CN101837582B - Novel rotating speed adjusting mechanism - Google Patents
Novel rotating speed adjusting mechanism Download PDFInfo
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- CN101837582B CN101837582B CN2010101547559A CN201010154755A CN101837582B CN 101837582 B CN101837582 B CN 101837582B CN 2010101547559 A CN2010101547559 A CN 2010101547559A CN 201010154755 A CN201010154755 A CN 201010154755A CN 101837582 B CN101837582 B CN 101837582B
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- rotating speed
- sleeve
- adjusting mechanism
- speed adjusting
- stator
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Abstract
The invention discloses a rotating speed adjusting mechanism. The rotating speed adjusting mechanism comprises an air inlet joint and a rotary sleeve, wherein the front part of the air inlet joint is provided with a sleeve with a larger outside diameter, the back part of the air inlet joint is provided with a rod-shaped part with a smaller outside diameter, and steps are formed between the sleeve and the rod-shaped part; the rotary sleeve is sleeved on the outer side of the air inlet joint and can rotate relative to the air inlet joint; the front part of the rotary sleeve is a sleeve body, and the back part of the rotary sleeve is a rod body; the inner side of the sleeve body is provided with an annular step surface which is fixed with positioning plates; the steps formed between the rod-shaped part and the sleeve are sleeved and fixed with wave washers and fixed plates in turn; the wave washers, the fixed plates and the positioning plates are clamped between the steps of the air inlet joint and the step surface of the rotary sleeve in turn; and a rotary positioning mechanism is arranged between the fixed plates and the positioning plates. The rotating speed adjusting mechanism can conveniently and accurately control the flow quantity of inlet air, and the flow quantity gears are obvious, so after being used for multiple times, the rotating speed adjusting mechanism can also keep good contact and have fewer abrasions, and the service life of the rotating speed adjusting mechanism is long.
Description
Technical field
The present invention relates to a kind of air tool rotating speed adjusting mechanism.
Background technology
In the existing pneumatic tool, all reach the running speed of control air chamber rotor usually by the mode of control gas flow size, this step is accomplished by the flow controller of different structure designs; Known many rotating speed controlling organizations adopt the valve rod that is set as special shape more, are hubbed in the gas passage of pneumatic tool between between the inner inlet channel of air chamber and lever, change the gas flow in inlet channel entering air chamber again by the rotation of valve rod; To reach the purpose that changes the rotor running speed; But the used valve rod shape of this technology is special, is not simple and easy in manufacturer, and the sperm quality of its completion also difficulty keep; Moreover; Because the precision of valve rod is not good, in addition its whole rotating speed Kong child mechanism is placed on the centre position of pneumatic tool gas passage, therefore; When gases at high pressure fill in inlet channel, existing pressure will cause portion gas to produce the situation that leaks.Therefore some having occurred can make things convenient for adjustments of gas flow and the flow regulator that is easy to process simple in structure to occur; Such as Chinese patent CN2705647Y disclosed a kind of " air tool air flow control valve ", comprise that a breather pipe has a body and is formed with one first spiral shell portion, and be provided with successively that first sealing, is crossed hermetic seal portion and with second sealing; Between one air admission hole conducting to the first sealing and the mistake hermetic seal portion; One steam vent conducting has one first screw spiral shell to move the first spiral shell portion in breather pipe to crossing between the hermetic seal portion and second sealing but an air-control revolving sleeve has a body, offers one first sealing, in regular turn and crosses hermetic seal portion and one second sealing; One first seal is in order to first sealing of sealing breather pipe and first sealing of air-control revolving sleeve; One second seal is in order to second sealing and second sealing of breather pipe of sealing air-control revolving sleeve, and a control seal is in order to the hermetic seal portion of crossing of sealing air-control revolving sleeve and the hermetic seal portion of crossing of breather pipe, but conducting control gas between the movable air admission hole that makes breather pipe and steam vent when controlling seal and being used for spiral shell and moving; Such control throughput control valve; Though convenient processing, the parts more complicated, the gear control of regulation and control gas flow is not obvious; And; After of long duration, first, second, all can produce wearing and tearing and the generation gap between control seal and breather pipe, the air-control revolving sleeve, cause the instability of flow-control.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of simple in structure, flow-control gear obviously and the pneumatic tool rotating speed adjusting mechanism of long service life to above-mentioned prior art present situation.
The present invention solves the problems of the technologies described above the technical scheme that is adopted: a kind of rotating speed adjusting mechanism is characterized in that: comprise
Inlet suction port; Its front portion is the bigger sleeve of external diameter; The rear portion is the less stem of external diameter, forms step between the two, and the gas channel in the said inlet suction port is divided into mutual disconnected inlet channel and outlet passageway; The outside of stem has air admission hole that is communicated with inlet channel and the venthole that is communicated with outlet passageway, and said air admission hole and said venthole are set up in parallel along the major axis of stem;
Be placed in the said inlet suction port outside and can be with respect to the rotary sleeve of inlet suction port rotation; The front portion of said rotary sleeve is that a body rear portion is a body of rod; The inboard of said body has a circular step face and is fixed with spacer; The internal diameter of the said body of rod and the external diameter of said stem are complementary, and the said body of rod has a through hole can expose said air admission hole of part and said venthole at least;
On the step that forms between said stem and the sleeve successively socket be fixed with wave washer and stator; Said wave washer, stator and spacer are stuck between the step surface of step and rotary sleeve of inlet suction port successively, are provided with rotary positioning mechanism between said stator and the spacer.
Preferably, described through hole can expose whole said air admission hole and said venthole simultaneously, the marginal texture symmetry of said through hole, and the edge is a waveform.
More preferably; Described rotary positioning mechanism is two axisymmetric projections in the center with respect to stator that have on the face relative with said stator on six grooves that are equally spaced that have on the face relative with spacer on the said stator and the said spacer, and said projection and said groove are complementary and can be fixed each other in twos.
In order to prevent this rotating speed adjusting mechanism gas leakage, can control gas flow better, the stem of said inlet suction port is provided with groove and is socketed with little O type circle.
As a variation of the present invention, the position of described groove and said projection setting can exchange.
In order to prolong the service life of this rotating speed adjusting mechanism, the face process metal fever processed that described stator is relative with said spacer.
Compared with prior art, the invention has the advantages that and to control the flow that gets into gas easily and accurately, and the gear of gas flow size is obvious; After using repeatedly; Still can keep excellent contact, rarer wearing and tearing make this rotating speed adjusting mechanism have long service life.
Description of drawings
Fig. 1 is the exploded view of the rotating speed adjusting mechanism of the embodiment of the invention.
Fig. 2 is the sketch map after the rotating speed adjusting mechanism of the embodiment of the invention removes housing.
Fig. 3 is the cutaway view of the rotating speed adjusting mechanism of the embodiment of the invention.
Fig. 4 is the sketch map of spacer and stator in the rotating speed adjusting mechanism of the embodiment of the invention.
Fig. 5 is the sketch map of rotary sleeve in the rotating speed adjusting mechanism of the embodiment of the invention.
The specific embodiment
Embodiment describes in further detail the present invention below in conjunction with accompanying drawing.
Rotating speed adjusting mechanism of the present invention, as shown in Figure 1, comprise housing 1, inlet suction port 2, little O type circle 3, wave washer 4, stator 5, spacer 6, rotary sleeve 7 and rotary sleeve O type circle 8 compositions.Described rotary sleeve 7 front portions are the bigger body of diameter 72, and the rear portion is a body of rod 71, and the inboard of said body 72 also has a step surface and is used for ccontaining and stationary positioned sheet 6; Spacer 6 is an annular flake; Its structure is as shown in Figure 4, and the wherein one side of said spacer 6 has two locator protrusions 61, and these two locator protrusions 61 are symmetricly set in the two ends of spacer 6 central shafts; Described spacer 6 fixes with rotary sleeve 7, and has facing laterally of locator protrusions 61.
The inlet suction port 2 front portions sleeve 24 bigger that be diameter with respect to rear portion stem 25; Have a groove 23 on the described stem 25 and be used for ccontaining little O type circle 3; The rear side of stem 25 has screw thread 26; Stem 25 forms a step surface with the transition position of sleeve 24; After wave washer 4, stator 5 are placed on this stem 25 successively and are fixed on the step surface between stem 25 and the sleeve 24, put the rotary sleeve 7 of the spacer 6 of having packed into again in inlet suction port 2 outsides, wave washer 4, stator 5 and spacer 6 just in time are stuck between the step surface of step surface and rotary sleeve 7 of inlet suction port 2 successively.Like Fig. 2, shown in 3; The stem 25 of inlet suction port 2 is positioned at the body of rod 71 of rotary sleeve 7; The external diameter of the internal diameter of the body of rod 71 of rotary sleeve 7 and the stem 25 of inlet suction port 2 is complementary inlet suction port 2 and rotary sleeve 7 can be relatively rotated, and the screw thread 26 of stem 25 rear sides stretches out from rotary sleeve 7 rear sides.
Above-mentioned stator 5 also is with annular flake, and this stator 5 has 6 grooves that are equally spaced 51 in the face of on the face of spacer 6.Projection 61 on this groove 51 and the spacer 6 is complementary; Because wave washer 4 has certain elasticity; In the process of rotary sleeve 7 with respect to inlet suction port 2 rotation, in these 2 projections 61 and 6 grooves 51 two the relative position between rotary sleeve 7 and the inlet suction port 2 of being fixed that is complementary in twos.Projection 61 on the said spacer 6 has constituted a rotary positioning mechanism with the groove 51 on the said stator 5.And stator 5 is handled through METAL HEATING PROCESS with spacer 6 relative faces, even under the situation of repeatedly spin friction, this metal covering still can not wear and tear, and has increased the service life of rotating speed adjusting mechanism yet.And the number of this projection and groove and position those skilled in the art also can make the change design according to above-mentioned principle; And those skilled in the art also can adopt other rotary positioning mechanism; Such as the position of the setting that can exchange projection and groove, other rotary positioning mechanism is set between spacer 6 and stator 5.
As shown in Figure 3, the body of rod 71 of rotary sleeve 7 is placed in the outside of the stem 25 of inlet suction port 2, and stem 25 inner gas channels are divided into two mutual disconnected pipelines, are respectively admission line 27 and outlet pipe 28.Have two holes along the adjacent setting of major axis of stem 25 on the stem 25, one is that 21, one of air admission holes are venthole 22, and wherein, air admission hole 21 is communicated with admission line 27, and venthole 22 is communicated with outlet pipe 28.The through hole 73 with a symmetry of the body of rod 71 can expose air admission hole 21 and venthole 22 simultaneously; And the edge of through hole 73 is a waveform, and like Fig. 2, the position shown in 3, this through hole 73 can expose whole air admission hole 21 and venthole 22 simultaneously; Can from air admission hole 21 flow out from the air-flow that admission line 27 flows into this moment; Space through through hole 73 exposes returns from venthole 22 in the outlet pipe 28, and the flow of air-flow is maximum; When turning to certain position; The air admission hole 21 and the venthole 22 of 73 exposed portions serve of this through hole, the flow of air-flow reduces relatively, after turning over certain position again; Through hole 73 will can not expose air admission hole 21 and venthole 22; Have space owing to be not to fit fully between the body of rod 71 and the stem 25 this moment, and a spot of air-flow still can flow out from venthole 22 from the air admission hole 21 of admission line 27 and get into outlet pipe 27.Therefore, through the setting between such inlet suction port 2 and the rotary sleeve 7, can carry out the flow-control and and then the control rotating speed of air-flow.And because the groove 51 on the stator 5 on the inlet suction port 2 and the projection 61 on the spacer 6 can be mated fixing and this projection groove in twos in rotation all is that stator or spacer along annular evenly distributes; Therefore the sensation of the commentaries on classics shelves when rotation rotary sleeve 7 will be more obvious, is easy to user's control.
After inlet suction port 2 and rotary sleeve 7 installations; Again after O type circle 8 is loaded onto in the body of rod 71 outsides of rotary sleeve; Socket upper shell 1, the pneumatic tool of just can packing into uses, and certainly those skilled in the art also can be according to the shape and the size of individual's air tool structural design housing 1; Perhaps even omit this housing, directly this rotating speed adjusting mechanism is placed in the pneumatic tool.
Except that the foregoing description, the present invention also includes other embodiments, and the technical scheme that all employing equivalents or equivalent substitute mode form all should fall within the protection domain of claim of the present invention.
Claims (5)
1. a rotating speed adjusting mechanism is characterized in that: comprise
Inlet suction port (2); Its front portion is the bigger sleeve of external diameter (24); The rear portion is the less stem of external diameter (25); Form step between the two; Gas channel in the said inlet suction port (2) is divided into mutual disconnected inlet channel (27) and outlet passageway (28), and the outside of stem (25) has air admission hole (21) that is communicated with inlet channel (27) and the venthole (22) that is communicated with outlet passageway (28), and said air admission hole (21) is set up in parallel with the major axis of said venthole (22) along stem (25);
Be placed in said inlet suction port (2) outside and can be with respect to the rotary sleeve (7) of inlet suction port (2) rotation; The front portion of said rotary sleeve is a body (72); The rear portion of said rotary sleeve (7) is a body of rod (71); The inboard of said body (72) has a circular step face; This circular step face is fixed with spacer (6), and the external diameter of the internal diameter of the said body of rod (71) and said stem (25) is complementary, and the said body of rod (71) has a through hole (73) can expose said air admission hole of part (21) and said venthole (22) at least;
On the step that forms between said stem (25) and the sleeve (24) successively socket be fixed with wave washer (4) and stator (5); Said wave washer (4), stator (5) and spacer (6) are stuck between the step surface of step and rotary sleeve (7) of inlet suction port (2) successively, are provided with rotary positioning mechanism between said stator (5) and the spacer (6);
Described rotary positioning mechanism is that six grooves (51) that are equally spaced that have on upward relative with spacer (6) face of said stator (5) are gone up two axisymmetric projections in center (61) with respect to stator (5) that have on the face relative with said stator (5) with said spacer (6), and said projection (61) is complementary with said groove (5) and can be fixed each other in twos.
2. rotating speed adjusting mechanism as claimed in claim 1 is characterized in that: described through hole (73) can expose whole said air admission hole (21) and said venthole (22) simultaneously, the marginal texture symmetry of said through hole (73), and the edge is a waveform.
3. rotating speed adjusting mechanism as claimed in claim 1 is characterized in that: the stem (25) of said inlet suction port (2) is provided with groove (23) and is socketed with little O type circle (3).
4. rotating speed adjusting mechanism as claimed in claim 1 is characterized in that: described groove (51) can exchange with the position that said projection (61) is provided with.
5. like each described rotating speed regulating mechanism of claim 1-4, it is characterized in that: the face process metal fever processed that described stator (5) is relative with said spacer (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101547559A CN101837582B (en) | 2010-04-22 | 2010-04-22 | Novel rotating speed adjusting mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101547559A CN101837582B (en) | 2010-04-22 | 2010-04-22 | Novel rotating speed adjusting mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101837582A CN101837582A (en) | 2010-09-22 |
| CN101837582B true CN101837582B (en) | 2012-02-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010101547559A Expired - Fee Related CN101837582B (en) | 2010-04-22 | 2010-04-22 | Novel rotating speed adjusting mechanism |
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| CN (1) | CN101837582B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102814795A (en) * | 2011-06-08 | 2012-12-12 | 大里兴业有限公司 | Rotational speed control device of pneumatic tool and rotational speed control method of rotational speed control device |
| CN104534116B (en) * | 2014-12-31 | 2017-02-22 | 浙江瑞丰五福气动工具有限公司 | Air inlet amount adjusting device of pneumatic tool |
| CN105641793B (en) * | 2015-12-29 | 2018-06-29 | 北京怡和嘉业医疗科技股份有限公司 | For the ventilation control device of breathing mask and breathing mask equipment |
| CN114161159A (en) * | 2021-12-31 | 2022-03-11 | 宁波飞驹工具有限公司 | Two-in-one power device of air mill cutting machine |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2382514Y (en) * | 1999-07-19 | 2000-06-14 | 林震阳 | Speed regulater for pneumatic tools |
| US6634438B1 (en) * | 2001-06-01 | 2003-10-21 | Snap-On Technologies, Inc. | Pneumatic air tool with direct air path motor |
| CN2645858Y (en) * | 2003-08-19 | 2004-10-06 | 莊嘉琼 | Rotating speed adjusting mechanism of pneumatic tool |
| CN2705647Y (en) * | 2004-06-04 | 2005-06-22 | 陈秀如 | Air flow control valve for pneumatic tool |
| US7073774B2 (en) * | 2004-08-20 | 2006-07-11 | Sunmatch Industrial Co., Ltd. | Air intake adjusting assembly for pnuematic tools |
| JP2006281365A (en) * | 2005-03-31 | 2006-10-19 | Max Co Ltd | Variable throttle mechanism of pneumatic tool |
| CN101255810A (en) * | 2007-03-01 | 2008-09-03 | 镁迪企业股份有限公司 | Wind dead ahead path knob structure |
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2010
- 2010-04-22 CN CN2010101547559A patent/CN101837582B/en not_active Expired - Fee Related
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| CN101837582A (en) | 2010-09-22 |
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Granted publication date: 20120201 Termination date: 20180422 |
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