CN101885175B

CN101885175B - Air tool provided with improved silencer

Info

Publication number: CN101885175B
Application number: CN2009100688256A
Authority: CN
Inventors: 孙永勇; 陈全钦
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-05-13
Filing date: 2009-05-13
Publication date: 2011-12-07
Anticipated expiration: 2029-05-13
Also published as: CN101885175A

Abstract

The invention relates to an air tool provided with improved silencer, comprising a main case body; the rear end of the main case body is provided with a high pressure gas input screw hole, the input high pressure gas drives a pneumatic motor to operate and then is discharged from the rear end of the main case body, a cover body is covered at the rear end of the main case body and is provided with a penetrating port, a guide piece forms a guide section gradually expanding outward and is used for being penetrated in the penetrating port, an annular air exhaust space is formed between the guide section of the guide piece and the penetrating port, an air inlet adapter is connected and arranged I the screw hole, the shoulder part of the air inlet adapter is used for blocking and stopping the guide piece, so that the gas discharged by the air exhaust space can be diffused and discharged under the guidance of the guide section of the guide piece. The invention has the advantages that waste gas discharged by the air tool can not directly impact the rapid adaptor arranged at the rear end of the air tool and noise produced by air current collision can be effectively reduced.

Description

Has the pneumatic tool that improves silencing means

Technical field

The present invention relates to a kind of pneumatic tool, relate in particular to a kind of pneumatic tool that improves silencing means that has.

Background technology

Air tool operation principles is the air motor running that drives pneumatic tool inside with gases at high pressure, therefore pneumatic tool must have the exhaust outlet of air inlet that a supplied gas enters and supplied gas discharge, and general air tool vent design can be divided into the design that the gas guiding is rearward discharged, and with the design of gas guiding to the side discharge, yet, when gas is directly discharged by air tool outside, all can produce sizable noise.

And discharge the design of gas with the rear, as shown in Figure 9, when gas was discharged by a plurality of steam vents 2 at pneumatic tool 1 rear, its gas of discharging can be stopped by the support 4 between each steam vent 2 and gas be collided mutually cause sinuous flow, and and then produce exhaust noise; Moreover the gas of being discharged by pneumatic tool 1 rear more can be because of directly impacting in connecing in the snap joint 3 that is located at pneumatic tool 1 rear end, and cause exhaust noise to improve and produce sharp-pointed harshness.

For another shown in Figure 10, be existing pneumatic tool 1A with lateral row pore, though its direct impact of gas that can avoid being discharged connects (not shown) in the snap joint that is located at the pneumatic tool rear end, yet, the steam vent 2A that this kind is opened in pneumatic tool 1A one side is designed to the graticule mesh shape, therefore when the concentrated steam vent 2A by a side of gas discharges, will be identical with above-mentioned pneumatic tool with rear vent design, cause the gas of being discharged influenced by support 4A between most adjacent steam vent 2A and make gas produce sinuous flow and then bump mutually, and thereby produce sharp-pointed wind and cut sound.

No matter and discharge the pneumatic tool of gas with rear or side, though all can install the noise reduction cotton additional in this pneumatic tool inside, but it only can reduce to 82 decibels of (deci-Bell with the level of noise of pneumatic tool when waste gas is discharged at most through test, dB) about, discharge the sharp-pointed noise that is produced and still can't effectively reduce gas.

Summary of the invention

Technical problem underlying to be solved by this invention is, overcome the above-mentioned defective that prior art exists, and a kind of pneumatic tool that improves silencing means that has is provided, it has the waste gas that pneumatic tool is discharged and can directly not impact in the snap joint that is arranged in the pneumatic tool rear end, can effectively reduce because of air-flow and collide the noise that is produced.

The technical solution adopted for the present invention to solve the technical problems is:

A kind of pneumatic tool with improvement silencing means, mainly form by a casing ontology, an air motor, a bearing, a lid, a guide member and an inlet suction port, it is characterized in that: this casing ontology is to be hollow form, and this casing ontology rear end has an axial screw for the gases at high pressure input; This air motor is located at this casing ontology inside, and a jettron is located at this air motor one side, and turned round to drive this air motor by this jettron control by the gases at high pressure that this screw is imported, and the waste gas that this air motor is produced in the running back is discharged again by this casing ontology rear end; This bearing is the ring-type pedestal, and is provided with a retaining wall in this bearing, and this bearing is resisted against this casing ontology rear end with its retaining wall, and is provided with an axial through bore in the middle position of this retaining wall, is provided with several axially extending bores around this perforation; This cover cap merges and is positioned on this bearing, and is provided with one in the middle position of this lid and axially wears mouth; This guide member is in the form of a ring and has a miner diameter end and a bigger diameter end, this guide member is formed with a lead segment that is extended out gradually to this bigger diameter end by this miner diameter end, and this miner diameter end more extends a path section, and this guide member is to be arranged in wearing in the mouth of this lid with its path section, and wears the air draft space that is formed with an annular between the mouth in the lead segment of this guide member and this; This inlet suction port has a head and the whole body portion, be formed with a shoulder between this head and the body portion, and this inlet suction port with its body portion pass this guide member in regular turn, this wears mouthful and this perforation is arranged in this screw again, and when this inlet suction port is arranged in this screw, this guide member is to be socketed in the body portion of this inlet suction port with its path section correspondence, and the shoulder of this inlet suction port is the lead segment of block in this guide member.

Aforesaid pneumatic tool with improvement silencing means, wherein bearing is located at the rear end of this casing ontology with the one end plug, and this bearing is formed with a recess on the other end outer rim away from this casing ontology, and this lid is formed with a card division, and this card division correspondence is sticked on the recess of this bearing.

Aforesaid have a pneumatic tool that improves silencing means, and wherein lid is provided with this end that wears mouthful and is formed with one and wears a mouthful guide face that shrinks towards this gradually.

Aforesaid pneumatic tool with improvement silencing means, wherein more be formed with a pressure section between the shoulder of inlet suction port and the body portion, and when this inlet suction port is arranged in this screw, this pressure section is pressed against on the outside of this bearing perforation, with this bearing of packing and be fixed in this pneumatic tool rear end.

Aforesaid pneumatic tool with improvement silencing means, wherein being equipped with several around the wearing mouthful of lid is cone-shaped and towards top that this bearing direction is extended, more be installed with a noise reduction cotton between the retaining wall of this bearing and this lid, the cotton end of this noise reduction is connected on this retaining wall, and the cotton other end of this noise reduction is located by then this top.

Aforesaid have a pneumatic tool that improves silencing means, and wherein the noise reduction cotton more is provided with a dictyosome in an end that wears towards this mouthful, and this dictyosome is subjected to the top of this lid and locatees, and this dictyosome then is pressed against on this noise reduction cotton again.

The invention has the beneficial effects as follows that it has the waste gas that pneumatic tool is discharged and can directly not impact in the snap joint that is arranged in the pneumatic tool rear end, can effectively reduce because of air-flow and collide the noise that is produced.

Description of drawings

The present invention is further described below in conjunction with drawings and Examples.

Fig. 1 is an exploded schematic perspective view of the present invention

Fig. 2 is an assembled sectional view of the present invention

Fig. 3 is the partial perspective cutaway view after the present invention makes up

Fig. 4 is a user mode schematic diagram of the present invention

Fig. 5 is the exploded schematic perspective view of second embodiment of the invention

Fig. 6 is the partial sectional view after the second embodiment of the invention combination

Fig. 7 is the exploded schematic perspective view of third embodiment of the invention

Fig. 8 is the partial sectional view after the third embodiment of the invention combination

Fig. 9 is existing air tool structural representation with back to exhaust outlet

Figure 10 is existing air tool structural representation with lateral row gas port

The specific embodiment

At first see also Fig. 1 to Fig. 3, a kind of pneumatic tool that improves silencing means that has provided by the present invention, it mainly is made of a casing ontology 11, an air motor 21, a bearing 31, a lid 41, a guide member 51 and an inlet suction port 61, wherein:

This casing ontology 11 is to be hollow tubular, and has an axial screw 13 that can supply gases at high pressure to import in these casing ontology 11 rear ends 12.

This air motor 21 is to be axially set in this casing ontology 11 inside, and a jettron 22 is to be located at this air motor 21 1 sides, and by the gases at high pressure that this screw 13 is imported is to be subjected to these jettron 22 controls whether to drive this air motor 21 entrys into service with decision, and the waste gas that this air motor 21 is produced in the running back is then discharged by these casing ontology 11 rear ends 12 again.

This bearing 31 is the ring-type pedestal, and this bearing 31 is located in the rear end 12 of this casing ontology 11 with the one end plug, these bearing 31 inner edges are provided with a retaining wall 32, and this bearing 31 is to be resisted against on screw 13 outsides of this casing ontology 11 with its retaining wall 32, and be provided with an axial through bore 33 in the middle position of this retaining wall 32, and this perforation 33 is to be with this screw 13 to be oppositely arranged, and around this perforation 33, more be provided with the axially extending bore 34 that several can pass through for waste gas, and this bearing 31 is to be formed with in the form of a ring a recess 35 on the other end outer rim away from this casing ontology 11.

This lid 41 has a card division 42, and this card division 42 can corresponding be sticked on the recess 35 of this bearing 31, to make this lid 41 can be fixed on this bearing 31, and the middle position of this lid 41 is provided with one and axially wears mouthfuls 43, and this lid 41 wears end of mouthfuls 43 and is formed with one and wears mouthful 43 guide faces 44 that shrink towards this gradually in being provided with this, and wears in this and to be equipped with several around mouthfuls 43 in addition and to be cone-shaped and towards top 45 that these bearing 31 directions are extended.

This guide member 51 is in the form of a ring and has a miner diameter end 52 and a bigger diameter end 53, and be formed with a lead segment 54 that extends out gradually to this bigger diameter end 53 by this miner diameter end 52 in these guide member 51 outsides, and this miner diameter end 52 more extends a path section 521, and this guide member 51 is to be arranged in wearing in mouthfuls 43 of this lid 51 with its path section 521, and wears the air draft space 55 that is formed with an annular between the mouth 43 in the lead segment 54 of this annular guide member 51 with this.

This inlet suction port 61 has the body portion 63 that a head 62 and has screw thread, and between this head 62 and this body portion 63, be formed with a shoulder 64, more be formed with a pressure section 65 between this shoulder 64 and this body portion 63, and this inlet suction port 61 is to pass this guide member 51 in regular turn with its body portion 63, this wears mouth 43 and is arranged in this screw 13 with this perforation 33 again, and when this inlet suction port 61 is arranged in this screw 13, this guide member 51 is corresponding being socketed in the body portion 63 of this inlet suction port 61 with its path section 521, and the shoulder 64 of this inlet suction port 61 is that block is deviate to prevent this guide member 51 in these guide member 51 bigger diameter ends 53, this pressure section 65 then is pressed against on the outside of this bearing 31 perforation 33, whereby with this bearing 31 of packing and be fixed in the rear end 12 of this casing ontology 11.

Then please continue to consult Fig. 4, the present invention is when actual operation, on this inlet suction port 61, be equipped with one in order to connect the snap joint 71 of high-pressure gas pipeline and this inlet suction port 61, and when gases at high pressure are entered by this inlet suction port 61 and after driving 21 runnings of this air motor, the waste gas that it produced is to discharge towards mouthful 43 directions that wear of this lid 41 again, and when waste gas enters this lid 41 through this each through hole 34, waste gas promptly can be subjected to these lid 41 formed guide face 44 guidings and derive towards this air draft space 55 that wears the annular that is constituted between mouth 43 and this guide member 51, and then is subjected to lead segment 54 guidings of this annular guide member 51 again and air-flow is discharged with trumpet-shaped diffusion way by the waste gas that derive in this air draft space 55.

Whereby, the waste gas that pneumatic tool of the present invention rear end is discharged can evenly spread and avoid being arranged in the snap joint 71 of pneumatic tool rear end, and by pneumatic tool of the present invention the waste gas of discharging backward can directly not impact in this snap joint 71, can effectively avoid colliding the noise that is produced because of air-flow; Moreover the present invention more adopts single ringwise air draft space 55 with combustion gas by it, the noise that is caused because of the sinuous flow phenomenon in the time of therefore more can effectively reducing the waste gas discharge.

Then see also Fig. 5 and Fig. 6, it is the second embodiment of the present invention, wherein, more be installed with a noise reduction cotton 81 that can reduce exhaust noise between the retaining wall 32 of this bearing 31 and this lid 41, cotton 81 1 ends of this noise reduction are to be connected on this retaining wall 32, cotton 81 other ends of this noise reduction then are subjected to 45 location, top in this lid 41, to be positioned between this retaining wall 32 and this lid 41, and can effectively avoid noise reduction cotton 81 to be discharged airflow influence whereby and be jammed in this air draft space 55, and more can effectively reduce the level of noise that the present invention is produced when the running by the mode of setting up this noise reduction cotton 81.

In addition as shown in Figures 7 and 8, it is the third embodiment of the present invention, the difference of itself and above-mentioned second embodiment is to be, this noise reduction cotton 81 more is provided with a dictyosome 82 in an end that wears mouth 43 towards this, and this dictyosome 82 is by 45 location, the top in this lid 41, this dictyosome 82 then is pressed against on this noise reduction cotton 81 again, and reaches this noise reduction of location cotton 81 whereby and reach the identical effect with above-mentioned second embodiment.

Via the present invention of above-mentioned design, can with pneumatic tool in the level of noise in when running effectively be reduced to 75 decibels (deci-Bell, dB).

The above, it only is preferred embodiment of the present invention, be not that the present invention is done any pro forma restriction, every foundation technical spirit of the present invention all still belongs in the scope of technical solution of the present invention any simple modification, equivalent variations and modification that above embodiment did.

In sum, the present invention is on structural design, use practicality and cost benefit, it is required to meet industry development fully, and the structure that is disclosed also is to have unprecedented innovation structure, have novelty, creativeness, practicality, the regulation that meets relevant patent of invention important document is so mention application in accordance with the law.

Claims

1. one kind has the pneumatic tool that improves silencing means, mainly is made up of a casing ontology, an air motor, a bearing, a lid, a guide member and an inlet suction port, it is characterized in that:

This casing ontology is to be hollow form, and this casing ontology rear end has an axial screw for the gases at high pressure input;

This air motor is located at this casing ontology inside, and a jettron is located at this air motor one side, and turned round to drive this air motor by this jettron control by the gases at high pressure that this screw is imported, and the waste gas that this air motor is produced in the running back is discharged again by this casing ontology rear end;

This bearing is the ring-type pedestal, and is provided with a retaining wall in this bearing, and this bearing is resisted against this casing ontology rear end with its retaining wall, and is provided with an axial through bore in the middle position of this retaining wall, is provided with several axially extending bores around this perforation;

This cover cap merges and is positioned on this bearing, and is provided with one in the middle position of this lid and axially wears mouth, and described lid is provided with this end that wears mouthful and is formed with one and wears a mouthful guide face that shrinks towards this gradually;

This guide member is in the form of a ring and has a miner diameter end and a bigger diameter end, this guide member is formed with a lead segment that is extended out gradually to this bigger diameter end by this miner diameter end, and this miner diameter end more extends a path section, and this guide member is to be arranged in wearing in the mouth of this lid with its path section, and wears the air draft space that is formed with an annular between the mouth in the lead segment of this guide member and this;

This inlet suction port has a head and the whole body portion, be formed with a shoulder between this head and the body portion, and this inlet suction port with its body portion pass this guide member in regular turn, this wears mouthful and this perforation is arranged in this screw again, and when this inlet suction port is arranged in this screw, this guide member is to be socketed in the body portion of this inlet suction port with its path section correspondence, and the shoulder of this inlet suction port is the lead segment of block in this guide member.

2. the pneumatic tool with improvement silencing means according to claim 1, it is characterized in that: described bearing is located at the rear end of this casing ontology with the one end plug, and this bearing is formed with a recess on the other end outer rim away from this casing ontology, this lid is formed with a card division, and this card division correspondence is sticked on the recess of this bearing.

3. the pneumatic tool with improvement silencing means according to claim 1, it is characterized in that: more be formed with a pressure section between the shoulder of described inlet suction port and the body portion, and when this inlet suction port is arranged in this screw, this pressure section is pressed against on the outside of this bearing perforation, with this bearing of packing and be fixed in this pneumatic tool rear end.

4. the pneumatic tool with improvement silencing means according to claim 1, it is characterized in that: be equipped with several around the wearing mouthful of described lid and be cone-shaped and towards top that this bearing direction is extended, more be installed with a noise reduction cotton between the retaining wall of this bearing and this lid, the cotton end of this noise reduction is connected on this retaining wall, and the cotton other end of this noise reduction is located by then this top.

5. the pneumatic tool with improvement silencing means according to claim 4, it is characterized in that: described noise reduction cotton more is provided with a dictyosome in an end that wears mouth towards this, and this dictyosome is subjected to the top of this lid and locatees, and this dictyosome then is pressed against on this noise reduction cotton again.