CN2091744U

CN2091744U - High-power pliers with improved jaw

Info

Publication number: CN2091744U
Application number: CN 91215563
Authority: CN
Inventors: 李昌淦
Original assignee: Individual
Current assignee: Individual
Priority date: 1991-06-10
Filing date: 1991-06-10
Publication date: 1992-01-01

Abstract

The utility model discloses a pair of high-power pliers with improved jaws. The jaws are changed into a fold line shape on the basis of the existing high-power pliers provided with a fixed head, a big handle, a movable head, a small handle, a spacer, a spring and a tail screw. The two opposite jaws are combined to form a rhombus. The surfaces of the jaws can be engraved with concave downwards teeth. Because the improvement, the damage for the object clamped is little. Many contacting points of the jaws and the object clamped make the object be easily clamped. The high-power pliers with improved jaws also have some basic functions of a wrench. The function and the field of application are added. The high-power pliers with improved jaws are durable.

Description

High-power pliers with improved jaw

The utility model relates to manual clamping device, specifically, is a kind of pliers that has the locking device that combines with the device of tension jaw or control stick.

The locking pliers that generally uses is a kind of universal hand tools at present, is widely used in each side such as life, industry, because locking pliers can clamp clipped object, this just makes it become the irreplaceable instrument of other working clamp.Locking pliers generally has leatherhead, big handle, movable head, stalklet, support shelves, spring, tail screw etc.; The relative inner of leatherhead and movable head constitutes jaw, jaw is toothed arc, it has bigger contact point when the cylindrical object that folder diameter and its arc match, and during in addition object of folder, two contact points are only arranged usually, can not clamp fully, also can crush clipped object and self simultaneously, thereby influence its application and working life in some cases.

The purpose of this utility model provides a kind of can making during most of object at folder and keeps two above contact-making surfaces, the improved locking pliers of jaw applied widely between jaw and clipped object.

Technical solution of the present utility model is: the improved locking pliers of a kind of jaw, have leatherhead, be connected the other end with stalklet with the fixedly connected big handle of leatherhead, the movable head relative, the stalklet that is connected with movable head, an end and be stuck in support shelves in the big handle, be contained in the spring between movable head lower end and big handle with leatherhead, leatherhead, movable head inboard are jaw, big handle end is equipped with the tail screw, its special character is: jaw is a polyline shaped, and two relative jaws close up the back and form rhombus.

Recessed tooth can be carved with in jaw of the present utility model surface.

The leading angle of the rhombus that forms after two jaws of the present utility model close up is big, and back angle is little, as 70 ° of leading angles, and 50 ° of back angles, certainly, above-mentioned two angles also can adopt other suitable angle.

The auxiliary disengagement handle of driving pincers is housed on the stalklet in the utility model.

The broken line mid point of two jaws in the utility model can omit inclined to one side anteposition in preceding 1/4-2/5 place.

The utility model has the advantages that: the degree of injury to clipped object is lighter than existing locking pliers; Contact point between jaw and clipped object is many, and easier grip objects especially clamps better effects if to the object with square-section; Can have some basic functions of adjustable wrench concurrently, can be under the situation of not damaging nuts the bolt of the many specifications of degree of tightness, thereby increased the function and the scope of application, and durable in use.

The utility model is described in further detail below in conjunction with drawings and Examples:

Accompanying drawing has been described an embodiment of the present utility model.The leatherhead 1 of band polyline shaped jaw 7 is fixedlyed connected with big handle 2 by

rivet

11,12, and the movable head 3 of band polyline shaped jaw 8 is connected with big handle 2 by rivet 13, and there is galvanized wire otch 17

jaw

7,8 lower ends on movable head 3, the leatherhead 1; Movable head 3 lower ends are connected with a stalklet 4 by rivet 14, and movable head 3 lower ends also have an end hook of 18, extension springs 6 of a connecting hole in hole 18, and the other end is hooked in the middle part of big handle 2; One end of support shelves 5 is connected with stalklet 4 by rivet 15, and the other end is stuck in the big handle 2; Another rivet 16 on the stalklet 4 is used for connecting an auxiliary disengagement handle 10 of driving pincers, throws off

handle

10 and 4 of stalklets stage clip can be housed, and certainly, is adopting the drawing type stalklet, when throwing off handle and support shelves, can not need stage clip.The end of big handle 2 has screw thread, and a tail screw 9 is contained in the screw thread, and the front end of tail screw 9 withstands the end in the big handle 2 of being stuck in of support shelves 5.

Operation principle of the foregoing description and existing locking pliers are similar.

Jaw 7,8 in the foregoing description closes up the rhombus that the back constitutes, and its leading angle can be about 70 °, and back angle can be about 50 °, certainly, also can be other proper angle, and recessed tooth is carved with on the surface of jaw 7,8.Reducing damage to gripping object, the broken line mid point of

jaw

7,8 slightly partially before, about 2/5 place, certainly, also other appropriate value is as 1/3,1/4 etc., with more laborsaving and flexible in use.

Claims

1, the improved locking pliers of a kind of jaw, have leatherhead, be connected the other end with stalklet with the fixedly connected big handle of leatherhead, the movable head relative, the stalklet that is connected with movable head, an end and be stuck in spacer in the big handle, be contained in the spring between movable head lower end and big handle with leatherhead, leatherhead, movable head inboard are jaw, big handle end is equipped with the tail screw, it is characterized in that: jaw is a polyline shaped, and two relative jaws close up the back and form rhombus.

2, the improved locking pliers of jaw according to claim 1, it is characterized in that: recessed tooth is carved with on the jaw surface.

3, the improved locking pliers of jaw according to claim 1 and 2 is characterized in that: the leading angle of the rhombus that forms after two jaws close up is big, and back angle is little.

4, the improved locking pliers of jaw according to claim 1 and 2 is characterized in that: the auxiliary disengagement handle of driving pincers is housed on the stalklet.

5, the improved locking pliers of jaw according to claim 1 and 2 is characterized in that: the slightly inclined to one side anteposition of the broken line mid point of two jaws is in preceding 1/4-2/5 place.

6, the improved locking pliers of jaw according to claim 3 is characterized in that: the slightly inclined to one side anteposition of the broken line mid point of two jaws is in preceding 1/4-2/5 place.