CN100475458C - Pneumatic reciprocating tool - Google Patents
Pneumatic reciprocating tool Download PDFInfo
- Publication number
- CN100475458C CN100475458C CNB2006101729226A CN200610172922A CN100475458C CN 100475458 C CN100475458 C CN 100475458C CN B2006101729226 A CNB2006101729226 A CN B2006101729226A CN 200610172922 A CN200610172922 A CN 200610172922A CN 100475458 C CN100475458 C CN 100475458C
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- China
- Prior art keywords
- piston
- cartridge
- fixed axis
- along
- reciprocating tool
- 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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- 230000002093 peripheral effect Effects 0.000 claims description 20
- 230000007246 mechanism Effects 0.000 claims description 13
- 238000007789 sealing Methods 0.000 claims description 7
- 230000008878 coupling Effects 0.000 claims description 6
- 238000010168 coupling process Methods 0.000 claims description 6
- 238000005859 coupling reaction Methods 0.000 claims description 6
- 238000006073 displacement reaction Methods 0.000 claims description 6
- 230000001105 regulatory effect Effects 0.000 description 4
- 238000007599 discharging Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
Images
Classifications
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D49/00—Machines or devices for sawing with straight reciprocating saw blades, e.g. hacksaws
- B23D49/10—Hand-held or hand-operated sawing devices with straight saw blades
- B23D49/16—Hand-held or hand-operated sawing devices with straight saw blades actuated by electric or magnetic power or prime movers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27B—SAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR
- B27B19/00—Other reciprocating saws with power drive; Fret-saws
- B27B19/02—Saws with a power- driven blade chucked at both ends or at one end only, e.g. jig saws, scroll saws
- B27B19/04—Saws with a power- driven blade chucked at both ends or at one end only, e.g. jig saws, scroll saws characterised by power drive, e.g. by electromagnetic drive
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
- Sawing (AREA)
- Portable Power Tools In General (AREA)
Abstract
In a pneumatic reciprocating tool, even exerting lateral load on tool keeping in the front, reciprocating movement is also realized successfully. The pneumatic reciprocating tool has a dead axle (14) in the casing (12) extending from rear side to front of the casing; a cylinder-shaped first piston (18) capable of sliding along the dead axle; a second piston (20) mounted on the front end side of the first piston; a tool keeping part (22) connecting to the second piston drive; compressed air supply passage supplying compressed air to the first piston and the second piston by the dead axle. The first piston (18) has a first cylinder-shaped part (18a), a second cylinder-shaped part (18b) and an o-shaped ring (18c), in which, the first cylinder-shaped part has inner circumference face sliding joint with outer circumference face of the dead axle, the second cylinder-shaped part matches to the first cylinder-shaped part and slides joint with the second piston in the axis direction, o-shaped ring is set between the first and the second cylinder-shaped parts and is sealed between them.
Description
Technical field
The present invention relates to the Pneumatic reciprocating tools such as hand-held saw that drive by compressed air.
Background technology
For this Pneumatic reciprocating tool, developed the instrument of various structures, instrument as one of them example is provided with: tubular shell, the fixed axis that extends forward along the axis direction of this housing from the rear end of this housing, along this fixed axis first piston slidably, be arranged on the front of this first piston and have second piston that receives the recess of first piston along axis direction slidably, and the instrument holding member that is connected with this second piston actuated; The compressed air feed path that extends by this axis along fixed axis is supplied between first and second piston compressed air so that drive two pistons (for example, referring to patent documentation 1).
In this reciprocating tool,, can carry out their alignings with respect to fixed axis by being slidably engaged of first piston and fixed axis and being slidably engaged of second piston and this first piston.
But, for example, under the situation of the instrument that remains in front end, be applied on second piston, first piston and the fixed axis by saw in the transverse load of right angle orientation with respect to the axis of fixed axis for saw.Therefore, in having the instrument of said structure, can worry: because this transverse load, resistance to sliding and the resistance to sliding between first piston and the fixed axis between the first piston and second piston are excessive, thereby can not carry out the slip between these parts smoothly.
Patent documentation: the spy opens 2005-205514
Summary of the invention
The object of the invention is to provide a kind of Pneumatic reciprocating tool that can overcome the above problems, even this instrument is remaining under the situation that has applied transverse load on the instrument of front end, still can successfully carry out the slip each other of first and second pistons and fixed axis.
That is, the invention provides a kind of Pneumatic reciprocating tool, it is characterized in that:
This Pneumatic reciprocating tool is provided with:
The housing of tubular,
The fixed axis that in this housing, forwards extends from the rear end side of this housing,
Along this fixed axis first piston of tubular slidably,
Second piston, this second piston along the axis direction of this fixed axis and this first piston coupling be arranged on the front of this first piston,
Be connected with this second piston actuated and keep the instrument holding member of instrument in the front of this housing,
Forwards to first force application mechanism of this first piston application of force,
Rearward to second force application mechanism of this second piston application of force and
Be supplied to compressed air feed path between this first and second piston by this fixed axis and with compressed air;
This first and second piston engages slidably along this axis direction, and utilization compressed and supplied air between them is resisted this first and second force application mechanism respectively and is rearward driven this first and second piston with the place ahead, and, has the exhaust passage, described exhaust passage is arranged to: when this first and second piston leaves prescribed distance, can be supplied to the compressed air between this first and second piston to the outside drain of this housing;
This first piston has first cartridge and second cartridge, wherein, described first cartridge has the inner peripheral surface that the outer peripheral face with this fixed axis is slidably engaged, described second cartridge is arranged on this second piston side with respect to described first cartridge, and along this axis direction and this first cartridge coupling, and can be with respect to this fixed axis along its radial direction displacement;
This first and second piston is to carry out between this second cartridge of this first piston and this second piston along being slidably engaged of this axis direction;
This first force application mechanism is forwards to the first cartridge application of force, then via this first cartridge forwards to the second cartridge application of force,
This compressed air rearward drives this second cartridge, then rearward drives first cartridge via this second cartridge.
Promptly, in this Pneumatic reciprocating tool, owing to guarantee the aligning of first piston with respect to the slipper of the axis of this fixed axis by the inner peripheral surface of this first cartridge and being slidably engaged of outer peripheral face of fixed axis, therefore, even applying on second piston under the situation of transverse load, second cartridge of first piston tilts to keep the smooth slip between these parts with second piston according to its transverse load, simultaneously, first cartridge of the first piston that links to each other with these parts is not subjected to the influence of transverse load, can keep the smooth slip with fixed axis.
In an object lesson, be provided with and be set between this first and second cartridge and the sealing ring that between these two parts, seals.In addition, this first and second cartridge has respectively along this axis direction first and second circumferentias toward each other, and the sealing ring is clamped between this first and second circumferentia.
In another object lesson, the place ahead part of first cartridge in the first piston cooperates along this axis direction with the rear part of second cartridge, and the sealing ring cooperates and is clamped in each other along between radial direction this place ahead part and the side face of this rear part in opposite directions.
More particularly, this of this first piston second cartridge has the inner peripheral surface of diameter greater than this first cartridge inner peripheral surface, and with the concentric mode of this fixed axis be set in this fixed axis around.
In this case, by strengthening the internal diameter of second cartridge, applying under the situation of transverse load, this second cartridge and second piston can tilt together.
In addition, as other form, this of this first piston second cartridge can forwards extend from the front position of fixed axis or the position in this front position the place ahead.
That is,, can not produce cooperating of this second cartridge and fixed axis, therefore,, can not interfere yet with fixed axis even this second cartridge tilts by setting second cartridge in this way.
According to the present invention, even apply transverse load being installed on the instrument of front end, this transverse load still can not act on first cartridge of the first piston that is slidably engaged with fixed axis, therefore, can keep the smooth slip of this first fixed part on fixed axis, simultaneously, because second cartridge of first piston together tilts according to transverse load with second piston, therefore, can keep smooth slip between these parts.
Description of drawings
Fig. 1 is the longitudinal sectional drawing of Pneumatic reciprocating tool of the present invention.
Fig. 2 is the longitudinal sectional drawing of the major part of reciprocating tool among Fig. 1.
Fig. 3 is a longitudinal sectional drawing, and it has shown the major part of other embodiment that relates to Pneumatic reciprocating tool of the present invention.
Fig. 4 is a longitudinal sectional drawing, and it has shown other embodiment that relates to Pneumatic reciprocating tool of the present invention.
The specific embodiment
Below, the embodiment of the Pneumatic reciprocating tool when sawing being applicable in the present invention with reference to accompanying drawing is elaborated.
As shown in Figure 1, Pneumatic reciprocating tool 10 of the present invention have tubular shell 12, the fixed axis 14 that extends forward along the axis direction of this housing from the rear end of this housing, along this fixed axis 14 slidably tubular first piston 18, be arranged on second piston 20 and tool retainer 22 on these first piston 18 front, this tool retainer links to each other with this second piston 20 and passes the front end of described housing 12 and extend forward along axis direction, and keeps the instrument (not shown) at front end.
Fixed axis 14 is fixed on the back-end component 28 of closure casing 12 rear ends, has compressed air feed path 32, its compressed air introduction channel 30 reception compressed air from this back-end component 28, extending and being communicated with not shown compressor, and compressed air is supplied between first and second pistons 18,20.In compressed air feed path 32, be provided with ball valve 34, and, its can the open position of opening described compressed air feed path 32 (Fig. 1) and this this open position more be engaged to by a side seal of described housing 12 front ends described compressed air feed path 32 fore-ends with the closed position of closing this compressed air feed path 32 between displacement, this valve body 34 is by being arranged on the compression spring 36 in the compressed air feed path 32, to the closed position to these valve body 34 application of forces.Relative therewith, be fixed on the rear end and compressed air feed path 32 couplings and outstanding of the tool retainer 22 on described second piston 20 to the rear of second piston 20, thereby form with the motion of first and second piston 18,20 and handle the valve opening and closing operations portion 38 that valve body 34 opens and closes.
Between the outer peripheral face of the inner peripheral surface of housing 12 and second piston 20, tubular exhaust outlet packaged unit 44 is set, and makes it can be along the axis direction displacement of housing 12.Fixedly connected pin 50 on this exhaust outlet packaged unit 44, this connecting pin 50 are passed in the perforation slotted hole 46 that its axis direction of housing 12 upper edges extends to form, to be slidably engaged with the endless groove 53 that is installed in the tubular regulating part 52 on housing 12 outer peripheral faces.This regulating part 52 is threadably engaged on the outer peripheral face of housing 12, and helical rotation on this housing 12 is regulated thereby can carry out displacement along the axis direction of housing 12 to exhaust outlet packaged unit 44 via connecting pin 50.Promptly, exhaust outlet packaged unit 44 is passing through the compressed air-driven first and second piston 18,20 o'clock, along with forwards driving second piston 20, can seal exhaust outlet 20b-1～20b-4 in turn, therefore, by regulating the position of this exhaust outlet packaged unit 44 at axis direction, can change the compressed-air actuated exhaust outlet of space drainage from 18,20 in first and second piston.Specifically, more exhaust outlet packaged unit 44 is set in position near the left side, just can carry out compressed-air actuated discharging by the exhaust outlet of the side that keeps left among first to fourth exhaust outlet 20b-1～20b-4 more, therefore, can finish driving as early as possible, drive stroke thereby can shorten by this compressed air realization.
From the compressed air of exhaust outlet discharging by the inner space 40 between housing 12 and the fixed axis 14 and be formed on the outside that exhaust passage 42 back-end component 28 is disposed to housing 12.
In this Pneumatic reciprocating tool 10, even will be installed in the instrument of front end, for example when being applied with transverse load by being pressed on the machined object, also this transverse load can be applied on the first cartridge 18a of the first piston 18 that is slidably engaged with fixed axis 14, therefore, can keep the smooth slip of this first cartridge 18a on fixed axis 14, simultaneously, because the second cartridge 18b of first piston 18 together tilts according to transverse load with second piston 20, therefore, can keep smooth slip between them.
In addition, in Fig. 1 and Fig. 2, reference number 55 is O shape ring, and 44a is the force application mechanism (helical spring) that is used to prevent that exhaust outlet packaged unit 44 is loosening, and 57 are depicted as the switch block that can open or close compressed air introduction channel 30 on back-end component 28 along the axis direction displacement.
In Fig. 3, shown the critical piece of other embodiment that relates to Pneumatic reciprocating tool of the present invention.
In this Pneumatic reciprocating tool 10, the place ahead part of the first cartridge 18a in the first piston 18 cooperates along this axis direction with the rear part of the second cartridge 18b, and with this O shape ring 18c be clamped in cooperate and each other radial direction in opposite directions described the place ahead part and the side face of rear part between 18a-2,18b-2.Other structure is identical in fact with above-mentioned first embodiment.
In Fig. 4, shown other embodiment that relates to Pneumatic reciprocating tool of the present invention.
In this Pneumatic reciprocating tool 10, to set the second cartridge 18b of first piston 18 near the mode of forwards extending the front end of fixed axis 14.
In this reciprocating tool, because the second cartridge 18b of first piston 18 sets with respect to fixed axis 14 in the above described manner, therefore, can not form cooperating of this second cartridge and fixed axis, so, even the 3rd piston 20 tilts, when also the second cartridge 18b also tilts therewith, also can not interfere with fixed axis 14 because of transverse load together.Compare with the pressure type reciprocating tool of first embodiment, except the aspect that holds second piston 20 slidably and exhaust outlet 20b only be one need not the aspect of exhaust outlet packaged unit 44 so that need not ball valve 34 the aspect and be provided with between second piston and the first piston buffer 59 aspect, other structure is all identical in fact.
Claims (6)
1. Pneumatic reciprocating tool is characterized in that:
This Pneumatic reciprocating tool is provided with:
The housing of tubular,
The fixed axis that in this housing, forwards extends from the rear end side of this housing,
Along this fixed axis first piston of tubular slidably,
Second piston, this second piston along the axis direction of this fixed axis and this first piston coupling be arranged on the front of this first piston,
Be connected with this second piston actuated and keep the instrument holding member of instrument in the front of this housing,
Forwards to first force application mechanism of this first piston application of force,
Rearward to second force application mechanism of this second piston application of force and
Be supplied to compressed air feed path between this first and second piston by this fixed axis and with compressed air;
This first and second piston engages slidably along this axis direction, and utilize between them the compressed and supplied air to resist this first and second force application mechanism respectively and rearward reach the place ahead and drive this first and second piston, and, has the exhaust passage, described exhaust passage is arranged to: when this first and second piston leaves prescribed distance, can be supplied to the compressed air between this first and second piston to the outside drain of this housing;
This first piston has first cartridge and second cartridge, wherein, described first cartridge has the inner peripheral surface that the outer peripheral face with this fixed axis is slidably engaged, described second cartridge is arranged on this second piston side with respect to described first cartridge, and along this axis direction and this first cartridge coupling, and can be with respect to this fixed axis along its radial direction displacement;
This first and second piston is to carry out between this second cartridge of this first piston and this second piston along being slidably engaged of this axis direction;
This first force application mechanism is forwards to the first cartridge application of force, then via this first cartridge forwards to the second cartridge application of force,
This compressed air rearward drives this second cartridge, then rearward drives first cartridge via this second cartridge.
2. Pneumatic reciprocating tool according to claim 1 is characterized in that: be provided with and be set between this first and second cartridge and with the sealing ring that seals between them.
3. Pneumatic reciprocating tool according to claim 2 is characterized in that: this first and second cartridge has respectively along this axis direction first and second circumferentias toward each other, and the sealing ring is clamped between this first and second circumferentia.
4. Pneumatic reciprocating tool according to claim 2, it is characterized in that: the place ahead part of first cartridge in the first piston cooperates along this axis direction with the rear part of second cartridge, and the sealing ring is clamped in and is fitted to each other and along between radial direction this place ahead part and the side face of this rear part in opposite directions.
5. according to any described Pneumatic reciprocating tool in the claim 1～4, it is characterized in that: this of this first piston second cartridge has the inner peripheral surface of diameter greater than this first cartridge inner peripheral surface, and with the concentric mode of this fixed axis be set in this fixed axis around.
6. according to any described Pneumatic reciprocating tool in the claim 1～4, it is characterized in that: this of this first piston second cartridge forwards extends from the front position of fixed axis or from the position in this front position the place ahead.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2005287573 | 2005-09-30 | ||
| JP2005287573A JP4551302B2 (en) | 2005-09-30 | 2005-09-30 | Pneumatic reciprocating tool. |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1970242A CN1970242A (en) | 2007-05-30 |
| CN100475458C true CN100475458C (en) | 2009-04-08 |
Family
ID=38025925
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006101729226A Active CN100475458C (en) | 2005-09-30 | 2006-09-29 | Pneumatic reciprocating tool |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP4551302B2 (en) |
| KR (1) | KR100755216B1 (en) |
| CN (1) | CN100475458C (en) |
| TW (1) | TW200726604A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6533386B2 (en) | 2014-12-25 | 2019-06-19 | 日東工器株式会社 | Air tool |
| WO2018180832A1 (en) * | 2017-03-29 | 2018-10-04 | 日東工器株式会社 | Compressed-air-driven chisel |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1263806A (en) * | 1999-02-01 | 2000-08-23 | S·P·空气株式会社 | Reciprocating pneumatic saw |
| CN1276748A (en) * | 1997-10-21 | 2000-12-13 | 比亚克斯－马施恩有限公司 | Hand-held tool with linear oscillating drive |
| CN2496607Y (en) * | 2001-08-07 | 2002-06-26 | 黄幸滋 | Reciprocating pneumatic tool structure |
| CN1406703A (en) * | 2001-09-10 | 2003-04-02 | 株式会社空研 | Pneumatic saw |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE416901C (en) * | 1979-03-30 | 1985-09-23 | Atlas Copco Ab | PNEUMATIC BATTERY MECHANISM |
| JPS5837537Y2 (en) * | 1979-12-28 | 1983-08-24 | 室本鉄工株式会社 | Pneumatic tools such as metal saws |
| JPS60106701U (en) * | 1983-12-24 | 1985-07-20 | 日東工器株式会社 | saw machine |
| US5003938A (en) * | 1989-12-26 | 1991-04-02 | Magnavox Government And Industrial Electronics Company | Pneumatically powered valve actuator |
| JPH0744302Y2 (en) * | 1990-09-04 | 1995-10-11 | 花園工具株式会社 | Pneumatic tool |
| KR200233200Y1 (en) | 2001-03-08 | 2001-10-06 | 송완근 | Hammer used engine |
| JP4671608B2 (en) * | 2004-01-21 | 2011-04-20 | 日東工器株式会社 | Pneumatic reciprocating tool. |
-
2005
- 2005-09-30 JP JP2005287573A patent/JP4551302B2/en active Active
-
2006
- 2006-09-22 TW TW095135205A patent/TW200726604A/en unknown
- 2006-09-29 CN CNB2006101729226A patent/CN100475458C/en active Active
- 2006-09-29 KR KR1020060095673A patent/KR100755216B1/en active IP Right Grant
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1276748A (en) * | 1997-10-21 | 2000-12-13 | 比亚克斯－马施恩有限公司 | Hand-held tool with linear oscillating drive |
| CN1263806A (en) * | 1999-02-01 | 2000-08-23 | S·P·空气株式会社 | Reciprocating pneumatic saw |
| CN2496607Y (en) * | 2001-08-07 | 2002-06-26 | 黄幸滋 | Reciprocating pneumatic tool structure |
| CN1406703A (en) * | 2001-09-10 | 2003-04-02 | 株式会社空研 | Pneumatic saw |
Also Published As
| Publication number | Publication date |
|---|---|
| TW200726604A (en) | 2007-07-16 |
| CN1970242A (en) | 2007-05-30 |
| JP2007098478A (en) | 2007-04-19 |
| TWI324099B (en) | 2010-05-01 |
| KR20070037393A (en) | 2007-04-04 |
| JP4551302B2 (en) | 2010-09-29 |
| KR100755216B1 (en) | 2007-09-04 |
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| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |