CN110142456A - Pneumatic tool - Google Patents

Abstract

The invention discloses a kind of pneumatic tools, with one be in hollow form ontology, ontology one end is equipped with an air motor, air motor has one to be inserted into intrinsic transmission shaft, the ontology other end is equipped with a connecting piece that can be slid axially, connecting piece is in being formed with a linking part towards intrinsic one end, the connecting piece other end is formed with a cutter group and sets portion, and gear is rotatably driven in being equipped with one in ontology, gear and transmission shaft is driven to be intermeshed, and a pillar is equipped in the position that driving gear deviates its axle center, and a connecting rod has a first end and an opposite second end, and connecting rod is articulated in pillar with its first end fixed point, the linking part for being articulated in connecting piece is then pinpointed with its second end again.

Description

Pneumatic tool

Technical field

The present invention is related with automation hand-held tool, particularly relates to a kind of pneumatic work that cutter can be driven to move back and forth Tool.

Background technique

As shown in Figure 7 and Figure 8, existing Pneumatic saw drive mechanism is mainly equipped with a sliding tooth in the inside of Pneumatic saw 91 Wheel 92, and it is equipped with a biasing post 93 in the driving gear 92, and a saw blade unit 94 is connected with a drive block 95 in its end, Drive block 95 has an elongated slot 951, and biasing post 93 is slideably connected in elongated slot 951.When driving gear 92 to rotate, partially Stem 93 can be displaced along 951 pushing tow of the elongated slot drive block 95, make saw blade unit 94 that can generate reciprocal shifting in a linear casing It is dynamic.

But through biasing post 93 along elongated slot 951 toward polyslip with the kind of drive of pushing tow drive block 95, due to its elongated slot 951 must have the slipping space slid for biasing post 93, therefore the production of gap 96 is had between biasing post 93 and elongated slot 951 It is raw, that is to say, that the saw blade unit 94 connected using such kind of drive, the drive block 95 of 94 end of saw blade unit with it is convex Column 93 is actually the transitory state that is in and can slide relatively, therefore when saw blade unit 94 carries out the reciprocating movement of high speed, The phenomenon that being easy beat shaking generation, and will lead to component and be prone to wear and the generation of noise.

In view of this, therefore how to improve the missing of known Pneumatic saw drive mechanism, as the present invention to be solved primary Project.

Summary of the invention

The main purpose of the present invention is to provide a kind of simple pneumatic tools of structure.

To achieve the above object, the present invention provides a kind of pneumatic tool, includes:

One ontology has a room in hollow form, and one end of the ontology is equipped with an air motor, the air motor It is inserted into transmission shaft in the room with one, and is equipped with a transmission teeth portion in the transmission shaft, is set in the other end of the ontology There is a connecting piece that can be slid axially, which is formed with a linking part in one end towards the room, and the connecting piece A cutter group, which is formed with, in the other end for being relatively distant from the room sets portion；

One driving gear, is rotatably arranged in the room, which has a tooth socket portion, the tooth socket portion and the biography The intermeshing of movable tooth portion, and a pillar is equipped in the position that the driving gear deviates its axle center；

One connecting rod has a first end and an opposite second end, and the first end fixed point of the connecting rod is articulated in the pillar, The second end of the connecting rod then pinpoints the linking part for being articulated in the connecting piece.

It is made of preferably, cutter group sets portion the built-in brick that a plug is set in the other end of connecting piece, and on built-in brick One is offered for the profile groove of folder tug cutter.

Preferably, ontology be installed in the other end one be in hollow tubular casing, and connecting piece is arranged in casing, and Two projecting ring sections being set in distance are formed in the periphery of connecting piece, and connecting piece is connected to the casing so that two projecting ring section is opposite Inner wall on.

Preferably, the first end of connecting rod offers one first perforation, and one has been installed with by ball bearing in the first perforation The first sliding part constituted, the first sliding part have one first outer wall and one first inner wall in hollow and annular, the first outer wall Peripheral shape is corresponding with the inner edge shape of the first perforation, and the first outer wall correspondence of the first sliding part is connected to the interior of the first perforation Edge, and the shape of the first inner wall is then corresponding with the shaft shape of pillar, pillar, which is worn and corresponded to its shaft, is connected to first First inner wall of sliding part, and one second perforation is offered in connecting rod second end, and be installed with one by ball in the second perforation The second sliding part that bearing is constituted, the second sliding part is in hollow and annular and has one second outer wall and one second inner wall, outside second The peripheral shape of wall is corresponding with biperforate inner edge shape, and the second outer wall correspondence of the second sliding part is connected to the second perforation Inner edge, and the shape of the second inner wall is then corresponding with the shaft shape of a positioning column, and positioning column is worn simultaneously with its shaft Second perforation of linking part and connecting rod, and with corresponding the second inner wall for being connected to the second sliding part of its shaft.

Further, the lug that linking part is set in distance by two is constituted, and has been provided on two lug along same One aperture axially opened up, and the second end of connecting rod is lain along between two lugs of linking part, the second perforation and two lug On aperture in confronting coaxial be arranged, and positioning column with its shaft simultaneously wear aperture with second perforation.

The invention has the advantages that effect simple with structure, that transmission is certain, and abrasion and the noise of component can be prevented Generation.

And above-mentioned purpose and advantage of the invention, it is not difficult to obtain from the detailed description and accompanying drawings of following selected embodiments It understands in depth.

Detailed description of the invention

Fig. 1 is decomposition diagram of the invention.

Fig. 2 is the stereo appearance figure after present invention assembling.

Fig. 3 is diagrammatic cross-section of the invention.

Fig. 4 is the diagrammatic cross-section at another visual angle of the present invention.

Fig. 5, Fig. 6 are illustrative view of the invention.

Fig. 7 is the structural schematic diagram of existing Pneumatic saw.

Fig. 8 is the action schematic diagram of existing Pneumatic saw occurred when beat shakes.

With reference to the accompanying drawing and specific embodiment is described in further details the present invention.

Specific embodiment

As shown in Figure 1 to 4, the present invention provides a kind of pneumatic tool 10, mainly includes:

One ontology 11, in the hollow shelly-shaped of both ends transmission, and portion is formed with a room 12 in the inner, and the termination of ontology 11 1 is set There is an air motor 13, which has a transmission shaft 14 being inserted into room 12, and is equipped in transmission shaft 14 One transmission teeth portion 141, and a connecting piece 15 that can be slid axially is equipped in the other end of ontology 11, the connecting piece 15 is in direction One end of room 12 is formed with a linking part 16, and the lug 161 that linking part 16 is set in distance by two is constituted, and two convex in this The aperture 162 opened up along the same axis is provided on ear 161, and connecting piece 15 is equipped with one in the other end for being relatively distant from room 12 Cutter group sets portion 17, which sets portion 17 and be made of the built-in brick that a plug is set in 15 other end of connecting piece, and is rabbeting One is offered on block for the profile groove 171 of folder tug cutter 61 (such as saw blade or file).Separately in this present embodiment, ontology 11 is in another More be installed in one end one be in hollow tubular casing 18, and connecting piece 15 is arranged in casing 18, and in the outer of connecting piece 15 It is formed with two projecting ring sections 151 being set in distance week, and connecting piece 15 is connected in casing 18 so that two projecting ring section 151 is opposite On wall.

Furthermore ontology 11 is concavely provided with a tank 111 in an inner wall of opposite room 12, and rolling is equipped in tank 111 Pearl bearing 19, and a driving gear 21 is made of a bevel gear, which is formed with a pivot 22, and the other end is then It is formed with a helical teeth portion 23, gear 21 is driven mutually to be pivotally connected with the axis hole 191 of its pivot 22 and ball bearing 19, makes to drive gear 21 are rotationally hubbed in room 12, and are equipped with a pillar 24 in the position that driving gear 21 deviates its axle center, and pass Moving axis 14 is driven teeth portion 141 with it and helical teeth portion 23 is intermeshed, and makes transmission shaft 14 that driving gear 21 can be driven to rotate.

Interconnected by a connecting rod 31 between pillar 24 and the interconnecting piece 16 of connecting piece 15, which has one first End 32 and an opposite second end 33, and connecting rod 31 is articulated with first end 32 and pillar 24, then with its second end 33 and even The linking part 16 of knot part 15 is articulated.In this present embodiment, the first end 32 of connecting rod 31 offer one first perforation 321, and in First sliding part 41 being made of needle bearing is installed in first perforation 321, the first sliding part 41 has in hollow and annular There are one first outer wall 42 and one first inner wall 43, the peripheral shape of the first outer wall 42 is opposite with the inner edge shape of the first perforation 321 It answers, makes the first outer wall 42 of the first sliding part 41 that can correspond to the inner edge for being connected to the first perforation 321, and the shape of the first inner wall 43 It is then corresponding with 241 shape of shaft of pillar 24, and pillar 24 is worn and is corresponded to its shaft 241 and is connected to the first sliding part 41 The first inner wall 43, so that 24 adjustable point of pillar is articulated in the first end 32 of connecting rod 31.

And the second end 33 of connecting rod 31 is lain along between two lugs 161 of linking part 16, and is opened in its second end 33 Equipped with one second perforation 331, and the aperture 162 on the second perforation 331 and two lugs 161 is arranged in confronting coaxial, and in second Second sliding part 51 being made of needle bearing is installed in perforation 331, the second sliding part 51 has one in hollow and annular Second outer wall 52 and one second inner wall 53, the peripheral shape of the second outer wall 52 is corresponding with the inner edge shape of the second perforation 331, makes Second outer wall 52 of the second sliding part 51 can correspond to the inner edge for being connected to the second perforation 331, and the shape of the second inner wall 53 then with 341 shape of shaft of one positioning column 34 is corresponding, and positioning column 34 is arranged in the aperture of linking part 16 with its shaft 341 simultaneously 162 in the second of the connecting rod 31 the perforation 331, and with corresponding the second inner wall 53 for being connected to the second sliding part 51 of its shaft 341, 33 adjustable point of second end of connecting rod 31 is set to be articulated in the linking part 16 of connecting piece 15.

And as shown in Figure 5, Figure 6, work as user in actual use by pneumatic tool composed by above structure feature Activate air motor 13, when making its transmission shaft 14 that driving gear 21 be driven to rotate, the pillar 24 of eccentric setting i.e. can with around The mode in driving 21 axle center of gear rotates, and connecting rod 31 is pivotally connected with its first end 32 and pillar 24, and the second end 33 of connecting rod 31 is then It is pivotally connected with the linking part 16 of connecting piece 15, and makes the first end 32 of connecting rod 31 and second end 33 that can respectively constitute pivot pass whereby Section, therefore when pillar 24 starts rotation, that is, understand axial direction of the traction link 31 with synchronous drive connecting piece 15 along casing 18 and carries out Shuttle movement.

Furthermore connecting rod 31 at the pivoting articulation at its both ends (i.e. first perforation 321 with second perforate 331) be respectively equipped with by The first sliding part 41 and the second sliding part 51 that needle bearing is constituted not only can effectively promote smoothness when its pivot, and Since 24 system of pillar is worn with its shaft 241 and is corresponded on the first inner wall 43 for being connected to the first sliding part 41, and fixed column 34 It is then to be worn and corresponded to its shaft 341 on the second inner wall 53 for being connected to the second sliding part 51, and make pillar 24 and whereby Can be respectively constituted between one sliding part 41 and fixed column 34 and the second sliding part 51 fixed point pivot joint connection status, such one Come, it can be made neither to have gap generation at two pivoting articulations, and can effectively limit its connecting piece 15 and be only capable of along casing 18 axial direction moves back and forth, and the situation for not having beat shaking occurs, and can make in turn provided by the present invention pneumatic Tool, which can have, is driven certain effect, and since the situation that can effectively avoid beat from shaking when its transmission occurs, more can Further prevent the abrasion of component and the generation of noise.

Claims (6)

1. a kind of pneumatic tool, which is characterized in that it includes:

One ontology has a room in hollow form, and one end of the ontology is equipped with an air motor, which has One is inserted into the transmission shaft in the room, and is equipped with a transmission teeth portion in the transmission shaft, is equipped with one in the other end of the ontology The connecting piece that can be slid axially, which is formed with a linking part in one end towards the room, and the connecting piece is in phase One cutter group is formed with to the other end far from the room and sets portion；

One driving gear, is rotatably arranged in the room, which has a tooth socket portion, the tooth socket portion and the driving cog Portion's intermeshing, and a pillar is equipped in the position that the driving gear deviates its axle center；

One connecting rod has a first end and an opposite second end, and the first end fixed point of the connecting rod is articulated in the pillar, the company The second end of bar then pinpoints the linking part for being articulated in the connecting piece.

2. pneumatic tool according to claim 1, it is characterised in that: the cutter group sets portion and is set to the connecting piece by a plug Built-in brick in the other end is constituted, and one is offered on the built-in brick for the profile groove of folder one cutter of tug.

3. pneumatic tool according to claim 1, it is characterised in that: the ontology is installed with one in hollow tube in the other end The casing of shape, and the connecting piece is arranged in the casing, and is formed with two bulge loops being set in distance in the periphery of the connecting piece Portion, and the connecting piece is connected on an inner wall of the casing so that two projecting ring section is opposite.

4. pneumatic tool according to claim 1, it is characterised in that: the first end of the connecting rod offers one first perforation, And it has been installed with one first sliding part in first perforation, which has one first outer wall and one in hollow and annular First inner wall, the peripheral shape of first outer wall is corresponding with the inner edge shape of first perforation, and the first of first sliding part The corresponding inner edge for being connected to first perforation of outer wall, and pillar has a shaft, and the shape of first inner wall and the pillar Shaft shape is corresponding, which wears with its shaft and correspond to the first inner wall for being connected to first sliding part, and the connecting rod One second perforation is offered in second end, and has been installed with one second sliding part in second perforation, during which is in Idle loop shape and there is one second outer wall and one second inner wall, the peripheral shape of second outer wall and biperforate inner edge shape Corresponding, the second outer wall of second sliding part is corresponding to be connected to biperforate inner edge, and a positioning column has a shaft, And the shape of second inner wall is corresponding with the shaft shape of the positioning column, which wears the linking part with its shaft simultaneously It perforates with the second of the connecting rod, and with corresponding the second inner wall for being connected to second sliding part of its shaft.

5. pneumatic tool according to claim 4, it is characterised in that: the lug institute structure that the linking part is set in distance by two At, and in providing the aperture opened up along the same axis on two lug, and the second end of the connecting rod lies along linking part Between two lugs, this second perforation with two lug on aperture in confronting coaxial setting, and the positioning column with its shaft simultaneously Wear the aperture and second perforation.

6. pneumatic tool according to claim 4, it is characterised in that: first sliding part is respectively with second sliding part One needle bearing.