CN201295917Y - Low-noise pneumatic tool - Google Patents
Low-noise pneumatic tool Download PDFInfo
- Publication number
- CN201295917Y CN201295917Y CNU2008201770314U CN200820177031U CN201295917Y CN 201295917 Y CN201295917 Y CN 201295917Y CN U2008201770314 U CNU2008201770314 U CN U2008201770314U CN 200820177031 U CN200820177031 U CN 200820177031U CN 201295917 Y CN201295917 Y CN 201295917Y
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- CN
- China
- Prior art keywords
- sound
- absorbing spare
- wind
- exhaust duct
- facining
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- Expired - Fee Related
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Abstract
The utility model relates to a low-noise pneumatic tool which comprises a housing, a support part and a noise absorber, wherein the housing is provided with an air exhausting passage, an air inlet is positioned on the first end of the air exhausting passage, an air exhausting port is positioned on the second end of the air exhausting passage and communicated with the air exhausting passage and the outside, the support part is contained in the air exhausting passage, the noise absorber is made of a porous soft material and provided with an upwind part and at least one extending part, the upwind part is contiguous to the first end of the air exhausting passage and support against the support part, and the extending part extends out from the upwind part and is filled in the air exhausting passage, thus the noise generated by operating the utility model can be effectively lowered, and the sound absorbing effect can be maintained for a long time.
Description
Technical field
The utility model is relevant with pneumatic tool, is meant a kind of low noise pneumatic tool especially, and it can more effectively reduce the noise that when operation produces, and sound-absorbing usefulness can be kept for a long time.
Background technology
The noise that general pneumatic tool produces when operating can reach 95 decibels, and long-time use may injure operator's hearing, therefore, how not to influence the prerequisite decline low noise of pneumatic tool power output, is that industry is researched and developed improved direction always.
Owing to air tool noise mainly is to overflow by the exhaust passage, therefore, generally can in the exhaust passage, clog porous soft materials such as sponge, foaming thing or dishcloth as sound-absorbing spare, when gas passed through sound-absorbing spare, partly noise can be absorbed and reduce.Yet, since quite high by the gas flow rate of exhaust passage, can apply suitable pressure to sound-absorbing spare, after long-term the use, sound-absorbing spare often is compressed and gross distortion, makes gas be difficult for passing through, not only reduce air tool power output, the usefulness of sound-absorbing is had a greatly reduced quality.
Summary of the invention
At the problems referred to above, main purpose of the present utility model is to provide a kind of low noise pneumatic tool, the noise that produces when it can more effectively reduce operation.
Another purpose of the present utility model is to provide a kind of low noise pneumatic tool, and it still can keep sound-absorbing usefulness after long-time the use.
For achieving the above object, a kind of low noise pneumatic tool provided by the utility model is characterized in that comprising: a casing has an exhaust duct, one air inlet is positioned at one first end of described exhaust duct, and an exhaust outlet is positioned at one second end of described exhaust duct and is communicated with described exhaust duct with extraneous; One support member is placed in the described exhaust duct; One sound-absorbing spare is made by the porous soft material, has facing the wind first end of the contiguous described exhaust duct of portion and replaced by described support member, and at least one extension is extended by the described portion of facining the wind and clogs in described exhaust duct.
In the above-mentioned the technical solution of the utility model, described sound-absorbing spare is elongated.
In the above-mentioned the technical solution of the utility model, the portion of facining the wind of described sound-absorbing spare is positioned at described sound-absorbing spare central authorities, and described sound-absorbing spare has two described extensions and extended respectively by described portion's two sides of facining the wind, and described two extensions are positioned at two sides of described support member respectively.
In the above-mentioned the technical solution of the utility model, the portion of facining the wind of described sound-absorbing spare is positioned at described sound-absorbing spare one end, and the extension of described sound-absorbing spare is for being wound in outside the described support member.
In the above-mentioned the technical solution of the utility model, described sound-absorbing spare is that a casing pipe sleeve is overlying on outside the described support member, and has a blind end and an open end, and the described portion of facining the wind is positioned at described blind end.
In the above-mentioned the technical solution of the utility model, described sound-absorbing spare is cross, and the described portion of facining the wind is positioned at described sound-absorbing spare central authorities, and described sound-absorbing spare has four described extensions and extended towards the four directions by the described portion of facining the wind.
Adopt technique scheme, when air communication was crossed exhaust duct of the present utility model, noise also can be made noise be reduced to 84～87dB effectively by the reflection of the support member of hard except that can being absorbed by soft sound-absorbing spare, is present known minimum level of noise.In addition, because supported of the portion of facining the wind of sound-absorbing spare replaces, can bear stream pressure from the exhaust duct air inlet, therefore, even use through long-time, sound-absorbing spare also is unlikely and deforms or be shifted, and not only can effectively keep its sound-absorbing effect, also can not stop up exhaust duct because of the distortion of sound-absorbing spare and reduce air tool power output.
Description of drawings
Fig. 1 is the front view of the utility model first preferred embodiment;
Fig. 2 is the partial sectional view of the utility model first preferred embodiment;
Fig. 3 is the exploded view of the utility model first preferred embodiment;
Fig. 4 is the exploded view of the utility model second preferred embodiment;
Fig. 5 is the exploded view of the utility model the 3rd preferred embodiment;
Fig. 6 is the exploded view of the utility model the 4th preferred embodiment.
The specific embodiment
In order to describe structure of the present utility model, characteristics and effect in detail, existing following preferred embodiment of act and conjunction with figs. are described as follows.
As Fig. 1～shown in Figure 3, the low noise pneumatic tool 10 that the utility model first preferred embodiment is provided includes a casing 20, a pneumatic mechanism (not shown), a support member 30 and a sound-absorbing spare 32.
Pneumatic mechanism is located in the casing 20, because pneumatic mechanism is not a feature of the present utility model, holds and does not give unnecessary details at this.Casing 20 has one first end (being the top), 23, one exhaust outlets 26 that exhaust duct 22, one air inlets 25 that are positioned at handle 21 inside are positioned at exhaust duct 22 and is positioned at one second end (being the bottom) 24 of exhaust duct 22 and is communicated with exhaust duct 22 with extraneous.
Sound-absorbing spare 32 is made by porous soft material such as sponge, dishcloth etc., sound-absorbing spare 32 has the portion 34 of facining the wind, facing the wind first end 23 and supported 30 top institute contact of portion's 34 adjacent row air flues 22, two extensions 36 are extended and are positioned at two sides of support member 30 respectively by portion's 34 2 sides of facining the wind, extension 36 is packed in the exhaust duct 22, if 32 expansion of sound-absorbing spare are then elongated, as shown in Figure 3, the portion 34 of facining the wind is positioned at sound-absorbing spare 32 central authorities.
When air communication was crossed exhaust duct 22, noise also can be by support member 30 reflections of hard except that can being absorbed by soft sound-absorbing spare 32, noise can more effectively be reduced, through actual test, noise can be reduced to 84～87dB during operation, is present known minimum level of noise.In addition, because the portion 34 of facining the wind of sound-absorbing spare 32 is replaced by support member 30, can bear stream pressure from exhaust duct 22 air inlets 25, therefore, even use through long-time, sound-absorbing spare 32 also is unlikely and deforms or be shifted, not only can effectively keep its sound-absorbing effect, can be because of sound-absorbing spare 32 does not stop up the power output that exhaust duct 22 reduces pneumatic tool 10 yet, therefore, the utility model really can improve the shortcoming of conventional construction.
Based on creation spirit of the present utility model, support member 30 can be changed design with the structure of sound-absorbing spare, as shown in Figure 4, the support member 40 and the sound-absorbing spare 42 that adopt for the utility model second preferred embodiment, wherein, support member 40 is cylindric, 42 of sound-absorbing spares are strip, an end and supported 40 top that portion 44 is positioned at sound-absorbing spare 42 that facing the wind replaced, 46 of the extensions of sound-absorbing spare 42 are wound in outside the support member 40 downwards and clog in the exhaust duct (not shown), so, sound-absorbing spare 42 also can bear the pressure of air-flow in the exhaust duct and unlikely distortion.
And for example shown in Figure 5, the support member 50 and the sound-absorbing spare 52 that adopt for the utility model the 3rd preferred embodiment, wherein support member 50 also is cylindric, it is outer and have a blind end 54 and an open end 56 that sound-absorbing spare 52 is that a casing pipe sleeve is overlying on support member 50, replaced by support member 50 with blind end 54 as the portion 58 of facining the wind, 59 of extensions are extended by the portion 58 of facining the wind and clog in the exhaust duct (not shown).Thus, sound-absorbing spare 52 can bear the pressure of air-flow in the exhaust duct and unlikely distortion.
For another shown in Figure 6, the support member 60 and the sound-absorbing spare 62 that adopt for the utility model the 4th preferred embodiment, wherein support member 60 also is cylindric, sound-absorbing spare 62 is cross when launching, the portion 64 of facining the wind is positioned at sound-absorbing spare 62 central authorities, 66 of four extensions portion 64 extends towards the four directions by facining the wind and with support member 60 double teams in wherein.Thus, sound-absorbing spare 52 can bear the pressure of air-flow in the exhaust duct and unlikely distortion.
In sum; the shape of support member and sound-absorbing spare can have multiple variation; be not limited to above several embodiment that enumerate; as long as having the portion of facining the wind, sound-absorbing spare replaced by this support member; and one extension extend by this portion of facining the wind and clog in exhaust duct; no matter how its shape changes, and all should be contained by scope of patent protection of the present utility model.
Claims (6)
1, a kind of low noise pneumatic tool is characterized in that comprising:
One casing has an exhaust duct, and an air inlet is positioned at one first end of described exhaust duct, and an exhaust outlet is positioned at one second end of described exhaust duct and is communicated with described exhaust duct with extraneous;
One support member is placed in the described exhaust duct;
One sound-absorbing spare is made by the porous soft material, has facing the wind first end of the contiguous described exhaust duct of portion and replaced by described support member, and at least one extension is extended by the described portion of facining the wind and clogs in described exhaust duct.
2, low noise pneumatic tool as claimed in claim 1, it is characterized in that: described sound-absorbing spare is elongated.
3, low noise pneumatic tool as claimed in claim 2, it is characterized in that: the portion of facining the wind of described sound-absorbing spare is positioned at described sound-absorbing spare central authorities, described sound-absorbing spare has two described extensions and is extended respectively by described portion's two sides of facining the wind, and described two extensions are positioned at two sides of described support member respectively.
4, low noise pneumatic tool as claimed in claim 2 is characterized in that: the portion of facining the wind of described sound-absorbing spare is positioned at described sound-absorbing spare one end, and the extension of described sound-absorbing spare is for being wound in outside the described support member.
5, low noise pneumatic tool as claimed in claim 1 is characterized in that: described sound-absorbing spare is that a casing pipe sleeve is overlying on outside the described support member, and has a blind end and an open end, and the described portion of facining the wind is positioned at described blind end.
6, low noise pneumatic tool as claimed in claim 1, it is characterized in that: described sound-absorbing spare is cross, and the described portion of facining the wind is positioned at described sound-absorbing spare central authorities, and described sound-absorbing spare has four described extensions and is extended towards the four directions by the described portion of facining the wind.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201770314U CN201295917Y (en) | 2008-11-07 | 2008-11-07 | Low-noise pneumatic tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201770314U CN201295917Y (en) | 2008-11-07 | 2008-11-07 | Low-noise pneumatic tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201295917Y true CN201295917Y (en) | 2009-08-26 |
Family
ID=41041879
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201770314U Expired - Fee Related CN201295917Y (en) | 2008-11-07 | 2008-11-07 | Low-noise pneumatic tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201295917Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106064368A (en) * | 2015-04-20 | 2016-11-02 | 罗伯特·博世有限公司 | Machine tool device, toolroom machine and the method being used for manufacturing machine tool device |
-
2008
- 2008-11-07 CN CNU2008201770314U patent/CN201295917Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106064368A (en) * | 2015-04-20 | 2016-11-02 | 罗伯特·博世有限公司 | Machine tool device, toolroom machine and the method being used for manufacturing machine tool device |
| CN106064368B (en) * | 2015-04-20 | 2021-06-01 | 罗伯特·博世有限公司 | Machine tool device, machine tool and method for producing a machine tool device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| 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: 20090826 Termination date: 20161107 |