Novel low-distortion passive board

Abstract

The utility model relates to the technical field of sound equipment, in particular to a novel low-distortion passive plate, which comprises a diaphragm body, a folding ring part, a supporting part, two groups of first reinforcing rib groups and a plurality of groups of second reinforcing rib groups, the first reinforcing rib sets and the second reinforcing rib sets are connected with the diaphragm body and the supporting part, the flaring direction of the first reinforcing rib sets is opposite to the flaring direction of the second reinforcing rib sets, the strength of the folding ring part can be improved, the surface area, separated by the two first reinforcing rib sets and the multiple second reinforcing rib sets, of the folding ring part tends to be uniform, and the sealing performance of the diaphragm is improved. The overall structural stability of the novel low-distortion passive plate is improved, the non-response swing of the folding ring part under the high-power condition is reduced, and the possibility of distortion caused when the novel low-distortion passive plate is applied to a sound box is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of audio, in particular to a novel low-distortion passive board. Background Art

[0002] The passive panel of the speaker is the passive diaphragm, also known as a passive radiator or an empty paper cone. It is a sound generator that does not have an active driving force and does not contain a driving system. The passive diaphragm relies on the active speaker to compress the air in the acoustic cavity when it is working, and is driven to make sound. This technology has been widely used with the rise of miniature speakers. It aims to increase the driving area of ​​the diaphragm to push a larger volume of air to obtain low-frequency volume. The structure of the passive diaphragm is fully enclosed, so it is easy to form an air pressure difference inside and outside the cavity, resulting in the effect of mutually supporting the diaphragms (including active and passive).

[0003] The existing passive panel has no reinforcement structure at the folding ring. Even if reinforcement structures are added at the four corners of the folding ring, the strength is still insufficient and it is easy to swing unresponsively under high power conditions, resulting in sound distortion. Summary of the Invention

[0004] In order to overcome the shortcomings and deficiencies in the prior art, the purpose of the present invention is to provide a new low-distortion passive board.

[0005] The purpose of the utility model is achieved through the following technical solutions: a new type of low-distortion passive plate, including a diaphragm body, a folding ring portion annularly connected to the outer periphery of the diaphragm body, a supporting portion annularly connected to the outer periphery of the folding ring portion, two groups of first reinforcing rib groups symmetrically protruding on both sides of the middle of the folding ring portion, and multiple groups of second reinforcing rib groups annularly evenly distributed at both ends of the folding ring portion and protruding from the folding ring portion, the shape of the first reinforcing rib group and the shape of the second reinforcing rib group are both "eight"-shaped, the two ends of the first reinforcing rib group are respectively connected to the diaphragm body and the supporting portion, the two ends of the second reinforcing rib group are respectively connected to the diaphragm body and the supporting portion, the "eight"-shaped flaring direction of the first reinforcing rib group is opposite to the "eight"-shaped flaring direction of the second reinforcing rib group.

[0006] Preferably, the first reinforcing rib group includes two first reinforcing rib bodies spaced apart and arranged in an "eight" shape; the second reinforcing rib group includes two second reinforcing rib bodies spaced apart and arranged in an "eight" shape.

[0007] Preferably, the distance between the two first reinforcing rib bodies gradually increases along the direction from the supporting portion to the diaphragm body; and the distance between the two second reinforcing rib bodies gradually increases along the direction from the diaphragm body to the supporting portion.

[0008] In another embodiment, the distance between the two first reinforcing rib bodies gradually increases along the diaphragm body toward the supporting portion; and the distance between the two second reinforcing rib bodies gradually increases along the supporting portion toward the diaphragm body.

[0009] Preferably, the cross section of the folded ring portion is in an inverted U shape.

[0010] Preferably, a connecting groove is provided in an annular shape on the outer periphery of the diaphragm body, and the inner ring side of the folded ring portion, one end of the first reinforcing rib group and one end of the second reinforcing rib group are all connected to the connecting groove.

[0011] Preferably, an iron plate groove for embedding an iron plate is provided at the bottom of the diaphragm body.

[0012] Preferably, the iron sheet groove is a rounded rectangular shape.

[0013] The beneficial effects of the present invention are as follows: the new low-distortion passive plate of the present invention adopts a diaphragm body, a folding ring portion annularly connected to the outer periphery of the diaphragm body, a supporting portion annularly connected to the outer periphery of the folding ring portion, two groups of first reinforcing rib groups symmetrically protruding on both sides of the middle of the folding ring portion, and multiple groups of second reinforcing rib groups annularly evenly distributed at both ends of the folding ring portion and protruding on the folding ring portion, and the shape of the first reinforcing rib group and the shape of the second reinforcing rib group are both "eight" shaped, the two ends of the first reinforcing rib group are respectively connected to the diaphragm body and the supporting portion, the two ends of the second reinforcing rib group are respectively connected to the diaphragm body and the supporting portion, and the first reinforcing rib group is The "eight"-shaped flaring direction is opposite to the "eight"-shaped flaring direction of the second reinforcing rib group, which is not only beneficial to improving the strength of the folding ring part, but also makes the surface area of ​​the folding ring part separated by two groups of first reinforcing rib groups and multiple groups of second reinforcing ribs more uniform, that is, the surface area of ​​the folding ring part separated by two adjacent second reinforcing rib groups and the surface area of ​​the folding ring part separated by the first reinforcing rib group and the second reinforcing rib adjacent thereto are more similar, thereby improving the overall structural stability of the new low-distortion passive board, reducing the non-responsive swing of the folding ring part under high-power conditions, and reducing the possibility of distortion caused by the new low-distortion passive board when used in audio. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural diagram of the utility model;

[0015] Figure 2 It is a structural schematic diagram of the back side of the utility model;

[0016] Figure 3 It is a top view of the utility model;

[0017] Figure 4 yes Figure 3 Cross-section of the middle AA;

[0018] Figure 5 This is a distortion diagram tested by the present invention, wherein the horizontal axis of the distortion diagram is the frequency point, ranging from 10-20000, in Hz; the vertical axis of the distortion diagram is the distortion value, ranging from 0-50, in %.

[0019] The accompanying drawings are marked as follows: 1. diaphragm body; 2. folding ring portion; 3. supporting portion; 4. first reinforcing rib group; 41. first reinforcing rib body; 5. second reinforcing rib group; 51. second reinforcing rib body; 6. connecting groove; 7. iron plate groove. DETAILED DESCRIPTION

[0020] In order to facilitate understanding by those skilled in the art, the present invention will be further described below with reference to embodiments and drawings. The contents mentioned in the embodiments are not intended to limit the present invention.

[0021] like Figure 1-5 As shown, a new type of low-distortion passive plate includes a diaphragm body 1, a folding ring portion 2 annularly connected to the outer periphery of the diaphragm body 1, a supporting portion 3 annularly connected to the outer periphery of the folding ring portion 2, two groups of first reinforcing rib groups 4 symmetrically protruding on both sides of the middle part of the folding ring portion 2, and multiple groups of second reinforcing rib groups 5 annularly evenly distributed at both ends of the folding ring portion 2 and protruding from the folding ring portion 2. The shape of the first reinforcing rib group 4 and the shape of the second reinforcing rib group 5 are both "eight"-shaped, the two ends of the first reinforcing rib group 4 are respectively connected to the diaphragm body 1 and the supporting portion 3, and the two ends of the second reinforcing rib group 5 are respectively connected to the diaphragm body 1 and the supporting portion 3, and the "eight"-shaped flaring direction of the first reinforcing rib group 4 is opposite to the "eight"-shaped flaring direction of the second reinforcing rib group 5.

[0022] The novel low-distortion passive plate adopts a diaphragm body 1, a folding ring portion 2 annularly connected to the outer periphery of the diaphragm body 1, a supporting portion 3 annularly connected to the outer periphery of the folding ring portion 2, two groups of first reinforcing rib groups 4 symmetrically protruding on both sides of the middle of the folding ring portion 2, and multiple groups of second reinforcing rib groups 5 annularly evenly distributed at both ends of the folding ring portion 2 and protruding on the folding ring portion 2, and the shape of the first reinforcing rib group 4 and the shape of the second reinforcing rib group 5 are both "eight" shaped, the two ends of the first reinforcing rib group 4 are respectively connected to the diaphragm body 1 and the supporting portion 3, the two ends of the second reinforcing rib group 5 are respectively connected to the diaphragm body 1 and the supporting portion 3, the "eight" shape of the first reinforcing rib group 4 The flaring direction is opposite to the "eight"-shaped flaring direction of the second reinforcing rib group 5, which is not only beneficial to improving the strength of the folding ring portion 2, but also makes the surface area of ​​the folding ring portion 2 separated by the two groups of first reinforcing rib groups 4 and the multiple groups of second reinforcing ribs more uniform, that is, the surface area of ​​the folding ring portion 2 separated by two adjacent second reinforcing rib groups 5, and the surface area of ​​the folding ring portion 2 separated by the first reinforcing rib group 4 and the second reinforcing rib adjacent thereto are more similar, thereby improving the overall structural stability of the new low-distortion passive panel, reducing the non-responsive swing of the folding ring portion 2 under high-power conditions, and reducing the possibility of distortion caused by the new low-distortion passive panel when used in audio. Preferably, in this embodiment, the number of second reinforcing rib groups 5 is ten, and the ten groups of second reinforcing rib groups 5 and the two groups of first reinforcing rib groups 4 are combined and evenly distributed in a ring shape on the folding ring portion 2; the diaphragm body 1, the folding ring portion 2, the support portion 3, the first reinforcing rib group 4 and the second reinforcing rib group 5 are an integrally formed combined structure.

[0023] In this embodiment, the first reinforcing rib group 4 includes two first reinforcing rib bodies 41 spaced apart in an "eight" shape; the second reinforcing rib group 5 includes two second reinforcing rib bodies 51 spaced apart in an "eight" shape; the first reinforcing rib body 41 and the second reinforcing rib body 51 cooperate with each other, which is beneficial to improving the overall structural stability of the new low-distortion passive panel.

[0024] In this embodiment, the spacing between the two first reinforcing rib bodies 41 gradually expands along the support portion 3 toward the diaphragm body 1; the spacing between the two second reinforcing rib bodies 51 gradually expands along the diaphragm body 1 toward the support portion 3, which is not only beneficial to improving the strength of the folding ring portion 2, but also makes the surface area of ​​the folding ring portion 2 separated by the two groups of first reinforcing rib groups 4 and multiple groups of second reinforcing ribs more uniform, that is, the surface area of ​​the folding ring portion 2 separated by two adjacent second reinforcing rib groups 5, and the surface area of ​​the folding ring portion 2 separated by the first reinforcing rib group 4 and the adjacent second reinforcing rib are more similar, thereby improving the overall structural stability of the new low-distortion passive panel, reducing the non-responsive swing of the folding ring portion 2 under high-power conditions, and reducing the possibility of distortion caused by the new low-distortion passive panel when used in audio. In other embodiments, the spacing between the two first reinforcing rib bodies 41 gradually expands along the diaphragm body 1 toward the support portion 3; the spacing between the two second reinforcing rib bodies 51 gradually expands along the support portion 3 toward the diaphragm body 1, which is also beneficial to improving the strength of the folding ring portion 2, and making the surface area of ​​the folding ring portion 2 separated by the two groups of first reinforcing rib groups 4 and multiple groups of second reinforcing ribs more uniform, that is, the surface area of ​​the folding ring portion 2 separated by two adjacent second reinforcing rib groups 5, and the surface area of ​​the folding ring portion 2 separated by the first reinforcing rib group 4 and the adjacent second reinforcing rib are more similar, thereby improving the overall structural stability of the new low-distortion passive panel, reducing the non-responsive swing of the folding ring portion 2 under high-power conditions, and reducing the possibility of distortion caused by the new low-distortion passive panel when used in audio.

[0025] In this embodiment, the cross section of the folded ring portion 2 is in an inverted U shape.

[0026] In this embodiment, a connecting groove 6 is provided in an annular ring on the outer periphery of the diaphragm body 1, and the inner ring side of the folding ring portion 2, one end of the first reinforcing rib group 4 and one end of the second reinforcing rib group 5 are all connected to the connecting groove 6. The connecting groove 6 provides a clearance space for one end of the first reinforcing rib group 4 and one end of the second reinforcing rib group 5, which is more conducive to providing vibration space for the diaphragm body 1 and optimizing the sound quality.

[0027] In this embodiment, the bottom of the diaphragm body 1 is provided with an iron plate groove 7 for inserting an iron plate. During actual processing, the iron plate groove 7 is used to insert an iron plate for adjusting the lower limit of the frequency response range. This provides a more stable connection, promotes longer-lasting sound quality, and ensures that the subwoofer does not leak severely distorted sub-bass. This iron plate for adjusting the lower limit of the frequency response range is prior art and is provided here for illustrative purposes only.

[0028] In this embodiment, the iron sheet groove is in the shape of a rounded rectangle.

[0029] The above embodiments are preferred implementation schemes of the present invention. In addition, the present invention can also be implemented in other ways. Any obvious replacement without departing from the concept of the present invention is within the scope of protection of the present invention.

Claims

1. A new type of low-distortion passive board, characterized by: It includes a diaphragm body, a folding ring portion annularly connected to the outer periphery of the diaphragm body, a supporting portion annularly connected to the outer periphery of the folding ring portion, two groups of first reinforcing rib groups symmetrically protruding on both sides of the middle part of the folding ring portion, and multiple groups of second reinforcing rib groups annularly evenly distributed at both ends of the folding ring portion and protruding from the folding ring portion. The shape of the first reinforcing rib group and the shape of the second reinforcing rib group are both "eight"-shaped. The two ends of the first reinforcing rib group are respectively connected to the diaphragm body and the supporting portion, and the two ends of the second reinforcing rib group are respectively connected to the diaphragm body and the supporting portion. The "eight"-shaped flaring direction of the first reinforcing rib group is opposite to the "eight"-shaped flaring direction of the second reinforcing rib group.

2. The novel low-distortion passive board according to claim 1, characterized in that: The first reinforcing rib group includes two first reinforcing rib bodies spaced apart and arranged in an "eight" shape; the second reinforcing rib group includes two second reinforcing rib bodies spaced apart and arranged in an "eight" shape.

3. The novel low-distortion passive board according to claim 2, characterized in that: The distance between the two first reinforcing rib bodies gradually increases along the direction from the supporting portion to the diaphragm body; the distance between the two second reinforcing rib bodies gradually increases along the direction from the diaphragm body to the supporting portion.

4. The novel low-distortion passive board according to claim 2, characterized in that: The distance between the two first reinforcing rib bodies gradually increases along the direction of the diaphragm body toward the supporting portion; the distance between the two second reinforcing rib bodies gradually increases along the direction of the supporting portion toward the diaphragm body.

5. The novel low-distortion passive board according to claim 1, characterized in that: The cross section of the folding ring portion is in an inverted U shape.

6. The novel low-distortion passive board according to claim 1, characterized in that: A connecting groove is formed in an annular shape on the outer periphery of the diaphragm body, and the inner ring side of the folded ring portion, one end of the first reinforcing rib group and one end of the second reinforcing rib group are all connected to the connecting groove.

7. The novel low-distortion passive board according to claim 1, characterized in that: An iron plate groove for embedding an iron plate is provided at the bottom of the diaphragm body.

8. The novel low-distortion passive board according to claim 7, characterized in that: The iron sheet groove is in the shape of a rounded rectangle.

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