EP0844052B1 - Visseuse pneumatique - Google Patents
Visseuse pneumatique Download PDFInfo
- Publication number
- EP0844052B1 EP0844052B1 EP19970402663 EP97402663A EP0844052B1 EP 0844052 B1 EP0844052 B1 EP 0844052B1 EP 19970402663 EP19970402663 EP 19970402663 EP 97402663 A EP97402663 A EP 97402663A EP 0844052 B1 EP0844052 B1 EP 0844052B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- motor
- compressed air
- intake
- rotation
- push button
- 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.)
- Expired - Lifetime
Links
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
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B21/00—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose
Definitions
- the present invention relates to a pneumatic screwdriver in accordance with the preamble of claim 1 (see GB 2 157 213).
- the present invention relates to screwdrivers having an elongated body with, at one end, a compressed air supply and, at the other end, a head intended to receive a screwing tool, the body having an articulated trigger intended to allow compressed air intake to control a pneumatic motor.
- the screwdrivers include, usually a reversal control means the direction of rotation of the motor, but this is relatively complex.
- a pneumatic tool which includes a reversibility system of the direction of rotation of the motor comprising a pallet connected to a ring located on the outside of the tool body, the palette having two openings, one of which can be placed opposite a compressed air distribution opening for the normal direction of rotation of the tool and the other can be placed opposite each other for the inversion of the sense of rotation.
- One of the aims of the invention is to remedy to these disadvantages or, more precisely, to realize a practical, reliable and less complex than those of the previous technique.
- the screwdriver is of type comprising a body with, at one end, means for connecting an air inlet pipe compressed, a pneumatic motor driving, by a kinematic link, a tool located at the other end, a mobile trigger on the body and commanding, through a distribution wall intake opening compressed air, engine intake, said wall having an exhaust opening connected by leads to an exhaust of the screwdriver and means for reversing the direction of rotation of the motor tire comprising a pusher located outside the body in the vicinity of the trigger controlling a pallet cooperating with the wall of compressed air distribution; the said distribution wall comprising a second intake opening for reversing the direction of rotation of the motor so that when said push-button is not pressed, the engine is running in the normal sense, while when requested, it controls the reversal of the direction of rotation of the motor, said screwdriver being characterized in that the pusher is movable against the action elastic means the pallet is pierced a duct in communication with the air supply compressed and opening on the distribution wall
- the pusher is integral with a sliding mounted rod in a body bore against the action of a spring of compression inserted into said bore, said rod having a notch with which a stud cooperates integral with the pallet which is guided, on the one hand, on a shoulder of the distribution wall and, on the other hand, in a throat of an element of the body.
- Figure 1 is an elevational view of a screwdriver according to the invention.
- Figure 2 is an enlarged sectional view scale of the rear end of the screwdriver of the figure 1.
- Figure 3 is a sectional view along the line 3-3 of figure 2.
- Figure 4 is a similar sectional view in Figure 3, the screwdriver being controlled for a left rotation.
- Figure 5 is a schematic view of the command to change the direction of rotation of the motor.
- Figure 6 is a sectional view along the line 6-6 of Figure 5.
- Figure 7 is a sectional view along the line 7-7 of figure 5.
- Figure 8 is a schematic view of the command to change the direction of rotation of the motor, the latter occupying a position for rotation at left of said engine.
- Figure 9 is a sectional view along the line 9-9 of figure 8.
- the screwdriver shown in the figures includes a body 1 with, at one end, means 3 for receiving a tool and, at the other end, a nozzle 2 intended to receive a compressed air inlet pipe.
- control trigger 5 On the body 1 is articulated, on an axis 4, control trigger 5.
- a pusher 6 for changing the direction of rotation of a air motor 12.
- the end piece 2 is pierced with a conduit 7 in which is wedged a ring 10 on which is supported one end of a spring 8, the other end of which cooperates with the ball 9 of a valve bearing on a seat 14.
- the body 1 is provided with a transverse bore 17 in which a finger slides 16, including one end is likely to push the ball 9 to the valve opening, while the other end door against the trigger 5, a seal 18 being mounted on the finger and being held by a shoulder 19.
- a channel 20 made in an element 32 of the body 1 and which opens into an opening 33 of a pallet 30.
- the pusher 6 (see Figures 3 and 4) has a rod 22 slidingly mounted in a bore 23 of element 32 against the action of a spring compression 24 resting on the bottom of said bore and said rod 22 is provided with a groove 25 in which is inserted a seal 26.
- the rod 22, at an intermediate point of its length has a notch 28 in which is engaged a stud 29 integral with the pallet 30 which, at one end, is guided on a shoulder 31 of a distribution and exhaust wall 36 and, to the other end, in a groove 45 of the element 32.
- the pallet 30 is pierced with a channel 34 opening at one end, on the one hand, and in the opening 33, on the other hand.
- an opening exhaust 41 In the wall 36 is made an opening exhaust 41 and, diametrically opposite, two openings 39 and 40 which allow, first, the intake for the rotation of the engine 12 in the direction normal (right rotation), while the other generates admission for the opposite direction of rotation (rotation to the left).
- the two openings 39 and 40 open on a conduit 44 formed in element 32 and communicating with a conduit 43 opening on one end rear of body 1 provided with exhaust openings 15 with interposition of noise reducing washers 21.
- the element 32 is pierced with a conduit 42 in communication with the opening 41 and the conduit 43.
- the pallet 30 is likely to port selectively opening 40 with air intake compressed by channel 20, opening 33 and channel 34 or opening 39 through the same elements.
- the user needs to unscrewing, it presses pusher 6 which, by its notch 28, drives the stud 29 so that the pallet 30 (see figures 8 and 9) pivots, the opening 39 then being fed through the channel 34; the main exhaust works in the same way only when the motor is powered for the direction of normal rotation, while the secondary exhaust takes place through the opening 40, the conduit 44, the conduit 43 and the openings 15.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
- Exhaust Gas After Treatment (AREA)
Description
Claims (2)
- Visseuse pneumatique du type comprenant un corps (1) avec, à une extrémité, des moyens (2) pour le branchement d'un tuyau d'arrivée d'air comprimé, un moteur pneumatique (12) entraínant, par une liaison cinématique, un outil situé à l'autre extrémité, une détente (5) mobile sur le corps (1) et commandant, à travers une ouverture d'admission (40) d'une paroi de distribution d'air comprimé (36), l'admission au moteur, ladite paroi comportant une ouverture d'échappement (41) reliée par des conduits (42, 43) à un échappement (15) de la visseuse et des moyens de commande de l'inversion du sens de rotation du moteur pneumatique, comprenant un poussoir (6) situé à l'extérieur du corps (1) au voisinage de la détente (5) commandant une palette (30) coopérant avec la paroi de distribution d'air comprimé (36) ; la dite paroi de distribution comportant une seconde ouverture d'admission (40) pour l'inversion du sens de rotation du moteur (12), de manière que, lorsque ledit poussoir (6) n'est pas sollicité, le moteur (12) tourne dans le sens normal, tandis que lorsqu'il il est sollicité, il commande l'inversion du sens de rotation du moteur (12), caractérisée en ce que le poussoir (6) est mobile contre l'action de moyens élastiques (24), la palette (30) est percée d'un conduit (34) en communication avec l'arrivée d'air comprimé et s'ouvrant sur la paroi de distribution en regard de l'ouverture d'admission (40), tandis que lorsque le poussoir (6) est sollicité contre l'action des moyens élastiques (24), la palette (30) est déplacée afin que son conduit (34) soit disposé en regard de la seconde ouverture (39), lesdites ouvertures d'admission (39, 40) étant en communication avec les conduits d'échappement (42, 43) afin que, lorsque l'une est en communication avec l'air comprimé, l'autre constitue un échappement secondaire.
- Visseuse pneumatique, selon la revendication 1, caractérisée en ce que le poussoir (6) est solidaire d'une tige (22) montée coulissante dans un alésage (23) du corps contre l'action d'un ressort de compression (24) inséré dans ledit alésage, ladite tige comportant une encoche (28) avec laquelle coopère un téton (29) solidaire de la palette (30) qui est guidée, d'une part, sur un épaulement (31) de la paroi de distribution (36) et, d'autre part, dans une gorge (45) d'un élément (32) du corps (1).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9614236 | 1996-11-21 | ||
FR9614236A FR2755892B1 (fr) | 1996-11-21 | 1996-11-21 | Visseuse pneumatique perfectionnee |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0844052A1 EP0844052A1 (fr) | 1998-05-27 |
EP0844052B1 true EP0844052B1 (fr) | 2002-01-16 |
Family
ID=9497871
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19970402663 Expired - Lifetime EP0844052B1 (fr) | 1996-11-21 | 1997-11-06 | Visseuse pneumatique |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0844052B1 (fr) |
DE (1) | DE69709612T2 (fr) |
ES (1) | ES2167693T3 (fr) |
FR (1) | FR2755892B1 (fr) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1137865B1 (fr) * | 1998-12-07 | 2003-04-02 | Frederick L. Zinck | Ensemble moteur pneumatique reversible |
US6431846B1 (en) | 1999-12-06 | 2002-08-13 | Frederick L. Zinck | Reversible pneumatic motor assembly |
US6598684B2 (en) * | 2000-11-17 | 2003-07-29 | Makita Corporation | Impact power tools |
WO2009071131A1 (fr) * | 2007-12-07 | 2009-06-11 | Etablissements Georges Renault | Outil de vissage/devissage comprenant des moyens d'inversion du sens de rotation actionnables par des translations successives de direction et de sens identiques |
US11541525B2 (en) | 2020-06-22 | 2023-01-03 | Snap-On Incorporated | Reversing mechanism for a power tool |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2733687A (en) * | 1956-02-07 | schmid | ||
US2715889A (en) * | 1952-11-05 | 1955-08-23 | Master Pneumatic Tool Company | Reversing pneumatic motor |
US3298284A (en) * | 1964-09-11 | 1967-01-17 | Rockwell Mfg Co | Servo operated reversing tool |
SE440759B (sv) * | 1984-03-20 | 1985-08-19 | Atlas Copco Ab | Reverserbart tryckluftverktyg |
FR2571094B1 (fr) * | 1984-10-02 | 1988-12-02 | Maire Charles Ets | Perfectionnements aux outils pneumatiques de vissage. |
DE3503032C2 (de) * | 1985-01-30 | 1994-04-07 | Gardner Denver Gmbh | Druckluftmotor für Druckluftschrauber |
-
1996
- 1996-11-21 FR FR9614236A patent/FR2755892B1/fr not_active Expired - Fee Related
-
1997
- 1997-11-06 EP EP19970402663 patent/EP0844052B1/fr not_active Expired - Lifetime
- 1997-11-06 DE DE1997609612 patent/DE69709612T2/de not_active Expired - Fee Related
- 1997-11-06 ES ES97402663T patent/ES2167693T3/es not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
FR2755892B1 (fr) | 1999-01-08 |
DE69709612T2 (de) | 2002-08-14 |
EP0844052A1 (fr) | 1998-05-27 |
FR2755892A1 (fr) | 1998-05-22 |
DE69709612D1 (de) | 2002-02-21 |
ES2167693T3 (es) | 2002-05-16 |
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