CN206775730U - A kind of loudspeaker and audio amplifier - Google Patents

Abstract

The utility model embodiment belongs to speaker technology field, is related to a kind of loudspeaker and audio amplifier；The loudspeaker includes support, magnet steel, washer, frame, drum paper, dust cap, bullet ripple and voice coil loudspeaker voice coil, wherein, the bullet ripple connects frame and drum paper respectively, the outer rim for playing ripple connects the inwall of the frame, the mesopore for playing ripple connects the bulging paper centrum inner surface, and the audio amplifier includes foregoing loudspeaker；The height for the loudspeaker that the utility model embodiment provides is lower compared to conventional loudspeakers so that the thickness using the audio amplifier of the loudspeaker is accordingly thinning, lifts the portable experience of audio amplifier.

Description

Loudspeaker and sound box

Technical Field

The embodiment of the utility model provides a belong to speaker technical field, especially relate to a speaker and audio amplifier.

Background

The existing small-sized sound box, especially the portable sound box, adopts a single speaker with a slightly large size as a full-frequency speaker in design, so that a higher sound pressure level can be obtained at a low cost, and the high-pitch cost can be saved.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem that the speaker height is higher to result in audio amplifier thickness too big among the prior art, the embodiment of the utility model provides a speaker with novel structure to and the audio amplifier of adopting this kind of speaker, the embodiment of the utility model provides a following technical scheme is specifically adopted.

In a first aspect, the embodiment of the utility model provides a loudspeaker, including support, magnet steel, china department, basin frame, drum paper, dustproof cap, bullet ripples and voice coil loudspeaker voice coil, wherein, basin frame and drum paper are connected respectively to the bullet ripples, the outer fringe of bullet ripples is connected the inner wall of basin frame, the mesopore of bullet ripples is connected drum paper centrum internal surface.

Further, the drum paper and the elastic wave are attached in an adhesive mode.

Further, the elastic wave is a corrugated damping plate or a butterfly damping plate or a rubber damping plate.

Further, the damper includes a plurality of corrugated damping plates.

In a second aspect, an embodiment of the present invention provides an audio amplifier, where the audio amplifier includes the above speaker.

According to the loudspeaker provided by the embodiment of the utility model, the elastic wave is respectively connected with the basin frame and the drum paper, on one hand, the voice coil does not need to provide a connecting position to connect the elastic wave, so that the length of the voice coil can be reduced, and the cost is saved; on the other hand, the distance from the binding surface of the frame and the drum paper to the binding surface of the elastic wave and the frame can be reduced, so that the height of the loudspeaker is reduced; and adopt the utility model provides a but the audio amplifier of speaker can correspondingly reduce audio amplifier thickness, promotes the portable experience of audio amplifier.

Drawings

In order to illustrate the present invention or the prior art more clearly, the drawings needed for the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a sectional view showing a structure of a conventional speaker;

fig. 2 is a cross-sectional view of a speaker according to an embodiment of the present invention;

fig. 3 is a graph comparing the SPL (sound pressure level) curves of the speaker provided by the embodiment of the present invention and the conventional speaker.

Detailed Description

In order to make the technical field person understand the scheme of the present invention better, the following will combine the drawings in the embodiments of the present invention to clearly and completely describe the technical scheme in the embodiments of the present invention. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The terms "including" and "having," and any variations thereof, in the description and claims of this invention and the above-described drawings are intended to cover non-exclusive inclusions. Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the invention. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.

Referring to fig. 1, which is a cross-sectional view of a conventional speaker structure, it can be seen that the conventional speaker includes a bracket 1, a magnetic steel 2, a washer 3, a frame 4, a drum paper 5, a dust cap 6, a damper 7, and a voice coil 8, and further it can be seen that the damper 7 is respectively connected to the frame 4 and the voice coil 8, because the conventional speaker has a small half vertex angle of the drum paper 5 to obtain a relatively good high frequency response, and needs to maintain the rigidity of the drum paper 5, the shape of the conventional speaker is relatively high, so that the position of the damper 7 is lowered to provide more height space for the drum paper 5, that is, the distance between the joint surface of the drum paper 5 and the frame 4 and the joint surface of the damper 7 and the frame 4 needs to be increased, and the height of the conventional speaker is relatively large due to the structural design.

In order to solve the problem, the embodiment of the utility model provides a speaker, it is same, the embodiment of the utility model provides a speaker also includes support 1, magnet steel 2, china department 3, basin frame 4, drum paper 5, dustproof cap 6, bullet ripples 7 and voice coil loudspeaker voice coil 8.

Different from the traditional loudspeaker, in the loudspeaker provided by the embodiment of the utility model, the elastic wave 7 is not connected with the voice coil 8, but is respectively connected with the frame 4 and the drum paper 5;

specifically, the outer edge of the elastic wave 7 is connected with the inner wall of the basin frame 4, in this embodiment, the inner wall of the basin frame 4 is provided with a supporting step, and the outer edge of the elastic wave 7 is arranged on the supporting step;

the middle hole of the elastic wave 7 is connected with the inner surface of the cone of the drum paper 5, wherein the inner surface of the cone of the drum paper 5 is the surface of the drum paper 5 close to the basin stand 4; the size of the central hole determines the connection position of the elastic wave 7 and the drum paper 5, and as can be seen from fig. 2, if the central hole is large, the connection position of the elastic wave 7 and the drum paper 5 is upper, and if the central hole is small, the connection position of the elastic wave 7 and the drum paper 5 is lower.

Because the center hole of the elastic wave 7 is connected with the inner surface of the cone of the drum paper 5, and the connection mode of the drum paper 5 and the voice coil 8 is not changed, namely the voice coil 8 does not need to provide a position for connecting the elastic wave 7, the length of the voice coil 8 is reduced, the cost is saved, and meanwhile, the distance from the binding surface of the basin frame 4 and the drum paper 5 to the binding surface of the elastic wave 7 and the basin frame 4 can be reduced, so that the height of the loudspeaker is reduced; mesoporous position and shape and drum paper 5 looks adaptation to the laminating in the embodiment of the utility model provides an, play ripples 7 adopts sticky mode laminating with drum paper 5, if utilize yellow glue etc. to bond play ripples 7 on drum paper 5.

The embodiment of the utility model provides an in, in this embodiment, play ripples 7 can adopt ripple damping board or butterfly damping board, rubber damping board etc. and is optional, when play ripples 7 adopt ripple damping board, can superpose many damping boards, forms a compound play back after-mentioned and is connected to basin frame 4 and drum paper 5, forms woofer.

The embodiment of the utility model provides an in, the bonding technology of bullet ripples 7 and drum paper 5 needs to increase the tool, laminates the drying back earlier with the tool for bullet ripples 7 with drum paper 5, laminates with basin frame 4 together again.

According to different structures of magnetic circuit designs, the bracket 1 can be made of T iron or U iron, specifically, when the loudspeaker is of an internal magnetic type magnetic circuit structure, the bracket 1 is made of U iron, and when the loudspeaker is of an external magnetic type magnetic circuit structure, the bracket 1 is made of T iron.

The following is to the principle that the embodiment of the present invention provides a speaker still guarantees original tone quality under the condition of height reduction goes on in detail.

According to a high-frequency upper limit frequency formula of the loudspeaker:

wherein,

in the above formula, m₁Mass m of the voice coil 8₂Is the mass of the drum paper 5, s_nThe stiffness of the root of the drum paper 5, E the elastic modulus of the drum paper 5, h the thickness of the root of the drum paper 5, and θ the half-apex angle of the drum paper 5, which is shown in fig. 1 and 2.

Comparing fig. 1 and 2, the main difference between the loudspeaker shown in fig. 2 and the loudspeaker shown in fig. 1 is that the position of the damper 7 is shifted, as can be seen from the above formula, compared with the conventional loudspeakerThat is, the mass m of the drum paper 5 in the case where the vibration system material is not changed₂Stiffness s of the root of the drum paper 5_nThe elastic modulus E of the drum paper 5 and the thickness h of the root of the drum paper 5 are kept unchanged, the embodiment of the utility model provides a loudspeaker except the mass m of the voice coil 8₁As the length of the drum paper becomes shorter and becomes smaller, the half apex angle θ of the drum paper 5 also remains unchanged, and it can be seen that the high-frequency upper limit cutoff frequency of the loudspeaker provided by the embodiment of the present invention is also basically unchanged (i.e. the high-frequency extension of the loudspeaker is ensured);

the contrast of concrete accessible sound pressure frequency response curve explains, refer to the traditional speaker that fig. 3 shows and the utility model provides a speaker is 2V at input voltage, and microphone and speaker distance are the SPL (sound pressure level) curve contrast diagram under the test parameter of 0.5m, and wherein A does the utility model provides a SPL curve of speaker, B are traditional speaker's SPL curve, traditional speaker and the utility model provides a speaker's SPL curve is though slightly different, but general trend, sensitivity and cut-off frequency are all very close, the utility model provides a speaker is superior to traditional speaker even in the performance of high frequency.

According to the loudspeaker provided by the embodiment of the utility model, through connecting the elastic wave to the drum paper, on one hand, the voice coil does not need to provide a connecting position to connect the elastic wave, so that the length of the voice coil can be reduced, and the cost is saved; on the other hand, the distance from the binding surface of the basin frame and the drum paper to the binding surface of the elastic wave and the basin frame can be reduced, and therefore the height of the loudspeaker is reduced.

An embodiment of the utility model provides a still provide an audio amplifier, the audio amplifier includes aforementioned embodiment the speaker, owing to adopt aforementioned speaker that has reduced the height, make the thickness of audio amplifier is corresponding to be reduced to improve the portable experience of audio amplifier.

It is to be understood that the above-described embodiments are only some of the embodiments of the present invention, and not all embodiments, and that the appended drawings illustrate preferred embodiments of the present invention, but do not limit the scope of the invention. The present invention may be embodied in many different forms and, on the contrary, these embodiments are provided so that this disclosure will be thorough and complete. Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and modifications can be made, and equivalents may be substituted for elements thereof. All utilize the equivalent structure that the content of the utility model discloses a specification and attached drawing was done, direct or indirect application is in other relevant technical field, all is in the same way the utility model discloses within the patent protection scope.

Claims (5)

1. The utility model provides a loudspeaker, its characterized in that includes support (1), magnet steel (2), china department (3), basin frame (4), drum paper (5), dustproof cap (6), bullet ripples (7) and voice coil loudspeaker voice coil (8), wherein, basin frame (4) and drum paper (5) are connected respectively to bullet ripples (7), the outer fringe of bullet ripples (7) is connected the inner wall of basin frame (4), the mesopore of bullet ripples (7) is connected drum paper (5) centrum internal surface.

2. A loudspeaker according to claim 1, wherein the drum paper (5) is adhesively attached to the spider (7).

3. Loudspeaker according to claim 1, characterized in that the damper (7) is a corrugated or butterfly damper, a rubber damper.

4. A loudspeaker according to claim 1, wherein the damper (7) comprises a plurality of corrugated damping plates.

5. An acoustic enclosure comprising a loudspeaker according to any one of claims 1 to 4.