CN2698523Y

CN2698523Y - Double-level type labor-saving pincer

Info

Publication number: CN2698523Y
Application number: CN 200420017535
Authority: CN
Inventors: 陆邕逢
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-03-23
Filing date: 2004-03-23
Publication date: 2005-05-11
Anticipated expiration: 2014-03-23

Abstract

The utility model discloses a double-level type labor-saving pincer, comprising handles and clamping jaws. The double-level type labor-saving pincer is characterized in that the inner ends of the handles are provided with a connecting through hole and bending heads capable of bending outward, and the inner ends of the clamping jaws are equipped with a connecting through hole and arc force arms capable of bending inward. The four angles of the inner ends of the two handles and the two clamping jaws are provided with a square frame board corresponding to the through hole by bolts movable connecting. The two bending heads contact with the inner sides of the two arc force arms. A spring is mounted between the two arc force arms. The pincer of the structure respectively uses the bolts and the through hole of the inner ends of the clamping jaws and the bolts and the through hole of the inner ends of the handles as supporting points to be provided with double-level structure. The shearing force of a shears mounted on the head of the clamping jaws is greatly enhanced by utilizing the double-level structure. Smaller active force is imposed on the handles to easily cut iron wire phi 3-phi 8mm or concrete iron with phi 3-phi 8mm so that the application range and the effect of the pincer is increased. The double-level type labor-saving pincer is favorable to generalize and apply, and is suitable for holding, clamping or cutting body.

Description

The double lever labor-saving plier

Technical field

The utility model relates to a kind of hand-operated tools, especially pliers.

Background technology

At present, the pincers that can be used for clamping, clamp and cut off bar also have much, and structure and shape are varied, in factory, scientific research, building, resident's finishing, plant maintenance, hospital, family etc. use are arranged all, use very extensive.Pliers generally all comprises handle and jaw, is provided with rotational structure between handle and jaw, controls the jaw clamping, clamps or cut off object by operating grip.But the pliers that can cut off Φ 3～Φ 8mm iron wire or reinforcing bar easily is few, and the structure of these pliers is complicated, cost is also higher, is unfavorable for popularization and application, serves the people.

Summary of the invention

The purpose of this utility model provides a kind of double lever labor-saving plier, and it should be able to cut off iron wire or the reinforcing bar of Φ 3～Φ 8mm easily, and, simple in structure, cost is low and easy to use.

The utility model comprises handle and jaw, it is characterized in that:

Be provided with connection open-work and bandy elbow in the inner end of handle, be provided with the connection open-work and the aduncate arc arm of force in the inner end of jaw; The open-work of the inner end of two handles and jaw is provided with the square frame plate that connects open-work with four jiaos and connects by bolt is movable, and handle two elbows contact with jaw two arc arm of force opposed inside respectively.

Between the inboard of the two arc arm of forces, be connected with spring.

The pliers of said structure is respectively with the open-work of jaw inner end and the open-work and the bolt thereof of bolt and handle inner end thereof, as fulcrum, be provided with two lever constructions, promptly open-work and the bolt thereof with the jaw inner end is fulcrum, the arc arm of force is as power arm, and the jaw part is as resistance arm; Open-work and bolt thereof with the handle inner end are fulcrum, and the length of handle is power arm, and elbow is a resistance arm, and the output of the power of elbow acts on the arc arm of force.So title is the double lever labor-saving plier.The utilization of two lever constructions, strengthen the strength of jaw greatly, promptly more strengthened the shearing force that is located at scissors on the jaw head, made it on handle, to apply less action force, just can cut off iron wire or the reinforcing bar of Φ 3～Φ 8mm easily, increase the range of application and the effect of pliers.And, simple in structure, cost is also low, operates identical with existing pliers.Help applying, serve the people better.Thereby achieve the goal.

Description of drawings

Shown in Figure 1, be that structure master of the present utility model looks schematic diagram.

Shown in Figure 2, be that schematic diagram is looked on the left side of Fig. 1.

The specific embodiment

Below in conjunction with accompanying drawing, the utility model is described in further detail.

In the structural representation of Fig. 1 and Fig. 2, for express clearly up and down and about draw bail, in Fig. 2, the draw bail at bolt place has up and down been done to analyse and observe.The lower end of handle 1 is with sheath 2, and bandy elbow 3 is arranged in upper end just the inner, also is provided with the open-work 13 that can pass down bolt 4.Two elbows 3 of two handles 1 are lateral bending outside two respectively.The lower end of jaw 8, promptly the inner is provided with the open-work 14 and the aduncate arc arm of force 12 that can pass bolt 7, all is provided with on two medial surfaces of the arc arm of force 12 to hang spring coil 5.The two ends of spring 11 are articulated in respectively on the extension spring coil 5 of both sides, and it is provided with and is beneficial to opening of two jaws 8.All be provided with open-work on four angles of square frame plate 6, and corresponding with the open-work 14 of the open-work 13 of handle 1 the inner and jaw 8 the inners, by last bolt 7 and following bolt 4 handle 1 and jaw 8 are linked up, and handle 1 and jaw 8 are opened flexibly.It is that chuck 9 and lower end are the structure of scissors 10 that this jaw 8 is made the upper end, and chuck 9 is used for clamping, cramping object, and scissors 10 is used to shear object.Certainly, four bolts also can adopt rivet or other pin to replace.The each several part of pliers connect good after, the elbow 3 of handle 1 is movable the connection with the respective inside sliding-contact of the arc arm of force 12, the connection at four bolt places, and as the fulcrum of turning cylinder and lever, makes pliers opening and closing neatly.

The operation principle and the using method of the utility model pliers are:

The following bolt 4 of first lever is a fulcrum, and handle 1 is the power arm of input power, and elbow 3 is a resistance arm; Second lever is a fulcrum with bolt 7, the arc arm of force 12 is a power arm, jaw 8 is a resistance arm, and output puts on the arc arm of force 12 as the power of resistance arm elbow 3, the handle 1 of every side, down bolt 4, elbow 3, the arc arm of force 12, go up bolt 7 and jaw 8 is all formed two coherent lever constructions.And as can be seen from the figure, the power arm of each lever construction is a labour-saving lever construction all greater than resistance arm.Be from another point of view an active force that puts on handle 1 after the level Four lever amplifies, on jaw 8, obtain a chucking power, clamping force or shearing force greater than the active force manyfold, the scissors part can be cut off Φ 3～Φ 8mm iron wire or reinforcing bar easily.Using method is the same, simple to operate with existing pliers.

Claims

1, a kind of double lever labor-saving plier, it comprises handle (1) and jaw (8), it is characterized in that:

Be provided with connection open-work (13) and bandy elbow (3) in the inner end of handle (1), be provided with the connection open-work (14) and the aduncate arc arm of force (12) in the inner end of jaw (8); The open-work of the inner end of two handles (1) and two jaws (8) (13 and 14) is provided with the square frame plate (6) that should connect open-work with four jiaos and connects by corresponding bolts (4 and 7) activity, the interior side contacts of two elbows (3) and the two arc arm of forces (12).

2, double lever labor-saving plier according to claim 1 is characterized in that:

Respectively be provided with on the two arc arm of force (12) inboards and hang spring coil (5), two hang between the spring coil (5), are provided with spring (11).