CN201471312U

CN201471312U - Labor-saving clamp

Info

Publication number: CN201471312U
Application number: CN2009201870694U
Authority: CN
Inventors: 周兴华; 顾兴保; 倪寿胜
Original assignee: JIANGSU JINLU GROUP CO Ltd
Current assignee: JIANGSU JINLU GROUP CO Ltd
Priority date: 2009-08-21
Filing date: 2009-08-21
Publication date: 2010-05-19
Anticipated expiration: 2019-08-21

Abstract

The utility model discloses a labor-saving clamp in which a clamp head can be automatically opened when at work and can be furled when not at work. The labor-saving clamp comprises a left handle and a right handle, wherein a left clamp head is fixedly arranged at the upper end of the right handle, and a sliding rod is arranged on the left handle and is arranged in a sliding groove at the lower end of a right clamp head in a sliding way; the left clamp head is movably hinged with the right clamp head through a clamp head pin, and left handle is movably hinged with the right handle through a handle pin fixed on the right handle; a lug boss is arranged at the middle lower part of the left handle, and the inner side of the lug boss is level with the inner side of the left handle; the left handle and the right handle are respectively sleeved with a left handle sleeve and a right handle sleeve, and a cavity is formed between the left handle sleeve and the inner side of the lug boss; and an inverted J-shaped elastic piece is movably arranged in the cavity. When at work, the outer side of the bending section of the elastic piece is propped against the inner side of the right handle, and when not at work, the tail end of the bending section of the elastic piece can be shifted to be propped against the inner side of the left handle. The utility model is suitable for cutting steel wires and other workpieces.

Description

Labor-saving plier

Technical field

The utility model relates to the hardware ﹠ tools field, relates in particular to a kind of labor-saving plier.

Background technology

Existing labor-saving plier comprises: left handle and right handles, be set with left binding clip in the upper end of right handles, the upper end of left handle is provided with slide bar, slide bar is slidingly arranged in the chute of right binding clip lower end, left side binding clip and right binding clip are movably hinged by the binding clip pin, and left handle and right handles are movably hinged by the handle pin that is fixedly installed on the right handles upper end.The labor-saving plier of said structure is relatively lighter in the process of shearing, laborsaving, but before shearing, need handle to be applied outside power by finger, left handle and right handles are outwards opened, right binding clip and left binding clip outwards open under the drive of handle and right handles respectively leftward, then handle are applied inside power, make right binding clip and left binding clip clamp workpiece, continue to apply inside power then, thereby realize the function of shearing.Before shearing, all to apply outside power to handle at every turn, right binding clip and left binding clip are opened, very trouble by finger.

The utility model content

Technical problem to be solved in the utility model is: will provide a kind of when work binding clip can open the labor-saving plier that binding clip can be drawn in when not working automatically.

For addressing the above problem, the technical solution adopted in the utility model is: labor-saving plier, comprise left handle and right handles, on right handles, be set with left binding clip, the upper end of left handle is provided with slide bar, slide bar is slidingly arranged in the chute of right binding clip lower end, left side binding clip and right binding clip are movably hinged by the binding clip pin, left handle and right handles are movably hinged by the handle pin that is fixedly installed on the right handles, the middle and lower part of described left handle is provided with boss, the medial surface of boss flushes with the medial surface of left handle, be arranged with left hand sleeve and right hand sleeve on left handle and the right handles respectively, be provided with cavity between the medial surface of left hand sleeve and boss, be movably set with the flexure strip that is reversed J shape in the cavity, when work, the lateral surface of the bending section of flexure strip and the medial surface of right handles offset, when not working, the medial surface that the end of flexure strip bending section can be allocated to left handle offsets.

The beneficial effects of the utility model are: when work, binding clip opens under the effect of flexure strip automatically, when not working, only needs whole flexure strip is allocated to the left handle inboard, and right binding clip and left binding clip can not open automatically with regard to drawing in.

Description of drawings

Structural representation when Fig. 1 is the utility model labor-saving plier preparation shearing;

Structural representation when Fig. 2 is the shearing of the utility model labor-saving plier;

Fig. 3 is the structural representation that in the utility model labor-saving plier flexure strip is allocated to the left handle medial surface when inconsistent;

Structural representation when Fig. 4 is right binding clip of the utility model labor-saving plier and the gathering of left binding clip;

Fig. 5 be among Fig. 1 A to the partial structurtes schematic diagram;

Fig. 6 be among Fig. 3 B to the partial structurtes schematic diagram;

Fig. 7 is a C-C cutaway view among Fig. 5.

Among the figure: 1, left handle, 2, right handles, 3, left binding clip, 4, slide bar, 5, right binding clip, 6, chute, 7, the binding clip pin, 8, handle pin, 9, boss, 10, the left hand sleeve, 11, right hand sleeve, 12, cavity, 13, flexure strip, 14, seamed edge.

The specific embodiment

Below in conjunction with accompanying drawing, the utility model labor-saving plier is described in further detail.

As Fig. 1, Fig. 5, shown in Figure 7, a kind of labor-saving plier, comprise left handle 1 and right handles 2, be set with left binding clip 3 in the upper end of right handles 2, left handle 1 is provided with slide bar 4, slide bar 4 is slidingly arranged in the chute 6 of right binding clip 5 lower ends, left side binding clip 3 and right binding clip 5 are movably hinged by binding clip pin 7, left handle 1 and right handles 2 are movably hinged by the handle pin 8 that is fixedly installed on the right handles 2, the middle and lower part of described left handle 1 is provided with boss 9, the medial surface of boss 9 flushes with the medial surface of left handle 1, be arranged with left hand sleeve 10 and right hand sleeve 11 on left handle 1 and the right handles 2 respectively, be provided with cavity 12 between the medial surface of left hand sleeve 10 and boss 9, be movably set with the flexure strip 13 that is reversed J shape in the cavity 12, when work, the lateral surface of the bending section of flexure strip 13 and right handles 11, when not working, the medial surface that the end of flexure strip 13 bending sections can be allocated to left handle 11 offsets.

Operation principle of the present utility model is: when labor-saving plier was sheared workpiece, as Fig. 1, Fig. 5, shown in Figure 7, the medial surface of the lateral surface of the bending section of flexure strip 13 and right handles 11 offseted.At this moment, right binding clip 5 is in open configuration with left binding clip 3, by left hand sleeve 10 and right hand sleeve 11 are inwardly applied active force, left handle 1 drive slide bar 4 in chute 6 to lower slider, thereby the lower end that promotes right binding clip 5 makes right binding clip 5 rotate around binding clip pin 7, make right binding clip 5 and left binding clip 3 mutual clampings, thereby reach the purpose of shearing.In this process, right handles 2 lateral surface to flexure strip 13 bending sections when inwardly rotating applies an inside active force, and the lateral surface of flexure strip 13 bending sections offsets with the medial surface of right handles 2 all the time, the bending section seamed edge 14 around boss 9 under the effect of right handles 2 medial surfaces that is flexure strip 13 rotates, and the following straightway of flexure strip 13 still is in the cavity 12, when shearing finished, flexure strip 13 was in the flexural deformation state---and shown in Figure 2.After shearing finishes, unclamp left hand sleeve 10 and right hand sleeve 11, right handles 2 is separated with left handle 1 under the effect that flexure strip 13 natural deformation recover, be that 13 pairs of right handles 2 of flexure strip apply an outside elastic force, make it to separate with left handle 1, right binding clip 5 and left binding clip 3 also open thereupon, reach right binding clip 5 and left binding clip 3 automatic open purposes, can shear next workpiece subsequently.

When labor-saving plier is not worked,, left handle 1 and right handles 2 need be closed up for the ease of being placed in the kit.At this moment, mobile again flexure strip 13 after the bending section of flexure strip 13 stirred to the right, the end of flexure strip 13 bending sections and the medial surface of left handle 1 are offseted, the following straightway of flexure strip 13 still is in the cavity 12, flexure strip 1 is in a small flexural deformation state---Fig. 3, shown in Figure 6, flexure strip 13 does not just contact with right handles 2 like this, just can not apply outside elastic force to right handles 2 yet, and left handle 1 and right handles 2 just can be closed up and can not opened automatically---and shown in Figure 4.Labor-saving plier can be put into kit subsequently.When labor-saving plier is worked, earlier left hand sleeve 10 and right hand sleeve 11 are applied outside power, make left handle 1 and right handles 2 be separated into maximum, when flexure strip 13 dials to position shown in Figure 5, flexure strip 13 automatically restores to position shown in Figure 1 under the effect of its small crooked deformation restoring force, can shear workpiece subsequently.

Claims

1. labor-saving plier, comprise left handle and right handles, be set with left binding clip in the upper end of right handles, left handle is provided with slide bar, slide bar is slidingly arranged in the chute of right binding clip lower end, left side binding clip and right binding clip are movably hinged by the binding clip pin, left handle and right handles are movably hinged by the handle pin that is fixedly installed on the right handles, it is characterized in that: the middle and lower part of described left handle is provided with boss, the medial surface of boss flushes with the medial surface of left handle, be arranged with left hand sleeve and right hand sleeve on left handle and the right handles respectively, be provided with cavity between the medial surface of left hand sleeve and boss, be movably set with the flexure strip that is reversed J shape in the cavity, when work, the lateral surface of the bending section of flexure strip and the medial surface of right handles offset, and when not working, the medial surface that the end of flexure strip bending section can be allocated to left handle offsets.