CN111770419B

CN111770419B - Loudspeaker with sound basin positioning device and manufacturing method thereof

Info

Publication number: CN111770419B
Application number: CN202010553228.9A
Authority: CN
Inventors: 陈健
Original assignee: Speaker Electronic Jiashan Co Ltd
Current assignee: Speaker Electronic Jiashan Co Ltd
Priority date: 2020-06-17
Filing date: 2020-06-17
Publication date: 2021-08-31
Anticipated expiration: 2040-06-17
Also published as: CN111770419A

Abstract

A loudspeaker with a cone positioning device comprises a voice coil, a cone assembly and a centering support piece. The cone component comprises a cone, a cone positioning ring and fixing glue. The sound cone positioning ring comprises a fitting edge, an outer folded edge and a glue seepage hole. And an included angle between the extending direction of the outer folded edge and the central shaft of the voice coil is an acute angle or a right angle. The free edge of the sound basin is abutted against the joint of the attaching edge and the outward folded edge, and the fixing glue penetrates through the glue permeating hole and is filled between the attaching edge and the voice coil and between the attaching edge and the sound basin as well as between the outward folded edge and the sound basin. The centering support piece and the sound basin are arranged at intervals. The loudspeaker ensures that batch products of the sound cone and the voice coil reach the design requirement and ensures the consistency of the batch products. Meanwhile, the gluing area and the gluing strength are increased, and the reliability of the product is ensured.

Description

Loudspeaker with sound basin positioning device and manufacturing method thereof

Technical Field

The invention belongs to the technical field of sound box equipment, and particularly relates to a loudspeaker with a sound basin positioning device and a manufacturing method thereof.

Background

The speaker is actually able to produce sound waves by the piston movement of the diaphragm, which is created by the interaction of the voice coil and the driver magnet. When sound passes through the voice coil in the form of current, a correspondingly changed electromagnetic field is generated according to the strength and frequency of the current, and the direction of the electromagnetic field is determined according to Faraday's right-hand law. The magnetism of the voice coil is changed continuously along with the change of the current and is interacted with the permanent magnet to generate vibration, so that the vibrating diaphragm is driven to do piston motion, and then sounds with different frequencies and strengths are generated.

For a large-amplitude bass loudspeaker, because the large-amplitude bass loudspeaker works in an ultra-low frequency band, the large-amplitude bass loudspeaker has the following design characteristics: firstly, the voice coil is usually designed to have an ultra-long scroll, and secondly, in order to ensure enough vibration space, the voice coil is usually designed to be very high, namely, the axial length is relatively large. And because the coil that is located the latter half of voice coil loudspeaker voice coil is heavier, and sound cone and centring disk and voice coil loudspeaker voice coil combination are located its upper half, just so cause the heavy light phenomenon of foot of head very easily, lead to the speaker to get into when certain frequency and sway the mode and cause distortion, abnormal sound, the condition that can even appear destroying.

It is a common improvement to separate the attachment locations of the spider and cone to the voice coil, and to provide multiple joints of two or more vibration assemblies with the voice coil to make the overall vibration system more stable at high amplitudes. Because the suspension edge of the cone is made of soft elastomer material, the position of the tibia part of the cone fixed on the voice coil cannot be rapidly and effectively controlled in the production process, so that the upward or downward deformation of the cone edge can be caused, the symmetry of the internal and external stiffness coefficients of the whole vibration system is influenced, and the DC offset and the increase of low-frequency distortion of the vibration system are caused in the action and movement process of the driving force.

Disclosure of Invention

In view of the above, the present invention provides a speaker with a cone positioning device, which can quickly position and enhance the bonding strength between the cone and the voice coil, and a manufacturing method thereof, so as to satisfy the above requirements.

A loudspeaker with a sound cone positioning device comprises a voice coil, a sound cone assembly fixedly arranged on the voice coil and a centering support piece fixedly arranged on the voice coil. The voice coil is cylindrical. The voice cone assembly comprises a voice cone, a voice cone positioning ring and fixing glue, wherein the voice cone positioning ring is arranged between the voice cone and the voice coil, and the fixing glue is arranged among the voice coil, the voice cone and the voice cone positioning ring. The edge on the cross-section of the center pin of voice coil loudspeaker voice coil the sound basin position circle be an L shape structure and include one with the laminating limit that the voice coil loudspeaker voice coil laminated mutually, one with this laminating limit continuous outer hem limit, and set up the laminating limit is in oozing gluey hole on the hem. And an included angle between the extending direction of the outer folded edge and the central shaft of the voice coil is an acute angle or a right angle. The free edge of the sound basin is abutted against the joint of the attaching edge and the outward folded edge, and the fixing glue penetrates through the glue permeating hole and is filled between the attaching edge and the voice coil and between the attaching edge and the sound basin as well as between the outward folded edge and the sound basin. The centering support piece and the sound basin are arranged at intervals.

Further, the cone locating ring is made of a non-metal material.

Further, the cone locating ring is integrally formed.

Further, the minimum diameter of the cone is larger than the diameter of the cone locating ring, so that a gap is formed between the free edge of the cone and the cone locating ring.

Further, the fixing glue is filled between the cone positioning ring and the free edge of the cone.

Furthermore, the loudspeaker with the sound cone positioning device also comprises a cone frame, and the other free end of the sound cone is fixed on the cone frame.

Furthermore, one free end of the centering branch piece is adhered to the voice ring, and the other free end of the centering branch piece is fixed on the basin frame.

A manufacturing method of a loudspeaker with a cone positioning device comprises the following steps:

providing a voice coil, a centering disk and a base for positioning the voice coil;

fixing the voice coil on the base and fixing the centering support piece on the outer side of the voice coil;

providing fixing glue, coating a layer of primer on the outer side wall of the voice coil, and arranging the position of the primer and the position of the centering support at intervals;

providing a cone positioning ring, wherein the cone positioning ring is of an L-shaped structure on the section along the central shaft of the voice coil and comprises a joint edge jointed with the voice coil, an outward-folded edge connected with the joint edge, and glue seepage holes arranged on the joint edge and the outward-folded edge, and the cone positioning ring is sleeved on the voice coil;

providing a positioning fixture, wherein the positioning fixture is sleeved between the base and the attaching edge of the cone positioning ring, a free end of the positioning fixture abuts against the outer folded edge, and the positioning fixture is pressed downwards to enable the attaching edge of the cone positioning ring to reach the designated position;

providing a cone, and mounting the cone on the cone positioning ring;

glue is injected between the attaching edge and the sound cone, and the attaching edge, the voice coil and the sound cone and the outer folding edge and the sound cone are filled with the fixing glue by the glue injection amount.

Further, the position of coating the base glue is the position of installing the cone positioning ring.

Further, the glue is filled between the outer folding edge and the sound cone and between the outer folding edge and the voice coil under the action of gravity and capillary phenomenon through the glue permeating holes.

Compared with the prior art, the loudspeaker with the sound cone positioning device is provided with the sound cone positioning ring, the sound cone positioning ring is provided with the attaching edge and the outward folding edge on the section along the central shaft of the voice coil, and the included angle between the extending direction of the outward folding edge and the central shaft of the sound cone positioning ring is an acute angle or a right angle, so that the sound cone can be directly placed at the connecting part between the attaching edge and the outward folding edge when the sound cone is assembled, the positioning of the sound cone is realized, the batch products at the positions of the sound cone and the voice coil can meet the design requirements, and the consistency of the batch products is ensured. Simultaneously because have on the sound basin position circle ooze the gluey hole, work as when carrying out the injecting glue between the laminating limit of sound basin and sound basin position circle, glue can further permeate into between laminating limit and the voice coil loudspeaker voice coil, still can permeate into sound basin and outer hem simultaneously to and between outer hem and the voice coil loudspeaker voice coil, thereby realize between laminating limit and voice coil loudspeaker voice coil and the sound basin, and three between outer hem and the sound basin are fixed, make also have glue fixed with the sound basin shank bottom of centering support piece separation, increased the veneer area to and the bonding strength of voice coil loudspeaker voice coil and sound basin, guaranteed the reliability of product.

Drawings

Fig. 1 is a schematic structural diagram of a speaker with a cone positioning device according to the present invention.

Fig. 2 is a partially enlarged schematic structural view of the loudspeaker with the cone positioning device of fig. 1 at a.

Fig. 3 is a schematic structural view of a cone positioning ring of the speaker with the cone positioning device of fig. 1.

Fig. 4 to 7 are state diagrams of the process flow of the speaker with the cone positioning device of fig. 1 at various stages.

Detailed Description

Specific examples of the present invention will be described in further detail below. It should be understood that the description herein of embodiments of the invention is not intended to limit the scope of the invention.

Fig. 1 to fig. 3 are schematic structural views of a speaker with a cone positioning device according to the present invention. The loudspeaker with the cone positioning device comprises a voice coil 10, a cone assembly 20 fixedly arranged on the voice coil 10, a centering support sheet 30 fixedly arranged on the voice coil 30, and a cone frame 40 used for fixing the cone assembly 20 and the centering support sheet 30. It is contemplated that the speaker may be a speaker having common functional modules, such as assembly components, mounting components, magnetic circuits, T-iron or U-iron, electrical connection components, etc., which are well known to those skilled in the art and will not be described herein.

Note that the chain line in fig. 1 and fig. 4 to 7 is a central axis of an axisymmetric pattern, which is common knowledge in mechanical drawing and will not be described in detail here.

The voice coil 10 is a coil for passing an alternating current, and is an important component of an electrodynamic loudspeaker vibration system, and mainly includes a voice coil bobbin, an enameled wire, a reinforcing paper, and a silk thread.

The cone assembly 20 includes a cone 21, a cone collar 22 disposed between the cone 21 and the voice coil 10, and a fixing paste 23 disposed between the voice coil 10, the cone 21, and the cone collar 22. The cone 21 itself is a prior art, which is also called cone paper, and is one of the important components of a loudspeaker. In operation, when an audio signal is input to the speaker, the voice coil 10 vibrates in the magnetic field, and the cone 21 vibrates with the voice coil 10 fixed to the cone 21. The vibration of the cone 21 forces the air to resonate as well, thereby producing sound. The cone positioning ring 22 is fixedly arranged on the outer side of the voice coil 10, and the specific position thereof is set according to actual requirements. The position of the cone collar 22 determines the position of the cone 21, and therefore the position of the cone collar 22 is very important. The cone positioning ring 22 has an L-shaped cross section along the central axis of the voice coil 10, and includes an attaching edge 221 attached to the voice coil 10, an outward-folded edge 222 connected to the attaching edge 221, and glue-permeating holes 223 formed in the attaching edge 221 and the outward-folded edge 222. The widths of the attaching edge 221 and the folded edge 222 are based on the weight and force of the sound cone 21. The cone retainer 22 may be made of a non-metallic material or a metal and may be integrally formed, such as injection molding. The attaching edge 221 is fixed on the voice coil 21 by glue, and is used for bearing the cone 21 and the outward folded edge 222. The extending direction of the outer folded edge 222 forms an acute angle or a right angle with the central axis of the voice coil 10, thereby forming a corner. This corner is intended to abut against or to rest on a free end of the cone 21, so as to achieve the positioning of the cone 21 and at the same time facilitate the holding of glue. The glue permeating holes 223 are formed in the attaching edge 221 and the outer folding edge 222 and are used for allowing glue to pass through. Therefore, the diameter of the glue penetration hole 223 should be selected according to the kind of glue, such as viscosity, drying speed, etc., and in short, the glue penetration hole 223 should enable the glue to be filled between the attaching edge 221 and the voice coil 10 and the cone 21, and between the outer folding edge 222 and the cone 21 before curing.

The fixing glue 23 may be polyurethane glue, latex, phenolic resin, etc., which are prior art and will not be described herein. The fixing glue 23 is used for fixing the relative positions of the voice coil 10, the cone fixing ring 22 and the cone 21. During glue injection, glue can be injected between the attaching edge 221 of the cone fixing ring 22 and the cone 21, and during glue injection, the glue can reach between the attaching edge 221 and the voice coil 10 through the glue permeating hole 223 under the action of gravity and capillary phenomenon, and meanwhile, the glue can also reach between the cone 21 and the folded edge 222 under the coordination of surface tension. In order to make the glue more smoothly reach between the cone 21 and the folded-out edge 222, the minimum diameter of the cone 21 is larger than the diameter of the attaching edge 221 of the cone positioning ring 22 so that a gap is formed between the free edge of the cone 21 and the attaching edge 221 of the cone positioning ring 22. So that the fixing glue 23 can also fill in between the cone collar 22 and the free edge of the cone 21.

The centering buttresses 30, also called spider, serve to maintain the correct position of the voice coil 10 in the magnetic gap, i.e. to keep the vibration system reciprocating only in the axial direction when the voice coil is subjected to a force, while preventing dust from entering the magnetic gap. The centering branch pieces 30 may be made of cotton cloth, silk, and chemical fiber. The spider 30 is per se prior art and is fixed at one end to the voice coil 10 by glue. The centering support 30 is spaced apart from the cone 21 and the cone fixing ring 22, so that the voice coil 10 can move more stably.

The basin frame 40 mainly functions to support the sound basin 21, the centering branch piece 30, and install other functional modules, such as magnets and binding posts, which are the prior art and are not described herein again.

As shown in fig. 4 to 7, the present invention further provides a method for manufacturing a speaker with a cone retainer, which includes the following steps:

s1: providing a voice coil 10, a centering pad 30, and a base 50 for positioning said voice coil 10;

s2: fixing the voice coil 10 on the base 50 and fixing the centering leg 30 on the outer side of the voice coil 10, as shown in fig. 4;

s3: providing a fixing glue 30, coating a layer of primer on the outer side wall of the voice coil 10, wherein the position of the primer is spaced from the position of the centering branch piece 30, as shown in fig. 5;

s4: providing a cone positioning ring 22, wherein the cone positioning ring 22 is of an L-shaped structure on a section along the central axis of the voice coil 10 and comprises a joint edge 221 jointed with the voice coil 10, an outward-folded edge 222 connected with the joint edge 221, and glue permeation holes 223 arranged on the joint edge 221 and the outward-folded edge 222, and the cone positioning ring 22 is sleeved on the voice coil 10;

s5: providing a positioning fixture 60, wherein the positioning fixture 60 is sleeved between the base 50 and the attaching edge 221 of the cone positioning ring 22, a free end of the positioning fixture 60 abuts against the outer folding edge 222, and the positioning fixture 60 is pressed downwards to enable the attaching edge 222 of the cone positioning ring 22 to reach the designated position, as shown in fig. 6;

s6, providing a frame 40, fixing the position of the frame 40, and fixing the centering support 30 on the frame 40, as shown in FIG. 7;

s7: providing a cone 21, mounting one free end of the cone 21 on the cone positioning ring 22, and fixing the other free end on the basin frame 40, thereby fixing the relative position of the cone 21, as shown in fig. 7;

s8: glue is injected between the attaching edge 221 and the cone 21 by an amount that the fixing glue 30 is filled between the attaching edge 221 and the voice coil 10 and the cone 21, and between the outer folding edge 222 and the cone 21, as shown in fig. 1.

In step S1, the base 50 is a prior art, and may be a cylindrical structure, and the voice coil 10 is sleeved on the base 50.

In step S2, the stiffener 30 is fixed by glue. The position of the centering buttresses 30 should be set according to design requirements.

In step S3, the glue is applied for the purpose of pre-fixing the cone collar 22 to facilitate placement of the cone 21, i.e., the primer is applied at the position where the cone collar 22 is mounted.

In step S5, the positioning jig 60 has two positioning surfaces in a cross section along the center axis of the voice coil 10, i.e., a first positioning surface 61 contacting the base 50 and a second positioning surface 62 contacting the folded-out edge 222. When the first positioning surface 61 contacts the base 50, the second positioning surface 62 is located. Thereby positioning the position of the cone locating ring 22 during the pressing of the locating clip 60.

In step S7, by positioning the sound cone 21 and the cone frame 40, a certain space may be left between the other free end of the sound cone 21 and the sound cone fixing ring 22 to facilitate the smooth passage of glue, i.e., the glue fills between the outer folded edge 222 and the sound cone 21 under the action of gravity through the glue penetration hole 223.

Compared with the prior art, the loudspeaker with the cone positioning device provided by the invention is provided with the cone positioning ring 22, the cross section of the cone positioning ring 22 along the central axis of the voice coil 10 is provided with the attaching edge 221 and the outward folding edge 222, and the extending direction of the outward folding edge 222 and the central axis of the voice coil 10 form an acute angle or a right angle, so that the cone 21 can be directly placed at the connecting part between the attaching edge 221 and the outward folding edge 222 when the cone 21 is assembled, the positioning of the cone 21 is realized, the positions of the cone 21 and the voice coil 22 are ensured, so that the batch product meets the design requirement, and the consistency of the batch product is ensured. Meanwhile, as the cone positioning ring 22 is provided with the glue permeating hole 223, when glue is injected between the attaching edge 221 of the cone 21 and the cone positioning ring 22, the glue can further permeate between the attaching edge 221 and the voice coil 10, and can also permeate between the cone 21 and the outer folded edge 222, and between the outer folded edge 222 and the voice coil 10, so that three fixing positions between the attaching edge 221 and the voice coil 10 and between the voice coil 21, and between the outer folded edge 222 and the cone 21 are realized, the bottom of the shank of the cone separated from the centering support sheet 30 is also fixed by the glue, the gluing area and the gluing strength between the voice coil 10 and the voice coil 21 are increased, and the reliability of the product is ensured.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the scope of the present invention, and any modifications, equivalents or improvements that are within the spirit of the present invention are intended to be covered by the following claims.

Claims

1. The utility model provides a take loudspeaker of sound basin positioner which characterized in that: the loudspeaker with the voice coil positioning device comprises a voice coil, a voice coil assembly fixedly arranged on the voice coil and a centering support piece fixedly arranged on the voice coil, wherein the voice coil is in a cylindrical shape, the voice coil assembly comprises a voice coil, a voice coil positioning ring arranged between the voice coil and fixing glue arranged between the voice coil, the voice coil and the voice coil positioning ring, the voice coil positioning ring is of an L-shaped structure on the section along the central shaft of the voice coil and comprises a laminating edge laminated with the voice coil, an outward bending edge connected with the laminating edge and glue seepage holes arranged on the laminating edge and the outward bending edge, the extending direction of the outward bending edge and the included angle between the central shaft of the voice coil are acute angles or right angles, the free edge of the voice coil is abutted against the joint of the laminating edge and the outward bending edge, the fixed glue penetrates through the glue permeating holes and is filled between the attaching edge and the voice coil and between the attaching edge and the voice cone as well as between the outer folding edge and the voice cone, and the centering support piece and the voice cone are arranged at intervals.

2. The loudspeaker with a cone positioning device of claim 1, wherein: the cone positioning ring is made of non-metal materials.

3. The loudspeaker with a cone positioning device of claim 1, wherein: the cone locating ring is integrally formed.

4. The loudspeaker with a cone positioning device of claim 1, wherein: the minimum diameter of the cone is larger than the diameter of the cone positioning ring, so that a gap is formed between the free edge of the cone and the cone positioning ring.

5. The loudspeaker with a cone positioning device of claim 4, wherein: the fixing glue is filled between the cone positioning ring and the free edge of the cone.

6. The loudspeaker with a cone positioning device of claim 1, wherein: the loudspeaker with the sound cone positioning device further comprises a cone frame, and the other free end of the sound cone is fixed on the cone frame.

7. The loudspeaker with a cone positioning device of claim 6, wherein: one free end of the centering support sheet is adhered to the voice ring, and the other free end of the centering support sheet is fixed on the basin frame.

8. A manufacturing method of a loudspeaker with a cone positioning device comprises the following steps:

providing a basin stand, fixing the position of the basin stand, and fixing the centering support piece on the basin stand; providing a cone, mounting one free end of the cone on the cone positioning ring, and fixing the other free end on the cone frame to fix the relative position of the cone;

9. The method of manufacturing a loudspeaker with a cone positioning device as claimed in claim 8, wherein: the position of the coating primer is the position of installing the cone positioning ring.

10. The method of manufacturing a loudspeaker with a cone positioning device as claimed in claim 8, wherein: and the glue is filled between the outer folded edge and the voice coil wall and between the sound basin and the outer folded edge under the action of gravity and capillarity through the glue permeating holes.