CN2758020Y - New type shifting wrench - Google Patents

Abstract

The utility model relates to a novel shifting wrench. The jaw position at the front end of a fixed clamp pawl or a movable clamp pawl is provided with an open type chamfering structure, and the chamfering jaw position is additionally provided with a plurality of sawteeth. On the basis of the use function of the existing wrench, the utility model can be applied to nuts with various shapes through the improvement of the structure. When the utility model is used, the nut is simply inlaid and positioned, is tightly clamped and is not easy to slip.

Description

Novel shfting wrench

Technical field

The utility model relates to a kind of novel shfting wrench, designs the fastening structure that is applied to all kinds nut specifically on the basis of existing spanner.

Background technology

At daily life and production and processing scene, shfting wrench is a kind of normally used handling instrument, in order to the nut of installation and removal different shape and type.

Existing shfting wrench structure is comparatively simple, its fixedly the jaw of chela and moveable jaw be concordant, when fixing chela is squeezed in two parallel faceted pebbles of nut respectively with moveable jaw and is fixed, driving handle rotates nut clockwise or counterclockwise, and then nut is installed or disassembled.

Existing shfting wrench can only be used in the hexangle type nut, and for the old nut of round nut or faceted pebble corrosion, wearing and tearing, fixedly chela that its jaw is concordant and moveable jaw are difficult to fasten nut and are easy to skid even can't use.

When using shfting wrench, will come fastening fixedly chela and moveable jaw needs to proofread repeatedly in addition according to nut appearance and size.When fixedly the distance between chela and the moveable jaw was too small, nut can't embed into.Normally earlier above-mentioned distance is put into largely, and then further dwindles, thereby use and waste time and energy.

The utility model content

Novel shfting wrench described in the utility model, its purpose of design are to solve above-mentioned existing use problem and shortage and in the design of the front end jaw place of fixedly chela or moveable jaw one open chamfering structure are arranged, and increase several sawtooth at chamfering jaw place.Improve by said structure, can be applicable to the nut of various profiles on the basis that is having existing spanner function of use concurrently, nut embeds that the location is easier, clamping is more fastening and is difficult for skidding during use.

For realizing that nut is snapped in the location more quick and precisely, at the fixedly chela of described shfting wrench or the front end jaw place design of moveable jaw one acute angle chamfering is arranged, and fixedly the rear portion jaw of chela and moveable jaw is still concordant.

The fixing chamfering of chela or moveable jaw front end jaw, its angular range is 0.1 °-80 °.

In the fixing designed chamfering of front end jaw of chela or moveable jaw, make that fixedly the front end jaw of chela and moveable jaw forms the outside Open architecture of an opening.When need snapped in nut between the jaw, a side chamfering in fact just played the effect of spigot surface.Only fixedly the distance between chela and the moveable jaw is amplified slightly, nut can be snapped in the location, and the extruding clamp nut is finished at once.

When the wearing and tearing of nut generation corrosion or faceted pebble comparatively serious and during difficult twisting, can firmly nut be pushed between the jaw and form interference fit along described chamfering, the jaw torsion of the fixedly chucking power of chela and moveable jaw front end jaw increase, shfting wrench also correspondingly increases at this moment, can address the above problem to a certain extent.

For thoroughly solving the problem that is difficult to dismantle owing to nut generation corrosion or serious wear, novel shfting wrench described in the utility model also has following further improvement project, promptly is provided with several sawtooth at the fixing front end jaw chamfering place of chela or moveable jaw.

Described sawtooth is positioned at the front end jaw place of fixing chela or moveable jaw, does not hinder nut to snap in from open front end jaw.

Fixedly chela or moveable jaw with front end jaw chamfering and sawtooth, rear portion jaw each other is still concordant, thereby novel shfting wrench described in the utility model still can use by existing spanner.

When using described Leading end chamfer sawtooth to cooperate the twisting nut, be that the digonous hand-deliver boundary line with nut snaps between the sawtooth, do not have the fixedly chela of sawtooth or the concordant jaw in rear portion of moveable jaw and push another faceted pebble and form torsional interaction power.Even thereby nut surface corrosion or serious wear, also can obtain to twist by the snap effect of sawtooth one side nut required than high pulling torque power.

As mentioned above, use described novel shfting wrench and can realize following advantage and beneficial effect:

1, described novel shfting wrench has the function of use of existing shfting wrench concurrently, needn't be equipped with existing shfting wrench in addition.

2, improve not quite for existing shfting wrench, improve cheap for manufacturing costly, be easy to promote the use of.

3, use above-mentioned novel spanner, simple when nut snaps in the location, effectively increase work efficiency.

4, use above-mentioned novel spanner, can obtain, be adapted to wear and tear and the nut of corrosion situation uses for the bigger clamping action power of nut.

5, use above-mentioned novel spanner, can be directly applied for cylindrical or other erose nuts, function is equivalent to use instruments such as pipe wrench.

6, use the Leading end chamfer sawtooth of above-mentioned novel spanner, both can realize clockwise shearing installation nut, also can realize twisting dismounting nut counterclockwise.

7, use above-mentioned novel spanner, can once snap in repeatedly twisting continuously behind the nut, it is time saving and energy saving that the operating time shortens, uses.

Description of drawings

Now in conjunction with the accompanying drawings the utility model is described further:

Fig. 1 is the structural representation of described novel shfting wrench;

Fig. 2 is to use described novel shfting wrench to realize the schematic diagram of existing spanner function;

Fig. 3 is used the schematic diagram that described chamfering and sawtooth are realized the nut twisting.

Described novel shfting wrench comprises, handle 1, and head 2 advances screw mandrel 3, and fixedly chela 4, moveable jaw 5.Also has nut 6.

Fixedly chela 4 has front end jaw 41, rear end jaw 42, chamfering sawtooth 43;

Moveable jaw 5 has jaw 51;

The angle of chamfering α between front end jaw 41 and the jaw 51 is 10 °.

The specific embodiment

Embodiment 1, and as Fig. 1 to Fig. 3, described novel shfting wrench comprises handle 1, and head 2 advances screw mandrel 3, fixedly chela 4 and moveable jaw 5.Wherein,

Form a chamfering α between the front end jaw 41 of the fixedly chela 4 of described novel shfting wrench and the jaw 51 of moveable jaw 5, chamfering α is 10 °.And fixedly the rear portion of the jaw 51 of the rear end jaw 42 of chela 4 and moveable jaw 5 is still concordant.

Also be provided with several sawtooth 43 at the fixing front end jaw 41 formed chamfering places of chela 4.

As shown in Figure 2, fixedly the front end jaw of chela 4 and moveable jaw 5 forms an outside hatch frame.When snapping in nut 6 between the jaw, it is more or less freely that nut 6 snaps in the location.

And, utilize fixedly chela 4 and the concordant jaw in the rear portion of moveable jaw 5 still can realize having now the function of use of shfting wrench.

As shown in Figure 3, nut for surface corrosion or serious wear, the digonous hand-deliver boundary line of nut 6 can be snapped between the sawtooth 43, and the concordant jaw 51 in the rear portion of moveable jaw 5 is squeezed on another faceted pebble, the snap effect power by sawtooth 43 1 sides obtain to twist nut 6 required than high pulling torque power.

And, not only can along clockwise, but also can realize installation or removal quickly and easily along twisting nut in the counterclockwise direction.

Promptly be whole schemes of novel shfting wrench described in the utility model as mentioned above.

Claims (3)

1, a kind of novel shfting wrench, include handle, head, propelling screw mandrel, fixedly chela and moveable jaw, it is characterized in that: design has an acute angle chamfering at the front end jaw place of described fixedly chela or moveable jaw, and fixedly the rear portion jaw of chela and moveable jaw is still concordant.

2, novel shfting wrench according to claim 1 is characterized in that: the scope of described front end jaw chamfering is 0.1 °-80 °.

3, novel shfting wrench according to claim 1 and 2 is characterized in that: the place is provided with several sawtooth in described front end jaw chamfering.

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