CN202395977U - Loudspeaker improved structure - Google Patents

Abstract

An improved structure of loudspeaker is prepared as setting central fixed column in voice coil tube of loudspeaker and setting elastic wave ring between internal edge of voice coil tube and external edge of said fixed column, forming said fixed column by multiple combined units, fixing elastic wave in gap of combined unit of fixed column to make it be combined with said fixed column, locking elastic wave in through hole in fixed column by screw to fix it in loudspeaker. Thus, even when the low-frequency response vibration amplitude is large, the voice coil can still keep vibrating back and forth in the magnetic gap and cannot rub two side walls of the magnetic gap.

Description

Loudspeaker improved structure

technical field

The utility model relates to an improved structure of a loudspeaker, in particular to a loudspeaker structure in which an elastic wave ring is arranged between the inner edge of a voice coil cylinder and the outer edge of a central fixed column in the center of the voice coil cylinder.

Background technique

A loudspeaker is an electro-acoustic transducer that converts electrical energy into sound energy through physical effects. According to the physical effects of different electroacoustic conversions, speakers can be divided into various types, such as electromagnetic speakers, piezoelectric speakers, capacitive speakers, or electrodynamic speakers. Among all kinds of loudspeakers, electric loudspeakers are the mainstream of loudspeaker development and production because of their simple structure, good performance and various types, and are widely used.

The basic structure of the loudspeaker can be divided into three parts: the vibration system, the magnetic circuit system and the auxiliary system according to the different functions of each part. The vibration system mainly includes the voice coil tube, voice coil, high and low frequency diaphragm, etc.; the magnetic circuit system includes permanent magnets, pole pieces and yokes, etc.; the auxiliary system includes the external vibration system and the magnetic circuit system. The frame, the lead wire of the voice coil, the electric coil, etc.

The working principle of the loudspeaker is that the voice coil vibrates back and forth in the magnetic air gap due to the change of the current intensity and the force direction of the voice coil. The period or frequency of the vibration is equal to the period or frequency of the input current, while the amplitude of the vibration is proportional to The strength of each instantaneous action current. Since the high and low frequency diaphragms are fixed on the voice coil barrel, the voice coil on the voice coil barrel can drive the high and low pitch diaphragms to vibrate up and down, and radiate sound waves outward through the vibration of the diaphragm, thereby realizing the conversion between electro-acoustic energy .

Among them, due to the large vibration amplitude of the voice coil tube in the low frequency response, when the voice coil vibrates back and forth in the magnetic air gap, it is easy to produce abnormal sound due to friction on both sides of the magnetic gap. In order to improve this phenomenon, the known The solution is as shown in Fig. 1. A spring wave 27 is provided between the loudspeaker frame 21 and the outer edge of the voice coil tube 25. The setting of the spring wave 27 can effectively assist in fixing the voice coil tube 25, so even at low frequencies When the amplitude of the response vibration is large, the voice coil 26 on the voice coil barrel can still vibrate back and forth in the magnetic gap 224 without rubbing the two side walls of the magnetic gap 224 .

But the shortcoming of known technology is, because this elastic wave 27 is arranged between outer frame 21 and the outer edge of voice coil tube 25, and this elastic wave 27 cannot be too small in design, otherwise it will make its anti-vibration range too small and Affects the low-frequency effect, so in order to install the elastic wave 27, it is necessary to leave a certain space between the outer frame 21 and the voice coil tube 25 as accommodating the elastic wave 27, resulting in the need to increase the outer frame 21 or reduce the sound volume in the speaker design. Make a choice between coil cylinder 25. However, because the size of the voice coil 26 set on the voice coil barrel 25 directly affects the power that the speaker can withstand, the larger the voice coil 26, the greater the power it can withstand. Relatively, the smaller the voice coil 26 The power that can be tolerated is relatively smaller; and the larger the outer frame 21 is, the more it will limit the design or use of the speaker, so the design is faced with a dilemma.

In view of the above-mentioned shortcomings, the creator finally proposed this creation after long-term observation and thinking, as well as repeated tests and experiments.

Contents of the invention

The technical problem to be solved by the utility model is to provide an improved loudspeaker structure for the deficiencies of the above-mentioned prior art. Even when the vibration amplitude of the low-frequency response is relatively large, the voice coil can still vibrate back and forth in the magnetic gap without friction. The walls on both sides of the magnetic gap.

In order to solve the above-mentioned technical problems, the technical solution adopted by the utility model is: an improved loudspeaker structure, which includes an outer frame, a magnetic assembly, a diaphragm, a voice coil tube, a voice coil and an elastic wave, and the outer frame is used as the overall loudspeaker Support; the magnetic component is composed of pole pieces, magnets and yokes; the diaphragm is arranged on the upper part of the outer frame; the voice coil tube is located above the magnetic component, and one end is ring-connected to the lower side of the diaphragm; the The voice coil ring is set on the voice coil tube; its characteristic is: it also includes a central fixing column, which is set at the center of the speaker's improved structure; the elastic wave ring is set on the inner edge of the voice coil tube and the outside of the central fixing column The edges are the same, and are joined with the inner edge of the voice coil cylinder and the outer edge of the central fixed column.

The central fixing column has a through fixing hole inside, and the central fixing column is composed of an upper section assembly, a middle section assembly and a lower section assembly.

The central portion of the diaphragm is provided with a diaphragm through hole, and the central fixing column passes through the diaphragm through hole, so that the diaphragm is crimped to the combination between the upper assembly of the central fixing post and the middle assembly. The gap is combined with the central fixed column; and the center of the elastic wave is provided with an elastic wave through hole, and the central fixed column passes through the elastic wave through hole, so that the elastic wave is crimped on the middle assembly of the central fixed column and The combined gap between the lower assembly parts is combined with the central fixed column.

The improved loudspeaker structure further uses a screw to pass through the outer frame, the yoke, the magnet and the through hole in the center of the pole piece from bottom to top from the lower side and lock into the through fixing hole inside the central fixing column.

The elastic wave and the vibrating membrane are bonded on the central fixed post with glue. The material of the diaphragm is selected from PEI, PEN, PEEK, PI, PET, titanium alloy, aluminum alloy, magnesium alloy, polyester fiber, silk cloth, cotton cloth or PU. The outer frame is made of soft iron, plastic or aluminum, but not limited to these types.

In the improved loudspeaker structure of the present invention, a dust cover can be further provided to prevent dust from falling into the magnetic gap between the pole piece and the yoke.

In the improved speaker structure of the present invention, the voice coil cylinder is surrounded by voice coil wire to form a voice coil. The material of the voice coil wire is not limited, and known metals such as copper and copper-clad aluminum can be used , The cross section of the voice coil wire is generally circular, but it can also have a cross section of different shapes according to different needs. For example, in order to make full use of the space of the magnetic gap, a rectangular cross section can also be used.

In the improved speaker structure of the present invention, the magnets in the magnetic assembly can be made of known materials, such as alnico materials, ferrite materials or rare earth element materials.

In this way, with the improved structure of the above-mentioned loudspeaker, since the elastic wave ring is arranged between the inner edge of the voice coil barrel and the outer edge of the central fixed column, it is possible to improve the arrangement of elastic waves on the outer frame and the outer edge of the voice coil barrel of the known loudspeaker. During this period, it leads to the dilemma that the outer frame needs to be enlarged or the voice coil barrel needs to be reduced, and through the setting of the center fixing column, the elastic wave can be fixed on it, even if the vibration amplitude of the low frequency response is large, the voice coil It can still vibrate back and forth in the magnetic gap without rubbing the two side walls of the magnetic gap.

Description of drawings:

Fig. 1 is a cross-sectional view of a known loudspeaker structure.

Fig. 2 is a sectional view of Embodiment 1 of the improved structure of the loudspeaker of the present invention.

Fig. 3 is a cross-sectional view of another embodiment 2 of the improved loudspeaker structure of the present invention.

Label description:

Frame 21 Magnetic Assembly 22

Pole piece 221 Magnet 222

Yoke 223 Magnetic Gap 224

Center fixed column 23 Diaphragm 24

Voice Coil Tube 25 Voice Coil 26

Spring 27 Through the fixing hole 234

Upper assembly 231 Middle assembly 232

Lower section assembly 233 Diaphragm through hole 241

Spring through hole 271 Screw 31

Through hole 32

Detailed ways:

The utility model will describe the following specific embodiments in more detail, but these embodiments are only used to illustrate the utility model, not to limit the patent scope of the utility model. Those with ordinary knowledge in the technical field of the utility model can modify and change the embodiments discussed below without departing from the spirit or scope of the utility model, and still belong to the scope of the utility model. Hereinafter, the implementation form (embodiment) of this creation will be described in detail with reference to the drawings.

Fig. 2 is a cross-sectional view of Embodiment 1 of the improved structure of the loudspeaker of the present invention.

As shown in Figure 2, the loudspeaker structure includes an outer frame 21, which is used as a support for the overall loudspeaker, and the outer frame 21 is made of soft iron, plastic or aluminum; a magnetic assembly 22, which is composed of a pole piece 221, a magnet 222 and The yoke 223 is formed; the central fixed column 23 is arranged at the center of the improved structure of the loudspeaker; the diaphragm 24 is arranged at the upper part of the outer frame 21; the voice coil tube 25 is located at the top of the magnetic assembly 22, and one end thereof is ring-connected On the lower side of the diaphragm 24; the voice coil 26 is set on the voice coil barrel 25 and placed in the middle of the magnetic gap 224 between the pole piece 221 and the yoke 223; and the elastic wave 27 is set on the ring between the inner edge of the voice coil tube 25 and the outer edge of the central fixing post 23 , and are connected with the central fixing post respectively, such as by glue.

The above-mentioned vibrating film can be glued to the central fixed column, and its material is selected from PEI (polyetherimide), PEN (polyethylene naphthalate), PEEK (polyetheretherketone), PI (polyethylene imide), PET (polyethylene terephthalate), titanium alloy, aluminum alloy, magnesium alloy, polyester fiber (PET fiber), silk cloth, cotton cloth or PU (polyurethane).

In addition, in the improved structure of the loudspeaker of the present invention, a dustproof cover (not shown in the figure) can be further provided to prevent dust from falling into the magnetic gap between the pole piece and the yoke.

When the loudspeaker structure of the present utility model moves, the magnetic field effect is generated by the current flowing into the voice coil 26 and interacts with the magnetic assembly 22 arranged in the loudspeaker, thereby pushing the diaphragm 24 to output high and low sound, and the voice coil 26 will vibrate up and down in the middle of the magnetic gap 224; at this time, the upper edge of one end of the voice coil tube 25 is ring-connected to the lower side of the diaphragm 24, and because the outer edge of the elastic wave 27 is ring-connected to the voice coil The inner edge side of the cylinder 25, and the center part of the elastic wave 27 is ring-connected and fixed to the central fixed column 23 to form a multi-point fixation, so that the voice coil 26 can stably vibrate up and down in the middle of the magnetic gap 224 without rubbing the magnetic gap 224 There are abnormal sounds on both sides of the wall.

Fig. 3 is a cross-sectional view of another embodiment 2 of the improved loudspeaker structure of the present invention, and only the differences from embodiment 1 are described.

Referring to Fig. 3, there is a through fixing hole 234 inside the central fixing column 23, and the central fixing column 23 is composed of an upper assembly 231, a middle assembly 232 and a lower assembly 233; and the center of the diaphragm 24 is provided with a Diaphragm through-hole 241, the central fixing post 23 passes through the diaphragm through-hole 241 so that the diaphragm 24 is crimped on the combination gap between the upper assembly 231 and the middle assembly 232 of the central fixing post 23 and is connected to the center The fixed columns 23 are combined; and the center of the elastic wave 27 is provided with an elastic wave through hole 271, and the central fixed column 23 passes through the elastic wave through hole 271 so that the elastic wave 27 is crimped in the middle section of the central fixed column 23 The combination gap between the assembly 232 and the lower assembly 233 is combined with the central fixing column 23, and then a screw 31 is used to penetrate the outer frame 21, the yoke 223, The through hole 32 in the central part of the magnet 222 and the pole piece 221 is locked into the through fixing hole 234 inside the central fixed column 23, so that the central fixed column 23 can be firmly fixed on the central part of the loudspeaker and fix the elastic wave 27 and Diaphragm 24.

To sum up, in the loudspeaker structure of the present invention, the elastic wave 27 ring is arranged between the inner edge of the voice coil tube 25 and the outer edge of the central fixed column 23, which can improve the arrangement of the elastic wave on the outer frame and the outer frame of the known loudspeaker. The outer edge of the voice coil tube creates a dilemma where the outer frame needs to be enlarged or the voice coil tube needs to be reduced, and the setting of the central fixing column 23 enables the elastic wave 27 to be fixed on it, even in the low frequency response vibration amplitude When it is larger, the voice coil 26 can still vibrate back and forth in the magnetic gap 224 without rubbing the two side walls of the magnetic gap 224, which is a creation with various advantages; a new patent application is filed according to law.

Claims (7)

1. improved structure of loudspeaker, it comprises housing, magnet assembly, vibrating diaphragm, voice coil tube, voice coil loudspeaker voice coil and plays ripple, and this housing is the support of loud speaker as a whole; This magnet assembly is made up of pole piece, magnet and yoke; This vibrating diaphragm is located at this housing top; This voice coil tube is positioned at this magnet assembly top, and the one of which end ring is connected to sidepiece under this vibrating diaphragm; This voice coil loudspeaker voice coil is located on this voice coil tube; It is characterized in that: also comprise the center fixation post, it is located at the central part of improved structure of loudspeaker; Said bullet ripple is located between this voice coil tube inner edge and this center fixation post outer rim same, and engages with this voice coil tube inner edge and this center fixation post outer rim.

2. improved structure of loudspeaker as claimed in claim 1 is characterized in that: said center fixation post inside has the fixing hole of running through, and this center fixation post is made up of epimere sub-assembly, stage casing sub-assembly and hypomere sub-assembly.

3. improved structure of loudspeaker as claimed in claim 2; It is characterized in that: the central part of said vibrating diaphragm is provided with the vibrating diaphragm through hole; This center fixation post runs through this vibrating diaphragm through hole, makes the combinational gap between epimere sub-assembly that this vibrating diaphragm is crimped on this center fixation post and this stage casing sub-assembly and combines with the center fixation post; And the central part of this bullet ripple is provided with and plays the ripple through hole, and this center fixation post runs through this bullet ripple through hole, makes the combinational gap between stage casing sub-assembly that this bullet wave pressure is connected to this center fixation post and this hypomere sub-assembly and combines with the center fixation post.

4. improved structure of loudspeaker as claimed in claim 3 is characterized in that: said improved structure of loudspeaker further with a screw from this its downside run through the through hole of housing, yoke, magnet and pole piece central part from bottom to top respectively and lock this center fixation post inner run through fixing hole.

5. improved structure of loudspeaker as claimed in claim 1 is characterized in that: said bullet involves this vibrating diaphragm and is bonded on this center fixation post with glue.

6. like each described improved structure of loudspeaker in the claim 1 to 5, it is characterized in that: the material of said vibrating diaphragm is selected from PEI, PEN, PEEK, PI, PET, titanium alloy, aluminium alloy, magnesium alloy, polyester fiber, silk cloth, cotton or PU.

7. improved structure of loudspeaker as claimed in claim 6 is characterized in that: said housing is processed by soft iron, plastics or aluminium.

Images