CN211982135U

CN211982135U - Large-amplitude linear loudspeaker with sound basin positioning device

Info

Publication number: CN211982135U
Application number: CN202021128871.9U
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: 2020-11-20
Anticipated expiration: 2030-06-17

Abstract

A large amplitude linear 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 cone positioning ring comprises a fitting edge and an outer folding edge. 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 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

Large-amplitude linear loudspeaker with sound basin positioning device

Technical Field

The utility model belongs to the technical field of audio amplifier equipment, especially a take sound basin positioner's linear speaker of big amplitude.

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 abnormal sound, distortion, 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.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides a can fix a position fast and can guarantee the large-amplitude linear loudspeaker of voice coil loudspeaker voice coil positioner with sound basin's joint strength to satisfy above-mentioned demand.

A large-amplitude linear loudspeaker with a voice cone positioning device comprises a voice coil, a voice 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 voice 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 and an outer folding edge, wherein the joint edge is jointed with the voice coil, and the outer folding edge is connected with the joint edge. 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 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 or a metal material.

Further, the cone locating ring is integrally formed.

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

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

Furthermore, the large-amplitude linear 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.

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.

Further, the fixing glue is phenolic resin.

Compared with the prior art, the utility model provides a take basin positioner's large amplitude linear loudspeaker is because it has set up the sound basin position circle, and this sound basin position circle has laminating limit and the limit of rolling over outward on the cross-section along the center pin of voice coil loudspeaker voice coil, should roll over the extending direction on limit outward with contained angle between the center pin of sound basin position circle is acute angle or right angle, thereby is assembling alright place this sound basin with direct when the sound basin the junction between laminating limit and the limit of rolling over outward realizes the location of this sound basin, has guaranteed the sound basin and can reach the requirement of design with the voice coil loudspeaker voice coil position when batch product to the uniformity of batch product has been guaranteed. When the fixing glue is arranged, the fixing glue is filled between the attaching edge and the voice coil and the voice basin, and the outer folding edge and the voice basin are fixed in a three-in-one mode, so that glue is fixed to the bottom of the shank of the voice basin separated from the centering support piece, the gluing area and the gluing strength of the voice coil and the voice basin are increased, and the reliability of a product is guaranteed.

Drawings

Fig. 1 is a schematic structural view of a large-amplitude linear speaker with a cone positioning device according to the present invention.

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

Fig. 3 is a schematic structural diagram of a cone locating ring of the large amplitude linear speaker with the cone locating device of fig. 1.

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.

As shown in fig. 1 to fig. 3, it is a schematic structural diagram of a large amplitude linear speaker with a cone positioning device provided in the present invention. The large-amplitude linear 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 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 audio 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, and an outwardly folded edge 222 connected to the attaching edge 221. 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 metallic material 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 fixing glue 23 may be polyurethane glue, latex, phenolic resin, etc., which are prior art and will not be described herein. The fixing glue is used for fixing the relative positions of the voice coil 10, the cone positioning ring 22 and the cone 21. In assembling, the positional relationship between the voice coil 10 and the cone yoke 22 is first fixed by gluing. The voice cone 21 is assembled after the voice coil 10 is completely fixed to the voice cone yoke 22. After the position of the cone 21 is fixed, glue is injected between the cone 21 and the attaching edge 221 and between the cone 21 and the folded edge 222, respectively, so as to realize three-in-one fixation among the voice coil 10, the cone 21, and the cone positioning ring 22.

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 positioning 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.

Compared with the prior art, the utility model provides a take basin positioner's large amplitude linear loudspeaker is because it has set up basin position circle 22, and this basin position circle 22 has laminating limit 221 and outer hem 222 on the cross-section along the center pin of voice coil loudspeaker voice coil 10, should outer hem 222 the extending direction with contained angle between the center pin of voice coil loudspeaker voice coil 10 is acute angle or right angle, thereby is assembling alright place this basin 21 with direct when the basin 21 the junction between laminating limit 221 and the outer hem 222 realizes this basin 21's location, has guaranteed basin 21 and voice coil loudspeaker voice coil 22 position so that the requirement of design is reached to the batch product to guarantee the uniformity of batch product. When the fixing glue 23 is arranged, the fixing glue 23 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 to realize three-in-one fixation, so that the bottom of the shank part of the cone separated from the centering branch piece 30 is also fixed by glue, the gluing area and the gluing strength between the voice coil 10 and the cone 21 are increased, and the reliability of the product is ensured.

The above description is only for the preferred embodiment of the present invention and should not be construed as limiting the scope of the present invention, and any modification, equivalent replacement or improvement within the spirit of the present invention is encompassed by the claims of the present invention.

Claims

1. The utility model provides a take sound basin positioner's large amplitude linear loudspeaker which characterized in that: the large-amplitude linear loudspeaker with the voice cone positioning device comprises a voice coil, a voice cone assembly fixedly arranged on the voice coil and a centering support piece fixedly arranged on the voice coil, wherein the voice coil is cylindrical, the voice cone assembly comprises a voice cone, a voice cone positioning ring arranged between the voice cone and the voice coil and fixing glue arranged among the voice coil, the voice cone and the voice cone positioning ring, the voice 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 and an outer folding edge connected with the joint edge, the extending direction of the outer folding edge and the included angle between the central shafts of the voice coil are acute angles or right angles, the free edge of the voice cone abuts against the joint of the joint edge and the outer folding edge, and the fixing glue is filled among the joint edge, the voice coil and the voice cone, and the centering support sheet and the sound cone are arranged at intervals between the outer folded edge and the sound cone.

2. The large amplitude linear loudspeaker with a cone positioning device of claim 1, wherein: the cone positioning ring is made of a non-metal material or a metal material.

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

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

5. The large amplitude linear 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 large amplitude linear loudspeaker with a cone positioning device of claim 1, wherein: the large-amplitude linear 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 large amplitude linear 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. The large amplitude linear loudspeaker with a cone positioning device of claim 1, wherein: the fixing glue is phenolic resin.