CN108012215B - Method for improving distortion of passive radiator and passive radiator - Google Patents
Method for improving distortion of passive radiator and passive radiator Download PDFInfo
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- CN108012215B CN108012215B CN201610946438.8A CN201610946438A CN108012215B CN 108012215 B CN108012215 B CN 108012215B CN 201610946438 A CN201610946438 A CN 201610946438A CN 108012215 B CN108012215 B CN 108012215B
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- 238000000034 method Methods 0.000 title claims abstract description 34
- 239000000725 suspension Substances 0.000 claims abstract description 15
- 230000008569 process Effects 0.000 claims description 6
- 239000003292 glue Substances 0.000 claims description 5
- 238000001746 injection moulding Methods 0.000 claims description 4
- 238000003466 welding Methods 0.000 claims description 4
- 238000006073 displacement reaction Methods 0.000 description 10
- 239000000463 material Substances 0.000 description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005489 elastic deformation Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
- H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only
- H04R1/28—Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
- H04R1/2869—Reduction of undesired resonances, i.e. standing waves within enclosure, or of undesired vibrations, i.e. of the enclosure itself
- H04R1/2873—Reduction of undesired resonances, i.e. standing waves within enclosure, or of undesired vibrations, i.e. of the enclosure itself for loudspeaker transducers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2201/00—Details of transducers, loudspeakers or microphones covered by H04R1/00 but not provided for in any of its subgroups
- H04R2201/02—Details casings, cabinets or mounting therein for transducers covered by H04R1/02 but not provided for in any of its subgroups
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- Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Vibration Prevention Devices (AREA)
Abstract
The embodiment of the invention discloses a passive radiator distortion improving method and a passive radiator, and relates to the technical field of sound boxes. The method for improving the distortion of the passive radiator comprises the following steps: setting the shape of the convex curved surface of the hanging edge according to the rigidity linearity of the hanging edge; and adjusting the position distribution of the counterweight structure according to the swing amplitude of the suspension edge during vibration. According to the method for improving the distortion of the passive radiator, disclosed by the embodiment of the invention, the swing amplitude of the suspended edge of the passive radiator is reduced, the stability of the passive radiator in a linear range is ensured, the linearity of the rigidity of the suspended edge is improved, the linear vibration range of the suspended edge is enlarged, and the distortion of the passive radiator is reduced by adjusting the position distribution of the counterweight structure and arranging the special shape structure on the convex curved surface of the suspended edge.
Description
Technical Field
The invention relates to the technical field of sound boxes, in particular to a method for improving distortion of a passive radiator and the passive radiator.
Background
With the increasing popularity of wireless portable speakers, consumers are increasingly favouring portable and uniquely shaped low volume speaker products, and passive radiators are widely used for these low volume speakers due to the limited interior space and the advantage of little space relative to inverter tubes. At present, most of passive radiator products adopt structures with semicircular hanging edges and plane balancing weights in the shape of protruding curved surfaces, in order to obtain lower resonance frequency, the passive radiator needs to be designed into characteristics of large compliance and large weight, at the moment, the swing of the structure of the passive radiator becomes large, the nonlinearity of the rigidity of the hanging edges becomes obvious, the linear vibration range is small, the distortion of the passive radiator mainly comes from the nonlinearity of the rigidity of the hanging edges, and the swinging of the balancing weights is accompanied in the movement, so that the nonlinear performance is also aggravated; in addition, in order to match the special shape of the small sound box and the design of other part layout, the shape of the passive radiator is often designed into a non-circular or non-completely symmetrical structure (such as a rectangle), at this time, the rigidity linear range and symmetry of the vibration output of the passive radiator are obviously affected, and the swing displacement is obviously increased, so that the non-linear performance is further aggravated, and the distortion is finally serious.
Disclosure of Invention
The invention aims to improve the distortion of a passive radiator.
In order to solve the above technical problems, the method for improving the distortion of the passive radiator and the passive radiator according to the embodiments of the present invention adopt the following technical schemes:
A method of improving distortion of a passive radiator, comprising:
Setting the shape of the convex curved surface of the hanging edge according to the rigidity linearity of the hanging edge;
And adjusting the position distribution of the counterweight structure according to the swing amplitude of the suspension edge during vibration.
Further, in the method for improving the distortion of the passive radiator, the height and the width of the convex curved surface of the cantilever side are adjusted within a preset range according to the rigidity linearity.
Further, the method for improving the distortion of the passive radiator is characterized in that the width of the top end and the width of the bottom end of the convex curved surface of the cantilever side are set in a preset range according to the linearity of the rigidity.
Further, according to the method for improving the distortion of the passive radiator, the balance weight structure reduces the swing amplitude of the suspension edge during vibration through the arrangement of the main balance weight connected to the suspension edge and the auxiliary balance weight connected to the main balance weight.
Further, in the method for improving the distortion of the passive radiator, the number of the auxiliary weights is preset.
Further, the method for improving distortion of the passive radiator is characterized in that the connecting process of the hanging edge and the counterweight structure comprises the following steps: glue adhesion, integral injection molding and welding.
A passive radiator, a method for improving distortion of the passive radiator, comprising: the device comprises a hanging edge, a main balancing weight, a first auxiliary balancing weight and a second auxiliary balancing weight;
the main balancing weight is connected to the hanging edge;
The first auxiliary balancing weight and the second auxiliary balancing weight are connected to the main balancing weight and used for adjusting the swing amplitude of the suspended edge and the stability of vibration.
Further, in the passive radiator, the shape of the protruding curved surface of the cantilever flange is M-shaped.
Further, the passive radiator has a structure that the top and the bottom of the protruding curved surface M shape of the hanging edge are arc curves.
Further, the passive radiator is characterized in that the main balancing weight is of a flat plate structure, the connecting position of the main balancing weight is located on the inner side plane of the hanging edge, and the main balancing weight is parallel to the hanging edge.
Further, the shape of the first auxiliary balancing weight and the second auxiliary balancing weight of the passive radiator are matched with the shape of the short side of the main balancing weight.
Further, in the passive radiator, the weights of the first auxiliary balancing weight and the second auxiliary balancing weight are preset.
Further, in the passive radiator, the sum of the areas of the first auxiliary balancing weight and the second auxiliary balancing weight is not more than half of the area of the main balancing weight.
Compared with the prior art, the embodiment of the invention has the following main beneficial effects:
The method for improving the distortion of the passive radiator comprises the following steps: setting the shape of the convex curved surface of the hanging edge according to the rigidity linearity of the hanging edge; and adjusting the position distribution of the counterweight structure according to the swing amplitude of the suspension edge during vibration. According to the method for improving the distortion of the passive radiator, disclosed by the embodiment of the invention, the swing amplitude of the suspended edge of the passive radiator is reduced, the stability of the passive radiator in a linear range is ensured, the linearity of the rigidity of the suspended edge is improved, the linear vibration range of the suspended edge is enlarged, and the distortion of the passive radiator is reduced by adjusting the position distribution of the counterweight structure and arranging the special shape structure on the convex curved surface of the suspended edge.
Drawings
Fig. 1 is a flowchart of a method for improving distortion of a passive radiator according to an embodiment of the present invention.
Fig. 2 is an exploded view of a passive radiator structure according to an embodiment of the present invention.
Fig. 3 is a top view of a passive radiator according to an embodiment of the present invention.
Fig. 4 is a cross-sectional view taken along line A-A in fig. 3 of an embodiment of the present invention.
Fig. 5 is a rigid linear comparison diagram of a passive radiator structure according to an embodiment of the present invention and a conventional passive radiator structure.
Reference numerals illustrate: 1-hanging edge, 2-main balancing weight, 31-first auxiliary balancing weight, 32-second auxiliary balancing weight
Detailed Description
In order that the invention may be understood more fully, the invention will be described with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
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 herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
Referring to fig. 1, a flow chart of a method for improving distortion of a passive radiator according to an embodiment of the invention is shown.
The method for improving the distortion of the passive radiator comprises the following steps:
step S1: the shape of the convex curved surface of the hanging edge is linearly arranged according to the rigidity of the hanging edge.
In the implementation of step S1, the height and width of the convex curved surface of the hanging edge 1 may be adjusted within a preset range according to the rigidity linearity, and the width of the top end and the width of the bottom end of the convex curved surface of the hanging edge 1 may be set within a preset range according to the rigidity linearity, where the widths of the top end and the bottom end have a larger difference, the width of the top end is as wide as possible within the preset range, and the width of the bottom end is as narrow as possible within the preset range. Smooth transition of the structure between the top end and the bottom end of the convex curved surface of the hanging edge 1.
Step S2: and adjusting the position distribution of the counterweight structure according to the swing amplitude of the suspension edge during vibration.
In the implementation of step S2, the counterweight structure reduces the swing amplitude of the suspended edge during vibration by setting the main counterweight 2 connected to the suspended edge 1 and the auxiliary counterweight connected to the main counterweight 2. The main balancing weight 2 is of a flat plate structure, and the shape and the size of the main balancing weight cover the area surrounded by the inner contour of the hanging edge 1 or are slightly smaller than the area. The number of the auxiliary balancing weights is preset, and the physical properties such as the shape, weight, size and thickness of the auxiliary balancing weights can be adjusted randomly according to actual needs. The shape of the auxiliary balancing weight is any shape structure with the sum of areas not larger than that of the main balancing weight, and the preferable shape is a shape which is matched with the curved surface outline of the short side of the main balancing weight 2; the sum of the preferred areas is not more than half the area of the main weight 2.
The hanging edge 1 is fixedly connected with the main balancing weight 2, the connection position of the main balancing weight 2 on the hanging edge 1 is positioned at the parallel position of the upper part or the lower part of the inner side of the hanging edge 1 and the hanging edge 1, and the specific direction is determined according to actual conditions. The connecting process of the hanging edge and the counterweight structure comprises the following steps: glue adhesion, integral injection molding, welding and the like. The main balancing weight 2 is fixedly connected with the auxiliary balancing weight. The auxiliary balancing weight connection position shown in the embodiment is located at the position, close to the outer contour line, of the longer side of the main balancing weight 1, and the auxiliary balancing weight is indirectly connected with the hanging side 1 through being fixed on the main balancing weight 2. The connecting process of the auxiliary balancing weight and the main balancing weight 2 comprises the following steps: glue bonding, one-step processing and forming, riveting and the like.
According to the method for improving the distortion of the passive radiator, the shape of the convex curved surface of the suspension edge 1 is arranged according to the rigidity linearity of the suspension edge 1, the linear displacement range of the suspension edge 1 is effectively enlarged, the position distribution of the counterweight structure is adjusted according to the swing amplitude of the suspension edge during vibration, the displacement difference of the long side and the short side of the suspension edge 1 during vibration is reduced, the swing of the suspension edge 1 is improved, and the distortion of the passive radiator is reduced.
Referring to fig. 2, an exploded view of a passive radiator structure according to an embodiment of the present invention is shown. The structure of the passive radiator comprises: the device comprises a hanging edge 1, a main balancing weight 2, a first auxiliary balancing weight 31 and a second auxiliary balancing weight 32.
The main balancing weight 2 is directly connected and fixed with the hanging edge 1, and the first auxiliary balancing weight 31 and the second auxiliary balancing weight 32 are connected and fixed on the main balancing weight 2. The first auxiliary balancing weight 31 and the second auxiliary balancing weight 32 indirectly play a role in limiting the swinging of the hanging edge 1 through being connected with the main balancing weight 2.
Referring to fig. 3, a top view of a passive radiator according to an embodiment of the present invention is shown. The hanging edge 1 of the passive radiator according to the embodiment of the present invention is exemplified by a racetrack-shaped product, but is not limited to a racetrack shape, and may be oval, rectangular, etc. The material of the hanging edge 1 is elastic material with better flexibility, including but not limited to rubber, foaming sponge, impregnated cloth and the like.
Referring to FIG. 4, a cross-sectional view of an embodiment of the present invention taken along line A-A in FIG. 3 is shown. The shape of the convex curved surface of the hanging edge 1 is M-shaped, the height and the width of the M-shaped can be adjusted randomly according to the rigidity requirement, the top end and the bottom end of the M-shaped are smooth arcs, the widths of the top end and the bottom end of the M-shaped are kept to be greatly different, the width of the top end is as wide as possible in an adjustable range, the width of the bottom end is as narrow as possible in the adjustable range, and the structure between the top end and the bottom end is in smooth transition.
The weight structure of the passive radiator according to the embodiment of the invention is composed of a main weight 2, a first auxiliary weight 31 and a second auxiliary weight 32. The materials of the main weight 2, the first auxiliary weight 31 and the second auxiliary weight 32 are hard materials which are not easy to deform, including but not limited to steel, iron, plastic and the like. The main balancing weight 2 is of a flat plate structure, the shape of the main balancing weight is matched with the outline shape of the inner ring of the hanging edge 1, and the main balancing weight is runway-shaped in the embodiment of the invention. The area of the main balancing weight 2 covers the area surrounded by the inner ring of the hanging edge or is slightly smaller than the area. The first auxiliary balancing weight 31 and the second auxiliary balancing weight 32 are adjustable balancing weights, and physical quantities such as shape, weight, volume, thickness and the like of the first auxiliary balancing weight and the second auxiliary balancing weight can be adjusted arbitrarily according to actual needs, and the number of the adjustable balancing weights is not limited to two in the embodiment of the invention. The shape of the first auxiliary balancing weight 31 and the second auxiliary balancing weight 32 is any shape with the area not larger than that of the main balancing weight, and the preferable shape of the first auxiliary balancing weight 31 and the second auxiliary balancing weight 32 is the shape which is matched with the short side of the runway of the main balancing weight 2; the preferred area size satisfies that the sum of the areas of the first auxiliary weight 31 and the second auxiliary weight 32 does not exceed half the area of the main weight 2.
The main balancing weight 2 is fixedly connected with the hanging edge 1, and the connection position of the main balancing weight 2 on the hanging edge 1 is positioned at the plane of the runway inner ring close to the hanging edge 1 and is parallel to the runway. The connection process comprises, but is not limited to, glue adhesion, integral injection molding, welding and the like. The first auxiliary balancing weight 31 and the second auxiliary balancing weight 32 are fixedly connected with the main balancing weight 2, and the installation positions of the first auxiliary balancing weight 31 and the second auxiliary balancing weight 32 are located on the short-side plane of the runway of the main balancing weight 2 and the parallel position of the attached short side and the runway. The connecting process comprises, but is not limited to, glue adhesion, one-time processing and forming, riveting and the like. The first auxiliary balancing weight 31 and the second auxiliary balancing weight 32 are indirectly connected with the hanging edge 1 through the main balancing weight 2 and are used for further adjusting the swing amplitude and the vibration stability of the passive radiator.
Referring to fig. 5, a rigid linear comparison diagram of a passive radiator structure according to an embodiment of the present invention and a conventional passive radiator structure is shown. The abscissa of the graph represents the displacement of the vibration of the passive radiator, the displacement unit being mm; the ordinate indicates the rigidity of the suspended side 1 of the passive radiator, the rigidity being in N/mm, the amount of force required for the elastic deformation of the material being 1mm, the rigidity indicating the ability of the material to resist elastic deformation. As can be seen from fig. 5, when the rigidity of the passive radiator structure is the same, the linear displacement range of the vibration supported by the improved structure of the present embodiment is significantly larger than that supported by the conventional structure; that is, when the linear displacement ranges of the vibration of the passive radiator are the same, the requirement of the passive radiator with the improved structure of the embodiment on the rigidity of the material is obviously lower than that of the passive radiator with the conventional structure.
According to the passive radiator disclosed by the embodiment of the invention, the shape of the convex curved surface of the cantilever edge 1 is M-shaped, so that the nonlinearity of the geometric shape is improved, and the linear displacement range of the cantilever edge 1 is effectively enlarged; an adjustable auxiliary balancing weight is added: the first auxiliary balancing weight 31 and the second auxiliary balancing weight 32 adjust the displacement difference of the long and short sides of the suspension edge 1 during vibration by adjusting each physical attribute and the relative connection position with the main balancing weight 2, improve the swing of the passive radiator, ensure the stability of the vibration of the passive radiator in a linear range, and simultaneously avoid abnormal sounds caused by overlarge displacement differences of different parts of the passive radiator, thereby reducing the distortion of the passive radiator.
The present invention is not limited to the above-described embodiments, and the above-described preferred embodiments of the present invention are provided for illustration only and not for limitation of the scope of the present invention, and it should be noted that it is possible for those skilled in the art to make several improvements and modifications without departing from the principle of the present invention, and such equivalent improvements and modifications are also considered to be included in the scope of protection of the present invention.
Claims (9)
1. A method for improving distortion of a passive radiator, comprising:
The method comprises the steps of linearly setting the shape of a hanging-edge convex curved surface according to the rigidity of a hanging edge, wherein the shape of the hanging-edge convex curved surface is M-shaped, and the top end and the bottom end of the M-shaped are arc-shaped curved structures;
according to the position distribution of swing amplitude adjustment counter weight structure when hanging the limit vibration, wherein, counter weight structure includes main balancing weight and assists the balancing weight, main balancing weight is flat plate structure, and its shape size covers the area that the limit inner profile was enclosed or is slightly less than this area, and its hookup location is located with hang the protruding curved surface on limit opposite inboard plane, main balancing weight with hang the limit parallel, assist the balancing weight including first supplementary balancing weight and second and assist the balancing weight, first supplementary balancing weight with the second is assisted the balancing weight and is connected on the main balancing weight, first supplementary balancing weight with the second is assisted the balancing weight the shape with main balancing weight minor face shape coincide.
2. The method for improving distortion of a passive radiator according to claim 1, wherein the height and width of the cantilever-side convex curved surface are adjustable within a predetermined range according to the linearity of the rigidity.
3. The method for improving distortion of a passive radiator according to claim 2, wherein the width of the top end and the width of the bottom end of the convex curved surface of the cantilever beam are set within a predetermined range according to the linearity of the rigidity.
4. The method for improving distortion of a passive radiator according to claim 1, wherein the weight structure reduces a swing amplitude when the hanging side vibrates by providing a main weight attached to the hanging side and an auxiliary weight attached to the main weight.
5. The method of claim 4, wherein the number of auxiliary weights is preset.
6. The method of claim 1, wherein the process of connecting the overhanging edge to the weight structure comprises: glue adhesion, integral injection molding and welding.
7. A passive radiator, a method for improving distortion of a passive radiator according to any one of claims 1 to 6, comprising: the device comprises a hanging edge (1), a main balancing weight (2), a first auxiliary balancing weight (31) and a second auxiliary balancing weight (32);
the shape of the convex curved surface of the suspension edge (1) is M-shaped, wherein the top and bottom ends of the M-shaped convex curved surface of the suspension edge (1) are arc-shaped curved structures;
the main balancing weight (2) is connected to the hanging edge (1), the main balancing weight (2) is of a flat plate structure, the shape and the size of the main balancing weight cover the area surrounded by the inner outline of the hanging edge (1) or are slightly smaller than the area, the connection position of the main balancing weight (2) is positioned on an inner side plane opposite to the convex curved surface of the hanging edge (1), and the main balancing weight (2) is parallel to the hanging edge (1);
The first auxiliary balancing weight (31) and the second auxiliary balancing weight (32) are connected to the main balancing weight (2) and used for adjusting the swing amplitude and the vibration stability of the hanging edge (1), and the shape of the first auxiliary balancing weight (31) and the shape of the second auxiliary balancing weight (32) are identical to the shape of the short side of the main balancing weight (2).
8. The passive radiator according to claim 7, characterized in that the weights of the first auxiliary weight (31) and the second auxiliary weight (32) are preset.
9. The passive radiator according to claim 7, characterized in that the sum of the areas of the first auxiliary weight (31) and the second auxiliary weight (32) does not exceed half the area of the main weight (2).
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| CN201610946438.8A CN108012215B (en) | 2016-11-02 | 2016-11-02 | Method for improving distortion of passive radiator and passive radiator |
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| CN201610946438.8A CN108012215B (en) | 2016-11-02 | 2016-11-02 | Method for improving distortion of passive radiator and passive radiator |
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| CN108012215B true CN108012215B (en) | 2024-06-07 |
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| CN114025266B (en) * | 2021-10-27 | 2024-01-16 | 惠州市众瑞声电子有限公司 | Noise reduction type passive radiator |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN108012215A (en) | 2018-05-08 |
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