CN206169383U - Labor -saving bolt cutter - Google Patents

Abstract

The utility model relates to a labor -saving bolt cutter has solved the current not good defect of the laborsaving effect of bolt cutter, including the first binding clip of mutual articulated and second binding clip, the first binding clip of drive with the second binding clip folds or first grab handle of detached and second grab handle, first binding clip be fixed connection with first grab handle, links to each other through the ratchet that can enlarge power output between second binding clip and the second grab handle, and enlarge the ratchet to ratchet and ratchet pivoted promotion pawl and stopping pawl are enlargied to the motive force including power, and enlarged sour jujube engaged with driving cog is provided with on the second binding clip and does all can. The second grab handle passes through the rotation of ratchet drive second binding clip, and realization second binding clip folds or separately, realizes laborsaving effect towards first binding clip, and the ratchet rotation is enlargied to promotion pawl motive force, and the stopping pawl is retreated the in -process at the promotion pawl and is withstood the enlarged ratchet of power, avoids the second binding clip to loosen to realize progressively foling the second binding clip and carry out the action of cuting.

Description

Labor-saving bolt cutter

Technical field

This utility model is related to a kind of bolt clipper, especially a kind of labor-saving bolt cutter.

Background technology

Bolt clipper is a kind of common cutting implement, and cutting implement needs the extruding action at handle to realize cutting behaviour Make, especially in the larger pipe of cutting major diameter or wall thickness, need additionally to pay more effort.Given this reason, When squeeze handles are to apply pressure, these cutting implements need user's turne tube or instrument.But the power that user applies Amount is limited all the time, and the individual diversity ratio of user is larger, applies extruding force to complete shearing manipulation by user completely, The shearing force of offer is limited, and this also limits the size of pipe cutting.

In order to provide bigger shearing force, while and can realize free-hand shearing, also for adapting to larger diameter and bigger The tube scissor of wall thickness be essential will, people have developed labor-saving plier, and sheaves are not as handle is once sheared in place, but by one Ratchet mechanism is planted, sheaves is once closed up shearing and is distributed in the action of multiple squeeze handles, that is, by reducing once The amount of movement of squeeze handles sheaves is realizing labour-saving purpose.But the labor-saving effect of this mode is not ideal, this knot There is no function that is laborsaving or increasing shearing force in structure itself, therefore after completing once to shear, the labor-saving effect that can be reached is not good.

The content of the invention

This utility model solves the not good defect in existing bolt clipper labor-saving effect, there is provided a kind of labor-saving bolt cutter, Force amplificatory structure is set between driving handle and the first binding clip, the power amplification transmission that driving handle is produced will be extruded by force amplificatory structure To the first binding clip, so as to realize labor-saving effect.

This utility model solves the technical scheme that its technical problem adopted：A kind of labor-saving bolt cutter, including mutually hinge The first binding clip for connecing and the second binding clip, the first binding clip of driving and the second binding clip close up or the first separate lever and the second lever, First binding clip, to be fixedly connected, passes through the ratchet machine that can amplify power output with the first lever between the second binding clip and the second lever Structure is connected, and ratchet mechanism includes that power amplifies ratchet and motive force amplifies the promotion ratchet and retaining ratchet of pawl wheel, the second pincers It is provided with head and amplifies the driving cog that spine is meshed with power.The relative side of first binding clip and the second binding clip is sword side, and first clamps Head and the second binding clip close up, and two-edged side completes shearing；Second lever drives the second binding clip to rotate by ratchet mechanism, realizes second Binding clip closes up towards the first binding clip or separates；Ratchet mechanism represents that the active force that can be extruded the second lever is passed to after amplifying Second binding clip, ratchet mechanism can adopt multistage ratchet, such as the coaxial ratchet of different-diameter to fix or integral production, actively Power is applied on the big ratchet of reference diameter, and the little ratchet of reference diameter is used as power output, or multiple differences point Multistage amplification is realized in the gear intermeshing of degree circular diameter；The knot that the application is fixed using the coaxial ratchet of different reference diameters Structure, promotes ratchet motive force to amplify pawl wheel, and retaining ratchet withstands power in ratchet fallback procedures are promoted and amplifies ratchet, it is to avoid Second binding clip unclamps, so as to realize progressively closing up the action that the second binding clip is sheared.

Preferably, it is co-axially fixed two ratchet that power amplifies ratchet, the reference diameter of two ratchets is different, wherein indexing The little little ratchet of circular diameter is meshed with the second binding clip, the big large ratchet of reference diameter by promote ratchet and retaining ratchet with Second lever is connected.

Preferably, promoting the length of ratchet more than the length of retaining ratchet, ratchet is promoted to hold with second with retaining ratchet Handle is provided with holddown spring to be articulated and connected in the hinge point.

Preferably, retaining ratchet is articulated with the end of the second lever, ratchet is promoted to be articulated with during the second lever end leans on Between position.

Preferably, promoting ratchet and power to amplify the position that ratchet engages and the position that the second binding clip is engaged with power amplification ratchet Put the both sides that the power that is just placed in amplifies pawl wheel center；Ratchet is promoted to amplify the arc of the side for indent of ratchet towards power Shape.

Preferably, the tail end for promoting ratchet is extended with stopper, the tail end court of retaining ratchet towards the side of the second binding clip Stopper is extended with to the side of the second binding clip, promotion pin and retaining pin are fixed with the second lever, promoted pin and promote The stopper of ratchet is corresponding, and retaining pin is corresponding with the stopper of retaining ratchet.

Preferably, between the second binding clip and the first binding clip connection open spring, open spring be connected to the second binding clip and Between the tail end of the first binding clip；Limiting component is additionally provided between first lever and the second lever.

Preferably, being connected by two plate member between the first binding clip and the first lever, two plate member are separated, the One binding clip, the second binding clip, the first lever and the second lever be between two plate member locate, ratchet mechanism in two plate member it Between.

A kind of deformation program：Bow is provided between second lever and the second binding clip, one end of bow is held with second Handle is hinged, and arcuate groove is offered at the other end of bow, and finite place piece, limit are fixed in the position of the second binding clip correspondence arcuate groove Position part is inserted in arcuate groove and can be along arcuate groove sliding.With the rotation of the second lever, the arcuate groove of bow combines limit Position part promotes the second binding clip to open.

Another kind of scheme：Second lever fixes jacking block, and the end of jacking block is reached outside the second lever, and jacking block is held with respect to second Handle is tilted, and the angle of inclination makes jacking block amplify after ratchet is separated in retaining ratchet and power can be abutted against and promote with the second binding clip Second binding clip is rotated.Second lever is rotated, and after retaining ratchet is separated with power amplification ratchet, jacking block end abuts with the second binding clip, Then the second lever is rotated, jacking block promotes the second binding clip to open.

The beneficial effects of the utility model are：Second lever drives the second binding clip to rotate by ratchet mechanism, realizes second Binding clip closes up towards the first binding clip or separates, and realizes labor-saving effect, promotes ratchet motive force to amplify pawl wheel, and retaining ratchet exists Promote and power amplification ratchet is withstood in ratchet fallback procedures, it is to avoid the second binding clip unclamps, so as to realize that progressively closing up the second binding clip enters The action of row shearing.

Description of the drawings

Fig. 1 is a kind of structural representation of this utility model；

Fig. 2 is the exploded perspective view of structure shown in this utility model Fig. 1；

Fig. 3 is the use process schematic of structure shown in this utility model Fig. 1；

Fig. 4 is second structural representation of this utility model；

Fig. 5 is the third structural representation of this utility model；

Fig. 6 is the use process schematic of structure shown in this utility model Fig. 5；

In figure：1st, the first lever, 2, plate member, the 3, first binding clip, the 4, second binding clip, the 5, second lever, 6, limiting component, 7th, open spring, 8, large ratchet, 9, little ratchet, 10, power amplify ratchet, 11, retaining ratchet, 12, stopper, 13, retaining pin, 14th, ratchet is promoted, 15, holddown spring, 16, promote pin, 17, driving cog, 18, bow, 19, arcuate groove, 20, locating part, 21st, connecting plate, 22, jacking block.

Specific embodiment

Below by specific embodiment, and accompanying drawing is combined, the technical solution of the utility model is made more specifically It is bright.

Embodiment 1：A kind of labor-saving bolt cutter（Referring to Fig. 1 Fig. 2）, including the first binding clip being hinged by a hinge 3 and second binding clip 4, the first binding clip and the second binding clip is driven to close up or the first separate lever 1 and the second lever 5.First binding clip Be connected by two plate member 2 between the first lever, two plate member are separated and parallel, the first binding clip, the second binding clip, the One lever and the second lever are in locating between two plate member.

It is connected by ratchet mechanism between second binding clip and the second lever, ratchet mechanism includes that power is amplified ratchet 10 and promoted Power amplifies the promotion ratchet 14 and retaining ratchet 11 of pawl wheel, is provided with the second binding clip and amplifies the biography that ratchet is meshed with power Dynamic tooth 17.It is co-axially fixed two ratchet that power amplifies ratchet, and the reference diameter of two ratchets is different, and wherein reference diameter is little Little ratchet 9 is meshed with the second binding clip, and the big large ratchet 8 of reference diameter is by promoting ratchet and retaining ratchet and the second lever It is connected.The length of ratchet is promoted more than the length of retaining ratchet, promotes ratchet to be the company of being hinged with retaining ratchet and the second lever Connect, and the hinge point is provided with holddown spring 15, holddown spring causes to promote ratchet and retaining ratchet to turn around being hinged Move and all the time towards power amplification ratchet.Retaining ratchet is articulated with the end of the second lever, promotes ratchet to be articulated with the second handle end Portion is by middle position.The position that ratchet is engaged is amplified in the position and the second binding clip that promotion ratchet is engaged with power amplification ratchet with power The power that is just placed in amplifies the both sides at pawl wheel center.Ratchet is promoted towards the arc shape that the side of large ratchet is indent.The Spring 7 is opened in connection between two binding clips and the first binding clip, opens spring and is connected between the tail end of the second binding clip and the first binding clip And drive the second binding clip to open naturally with the first binding clip.Limiting component 6 is additionally provided between first lever and the second lever, it is spacing Part is screw, and the first lever includes lever head and shank part, lever head t shape, end of the lever head towards the second lever It is provided with screw, screw inward turning limited location part.Second lever includes lever head and shank part, and lever head is in forked, bifurcated Position is hinged with plate member, promotes ratchet and retaining ratchet to be in bifurcated.The tail end of ratchet is promoted towards the second binding clip Side is extended with stopper 12, and the tail end of retaining ratchet is extended with stopper, is fixed with the second lever towards the side of the second binding clip Pin 16 and retaining pin 13 are promoted, promotes pin corresponding with the stopper for promoting ratchet, the gear of retaining pin and retaining ratchet Portion is corresponding.

Broken string process is referring to Fig. 3：Driving cog is meshed with little ratchet, promotes ratchet and retaining ratchet mutually to nibble with large ratchet Close, hold two levers, the second lever towards the first lever is rotated, promote ratchet to promote large ratchet to rotate, large ratchet drives clavula Wheel is rotated, and dynamic second binding clip of little ratchet straps is rotated around hinge point, and cutting edge closes up, and promotes ratchet to promote large ratchet rotation process In, retaining ratchet retreats a ratchet on large ratchet and withstands large ratchet.Second lever opens with respect to the first lever, is opening In the presence of spring, the second binding clip can drive clavula wheel revolution, and now retaining ratchet withstands large ratchet, promote ratchet to draw back one Individual ratchet, then closes up again the second lever, promotes ratchet to promote large ratchet to rotate again, so repeats to cause the second binding clip and the One binding clip close up complete cutting.Open the second lever and the first lever so that promote ratchet and retaining ratchet with large ratchet phase Separate, in the presence of spring is opened, power amplifies ratchet revolution, and the second binding clip opens with respect to the first binding clip.

Embodiment 2：A kind of labor-saving bolt cutter（Referring to Fig. 4）, difference from Example 1 is, the second binding clip and first Connected by two connecting plates 21 between binding clip, the first binding clip and the second binding clip are hingedly connected on connecting plate.Second binding clip and first Spring is not opened between binding clip, bow 18, one end of bow and second are provided between the second lever and the second binding clip Lever is hinged, and arcuate groove 19 is offered at the other end of bow, and limited location is fixed in the position of the second binding clip correspondence arcuate groove Part 20, locating part is inserted in arcuate groove and can be along arcuate groove sliding.Remaining structure is with reference to embodiment 1.

Second lever closes up with respect to the first lever, end position sliding of the locating part along arcuate groove to bow, until Second binding clip closes up with the first binding clip.When second lever opens with respect to the first lever, locating part is along arcuate groove towards bow One end sliding of close second lever is simultaneously slid onto arcuate groove extreme position, and the second lever is now opened again, and bow is by limit Position part promotes the second binding clip to open.

Embodiment 3：A kind of labor-saving bolt cutter（Referring to Fig. 5 Fig. 6）, difference from Example 1 is, the second binding clip and Connected by two connecting plates 21 between one binding clip, the first binding clip and the second binding clip are hingedly connected on connecting plate.Second binding clip and Spring is not opened between one binding clip, the second lever fixes jacking block 22, and the end of jacking block is reached outside the second lever, and jacking block is relative Second lever is tilted, and the angle of inclination makes jacking block amplify after ratchet is separated in retaining ratchet and power can be abutted against with the second binding clip And promote the second binding clip to rotate.Remaining structure is with reference to embodiment 1.

When second lever opens, jacking block is gradually close and contacts with the lateral surface of the second binding clip, opens after contact again Two levers, jacking block just promotes the second binding clip to open.

Embodiment described above is a kind of preferred version of the present utility model, and any shape is not made to this utility model Restriction in formula, also has other variants and remodeling on the premise of without departing from the technical scheme described in claim.

Claims (10)

1. a kind of labor-saving bolt cutter, including the first binding clip and the second binding clip being hinged, drives the first binding clip and the second binding clip Close up or the first separate lever and the second lever, it is characterised in that with the first lever to be fixedly connected, second clamps the first binding clip Head is connected between the second lever by amplifying the ratchet mechanism of power output, and ratchet mechanism includes that power amplifies ratchet and promotion Power amplifies the promotion ratchet and retaining ratchet of pawl wheel, is provided with the second binding clip and amplifies the transmission that ratchet is meshed with power Tooth.

2. labor-saving bolt cutter according to claim 1, it is characterised in that it is co-axially fixed two ratchet that power amplifies ratchet, two The reference diameter of ratchet is different, and the wherein little little ratchet of reference diameter is meshed with the second binding clip, and reference diameter is big Large ratchet is connected by promoting ratchet and retaining ratchet with the second lever.

3. labor-saving bolt cutter according to claim 1, it is characterised in that promote the length of ratchet more than the length of retaining ratchet Degree, promotes ratchet to be to be articulated and connected with retaining ratchet and the second lever, and the hinge point is provided with holddown spring.

4. labor-saving bolt cutter according to claim 1, it is characterised in that retaining ratchet is articulated with the end of the second lever, pushes away Pawl is articulated with the second lever end by middle position.

5. labor-saving bolt cutter according to claim 1, it is characterised in that the position for promoting ratchet to engage with power amplification ratchet Amplify the position that ratchet engage with the second binding clip and power to be just placed in the both sides at power amplification pawl wheel center；Promote ratchet court Amplify the arc shape of the side for indent of ratchet to power.

6. the labor-saving bolt cutter according to claim 1 or 3 or 4 or 5, it is characterised in that promote the tail end of ratchet towards second The side of binding clip is extended with stopper, and the tail end of retaining ratchet is extended with stopper towards the side of the second binding clip, solid on the second lever Surely there are promotion pin and retaining pin, promote pin corresponding with the stopper for promoting ratchet, the gear of retaining pin and retaining ratchet Portion is corresponding.

7. the labor-saving bolt cutter according to claim 1 or 2 or 3 or 4 or 5, it is characterised in that the second binding clip and the first binding clip Between connection open spring, open spring and be connected between the tail end of the second binding clip and the first binding clip；First lever is held with second Limiting component is additionally provided between handle.

8. the labor-saving bolt cutter according to claim 1 or 2 or 3 or 4 or 5, it is characterised in that the first binding clip and the first lever Between be connected by two plate member, two plate member be separated, the first binding clip, the second binding clip, the first lever and the second lever It is in locating between two plate member, ratchet mechanism is between two plate member.

9. the labor-saving bolt cutter according to claim 1 or 2 or 3 or 4 or 5, it is characterised in that the second lever and the second binding clip Between be provided with bow, one end of bow is hinged with the second lever, and arcuate groove is offered at the other end of bow, Finite place piece is fixed in the position of two binding clips correspondence arcuate groove, and locating part is inserted in arcuate groove and can be along arcuate groove sliding.

10. the labor-saving bolt cutter according to claim 1 or 2 or 3 or 4 or 5, it is characterised in that the second lever fixes jacking block, The end of jacking block is reached outside the second lever, and jacking block is tilted with respect to the second lever, and the angle of inclination makes jacking block in retaining ratchet Amplifying with power can abut against with the second binding clip after ratchet is separated and promote the second binding clip to rotate.