CN2039249U

CN2039249U - Self-adjusting wrench

Info

Publication number: CN2039249U
Application number: CN 88204631
Authority: CN
Inventors: 赵润生
Original assignee: Individual
Current assignee: Individual
Priority date: 1988-04-16
Filing date: 1988-04-16
Publication date: 1989-06-14

Abstract

The utility model belongs to an adjustable wrench of a hand tool, which makes use of a set of simple mechanisms composed of cranks, connecting rods and slide block to realize self clamping without adjusting the size of a wrench opening like the general adjustable wrench. Simultaneously, the adjustable wrench finishes clamping work by wrenching forward and reversely a wrench handle multiple times like a ratchet wrench without taking out the wrench after turning a certain angle and changing one clamping surface to continue to screw. In addition, as gaps of the adjustable mechanism do not exist, the adjustable wrench can be used as a pipe wrench. Thus, the utility model is an integral adjustable wrench with the functions of the general adjustable wrench, the ratchet wrench and the pipe wrench.

Description

Self-adjusting wrench

The utility model belongs to the adjustable wrench of hand-operated tools class.

Existing adjustable wrench must be earlier rotates adjusting worm gear on the adjustable wrench with hand before tighting a bolt, make to pull mouthful size and just can tight a bolt when consistent with hex bolts area of bed S.Such adjustable wrench exists following shortcoming:

1, when need are tightened the plurality of specifications bolt that varies in size, must repeatedly regulate and pull a mouthful size, very cumbersome;

2, have in limited time when the spanner space, spanner must take off spanner after rotating a certain angle, goes back to certain angle, reclamps bolt head and rotates, and tightens repeatedly repeatable operation of a bolt;

3, owing to regulating worm gear and pulling between mouthful slide block tooth bar certain interval is arranged, its gap of particularly old spanner is bigger, the not tight phenomenon of folder so often takes place or need regulate once more worm gear midway.Realize if want to tighten pipe then be difficult to adjustable wrench.

Task of the present utility model is exactly to provide a kind of novel automatic adjusting to pull the adjustable wrench of mouthful distance at above-mentioned shortcoming.

This task is to realize with following technical scheme: this spanner is the same with existing adjustable wrench to comprise a handle, pull a mouthful dead piece, pull a mouthful slide block.Its improved part is: adjusting worm gear and the worm-shaped tooth of pulling on mouthful slide block have gone to disappear, and handle 1 is become a Y shape fork, one of them bifurcated is with to pull mouthful dead piece 4 hinged, and another bifurcated is by connecting rod and to pull mouthful slide block 5 hinged and constitute a crank-connecting rod-slide block mechanism.When needs tight a bolt, be mounted on the turret head earlier, then with the hand handle that turns clockwise pulling a mouthful dead piece, crank (Y shape handgrip 1 two pin-and-hole center on lines) rotation, promote to pull 5 translations of mouthful slide block by connecting rod, clamp turret head, then rotate with handle.When the spanner space has in limited time, needn't take off spanner, only need rotate counterclockwise handle, then pull mouthful meeting and change an angle counterclockwise, change the working face that clamps turret head, so this spanner can be bolted on continuously as ratchet spanner.

This novel spanner has following advantage:

1, saved to regulate and pulled mouthful structure and the operation of size, thereby simplified the structure, made things convenient for use, when particularly needing to tighten in turn the bolt that specification varies in size;

2, can bolt on saving of work and time repeatedly continuously as ratchet spanner;

3, there is not the gap of governor motion, has auto-lock function, can not unclamp thereby in rundown process, pull mouth.If after increasing the striated groove on the flat clamping of pulling mouth, this spanner still can use as pipe wrench.This spanner structure is simple in a word, and is easy to use, be a kind of common work pull, ratchet spanner, pipe wrench comprehensively be the novel adjustable wrench of one.

Fig. 1 is an example structure schematic diagram of the present utility model.

Fig. 2 is second embodiment front view of the present utility model.

Fig. 3 is second embodiment vertical view of the present utility model.

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

Referring to Fig. 1.1 is Y shape handle, and with to pull mouthful dead piece 4 hinged, another bifurcated is hinged by pin 8 and connecting rod 7 by pin 2 for one of them bifurcated, and the other end of connecting rod 7 is by pin 6 and to pull mouthful loose piece 5 hinged.So form a crank-connecting rod-slide block mechanism.Wherein, two pin-and-hole center on lines on the Y shape handle 1 are crank section, and 7 is connecting rod, pull mouthful slide block 5 and are slide block.So when handle 1 rotated, crank rotated thereupon,, make slide block 5 parallel moving by connecting rod 7.

For the excessive corner of handle 1 turning anticlockwise, even will pull mouthful slide block 5 and pull off, a stop screw 3 will be housed, on handle 1 according to the length that it stretches out, the backhaul scope that just can regulate handle 1.

Referring to Fig. 2.Present embodiment is used to tighten king-bolt and uses.The difference of it and embodiment 1 is:

1, Y shape handle 1 assembles conversely;

2, pull within mouthful dead piece 4 breach and be made up of four limits of hexagon, two other limit is made of the V-notch of pulling mouthful slide block 5.Pulling mouthful slide block 5 can be parallel mobile in pulling mouthful groove of dead piece 4.When the fishbolt turret head, then pull mouthful dead piece 4 and pull mouthful slide block 5 regular hexagon hole of formation just.

3, pull a groove 7 is arranged on mouthful slide block 5 ', garden pin 8 penetrate the pin-and-hole of handle 1 and groove 7 ' in.When handle 1 rotation, straight pin 8 can be along groove 7 ' move and promote to pull mouthful slide block 5 parallel moving, and clamps or unclamps bolt head.Present embodiment also constitutes a crank-connecting rod-slide block mechanism.

Claims

1, the adjustable wrench of mouthful distance is pulled in a kind of automatic adjusting, comprises handle, pulls a mouthful dead piece, pull a mouthful mouthful slide block, it is characterized in that handle 1 is Y shape fork, one of them bifurcated is with to pull mouthful dead piece 4 hinged, and another bifurcated is by connecting rod and to pull mouthful slide block 5 hinged and constitute crank connecting link one slide block mechanism.

2, according to claim 1 from the roll adjustment adjustable wrench, it is characterized in that connecting rod 7 one ends in crank-connecting rod-slide block mechanism with to pull mouthful slide block 5 hinged, a bifurcated in the other end and the Y shape handle 1 is hinged.

3, according to claim 1 from the roll adjustment adjustable wrench, it is characterized in that pulling have on mouthful slide block 5 groove 7 ', a bifurcated to pulling mouthful slide block 5 and handle 1 with straight pin 8 links up simultaneously, and when handle 1 rotation, straight pin 8 can be along pulling groove 7 on mouthful slide block 5 ' move.

4, according to claim 1 or 2 or 3 described, it is characterized in that on Y shape handle 1, also being equipped with a stop screw 3 from the roll adjustment adjustable wrench.