CN109714656B

CN109714656B - Basin stand assembly and sound production device

Info

Publication number: CN109714656B
Application number: CN201811613082.1A
Authority: CN
Inventors: 付扬帆; 刘光磊; 徐增强
Original assignee: Goertek Inc
Current assignee: Goertek Inc
Priority date: 2018-12-27
Filing date: 2018-12-27
Publication date: 2020-05-29
Anticipated expiration: 2038-12-27
Also published as: WO2020134284A1; CN109714656A

Abstract

The invention relates to a basin stand assembly and a sound production device. Wherein basin frame subassembly includes annular basin frame and central basin frame, annular basin frame encloses to close the well plenum chamber that link up from top to bottom that forms, central basin frame is including the bearing part, the bearing part with annular basin frame is connected, the bearing part will well plenum chamber divide into cavity and lower chamber, the bearing part is located one side in the cavity is gone up with being located two surfaces of one side in the lower chamber are configured to the magnet that is used for bearing magnetic circuit respectively.

Description

Basin stand assembly and sound production device

Technical Field

The invention belongs to the technical field of sound-electricity transduction, and particularly relates to a basin stand assembly and a sound generating device.

Background

The loudspeaker is a transducer for converting an electric signal into an acoustic signal, and audio electric energy enables a cone or a diaphragm to vibrate and generate resonance with surrounding air to make sound through electromagnetic, piezoelectric or electrostatic effects. The loudspeaker is the weakest component in the audio equipment, and is the most important component for the audio effect.

The existing loudspeaker usually adopts a washer and a basin stand structure for improving the shape of the magnetic line inside, the washer is usually bonded on the magnet, and the basin stand has the effects of correcting the magnetic line and supporting the magnet, so that the weight of the basin stand occupies a relatively large area, especially in a scene applying a plurality of loudspeakers, the parts of a plurality of basin stands in a plurality of sets of magnetic circuit systems which are really used for improving the magnetic circuit occupy a relatively small area, the magnetic field capacity is not fully utilized, and the lightweight design is not facilitated.

Accordingly, there is a need for an improved frame assembly.

Disclosure of Invention

One object of the present invention is a new solution for a frame assembly.

According to one aspect of the invention, the basin frame assembly comprises an annular basin frame and a central basin frame, wherein the annular basin frame encloses to form a hollow cavity which is communicated up and down, the central basin frame comprises a bearing part, the bearing part is connected with the annular basin frame, the bearing part divides the hollow cavity into an upper cavity and a lower cavity, and the bearing parts are positioned on two surfaces of one side in the upper cavity and one side in the lower cavity and are respectively configured to bear magnets of a magnetic circuit system.

Optionally, at least one through hole is provided on the bearing portion of the central frame, and at least one through hole is configured to accommodate glue to connect the magnets on both sides of the bearing portion.

Optionally, the through holes are symmetrically arranged on the bearing part of the central basin frame.

Optionally, the central frame further comprises a fixing portion, the fixing portion and the bearing portion are respectively located on the inner side and the outer side of the annular frame, and the fixing portion penetrates through the side wall of the annular frame and is fixedly connected with the side wall of the annular frame.

Optionally, a first notch is formed in the side wall of one end face of the annular basin frame, the annular basin frame is clamped on the central basin frame through the first notch, and the fixing portion and the bearing portion are located on two sides of the first notch respectively.

Optionally, the central frame includes a plurality of the fixing portions, and the first notches correspond to the fixing portions one to one.

Optionally, the central frame includes a plurality of the fixed parts, a plurality of the fixed parts with the bearing part fixed connection and a plurality of the fixed parts are arranged symmetrically.

Optionally, a hollow structure is formed between the bearing part of the central frame and the side wall of the annular frame.

Optionally, two second notches are arranged on the side walls of the two end faces of the annular frame, and the second notches are configured for the lead wires of the voice coil to enter or/and exit.

According to another aspect of the invention, the sound production device comprises a shell and two sets of magnetic circuit systems arranged in the shell, wherein the two sets of magnetic circuit systems share the basin frame assembly.

Other features of the present invention and advantages thereof will become apparent from the following detailed description of exemplary embodiments thereof, which proceeds with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.

FIG. 1 is a schematic block diagram of some embodiments of the present invention.

Fig. 2 is an exploded view of the structure of some embodiments of the present invention.

Fig. 3 is an exploded view of alternate embodiments of the present invention.

Fig. 4 is a schematic top view of some embodiments of the invention.

In the figure: 1 annular basin frame, 11 first breach, 12 second breachs, 2 center basin framves, 21 bearing part, 22 fixed parts, 23 through-holes, 3 magnet, 4 magnificents, 5 voice coil loudspeaker voice coils, 51 voice coil loudspeaker voice coil lead wires, 6 first vibrating diaphragm subassemblies, 7 second vibrating diaphragm subassemblies.

Detailed Description

Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.

The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.

Techniques and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail, but are intended to be considered a part of the specification where appropriate.

In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

A frame assembly, in some embodiments, referring to fig. 1-3, is provided that includes an annular frame 1 and a central frame 2. The annular basin frame 1 and the central basin frame 2 are made of magnetic conductive materials and used for correcting a magnetic field and utilizing magnetic field energy to the maximum extent. Furthermore, the annular basin stand 1 can be formed by enclosing a side wall.

The annular basin frame 1 encloses to form a hollow cavity which is communicated up and down. The central frame 2 comprises a carrier 21. The bearing part 21 is located in a hollow cavity of the annular frame 1, is connected with the annular frame 1, and divides the hollow cavity into an upper cavity and a lower cavity which are communicated with the outside through two end faces of the annular frame 1. The bearing part 21 is located on two surfaces of one side in the upper chamber and one side in the lower chamber and is used for bearing the magnets 3 of the magnetic circuit system respectively, namely the surface of the bearing part 21 located on one side in the upper chamber bears one magnet 3, the surface of the bearing part 21 located on one side in the lower chamber also bears one magnet 3, and a magnetic gap of the magnetic circuit system is formed between the magnet 3 and the side wall of the annular frame 1. So that the two sets of magnetic circuit systems can share one basin frame to finish the correction of the magnetic field. In addition, the frame component can almost completely or mostly use the mass for improving and correcting the magnetic field, reduces useless mass and is beneficial to realizing the light-weight design of the loudspeaker.

The basin stand component has simple and compact structure and convenient processing, and the central basin stand 2 can be directly formed by punching a plate; the annular basin frame 1 can be formed by cold cutting a plate into a sheet and then winding the sheet into an annular shape through a die; and assembling and fixing the formed annular basin frame 1 and the central basin frame 2. The fixing modes of the annular basin frame 1 and the central basin frame 2 can adopt modes such as viscose and clamping to be connected and fixed, and compared with welding, the deformation caused by the fact that the formed structure of the annular basin frame is not damaged can be avoided. Of course, in other embodiments, the annular frame 1 and the central frame 2 may be integrally formed, and the present application is not limited thereto.

Further, referring to fig. 1 and 2, the two end faces of the annular frame 1 have the same size and are symmetrically arranged.

Further, referring to fig. 3, the washer 4 can be covered on the surface of the magnet 3 departing from the bearing part 21, the washer 4 does not exceed the end surface of the annular frame 1, and a magnetic gap of the magnetic circuit system is also formed between the washer 4 and the side wall of the annular frame 1.

Further, referring to fig. 3, two voice coils 5 can respectively extend into the magnetic gap from two end surfaces of the annular frame 1 to form a fit, and are respectively connected with the first diaphragm assembly 6 and the second diaphragm assembly 7, so that the loudspeaker applying the present invention can realize double-sided sound production; in the case where only a single voice coil is energized or one voice coil is damaged, it is also possible to generate sound on one side.

Further, two magnets 3 are stacked through the bearing part 21, opposite poles are opposite to each other, and the two magnets attract each other, so that the fixing stability of the bearing part 21 of the two magnets can be improved. On the other hand, the loudspeaker has an effect of enhancing the magnetic field intensity, improves the overall magnetic field intensity, and can effectively improve the acoustic performance of the loudspeaker.

In some embodiments, referring to fig. 1 and 2, the carrying portion 21 of the central frame 2 is provided with at least one through hole 23. When magnet 3 passes through the form of viscose and bears part 21 fixed connection, when the glue coat volume of one side is big, the glue of this side can be held by through-hole 23 under magnet 3's extrusion, transmits for the opposite side for glue distributes evenly relatively, compensates the bonding strength of opposite side. On the other hand, the colloid is contained in at least one through hole 23 to connect the magnets 3 on the two sides of the bearing part 21, the colloid in the through hole 23 can connect the magnets 3 on the two sides of the bearing part 21, and the magnets 3 are directly adhered to the magnets 3, so that the magnets can be better fixed on the bearing part 21.

In some embodiments, referring to fig. 1 and 2, the through-hole 23 may be circular. In other embodiments, the holes may have other shapes, such as square, diamond, etc., and the present invention is not limited thereto.

In some embodiments, referring to fig. 1 and 2, the through holes 23 are symmetrically arranged on the carrying portion 21 of the central frame 2. When there is one through hole 23, the through hole 23 may be provided at a central position of the carrier part 21. Further, the plurality of through holes 23 may be disposed on a center line of the carrier part 21 along a straight line or arranged on the carrier part 21 in a matrix, which is not limited in the present application.

In some embodiments, referring to fig. 1 and 2, the central frame 2 further comprises a fixing portion 22, the fixing portion 22 and the bearing portion 21 are respectively located at the inner side and the outer side of the ring-shaped frame 1 and fixedly connected through the side wall of the ring-shaped frame 1. The fixing portion 22 is located on the outside of the ring frame 1 for fixing frame components, such as the housing of a loudspeaker, etc., in cooperation with external structures. The matching mode can be through structural style such as bonding, hot melt, joint, this application is not restricted to this.

In some embodiments, referring to fig. 1 and 2, a first notch 11 is provided on a side wall of one end face of the ring-shaped frame 1, so that the ring-shaped frame 1 can be clamped on the central frame 2 through the first notch 11, and the first notch 11 on the side wall of the ring-shaped frame 1 makes the fixing part 22 and the bearing part 21 respectively located on the inner side and the outer side of the ring-shaped frame 1. The joint of the fixing portion 22 and the bearing portion 21 passes through the first notch 11. Can be at the contact department rubber coating of central basin frame 2 and first breach 11, with annular basin frame 1 and central basin frame 2 fixed connection, can carry out the rubber coating after detaining annular basin frame 1 on central basin frame 2, also can be the precoating, this application is not the restriction to this. Further, in some embodiments, after the annular frame 1 is fixedly connected with the central frame 2, the defect of the first gap 11 can be filled up through a patch; when the existence of the first notch 11 does not affect the matching between the magnetic circuit system and the voice coil, the first notch may not be filled, and a person skilled in the art may select the first notch as needed, which is not limited in the present application.

In some embodiments, referring to fig. 1 and 2, the central frame 2 includes a plurality of fixing portions 22, and the first notches correspond to the fixing portions 22 one to one.

In some embodiments, the bearing portion 21 and the fixing portion 22 of the central frame 2 may also be separately processed, and after the bearing portion 21 is disposed at the corresponding position of the annular frame 1, the fixing portion 22 is bonded to the bearing portion 21 by passing through the sidewall of the annular frame 1, and at this time, the first notch 11 does not need to be disposed on the annular frame 1, and only a through gap is needed for the fixing portion 22 to pass through. It will be understood by those skilled in the art that this embodiment is also possible in the case where the inclination of the bearing part 21 is avoided in the case where the mounting accuracy can be ensured. Of course, in embodiments where the frame assembly is integrally formed, the fixing portion 22 may also be formed directly on the side wall.

In some embodiments, referring to fig. 1 and 2, the central frame 2 includes a plurality of fixing portions 22, and the fixing portions 22 are fixedly connected to the supporting portion 21 and symmetrically disposed, so that the stress and mass distribution of the whole structure are uniform, and better acoustic performance can be provided.

In some embodiments, referring to fig. 3, the magnet 3 needs to have a gap with the side wall of the annular frame 1 to form a magnetic gap, so that the size of the bearing part 21 can be matched with the size of the magnet 3, the bearing part 21 is only partially connected with the side wall of the annular frame 1, and a hollow structure is formed between the bearing part 21 of the central frame 2 and the side wall of the annular frame 1, so as to better reduce the weight of the frame assembly and correct the magnetic field. On the other hand, the hollow structure can better balance the air pressure on two sides of the bearing part 21, and the acoustic performance of the loudspeaker is improved.

In some embodiments, referring to fig. 1 and 2, the annular frame 1 is provided with two second notches 12 on the side walls of both end faces, the second notches 12 being configured for the entry and/or exit of the voice coil lead 51. Furthermore, the size and the shape of the second notch 12 are based on the condition that the voice coil lead 51 is not in friction contact with the side wall of the annular frame 1 in the vibration process of the voice coil 5, so that the service life of the voice coil lead 51 is prolonged, and the wearing-off is prevented; and the dragging of the voice coil 5 caused by the voice coil lead 51 is also reduced, and the acoustic performance is improved.

According to another aspect of the present invention, the present invention further provides a sound generating device, referring to fig. 3, including a housing and two sets of magnetic circuit systems disposed in the housing, wherein the two sets of magnetic circuit systems share the above-mentioned frame assembly to fix the magnet, so as to form a magnetic circuit.

Further, the sound generating device may be a speaker or other device capable of generating sound.

Although some specific embodiments of the present invention have been described in detail by way of illustration, it should be understood by those skilled in the art that the above illustration is only for the purpose of illustration and is not intended to limit the scope of the invention. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.

Claims

1. A basin frame assembly is characterized by comprising an annular basin frame and a central basin frame, wherein the annular basin frame is enclosed to form a hollow cavity which is communicated up and down, the central basin frame comprises a bearing part, the bearing part is connected with the annular basin frame, the bearing part divides the hollow cavity into an upper cavity and a lower cavity, and the bearing parts are positioned on one side in the upper cavity and two surfaces positioned on one side in the lower cavity and are respectively configured to bear magnets of a magnetic circuit system;

the central frame also comprises fixing parts, the fixing parts and the bearing part are respectively positioned at the inner side and the outer side of the annular frame, the fixing parts penetrate through the side wall of the annular frame and are fixedly connected, the central frame comprises a plurality of fixing parts, the fixing parts are fixedly connected with the bearing part, and the fixing parts are symmetrically arranged; a hollow structure is formed between the bearing part of the central basin frame and the side wall of the annular basin frame.

2. The frame assembly according to claim 1, wherein the carrier portion of the central frame has at least one through hole formed therein, at least one of the through holes being configured to receive glue for connecting the magnets on both sides of the carrier portion.

3. The frame assembly according to claim 2, wherein the through holes are symmetrically disposed on the load-bearing portion of the central frame.

4. The frame assembly according to claim 1, wherein a first notch is formed in a side wall of one end face of the annular frame, and the annular frame is clamped on the central frame through the first notch, so that the fixing part and the bearing part are respectively located on two sides of the first notch.

5. The frame assembly of claim 4, wherein the central frame includes a plurality of the securing portions, the first notches corresponding one-to-one with the securing portions.

6. The frame assembly according to claim 1, wherein two second notches are provided on the side walls of both end faces of the annular frame, the second notches being configured for the entry and/or exit of voice coil leads.

7. A sound producing device, comprising a housing and two sets of magnetic circuit systems arranged in the housing, wherein the two sets of magnetic circuit systems share the basin stand assembly of any one of claims 1 to 6.