CN104162717A

CN104162717A - Telescopic saw

Info

Publication number: CN104162717A
Application number: CN201410290634.5A
Authority: CN
Inventors: 李炜
Original assignee: Individual
Current assignee: Individual
Priority date: 2014-06-18
Filing date: 2014-06-18
Publication date: 2014-11-26

Abstract

The invention discloses a telescopic saw, and relates to saw tools, in particular to the tool for cutting hard round steel bar type wire rods. An existing saw for cutting steel bars is mostly used for achieving cutting by fixing a single saw blade. The saw is prone to sliding and tilting in use due to the structure, the saw blade is prone to being broken, and meanwhile cutting efficiency is low. According to a lever linkage principle, saw blades are mounted in an annular opening, and three saw grooves with 120-degree included angles are formed. A sliding block capable of being shrunk towards a center is mounted on each groove, and the saw blades and a connecting rod mechanism are fixedly connected to the two sides of each sliding block. The saw grooves are fixedly connected to a handle through shroud rings, a push rod connection sliding block and a grip are arranged in the handle, and the grip and the saw blades are separated in an expanded mode with a spring. When the grip is held tightly, the three sector saw blades which are arranged in the saw grooves and distributed with 120-degree included angles can be driven to shrink inwards to clamp the wire rods, and the effect that the handle is pulled in a reciprocating mode is equivalent to that three saws are used for cutting at the same time. The telescopic saw is simple and reliable in design, low in cost, small in size, light, especially suitable for cutting the round wire rods, and capable of replacing a traditional steel saw partially.

Description

Flexible saw

Technical field

The present invention relates to saw instrument, especially cut the instrument of hard circular steel muscle class wire rod.

Background technology

The saw of existing cutting reinforcing bar is that mode realizes cutting mainly with fixing single saw blade.Such structure easily slides in use, makes saw blade easily and fractures, and cutting efficiency is low simultaneously.

The present invention adopts lever-linked principle, and saw blade is installed in an annular opening, and is provided with on the kerf that three angle journeys 120 spend.The slide block that shrink at Ke Xiang center is installed on groove, and saw blade and linkage are fixedly connected at slide block both sides.Kerf is fixedly connected with handle by shroud ring, and there are push rod connection sliding block and handle in handle inside, and uses spring handle handle and saw blade spreading.In the time holding handle with a firm grip, three fan-shaped saw blades that can drive the journey 120 being placed on kerf to spend angle arrangement inwardly shrink and clamp wire rod, back and forth pull handle to be equivalent to three saws and cut simultaneously.This simplicity of design is reliable, and cost is low, and volume is little lightweight, is specially adapted to incising circular wire rod, can partly replace traditional hacksaw.

According to retrieval, domestic not yet have an identical patent application with the present invention.

Summary of the invention

For above-mentioned recommend deficiency, the invention provides a kind of make simple, reliable in action, small and light, uses the reinforcing bar cutting tool that lever-linked principle is structure.

The technical solution adopted for the present invention to solve the technical problems is: as shown in Figure 1, Figure 2, Figure 3, Figure 4, this flexible saw comprises handle 1, to lock bolt 2, depression bar 3, straight sliding piece 4, nut 5, pad 6, fan-shaped saw blade 7, connecting rod 8, stop bit screw 9, connecting rod 10, slide block 11, connecting ring 12, handle 13, shroud ring 14, connecting rod 15, kerf 16, elastic scheibe 17, connecting rod 18, pin 19, locator 20, spring 21, push rod 22, bolt 23, connecting rod base 24, screw 25, backstay 26.It is characterized in that: the connecting ring 12 use nuts 5 described in Fig. 1 are fixed on one end of handle 13, handle 1 use is arranged on connecting ring 12 lock bolt 2, depression bar 3 use are connected on handle 1 lock bolt 2, handle 13 use shroud rings 14 are fixed on kerf 16, slide block 11 inserts in kerf 16 from a side, fan-shaped saw blade 7 use nuts 5, pad 6 is fastened on slide block 11 and straight sliding piece 4, and with elastic scheibe 17, connecting rod A8, connecting rod B10, connecting rod C15, connecting rod D18, with straight sliding piece 4, slide block 11 is connected, stop bit screw 9 prevents that connecting rod is lean-in: there is pin 19 locator 20 one end described in Fig. 2, other end push rod 22 screws in wherein and string has spring 21, shroud ring 14 use bolts 23, nut 5 handles 13 are closely connected on kerf 16.Connecting rod 8, connecting rod 15 use bolts 23 are arranged on push rod 22 through straight sliding piece 4, connecting rod base 24 use screws 25 are fixed on kerf 16, connecting rod 10, connecting rod 18 one end are arranged on slide block 11 with screw 25, and the other end is connected with connecting rod 8, connecting rod 15, connecting rod base 24 with elastic scheibe 17; Backstay 26 described in Fig. 3 is inserted straight sliding piece 4 and kerf 16, prevents that straight sliding piece 4, slide block 11 from breakking away between slide block 11 and kerf 16; Described in Fig. 4 is kerf 16 stereograms; Described in Fig. 5 is slide block 11 stereograms; Described in Fig. 6 is push rod 22 stereograms; Described in Fig. 7 is straight sliding piece 4 stereograms.

The invention has the beneficial effects as follows: the present invention adopts link transmission principle, clamp cutting object when the handle of holding with a firm grip makes push rod promote under straight sliding piece the effect at connecting rod, fan-shaped saw blade inwardly to be closed up, make handle move back and forth simultaneously and just reached the object of cutting.The present invention is novel, and structure is light and handy, easy to use stable fast, reliably not fragile saw blade, be hacksaw new breakthrough.Can wide popularization and application in all kinds of buildings, construction industry.

Brief description of the drawings

Fig. 1 is front view of the present invention.

1---handle, 2------depression bar, 4---straight sliding piece, 5---nut, 6---pad, 7---fan-shaped saw blade, 8---connecting rod, 9---stop bit screw, 10---connecting rod, 11---slide block, 12---connecting ring, 13---handle, 14---shroud ring, 15---connecting rod, 16---kerf, 17---elastic scheibe, the 18---connecting rod to lock bolt, 3 in Fig. 1.

Fig. 2 is backsight of the present invention and handle cutaway view.

8---connecting rod, 10---connecting rod, 15---connecting rod, 17---elastic scheibe, 18---connecting rod, 19---pin, 20---locator, 21---spring, 22---push rod, 23---bolt, 24---connecting rod base, 25---screws in Fig. 2.

Fig. 3 is side view of the present invention.

4---straight sliding piece, 5---nut, 6---pad, 7---fan-shaped saw blade, 8---connecting rod, 10---connecting rod, 11---slide block, 15---connecting rod, 16---kerf, 17---elastic scheibe, 23---bolt, 24---connecting rod base, 25---screw, 26---backstays in Fig. 3.

Fig. 4 is kerf 16 outside drawings of the present invention.

Fig. 5 is slide block 11 outside drawings of the present invention.

Fig. 6 is push rod 22 outside drawings of the present invention.

Fig. 7 is straight sliding piece 4 outside drawings of the present invention.One

Detailed description of the invention

The invention will be further described to utilize accompanying drawing.

When the present invention installs, first connecting rod base 24 use screws 25 are arranged on kerf 16, more straight sliding piece 4, slide block 11, backstay 26 are arranged on kerf 16.Push rod 22 is inserted and is provided with in the kerf 16 of straight sliding piece 4 one sides, with the upper connecting rod 8 of bolt 23 string, connecting rod 15, be screwed on push rod 22.Connecting rod 10, connecting rod 18 are connected with connecting rod 8, connecting rod 15, connecting rod base with elastic scheibe 17, the other end is connected on slide block 11 with screw 25.Spring 21 is enclosed within on push rod 22, the locator 20 of screwing on, and depression bar 3 being connected with pin 19, and handle 13 is wrapped in kerf 16 1 sides through depression bar 3, push rod 22, and makes depression bar 3 from the interior pull-out of handle 13, fastening with shroud ring 14, nut 5, bolt 23.With nut 5, connecting ring 12 is fixed on to handle 13 one end again, uses lock bolt 2 is arranged on handle 1 on connecting ring 12.Finally with nut 5, pad 6, fan-shaped saw blade 7 are tightened on straight sliding piece 4, slide block 11.

When work, the handle 1 of holding with a firm grip does not loosen to be made depression bar 3 press to locator 20 to promote push rod 22 and promote straight sliding piece 4, connecting rod 8, connecting rod 15, connecting rod 10, connecting rod 18 simultaneously, and under the effect of connecting rod, three fan-shaped saw blades 7 inwardly shrink and clamp wire rod.Now back and forth pull the effect of just playing cutting with handle 13, unclamp handle 1, under the tension force of spring 21, handle 1 is opened, drive fan-shaped saw blade 7 separately simultaneously.

The present invention is novel, simple in structure, easy to use, and action is accurate, efficiency is high sturdy and durable, and one-hand operation is the new breakthrough that solves hacksaw efficiency.Can wide popularization and application in building, construction industry, comprise field, high-altitude, mountain area operation, instrument is the place of Portable belt not, easy to use.

Claims

1. flexible saw, comprises handle 1, to lock bolt 2, depression bar 3, straight sliding piece 4, nut 5, pad 6, fan-shaped saw blade 7, connecting rod 8, stop bit screw 9, connecting rod 10, slide block 11, connecting ring 12, handle 13, shroud ring 14, connecting rod 15, kerf 16, elastic scheibe 17, connecting rod 18, pin 19, locator 20, spring 21, push rod 22, bolt 23, connecting rod base 24, screw 25, backstay 26; It is characterized in that: the connecting ring 12 use nuts 5 described in Fig. 1 are fixed on one end of handle 13, handle 1 use is arranged on connecting ring 12 lock bolt 2, depression bar 3 use are connected on handle 1 lock bolt 2, handle 13 use shroud rings 14 are fixed on kerf 16, slide block 11 inserts in kerf 16 from a side, fan-shaped saw blade 7 use nuts 5, pad 6 are fastened on slide block 11 and straight sliding piece 4, and be connected with elastic scheibe 17, connecting rod A8, connecting rod B10, connecting rod C15, connecting rod D18 and straight sliding piece 4, slide block 11, stop bit screw 9 prevents that connecting rod is lean-in; There is pin 19 locator 20 one end described in Fig. 2, other end push rod 22 screws in wherein and string has spring 21, shroud ring 14 use bolts 23, nut 5 handles 13 are closely connected on kerf 16, connecting rod 8, connecting rod 15 use bolts 23 are arranged on push rod 22 through straight sliding piece 4, connecting rod base 24 use screws 25 are fixed on kerf 16, connecting rod 10, connecting rod 18 one end are arranged on slide block 11 with screw 25, and the other end is connected with connecting rod 8, connecting rod 15, connecting rod base 24 with elastic scheibe 17; Backstay 26 described in Fig. 3 is inserted straight sliding piece 4 and kerf 16, prevents that straight sliding piece 4, slide block 11 from breakking away between slide block 11 and kerf 16; Described in Fig. 4 is kerf 16 stereograms; Described in Fig. 5 is slide block 11 stereograms; Described in Fig. 6 is push rod 22 stereograms; Described in Fig. 7 is straight sliding piece 4 stereograms.