounting hole 210, and the inner surface of the annular member 7 is bonded to the outer surface of the voice coil 3, and the outer surface of the annular member 7 is bonded to the hole wall of the mounting hole 210. Specifically, the inner surface of the annular member 7 is bonded to the outer surface of the voice coil 3, and the outer surface of the annular member 7 is bonded to the hole wall of the mounting hole 210, for example, by bonding. In some other embodiments, the lower end of the annular member 7 is installed so as to be inserted into the upper end of the voice coil 3.

[0039] The material of the annular member 7 is one selected from paper, non-foamed rubber, foamed rubber, and silane adhesive. In this embodiment, the annular member 7 is formed by hardening the silane adhesive, and can be directly bonded between the diaphragm 2 and the voice coil 3. In addition, the annular member 7 thus formed is made of a flexible material, and can flexibly connect the diaphragm 2 and the voice coil 3, further improving the performance.

[0040] The overall shape of the annular member 7 is a hollow cylinder. The size (height) of the annular member 7 along the axial direction (the vertical direction in FIG. 2) is 0.5 to 5 mm.

[0041] The speaker further includes a dustproof cap 5, which is connected to the diaphragm 2 and covers the upper part of the mounting hole 210.

[0042] In this embodiment, the magnetic circuit system 4 has an external magnetic structure. The magnetic circuit system 4 includes a front panel 41, a magnetic steel 42, and a rear panel 43. The rear panel 43 has a columnar portion extending upward in the middle thereof. The magnetic steel 42 and the front panel 41 are installed so as to cover the columnar portion from bottom to top. Furthermore, there is a gap between the columnar portion and the front panel 41 and between the magnetic steel 42 and the columnar portion, that is, the magnetic gap 40 is formed. The magnetic steel 42 is ferrite, rubidium iron boron, or rubidium nickel cobalt magnetic steel 42. In another embodiment, the magnetic circuit system has an internal magnetic structure.

[0043] The speaker further includes a damper 6, which covers the voice coil 3, and the outer edge of the damper 6 is fixed to the frame 1 to prevent the voice coil 3 from shaking in the horizontal direction. Therefore, the voice coil 3 can vibrate only in the vertical direction.

[0044] The present embodiment further provides an in-vehicle sound system including a tweeter, the in-vehicle sound system further including at least one selected from a superwoofer, a woofer, and a squawker, the superwoofer, the woofer, or the squawker being the speaker described above.

[0045] The present embodiment further provides an audio system including a coaxial speaker with two or more channels, the coaxial speaker including a tweeter unit and a woofer unit, the woofer unit using the speaker as described above.

[0046] In this embodiment, the voice coil 3 and the diaphragm 2 are connected by the annular member 7, so that the mid-frequency and high-frequency parts of the speaker are rapidly reduced, the low frequency is more prominent when the speaker is in operation, and there is no superimposition of the frequency response when working with the tweeter, making the sound more natural and clean, and the sense of gradation clear. When the speaker using the annular member 7 is combined with the tweeter to form an in-vehicle sound system, it is possible to avoid the use of the conventional LC circuit low-pass filter (which needs to be installed on the driving circuit board of the sound system). Therefore, the cost is low, the cost performance is higher, and the manufacturing and process operation of the speaker are relatively simple.

[0047] FIG. 4 shows a comparison diagram of the frequency response curves of the conventional speaker and the speaker of this embodiment. As shown in FIG. 4, the dark curve is the frequency response curve of the conventional speaker, and the light curve is the frequency response curve of the speaker of this embodiment. The effective frequency range of the conventional speaker is 50 to 11000 Hz, which is too wide for the woofer, and is disadvantageous for the connection with the tweeter (too many mid-high frequency sounds, resulting in a lot of noise). The effective frequency range of the speaker of this embodiment is 50 to 3000 Hz, and as can be seen from the comparison frequency response curve, by installing the annular member 7, the frequency crossover point is about 3000 Hz, and the excess mid-high frequency of 3000 to 11000 Hz can be effectively filtered out, and the maximum sound pressure around 5500 Hz drops to 15 dB. When filtering using a conventional LC circuit to reduce the sound level by 12 dB, a secondary filter is required, which costs about 3 RMB. The annular component of the speaker in this embodiment costs a maximum of 0.5 RMB, and one speaker can save 2.5 RMB.

[0048] The above-mentioned embodiments are intended to explain the technical concepts and features of the present application, and are preferred embodiments, the purpose of which is to enable those skilled in the art to understand and implement the contents of the present application, and they cannot limit the scope of the claims of the present application. [Explanation of symbols]

[0049] 1 Frame 11 Connection port 12 Solder lug 2 diaphragm 21 Cone body 210 Mounting hole 22 Edge Ring 3 Voice coil 4. Magnetic Circuit System 40 Magnetic gap 41 Front Panel 42 Magnetic steel 43 Rear Panel 5 Dust Cap 6. Damper 7 Annular member

Claims

1. A frame, A diaphragm that is used to vibrate and produce sound and is installed on the frame; A voice coil used to drive the diaphragm to vibrate; a magnetic circuit system used to drive the voice coil to vibrate, the magnetic circuit system being installed on the frame and having a magnetic gap into which a lower end of the voice coil is inserted, The voice coil further includes an annular member disposed at an upper end thereof and connected to the diaphragm, The annular member is placed over an upper end of the voice coil, The diaphragm has a mounting hole, and an upper end of the voice coil is inserted into the mounting hole. A speaker characterized in that the inner surface of the annular member is adhered to the outer surface of the voice coil, and the outer surface of the annular member is adhered to the hole wall of the mounting hole, and the annular member is formed by a hardened adhesive so that the voice coil and the diaphragm do not come into direct contact with each other.

2. The speaker of claim 1 , wherein the annular member is coaxial with the voice coil.

3. The speaker according to claim 1 , further comprising a dustproof cap connected to the diaphragm and covering an upper portion of the mounting hole.

4. A speaker as described in claim 1, characterized in that the adhesive is a silane adhesive.

5. The loudspeaker according to claim 1 , wherein the annular member is a flexible member.

6. 2. The speaker according to claim 1, wherein the annular member has a shape of a hollow cylinder.

7. 7. The speaker according to claim 6, wherein the height of the annular member is 0.5 to 5 mm.

8. The speaker according to claim 1 , wherein the voice coil is connected to the diaphragm by the annular member.

9. 2. The speaker according to claim 1, which is a superwoofer, a woofer or a squawker.

10. 2. The speaker according to claim 1, which is an in-vehicle speaker.

11. An audio system comprising a tweeter and further comprising at least one of a superwoofer, a woofer, and a squawker, 2. An acoustic system, wherein the superwoofer, the woofer, or the squawker is a speaker as defined in claim 1.

12. 12. The audio system of claim 11, which is an in-vehicle audio system.

13. A coaxial speaker including a tweeter unit and a woofer unit, A coaxial speaker, characterized in that the woofer unit employs the speaker according to claim 1.

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