Thin loudspeaker

Abstract

A magnetic circuit assembly is installed on a bottom frame, a voice coil is installed on a vibrating diaphragm, two dampers located on the two opposite sides of the magnetic circuit assembly are connected to the vibrating diaphragm through connecting pieces respectively, the dampers are also connected to the bottom frame, and when the magnetic circuit assembly drives the voice coil to move and drives the vibrating diaphragm to vibrate, the vibrating diaphragm drives the two connecting pieces to move. The connecting piece drives the elastic waves to move, so that the elastic waves used for supporting the vibrating diaphragm on the two sides and the connecting piece resonate with the voice coil in the middle, and segmentation vibration can be reduced. The loudspeaker can be applied to the technical field of loudspeakers.

Description

Technical Field

[0001] The utility model relates to the technical field of loudspeakers, in particular to a thin loudspeaker. Background Art

[0002] A loudspeaker is a very commonly used electroacoustic transducer. Audio electrical energy passes through electromagnetism to make its paper cone or diaphragm vibrate and resonate with the surrounding air to emit sound. The thickness of some electronic devices is relatively thin, resulting in a relatively narrow installation space, and a corresponding thin loudspeaker needs to be designed according to the installation space. However, due to factors such as the shape and volume of the thin loudspeaker being mainly considered, the thin loudspeaker is more likely to have the phenomenon of splitting vibration.

[0003] Splitting vibration is due to the diffraction and reflection of various vibration waves formed by the vibration of the diaphragm, forming regular vibration zones at different frequencies, resulting in the situation of splitting vibration. Splitting vibration will cause distortion of sound reproduction and form noise in multiple frequency bands. Content of the Utility Model

[0004] The purpose of the utility model is to provide a thin loudspeaker to solve one or more technical problems in the prior art, and at least provide a beneficial choice or creation condition.

[0005] The technical solution adopted to solve the above technical problems:

[0006] A thin loudspeaker, comprising:

[0007] A chassis;

[0008] A diaphragm, which is arranged on the chassis, and the upper direction relative to the chassis is defined by the position of the diaphragm;

[0009] A magnetic circuit component, which is arranged on the chassis;

[0010] A voice coil, the top of which is connected to the diaphragm;

[0011] A spider, which is arranged on the chassis, and there are at least two spiders, and the two spiders are respectively arranged on two opposite sides of the magnetic circuit component;

[0012] Connectors, there are multiple connectors, each spider is connected to one connector, and the top of the connector is connected to the diaphragm.

[0013] The beneficial effects of the present invention are as follows: the magnetic circuit assembly is mounted on the base frame, the voice coil is mounted on the diaphragm, the two springs located on two opposite sides of the magnetic circuit assembly are respectively connected to the diaphragm through connecting pieces, and the springs are also connected to the base frame; when the magnetic circuit assembly drives the voice coil to move and drives the diaphragm to vibrate, the diaphragm drives the two connecting pieces to move, and the connecting pieces drive the springs to move, thereby causing the springs on both sides for supporting the diaphragm and the connecting pieces to resonate with the voice coil in the middle, which helps to reduce split vibration.

[0014] As a further improvement of the above technical solution, the length of the diaphragm in the horizontal direction is greater than its width, and the two elastic waves are arranged along the length direction of the diaphragm.

[0015] As a further improvement of the above technical solution, the two elastic waves are symmetrically arranged on the periphery of the magnetic circuit assembly with the axis of the voice coil as the center.

[0016] As a further improvement of the above technical solution, with the length direction of the diaphragm as the left and right direction, the structures on the left and right sides of the chassis are symmetrically arranged.

[0017] As a further improvement of the above technical solution, a plurality of reinforcing ribs are provided on the top or bottom of the diaphragm, and the plurality of reinforcing ribs extend in a horizontal direction, and the reinforcing ribs avoid the connecting member and the voice coil.

[0018] As a further improvement of the above technical solution, the plurality of reinforcing ribs form a reinforcing rib grid, and the reinforcing rib grid is symmetrically arranged with the axis of the voice coil as the center.

[0019] As a further improvement of the above technical solution, the connecting member is cylindrical, and two ends of the connecting member are respectively connected to the elastic wave and the diaphragm.

[0020] As a further improvement of the above technical solution, the outer diameter of the voice coil is greater than the outer diameter of the connecting member.

[0021] As a further improvement of the above technical solution, the base frame is provided with at least two concave cavities, the two concave cavities are provided under the two elastic waves in a one-to-one correspondence, and each of the concave cavities is provided with a through hole passing through from top to bottom.

[0022] As a further improvement of the above technical solution, the positions of the through hole and the connecting member are staggered. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0024] Figure 1 This is a structural diagram of an embodiment of the thin speaker provided by the present invention;

[0025] Figure 2This is a cross-sectional schematic diagram of an embodiment of the thin loudspeaker provided by the present invention;

[0026] Figure 3 This is an exploded schematic diagram of an embodiment of the thin speaker provided by the present invention;

[0027] Figure 4 This is an exploded schematic diagram of another angle of an embodiment of the thin loudspeaker provided by the present invention.

[0028] 100, chassis, 110, cavity, 111, through hole, 200, diaphragm, 210, reinforcing rib, 300, magnetic circuit assembly, 310, T iron, 320, main magnet, 330, main washer, 340, auxiliary magnet, 350, auxiliary washer, 400, voice coil, 500, elastic wave, 600, connector. DETAILED DESCRIPTION

[0029] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and overall technical solution of the present invention, but it cannot be understood as a limitation on the scope of protection of the present invention.

[0030] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0031] In the description of the present invention, if there are words such as "several", it means one or more, and "more" means more than two. Greater than, less than, and exceed are understood to exclude the number itself, and above, below, and within are understood to include the number itself.

[0032] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0033] Reference Figures 1 to 4 The thin speaker of the present invention is provided in the following embodiments:

[0034] The thin speaker includes a chassis 100 , a diaphragm 200 , a magnetic circuit assembly 300 , a voice coil 400 , a spider 500 , and a connector 600 .

[0035] The diaphragm 200 is mounted on the top of the base frame 100 . The voice coil 400 , the elastic wave 500 , and the connector 600 are arranged between the diaphragm 200 and the base frame 100 . The magnetic circuit assembly 300 is mounted on the base frame 100 and is located below the diaphragm 200 .

[0036] The top of the voice coil 400 is connected to the bottom of the diaphragm 200 , and the bottom end of the voice coil 400 extends into the magnetic field generated by the magnetic circuit assembly 300 .

[0037] The damper 500 is installed on the base frame 100 . The two dampers 500 are respectively disposed on the left and right sides of the magnetic circuit assembly 300 . Each damper 500 is connected to a connector 600 .

[0038] The bottom of the connecting member 600 is connected to the damper 500 , and the top of the connecting member 600 is connected to the bottom of the diaphragm 200 .

[0039] The magnetic circuit assembly 300 is mounted on the base frame 100, and the voice coil 400 is mounted on the diaphragm 200. The two elastic waves 500 located on opposite sides of the magnetic circuit assembly 300 are respectively connected to the diaphragm 200 through connectors 600, and the elastic waves 500 are also connected to the base frame. When the magnetic circuit assembly 300 drives the voice coil 400 to move and drives the diaphragm 200 to vibrate, the diaphragm 200 drives the two connectors 600 to move, and the connector 600 drives the elastic waves 500 to move, thereby causing the elastic waves 500 and connectors 600 on both sides used to support the diaphragm 200 to resonate with the voice coil 400 in the middle, which helps to reduce split vibration.

[0040] In some embodiments, the length of the diaphragm 200 in the left-right direction is greater than the width in the front-back direction, and the two dampers 500 are arranged along the left-right direction.

[0041] Since the diaphragm 200 is relatively long and the voice coil 400 is relatively far away from the left and right ends of the diaphragm 200, split vibrations are likely to occur on the left and right ends of the diaphragm 200; therefore, two elastic waves 500 are provided in the length direction of the diaphragm 200 to reduce the split vibrations on the left and right sides of the diaphragm 200.

[0042] In some embodiments, the two dampers 500 are symmetrically arranged on the left and right sides of the magnetic circuit assembly 300 with the axis of the voice coil 400 as the center.

[0043] The two dampers 500 are evenly distributed on the left and right sides of the diaphragm 200 , which helps to improve the effect of the dampers 500 and the connector 600 in suppressing the split vibration of the left and right sides of the diaphragm 200 .

[0044] In some embodiments, the structures on the left and right sides of the chassis 100 are symmetrically arranged.

[0045] The chassis 100 is configured to have a left-right symmetric structure, so that the air flow spaces formed between the dome diaphragms 500 evenly distributed on the left and right sides and the chassis 100 are the same. Furthermore, during the vibration of the two dome diaphragms 500 and the two connectors 600 along with the diaphragm 200, the air flows generated by the vibration of the two dome diaphragms 500 are similar, which helps the two dome diaphragms 500 and the voice coil 400 to form resonance.

[0046] In some embodiments, reinforcing ribs 210 are provided at the top or bottom of the diaphragm 200. The plurality of reinforcing ribs 210 extend in the horizontal direction, and the positions of the reinforcing ribs 210 are staggered from the positions of the connectors 600 and the voice coil 400.

[0047] The reinforcing ribs 210 help to improve the stiffness of the diaphragm 200 itself. The reinforcing ribs 210 avoid the voice coil 400 and the connectors 600, preventing the reinforcing ribs 210 from interfering with the vibration of the voice coil 400 and the connectors 600 and preventing the reinforcing ribs 210 from affecting the resonance effect between the two dome diaphragms 500 and the voice coil 400.

[0048] In some embodiments, the plurality of reinforcing ribs 210 are interlaced with each other to form a reinforcing rib grid, and the reinforcing rib grid is symmetrically arranged centered on the axis of the voice coil 400.

[0049] The reinforcing rib grid of the diaphragm 200 is also symmetrically arranged centered on the axis of the voice coil 400, which helps the vibrations on the two opposite sides of the diaphragm 200 to be consistent and reduces the splitting vibration on the two opposite sides of the diaphragm 200.

[0050] In some embodiments, the connector 600 is configured as a cylindrical structure that penetrates in the up-down direction. The bottom end of the connector 600 is connected to the dome diaphragm 500, and the top end of the connector 600 is connected to the diaphragm 200.

[0051] The cylindrical connector 600 helps the air to flow up and down, which is more conducive to the vibration of the left and right ends of the diaphragm 200.

[0052] In some embodiments, the outer diameter of the connector 600 is smaller than the outer diameter of the voice coil 400.

[0053] Since the voice coil 400 is a device that drives the diaphragm 200 to vibrate, and the connector 600 is also indirectly driven by the voice coil 400, the smaller size of the connector 600 helps to respond more quickly to the vibration of the diaphragm 200, enabling the dome diaphragms 500 and the connector 600 to resonate with the voice coil 400 in a shorter time.

[0054] In some embodiments, two concave cavities 110 are provided at the top of the chassis 100. The two dome diaphragms 500 are arranged in one-to-one correspondence above the two concave cavities 110, and each concave cavity 110 is provided with a through hole 111.

[0055] An air flow space is formed between the diaphragm 500 and the concave cavity 110, and the through holes 111 facilitate the discharge of air, so as to reduce the inhibitory effect of the air inside the chassis 100 on the vibration of the diaphragm 500.

[0056] In some embodiments, the positions of the through holes 111 are offset from the positions of the connecting members 600.

[0057] Prevent external air from directly impacting the diaphragm 200 after entering through the through holes 111, causing abnormal vibration.

[0058] Specifically, referring to Figures 1 to 4 As shown, the thin-type speaker includes a chassis 100, a diaphragm 200, a magnetic circuit component 300, a voice coil 400, a diaphragm 500, and a connecting member 600.

[0059] An installation hole for installing the magnetic circuit component 300 is provided in the middle of the chassis 100. The structures on the left and right sides of the chassis 100 are symmetrically arranged with the axis of the installation hole as the center. Two concave cavities 110 are provided at the top of the chassis 100. Two diaphragms 500 are correspondingly arranged above the two concave cavities 110, and two through holes 111 are provided in each concave cavity 110. The two through holes 111 are located on the front and back sides of the center of the concave cavity 110.

[0060] The diaphragm 200 covers the top of the chassis 100. The length of the diaphragm 200 in the left-right direction is greater than the length in the front-back direction. A plurality of reinforcing ribs 210 are provided at the bottom of the diaphragm 200. The plurality of reinforcing ribs 210 extend horizontally and are staggered. After the plurality of reinforcing ribs 210 are staggered, a reinforcing rib grid is formed. Each grid of the reinforcing rib grid is hexagonal. The reinforcing rib grid is symmetrically arranged with the axis of the installation hole as the center.

[0061] A first avoidance hole is provided in the middle of the reinforcing rib grid. Second avoidance holes are respectively provided on the left and right sides of the reinforcing rib grid. The axis of the first avoidance hole coincides with the axis of the installation hole. The axis of the second avoidance hole passes through the center of the concave cavity 110.

[0062] The magnetic circuit component 300 includes a T-iron 310, a main magnet 320, a main washer 330, a sub-magnet 340, and a sub-washer 350.

[0063] The T-iron 310 is located at the bottom. A convex platform protrudes upward in the middle of the T-iron 310. A convex edge protrudes upward at the edge of the T-iron 310. The main magnet 320 is annular. The main magnet 320 is arranged on the top of the convex edge. The main washer 330 is annular. The main washer 330 is arranged on the top of the main magnet 320. The sub-magnet 340 is disc-shaped. The sub-magnet 340 is arranged on the top of the convex platform. The sub-washer 350 is disc-shaped. The sub-washer 350 is arranged on the top of the sub-magnet 340. A magnetic field space is formed between the outer periphery of the sub-magnet 340 and the sub-washer 350 and the outer edge of the main magnet 320 and the main washer 330.

[0064] The voice coil 400 is cylindrical. The top of the voice coil 400 is connected to the first avoidance hole on the bottom surface of the diaphragm 200, and the bottom of the voice coil 400 extends into the magnetic field space.

[0065] Two suspension springs 500 are respectively installed in two concave cavities 110 in one-to-one correspondence.

[0066] An assembly hole is provided in the middle of each suspension spring 500. The connecting member 600 is a cylindrical structure that penetrates up and down. The outer diameter of the connecting member 600 is smaller than the outer diameter of the voice coil 400. The bottom end of a connecting member 600 is installed in the assembly hole of each suspension spring 500, and the top end of the connecting member 600 is connected to the second avoidance hole on the bottom surface of the diaphragm 200.

[0067] Moreover, the two through holes 111 of the concave cavity 110 are respectively located in front of and behind the connecting member 600.

[0068] The suspension spring 500 and the connecting member 600 form a support assembly, and the two support assemblies are symmetrically distributed left and right with the axis of the voice coil 400 as the center.

[0069] The preferred embodiments of the present invention have been specifically described above, but the present invention is not limited to the described embodiments. Those skilled in the art can also make various equivalent variations or substitutions without departing from the spirit of the present invention, and these equivalent variations or substitutions are all included within the scope defined by the claims of this application.

Claims

1. A thin speaker, characterized by: include: chassis; a diaphragm disposed on the base frame, with the position of the diaphragm relative to the base frame being a relative upward direction; a magnetic circuit assembly, which is arranged on the base frame; a voice coil, the top of which is connected to the diaphragm; A spring, which is provided on the base frame, and the springs are at least two, and the two springs are respectively provided on two opposite sides of the magnetic circuit assembly; Connecting member, there are multiple connecting members, each of the elastic waves is connected to one connecting member, and the top of the connecting member is connected to the diaphragm; A plurality of reinforcing ribs are provided on the top or bottom of the diaphragm, and the plurality of reinforcing ribs extend in a horizontal direction, and the reinforcing ribs avoid the connecting member and the voice coil; The plurality of reinforcing ribs form a reinforcing rib grid, and the reinforcing rib grid is symmetrically arranged with the axis of the voice coil as the center.

2. The thin speaker according to claim 1, wherein: The length of the diaphragm in the horizontal direction is greater than its width, and the two elastic waves are arranged along the length direction of the diaphragm.

3. The thin speaker according to claim 2, wherein: The two elastic waves are symmetrically arranged on the periphery of the magnetic circuit component with the axis of the voice coil as the center.

4. The thin speaker according to claim 3, wherein: With the length direction of the diaphragm as the left-right direction, the structures on the left and right sides of the chassis are symmetrically arranged.

5. The thin speaker according to claim 1, wherein: The connecting member is cylindrical, and two ends of the connecting member are respectively connected to the elastic wave and the diaphragm.

6. The thin speaker according to claim 5, characterized in that: The outer diameter of the voice coil is greater than the outer diameter of the connecting member.

7. The thin speaker according to claim 1, wherein: The base frame is provided with at least two concave cavities, and the two concave cavities are provided below the two elastic waves in a one-to-one correspondence, and each of the concave cavities is provided with a through hole passing through from top to bottom.

8. The thin speaker according to claim 7, wherein: The positions of the through hole and the connecting member are staggered.

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