CN2410082Y

CN2410082Y - Self-locking power-increasing pliers

Info

Publication number: CN2410082Y
Application number: CN 00219647
Authority: CN
Inventors: 储昕
Original assignee: Southeast University
Current assignee: Southeast University
Priority date: 2000-03-17
Filing date: 2000-03-17
Publication date: 2000-12-13
Anticipated expiration: 2010-03-17

Abstract

The utility model relates to a pair of self-locking power-increasing pliers which is a pair of power-increasing pliers having the advantages of self-locking function, convenient one-handed operation, convenient carrying and large power-increasing rate. The pair of power-increasing pliers is composed of a free handle, a main handle, self-locking devices, a gearwheel, a pinion wheel, pliers heads, a pliers head rotating shaft, a rotating shaft and a pressure spring, wherein, the rotating shaft is fixed on the middle part of the main handle, and the gearwheel and the pinion wheel are fixed in to integration and are hinged together with the free handle on the rotating shaft. The self-locking devices are separately arranged on the main handle and the free handle, and the pliers heads are hinged on the front end of the main handle through the pliers head rotating shaft; the back parts of the pliers heads are provided with pliers head engaging teeth which are engaged with the pinion wheel.

Description

The self-locking power-increasing pliers

The utility model is a kind ofly to have auto-lock function and power-increasing pliers one-handed performance, belongs to the technical field that hardware ﹠ tools is made.

Thereby all in the market power-increasing plierses all are the effects that reached reinforcement by long handle as lever, these power-increasing pliers ubiquity volumes are big, relatively heavier, the shortcoming that needs bimanualness, and the force increasing ratio maximum can not surpass 50 yet, therefore up to the present, the power-increasing pliers that people use also rests on state of the art decades ago, do not have new, the power-increasing pliers that big force increasing ratio and volume are little occurs, with regard to this technology of power-increasing pliers,, be that the mode of handle reaches the purpose that increases force increasing ratio with the lengthening arm of force at last all though people explore constantly, thereby caused volume constantly to increase, heavy more.

It is little, in light weight that goal of the invention of the present utility model just provides a kind of volume, one-hand operation, and the bigger self-locking power-increasing pliers of force increasing ratio.

Self-locking power-increasing pliers of the present utility model mainly is made up of flexible handle, main handle, self-locking device, gear wheel, pinion, binding clip, binding clip rotating shaft, rotating shaft, stage clip, rotating shaft is fixed on the middle part of main handle, gear wheel, pinion is fixed as one and is hinged in this rotating shaft with flexible handle, self-locking device is located at respectively on main handle and the flexible handle, binding clip is hinged on the front portion of main handle by the binding clip rotating shaft, the rear portion of binding clip is provided with the binding clip engaging tooth, and this binding clip engaging tooth is meshed with pinion.The tooth stress surface of gear wheel is facing directly perpendicular to the gear center of circle.Self-locking device is made up of reset button, connecting rod, steel wire, removable pin, extension spring, this self-locking device lays respectively in the handle of main handle and flexible handle, one end of connecting rod is hinged on the interior axle of handle, the other end and the steel wire of connecting rod join, one side of the other end of steel wire and removable pin fixes, two termination extension springs of the opposite side of removable pin, the other end of extension spring is fixed in the handle, and the middle part and the reset button of connecting rod are hinged.Rotating shaft is provided with a return spring, and the center fixation of return spring is in rotating shaft, and the outer ring of return spring is fixed on the pinion.During use, with holding tight flexible handle and main handle, removable pin in the locking device is stuck in the vertical flank of tooth of gear wheel at this moment, gear wheel is rotated, because gear wheel and pinion are fastened to each other, so also rotation thereupon of pinion, thereby drive the binding clip engaging tooth by pinion again, binding clip is rotated, reach the purpose that binding clip is clamped.When needs continue further to clamp, the reset button in the self-locking device on the flexible handle press...withes one's finger, this moment, connecting rod rotated, make removable pin be drawn out the tooth portion of gear wheel, because the effect of stage clip, flexible handle will upwards lift automatically, at this moment just can repeat above-mentioned operation and further workpiece be clamped.When needs unclamp binding clip, the reset button in the self-locking device that press...withes one's finger down respectively on main handle, the flexible handle, this moment, two connecting rods rotated, make two removable pins all be drawn out the tooth portion of gear wheel, because the return spring effect in the rotating shaft, big pinion rotates simultaneously, drives binding clip and opens.

Advantage of the present utility model is little, in light weight, the one-hand operation of this power-increasing pliers volume, and force increasing ratio can reach about hundred times, and is also better than the reinforcement effect of present long handle power-increasing pliers, and easy to carry, not only can be used for clamping, can also be used for the various reinforcing bars of pinch off and use.

Fig. 1 is a general structure schematic diagram of the present utility model.Comprising flexible handle 1, sliding tray 11, open slot 12; Main handle 2, sliding tray 21, gear grooved 22; Self-locking device 3, reset button 31, connecting rod 32, axle 321, steel wire 33, removable pin 34, extension spring 35; Gear wheel 4, stress surface 41; Pinion 5; Binding clip 6, binding clip rotating shaft 61, binding clip engaging tooth 62; Rotating shaft 7, return spring 71; Stage clip 8.

Fig. 2 is a contour structures schematic diagram of the present utility model.

Fig. 3 be among the figure I A-A to the sectional structure schematic diagram.

Embodiment of the present utility model is as follows:

At first make two onesize gear wheels 4 and a pinion 5, the one side of the canine tooth gear teeth is for perpendicular to the facing directly of the gear center of circle, and the another side of tooth is the inclined-plane, and in fact gear wheel is a ratchet, and pinion is fixed on forms a gear train between two gear wheels.Make main handle 2 and flexible handle 1 then, be provided with a binding clip, be provided with a gear grooved 22 at the middle part of main handle, be provided with the sliding tray 21 that a self-locking device is used at the rear portion of this gear grooved at the front end of main handle; Front end at flexible handle 1 is provided with an open slot 12, and the gear train of being made up of two gear wheels and pinion is arranged in this open slot, is provided with sliding tray 11 at the rear portion of open slot.Self-locking device 3 lays respectively in the sliding tray of main handle and flexible handle.Self-locking device is made up of reset button 31, connecting rod 32, axle 321, steel wire 33, removable pin 34, extension spring 35, one end of connecting rod is hinged on the axle 321, the other end of connecting rod is connected with steel wire 33, the other end of steel wire links to each other with removable pin, the two ends of the opposite side of removable pin are connected with spring 35, the other end of spring 35 is fixed on the handle, also is hinged with reset button 31 at the middle part of connecting rod, the stretching out outside the handle of reset button.The rear portion of binding clip 6 is provided with the binding clip engaging tooth 62 with pinion, and binding clip 6 is hinged on the front portion of main handle by binding clip rotating shaft 61.On general structure, pinion 5 is fixed on gear train of middle composition of two gear wheels 4, this gear train is positioned at the open slot 12 of flexible handle 1, then flexible handle and gear train are installed in the gear grooved 22 of main handle 2 and are hinged in the rotating shaft 7, binding clip is meshed with pinion 5 by front portion, the binding clip engaging tooth 62 that binding clip rotating shaft 61 is hinged on main handle.Removable pin in the self-locking device is stuck in the tooth of gear wheel, in addition, also is provided with stage clip 8 between main handle and flexible handle, just can realize the utility model according to the above.

Claims

1. self-locking power-increasing pliers, by handle, rotating shaft, binding clips etc. are formed, it is characterized in that this power-increasing pliers is by flexible handle (1), main handle (2), self-locking device (3), gear wheel (4), pinion (5), binding clip (6), binding clip rotating shaft (61), rotating shaft (7), stage clip (8) is formed, rotating shaft (7) is fixed on the middle part of main handle, gear wheel (4), pinion (5) is fixed as one and is hinged in this rotating shaft (7) with flexible handle (1), self-locking device (3) is located at respectively on main handle (2) and the flexible handle (1), binding clip (6) is hinged on the front portion of main handle by binding clip rotating shaft (61), the rear portion of binding clip (6) is provided with binding clip engaging tooth (62), and this binding clip engaging tooth (62) is meshed with pinion (5).

2. self-locking power-increasing pliers according to claim 1 is characterized in that the tooth stress surface (41) of gear wheel (4) is facing directly perpendicular to the gear center of circle.

3. self-locking power-increasing pliers according to claim 1 and 2, it is characterized in that self-locking device is by reset button (31), connecting rod (32), steel wire (33), removable pin (34), extension spring (35) is formed, this self-locking device lays respectively in the handle of main handle (2) and flexible handle (1), one end of connecting rod (32) is hinged on the interior axle (321) of handle, the other end of connecting rod (32) and steel wire (33) join, one side of the other end of steel wire (33) and removable pin (34) fixes, two termination extension springs (35) of the opposite side of removable pin (34), the other end of extension spring is fixed in the handle, and the middle part of connecting rod (32) and reset button (31) are hinged.

4. self-locking power-increasing pliers according to claim 1 and 2 is characterized in that rotating shaft (7) is provided with a return spring (71), and the center fixation of return spring is in rotating shaft (7), and the outer ring of return spring (71) is fixed on the pinion (5).