Modularly installed loudspeaker

Abstract

The utility model discloses a modularly installed loudspeaker, which comprises a support, an outer annular magnet, a lower annular magnetic conductive sheet, an inner annular magnet and a vibrating diaphragm, the support is of a hollow cylindrical structure and defines an accommodating cavity, and the support is provided with two conductive terminals and the outer annular magnetic conductive sheet through integral injection molding. The outer annular magnetic conductive sheet and the conductive terminal are arranged in a staggered mode in the Z-axis direction, the lower annular magnetic conductive sheet is arranged on the lower wall of the support, the upper wall of the lower annular magnetic conductive sheet is attached to the lower wall of the outer annular magnetic conductive sheet, a through hole is formed in the middle of the lower annular magnetic conductive sheet, and a tuning net is arranged in the through hole. The inner annular magnet is arranged in the middle of the lower annular magnetic conductive sheet and attached to the upper wall of the lower annular magnetic conductive sheet, the upper annular magnetic conductive sheet is attached to the upper wall of the inner annular magnet, the vibrating diaphragm is installed on the upper wall of the support, an inner cavity is formed in the middle of the inner annular magnet, and a voice coil stretching into a magnetic circuit gap is arranged on the lower wall of the vibrating diaphragm.

Description

Technical Field

[0001] This utility model relates to the field of loudspeakers, and in particular to a modularly mounted loudspeaker. Background Technology

[0002] A loudspeaker is a transducer that converts electrical signals into sound signals, and the performance of a loudspeaker has a great impact on sound quality.

[0003] The speaker mainly consists of a magnetic circuit unit and a driver unit. The magnetic circuit unit accounts for a large proportion of the speaker's volume. In existing speakers, the electrode terminals are generally made by one-piece injection molding. Therefore, the outer ring magnetic conductive sheet of the corresponding magnetic circuit component needs to be injection molded or glued. As a result, the process is more complicated. Regardless of the method, the thickness will increase accordingly (although the size is small, with the miniaturization and compactness of the headphone structure, the 1mm size also limits the product design).

[0004] Therefore, the key to the design is how to achieve modular installation of the speaker while ensuring the stability of sound quality. Utility Model Content

[0005] The main objective of this invention is to propose a modularly mounted loudspeaker, which aims to improve existing loudspeaker assembly schemes, thereby reducing the thickness of the loudspeaker while making it compact, stable, and effectively improving installation efficiency.

[0006] To achieve the above objectives, this utility model proposes a modularly mounted loudspeaker, comprising:

[0007] The bracket has a hollow cylindrical structure that forms a receiving cavity. The bracket is integrally injection molded and has two conductive terminals and an outer annular magnetic sheet.

[0008] The outer annular magnetic conductive sheet and the conductive terminal are offset along the Z-axis direction;

[0009] The outer annular magnetic conductive sheet extends into the receiving cavity;

[0010] An outer ring magnet, wherein the outer ring magnet is located on the lower wall of the outer ring magnetic conductive sheet;

[0011] A lower annular magnetic conductive sheet is disposed on the lower wall of the bracket. The upper wall of the lower annular magnetic conductive sheet is in contact with the lower wall of the outer annular magnet. A through hole is provided in the middle of the lower annular magnetic conductive sheet, and a tuning mesh is provided in the through hole.

[0012] An inner annular magnet is located in the middle of a lower annular magnetic conductive sheet and is attached to the upper wall of the lower annular magnetic conductive sheet. The inner annular magnet has a hole that is opposite to the through hole. The upper annular magnetic conductive sheet is attached to the upper wall of the inner annular magnet.

[0013] A diaphragm is mounted on the upper wall of a support. A magnetic circuit gap is provided between the outer annular magnet and the inner annular magnet. An inner cavity is provided in the middle of the inner annular magnet. A voice coil is provided on the lower wall of the diaphragm, extending into the magnetic circuit gap. The two ends of the voice coil are respectively connected to conductive terminals.

[0014] In practical design, the inner and outer ring magnets share a lower ring magnetic conductive sheet, and a stable magnetic circuit gap is formed by the cooperation of the outer and inner ring magnets respectively.

[0015] When the voice coil is energized, the gap between the voice coil and the magnetic circuit is tangential, which in turn drives the diaphragm to vibrate at a predetermined amplitude, thereby producing a predetermined sound. In this application, the setting of the inner cavity and the tuning mesh can effectively increase the high-frequency vibration amplitude of the diaphragm, thereby improving its sound quality.

[0016] During assembly, the bracket can be used as a fulcrum to assemble the outer ring magnet and the lower ring magnetic sheet, then assemble the inner ring magnet and the upper ring magnetic sheet, and finally install the diaphragm and voice coil to complete the assembly; its structure is simple and stable, and its thickness is smaller. Attached Figure Description

[0017] Figure 1 For the purpose of this utility model explosion Figure 1 ;

[0018] Figure 2 For the purpose of this utility model explosion Figure 2 ;

[0019] Figure 3 This is a cross-sectional view of the present invention;

[0020] Figure 4 This is a schematic diagram of the outer ring magnetic conductive sheet and conductive terminal before injection molding;

[0021] Figure 5 This is a schematic diagram showing the outer ring magnetic conductive sheet and the conductive terminal after integral injection molding.

[0022] Figure 6 This is a top view of the support frame;

[0023] Figure 7 This is a 3D schematic diagram of a flexible PCB board;

[0024] Figure 8 This is a schematic diagram showing the fit between the bracket and the outer ring magnet;

[0025] Figure 9 This is a diagram showing the magnetic pole distribution.

[0026] In the picture,

[0027] 1 is a support frame.

[0028] 2 is the outer ring magnetic sheet, 21 is the lower ring magnetic sheet, and 22 is the upper ring magnetic sheet.

[0029] 31 is an inner ring magnet, and 32 is an outer ring magnet.

[0030] 4 is a through hole, 40 is a tuning mesh.

[0031] 5 represents the diaphragm, and 50 represents the voice coil.

[0032] 61 is a positioning protrusion, and 62 is a positioning groove.

[0033] 71 is the first support arm, 72 is the second support arm, 73 is the first material strip, and 74 is the second material strip.

[0034] 8 represents a notch, 80 represents a flexible PCB board, 81 represents a pin, 82 represents a slot, and 83 represents a clearance hole.

[0035] 9 is a conductive terminal, 91 is an internal terminal, and 92 is an external terminal.

[0036] 100 represents the magnetic circuit gap, and 200 represents the inner cavity. Detailed Implementation

[0037] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0038] It should be noted that if any directional indication (such as up, down, left, right, front, back, top, bottom, inside, outside, vertical, horizontal, longitudinal, counterclockwise, clockwise, circumferential, radial, axial, etc.) is involved in the embodiments of this utility model, the directional indication is only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0039] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," such descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0040] like Figures 1 to 8 As shown, a modularly mounted speaker includes:

[0041] The bracket 1 has a hollow cylindrical structure that forms a receiving cavity. The bracket 1 is integrally injection molded with two conductive terminals 9 and an outer annular magnetic sheet 2.

[0042] The outer annular magnetic conductive sheet 2 and the conductive terminal 9 are offset along the Z-axis direction;

[0043] The outer annular magnetic sheet 2 extends into the receiving cavity;

[0044] An outer ring magnet 32 ​​is disposed on the lower wall of the outer ring magnetic conductive sheet 2;

[0045] The lower annular magnetic conductive sheet 21 is located on the lower wall of the bracket 1. The upper wall of the lower annular magnetic conductive sheet 21 is in contact with the lower wall of the outer annular magnet 32. The middle part of the lower annular magnetic conductive sheet 21 is provided with a through hole 4, and the through hole 4 is provided with a tuning mesh 40.

[0046] An inner annular magnet 31 is located in the middle of the lower annular magnetic conductive sheet 21 and is attached to the upper wall of the lower annular magnetic conductive sheet 21. The inner annular magnet 31 has a hole position opposite to the through hole 4. The upper annular magnetic conductive sheet 22 is attached to the upper wall of the inner annular magnet 31.

[0047] The diaphragm is mounted on the upper wall of the bracket 1. A magnetic circuit gap is provided between the outer annular magnet 32 ​​and the inner annular magnet. An inner cavity is provided in the middle of the inner annular magnet 31. A voice coil 50 (i.e., a magnetic induction coil, which converts a predetermined electrical signal into a predetermined magnetic flux and then intermittently tangents with the magnetic circuit to realize the vibration of the diaphragm) is provided on the lower wall of the diaphragm and extends into the magnetic circuit gap. The two ends of the voice coil 50 are respectively connected to the conductive terminals 9.

[0048] In the actual design, the inner annular magnet 31 and the outer annular magnet 32 ​​share a lower annular magnetic conductive sheet 21, and a stable magnetic circuit gap is formed by the cooperation of the outer annular magnet and the inner annular magnet respectively.

[0049] When the voice coil 50 is energized, the gap between the voice coil and the magnetic circuit is tangential, thereby driving the diaphragm to vibrate at a predetermined amplitude, thereby producing a predetermined sound. In this application, the setting of the inner cavity and the tuning mesh 40 can effectively increase the high-frequency vibration amplitude of the diaphragm, thereby improving its sound quality.

[0050] During the assembly process, the bracket 1 can be used as a fulcrum to assemble the outer ring magnet 32 ​​and the lower ring magnetic sheet 21, then assemble the inner ring magnet 31 and the upper ring magnetic sheet 22, and finally install the diaphragm and voice coil to complete the assembly.

[0051] Its structure is simple and stable, and its thickness is smaller.

[0052] Specifically, the bracket 1 has a positioning protrusion 61 extending downward from the lower wall of the outer annular magnetic sheet 2, and there are two positioning protrusions 61 spaced apart.

[0053] in Figure 3 The sectional view is a sectional view of the non-axial part.

[0054] In this embodiment of the utility model, the outer ring magnet 32 ​​is composed of two half-ring magnets, which are disposed between two positioning protrusions 61, thereby facilitating positioning and installation and effectively ensuring coaxiality.

[0055] Specifically, the lower annular magnetic conductive sheet 21 is provided with a positioning groove 62 that cooperates with the positioning protrusion 61, which further facilitates the positioning and installation of the lower annular magnetic conductive sheet 21.

[0056] In this embodiment of the invention, the outer annular magnetic conductive sheet 2 and the conductive terminal 9 are respectively provided with parallel first support arms 71 and second support arms 72 extending outwards.

[0057] The first support arm 71 and the second support arm 72 are respectively disposed on the first material strip 73 and the second material strip 74 (the two are stacked in the Z-axis direction, thereby realizing the integral injection molding of the conductive terminal 9 and the outer ring magnetic sheet).

[0058] Specifically, the outer annular magnetic conductive sheet 2 has notches 8 extending toward the axis on both sides of the first support arm, and the conductive terminal 9 extends into the notches 8.

[0059] In actual processing, a simple design enabled automated machining of the positioning frame. The magnetic sheet is placed inside the injection mold, and then the bracket 1 is injection molded to enclose the magnetic sheet, thus eliminating assembly steps.

[0060] At the same time, the structural stability and overall thickness of the corresponding bracket 1 are reduced, thereby reducing the thickness of the speaker and improving assembly efficiency while miniaturizing the speaker.

[0061] The extended first support arm is used to realize the integrated movement or transmission of the material strip, thereby enabling rapid injection molding. It can realize automated magnetic sheet feeding, injection molding and unloading, effectively improving production efficiency.

[0062] The bracket 1 and the magnetic ring partially or completely cover each other. For example, the outer peripheral wall of the outer ring magnetic sheet is embedded in the bracket 1, and the inner peripheral wall of the outer ring magnetic sheet is suspended in the bracket 1. Of course, the bracket 1 can also be configured to cover the bottom or top wall of the inner peripheral wall of the outer ring magnetic sheet, thereby meeting the production needs of different loudspeakers.

[0063] After the bracket 1 is integrally formed with the conductive terminal 9 and the magnetic ring, the first support arm and the second support arm are cut off, thereby separating the bracket 1 from the first material strip 73 and the second material strip 74, thus realizing the installation of the bracket 1.

[0064] In this embodiment of the utility model, the conductive terminal 9 includes an inner terminal and an outer terminal that is bent and extends from the outer end of the inner terminal, and the second support arm extends outward from the direction of the inner terminal.

[0065] Specifically, the lower wall of the lower annular magnetic sheet is provided with a flexible PCB board 80 (i.e., FPC). The flexible PCB board 80 includes a main body and pins 81. The main body is located on the lower wall of the lower annular magnetic sheet, and the pins 81 extend to the position of the external terminal and are electrically connected to the external terminal.

[0066] In this embodiment of the utility model, the pin 81 is provided with a locking hole 82, and the external terminal extends into the locking hole 82 and is fixed by solder.

[0067] Specifically, a clearance hole 83 is provided between the main body and the pin 81. The clearance hole is used for the positioning protrusion 61 to extend, which effectively facilitates the installation of the speaker. During the installation, the flexible PCB board 80 can be directly connected to the control panel (which is generally equipped with a chip), thereby improving the assembly efficiency.

[0068] Meanwhile, the design of the ventilation holes can also reduce the stress on the flexible PCB board when the speaker vibrates (i.e., the difference between full attachment and non-full attachment).

[0069] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A modularly mounted loudspeaker characterized by, The utility model relates to a loudspeaker, including: Support, the support is hollow cylinder structure and encloses the cavity that contains, the support integrative injection molding has two conductive terminal and outer annular magnetic sheet, The outer annular magnetic sheet and conductive terminal are misaligned along the direction of Z axle, The outer annular magnetic sheet part extends into the cavity, The outer annular magnet is arranged at the lower wall of the outer annular magnetic sheet, The lower annular magnetic sheet is arranged at the lower wall of the support, the upper wall of the lower annular magnetic sheet is attached to the lower wall of the outer annular magnet, a through hole is arranged in the middle of the lower annular magnetic sheet, and a tuning net is arranged in the through hole, The inner annular magnet is arranged in the middle of the lower annular magnetic sheet and attached to the upper wall of the lower annular magnetic sheet, a hole is arranged in the inner annular magnet opposite to the through hole, and the upper wall of the inner annular magnet is attached to the upper annular magnetic sheet, The diaphragm is arranged at the upper wall of the support, a magnetic gap is arranged between the outer annular magnet and the inner annular magnet, an inner cavity is arranged in the middle of the inner annular magnet, and a voice coil is arranged in the magnetic gap and connected to the conductive terminal.

2. The modularly mounted loudspeaker of claim 1, wherein: The support is arranged with positioning protrusions extending downward from the lower wall of the outer annular magnetic sheet, the positioning protrusions are arranged in pairs and spaced apart.

3. The modularly mounted loudspeaker of claim 2, wherein: The outer annular magnet is composed of two half-ring magnets, and the half-ring magnets are arranged between the two positioning protrusions.

4. The modularly mounted loudspeaker of claim 2, wherein: The lower annular magnetic sheet is arranged with positioning grooves matched with the positioning protrusions.

5. The modularly mounted loudspeaker of claim 2, wherein: The outer annular magnetic sheet and the conductive terminal are respectively arranged with first and second support arms arranged in parallel, The first and second support arms are arranged in the first and second material belts respectively.

6. The modularly mounted loudspeaker of claim 5, wherein: The outer annular magnetic sheet is arranged with notches extending towards the axial center on both sides of the first support arm, and the conductive terminal partially extends into the notches.

7. The modularly mounted loudspeaker of claim 6, wherein: The conductive terminal includes an inner terminal and an outer terminal bent and extended from the outer side of the inner terminal, and the second support arm extends outward from the inner terminal.

8. The modularly mounted loudspeaker of claim 7, wherein: The lower wall of the lower annular magnetic sheet is arranged with a flexible PCB, and the flexible PCB includes a main body and a pin, the main body is arranged at the lower wall of the lower annular magnetic sheet, and the pin extends to the position of the outer terminal and is electrically connected to the outer terminal.

9. The modularly mounted loudspeaker of claim 8, wherein: The pin is arranged with a clamping hole, and the outer terminal extends into the clamping hole and is fixed by soldering.

10. The modularly mounted loudspeaker of claim 9, wherein: The main body and the pin are arranged with an empty hole, and the empty hole is used for the positioning protrusion to extend out.

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