CN207638829U - Muffler and noise reduction earplug including it - Google Patents
Muffler and noise reduction earplug including it Download PDFInfo
- Publication number
- CN207638829U CN207638829U CN201721301332.9U CN201721301332U CN207638829U CN 207638829 U CN207638829 U CN 207638829U CN 201721301332 U CN201721301332 U CN 201721301332U CN 207638829 U CN207638829 U CN 207638829U
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- chamber
- stopper
- muffler
- conduction chamber
- conduction
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Abstract
The utility model discloses a kind of muffler and include its noise reduction earplug, muffler includes cock body and stopper, the remote ear end of cock body is equipped with sound chamber, the edge for holding together sound chamber has outwardly extending chamfering, conduction chamber is offered in cock body, conduction chamber is placed in the rear side of sound chamber, it is a cylinder or reverse taper to conduct chamber, it conducts intracavitary plug and is equipped with stopper, stopper fits with conduction chamber, stopper is a cylinder or cone, and the outer surface of stopper is provided in the axial direction with a perforative slot, and the inner surface of the slot on the outer surface of stopper and conduction chamber forms noise rejection chamber.The utility model is while completely cutting off hazardous noise, and can be maintained at partial sound intensity in need rationally can be by human ear acquisition range.
Description
Technical field
The utility model is related to the technical fields of the muffler for filtering noise, more particularly to a kind of muffler and packet
Include the noise reduction earplug of the muffler.
Background technology
The various requirements for hearing protection are more and more common in live and work at present, conventional various sponges, plastic cement ear
Plug can reduce the decibel value of various sound.Research and development have the penetrability that sound wave is reduced by said minuscule hole at present in the market, from
And reaching reduces medium-high frequency intensity of sound, but because of the diffraction characteristic of sound wave, for component frequency especially Middle and low frequency noise
Reduction cannot be controlled effectively.
Utility model content
The utility model is in view of the problems of the existing technology and insufficient, provides a kind of muffler and the noise reduction ear including it
Partial sound intensity in need while completely cutting off hazardous noise, and can be maintained at and rationally can obtain range by human ear by plug
It is interior.
The utility model is to solve above-mentioned technical problem by following technical proposals：
The utility model provides a kind of muffler, and feature is comprising a cock body and a stopper, the cock body it is remote
Ear end is equipped with sound chamber, it is described hold together sound chamber edge there is outwardly extending chamfering, offer conduction chamber in the cock body, it is described
Conduction chamber be placed in it is described hold together sound chamber rear side, the conduction chamber is a cylinder or reverse taper, and the conduction intracavitary plug is equipped with filling in
Stick, the stopper fit with the conduction chamber, and the stopper is a cylinder or cone, and the outer surface of the stopper is along axis
To a perforative slot is offered, the inner surface of the slot on the outer surface of the stopper and the conduction chamber forms noise rejection chamber.
Preferably, it is described hold together sound chamber with it is described conduction chamber junction be arranged dustproof cover, the dustproof cover fit closely in
It on the cock body or is sticked on the cock body, at least one sound inlet is offered on the dustproof cover, the sound inlet is distributed in
The surface of the dustproof cover, and by it is described hold together sound chamber be connected with the conduction chamber.
Preferably, the dustproof cover is in mushroom, the dustproof cover has relatively large block and relatively thin bullet
Property plug handle, the resilient plug handle mutually fixes with the block, and the block is covered in the outside of the conduction chamber, the resilient plug handle
Stretch into and be clamped on the conduction intracavitary, the sound inlet is extended to from the block in the resilient plug handle, and by it is described hold together
Sound chamber is connected with the conduction chamber.
Preferably, the inner cavity of the resilient plug handle is hollow, the sound inlet is that groove type is distributed in the block
Inside, the sound inlet pass through the binding site of the resilient plug handle and the block and extend to the hollow of the resilient plug handle
Interior intracavitary.
Preferably, the resilient plug handle is non-full-circle spray pattern, the sound inlet is the inside that groove type is distributed in the block,
The sound inlet passes through the binding site of the resilient plug handle and the block and extends in the resilient plug handle.
Preferably, the conduction chamber is reverse taper, the stopper is cone, and the cone gradient of the stopper is equal to described
Conduct the chamber cones gradient of chamber；Alternatively, the conduction chamber is cylinder, the stopper is cone；Alternatively, the conduction chamber
For cone, the stopper is cylinder；The conduction chamber and the stopper are cylinder.
Preferably, the big end of the conduction chamber is nearly ear end, small end is remote ear end, the big end of the stopper be nearly ear end,
Small end is remote ear end, and the outside diameter of the conduction chamber is 0.5~4mm, and the end diameter of the conduction chamber is 0.5~4mm, institute
The length for stating conduction chamber is 5~25mm.
Preferably, the outside diameter of the conduction chamber is 2mm, the end diameter of the conduction chamber is 1.8mm, the conduction
The length of chamber is 12mm.
Preferably, the diameter of the stopper and the internal diameter of the conduction chamber match, the length of the stopper is 1mm-
25mm。
Preferably, the depth of the slot is 0.01~0.5mm.
Preferably, the outer surface of the cock body is in three-stage, it is irregular polyhedrons end, intermediate connecting body and plug respectively
Enter end, described to fill in end generally taper, the cone outside diameter for filling in end is more than the diameter of the intermediate connecting body.
The utility model also provides a kind of noise reduction earplug, and feature is comprising above-mentioned muffler and earplug body, institute
Stating earplug body has one or more layers fin, and the nearly ear end of the muffler is inserted in the filling in hole of the earplug body, described
Fill in hole internal diameter be less than the muffler nearly ear end outer diameter.
On the basis of common knowledge of the art, above-mentioned each optimum condition, can arbitrarily combine to get the utility model respectively compared with
Good example.
The positive effect of the utility model is：
Partial sound intensity in need can be maintained at and rationally may be used while completely cutting off hazardous noise by the utility model
It is obtained in range by human ear.
Description of the drawings
Fig. 1 is the structural schematic diagram of the muffler of the utility model preferred embodiment.
Fig. 2 is the structural exploded view of the muffler of the utility model preferred embodiment.
Fig. 3 is the sectional view of the muffler of the utility model preferred embodiment.
Fig. 4 is a kind of structural schematic diagram of the dustproof cover of embodiment of the utility model.
Fig. 5 is the structural schematic diagram of the dustproof cover of the utility model another kind embodiment.
Fig. 6 and 7 is the structural schematic diagram of the dustproof cover of another embodiment of the utility model.
Fig. 8 and 9 is the structural schematic diagram of the dustproof cover of another embodiment of the utility model.
Figure 10 and 11 is the structural schematic diagram of the cock body of the utility model another kind embodiment.
Figure 12 and 13 is the structural schematic diagram of the noise reduction earplug of the utility model preferred embodiment.
Specific implementation mode
It is new below in conjunction with this practicality to keep the purpose, technical scheme and advantage of the utility model embodiment clearer
Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched
The embodiment stated is the utility model a part of the embodiment, instead of all the embodiments.Based on the implementation in the utility model
Example, the every other embodiment that those of ordinary skill in the art are obtained without making creative work all belong to
In the range of the utility model protection.
As shown in Figs. 1-3, the present embodiment provides a kind of mufflers, are made of cock body 1 and stopper 2.The remote ear of the cock body 1
End is equipped with sound chamber 101, it is described hold together 101 edge of sound chamber there is outwardly extending chamfering, enter muffler convenient for external sound wave S1；
It is described hold together sound chamber 101 rear side be equipped with conduction chamber 102, the conduction chamber 102 be a cylinder or reverse taper；The conduction chamber
Stopper 2 is equipped in 102, the stopper 2 is cylinder or cone.More preferably to coordinate, 102 preferred reverse taper of chamber, stopper 2 are conducted
It is preferred that cone.
Above-mentioned conduction chamber 102, stopper 2 shape selection, be mainly based upon stopper 2 fill in conduction chamber 102 in after, can be tight
Closely connected conjunction；When satisfaction fits closely this condition, the conduction chamber 102 can be cylinder, and stopper 2 is cone；Or
The conduction chamber 102 can be cone, and stopper 2 is cylinder；Even, the conduction chamber 102 and stopper 2 are all cylinder
Body；Ensure after stopper 2 fills in conduction chamber 102, because of squeezing action, mutually can closely paste the two wall surface in the axial direction
It closes.
The outside diameter of the conduction chamber 102 is 0.5~4mm, preferably 2mm；It is described conduction chamber 102 end diameter be
0.5~4mm, preferably 1.8mm；The length of the conduction chamber 102 is 5~25mm, preferably 12mm.
The stopper 2 is cylinder or cone, preferably cone, and 2 diameter of the stopper is the same as 102 conduction intracavitary diameter phases
Together；The length of the stopper 2 is 1mm-25mm, preferably 3mm-8mm；The outer surface of the stopper 2 is provided in the axial direction with one and runs through
Slot 201 (see Fig. 2)；The depth of the slot 201 is 0.01~0.5mm, according to actual use, preferably 0.1mm~0.3mm.
The cone gradient of the stopper 2 is equal to the chamber cones gradient of the conduction chamber 102；The small end of the stopper 2 passes through
The big end of the conduction chamber 102 is filled in the conduction chamber 102；The interior table of 2 outer surface of the stopper and the conduction chamber 102
Face fits closely；Slot 201 and the inner surface of the conduction chamber 102 on 2 outer surface of the stopper form noise rejection chamber 3；Institute
It states and holds together sound chamber 101 described in external sound wave S1 warps into the conduction chamber 102, form sound wave S2；The sound wave S2 is through the noise
Restrain chamber 3 further to propagate into duct, since noise rejection chamber 3 is more long and narrow, can effectively to the noise in sound wave S2,
Especially middle low frequency noise is restrained, and to form relatively soft sound wave S3, is transmitted in ear.
The big end of the cone conduction chamber 102 is nearly ear end, and the small end of the conduction chamber 102 is remote ear end；The circle
The big end of cone stopper 2 is nearly ear end, and the small end of the stopper 2 is remote ear end；In this way be arranged after, stopper 2 be not easy by external force from
It conducts in chamber 102 and takes out.
Since noise rejection chamber 3 is slotted on its outer surface by the stopper 2 and formed, can be as needed, it does
It is relatively thin, it is longer, all kinds of noises can effectively be restrained, production technology is simpler, and manufacturing cost is relatively low.
As shown in figure 4, external impurities enter in the conduction chamber 102 of cock body 1 in order to prevent, filter effect is had an impact,
And the problem that sundries cleaning is difficult, can dustproof cover 6 be set in the junction for holding together sound chamber 101 and conduction chamber 102 of cock body 1, it is described
Dustproof cover 6 is closely fitted on cock body 1 or is sticked on cock body 1；The dustproof cover 6 is equipped with sound inlet 601, the sound inlet
601 are at least 1, are distributed in the surface of the dustproof cover 6, and will hold together sound chamber 101 and be connected with conduction chamber 102；It is described into sound
Hole 601, which is mainly risen, facilitates sound to enter conduction chamber 102, and can prevent sundries from entering in conduction chamber 102, therefore the requirement of sound inlet 601
It is arranged in the region that the dustproof cover 6 is connected with the conduction chamber 102；The shape of the sound inlet 601 can be it is rectangular,
Circle or other rule, irregular shapes.Preferably, sound inlet 601 is circle, and quantity is 1, is arranged in dustproof cover 6
Center.
As shown in 5 figures, the as another embodiment of dustproof cover 6 which is provided with sound inlet 601, the sound inlet 601
It can be abnormity fluting or other shapes, be not limited to above-mentioned rectangular or round.
Preferably, as shown in Figures 6 and 7, mushroom form also can be used in the dustproof cover 6, has larger block 602,
The block 602 is covered in the outside of conduction chamber 102；Thinner plug handle 603, plug handle can be stretched into conduction chamber 102, be realized locking；
Filling in handle 603 has certain elasticity, is clamped in conduction chamber 102, easy to disassemble and replacement dustproof cover 6；Sound inlet 601 is from block
602 extend in plug handle 603, will hold together sound chamber 101 and are connected with conduction chamber 102；As shown in Figures 6 and 7, as preferred embodiment party
Formula, the inner cavity of the plug handle 603 are hollow, and the sound inlet 601 is that groove type is distributed in the inside of block 602, it is described into
Sound hole 601 passes through the binding site of plug handle 603 and block 602, extends in the hollow cavity of plug handle 603.
Preferably, as shown in FIG. 8 and 9, as another embodiment, the plug handle 603 is non-full-circle spray pattern, described into sound
Hole 601 is the inside that groove type is distributed in block 602；The sound inlet 601 passes through the binding site of plug handle 603 and block 602,
Extend to the non-full circle position of plug handle 603；By the sound inlet 601 and the plug handle 603 of non-full-circle spray pattern, by the conduction chamber
102 with it is described hold together sound chamber 101 and the external world be connected.
In order to realize preferably hold together audio fruit, it is described hold together sound chamber 101 inclined-plane following diameter with it is described conduct chamber 102 it is upper
Portion's diameter is consistent, i.e., it is described hold together sound chamber 101 inclined-plane be directly connected with the conduction chamber 102.
Meanwhile in order to ensure that the plug handle 603 of dustproof cover 6 can reliably be filled in the conduction chamber 102, the conduction chamber
102 top, i.e., with the position that is in contact of plug handle 603, be designed to the 603 matched face of plug handle, can be on
The consistent cylinder of lower diameter；It can also be the taper that upper diameter is small, lower diameter is big, facilitate filling in for the plug handle 603；
Can also be the taper that upper diameter is big, lower diameter is small, after the plug handle 603 is filled in, spring expanding prevents unexpected de-
It falls；Even other bumps is complex-curved, mainly facilitates plug handle 603 to fill in, and prevent it from falling off.
It is the another embodiment of cock body 1 as shown in Figure 10,11, the cock body 1 equally has sound chamber 101 and passes
Guide cavity 102；The outer surface of the cock body 1 is divided into 3 sections of positions, is irregular polyhedrons end 103, polyhedron design side respectively
Just muffler ontology is held；Intermediate thinner connector 104, and fill in end 105；It is described to fill in the generally conical design of end 105,
The cone outside diameter conveniently filled in mating earplug body, while filling in end 105 is more than the diameter of connector 104, exists in this way
By muffler by fill in end 105 fill in mating earplug body after, due to connector 104 diameter be less than fill in end 105 cone
Body outside diameter facilitates earplug intracoelomic cavity to block muffler herein, the reliability for contributing to muffler to install.
As shown in Figures 12 and 13, the present embodiment also provides a kind of noise reduction earplug, has 5 groups of above-mentioned muffler 4 and earplug body
It closes；The nearly ear end of the muffler 4 is inserted in the filling in hole of the earplug body 5, and the internal diameter for filling in hole is less than institute
State the outer diameter at the nearly ear end of muffler 4；There is earplug body 5 one or more layers fin, flexible plastic cement to be made, and can effectively be bonded ear
Road makes external sound wave that can only can be just transmitted into the ear after muffler filters.
Although the foregoing describe specific embodiment of the present utility model, it will be appreciated by those of skill in the art that
These are merely examples, and the scope of protection of the utility model is defined by the appended claims.Those skilled in the art
Member can make these embodiments numerous variations or repair under the premise of without departing substantially from the principles of the present invention and essence
Change, but these change and modification each fall within the scope of protection of the utility model.
Claims (12)
1. a kind of muffler, which is characterized in that it includes a cock body and a stopper, and the remote ear end of the cock body is equipped with sound chamber,
It is described hold together sound chamber edge there is outwardly extending chamfering, conduction chamber is offered in the cock body, described in the conduction chamber is placed in
Hold together the rear side of sound chamber, the conduction chamber is a cylinder or reverse taper, and the conduction intracavitary plug is equipped with stopper, the stopper and institute
It states conduction chamber to fit, the stopper is a cylinder or cone, and the outer surface of the stopper is provided in the axial direction with one and runs through
Slot, the inner surface of slot and the conduction chamber on the outer surface of the stopper forms noise rejection chamber.
2. muffler as described in claim 1, which is characterized in that it is described hold together sound chamber and the junction setting of the conduction chamber it is anti-
Dirt lid, the dustproof cover are fitted closely on the cock body or being sticked on the cock body, and at least one is offered on the dustproof cover
A sound inlet, the sound inlet are distributed in the surface of the dustproof cover, and by it is described hold together sound chamber be connected with the conduction chamber.
3. muffler as claimed in claim 2, which is characterized in that the dustproof cover is in mushroom, and the dustproof cover has phase
To larger block and relatively thin resilient plug handle, the resilient plug handle is mutually fixed with the block, and the block is covered in institute
The outside of conduction chamber is stated, the resilient plug handle stretches into and is clamped on the conduction intracavitary, and the sound inlet extends from the block
To in the resilient plug handle, and by it is described hold together sound chamber be connected with the conduction chamber.
4. muffler as claimed in claim 3, which is characterized in that the inner cavity of the resilient plug handle be it is hollow, it is described into sound
Hole is the inside that groove type is distributed in the block, and the sound inlet passes through the binding site of the resilient plug handle and the block
And it extends in the hollow cavity of the resilient plug handle.
5. muffler as claimed in claim 3, which is characterized in that the resilient plug handle is non-full-circle spray pattern, and the sound inlet is
Groove type is distributed in the inside of the block, and the sound inlet passes through the binding site of the resilient plug handle and the block and prolongs
It extends in the resilient plug handle.
6. muffler as described in claim 1, which is characterized in that the conduction chamber is reverse taper, and the stopper is cone,
The cone gradient of the stopper is equal to the chamber cones gradient of the conduction chamber；Alternatively, the conduction chamber is cylinder, the plug
Stick is cone；Alternatively, the conduction chamber is cone, the stopper is cylinder；The conduction chamber and the stopper are
Cylinder.
7. muffler as described in claim 1, which is characterized in that the big end of the conduction chamber is nearly ear end, small end is remote ear
End, the big end of the stopper is nearly ear end, small end is remote ear end, and the outside diameter of the conduction chamber is 0.5~4mm, the biography
The end diameter of guide cavity is 0.5~4mm, and the length of the conduction chamber is 5~25mm.
8. muffler as claimed in claim 7, which is characterized in that the outside diameter of the conduction chamber is 2mm, the conduction chamber
End diameter be 1.8mm, it is described conduction chamber length be 12mm.
9. muffler as claimed in claim 8, which is characterized in that the internal diameter phase of the diameter of the stopper and the conduction chamber
Match, the length of the stopper is 1mm-25mm.
10. muffler as described in claim 1, which is characterized in that the depth of the slot is 0.01~0.5mm.
11. muffler as described in claim 1, which is characterized in that the outer surface of the cock body is in three-stage, is not advise respectively
Then polyhedron end, intermediate connecting body and end is filled in, it is described to fill in end generally taper, the cone outside diameter for filling in end
More than the diameter of the intermediate connecting body.
12. a kind of noise reduction earplug, which is characterized in that it includes the muffler and ear as described in any one of claim 1-11
Cock body, the earplug body have one or more layers fin, and what the nearly ear end of the muffler was inserted in the earplug body fills in hole
Interior, the internal diameter for filling in hole is less than the outer diameter at the nearly ear end of the muffler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721301332.9U CN207638829U (en) | 2017-09-30 | 2017-09-30 | Muffler and noise reduction earplug including it |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721301332.9U CN207638829U (en) | 2017-09-30 | 2017-09-30 | Muffler and noise reduction earplug including it |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207638829U true CN207638829U (en) | 2018-07-20 |
Family
ID=62858267
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721301332.9U Active CN207638829U (en) | 2017-09-30 | 2017-09-30 | Muffler and noise reduction earplug including it |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207638829U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107517422A (en) * | 2017-09-30 | 2017-12-26 | 江阴思安塑胶防护科技有限公司 | Muffler and the noise reduction earplug for including it |
| CN116492138A (en) * | 2023-06-28 | 2023-07-28 | 江苏佰家丽新材料科技股份有限公司 | Earplug and electronic equipment |
-
2017
- 2017-09-30 CN CN201721301332.9U patent/CN207638829U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107517422A (en) * | 2017-09-30 | 2017-12-26 | 江阴思安塑胶防护科技有限公司 | Muffler and the noise reduction earplug for including it |
| CN107517422B (en) * | 2017-09-30 | 2024-04-02 | 江阴思安塑胶防护科技有限公司 | Muffler and noise reduction earplug comprising same |
| CN116492138A (en) * | 2023-06-28 | 2023-07-28 | 江苏佰家丽新材料科技股份有限公司 | Earplug and electronic equipment |
| CN116492138B (en) * | 2023-06-28 | 2023-11-14 | 江苏佰家丽新材料科技股份有限公司 | Earplug and electronic equipment |
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