CN105307822A - Air tool - Google Patents
Air tool Download PDFInfo
- Publication number
- CN105307822A CN105307822A CN201480034943.4A CN201480034943A CN105307822A CN 105307822 A CN105307822 A CN 105307822A CN 201480034943 A CN201480034943 A CN 201480034943A CN 105307822 A CN105307822 A CN 105307822A
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- CN
- China
- Prior art keywords
- air supply
- resettlement section
- described air
- discharge hoses
- blast pipe
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
- B25F5/00—Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
- B25F5/005—Hydraulic driving means
Abstract
[Problem] To provide an air tool in which an exhaust pipe is configured so as to reduce cooling of a housing due to adiabatic expansion of exhaust air. [Solution] An air tool that is driven by an air motor (12) is provided with: a tool housing (20) comprising an air motor housing part (21) which houses the air motor (12), and a cylindrical feed/exhaust pipe housing part (24) which extends from the air motor housing part (21) to a rear open end (22); and a feed pipe (41) and an exhaust pipe (42) which are disposed in the feed/exhaust pipe housing part (24) of the tool housing (20). In this air tool, the exhaust pipe (42) and the feed/exhaust pipe housing part (24) are formed separately. Further, a gap is formed between the exhaust pipe (42) and the feed/exhaust pipe housing part (24) to thereby improve a heat insulating property between the exhaust pipe (42) and the feed/exhaust pipe housing part (24).
Description
Technical field
The present invention relates to and utilize compressed air to drive the pneumatic tool of air motor.
Background technology
As this pneumatic tool, exist and drive the rotation of ring-type grinding strip to carry out the band grinding tool (patent document 1) of grinding operation, carry out the impact type pneumatic impact spanner (patent document 2) etc. of the terminal operation of bolt etc.In such pneumatic tool, the air supply pipe forming air feed stream is arranged in the housing of formation grip part, and this air feed stream is used for built-in air motor supply compressed air.In addition, the space formed between housing and air supply pipe is used as exhaust flow path, this exhaust flow path is for discharging the compressed air of discharging from air motor.
At first technical literature
Patent document
Patent document 1: Japan Patent No. 4912976 publication
Patent document 2: Japanese Unexamined Patent Publication 2001-138267 publication
Summary of the invention
The problem that invention will solve
In pneumatic tool as described above, there is heat insulation expansion in the compressed air after just discharging from air motor and its temperature declines, therefore the part of the collecting air motor of housing is cooled, and the compressed air after temperature declines is by exhaust flow path, and the part of the formation exhaust flow path of housing is also cooled thus.The grip part that housing fabrication process person holds in operation, therefore operator has to continue to hold the housing turned cold.Especially wait in the winter time and be also as cold as the degree that just cannot not continue operation with gloves sometimes, therefore likely damage workability significantly.In addition, because exhaust is directly flowed in housing, the working oil that comprises of compressed air of therefore discharging from air motor drains to outside and grip part of easily making dirty from the gap of housing or seam, also may damage workability thus.
So one object of the present invention is, a kind of mode with the cooling of the housing caused by the heat insulation expansion reducing exhaust is provided to be formed the pneumatic tool of blast pipe.In addition, another object of the present invention is, provides a kind of with the pneumatic tool avoiding the working oil mode drained in the grip part of housing to be formed blast pipe.
For the scheme of technical solution problem
That is, the invention provides a kind of pneumatic tool driven by air motor,
This pneumatic tool possesses:
Tool housing, it has the air motor resettlement section of accommodating described air motor and the discharge hoses resettlement section extending to the tubular of rearward openings end from this air motor resettlement section, described air motor resettlement section has and supplies compressed-air actuated compressed air inlet to described air motor and discharge compressed-air actuated compressed air outlet from described air motor, and described compressed air inlet and described compressed air outlet are to described discharge hoses resettlement section inner opening;
Air supply pipe, it is configured in the inside of the described discharge hoses resettlement section of described tool housing, and has and to be positioned near described rearward openings end and to receive from the compressed-air actuated air supply inlet of compressed air supply source, the air supply outlet be communicated with described compressed air inlet and the air feed stream extending to described air supply outlet from described air supply inlet; And
Blast pipe, it is configured in the inside of the described discharge hoses resettlement section of described tool housing, and have be communicated with described compressed air outlet exhaust entrance, to be positioned near described rearward openings end and the air exit that compressed air is discharged to the outside of described discharge hoses resettlement section and the exhaust flow path extending to described air exit from described exhaust entrance
Described blast pipe and described discharge hoses resettlement section split are formed.
In this pneumatic tool, the discharge hoses resettlement section split being configured at blast pipe in tool housing and tool housing is formed, therefore, it is possible to avoid the situation that tool housing directly cools by cooled exhaust because of heat insulation expansion, the situation that tool housing turns cold can be suppressed thus.In addition, be externally vented because exhaust does not directly contact with discharge hoses resettlement section, therefore can also prevent the working oil in discharged compressed air from draining to outside situation from the gap of discharge hoses resettlement section.
Can preferably, described blast pipe configures in the mode forming gap between itself and the sidewall of described discharge hoses resettlement section.
By arranging gap between blast pipe and discharge hoses resettlement section, the effect of heat insulation between blast pipe and discharge hoses resettlement section can be improved, thus the cooling of the tool housing that the exhaust of heat insulation expansion can be suppressed further to cause.
Can be preferably, described blast pipe engages with described discharge hoses resettlement section at its part place and is supported by this discharge hoses resettlement section, at least one party in a part for this blast pipe and the described discharge hoses resettlement section that engages with this part is provided with recess, thus forms gap between a part for this blast pipe and the described discharge hoses resettlement section engaged with this part.
Engaged with discharge hoses resettlement section by blast pipe, thus discharge hoses resettlement section is supported by blast pipe, therefore, it is possible to improve the rigidity of tool housing, and owing to forming above-mentioned gap, therefore, it is possible to suppress the cooling of discharge hoses resettlement section.
Can preferably, described air supply pipe and described discharge hoses resettlement section split are formed, and described air supply pipe configures in the mode forming gap between itself and the sidewall of described discharge hoses resettlement section.
Because air supply pipe and blast pipe are all formed with the split of discharge hoses resettlement section, be therefore compared to the situation that air supply pipe and blast pipe and discharge hoses resettlement section are integrally formed, can easily manufacture.In addition, owing to being formed with gap between air supply pipe and the sidewall of discharge hoses resettlement section, therefore, it is possible to avoid the situation by being cooled due to compressed-air actuated heat insulation expansion along with blast pipe and the situation that tool housing directly cools by cooled air supply pipe.
Can preferably, described air supply pipe and described blast pipe are integrally formed.
Due to air supply pipe and exhaust pipe-shaped integral and become a component, therefore, it is possible to assembling when making manufacture is easy.
Can also preferably, the described air supply outlet of described air supply pipe is positioned at the top of the described exhaust entrance of described blast pipe, and the described air supply inlet of described air supply pipe is positioned at the described air exit position on the lower than described blast pipe,
The described air feed stream of described air supply pipe is extend substantially linearly from described air supply inlet to described air supply outlet,
Namely the described blast pipe mid portion had between described exhaust entrance and described air exit is divided into the first mid portion and second mid portion of two, left and right, and this first mid portion and the second mid portion extend in the mode of clamping described air supply pipe from both sides.
At this, " top ", " below " refer to and " air motor resettlement section " are set to the position relationship that " discharge hoses resettlement section " is also set as situation about extending to general horizontal direction rear from this air motor resettlement section by anterior position, not represent position relationship during this air tool use.
By the air supply inlet of the air supply pipe be connected with compressed air supply source being set to the lower position of air exit, thus can avoid making exhaust encounter the air hose hung down from air supply inlet.In addition, because air feed stream is substantially linear, therefore, it is possible to will suppress less to pressure loss during air motor supply compressed air.In addition, because the mid portion of blast pipe is formed in the mode of clamping air supply pipe from both sides, therefore compared with the situation making mid portion entirety extend through a side side of the air supply pipe linearly extended, the bending of exhaust flow path can be reduced while the flowing path section area of this middle part guaranteeing exhaust flow path, can flow path resistance be suppressed.
Or also can be, the described air supply outlet of described air supply pipe is positioned at the below of the described exhaust entrance of described blast pipe, the described air supply inlet of described air supply pipe is positioned at the below of the described air exit of described blast pipe, described air feed stream and described exhaust flow path parallel deployment.
Can preferably, described pneumatic tool also possesses: the first containment member, and it is configured between the described air supply outlet of described air supply pipe and the described compressed air inlet of described tool housing; And second containment member, it is configured between the described exhaust entrance of described blast pipe and the described compressed air outlet of described tool housing,
Described air supply pipe and described blast pipe are inserted in described discharge hoses resettlement section with the direction being approximate right angle relative to described air feed stream and described exhaust flow path and are configured in this discharge hoses resettlement section,
The end face of the described air supply outlet of described air supply pipe tilts relative to this direction in the mode facing described direction, the mode that the face of described first containment member abutted with the end face of this air supply outlet engages with the end face seal of the described air supply outlet with the described air supply pipe inserted tilts relative to described direction
The end face of the described exhaust entrance of described blast pipe tilts relative to this direction in the mode facing described direction, and the mode that the face of described second containment member abutted with the end face of described air exit engages with the end face seal of the described exhaust entrance with the described blast pipe inserted tilts relative to described direction.
According to this structure, when air supply pipe and blast pipe are installed on tool housing, along with by air supply pipe and blast pipe, to be approximate right angle relative to air feed stream and exhaust flow path, direction is inserted in the discharge hoses resettlement section of tool housing, first and second containment member is gradually reduced by air supply outlet and exhaust entrance respectively.Thus, compared with situation about not tilting with air supply outlet, exhaust entrance and each containment member, reduce the sliding friction of each containment member, thus reduce the possibility damaging each containment member because of friction.In addition, owing to diminishing at air supply pipe and the frictional resistance that produces between blast pipe and each containment member, because of this reduce air supply pipe and blast pipe are inserted into tool housing discharge hoses resettlement section in time required power, assembleability also improves.
Can preferably, described pneumatic tool also possesses valve, and this valve is configured in described air supply pipe, for carrying out opening and closing to described air feed stream.
Can also preferably, described pneumatic tool also possesses valve control member, and this valve control member does not extend in described air feed stream through described exhaust flow path from the outside of described air supply pipe, and engages with described valve,
By from this valve control member of described peripheral operation, thus carry out the opening and closing operations of described valve.
Because valve control member is arranged in the mode not through exhaust flow path, therefore without the need to arranging the seal construction sealed with valve control member in exhaust flow path, structure can be simplified.
Below, based on accompanying drawing, air tool embodiment involved in the present invention is described.
Accompanying drawing explanation
Fig. 1 is the air tool side view involved by the first embodiment of the present invention.
Fig. 2 is the sectional view at the II-II line place of Fig. 1.
Fig. 3 is the sectional view at the III-III line place of Fig. 2.
Fig. 4 is the sectional view at the IV-IV line place of Fig. 3.
Fig. 5 is the sectional view at the V-V line place of Fig. 2.
Fig. 6 is the sectional view at the VI-VI line place of Fig. 3.
Fig. 7 is the stereogram of discharge hoses.
Fig. 8 is the air tool side view involved by the second embodiment of the present invention.
Fig. 9 is the sectional view at the IX-IX line place of Fig. 8.
Figure 10 is the sectional view at the X-X line place of Fig. 9.
Detailed description of the invention
As shown in Figures 1 and 2, the pneumatic tool 10 involved by the first embodiment of the present invention is a kind of belt-type grinding tool 10, and it possesses: the tool housing 20 of collecting air motor 12; Be fixed on the drive pulley 80 on the output shaft 14 of air motor 12; Tool housing 20 is installed on and the belt wheel support body portion 82 forwards extended in the mode covering drive pulley 80; Belt wheel support body portion 82 can be installed in the longitudinal direction slidably and the belt wheel cramp bar 84 forwards extended; And the idle pulley 86 be rotatably installed on the leading section 84-1 of this belt wheel cramp bar 84, this pneumatic tool 10 carrys out by the driving force of air motor 12 the ring-type grinding strip 87 that bogie is located between drive pulley 80 and idle pulley 86 and rotates.
As shown in Figures 2 to 4, tool housing 20 is made up of the air motor resettlement section 21 of cylindrical shape and the discharge hoses resettlement section 24 of the tubular that extends to rearward openings end 22 from this air motor resettlement section 21 towards rear.In air motor resettlement section 21, be configured with air motor 12, in discharge hoses resettlement section 24, be configured with the discharge hoses 40 with this tool housing 20 split.As shown in Figure 3, in air motor resettlement section 21, to be provided with for supplying compressed-air actuated compressed air inlet 21-1 to air motor 12 to the mode of discharge hoses resettlement section 24 inner opening, in addition, the lower position of compressed air inlet 21-1 is provided with the compressed air outlet 21-2 for being discharged by the compressed air from air motor 12.Discharge hoses 40 has the structure that the air supply pipe 41 forming air feed stream 41-1 and the blast pipe 42 forming exhaust flow path 42-1 form as one, and to be connected with compressed air inlet 21-1 via containment member 50 with the air supply outlet 41-2 of the front end of air supply pipe 41 and the mode that the exhaust entrance 42-2 of the front end of blast pipe 42 is connected with compressed air outlet 21-2 via containment member 52 is configured in discharge hoses resettlement section 24.At the air supply inlet 41-3 of the rear end of air supply pipe 41, the joint 54 for connecting the air hose (not shown) be connected with compressed air supply source is installed.This joint 54 is engaged with slot 55 by the joint retaining pin 56 being inserted into the pin insertion hole 44 (Fig. 7) run through on the transverse direction of discharge hoses 40 and is retained as and can not comes off from air feed stream 41-1, and is mounted in the mode rotatable around long limit axis.Air feed stream 41-1 from air supply inlet 41-3 to air supply outlet 41-2 extends substantially linearly, thus suppress from compressed air supply source supply compressed air by time the pressure loss.Blast pipe 42 extends from the exhaust entrance 42-2 be connected with compressed air outlet 21-2 to the air exit 42-3 of top of the rearward openings end 22 being positioned at tool housing 20 in the mode of reporting to the leadship after accomplishing a task with air supply pipe 41 solid in midway.Specifically, as shown in Figure 4, mid portion 42-4 between the exhaust entrance 42-2 of blast pipe 42 and air exit 42-3 is made up of the first mid portion 42-4a and the second mid portion 42-4b being divided into two, left and right, and this first mid portion 42-4a and the second mid portion 42-4b extends in the mode of a part of clamping air supply pipe 41 from both sides and solid is reported to the leadship after accomplishing a task.Therefore, the exhaust flow path 42-1 be made up of this blast pipe 42 becomes a stream after mid portion 42-4 branches into two, merges into again such stream.By becoming such flow passage structure, compared with the situation making mid portion 42-4 be extended by the side side of air supply pipe 41 linearly extended, the bending of exhaust flow path 42-1 can be reduced while the flowing path section area at this mid portion 42-4 place guaranteeing exhaust flow path 42-1, can flow path resistance be suppressed.In addition, in the present embodiment, both sides by the air supply pipe 41 near the central authorities on the transverse direction of tool housing 20 are used as exhaust flow path 42-1, thus the width on the especially left and right directions (being viewed as above-below direction in Fig. 4) of discharge hoses 40 is suppressed less, thus the width of the discharge hoses resettlement section 24 of collecting discharge hoses 40 is suppressed less.Thus, the grip part 26 be made up of the outer peripheral face of discharge hoses resettlement section 24 is made to become compact shape.It should be noted that, in the present embodiment, tool housing 20 is resinous component, the metal component of discharge hoses 40 for being formed by casting, by configuring metal discharge hoses 40 in the discharge hoses resettlement section 24 of the formation grip part 26 in tool housing 20, also improve the rigidity of grip part 26 as described later.
As shown in Figure 5, in the air feed stream 41-1 of air supply pipe 41, be provided with for carrying out opening and closing to air feed stream 41-1 to control the valve 60 of compressed air to the supply of air motor 12.This valve 60 is made up of valve seal member 62, valve rod 63 and spring 64, this valve seal member 62 seals with the sealing surface 47 be formed in the stage portion 46 that arranges at air feed stream 41-1 and engages, this valve rod 63 extends from the rearward end 63-1 being fixed on this valve seal member 62 towards air supply outlet 41-2 side in air feed stream 41-1, and this spring 64 is set between the front end face of valve seal member 62 and joint 54 in mode valve seal member 62 being pressed on sealing surface 47 in air feed stream 41-1.This valve 60 by through be arranged at air supply pipe 41 sidewall opening 48 and the valve control member 66 extended in air feed stream 41-1 carrys out controlled opening/closing from the outside of discharge hoses 40.Specifically, valve control member 66 to insert the state configuration of the leading section 63-2 of valve rod 63 in the inserting hole 66-1 being arranged at its leading section, by valve control member 66 being pressed in air feed stream 41-1, and the leading section 63-2 of valve rod 63 is pressed by the top observed in figure, thus valve rod 63 tilts, thus, valve seal member 62 tilts as shown in Figure 5 and produce gap between valve seal member 62 and sealing surface 47.The sealing of valve 60 with air feed stream 41-1 removed by producing gap between valve seal member 62 and sealing surface 47, air feed stream 41-1 becomes the state be communicated with between air supply inlet 41-3 with air supply outlet 41-2.
As shown in Figure 5, the valve lever 70 for the opening and closing for operator's operating valve 60 is configured with in the lower position of discharge hoses resettlement section 24.Centered by the pivot 72 that this valve lever 70 is installed into the inside to be positioned at discharge hoses resettlement section 24 and can pivot relative to tool housing 20, the top pressing observed in figure by the operating surface 70-1 of the outside by being exposed to tool housing 20, thus the clockwise direction observed in figure to the state in the pressing in tool housing 20 shown in Fig. 5 by the state flown out downwards from the tool housing 20 shown in Fig. 1 carries out pivot.In addition, the snap-latch surface 70-2 place that this valve lever 70 is being in the position facing discharge hoses 40 engages with the rear end face 66-2 of valve control member 66, by making this valve lever 70 pivot, valve control member 66 can be pressed in air feed stream 41-1 and open valve 60 as described above.Thread spindle 74, nut 76 and abutting member 78 is provided with at this valve lever 70, this thread spindle 74 is retained as, can slide on its long limit axis direction relative to this valve lever 70, and cannot rotate around long limit axis direction, this nut 76 screws togather with this thread spindle 74 and can rotate, and this abutting member 78 is fixed on the front end of this thread spindle 74.When making valve lever 70 pivot, this abutting member 78 abuts with the inclination bearing surface 49 of the lower external face being arranged at discharge hoses 40, carrys out the pivot scope of limiting valve lever 70 thus.In addition, rotate by making nut 76, abutting member 78 moves in the axial direction together with thread spindle 74, the pivoted position of the valve lever 70 when abutting member 78 can be regulated to abut with the inclination bearing surface 49 of discharge hoses 40 by making the change in location of abutting member 78.Like this, by the pivot scope of control valve lever 70, change valve control member 66 and be pressed into amount of movement in air feed stream 41-1, consequently, adjust the aperture of the valve 60 when being pressed into by valve lever 70.It should be noted that, in the present embodiment, valve control member 66 is set as not extending in air feed stream 41-1 through exhaust flow path 42-1, and the opening 48 therefore for being guided in air feed stream 41-1 by valve control member 66 is only arranged at air supply pipe 41 and is not arranged at blast pipe 42.Therefore, need the part of sealing to be only limitted between air supply pipe 41 relative to valve control member 66, therefore seal position and to reduce and can simplified construction, and the operability when resistance to sliding caused by containment member reduces and improves valve opening and closing.
When removing the power of operating surface 70-1 of push valve lever 70, by the active force that valve seal member 62 will be made to turn back to the spring 64 of the state that air feed stream 41-1 closes, valve lever 70 around carrying out pivot counterclockwise, thus is turned back to the state of Fig. 1 by pressing to valve control member 66.It should be noted that, under supplying compressed-air actuated situation from joint 54, compressed-air actuated pressure also becomes the power that valve seal member 62 is returned to closed state.That is, valve lever 70 is made to turn back to preoperative state (Fig. 1) by the active force of spring 64 and compressed-air actuated pressure.
Supplying compressed-air actuated state via the air hose be connected with joint 54 from compressed air supply source, when push valve lever 70 operating surface 70-1 and when valve 60 is opened, compressed air, through air feed stream 41-1 and compressed air inlet 21-1, flows in air motor 12 from air supply opening 12-1.Be supplied to the counter clockwise direction that compressed-air actuated air motor 12 observed in Fig. 3 by driving to rotate.Through flowing in exhaust flow path 42-1 from the compressed air that exhaust outlet 12-2 discharges from compressed air outlet 21-2 in air motor 12, and discharge to air from air exit 42-3 through the rearward openings end 22 of tool housing 20.The compressed air driving air motor 12 to rotate is after the firm exhaust outlet 12-2 from air motor 12 discharges, and pressure sharply declines and heat insulation expansion occurs.Because the temperature of the air after heat insulation expansion declines, therefore blast pipe 42 declined by temperature after Air flow.
As shown in Figure 6, the side of the blast pipe 42 in discharge hoses 40 is configured in discharge hoses resettlement section 24 with the state engaged with the side walls 28 of discharge hoses resettlement section 24.By being configured to by metal discharge hoses 40 engage with the discharge hoses resettlement section 24 of resinous tool housing 20, thus discharge hoses 40 is from inner side supporting tool housing 20, makes the grip part 26 of tool housing 20 have required sufficient rigidity.Be formed with multiple recess 30 at the part place engaged with blast pipe 42 of discharge hoses resettlement section 24, thus between discharge hoses 40, form space and contact area reduction.In addition, between the upper surface wall 32 and lower surface wall 34 of discharge hoses 40 and discharge hoses resettlement section 24, gap is formed.Like this, by arranging gap between discharge hoses 40 and the discharge hoses resettlement section 24 forming grip part 26, and at the part place of engaging, recess 30 being set to reduce contact area, between grip part 26 and discharge hoses 40, being difficult to transferring heat thus.That is, in the use of this pneumatic tool 10, the blast pipe 42 owing to being cooled because of compressed-air actuated heat insulation expansion can be suppressed and make the situation that grip part 26 turns cold.
As shown in Figure 2, be installed on the leading section 84-1 in belt wheel support body portion 82 of tool housing 20, be provided with the bar accepting hole 82-1 of storage belt wheel cramp bar 84.In bar accepting hole 82-1, be inserted with slip inserts 88, this slip inserts 88 is fixed on belt wheel support body portion 82 by hold-down screw 89, and this hold-down screw 89 screws togather with the screwed hole 82-2 being through to bar accepting hole 82-1 from the side in belt wheel support body portion 82.What belt wheel cramp bar 84 was inserted in slip inserts 88 has in the endoporus of round slip surface, remain and can slide along the longitudinal direction relative to belt wheel support body portion 82, be formed with the slip limiting holes 84-2 of the slotted eye shape extended along the longitudinal direction in the side of belt wheel cramp bar 84.In belt wheel support body portion 82, dog screw 90 is arranged to, insert from the side in this belt wheel support body portion 82, through slip inserts 88 through hole 88-1 and extend in the slip limiting holes 84-2 extending the slotted eye shape of specific length along the longitudinal direction of belt wheel cramp bar 84.By this dog screw 90, belt wheel cramp bar 84 is remained and does not rotate, and limit the slidably scope on the fore-and-aft direction of this belt wheel cramp bar 84.On belt wheel cramp bar 84, be formed with the spring accepting hole 84-4 extended toward the front from end face 84-3 thereafter, in this spring accepting hole 84-4, be set with the spring 92 for forwards being exerted a force by this belt wheel cramp bar 84.This spring 92 is set to, its leading section 92-1 abuts with the front end face 84-5 of spring accepting hole 84-4, and end 92-2 extends towards rear further from the rear end face 84-3 of belt wheel cramp bar 84 thereafter.At the rear of bar accepting hole 82-1, for can pivot centered by the pivot axle 94-1 that the spring support member 94 that its rear position carries out supporting is mounted to by belt wheel support body portion 82 by spring 92.When spring support member 94 is in the position shown in Fig. 2, the spring-loaded jut 94-2 of spring support member 94 engages with the spring base 96 of the rearward end 92-2 being configured at spring 92, becomes the state be compressed in by spring 92 between this spring support member 94 and belt wheel cramp bar 84.By the active force of this spring 92, the idle pulley 86 being arranged at the leading section of belt wheel cramp bar 84 is pressed into the inner peripheral surface of ring-type grinding strip 87, becomes the state being applied with regulation tension force to this ring-type grinding strip 87.When the clockwise direction making spring support member 94 observe in figure rotates about 90 degree, spring base 96 becomes not by the state that spring-loaded jut 94-2 supports, and spring 92 extends to natural length.In this condition, belt wheel cramp bar 84 is not subject to the active force of spring 92 and can rearward moves, and between idle pulley 86 and ring-type grinding strip 87, therefore produces gap, thus can dismantle ring-type grinding strip 87.It should be noted that, spring support member 94 is provided with the cover 98 covering drive pulley 80 from side, carries out pivot together with spring support member 94.
The pneumatic tool 110 involved by the second embodiment of the present invention shown in Fig. 8 to Figure 10 is compared with the pneumatic tool 10 involved by above-mentioned first embodiment, and mainly the structure of compressed-air actuated stream is different.As shown in Figure 10, in this pneumatic tool 110, the air supply outlet 141-2 of air supply pipe 141 is positioned at the below of the exhaust entrance 142-2 of blast pipe 142, the air supply inlet 141-3 of air supply pipe 141 is positioned at the below of the air exit 142-3 of blast pipe 142, air feed stream 141-1 and exhaust flow path 142-1 parallel deployment.Be accompanied by this, the compressed air inlet 121-1 of tool housing 120 is contrary with the pneumatic tool 10 involved by the first embodiment with the position of compressed air outlet 121-2.That is, compressed air inlet 121-1 is positioned at the below of compressed air outlet 121-2.The compressed air supplied from the air supply inlet 141-3 of air supply pipe 141 enters in this air motor 112 through air feed stream 141-1 and air supply inlet 141-3 from the air entry 112-1 of air motor 112, while the counter clockwise direction flowing observed in figure in air motor 112, air motor 112 is driven to rotate to this direction.The flowing and arrive in exhaust flow path 142-1 from compressed air outlet 121-2 clockwise towards reversion and in the annular flow path 112-3 in outside being formed at air motor 112 that the compressed air of discharging from the exhaust outlet 112-2 of air motor 112 makes it flow, externally discharges from air exit 142-3.
As shown in Figure 9, tool housing 120 is made up of right part 120-1, left part 120-2 and cover 120-3, under the state of dismounting left part 120-2 and cover 120-3, discharge hoses 140 is be that to be inserted into the discharge hoses resettlement section 124 of right part 120-1 interior and configure for the direction D (right direction) of approximate right angle relative to air feed stream 141-1 and exhaust flow path 142-1.
The first containment member 150 is configured with between the air supply outlet 141-2 and the compressed air inlet 121-1 of tool housing 120 of air supply pipe 141.Equally, between the exhaust entrance 142-2 and the compressed air outlet 121-2 of tool housing 120 of blast pipe 142, the second containment member 152 is also configured with.As shown in Figure 9, the end face 141-4 of the air supply outlet 141-2 of air supply pipe 141 tilts relative to this direction D in the mode facing above-mentioned direction D, and the face 151 abutted with the air supply outlet 141-2 of the first containment member 150 tilts too.In addition, although not shown, the end face 142-4 of the exhaust entrance 142-2 of blast pipe 142 and the face 153 abutted with the exhaust entrance 142-2 of the second containment member 152 tilt too.Thus, along with discharge hoses 140 is inserted in the discharge hoses resettlement section 124 of the right part 120-1 of tool housing 120 along above-mentioned direction D, each face 151,153 of first and second containment member 150,152 and each distance between end face 141-4,142-4 of discharge hoses 140 diminish gradually, finally make each face 151,153 of first and second containment member 150,152 abut with each end face 141-4,142-4 of discharge hoses 140.Then, when inserting discharge hoses 140 further, first and second containment member 150,152 is gradually reduced by each end face 141-4,142-4 of discharge hoses 140, when discharge hoses 140 is configured in the position of the regulation of the discharge hoses resettlement section 124 of tool housing 120, becomes first and second containment member 150,152 and seal with each end face 141-4,142-4 of discharge hoses 140 state engaged respectively.In this embodiment, discharge hoses 140 is inserted into right part 120-1, but also can be inserted into left part 120-2.In this case, direction D becomes left direction.In addition, also tool housing 120 can not be carried out left and right segmentation and split up and down, thus discharge hoses 140 is inserted in the discharge hoses resettlement section 124 of tool housing 120 along the vertical direction.
It should be noted that, also can adopt the structure be tightly connected between above-mentioned discharge hoses 140 in the second embodiment and the first containment member 150 and the second containment member 152 in the pneumatic tool 10 of the first embodiment.In addition in the above-described embodiment, the component that the first containment member 150 and the second containment member 152 are integrated, but also can be independently component.
In the pneumatic tool 10,110 involved by above-mentioned embodiment, arranged by tool housing 20,120 split of the discharge hoses 40,140 of pressure-air cooling and formation grip part 26,126, therefore the thermal insulation between discharge hoses 40,140 and tool housing 20,120 improves, and avoids the compressed air declined due to the temperature because of heat insulation expansion grip part 26,126 directly to be cooled.Thereby, it is possible to suppress the situation that grip part 26,126 turns cold.In addition, directly define in the existing pneumatic tool of air feed stream and exhaust flow path in the usual tool housing be made up of multiple component, the seam of each component is formed stream as seal construction, but in the present embodiment, by discharge hoses 40, 140 are set to and are formed with air feed stream 41-1, 141-1 and exhaust flow path 42-1, an independently component of 142-1, therefore the sealing position minimizing compared with the past in the stream that passes through of compressed air, thus can simplified construction, and the working oil that compressed air and this compressed air comprises can be reduced spill from hermetic unit.
It should be noted that, in the above-described embodiment, by the discharge hoses 40,140 that air supply pipe 41,141 and blast pipe 42,142 are integrally constituted, but also air supply pipe 41,141 can be configured to different components from blast pipe 42,142.In addition, about pneumatic tool 10,110 involved in the present invention, grinding tool 10,110 is illustrated for example as taped, but this pneumatic tool 10,110 is not limited to belt-type grinding tool, also can adopt other the pneumatic tool such as impact type pneumatic impact spanner.
Symbol description
Pneumatic tool (belt-type grinding tool) 10; Air motor 12; Air supply opening 12-1; Exhaust outlet 12-2; Output shaft 14; Tool housing 20; Air motor resettlement section 21; Compressed air inlet 21-1; Compressed air outlet 21-2; Rearward openings end 22; Discharge hoses resettlement section 24; Grip part 26; Side walls 28; Recess 30; Upper surface wall 32; Lower surface wall 34; Discharge hoses 40; Air supply pipe 41; Air feed stream 41-1; Air supply outlet 41-2; Air supply inlet 41-3; Blast pipe 42; Exhaust flow path 42-1; Exhaust entrance 42-2; Air exit 42-3; Mid portion 42-4; First mid portion 42-4a; Second mid portion 42-4b; Pin insertion hole 44; Stage portion 46; Sealing surface 47; Opening 48; Inclination bearing surface 49; Containment member 50; Containment member 52; Joint 54; Slot 55; Joint retaining pin 56; Valve 60; Valve seal member 62; Valve rod 63; Rearward end 63-1; Leading section 63-2; Spring 64; Valve control member 66; Inserting hole 66-1; Rear end face 66-2; Valve lever 70; Operating surface 70-1; Snap-latch surface 70-2; Pivot 72; Thread spindle 74; Nut 76; Abutting member 78; Drive pulley 80; Belt wheel support body portion 82; Bar accepting hole 82-1; Screwed hole 82-2; Belt wheel cramp bar 84; Leading section 84-1; Slip limiting holes 84-2; Rear end face 84-3; Spring accepting hole 84-4; Front end face 84-5; Idle pulley 86; Ring-type grinding strip 87; Slip inserts 88; Through hole 88-1; Hold-down screw 89; Dog screw 90; Spring 92; Leading section 92-1; Rearward end 92-2; Spring support member 94; Pivot axle 94-1; Spring-loaded jut 94-2; Spring base 96; Cover 98;
Pneumatic tool (belt-type grinding tool) 110; Air motor 112; Air entry 112-1; Exhaust outlet 112-2; Annular flow path 112-3; Tool housing 120; Right part 120-1; Left part 120-2; Cover 120-3; Compressed air inlet 121-1; Compressed air outlet 121-2; Discharge hoses resettlement section 124; Grip part 126; Discharge hoses 140; Air supply pipe 141; Air feed stream 141-1; Air supply outlet 141-2; Air supply inlet 141-3; End face 141-4; Blast pipe 142; Exhaust flow path 142-1; Exhaust entrance 142-2; Air exit 142-3; End face 142-4; First containment member 150; Face 151; Second containment member 152; Face 153; Direction D.
Claims (13)
1. a pneumatic tool, it is driven by air motor,
This pneumatic tool possesses:
Tool housing, it has the air motor resettlement section of accommodating described air motor and the discharge hoses resettlement section extending to the tubular of rearward openings end from this air motor resettlement section, described air motor resettlement section has and supplies compressed-air actuated compressed air inlet to described air motor and discharge compressed-air actuated compressed air outlet from described air motor, and described compressed air inlet and described compressed air outlet are to described discharge hoses resettlement section inner opening;
Air supply pipe, it is configured in the inside of the described discharge hoses resettlement section of described tool housing, and has and to be positioned near described rearward openings end and to receive from the compressed-air actuated air supply inlet of compressed air supply source, the air supply outlet be communicated with described compressed air inlet and the air feed stream extending to described air supply outlet from described air supply inlet; And
Blast pipe, it is configured in the inside of the described discharge hoses resettlement section of described tool housing, and have be communicated with described compressed air outlet exhaust entrance, to be positioned near described rearward openings end and the air exit that compressed air is discharged to the outside of described discharge hoses resettlement section and the exhaust flow path extending to described air exit from described exhaust entrance
Described blast pipe and described discharge hoses resettlement section split are formed.
2. pneumatic tool according to claim 1, wherein,
Described blast pipe configures in the mode forming gap between itself and described discharge hoses resettlement section.
3. pneumatic tool according to claim 1, wherein,
Described blast pipe engages with described discharge hoses resettlement section at its part place and is supported by this discharge hoses resettlement section, at least one party in a part for this blast pipe and the described discharge hoses resettlement section that engages with this part is provided with recess, thus forms gap between a part for this blast pipe and the described discharge hoses resettlement section engaged with this part.
4. pneumatic tool according to claim 1, wherein,
Described air supply pipe and described discharge hoses resettlement section split are formed, and described air supply pipe configures in the mode forming gap between itself and the sidewall of described discharge hoses resettlement section.
5. pneumatic tool according to claim 4, wherein,
Described air supply pipe and described blast pipe are integrally formed.
6. pneumatic tool according to claim 5, wherein,
The described air supply outlet of described air supply pipe is positioned at the top of the described exhaust entrance of described blast pipe, and the described air supply inlet of described air supply pipe is positioned at the described air exit position on the lower than described blast pipe,
The described air feed stream of described air supply pipe is extend substantially linearly from described air supply inlet to described air supply outlet,
Namely the described blast pipe mid portion had between described exhaust entrance and described air exit is divided into the first mid portion and second mid portion of two, left and right, and this first mid portion and the second mid portion extend in the mode of clamping described air supply pipe from both sides.
7. pneumatic tool according to claim 5, wherein,
The described air supply outlet of described air supply pipe is positioned at the below of the described exhaust entrance of described blast pipe, and the described air supply inlet of described air supply pipe is positioned at the below of the described air exit of described blast pipe,
Described air feed stream and described exhaust flow path parallel deployment.
8. pneumatic tool according to claim 1, wherein,
Described blast pipe configures in the mode forming gap between itself and described discharge hoses resettlement section,
Described blast pipe engages with described discharge hoses resettlement section at its part place and is supported by this discharge hoses resettlement section, at least one party in a part for this blast pipe and the described discharge hoses resettlement section that engages with this part is provided with recess, thus gap is formed between a part for this blast pipe and the described discharge hoses resettlement section engaged with this part
Described air supply pipe and described discharge hoses resettlement section split are formed, and described air supply pipe configures in the mode forming gap between itself and the sidewall of described discharge hoses resettlement section,
Described air supply pipe and described blast pipe are integrally formed,
The described air supply outlet of described air supply pipe is positioned at the top of the described exhaust entrance of described blast pipe, and the described air supply inlet of described air supply pipe is positioned at the described air exit position on the lower than described blast pipe,
The described air feed stream of described air supply pipe is extend substantially linearly from described air supply inlet to described air supply outlet,
Namely the described blast pipe mid portion had between described exhaust entrance and described air exit is divided into the first mid portion and second mid portion of two, left and right, and this first mid portion and the second mid portion extend in the mode of clamping described air supply pipe from both sides.
9. pneumatic tool according to claim 1, wherein,
Described blast pipe configures in the mode forming gap between itself and described discharge hoses resettlement section,
Described blast pipe engages with described discharge hoses resettlement section at place of one portion and is supported by this discharge hoses resettlement section, at least one party in a part for this blast pipe and the described discharge hoses resettlement section that engages with this part is provided with recess, thus gap is formed between a part for this blast pipe and the described discharge hoses resettlement section engaged with this part
Described air supply pipe and described discharge hoses resettlement section split are formed, and described air supply pipe configures in the mode forming gap between itself and the sidewall of described discharge hoses resettlement section,
Described air supply pipe and described blast pipe are integrally formed,
The described air supply outlet of described air supply pipe is positioned at the below of the described exhaust entrance of described blast pipe, and the described air supply inlet of described air supply pipe is positioned at the below of the described air exit of described blast pipe,
Described air feed stream and described exhaust flow path parallel deployment.
10. the pneumatic tool according to any one of claim 4 to 9, wherein,
Described pneumatic tool also possesses:
First containment member, it is configured between the described air supply outlet of described air supply pipe and the described compressed air inlet of described tool housing; And
Second containment member, it is configured between the described exhaust entrance of described blast pipe and the described compressed air outlet of described tool housing,
Described air supply pipe and described blast pipe are inserted in described discharge hoses resettlement section with the direction being approximate right angle relative to described air feed stream and described exhaust flow path and are configured in this discharge hoses resettlement section,
The end face of the described air supply outlet of described air supply pipe tilts relative to this direction in the mode facing described direction, the mode that the face of described first containment member abutted with the end face of this air supply outlet engages with the end face seal of the described air supply outlet with the described air supply pipe inserted tilts relative to described direction
The end face of the described exhaust entrance of described blast pipe tilts relative to this direction in the mode facing described direction, and the mode that the face of described second containment member abutted with the end face of described air exit engages with the end face seal of the described exhaust entrance with the described blast pipe inserted tilts relative to described direction.
11. pneumatic tools according to any one of claim 1 to 9, wherein,
Described pneumatic tool also possesses valve, and this valve is configured in described air supply pipe, for carrying out opening and closing to described air feed stream.
12. pneumatic tools according to claim 11, wherein,
Described pneumatic tool also possesses valve control member, and this valve control member does not extend in described air feed stream through described exhaust flow path from the outside of described air supply pipe, and engages with described valve,
By from this valve control member of described peripheral operation, thus carry out the opening and closing operations of described valve.
13. pneumatic tools according to claim 10, wherein,
Described pneumatic tool also possesses:
Valve, it is configured in described air supply pipe, for carrying out opening and closing to described air feed stream; And
Valve control member, its outside from described air supply pipe does not extend in described air feed stream through described exhaust flow path, and engages with described valve,
By from this valve control member of described peripheral operation, thus carry out the opening and closing operations of described valve.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2013-133982 | 2013-06-26 | ||
| JP2013133982 | 2013-06-26 | ||
| PCT/JP2014/066815 WO2014208589A1 (en) | 2013-06-26 | 2014-06-25 | Air tool |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105307822A true CN105307822A (en) | 2016-02-03 |
| CN105307822B CN105307822B (en) | 2018-05-18 |
Family
ID=52141921
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201480034943.4A Active CN105307822B (en) | 2013-06-26 | 2014-06-25 | Pneumatic tool |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP3015225B1 (en) |
| JP (1) | JP6185585B2 (en) |
| KR (1) | KR101921391B1 (en) |
| CN (1) | CN105307822B (en) |
| TW (1) | TWI568549B (en) |
| WO (1) | WO2014208589A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108883512A (en) * | 2016-03-11 | 2018-11-23 | 日东工器株式会社 | Belt-type grinding tool |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01171781A (en) * | 1987-12-26 | 1989-07-06 | Nakanishi Shika Kikai Seisakusho:Kk | Air tool connection device |
| JP2002505623A (en) * | 1998-04-20 | 2002-02-19 | スナップ−オン ツールズ カンパニー | Interchangeable grip for power hand tools |
| CN1396855A (en) * | 2000-01-27 | 2003-02-12 | S.P.空气株式会社 | Pneumatic rotary tool |
| TW200524706A (en) * | 2003-07-08 | 2005-08-01 | Nitto Kohki Co | Hand-held endless belt abrading machine |
| JP2006289607A (en) * | 2006-08-03 | 2006-10-26 | Nitto Kohki Co Ltd | Striking tool |
| CN1873234A (en) * | 2005-05-30 | 2006-12-06 | 日立工机株式会社 | Air tool |
| CN101636246A (en) * | 2007-02-09 | 2010-01-27 | 日东工器株式会社 | Endless belt grinding tool |
| CN101801613A (en) * | 2007-07-31 | 2010-08-11 | 日东工器株式会社 | Air tool |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4660329A (en) * | 1980-10-20 | 1987-04-28 | Hutchins Manufacturing Company | Powered abrading tool |
| JPH07314315A (en) * | 1994-05-27 | 1995-12-05 | Uriyuu Seisaku Kk | Exhaust temperature drop preventing mechanism of air motor |
| SE503847C2 (en) * | 1994-10-10 | 1996-09-16 | Atlas Copco Tools Ab | Handle for a pneumatic power tool |
| JP2001138267A (en) | 1999-11-16 | 2001-05-22 | Kuken:Kk | Silencing device of air tool |
| JP3910944B2 (en) * | 2003-07-08 | 2007-04-25 | 日東工器株式会社 | Hand-held endless belt-driven cutting tool |
| JP3826133B2 (en) * | 2003-12-16 | 2006-09-27 | 日東工器株式会社 | Belt grinding tool |
| JP2008088933A (en) * | 2006-10-04 | 2008-04-17 | Max Co Ltd | Air motor and pneumatic tool with air motor |
| US20090258584A1 (en) * | 2008-04-10 | 2009-10-15 | X'pole Precision Tools, Inc. | Multi-Shell Air-Tight Compartmentalized Casings |
-
2014
- 2014-06-25 KR KR1020167001644A patent/KR101921391B1/en active IP Right Grant
- 2014-06-25 JP JP2015524077A patent/JP6185585B2/en active Active
- 2014-06-25 CN CN201480034943.4A patent/CN105307822B/en active Active
- 2014-06-25 WO PCT/JP2014/066815 patent/WO2014208589A1/en active Application Filing
- 2014-06-25 EP EP14818561.4A patent/EP3015225B1/en active Active
- 2014-06-26 TW TW103122067A patent/TWI568549B/en active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01171781A (en) * | 1987-12-26 | 1989-07-06 | Nakanishi Shika Kikai Seisakusho:Kk | Air tool connection device |
| JP2002505623A (en) * | 1998-04-20 | 2002-02-19 | スナップ−オン ツールズ カンパニー | Interchangeable grip for power hand tools |
| CN1396855A (en) * | 2000-01-27 | 2003-02-12 | S.P.空气株式会社 | Pneumatic rotary tool |
| TW200524706A (en) * | 2003-07-08 | 2005-08-01 | Nitto Kohki Co | Hand-held endless belt abrading machine |
| CN1873234A (en) * | 2005-05-30 | 2006-12-06 | 日立工机株式会社 | Air tool |
| JP2006289607A (en) * | 2006-08-03 | 2006-10-26 | Nitto Kohki Co Ltd | Striking tool |
| CN101636246A (en) * | 2007-02-09 | 2010-01-27 | 日东工器株式会社 | Endless belt grinding tool |
| CN101801613A (en) * | 2007-07-31 | 2010-08-11 | 日东工器株式会社 | Air tool |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108883512A (en) * | 2016-03-11 | 2018-11-23 | 日东工器株式会社 | Belt-type grinding tool |
| CN108883512B (en) * | 2016-03-11 | 2020-09-11 | 日东工器株式会社 | Belt type grinding tool |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2014208589A1 (en) | 2014-12-31 |
| KR20160022891A (en) | 2016-03-02 |
| JPWO2014208589A1 (en) | 2017-02-23 |
| EP3015225A1 (en) | 2016-05-04 |
| CN105307822B (en) | 2018-05-18 |
| EP3015225B1 (en) | 2018-10-17 |
| JP6185585B2 (en) | 2017-08-23 |
| TWI568549B (en) | 2017-02-01 |
| TW201524709A (en) | 2015-07-01 |
| KR101921391B1 (en) | 2018-11-22 |
| EP3015225A4 (en) | 2017-03-01 |
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