CN2290454Y

CN2290454Y - Pneunatic tool having reciprocating linear movement

Info

Publication number: CN2290454Y
Application number: CN 97206685
Authority: CN
Inventors: 方再容
Original assignee: Individual
Current assignee: Individual
Priority date: 1997-03-05
Filing date: 1997-03-05
Publication date: 1998-09-09
Anticipated expiration: 2007-03-05

Abstract

The utility model provides a pneumatic tool with reciprocating linear movement, which is composed of an air guide mechanism, a drive mechanism and a tool holding mechanism and is characterized in that both sides of a shaft of the drive mechanism are respectively provided with a front and a rear propulsion elements, a valve body is arranged between the front and the rear propulsion elements and drives the front and the rear propulsion elements to move back and forth by the intake of the air guide mechanism so as to drive the shaft to move in a reciprocating linear way. The valve body can change the air flow direction in the moving process of the front and the rear propulsion elements, and the shaft drives tools to move in a continuous reciprocating linear way.

Description

The pneumatic tool of linear reciprocating motion

The utility model relates to a kind of hand tools, particularly a kind of manual pneumatic tool with pneumatic mechanism.

The kind of hand-held tool is a lot, every kind of hand-held tool all has its specific function, but it is poor on service efficiency, in order to increase work efficiency, a kind of pneumatic tool has appearred on the market, and it comprises that mainly an admission gear, torsion guiding mechanism and are in order to change the clamping device of machining tool, its admission gear of mat imports gas, the main shaft that orders about on the transmission mechanism is done the forward and backward motion, thereby drives clamping device, makes the machining tool that is arranged on clamping device can do operations such as brill, mill.Above-mentioned air tool main shaft can only be done both forward and reverse directions rotation, can't be applicable to mallet, hits, saws, occasion such as file.

The purpose of this utility model is the pneumatic tool that a kind of linear reciprocating motion will be provided, and the linear reciprocating motion that it can do to continue is to be applicable to the workplace that need make reciprocal mallet, hit, saw, file.

Utility model is achieved in that the air tool preceding flange that advances no part front end to be connected to axostylus axostyle of linear reciprocating motion, and face is established an internal ring portion, outer portion in its back-end, is a spill air chamber between the inside and outside ring portion; Trapezoid element is established a big terraced portion and a little terraced portion, and big terraced portion front end is connected to internal ring portion; The outer rim and the housing inner edge adjacency of preceding choke element, the fore-end of preceding choke element surrounds and leaves the gap with preceding propulsion element, its rear end part inner edge is convexly equipped with first protuberance and second protuberance, first protuberance and preceding propulsion element rear end face in abutting connection with or keep an appropriate gap; The little terraced portion outside that valve body is set in trapezoid element is and is slidingly matched the second protuberance trailing edge of choke element before front end is connected to; Air inlet element outer ring surface and housing inner edge adjacency, its inner ring surface are enclosed in the valve body outside and have appropriate gap, and its length is greater than valve body, and air inlet element is established more than one breach on trailing edge; The little terraced portion of collar front end and valve body and trapezoid element connects; Leave the gap between the outer rim of back choke element and housing tube wall, its inner rim front end has one second protuberance and first protuberance, and second protuberance and the collar keep the gap, and its front end and valve rear end support or keep an appropriate gap; The front end face of back propulsion element is established an outer portion and an internal ring portion, is a spill air chamber between inside and outside ring portion, its rear end then with the nut butt, first protuberance of outer portion and back choke element in abutting connection with or keep a gap.

The utility model mat transmission mechanism both sides are set up forward and backward propulsion element separately, between two elements, establish a valve body, when utilizing the back propulsion element to move backward, driving axostylus axostyle moves backward, and preceding propulsion element then drives axostylus axostyle to travel forward when travelling forward, and valve body is used for changing the flow direction of outer supplied gas at the volley, axostylus axostyle is done reciprocating linear motion constantly, to be applicable to the workplace that needs reciprocal mallet, hits, saws, files.

The concrete structure of utility model is provided by following examples and accompanying drawing thereof.

Fig. 1 is the pneumatic tool longitudinal section of the utility model linear reciprocating motion.

Fig. 2 is a transmission mechanism cross-sectional schematic among Fig. 1.

Fig. 3 is that gear train shaft is surveyed decomposing schematic representation among Fig. 1.

Fig. 4 is that the air guide mechanism axle is surveyed decomposing schematic representation among Fig. 1.

Fig. 5 is that axostylus axostyle is made motion schematic diagram backward among Fig. 1.

With reference to Fig. 1, the pneumatic tool of linear reciprocating motion includes a housing 1, and is arranged on protecgulum 4 that air guide mechanism 3, that transmission mechanism 2, in the housing 1 is undertaken on transmission mechanism 2 rear ends and is screwed onto housing 1 one ends is arranged in housing 1 other end, and one is arranged in the clamping element 5 of transmission mechanism front end in order to the machining tool that changes the outfit.

Transmission mechanism included an axostylus axostyle 20, was socketed in the preceding propulsion element 21 of one on the axostylus axostyle 20, a trapezoid element 22, one preceding choke element 23, a valve body 24, an air inlet element 25, a collar 26, a back choke element 27, a back propulsion element 28, the spiral shell flexible member of the rear side end of propulsion element 28 after nut 29, an end of axostylus axostyle 20 ends prop up admittedly with reference to Fig. 2,3 while; Propulsion element 21 front ends are connected on the flange 201 of axostylus axostyle 20, establish an internal ring portion 211, an outer portion 212 at rear end face, are a spill air chamber 213 between the inside and outside ring portion 211,212; Trapezoid element 22 is established a big terraced portion 221 and a little terraced portion 222, and big terraced portion 221 front ends are connected to internal ring portion 211; The outer rim and the housing 1 inner edge adjacency of preceding choke element 23, preceding choke element 23 fore-ends surround and leave the gap with preceding propulsion element 21, thereafter the end inner edge is convexly equipped with first protuberance 231 and second protuberance 232, wherein first protuberance 231 and preceding propulsion element 21 rear end faces in abutting connection with or keep an appropriate gap; Valve body 24 is set in little terraced portion 222 outsides of trapezoid element 22, is to be slidingly matched, second protuberance, 232 trailing edges of choke element 23 before front end is connected to; Air inlet element 25 outer ring surfaces and housing 1 inner edge adjacency, its inner ring surface is enclosed in valve body 24 outsides and has appropriate gap, and its length is greater than valve body 24, air inlet element 25 has more than one breach 251 on trailing edge, gas can enter the gap of air inlet element 25 inner edges and valve body 24 formations from the tube wall of housing 1 through breach 251; The little terraced portion 222 of ring set 26 front ends and valve body 24 and trapezoid element 22 connects; The tube wall of the outer rim of back choke element 27 and housing 1 leaves the gap, and its inner rim front end has second protuberance 271 and first protuberance, 272, the second protuberances 271 and the collar 26 and possesses the gap, and its front end and valve body 24 rear ends support or possess an appropriate gap; The front end face of back propulsion element 28 is established an outer portion 281 and internal ring portion 282, between inside and outside ring portion 282,281, be a spill air chamber 283, its rear end and nut 29 butts, first protuberance 272 of outer portion 281 and back choke element 27 in abutting connection with or keep a gap.

With reference to Fig. 1 and 4, air guide mechanism 3 is socketed in an air exhaust loop 33 and the fixed axostyle 35 that the snap joint 34, one of the solid rear end at air guide element 31 of switch element 32, a spiral shell of outer rim on air guide element 31 rear ends is folded between switch element 32 and the snap joint 34 by the solid air guide element 31, in housing 1 rear end of a spiral shell and forms; Air guide element 31 is established a perforation 311, and whether fixed axostyle 35 to the stopper slot 321 of switch element 32, with limit switch element 32 rotating ranges, uses the control air inlet by perforation 311; Air exhaust loop 33 is established a plurality of rounds 331 that are circumferential arrangement in the rear end.

With reference to Fig. 1, protecgulum 4 is the front end that a ducted body is bolted in housing 1, establishes more than one lining 41 on the internal diameter circle, and the lime material of tool antiwear characteristic is made in the lining 41.

With reference to Fig. 2, this figure represents that simultaneously axostylus axostyle makes proal schematic diagram, gas self-conductance mechanism of qi structure 3 enters in the housing 1, when the gas of tool certain pressure from after after the breach 251 of gap between choke element 27 and the housing 1 and air inlet element 25 enters the space of 24 of air inlet element 25 and valve bodies, gas can rush at along the gap between second protuberance 271, valve body 24 and the collar 26 threes of back choke element 27 in the spill air chamber 283 of back propulsion element 28, order about back propulsion element 28 pressuring elastic elements, make back propulsion element 28 make rectilinear motion backward.

When pusher element 28 moves backward, force the solid nut 29 of spiral shell to drive axostylus axostyle 20 simultaneously and make rectilinear motion backward at axostylus axostyle 20 ends; When axostylus axostyle 20 moves backward, be set on the axostylus axostyle 20 preceding propulsion element 21, trapezoid element 22, valve body 24 and the collar 26 also along with backward the motion, valve body and back choke element 27 are connected, stop gas to enter the spill air chamber 283 of back propulsion element 28, and commentaries on classics is poured by the big terraced portion 221 triangular gaps of second protuberance 232, valve body 24 and the trapezoid element 22 of preceding choke element 23 in the spill air chamber 213 of preceding propulsion element 21, and propulsion element 21 drives axostylus axostyles 20 moving linearly forward before ordering about.

With reference to Fig. 5, when after the outer rim of propulsion element 28 surpass first protuberance 272 of back choke element 27 and form the gap, gas at spill air chamber 283 can be released by this gap, making script flexible member by compression return the urgent back of release of pressure propulsion element 28 travels forward, and together with making the collar 26, valve body 24, trapezoid element 22 travels forward, make second protuberance, 232 butts of valve body 24 and preceding choke element 23, the spill air chamber 213 of propulsion element 21 before stoping gas to enter, make gas follow second protuberance 271 of original back choke element 27 again, gap between the valve body 24 and the collar 26 enters the spill air chamber 283 of back propulsion element 28, by this program, axostylus axostyle 20 is done reciprocating linear motion constantly.

When preceding propulsion element 21 travelled forward, the outer portion 212 of preceding propulsion element 21 exceeded first protuberance 231 of preceding choke element 23 and forms the gap, and supplied gas is released.

With reference to Fig. 1, when axostylus axostyle 20 was reciprocating constantly, the machining tool that promptly drives on the clamping element 5 of front end did reciprocating linear motion, and in motion simultaneously, the lining 41 in the protecgulum 4 can be stablized the direction of motion of axostylus axostyle 20; The preceding propulsion element 21 of protecgulum 4 rear end butt transmission mechanism 2 front ends can limit the relative position of transmission mechanism 2 in housing 1.Use workplaces such as the pneumatic tool of linear reciprocating motion of the present utility model can be for mallet, hit, saw, file.

Claims

1, a kind of pneumatic tool of linear reciprocating motion is made up of housing, transmission mechanism, air guide mechanism, protecgulum and clamping element, it is characterized in that

A, preceding propulsion element 21 front ends are connected to the flange (201) of axostylus axostyle (20), and face is established an internal ring portion (211), outer portion (212) in its back-end, are a spill air chamber (213) between the inside and outside ring portion (211,212);

B, trapezoid element (22) are established a big terraced portion (221) and a little terraced portion (222), and big terraced portion (221) front end is connected to internal ring portion (211);

The outer rim of c, preceding choke element (23) and housing (1) inner edge adjacency, preceding choke element (23) fore-end surrounds and leaves the gap with preceding propulsion element (21), its rear end part inner edge is convexly equipped with first protuberance (231) and second protuberance (232), first protuberance (231) and preceding propulsion element (21) rear end face in abutting connection with or keep an appropriate gap;

Little terraced portion (222) outside that d, valve body (24) are set in trapezoid element (22) is and is slidingly matched second protuberance (232) trailing edge of choke element (23) before front end is connected to;

E, air inlet element (25) outer ring surface and housing (1) inner edge adjacency, its inner ring surface are enclosed in valve body (24) outside and have appropriate gap, and its length is greater than valve body (24), and air inlet element (25) has an above breach (251) on trailing edge;

The little terraced portion (222) of f, the collar (26) front end and valve body (24) and trapezoid element (22) connects;

Leave the gap between the outer rim of g, back choke element (27) and housing (1) tube wall, the its inner rim front end has one second protuberance (271) and first protuberance (272), second protuberance (271) and the collar (26) are possessed the gap, and its front end and valve body (24) rear end supports or keeps an appropriate gap;

The front end face of h, pusher element (28) is established an outer portion (281) and internal ring portion (282), it between inside and outside ring portion (282,281) a spill air chamber (283), its rear end and nut (29) butt, first protuberance (271) of outer portion (281) and back choke element (27) in abutting connection with or keep a gap.