CN209806081U - Passive radiator and sound production device - Google Patents

Passive radiator and sound production device Download PDF

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Publication number
CN209806081U
CN209806081U CN201921097480.2U CN201921097480U CN209806081U CN 209806081 U CN209806081 U CN 209806081U CN 201921097480 U CN201921097480 U CN 201921097480U CN 209806081 U CN209806081 U CN 209806081U
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CN
China
Prior art keywords
passive radiator
connecting portion
hole
mounting plate
casing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201921097480.2U
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Chinese (zh)
Inventor
杨志军
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Xian TCL Software Development Co Ltd
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Xian TCL Software Development Co Ltd
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Filing date
Publication date
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Priority to CN201921097480.2U priority Critical patent/CN209806081U/en
Application granted granted Critical
Publication of CN209806081U publication Critical patent/CN209806081U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model discloses a passive radiator and sound production device, wherein, passive radiator is including the first casing that has the through-hole, and cover the passive radiator body of through-hole, the passive radiator body include with first casing bijection integrated into one piece's vibrating diaphragm and cladding are in counterweight plate in the vibrating diaphragm, the border cladding of vibrating diaphragm first casing is close to the tip of through-hole. The utility model discloses can guarantee the seal in sound chamber through bijection fashioned passive radiator, cancel supplementary materials such as glue, screw, metal support that traditional passive radiator and audio amplifier shell equipment in-process used, save material cost and cost of labor, simplify the technology processing procedure.

Description

Passive radiator and sound production device
Technical Field
The utility model relates to a technical field that the production of vocal device was made especially relates to a passive radiator and vocal device.
Background
at present, passive radiators are often used in sound production device systems instead of inverters to adjust the sound quality of smaller enclosures and to give them a better bass performance. Passive radiators are a good alternative, especially in some cases, because the tank is too small to fit the inverter. The big advantage of the sound production device system of passive radiator is that the load of producing bass with small-size bass unit can be transferred to the passive radiator with larger size, and the passive radiator at this moment can carry out bigger linear vibration.
However, in the small-sized sound box product, the enclosure of the sound box and the passive radiator form a sound cavity, which is basically fixed by gluing and screws. These conventional connections have two main drawbacks: firstly, the sealing performance of the sound cavity is difficult to ensure due to the fact that the sound cavity is bonded or fixed insecurely by adopting glue or screws for fixing; secondly, need more glue and fixed auxiliary material, the process is complicated simultaneously for the manufacturing cost of audio amplifier remains high.
Accordingly, there is a need for a passive radiator and sound generating device that overcomes or mitigates at least the above-mentioned deficiencies of the prior art.
SUMMERY OF THE UTILITY MODEL
A primary object of the present invention is to provide a passive radiator and a sound generating device, which are adapted to solve the technical problems of the prior art that the connection between the speaker housing and the passive radiator cannot ensure the air tightness of the sound chamber and the manufacturing cost is high.
In order to achieve the above object, the present invention provides a passive radiator and a sound generating device, wherein the passive radiator includes: the passive radiator body that has the through-hole, and cover the through-hole, the passive radiator body include with first casing bijection integrated into one piece's vibrating diaphragm and cladding are in the counterweight plate in the vibrating diaphragm, the border cladding of vibrating diaphragm first casing is close to the tip of through-hole.
Preferably, the first casing include the curb plate and with the mounting panel that the curb plate is connected, the through-hole is seted up on the mounting panel, the vibrating diaphragm includes by outer to interior connecting portion that connects gradually, ring portion and cladding portion, connecting portion are including first connecting portion, second connecting portion and the third connecting portion that connect gradually, first connecting portion with the third connecting portion respectively with the surface connection of the relative both sides of mounting panel, the second connecting portion with the internal surface connection of through-hole, the cladding portion cladding the weight plate.
Preferably, the first housing further includes a first groove formed in the mounting plate, the diaphragm further includes a protrusion connected to the connecting portion, and the protrusion is embedded in the first groove.
Preferably, the bellying quantity is a plurality of, and is a plurality of the bellying respectively with first connecting portion with the third connecting portion are connected, the quantity of first recess is a plurality of, sets up respectively in the relative both sides of mounting panel, the bellying with first recess one-to-one is connected.
Preferably, connecting portion still include with the hangers portion that the third connecting portion are connected, first casing still including set up in second recess on the mounting panel, with the spliced pole that the bottom surface of second recess is connected, hangers portion inlays to be located in the second recess and encircle the spliced pole setting.
Preferably, the surfaces of two opposite sides of the mounting plate are recessed to form steps, and the first connecting portion and the third connecting portion are connected to the surfaces of the two steps.
Preferably, the step includes certainly the outer surface of mounting panel is sunken to be buckled the face of keeping off that forms and certainly keep off to being close to the installation face that the cladding portion direction extended to form, first recess is seted up in the installation face, first connecting portion with third connecting portion respectively with correspond keep off the face and the installation face is connected, the surface of first connecting portion with the surface of third connecting portion respectively with the surface parallel and level of mounting panel.
preferably, a first positioning hole is formed in the weight plate, a second positioning hole coaxial with the first positioning hole is formed in one side, away from the sound cavity, of the cladding portion, and the diameter of the second positioning hole is larger than that of the first positioning hole.
Furthermore, the utility model provides a sounder, wherein, sounder includes second casing, sound production monomer and foretell passive radiator, second casing lid is located first casing and cooperation form accommodating space, the sound production monomer with passive radiator accept in the accommodating space.
Preferably, the first shell and the second shell are hermetically connected through a sealing ring, and the diaphragm of the sound generating unit and the diaphragm of the passive radiator are coaxially arranged.
The technical scheme of the utility model among, because the passive radiator that provides includes that one penetrates fashioned first casing, two penetrate fashioned vibrating diaphragm and the weight plate of cladding in the vibrating diaphragm, and the first casing of vibrating diaphragm border cladding is close to the tip of through-hole, consequently can guarantee the seal of sound chamber through the passive radiator of bijection shaping, cancel glue, screw, auxiliary materials such as metal support that use in traditional passive radiator and the audio amplifier shell assembling process, save material cost and cost of labor, simplify the technology processing procedure.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a schematic perspective view of a passive radiator according to an embodiment of the present invention;
fig. 2 is a schematic cross-sectional view of a passive radiator according to an embodiment of the present invention;
FIG. 3 is an enlarged schematic view at A in FIG. 2;
Fig. 4 is another schematic cross-sectional view of a passive radiator according to an embodiment of the present invention;
Fig. 5 is a schematic perspective view of a passive radiator body according to an embodiment of the present invention;
Fig. 6 is a schematic perspective view of a sound generating device according to an embodiment of the present invention;
Fig. 7 is a schematic view illustrating the sound generating device of the present invention being disassembled from a single body.
the objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.
The reference numbers illustrate:
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
the technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that all the directional indicators (such as upper, lower, left, right, front and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit ly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
Referring to fig. 1 to 4, according to an aspect of the present invention, a passive radiator is provided, wherein the passive radiator includes a first housing 1 having a through hole 13, and a passive radiator body 3 covering the through hole 13, the passive radiator body 3 includes a diaphragm 4 formed by two-shot molding with the first housing 1, and a weight plate 5 wrapped in the diaphragm 4, and an edge of the diaphragm 4 wraps an end portion of the first housing 1 near the through hole 13.
It should be particularly noted that the steps of the bijective integrated molding of the passive radiator are as follows: in the first step, a hard glue is injected into an injection molding mold to form a first housing 1 having a supporting function, wherein the hard glue may be a plastic with a higher surface hardness, such AS PS (polystyrene plastic), ABS (Acrylonitrile Butadiene Styrene plastic), AS (Acrylonitrile Styrene copolymer), rigid PVC (Polyvinyl chloride), and the like. And in the third step, soft Rubber is injected into the cavity defined by the first shell 1 and the second injection molding mold to form a vibrating diaphragm 4 capable of elastically vibrating, wherein the soft Rubber can be soft Rubber made of IIR (isobutene-isoPrene Rubber, butyl Rubber), NBR (Nitrile Butadiene Rubber) and the like.
In the present embodiment, the passive radiator is used in cooperation with a sounding unit (not shown), that is, the sounding unit is an active sounding unit having a magnetic track system and a voice coil, and the passive radiator is a passive sounding unit having no magnetic track system and no voice coil. The first casing 1 is matched with other casings to form a containing space for containing the passive radiator body 3 and the sounding single body, and a sound cavity is formed between a vibrating diaphragm (not shown) of the sounding single body and a vibrating diaphragm 4 of the passive radiator.
The technical scheme of the utility model, because the passive radiator that provides includes that one penetrates fashioned first casing 1, two penetrate fashioned vibrating diaphragm 4 and the cladding is at the weight plate 5 in vibrating diaphragm 4, and the first casing 1 of vibrating diaphragm 4 border cladding is close to the tip of through-hole 13, consequently can guarantee the seal in sound chamber through the passive radiator of bijection fashioned, and can cancel glue that traditional passive radiator and audio amplifier shell equipment in-process used, the screw, auxiliary materials such as metal support, save material cost and cost of labor, simplify the technology processing procedure.
Further, the first housing 1 includes a side plate 11 and a mounting plate 12 connected to the side plate 11, the through hole 13 is opened on the mounting plate 12, the diaphragm 4 includes a connecting portion 41, a corrugated portion 42 and a covering portion 43 which are sequentially connected from outside to inside, the connecting portion 41 includes a first connecting portion 411, a second connecting portion 41241 and a third connecting portion 413 which are sequentially connected, the first connecting portion 411 and the third connecting portion 413 are respectively connected to surfaces of two opposite sides of the mounting plate 12, the second connecting portion 412 is connected to an inner surface of the through hole 13, and the covering portion 43 covers the weight plate 5. The connection portion 41 of the diaphragm 4 and the first housing 1 includes a first connection portion 411, a second connection portion 412 and a third connection portion 413, and the first connection portion 411, the second connection portion 412 and the third connection portion 413 can completely cover the edge of the through hole 13, so that the connection portion 41 and the first housing 1 are completely connected, and the stability and reliability of the passive radiator, especially the stability of the connection with the first housing 1 when the diaphragm 4 vibrates, are ensured.
Specifically, the first housing 1 further includes a first groove (not shown) opened on the mounting plate 12, and the diaphragm 4 further includes a protrusion 414 connected to the connecting portion 41, and the protrusion 414 is embedded in the first groove. The first casing 1 is formed with the first recess of injection molding, and the first recess encircles through-hole 13 and sets up, and the vibrating diaphragm 4 is formed with boss 414 with first recess complex two injection molding to guarantee that the flexible glue is more firm with the first casing 1 fusion that the ebonite formed when the shaping.
More specifically, the number of the protruding portions 414 may be multiple, the multiple protruding portions 414 are respectively connected to the first connecting portion 411 and the third connecting portion 413, the number of the first grooves is multiple, the multiple first grooves are respectively opened at two opposite sides of the mounting plate 12, and the protruding portions 414 are connected to the first grooves in a one-to-one correspondence manner. The first connection portion 411 and the third connection portion 413 are respectively provided with a protrusion portion 414, the first connection portion 411 and the third connection portion 413 are respectively connected with two opposite side surfaces of the mounting plate 12, a plurality of first grooves are respectively formed on the two opposite side surfaces of the mounting plate 12, and the protrusion portions 414 on the first connection portion 411 and the third connection portion 413 can be embedded in the first grooves on the mounting plate 12. The present invention is not limited to this, the second connecting portion 412 may also be provided with a protruding portion 414, and the inner wall surface of the through hole 13 may be formed with a first groove engaged therewith.
Referring to fig. 1 and 4, in an embodiment, the connection portion 41 further includes a hanging ear portion 415 connected to the third connection portion 413, the first housing 1 further includes a second groove (not shown) opened on the mounting plate 12, and a connection post 14 connected to a bottom surface of the second groove, and the hanging ear portion 415 is embedded in the second groove and disposed around the connection post 14. The hanging portion 415 is embedded in the second groove around the connection post 14 to ensure that the two-shot formed diaphragm 4 is more firmly fused on the first casing 1. More specifically, the connection posts 14 on the first housing 1 can be used to connect with corresponding connection posts 14 on the second housing 2.
In addition, the surfaces of the opposite sides of the mounting plate 12 are recessed to form steps 15, respectively, and the first connection portion 411 and the third connection portion 413 are connected to the surfaces of the two steps 15, respectively. Furthermore, the step 15 includes a blocking surface 151 formed by bending and recessing from the outer surface of the mounting plate 12 and a mounting surface 152 formed by extending from the blocking surface 151 to a direction close to the covering portion 43, the first groove is opened on the mounting surface 152, and the first connecting portion 411 and the third connecting portion 413 are respectively connected with the corresponding blocking surface 151 and the mounting surface 152, so that the outer surface of the first connecting portion 411 and the outer surface of the third connecting portion 413 are respectively flush with the outer surface of the mounting plate 12.
Referring to fig. 5, in an embodiment, the weight plate 5 is formed with a first positioning hole 51, a side of the cladding 43 away from the sound cavity is formed with a second positioning hole 44 coaxial with the first positioning hole 51, and the diameter of the second positioning hole 44 is larger than that of the first positioning hole 51. The first positioning hole 51 is formed in the weight plate 5 in advance, when the first positioning hole 51 is used for two-shot molding of the vibrating diaphragm 4, the weight plate 5 can be propped by a thimble, the weight plate 5 is prevented from falling off, soft glue is injected into the two-shot molding to form the vibrating diaphragm 4, the vibrating diaphragm 4 can naturally form a second positioning hole 44 matched with the thimble, and the diameter of the second positioning hole 44 is larger than that of the first positioning hole 51, so that the thimble can be separated from the manufactured vibrating diaphragm 4 more smoothly. Meanwhile, the weight plate 5 may be a metal plate, for example: iron plate, copper plate, aluminum plate, stainless steel plate or aluminum alloy plate.
Furthermore, the utility model provides a sound production device, wherein, see fig. 6 and fig. 7, sound production device includes second casing 2, sound production monomer and foretell passive radiator, and first casing 1 is located to second casing 2 lid and the cooperation forms accommodating space, and sound production monomer and passive radiator are acceptd in accommodating space. Specifically, the first casing 1 and the second casing 2 are sealed by a seal ring 6, and the diaphragm of the sounding monomer and the diaphragm 4 of the passive radiator are coaxially arranged. The seal ring 6 may be an EVA (ethylene-vinyl acetate copolymer) seal ring. Since the set-top box adopts all the technical solutions of the above embodiments, at least all the beneficial effects brought by the technical solutions of the above embodiments are achieved, and are not described in detail herein.
the above is only the preferred embodiment of the present invention, and not the scope of the present invention, all the equivalent structures or equivalent flow changes made by the contents of the specification and the drawings or the direct or indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims (10)

1. A passive radiator, comprising: the passive radiator body that has the through-hole, and cover the through-hole, the passive radiator body include with first casing bijection integrated into one piece's vibrating diaphragm and cladding are in the counterweight plate in the vibrating diaphragm, the border cladding of vibrating diaphragm first casing is close to the tip of through-hole.
2. The passive radiator of claim 1, wherein the first housing includes a side plate and a mounting plate connected to the side plate, the through hole is opened in the mounting plate, the diaphragm includes a connecting portion, a loop portion and a covering portion sequentially connected from outside to inside, the connecting portion includes a first connecting portion, a second connecting portion and a third connecting portion sequentially connected, the first connecting portion and the third connecting portion are respectively connected to surfaces of two opposite sides of the mounting plate, the second connecting portion is connected to an inner surface of the through hole, and the covering portion covers the weight plate.
3. The passive radiator of claim 2, wherein the first housing further comprises a first groove opened on the mounting plate, and the diaphragm further comprises a protrusion connected to the connection portion, and the protrusion is embedded in the first groove.
4. The passive radiator of claim 3, wherein the number of the protruding portions is plural, the plural protruding portions are respectively connected to the first connecting portion and the third connecting portion, the number of the first grooves is plural, the plural first grooves are respectively opened at two opposite sides of the mounting plate, and the protruding portions are connected to the first grooves in a one-to-one correspondence.
5. The passive radiator of claim 3, wherein the connecting portion further comprises a lug portion connected to the third connecting portion, the first housing further comprises a second groove formed in the mounting plate and a connecting post connected to a bottom surface of the second groove, and the lug portion is embedded in the second groove and disposed around the connecting post.
6. A passive radiator according to any one of claims 3 to 5, wherein the surfaces of the opposite sides of the mounting plate are recessed to form steps, and the first connection portion and the third connection portion are connected to the surfaces of the two steps, respectively.
7. The passive radiator of claim 6, wherein the step includes a blocking surface formed by bending and recessing from an outer surface of the mounting plate and a mounting surface formed by extending from the blocking surface to a direction close to the cladding portion, the first groove is opened in the mounting surface, the first connecting portion and the third connecting portion are respectively connected to the corresponding blocking surface and the mounting surface, and outer surfaces of the first connecting portion and the third connecting portion are respectively flush with the outer surface of the mounting plate.
8. The passive radiator of claim 2, wherein a first positioning hole is formed in the weight plate, a second positioning hole coaxial with the first positioning hole is formed in a side of the cladding portion away from the sound cavity, and a diameter of the second positioning hole is larger than a diameter of the first positioning hole.
9. A sound-producing device, comprising a second housing, a sound-producing unit, and a passive radiator according to any one of claims 1 to 8, wherein the second housing covers the first housing and cooperates with the first housing to form an accommodating space, and the sound-producing unit and the passive radiator are accommodated in the accommodating space.
10. the sounding device according to claim 9, wherein the first casing and the second casing are hermetically connected by a sealing ring, and a diaphragm of the sounding unit and a diaphragm of the passive radiator are coaxially arranged.
CN201921097480.2U 2019-07-12 2019-07-12 Passive radiator and sound production device Expired - Fee Related CN209806081U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201921097480.2U CN209806081U (en) 2019-07-12 2019-07-12 Passive radiator and sound production device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201921097480.2U CN209806081U (en) 2019-07-12 2019-07-12 Passive radiator and sound production device

Publications (1)

Publication Number Publication Date
CN209806081U true CN209806081U (en) 2019-12-17

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201921097480.2U Expired - Fee Related CN209806081U (en) 2019-07-12 2019-07-12 Passive radiator and sound production device

Country Status (1)

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CN (1) CN209806081U (en)

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CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20191217

Termination date: 20210712