CN2712521Y

CN2712521Y - Reciprocating saw

Info

Publication number: CN2712521Y
Application number: CN 200420062151
Authority: CN
Inventors: 朱伯元
Original assignee: Positec Power Tools Suzhou Co Ltd
Current assignee: Positec Power Tools Suzhou Co Ltd
Priority date: 2004-06-24
Filing date: 2004-06-24
Publication date: 2005-07-27
Anticipated expiration: 2014-06-24

Abstract

The utility model relates to a reciprocating saw, which comprises a body case, a reciprocating plate, a sleeve barrel and a reciprocating lever component. The reciprocating plate which can do a reciprocating motion is driven by a motor, the reciprocating lever component which is connected with the inner of the sleeve barrel can slide back and forth, the sleeve barrel is pivoted on the body case, the reciprocating plate is provided with a guiding element, and a guided element is fixedly connected with the sleeve barrel. When the reciprocating lever component is in action, the guided element forms a mobile contact with the guiding element. The guiding element and the guided element are simply arranged on the reciprocating saw; thereby the simple cutter lifting structure of the reciprocating saw can be realized, and the reliable and safe operation can be achieved.

Description

Reciprocating saw

Technical field

The utility model relates to a kind of saw electric tool, especially a kind of reciprocating saw.

Background technology

U.S. Pat 5392519 has disclosed a kind of reciprocating saw.This reciprocating saw is provided with casing, is positioned at the motor of casing, by motor-driven reciprocating lever parts, is connected the drive disk assembly between motor and the reciprocating lever parts, and lifter.Described lifter comprises substantially along eccentric part, flexible member and an arm of certain track rotation.Described arm has irregular shape, and the one end is resisted against on the eccentric part by flexible member, and being connected on the reciprocating lever parts of its other end pivot.Like this, the rotation of eccentric part makes an end of arm and the conflict change in location between the eccentric part and makes and drive reciprocating lever by arm to form certain height in vertical direction poor, and then realizes the cutter lifting motion of reciprocating lever.But, the structure more complicated of above-mentioned lifter, the irregular shape of especially described arm makes its equal more complicated on making and on the technology, thereby has increased the manufacturing and the technology cost of reciprocating saw.

Summary of the invention

For the deficiency of the lifter that overcomes existing reciprocating saw, the purpose of this utility model is to provide a kind of reciprocating saw with lifter simple in structure.

The technical scheme that its technical problem that solves the utility model adopts is: a kind of reciprocating saw comprises casing, by the reciprocating plate that moves back and forth that motor drove, sleeve and reciprocating lever parts, described reciprocating lever parts can before and after slide be connected in the described sleeve, being connected on the described casing of described sleeve pivot, be formed with guide on the described reciprocating plate, be fixedly connected with on the described sleeve and be directed to part, in the process that described reciprocating lever parts move, describedly be directed to contacting that part moves with described guide.

The beneficial effects of the utility model are by guide simply being set on reciprocating saw and being directed to part, make the cutter lifting structure of reciprocating saw become simply, and handling safety to be reliable.

Description of drawings

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1 is the cutaway view of the part of reciprocating saw of the present utility model.

Fig. 2 is the reciprocating plate of the reciprocating saw among Fig. 1 and the assembling stereogram that is driven gear.

Fig. 3 is the reciprocating plate of the reciprocating saw among Fig. 1, is driven gear, the assembling stereogram of sleeve and reciprocating lever parts.

Among the figure: 1. casing, 3. reciprocating plate 4. sleeves 5. reciprocating lever parts 6. guides 7. are directed to 10. rotating shafts 11. of part 8. motor output shafts 9. driven wheels and are driven gear 13. axis 15. pins 17. cover portions 18. protuberances, 20. perforates, 21. inclined surfaces, 22. bearing pins, 25. supporting seats, 26. grooves, 27. chutes, 28. connecting pins, 30 saw blades, 31. roller shafts, 32. bearings

The specific embodiment

With reference to Fig. 1, comprise casing 1 corresponding to reciprocating saw of the present utility model, be positioned at the motor (figure does not show) of casing 1, and motor output shaft 8.The end of motor output shaft 8 forms a driven wheel 9.Also be provided with a rotating shaft 10 in the casing 1, this rotating shaft 10 is approximately perpendicular to motor output shaft 8 setting, and fixed cover is provided with and is driven gear 11 on it.This is driven gear 11 and is meshing with each other with driven wheel 9.Like this, under the drive of driven wheel 9, be driven gear 11 and rotate around rotating shaft 10 with rotating shaft 10.

Also be fixedly connected with pin 15 on the gear 11 being driven, the axis of the axis of this pin 15 and rotating shaft 10 is at a distance of certain distance.This pin 15 is that being embedded in of part is driven in the gear 11 and forms one and extend vertically upward and be driven the outer protuberance 18 of gear 11.Cover portion 17 fixing being sheathed on outside the protuberance 18 that is driven gear 11.

With further reference to Fig. 2 to Fig. 3, this reciprocating saw also comprises reciprocating plate 3, pivotally connected sleeve 4 and reciprocating lever parts 5 on casing 1.These reciprocating lever parts 5 are supported in the sleeve 4 by pair of bearings 32 parts, and, be fixedly connected with on it and extend in outer saw blade 30 so that workpiece (figure does not show) is carried out cutting processing.

Described reciprocating plate 3 is positioned at the top that is driven gear 11 and is forming the perforate 20 of a longitudinal to accommodate the protuberance 18 of described cover portion 17 and pin 15 corresponding to pin 15 places.The length of this perforate 20 roughly equates with the overall diameter of cover portion 17, so described cover portion 17 can not move on the length direction of described perforate 20 and can only move along the width of described perforate 20.Like this, by above-mentioned pin 15, the setting of cover portion 17 and perforate 20 describedly is driven rotatablely moving of gear 11 and just changes the front-rear reciprocation movement of reciprocating plate 3 into.

Described reciprocating plate 3 upwards is formed with a pair of guide 6 at its end away from reciprocating lever parts 5, and this guide 6 has the inclined surface 21 of certain slope.One end of described sleeve 4 is fixedly connected with a roller shaft 31, a pair ofly is directed to the two ends that part 7 is set in this roller shaft 31.In corresponding to most preferred embodiment of the present utility model, this is directed to part 7 also can be around roller shaft 31 rotations for roller.This pair roller 7 is that slide respectively to contact with inclined surface 21 described guide 6.A bearing pin 22 is pivotally connected to the other end of sleeve 4, and bearing pin 22 two end supports are (figure does not show) on casing 1.Like this, sleeve 4 can rotate around bearing pin 22.

The supporting seat of also fixing on the described reciprocating plate 3 that is provided with the both sides that are positioned at sleeve 4 25, this supporting seat 25 is provided with a pair of groove 26.The relative two sides of described sleeve 4 are provided with the chute 27 of a pair of longitudinal.Connecting pin 28 wore this to chute 27 and be supported on this in the groove 26.Simultaneously, this connecting pin 28 is fixedly coupled on above-mentioned reciprocating lever parts 5 to move back and forth with described reciprocating lever parts 5.The height of the diameter of this connecting pin 28 and described chute 27 about equally, like this, connecting pin 28 moves along the axis direction of sleeve 4 with regard to being limited in.Simultaneously, the width of the diameter of this connecting pin 28 and described groove 26 makes it move with described reciprocating plate 3 on axis 13 directions of described sleeve 4 about equally.

By the setting of said structure, described reciprocating plate 3 is when carrying out front-rear reciprocation movement, and supporting seat 25 drives connecting pin 28, and connecting pin 28 drives the horizontal reciprocating movement that reciprocating lever parts 5 carry out front and back simultaneously; Meanwhile, the inclined surface 21 of the guide 6 of reciprocating plate 3 can in the vertical direction when carrying out horizontal reciprocating movement be elected and is directed to part 7 and forms certain height poor, and like this, sleeve 4 will drive reciprocating lever parts 5 and carry out rotation up and down around bearing pin 22.As seen, reciprocating plate 3 is in the proal while, being directed to part 7 (roller) can be rotated down gradually thereby cause the front portion of reciprocating lever parts 5 upwards to lift certain altitude along the inclined surface 21 of guide 6, promptly this moment reciprocating lever parts 5 saw blade carried out is forward and the motion of cutter lifting; On the other hand, when reciprocating plate 3 is moved backward, roller can rotate up gradually along the inclined surface 21 of guide 6 thereby cause the saw blade 30 on the reciprocating lever parts 5 to move downward and press to workpiece, promptly this moment, this saw blade 30 was carried out be backward and the motion of cut workpiece downwards.

Claims

1. reciprocating saw, comprise casing (1), by the motor-driven reciprocating plate that moves back and forth (3), sleeve (4) and reciprocating lever parts (5), described reciprocating lever parts (5) are connected in the described sleeve (4) slidingly back and forth, it is characterized in that: described sleeve (4) pivotally is connected on the described casing (1), be formed with guide (6) on the described reciprocating plate (3), be connected with on the described sleeve (4) and be directed to part (7), in the process of described reciprocating lever parts (5) motion, the described part (7) that is directed to contacts with described guide (6) movably.

2. reciprocating saw according to claim 1 is characterized in that: described guide (6) extends upward and forms the inclined surface (21) with gradient from reciprocating plate (3).

3. reciprocating saw according to claim 1 is characterized in that: the described part (7) that is directed to is a roller, and this roller is around roller shaft (31) rotation that is connected on the described sleeve (4).

4. reciprocating saw according to claim 2 is characterized in that: the described part (7) that is directed to contacts with described inclined surface (21) movably.

5. reciprocating saw according to claim 1 is characterized in that: be fixedly connected with supporting seat (25) on the described reciprocating plate (3), a connecting pin (28) is connected between described supporting seat (25) and the reciprocating lever parts (5).

6. reciprocating saw according to claim 5, it is characterized in that: described sleeve (4) forms a pair of chute (27) in its relative two sides, described supporting seat (25) forms a pair of groove (26), described connecting pin (28) be located in the described chute (27) and described groove (26) in.

7. reciprocating saw according to claim 6 is characterized in that: the height of the diameter of described connecting pin (28) and described chute (27) about equally, and with the width of described groove (26) about equally.