CN2039252U - Ratchet wrench with an additional movable operating head - Google Patents

Abstract

The utility model discloses a ratchet wrench with an additional movable operating head, particularly relating to that aiming to the inconvenient use of a general ratchet wrench, the force application rod of the ratchet wrench is added with a movable operating head which can be operated by one hand or two hands according to operating environment and can substitute the ratchet wrench to screw screws and screw caps needing to be screwed in with strong force for obtaining the aim of protecting the ratchet wheel operating head of the ratchet wrench. The optimal use effect can be obtained via the flexible collocation of two working head operating heads.

Description

Ratchet wrench with an additional movable operating head

The utility model is about ratchet spanner that a kind of additional active formula working head is provided, refer to a kind of convertible force mechanism and the work-saving device that can be used with ratchet spanner commonly used especially.

Screw wrench is general common hand-held tool, be subjected to popular the liking of consumption deeply owing to can do the degree of tightness loading and unloading of screw easily, a lot of because of its form, and the pluses and minuses of each tool are very not identical, but common person has a long effort handle more, so as to when the parbuckle screw, can reach laborsaving purpose, ratchet spanner commonly used is as the same, because of the adjustable ratchet device of its inner tool one, therefore comparatively convenient in the use, but it also has the shortcoming of existence, existing narration as back:

One, ratchet spanner commonly used be because of the adjusting device of tool ratchet, and therefore when loosening, tighten screw, the strength of being bestowed is very easily destroyed the ratchet structure of inside, promptly lost its function of use in the course of time in a flash.

Its two, because of the arm of force long, can't freely-movable in less space, delay carrying out of mounting or dismounting screw on the contrary.

In view of the foregoing, the creator all has deep experience, spirit based on its research innovation, through continuous test improvement, be to develop the utility model meticulously, its main purpose is to be it to be free to slide additional working head of the present utility model on the ratchet spanner effort handle commonly used on effort handle, simultaneously it is rigid body design, therefore in the misgivings of the moment of parbuckle screw not damaged during the application of force.

Another purpose of the utility model is the length of its convertible arm of force, and the scope of application increases, and can operate, fully save strength simultaneously by both hands simultaneously.

Fig. 1: be the exploded perspective view of the utility model

Fig. 2: be the occupation mode stereogram of the utility model

Present conjunction with figs., the structure function that the utility model is described in detail in detail is as back:

See also the exploded perspective view of Fig. 1 the utility model, the occupation mode stereogram of Fig. 2 the utility model:

The primary structure of the utility model is an additional sliding head (11) on the force application rod of a ratchet spanner (10), and fixes a steel ball (12) in the tail end of force application rod, in case sliding stop working head (11) slippage.This sliding head (11) is column type, central authorities tool one hole (13) is square cylinder (14) to be enclosed within the force application rod upper and lower end, and establishes a hole (15), built-in spring (16) and embedding one steel ball (17) can be socketed on the square cylinder (14) screw socket (not painting).The purpose of the utility model additional work head, be the length (shown in accompanying drawing 2 arrows) of its reliable change arm of force that slides, and owing to tear open, during the dress screw, the strength that its moment bestows is bigger, if only by the manual words of ratchet wrench, destructible ratchet structure then, and the utility model is a rigid body, therefore its design kenel is enough to bear any strength, when the strength peak value of the moment that unscrews or screw screw, can operate with working head of the present utility model, exchange operation by ratchet spanner again, but also can the both hands or the singlehanded application of force, not only prolong the life-span of ratchet spanner, and very convenient on using.

Claims (2)

1, a kind of ratchet spanner of additional active formula working head refers to a kind of convertible force mechanism especially, and the work-saving device that can cooperate ratchet spanner to be used, and it is characterized by it and comprises:

One sliding head has the moulding of cylinder, and there is a hole in the stage casing, and the lower end is a square cylinder, and this cylinder is provided with hole, the built-in spring in hole and a steel ball;

Above-mentioned additional work headgear can be adjusted with being free to slide the length of the arm of force on the force application rod of sour jujube birch spanner.

2, the ratchet spanner of the additional active formula working head described in claim 1, it is characterized by; when the moment that must bear demolition, installation screw during peak power; this additional work head can use with the ratchet spanner exchange; with the life-span of protection ratchet; the design of its slidingtype can supply both hands or one-handed performance; the end fixed steel ball of force application rod is in case the slippage of turning one's head.