CN200988116Y

CN200988116Y - Folding steel saw

Info

Publication number: CN200988116Y
Application number: CN 200620151657
Authority: CN
Inventors: 刘福满
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-12-12
Filing date: 2006-12-12
Publication date: 2007-12-12
Anticipated expiration: 2016-12-12

Abstract

The utility model relates to a foldable hacksaw. The left half of a main girder is a groove with the 'U' shape, and the right half has the square shape, and a rectangle port is opened in the local lower end of the right end. The upper end of a rear motion arm is separately articulated to a pull rod and the main girder, and the lower end has a stent, a screw and a fly nut. Three saw blade hooks jut out from a saw blade rear hook frame, and the saw blade is hanged on one saw blade hook. The inner of an adjusting bar's upper screw square sleeve has thread, into which the upper end of the adjusting bar is wringed, and the lower end is inserted into the inner of the lower screw square sleeve. A front motion arm is supported on the main girder and the pull rod, from which three saw blade hooks jut out. Because the pull rod, the front motion arm, the rear motion arm and the saw blade form a parallelogram whose four vertices are the articulated points of 'A', 'B', 'C', 'D', the pull rod two moves to the right and the saw blade twelve to the left until the saw blade and the main girder are driven by the rear motion arm to coincide, and the fold finishes. The utility model has the advantages of simple structure, sawing in the small space for example 29 mm, strong practicality, convenient carrying, being specious, simple fabrication and safety and reliability.

Description

Collapsible hacksaw

Technical field

The utility model relates to a kind of hacksaw, particularly relates to the collapsible hacksaw of a kind of saw blade and girder distance variable.

Background technology

As everyone knows, at present, the hacksaw of use bow mostly is monoblock type, and body is wide just can't to carry out sawing for narrow desire processing place because of it is sawed, and simultaneously, saw blade can not change angle; Also have a kind of folding hacksaw, processed complex, the cost height, unstable though the saw blade angle is adjustable, influence construction effect.

Summary of the invention

Main purpose of the present utility model is to overcome above deficiency and a kind of saw blade and girder distance variable is provided, and saw blade can change the collapsible hacksaw of direction.

The technical scheme that its technical problem that solves the utility model adopts is: it comprises girder, pull bar, preceding lever arm, back lever arm, adjusting yoke, back saw blade regulator bracket, back saw blade adjuster, screw rod cover, adjusting screw(rod), handle and saw blade, it is characterized in that:

1.. girder 1 is a U font groove in the left side of midline position, and opens groove at high order end, and right-hand part is a square frame shape, and has rectangle hole 4 in the local lower end near handle 3, and handle 3 is fixedlyed connected with the right-hand member of girder 1;

2.. pull bar 2 is relative and can insert wherein for the U font groove of reverse U shape groove and girder 1;

3.. the back lever arm 5 the upper end respectively with pull bar 2, adjusting yoke 6 is hinged, its pin joint is respectively B, the G point, hinged with girder 1, its pin joint is the D point, the lower end of back lever arm 5 has support 7, screw rod 8, packing ring 9, hook housing 11 behind wing nut 10 and the saw blade, use packing ring 9 in the hole in the middle of the one end insertion support 7 of screw rod 8, wing nut 10 is fixing, hook housing 11 is hinged behind screw rod 8 other ends and the saw blade, its pin joint is the J point, protrude three saw blade hooks behind the saw blade on the hook housing 11, back lever arm 5 is hinged with support 7, and its pin joint is the F point, and hook housing 11 inserts in the gap of support 7 behind the saw blade, and it is hinged with it, its pin joint is the I point, and the rear end of saw blade 12 hangs on the hook of hook housing 11 behind the saw blade, and its pin joint is the H point;

4.. adjusting yoke 6 is by last screw rod side cover 13, adjusting screw(rod) 14, following screw rod side cover 16, packing ring 17, ingot cover 18, spring washer 19 and nut 20 are formed, be threaded in the last screw rod side cover 13, the upper end of adjusting screw(rod) 14 is screwed into wherein, its lower end penetrates down in screw rod side's cover 16, and can rotate in screw rod side's cover 16 down, following screw rod side cover 16 usefulness fixed screws 21 are connected with the square gap of handle 3 lower ends, and can in square gap, swing, the lower end cover upper gasket 17 of adjusting screw(rod) 14, then, put ingot cover 18, spring washer 19 and nut 20 are fixing, the lower end edge axis direction of adjusting screw(rod) 14 is cut into plane 15, the endoporus of ingot cover 18 also have along axis direction be cut into the plane and the plane 15 of being cut into the lower end of adjusting screw(rod) 14 corresponding;

5.. the upper end of preceding lever arm 22 is supported on girder 1 and the pull bar 2 and is hinged, its pin joint is respectively C point and A point, protrude three corresponding saw blade hooks of saw blade hook direction on the hook housing 11 behind three of the lower end protrusions of preceding lever arm 22 and the saw blade, before the front end of saw blade 12 hangs over lever arm 22 lower ends one of them with saw blade after on the hook housing 11 on the corresponding saw blade hook, its pin joint is the E point, the parallelogram of pull bar 2, preceding lever arm 23, back lever arm 5 and saw blade 12 formation activities, its four summits are four pin joint A, B, E, F.

Advantage and the good effect that the utlity model has are: simple in structure, saw body variable-width can carry out sawing in narrow space, and minimum space can reach 29mm, practical, folding portable convenience, good looking appearance, the manufacturing of each part is simple, is convenient to assembling, and is safe and reliable.

Description of drawings

Fig. 1 is the utility model overall structure schematic diagram;

Fig. 2 is a back lever arm structural representation;

Fig. 3 is the syndeton schematic diagram of support 7;

Fig. 4 is a hook housing structural representation behind the saw blade;

Fig. 5 is the syndeton schematic diagram of adjusting yoke;

Fig. 6 is the structural representation of following screw rod side cover;

Fig. 7 is the structural representation of preceding lever arm;

Fig. 8 is the structural representation after the utility model folds.

Among Fig. 1-Fig. 8: 1. girder, 2. pull bar, 3. handle, 4. rectangle hole, 5. lever arm, 6. adjusting yoke, 7. support, 8. screw rod after, 9. packing ring, 10. wing nut, hook housing behind 11. saw blades, 12. saw blades, 13. last screw rod side cover, 14. adjusting screw(rod)s, 15. planes, 16. times screw rod side's covers, 17. packing ring, 18. ingot covers, 19. spring washers, 20. nut, 21. fixed screws, 22. preceding lever arms.

The specific embodiment

For further understanding summary of the invention characteristics of the present utility model and effect following examples for example now, and conjunction with figs. is described in detail as follows, and sees also Fig. 1-Fig. 8.

As shown in Figure 1: girder 1 is a U font groove in the left side of midline position, and opens groove at high order end, and right-hand part is a square frame shape, and has rectangle hole 4 in the local lower end near handle 3 places, and handle 3 is fixedlyed connected with the right-hand member of girder 1; Back lever arm 5 and adjusting yoke 6 from then on rectangle hole 4 places insert; Pull bar 2 is that the reverse U shape groove is relative with the U font groove of girder 1, and can insert wherein, and hacksaw just overlaps when folding; The upper end of back lever arm 5 is hinged with pull bar 2, adjusting yoke 6 respectively, and its pin joint is respectively B, G point, and is hinged with girder 1, and its pin joint is the D point.As Fig. 2-shown in Figure 4: the lower end of back lever arm 5 has support 7, screw rod 8, packing ring 9, hook housing 11 behind wing nut 10 and the saw blade, use packing ring 9 in the hole in the middle of the one end insertion support 7 of screw rod 8, wing nut 10 is fixing, hook housing 11 is hinged behind screw rod 8 other ends and the saw blade, its pin joint is the J point, protrude three saw blade hooks behind the saw blade on the hook housing 11, back lever arm 5 is hinged with support 7, its pin joint is the F point, hook housing 11 inserts in the gap of support 7 behind the saw blade, and it is hinged with it, its pin joint is the I point, and the rear end of saw blade 12 hangs on the hook of hook housing 11 behind the saw blade, and its pin joint is the H point; As Fig. 5, shown in Figure 6: adjusting yoke 6 is by last screw rod side cover 13, adjusting screw(rod) 14, following screw rod side cover 16, packing ring 17, ingot cover 18, spring washer 19 and nut 20 are formed, be threaded in the last screw rod side cover 13, the upper end of adjusting screw(rod) 14 is screwed into wherein, the lower end of adjusting screw(rod) 14 penetrates down in screw rod side's cover 16, and can rotate in screw rod side's cover 16 down, last screw rod side cover 13 can stretch in screw rod side's cover 16 down with the rotation of adjusting screw(rod) 14, following screw rod side cover 16 usefulness fixed screws 21 are connected with the square gap of handle 3 lower ends, and can be around fixed screw 21 swings in square gap, the lower end edge axis direction of adjusting screw(rod) 14 is cut into plane 15, and the endoporus of ingot cover 18 is corresponding with the plane 15 that be cut into the lower end of adjusting screw(rod) 14; The lower end cover upper gasket 17 of adjusting screw(rod) 14 then, puts ingot cover 18, spring washer 19 and nut 20 and fixes, and ingot cover 18 links into an integrated entity with adjusting screw(rod) 14; As Fig. 1, shown in Figure 7: the upper end of preceding lever arm 22 is supported on girder 1 high order end groove place and the pull bar 2 and is hinged, its pin joint is respectively C point and A point, protrude three corresponding saw blade hooks of saw blade hook direction on the hook housing 11 behind three of the lower end protrusions of preceding lever arm 22 and the saw blade, before the front end of saw blade 12 hangs over lever arm 22 lower ends one of them with saw blade after on the hook housing 11 on the corresponding saw blade hook, its pin joint is the E point.When needs change the direction of saw blade 12, get final product on the corresponding saw blade hook on the hook housing 11 behind lever arm 22 and the saw blade before only the hole at saw blade 12 two ends directly need being enclosed within; As shown in Figure 1: turn 10 H points of wing nut clockwise, the J point is swung to the lower right around the I point, H point and F dot spacing are from diminishing, because the distance between H point and E point is fixed, so, the H point be subjected to the F point upwards pulling force and upwards swing, be that the H point is around the upwards swing of E point, meanwhile, the I point to the upper left side swing, continues to turn 10 E of wing nut around the F point, H, 3 stressed backs of F are on same straight line, continue to turn wing nut 10, then H point and F dot spacing diminish from continuing, and simultaneously, the I point continues to swing to the upper left side around the F point, continue to turn 10 saw blades 12 of wing nut and be tightened up, turn 10 of wing nuts counterclockwise and can unclamp saw blade 12.

As Fig. 1, shown in Figure 5: as only under Fig. 1 state, just to fold, when folding, only need turn ingot cover 18, it drives adjusting screw(rod) 14 makes screw rod side's cover 13 to the motion of oblique below, by pin joint G, back lever arm 5 is swung to the right, meanwhile, last screw rod side cover 13 moves in screw rod side's cover 16 downwards gradually, because pull bar 2, preceding lever arm 22, the parallelogram of back lever arm 5 and saw blade 12 formation activities, its four summits are four pin joint A, B, E, F, so the time, be fulcrum with lever arm thereafter 5 with the pin joint D point of girder 1 and the pin joint C point of preceding lever arm 22 and girder 1, then pull bar 2 is to the right and saw blade 12 is moved to the left, drive saw blade 12 until back lever arm 5 and overlap, then as shown in Figure 8: folding finishing with girder 1.

Its advantage is: simple in structure, saw body variable-width can carry out sawing in narrow space, and minimum space can reach 29mm, and is practical, folding portable convenience, and good looking appearance, the manufacturing of each part is simple, is convenient to assembling, and is safe and reliable.

Claims

1, a kind of collapsible hacksaw, it comprises girder, pull bar, preceding lever arm, back lever arm, adjusting yoke, back saw blade regulator bracket, back saw blade adjuster, screw rod cover, adjusting screw(rod), handle and saw blade, it is characterized in that:

1.. girder (1) is a U font groove in the left side of midline position, and opens groove at high order end, and right-hand part is a square frame shape, has rectangle hole (4) in the local lower end of locating near handle (3), and handle (3) is fixedlyed connected with the right-hand member of girder (1);

2.. pull bar (2) is relative and can insert wherein for the U font groove of reverse U shape groove and girder (1);

3.. the back lever arm (5) the upper end respectively with pull bar (2), adjusting yoke (6) is hinged, its pin joint is respectively B, the G point, hinged with girder (1), its pin joint is the D point, the lower end of back lever arm (5) has support (7), screw rod (8), packing ring (9), hook housing (11) behind wing nut (10) and the saw blade, one end of screw rod (8) inserts in the middle hole of support (7) with packing ring (9), wing nut (10) is fixing, hook housing (11) is hinged behind screw rod (8) other end and the saw blade, its pin joint is the J point, hook housing behind the saw blade (11) is gone up and is protruded three saw blade hooks, back lever arm (5) is hinged with support (7), and its pin joint is the F point, and hook housing behind the saw blade (11) inserts in the gap of support (7), and it is hinged with it, its pin joint is the I point, and the rear end of saw blade (12) hangs on the hook of hook housing (11) behind the saw blade, and its pin joint is the H point;

4.. adjusting yoke (6) overlaps (13) by last screw rod side, adjusting screw(rod) (14), following screw rod side's cover (16), packing ring (17), ingot cover (18), spring washer (19) and nut (20) are formed, be threaded in last screw rod side's cover (13), the upper end of adjusting screw(rod) (14) is screwed into wherein, its lower end penetrates down in screw rod side's cover (16), and can rotate in screw rod side's cover (16) down, following screw rod side's cover (16) is connected with the square gap of handle (3) lower end with fixed screw (21), and can in square gap, swing, the lower end cover upper gasket (17) of adjusting screw(rod) (14), then, put ingot cover (18), spring washer (19) and nut (20) are fixing, the lower end edge axis direction of adjusting screw(rod) (14) is cut into plane (15), the endoporus of ingot cover (18) also have along axis direction be cut into the plane and the plane (15) of being cut into the lower end of adjusting screw(rod) (14) corresponding;

5.. the upper end of preceding lever arm (22) is supported on girder (1) and the pull bar (2), and it is hinged, its pin joint is respectively C point and A point, hook housing (11) is gone up and is protruded three corresponding saw blade hooks of saw blade hook direction behind three of the lower end protrusions of preceding lever arm (22) and the saw blade, the front end of saw blade (12) hang over preceding lever arm (22) lower end one of them with saw blade after hook housing (11) go up on the corresponding saw blade hook, its pin joint is the E point, pull bar (2), preceding lever arm (22), the parallelogram of back lever arm (5) and saw blade (12) formation activity, its four summits are four pin joint A, B, E, F.