CN102814795A - Rotational speed control device of pneumatic tool and rotational speed control method of rotational speed control device - Google Patents
Rotational speed control device of pneumatic tool and rotational speed control method of rotational speed control device Download PDFInfo
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- CN102814795A CN102814795A CN2011101518781A CN201110151878A CN102814795A CN 102814795 A CN102814795 A CN 102814795A CN 2011101518781 A CN2011101518781 A CN 2011101518781A CN 201110151878 A CN201110151878 A CN 201110151878A CN 102814795 A CN102814795 A CN 102814795A
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Abstract
Disclosed are a rotational speed control device of a pneumatic tool and a rotational speed control method of the rotational speed control device. The rotational speed control device is characterized in that a forwardly rotating air inlet and a reversely rotating air inlet are arranged in a shell base; a rear cover is connected with one side of the shell seat and is provided with a forwardly rotating flow channel and a reversely rotating flow channel, the forwardly rotating flow channel is communicated with the forwardly rotating air inlet, the reversely rotating flow channel is communicated with the reversely rotating air inlet, rotating space is reserved in the forwardly rotating flow channel, and a pressure release hole communicated with the outside is arranged on one side of the rotating space; and a rotational speed controller is arranged in the rotating space and provided with a stopper capable of closing the pressure release hole, and the opening aperture of the pressure release hole can be controlled via the rotating rotational speed controller, so that airflow flowing into the forwardly rotating flow channel can be adjusted. By the aid of the rotational speed control device and the rotational speed control method, the rotational speed can be adjusted when the pneumatic tool rotates forwardly, and the maximum rotational speed is kept when the pneumatic tool rotates reversely. Besides, the rotational speed control device is easy to assemble, and the problem of insufficient exhaust caused by affection to the cross sections of an air inlet and an exhaust channel can be avoided.
Description
Technical field
The present invention relates to a kind of pneumatic tool, particularly a kind of air tool revolution speed control device and method for controlling number of revolution thereof.
Background technology
Existing air tool arrangements for speed regulation are as shown in Figure 7; Comprise a rotating cylinder 71 and a knob 72; This rotating cylinder 71 is provided with several perforation 73, the just commentaries on classics air intake duct 74 of this air tool changement can with these rotating cylinder 71 arbitrary perforation 73 contrapositions mutually, reverse 75 of air intake ducts and stagger with this rotating cylinder 71; Whereby, when pneumatic tool was rotated in the forward, the gas of importing was adjustable because of these rotating cylinder 71 different size perforation 73 cause rotating speed (being torsion).When the pneumatic tool counter-rotating, the gas of its importing then will directly get in the reverse air intake duct 75 that switches rotating cylinder 71, and rotating speed does not promptly receive this rotating cylinder 71 respectively to bore a hole 73 restrictions and is maximum.Why the torsion no matter pneumatic tool is just being changeed is adjusted, and when switching to the reverse pattern, its rotating speed will remain on maximum rating, and the speed that unscrews screw is able to promote.But still have following problem:
Because these arrangements for speed regulation and its changement 76 are on the coaxial switch valve rod 77 that is integrated in handle, so the too much and not easy-to-assemble problem of spare part at same position is arranged.
In addition; Because of these arrangements for speed regulation and these changement 76 coaxial being arranged on this switch valve rod 77; And a grate flow channel W is arranged between this changement 76 and valve pocket 78; This changement 76 just must cooperatively interact with this switch valve rod 77 and this arrangements for speed regulation with the size of its valve pocket 78, causes the sectional area of this grate flow channel W to receive the restriction of this changement 76 and its valve pocket 78 and influence its outputting torsion value.
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 air tool revolution speed control device and method for controlling number of revolution thereof are provided; It can constitute rotating speed (torsion) when just changeing can adjust state, when reversing, then remains on the state of maximum (top) speed (torsion), and its assembling easily and can avoid influencing the sectional area of inlet and outlet passage and cause the not enough phenomenon of exhaust.
The air tool revolution speed control device of the present invention is:
A kind of air tool revolution speed control device comprises:
One is located at the intrinsic shell block of pneumatic tool, and this shell block has one is just changeing an air intake duct and a reverse air intake duct;
One bonnet; Connect with this shell block one side, this bonnet has one is just changeing the positive turn of tidal stream road that air intake duct is communicated with this, and the reverse runner that is communicated with this reverse air intake duct; And in this positive turn of tidal stream road a rotation space is arranged, and be provided with the relief hole that always passes to this bonnet outside in this rotation space one side;
One rotating speed control piece; One section is arranged in this rotation space; Another section is then exposed this pneumatic tool body exterior; And this rotating speed control piece exposes a section of this pneumatic tool body exterior and is provided with a turn-button; Rotate this turn-button and can drive this rotating speed control piece and rotate in this rotation space, this rotating speed control piece is positioned at a section of this rotation space and has a retaining portion and a balance portion, and this rotation space is recessed relatively circular-arc with respect to two opposed inner walls in this positive turn of tidal stream road; And the retaining portion of this rotating speed control piece and the outer edge surface of balance portion are circular-arc and can be respectively cooperatively interact with two circular-arc inwalls of this rotation space; And this rotating speed control piece rotates predetermined angular to make the whole of this retaining portion this relief hole of sealing or one one in this rotation space, control the pore size of the unlatching of this relief hole, to regulate the charge flow rate that is just being changeed this positive turn of tidal stream road of air intake duct entering by this.
Aforesaid air tool revolution speed control device, wherein rotation space is positioned at this positive turn of tidal stream road is just changeing the front position place of air intake duct near this.
The air tool method for controlling number of revolution of the present invention is:
The present invention also provides a kind of air tool method for controlling number of revolution; In a positive turn of tidal stream road of an air tool bonnet, gases at high pressure are partly discharged with a relief hole; And in this positive turn of tidal stream road, borrow one can rotate predetermined angular the rotating speed control piece; Make the gases at high pressure that get in this positive turn of tidal stream road control the pore size of the unlatching of this relief hole by rotating this rotating speed control piece; Regulating the rotating speed of this positive turn of tidal stream road charge flow rate, and reverse runner when getting into by air tool one when the high pressure gas structural reform, do not receive the amount of the discharge gases at high pressure that this positive turn of tidal stream road adjusted and influence the rotating speed of reverse when just changeing.
The invention has the beneficial effects as follows; It can constitute rotating speed (torsion) when just changeing can adjust state; When reversing, then remain on the state of maximum (top) speed (torsion), and its assembling easily and can avoid influencing the sectional area of inlet and outlet passage and cause the not enough phenomenon of exhaust.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the present invention is further specified.
Fig. 1 is a perspective exploded view of the present invention.
Fig. 2 is the sectional perspective profile after the present invention assembles.
Fig. 3 is the section plan after the present invention assembles.
Fig. 4 is a user mode sketch map of the present invention, shows the maximum speed when pneumatic tool is just changeing.
Fig. 5 is a user mode sketch map of the present invention, shows that the rotating speed adjustable when pneumatic tool is just changeing is whole.
Fig. 6 is another user mode sketch map of the present invention, shows the state when pneumatic tool reverses.
Fig. 7 is the structure chart of existing pneumatic tool arrangements for speed regulation.
The specific embodiment
Seeing also Fig. 1～Fig. 3, is that air tool revolution speed control device provided by the present invention mainly is made up of shell block 21, a bonnet 41 and 51 of the rotating speed control pieces be located in the body 11, wherein:
This body 11 has an accommodation space 12; Body 11 bottoms and one be extended with one possess inlet channel 131 and exhaust passage 132 handle 13; This inlet channel 131 expose in handle 13 bottoms one can supply to connect high-pressure gas pipeline connecting portion 133, there are several exhaust outlets 134 132 of this exhaust passages.
This shell block 21 is hollow tube-shape and is located in the accommodation space 12 of this body 11; This shell block 21 is provided with a motor sub-assembly 22; These shell block 21 bottoms also are provided with a storage tank 23; And this storage tank 23 inwalls one side is provided with one and is communicated to this shell block 21 outside just commentaries on classics air intake ducts 24 and reverses air intake duct 25 with one, is provided with several in addition in these shell block 21 tops and bores a hole 211.
One switches set 31 is to be located at these handle 13 tops and to be positioned at this shell block 21 belows, this switches set 31 have one can seal this handle inlet channel 131 a control part 32 and a trigger 33.Be provided with a changement 26 in the aforementioned storage tank 23, this changement 26 has a switching-over control piece 27 and gets into this and just changeing air intake duct 24 or get in this reverse air intake duct 25 to control gases at high pressure in this inlet channel 131.
This bonnet 41 docks with a side opening of this shell block 21; In present embodiment; Be provided with a liner 44 between this bonnet 41 and this shell block 21; And being concaved with one in this bonnet 41 and these shell block 21 opposing end faces is just changeing the positive turn of tidal stream road 42 that air intake duct 24 is communicated with this shell block 21, and one reverse the reverse runner 43 that air intake ducts 25 are communicated with this shell block 21, and when this is just changeing air intake duct 24 these positive turn of tidal stream roads 42 of entering, can drive this motor sub-assembly 22 forward rotation when gases at high pressure; Otherwise, can drive this motor sub-assembly 22 backwards rotation when gases at high pressure get into 43 of this reverse runners through this reverse air intake duct 24.In this positive turn of tidal stream road 42; One rotation space 421 is arranged; And this rotation space 421 is positioned at this positive turn of tidal stream road 42 is just changeing the front position place of air intake duct 24 near this; These rotation space 421 1 sides also are provided with the relief hole 422 that always passes to these bonnet 41 outsides, and the two relative inwalls of this rotation space 421 in this positive turn of tidal stream road 42 are the concave arc shapes that are recessed relatively in addition.
This rotating speed control piece 51; Be to stretch in the rotation space 421 of this bonnet 41 by these pneumatic tool body 11 outsides; And can in this rotation space 421, rotate; This rotating speed control piece 51 is positioned at a section of this rotation space 421 and has a retaining portion 52 and a balance portion 53; And the outer edge surface of the retaining portion of this rotating speed control piece 51 52 and balance portion 53 is circular-arc and can be respectively cooperatively interacts with two circular-arc inwalls of this rotation space 421, and should retaining portion 52 can rotate one one of this relief hole 422 of predetermined angular rear enclosed or all in this rotating speed control piece 51 in this rotation space 421.This rotating speed control piece 51 then is provided with the turn-button 54 that is available for users to control in exposing outside one section of this pneumatic tool body 11.Drive 52 rotations of retaining portion by rotating this turn-button 54, and change the relative position of this retaining portion 52 and this relief hole 422, and then control the pore size of the unlatching of this relief hole 422, just changeing the charge flow rate that air intake duct 24 gets into this positive turn of tidal stream road 42 to regulate by this.
See also Fig. 3, Fig. 4; When the gases at high pressure that get into this inlet channel 131 receive these changement 26 controls and during through just the changeing air intake duct 24 and get into the positive turn of tidal stream road 42 of these bonnets 41 of this shell block 21, the motor sub-assembly 22 in this shell block 21 promptly receives the promotion of these gases at high pressure and begins forward rotation.At this moment, because the retaining portion 52 of this rotating speed control piece 51 is these relief holes 422 of sealing, the gases at high pressure that therefore get into this positive turn of tidal stream road 42 are not released and are turned round with this motor sub-assembly 22 of whole gases at high pressure promotions, reach maximum speed (torsion) state.Gases at high pressure behind the promotion motor sub-assembly 22 are in regular turn through the reverse runner 43 of this bonnet 41, perforation 211 discharge sections of this shell block 21, and portion gas then reverses air intake duct 25, these exhaust passage 132 discharges through this.
Desire adjustment is air tool when just walking around speed, and the user only must rotate the turn-button 54 of this rotating speed control piece 51, and makes not exclusively these relief holes 422 of sealing of retaining portion 52.See also Fig. 3, Fig. 5; Know from experience shown in Fig. 5 dotted arrow through this high pressure gas of just changeing air intake duct 24 these positive turn of tidal stream roads 42 of entering; Have partly and release by this relief hole 422; And behind the exhaust passage 132 of this handle 13, discharge, be that scalable gets in this positive turn of tidal stream road 42 in order to promote the air inflow of this motor sub-assembly 22 whereby.And, along with the change of the rotational angle of this retaining portion 52, can change the relative position of this retaining portion 52 and this relief hole 422, and then control the pore size that this relief hole 422 is opened, constitute the whole state of rotating speed adjustable of these positive turn of tidal stream road 42 charge flow rates.
When the pneumatic tool backwards rotation; See also Fig. 3, Fig. 6; The gases at high pressure that get into this inlet channel 131 receive these changement 26 controls and get in the reverse runner 43 of these bonnets 41 through the reverse air intake duct 25 of this shell block 21; This motor sub-assembly 22 received the promotion of these gases at high pressure and began backwards rotation this moment; Promote behind this motor sub-assembly 22 gases at high pressure then in regular turn through the positive turn of tidal stream road 42 of this bonnet 41, perforation 211 discharge sections of this shell block 21, portion gas is then discharged after this is just changeing air intake duct 24, this exhaust passage 132 again.Therefore before it should be noted that because this relief hole 422 is to be located in this positive turn of tidal stream road 42,, all can remain on maximum extraction flow during reverse no matter the retaining portion 52 of this rotating speed control piece 51 is in any position when just changeing.Remove this; This relief hole 422 then becomes another auxiliary exhaust ports when the pneumatic tool backwards rotation, make pneumatic tool when backwards rotation, keep promoting the state of this motor sub-assembly 22 with the maximum speed running with whole gases at high pressure, no matter why the rotating speed that pneumatic tool is just being changeed adjusts state; When switching to the reverse pattern; Its rotating speed will remain on maximum rating, and maximum outputting torsion is arranged, and the speed that unscrews screw is able to promote.
Because revolution speed control device of the present invention separates setting with steering mechanism, switches set 31, revolution speed control device is not on the switches set 31 that is sheathed in this handle, makes assembling simpler.
Moreover, separate setting by this revolution speed control device with steering mechanism, switches set 31, therefore unlikelyly stop the inlet and outlet passage, and then the present invention is closed in the air tool demand of big torsion output.
Claims (3)
1. air tool revolution speed control device is characterized in that it comprises:
One is located at the intrinsic shell block of pneumatic tool, and this shell block has one is just changeing an air intake duct and a reverse air intake duct;
One bonnet; Connect with this shell block one side, this bonnet has one is just changeing the positive turn of tidal stream road that air intake duct is communicated with this, and the reverse runner that is communicated with this reverse air intake duct; And in this positive turn of tidal stream road a rotation space is arranged, and be provided with the relief hole that always passes to this bonnet outside in this rotation space one side;
One rotating speed control piece; One section is arranged in this rotation space; Another section is then exposed this pneumatic tool body exterior; And this rotating speed control piece exposes a section of this pneumatic tool body exterior and is provided with a turn-button; Rotate this turn-button and can drive this rotating speed control piece and rotate in this rotation space, this rotating speed control piece is positioned at a section of this rotation space and has a retaining portion and a balance portion, and this rotation space is recessed relatively circular-arc with respect to two opposed inner walls in this positive turn of tidal stream road; And the retaining portion of this rotating speed control piece and the outer edge surface of balance portion are circular-arc and can be respectively cooperatively interact with two circular-arc inwalls of this rotation space; And this rotating speed control piece rotates predetermined angular to make the whole of this retaining portion this relief hole of sealing or one one in this rotation space, control the pore size that this relief hole is opened, to regulate the charge flow rate that is just being changeed this positive turn of tidal stream road of air intake duct entering by this.
2. air tool revolution speed control device according to claim 1 is characterized in that, said rotation space is positioned at this positive turn of tidal stream road is just changeing the front position place of air intake duct near this.
3. air tool method for controlling number of revolution; It is characterized in that; In a positive turn of tidal stream road of an air tool bonnet, gases at high pressure are partly discharged with a relief hole; And in this positive turn of tidal stream road, borrow one can rotate predetermined angular the rotating speed control piece, make the gases at high pressure that get in this positive turn of tidal stream road can be by rotating the pore size that this this relief hole of rotating speed control piece control is opened, to regulate the rotating speed of this positive turn of tidal stream road charge flow rate; And when the high pressure gas structural reform reverses runner when getting into by air tool one, do not receive the amount of the discharge gases at high pressure that this positive turn of tidal stream road adjusted and influence the rotating speed of reverse when just changeing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101518781A CN102814795A (en) | 2011-06-08 | 2011-06-08 | Rotational speed control device of pneumatic tool and rotational speed control method of rotational speed control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101518781A CN102814795A (en) | 2011-06-08 | 2011-06-08 | Rotational speed control device of pneumatic tool and rotational speed control method of rotational speed control device |
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| CN102814795A true CN102814795A (en) | 2012-12-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011101518781A Pending CN102814795A (en) | 2011-06-08 | 2011-06-08 | Rotational speed control device of pneumatic tool and rotational speed control method of rotational speed control device |
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| CN (1) | CN102814795A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105500265A (en) * | 2014-09-16 | 2016-04-20 | 力肯实业股份有限公司 | Air inlet control valve group of pneumatic rotary tool |
| GB2535886A (en) * | 2015-02-27 | 2016-08-31 | Snap On Incorporated | Controlling incoming air for a multi-directional rotational motor in a single rotational direction |
| TWI584921B (en) * | 2016-06-01 | 2017-06-01 | Kuani Gear Co Ltd | Pneumatic tools for steering and transposition use |
| WO2022166564A1 (en) * | 2021-02-02 | 2022-08-11 | 张华定 | Pneumatic nailing gun with adjustable nailing force |
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| CN2594576Y (en) * | 2002-09-20 | 2003-12-24 | 方东兴 | Distributive valve with stabilized total flow |
| CN1730242A (en) * | 2004-08-06 | 2006-02-08 | 徐明伟 | Modified pneumatic trigger and production technique thereof |
| JP2006075920A (en) * | 2004-09-07 | 2006-03-23 | Kr Kogyo Kk | Pneumatic tool |
| TWM316787U (en) * | 2007-02-14 | 2007-08-11 | Sunmatch Ind Co Ltd | Air intake control structure for pneumatic tool |
| US20080047721A1 (en) * | 2006-08-23 | 2008-02-28 | Tranmax Machinery Co., Ltd. | Pressure regulating mechanism for pneumatic tool and pneumatic tool comprising the same |
| CN101837582A (en) * | 2010-04-22 | 2010-09-22 | 宁波飞驹工具有限公司 | Novel rotating speed adjusting mechanism |
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2011
- 2011-06-08 CN CN2011101518781A patent/CN102814795A/en active Pending
Patent Citations (7)
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| CN2382514Y (en) * | 1999-07-19 | 2000-06-14 | 林震阳 | Speed regulater for pneumatic tools |
| CN2594576Y (en) * | 2002-09-20 | 2003-12-24 | 方东兴 | Distributive valve with stabilized total flow |
| CN1730242A (en) * | 2004-08-06 | 2006-02-08 | 徐明伟 | Modified pneumatic trigger and production technique thereof |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105500265A (en) * | 2014-09-16 | 2016-04-20 | 力肯实业股份有限公司 | Air inlet control valve group of pneumatic rotary tool |
| CN105500265B (en) * | 2014-09-16 | 2017-08-22 | 力肯实业股份有限公司 | Air inlet control valve group of pneumatic rotary tool |
| GB2535886A (en) * | 2015-02-27 | 2016-08-31 | Snap On Incorporated | Controlling incoming air for a multi-directional rotational motor in a single rotational direction |
| GB2535886B (en) * | 2015-02-27 | 2017-09-06 | Snap On Incorporated | Controlling incoming air for a multi-directional rotational motor in a single rotational direction |
| US10328564B2 (en) | 2015-02-27 | 2019-06-25 | Snap-On Incorporated | Controlling incoming air for a multi-directional rotational motor in a single rotational direction |
| TWI584921B (en) * | 2016-06-01 | 2017-06-01 | Kuani Gear Co Ltd | Pneumatic tools for steering and transposition use |
| WO2022166564A1 (en) * | 2021-02-02 | 2022-08-11 | 张华定 | Pneumatic nailing gun with adjustable nailing force |
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Application publication date: 20121212 |