CN2309204Y - High-torque-resistance ratchet wrench D head - Google Patents

Abstract

The utility model provides an anti high torsion's ratchet spanner D head structure, characterized by designs two circular arcuation recesses on the piece of inlaying, makes it be in a long straight line with the piece ratchet of inlaying and ratchet contact position of the recess position that the steel ball of location pushed up under the stress state, and the direction of eating is the same to played the effect of sharing torsion or improving spanner torsion resistance, had the efficiency that improves torsion resistance.

Description

Anti-high torsion ratchet spanner D head

The utility model is a kind of ratchet spanner, particularly a kind of D ratchet spanner with anti-high torsion structure.

Traditional ratchet spanner because the restriction, the particularly limitation of the structure of embedding clamp dog of its D header structure, makes alignment pin be in the restriction ratchet of embedding clamp dog and the ratchet contact position of driving end rotation hole is in the same side, fails to bring into play the antitorque effect of power-assisted when spanner entails much effort.Twisting resistance ability that mutually should spanner is relatively poor, and the scope of application is narrower or be easier to damage.

Main purpose of the present utility model provides a kind of ratchet spanner D header structure of anti-high torsion.

The utility model is on the basis of the existing ratchet spanner D header structure defective of research, one improvement scheme is proposed, structure to spanner D head is transformed, make turning to and the new form of location structure design of D head, make ratchet spanner do the time spent, the alignment pin of location structure is in two of the same diameter line of ratchet that contacts with the ratchet of spanner rotation hole on the embedding clamp dog or respectively about the two halves radial line of same diameter line, like this, when the working head on the D head is done the torsion rotation, not only the restraint ratchet entails much effort, alignment pin also holds effect, has improved the anti-button power ability of ratchet.

In order to describe creativeness of the present utility model and progressive meaning in detail, be introduced in conjunction with the structure of existing ratchet spanner and the figure contrast of paying of the utility model structure, will help understanding of the present utility model.

Fig. 1 is existing ratchet spanner perspective exploded view.

Fig. 2 is existing ratchet spanner combination schematic diagram.

Fig. 3 is a perspective exploded view of the present utility model.

Fig. 4 is a combination schematic diagram of the present utility model.

Of the present utility model pair of figure also is a kind of embodiment schematic diagram.

Shown in Figure 1, a garden type rotation hole 12 is established in head 11 centers of known ratchet spanner 10, is provided with on the hole wall to be processed into to be covered with ratchet 13, and this hole is used to settle the D 20 of ratchet spanner; One intilted ladder type storage tank 21 is set in the middle part of this D head, the side up and down of groove is provided with a concentric hole, D axial centre one through hole 22 is set, and a control lever 40 is installed, one embedding clamp dog 30 is set, and its two side angle is processed into ratchet 31 respectively, is processed into an arch groove 32 between adjacent two jiaos of ratchet, this embedding clamp dog is controlled by alignment pin 45 and the spring 44 on the control lever 40, forms ratchet 31 or right location left.Control lever 40 is fixed on the D 20 by breach ring buckle 60, and be provided with a knob 41 and the body of rod 42, slotted eye 43, this hole is used for mounting spring 44 and alignment pin 45, above-mentioned each assembly more forms the represented ratchet D constitutional diagram of Fig. 2 through assembling, find out the shortcoming of this ratchet D head from Fig. 1 and Tu Ke:

1, after its embedding clamp dog is subjected to the limitation blocking location of alignment pin, stressed ratchet and the alignment pin side that exists together, when the user when driving the switching ratchet spanner, alignment pin fails suitably to keep out the active force from being subjected to force direction, more to the work of general higher torsion, relatively can't be competent at, i.e. the action of incompatible anti-higher torsion.

2, its embedding clamp dog only forms limitation by itself garden arc groove and alignment pin and locatees, and after stirring operation repeatedly, causes alignment pin to come off easily and damages, and has added the trouble in the use.

And improve through creation of the present utility model, then solved the disadvantage of above-mentioned known means fully, please see Figure 3 with Fig. 4: compare with known ratchet spanner, its main improvement is on embedding clamp dog 301, and next is on D 201 and toggle 601.Embedding clamp dog 301 is the block of half garden shape, two groups of ratchets 331 of processing and 341 on two relevant positions on one side, half garden, then be processed into two adjacent garden shape concave arcs 311 and 321 at another side, process the groove 351 of an oval in the centre, on D 201, the axial eccentric part of middle section position is processed a shape just in time can settle the vallecular cavity 231 that holds 301 embedding clamp dogs, processes a hole 241 in the bottom land side, and this hole is used to place spring 401 and positioning ball 501; Process a garden groove in D crown portion 221, make it to hold toggle 601, and on the cell wall of garden processing one groove, make it the notched ring buckle 701 laid on the inlay card 601, and be arranged to the projection 621 that a side has oval on 601, one side be a button 631, periphery has a groove 611, and annular buckle is buckled on this groove.Its assembling process is embedding system to be installed in spring and steel ball are inserted in the vallecular cavity 231 in 241 holes, again 601 packing in the garden shape groove of D head of loading onto snap ring 701, make in the long garden groove 351 in the long garden post 621 embedding embedding clamp dogs, make 701 to be mounted in the D head with 601, the complete D head that will assemble is then packed in the rotation hole 121 on ratchet spanner 101 heads 111, by another snap ring 701 groove of D stage casing end and the groove inlay card in the rotation hole 121 are fixed, and assembling is finished.Fig. 4 is after assembling is finished, the schematic diagram of D stress, when working head 211 stretches into certain soket head cap screw and pulls, move toggle 601, make the ratchet interlock in the rotation hole on the ratchet on embedding clamp dog right side and the driving end, the positioning ball of this moment then holds in the concave arc groove on the embedding clamp dog left side, impetus almost is on the diameter line, the torsion that is born is in same direction, make positioning ball also bear a part of torsion, this has just improved the anti-button force intensity of whole spanner, and the raising of this anti-button power ability relies on the improvement of D head structure, practice result to show to have reached this purpose fully.

Claims (1)

1. A kind of ratchet spanner D head of anti-high torsion is made up of D head, embedding clamp dog, direction toggle, alignment pin and spring, it is characterized in that said D stage casing eccentric part is provided with a storage tank, and bottom land is provided with a hole of laying alignment pin and spring; Said embedding clamp dog is one to be the block of half garden state, blocking when two groups of ratchets being set on this block two appropriate locations on one side being made for the both forward and reverse directions twisting, another side be processed with two mutually the garden arc flutings of handing-over be used for holding the location, an oval groove being set of positioning ball on the center, the oval projection that is used on the direction toggle is chimeric; Said direction toggle is a garden disk body, dish Zhou Jiagong one groove, be used to install a breach ring buckle, oval projection and manual toggle are set respectively up and down, after in spring and the steel ball load hole, again the embedding clamp dog is packed in the storage tank of D head, again the direction toggle that places ring buckle is installed in the hole, garden of D cephalic par and with in the oval groove of oval projection intercalation on the embedding clamp dog, during the D head that this assembling is finished is packed the rotation hole of ratchet spanner head into then, D Wrench head fixed by a clamping ring.

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