CN2644102Y

CN2644102Y - Improved ratchet wrench

Info

Publication number: CN2644102Y
Application number: CN 03258194
Authority: CN
Inventors: 刘玲琅
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-08-04
Filing date: 2003-08-04
Publication date: 2004-09-29
Anticipated expiration: 2013-08-04

Abstract

The utility model relates to an improved ratchet spanner, which is provided with a head at the end of the ratchet spanner bar. The head is applied to contain the tool head and the ratchet blocks; a tool head containing groove whose hemline is provided with a convex resisting ring plate is arranged on the head of the bar, and a ratchet blocks containing groove connecting with the tool head containing groove is arranged next to the bar on the head; two inner margin surfaces coordinating with the ratchet blocks are arranged on the both sides of the ratchet blocks containing groove; a front wards reset ratchet blocks is arranged in the head ratchet blocks groove; the curve degree of the ratchets which mashes with the tool head is less than the curve degree of the ratchet on tool head, making the ratchet ratchet of the block mash with the ratchet of the tool head; an outer margin which coordinates with the inner margin of the ratchet blocks containing groove is arranged on the both sides of the back margin of the ratchet blocks; the ratchet blocks can be moved towards both sides of the centre line; the outer margin appearing after the ratchet blocks moved stick against the inner margin of the ratchet blocks containing groove; a cut groove coordinating with the ratchet blocks containing groove is arranged on the top margin of the top head, and a cover sheet is inserted in the cut groove; a series of ratchets are arranged on the outer margin of the tool head; the ratchet blocks mesh with the tool head, and a button pole extends out from the top of the ratchet block and the button pole passes through the cover sheet; a transverse button pole groove is arranged in the center of the cover sheet and can be pulled out easily, the twisting resistance performance is high, the operation is convenient, and also the service life is long.

Description

Improved ratchet spanner

One, technical field

The utility model relates to hand tools, relate in particular to a kind of driving lever by directly on action sour jujube piece, forming, and the project organization that cooperates sour jujube piece two ends lateral border to fit fully with sour jujube piece tank both sides inner edge, make ratchet spanner simultaneously with being easy to DIP and the high effect of twisting resistance performance, improve the convenience of operation, the improved ratchet spanner that increases the service life.

Two, background technology

Ratchet spanner is a kind of hand tools for the rapid packing of user or release bolt or nut, its use is very extensive, its structure as shown in Figure 1, handle bar 10 ends of holding are provided with a bigger head 11, head 11 central authorities are provided with for the tool heads tank 12 that installs tool heads 20, and head 11 forms the sour jujube piece tank 13 and shifting block tank 14 that is communicated with tool heads tank 12 in succession with 10 on handle bar, is used for being installed with respectively sour jujube piece 22 and shifting block 15; Again, shifting block tank 14 inner bottom surfaces are formed with a pivot groove 140, and its wall is provided with a containing hole 141 to 10 extensions of handle bar, can be for the top tip 160 and the flexible members 161 that shore shifting block 15 are set in the containing hole 141, and shifting block 15 relative walls are provided with DIP arc edge 151, make shifting block 15 stir the location, back; In addition, shifting block 15 bottom surfaces are provided with a pivot piece 150 corresponding with pivot groove 140; Moreover the outer rim of these shifting block 15 corresponding sour jujube pieces 22 is provided with one and holds hole 152, and is provided with for the top tip 170 and the flexible member 171 of shoring sour jujube piece 22 in the appearance hole 152, and the wall of sour jujube piece 22 correspondences forms location arc edge 23; Again, tool heads 20 outer rims form the ratchet 21 corresponding with sour jujube piece 22, turn to the location to utilize sour jujube piece 22 confession tool heads 20, and head 11 is provided with position limiting structure 25 at tool heads tank 12 upper limbs, so that tool heads 20 is locked in the head 11.Though existing ratchet spanner can have the effect of general hand tools, but, it has some problems during fabrication really has to be solved, please cooperate referring to Fig. 2, shown in Figure 3,1, the assembly of this ratchet spanner is a lot, therefore, no matter be all comparatively complicated in manufacturing or stock, appearance hole 152, pivot piece 150 and the tool heads 20 of the containing hole 141 of its handle bar 10, pivot groove 140, shifting block 15 and tool heads tank 12 etc. have at least eight places need carry out cent(e)ring simultaneously, higher to its required precision accordingly, the bad probability of its manufacturing is improved.So the manufacturing process difficulty is bigger, and because parts are many, corresponding meeting stock buildup amount is so its whole manufacturing cost is high, has reduced the market competitiveness virtually.2, brought forward is described, and this ratchet spanner has deviation slightly because the tolerance permissible range is little when therefore making as can be known, and the positive motion after its combination is just not good, and phenomenon takes place to dally improperly in regular meeting, influences the convenience of user's operation.In order to solve the problems referred to above that existing ratchet spanner exists, once there was the dealer to create the novel patent case that a kind of application number is No. 89221901 " a ratchet spanner block-dialing structure ", it mainly establishes a changer lever at the curved shifting block end face lock of the arc with salient angle, cover a location lid on the accommodation space of wrench body, the location lid has the guide hole corresponding with changer lever, though this application case has solved above-mentioned existing ratchet spanner manufacturing and operational problem, but it is the same with existing ratchet spanner, still exist some that disappearance to be overcome and inconvenience are arranged, such as: A, twisting resistance is poor.Because the lateral border of its shifting block is formed with a salient angle in addition, and the lateral border of this shifting block is different with the accommodation space inner edge shape of wrench body, therefore when shifting block when wherein a side is stirred, shifting block is almost only replaced at the accommodation space inner edge with single-point, and then cause its twisting resistance only to have this contact point to bear, if cooperate the gap that tolerance produces when making again, then the positioning tooth of shifting block load is excessive, easily the phenomenon that collapses tooth.B, service life lack.Brought forward is described, because ratchet spanner is in the process that operation is pulled, shifting block only utilizes single-point and accommodation space inner edge surface to replace, will cause the stressed inequality of each tooth like this, one will cause the application of force excessive accidentally slightly, and take off the tooth phenomenon, and also cause the teeth abrasion simultaneously easily, invisible has been shortened the life-span of using.C, positive motion are poor.Because shifting block is being stirred clip spine move part one rear flank, be meshing with each other fully between the teeth of shifting block and spine move part, like this, when the reverse idle running of ratchet spanner desire, because the interlock grinding tooth of shifting block and spine move part is more, cause the reaction force of the relative spine move part of shifting block to strengthen, sensitivity as spring reduces, and makes spanner when reverse idle running, can slightly drive the revolution of nut or bolt, positive motion when influencing the ratchet spanner revolution, waste acts on the time of screw lock nut or bolt.

Via above-mentioned explanation, be understood that it is poor that existing ratchet spanner has twisting resistance, service life, problem such as short and positive motion difference caused reducing whole competitiveness, so be necessary further improvement.

In view of this, research and development and the manufacturing experience of the utility model creator by being engaged in related industry for many years, deeply inquire at the problems referred to above, research and experiment through long-term endeavour, finally success to create a kind of twisting resistance strong, be easy to the improved ratchet spanner of DIP, thereby reach the purpose that increases the service life and promote positive motion.

Three, utility model content

Main purpose of the present utility model is to overcome the above-mentioned shortcoming that existing product exists, and provide a kind of improved ratchet spanner, the driving lever that it forms on action sour jujube piece, and sour jujube piece two ends lateral border can be fitted fully with sour jujube piece tank both sides inner edge, make ratchet spanner simultaneously with being easy to DIP and the high effect of twisting resistance performance, reach the convenience that improves operation, the effect that increases the service life.

The purpose of this utility model is realized by following technical scheme.

The improved ratchet spanner of the utility model, free wrench handle boom end are provided with a bigger head, and can supply a ccontaining tool heads and a sour jujube piece in the head; It is characterized in that, described handle club head is provided with the tool heads tank that a root edge has the convex contact ring sheet, this head adjacent hub bar one side is provided with the sour jujube piece tank of a connectivitv tool tank, the both sides of this sour jujube piece tank are provided with the inner edge surface corresponding with the sour jujube piece, be provided with a sour jujube piece that can reset forward automatically in the head sour jujube piece tank, the ratchet curvature of this sour jujube piece and tool heads engagement is less than the ratchet curvature of tool heads, make the part ratchet and the tool heads ratchet engagement of sour jujube piece, sour jujube piece posterior lateral margin both sides are provided with and the corresponding outer edge surface of sour jujube piece tank inner edge surface, the sour jujube piece can be dialled respectively to tool heads center line both sides and move, outer edge surface after the skew of sour jujube piece can paste on the inner edge surface that is against corresponding sour jujube piece tank, and the apical margin of the corresponding sour jujube piece of head top surface tank is provided with the short slot of recess, and this short slot covers sheet for being embedded one; The tool heads outer rim is provided with serial ratchet, the engagement of sour jujube piece and tool heads, and sour jujube piece end face has protruded out a driving lever, and this driving lever passes and covers sheet, wherein covers the horizontal allocating slot that sheet central authorities are provided with a correspondence, and it is strong and be easy to the improved ratchet spanner of DIP to constitute a twisting resistance thus.

Aforesaid improved ratchet spanner, wherein the sour jujube piece can be offset about 20 degree to either side, and sour jujube piece outer edge surface have approximately 1/3rd with sour jujube piece tank inner edge surface paste fully to, sour jujube piece ratchet have approximately 1/3rd with the tool heads ratchet engagement, with the raising twisting resistance, and promote the positive motion that dallies.

Aforesaid improved ratchet spanner, wherein head short slot both sides end face is provided with screw, covers sheet and is provided with corresponding perforation, utilizes the locking bolt to make and covers the sheet locking on head.

Aforesaid improved ratchet spanner, wherein tool heads is form of sleeve or projection form.

Aforesaid improved ratchet spanner, wherein the rear surface of head sour jujube piece tank is provided with a containing hole with the top tip and flexible member, and the corresponding lateral margin of sour jujube piece is provided with a location arc edge, turns to the location, back for tool heads.

Aforesaid improved ratchet spanner, wherein head sour jujube piece tank rear surface is provided with a location arc edge, and the corresponding lateral margin of sour jujube piece is provided with a containing hole with the top tip and flexible member, turns to the location, back for tool heads.

Four, description of drawings

Fig. 1 is the stereochemical structure decomposing schematic representation of existing ratchet spanner, is used to describe in detail the relativeness of its formation and each assembly.

Fig. 2 is for having the planar structure schematic diagram after ratchet spanner is formed now.

Fig. 3 is the operating state schematic diagram of existing ratchet spanner, and it discloses the mode of operation of existing ratchet spanner.

Fig. 4 is a stereochemical structure decomposing schematic representation of the present utility model, is used to describe in detail the correlative positional relation of formation of the present utility model and each assembly.

Fig. 5 forms the back plane structural representation for the utility model ratchet spanner.

Fig. 6 is an operating state schematic diagram of the present utility model, further specifies the utility model and stirs corresponding relation when turning to and using.

Fig. 7 is the decomposition texture schematic diagram of another embodiment of the utility model.

The number in the figure explanation

The prior art part: 10 handle bars, 11 heads, 12 tool heads tanks, 13 sour jujube piece tanks, 14 shifting block tanks, 140 pivot grooves, 141 containing holes, 15 shifting blocks, 150 pivot pieces, 151 DIP arc edge, 152 hold hole, the 160 top tips, 161 flexible members, the 170 top tips, 171 flexible members, 20 tool heads, 21 ratchets, 22 sour jujube pieces, 23 location arc edge, 25 position limiting structures;

The utility model part: 50 handle bars, 51 heads, 52 tool heads tanks, 53 convex contact ring sheets, 54 sour jujube piece tanks, 540 inner edge surfaces, 541 inner edge surfaces, 55 containing holes, 56 short slots, 57 screws, 58 sour jujube piece tanks, 581 location arc edge, 60 tool heads, 61 ratchets, 63 sour jujube pieces, 630 outer edge surfaces, 631 outer edge surfaces, 84 location arc edge, 65 driving levers, 66 shores, 660 arc protuberances, 67 back-moving springs, 68 containing holes, the 690 top tips, 691 flexible members, 70 cover sheet, 71 allocating slots, 72 perforation, 73 locking bolts.

Five, the specific embodiment

The utility model is mainly by following technological means, the purpose usefulness that specific implementation is above-mentioned.This ratchet spanner is provided with a bigger head at a handle boom end, can be for being installed with a tool heads and a sour jujube piece in the head; The handle club head is provided with the tool heads tank that a root edge has the convex contact ring sheet, and this head adjacent hub bar one side is provided with the sour jujube piece tank of a connectivitv tool tank, and the both sides of this sour jujube piece tank are provided with the inner edge surface corresponding with the sour jujube piece; Moreover, be provided with a sour jujube piece that can reset forward automatically in the head sour jujube piece tank, these sour jujube piece posterior lateral margin both sides are provided with and the corresponding outer edge surface of sour jujube piece tank inner edge surface, and when the sour jujube piece is dialled when moving to a side wherein, the outer edge surface of this side of sour jujube piece can paste on the inner edge surface that is against corresponding sour jujube piece tank fully, and head top surface is provided with the short slot of recess at the apical margin of corresponding sour jujube piece tank, covers sheet for being embedded one; Wherein, the outer rim of tool heads is provided with serial ratchet, and the sour jujube piece is suitable can be meshed with tool heads, and sour jujube piece end face has protruded out a driving lever, and this driving lever can pass and cover sheet, covers the horizontal allocating slot that sheet central authorities are provided with a correspondence; Thus, it also can promote its twisting resistance significantly except that can having the characteristic that is easy to DIP, avoid taking off the tooth phenomenon, and can reduce the abrasion of ratchet, increases the service life, and more can further improve the positive motion that reverses operation.

Next the utility model is with a preferred embodiment, and conjunction with figs. and figure number further specify.

The utility model is a kind of improved ratchet spanner that improves twisting resistance and be easy to DIP, consult Fig. 4, shown in Figure 5, this ratchet spanner mainly is provided with a bigger head 51 in a handle bar 50 ends, and can be in the head 51 for being installed with a tool heads 60 and a sour jujube piece 63, with idle running and the spacing direction of utilizing sour jujube piece 63 control tool heads 60; Wherein, head 51 is provided with the tool heads tank 52 that a root edge has convex contact ring sheet 53, be used for ccontaining tool heads 60, again, head 51 adjacent hub bars 50 1 sides are provided with the sour jujube piece tank 54 of a connectivitv tool tank 52, the both sides of this sour jujube piece tank 54 are provided with the inner edge surface 540,541 corresponding with sour jujube piece 63, and both sides inner edge surface 540,541 can be used for correspondence and is tight against sour jujube piece 63; Moreover, head 51 is provided with the containing hole 55 of a depression at the wall of sour jujube piece tank 54, the apical margin of the corresponding sour jujube piece of head 51 end faces tank 54 is provided with the short slot 56 of recess, covers sheet 70 for being embedded one, and head 51 is provided with in the scope of short slot 56 for lock and establishes the screw 57 that covers sheet 70; Tool heads 60 can be form of sleeve or projection form, and tool heads 60 outer rims are provided with serial ratchet 61, and in addition, sour jujube piece 63 end faces that the wall two ends have ratchet have protruded out a driving lever 65, and this driving lever 65 can pass and cover sheet 70; Moreover sour jujube piece 63 inner edge curvatures are less than the curvature of tool heads 60 outer rims, dial when moving to a side when sour jujube piece 63, make corresponding the dialling of sour jujube piece 63 move the gemmule tooth and mesh with tool heads 60 ratchets 61; Again, sour jujube piece 63 posterior lateral margin both sides are provided with and the corresponding outer edge surface 630,631 of sour jujube piece tank 54 inner edge surfaces 540,541, and when sour jujube piece 63 is dialled when moving outer edge surface 630,631 suitable can the subsides fully on the inner edge surface 540,541 that is against corresponding sour jujube piece tank 54 (as shown in Figure 6) of sour jujube piece 63 these sides to a side wherein by corresponding tool heads 60 center lines; Moreover, sour jujube piece 63 posterior lateral margin stage casings are provided with the location arc edge 64 of recess, and be provided with shore 66 and back-moving spring 67 in head 51 containing holes 55, shore 66 end faces are provided with arc protuberance 660 can make the location of sour jujube piece 63 more certain for replacing on the location of sour jujube piece 63 arc edge 64; Cover the horizontal allocating slot 71 that sheet 70 central authorities are provided with corresponding sour jujube piece 63 driving levers 65, allow driving lever 65 can stir sour jujube piece 63 and carry out left and right moving, cover the perforation 72 that sheet 70 both sides are respectively equipped with corresponding head 51 screws 57, to utilize locking bolt 73 will cover sheet 70 lockings on head 51, and cover sour jujube piece 63 and tool heads 60, it is strong and be easy to the improved ratchet spanner of DIP to constitute a twisting resistance thus.

Practice of the present utility model, at first, consult Fig. 5, shown in Figure 6, when rotating screw element, the user is with 65 groups of allocating slot 71 1 sides to corresponding rotation direction of driving lever of sour jujube piece 63, but make sour jujube piece 63 simultaneous bias, the ratchet 61 of the ratchet of the corresponding skew of sour jujube piece 63 sides and engagement tool 60, allow the outer edge surface 630 of sour jujube piece 63 respective side simultaneously, 631 paste the inner edge surface 540 that is against corresponding sour jujube piece tank 54 fully, 541, make sour jujube piece 63 partly ratchet and 61 engagements of tool heads 60 ratchets, when the user pulls, make tool heads 60 stuck when sour jujube piece 63, can reach the purpose that changes direction or location, and further allow the two ends of sour jujube piece 63 press from both sides fully to pull, to produce the locating effect of the best 54 of tool heads 60 and sour jujube piece tanks; Like this, except that can improving the twisting resistance, and when the application of force was big more, clip power was strong more, thereby can avoid taking off the tooth phenomenon, effectively increased the service life.

Another embodiment of the utility model, as shown in Figure 7, it mainly is provided with a location arc edge 581 at head 51 sour jujube piece tanks 58 posterior lateral margins of spanner handle bar 50, sour jujube piece 63 trailing edges are provided with the containing hole 68 of a recess, be provided with a top tip 690 and flexible member 691 in this containing hole 68, the tip suitable location arc edge 581 that can shore sour jujube piece tank 58 in top is for turning to the location.

Via above-mentioned explanation, but the utility model effective simplification assembly reduces manufacturing cost, and can stir the sour jujube piece fast, the convenience of raising operation, the effect of further have following effect: A simultaneously, promoting twisting resistance.Because the outer edge surface of sour jujube piece is after stirring the location, can paste fully with the inner edge surface of sour jujube piece tank to, make the sour jujube piece form the situation of similar two sides clamping, so, the sour jujube piece will be subjected to spacing fully, and can not produce any gap, and its adaptation of the application of force is good more more, can allow the suffered load of ratchet of sour jujube piece more average, significantly improve the effect of sour jujube piece ratchet twisting resistance, and the difficult phenomenon that collapses tooth.B, increase the service life.Brought forward is described, because ratchet spanner is in the process that operation is pulled, sour jujube piece and sour jujube piece tank are the tight subsides of two sides clamping to shape, teeth mean forced so not only, nor the phenomenon that can take off tooth can also reduce the wearing and tearing of ratchet significantly, effectively increases the service life.C, raising positive motion.Because the sour jujube piece is being stirred the first rear flank of clip instrument, sour jujube piece and tool heads have only partly ratchet engagement, when the reverse idle running of ratchet spanner, because the interlock grinding tooth of sour jujube piece and tool heads is less, therefore compare with existing product, the reaction force of the relative tool heads of the utility model sour jujube piece is less, and the sensitivity that further improves spring, so, when spanner during in reverse idle running, can not drive the revolution of nut or bolt, the positive motion in the time of can improving the ratchet spanner revolution, the time of shortening screw lock.D, reduce cost.Though cover the side periphery that sheet only covers tool heads, but because the application of force direction of tool heads is axial rotation shape, different with the application of force direction of covering sheet, moreover, design by sour jujube piece special shape, in course of action, the applying degree of sour jujube piece and tool heads is good more, and its stationarity does not have any problem more, can reduce unnecessary wholecircle Zhou Jiagong and assembly, so, can further simplify manufacturing process, effectively reduce its cost.E, driving lever stroke shorten.The utility model is compared with the shifting block salient angle of existing ratchet spanner, the utility model sour jujube piece carries out the effect of clip location with the location arc edge of depression, therefore when sour jujube piece DIP, its distance that only needs spring to be pushed up a ratchet down can allow the sour jujube piece be displaced to other side, and existing product must be longer distance, simultaneously, because the utility model only need allow the sour jujube piece part ratchet be arranged by the tool heads clip, can utilize the rotation of tool heads that it is located fully, but existing ratchet spanner then must allow shifting block locate fully earlier, in comparison, the improved ratchet spanner of the utility model to stir stroke shorter.

By above-mentioned structural design, the utility model is except that the shortcoming that has solved existing ratchet spanner existence, also improved the twisting resistance performance, and has an effect that is easy to DIP, the result of use ideal, and in identical technical field, do not see identical or approximate product public use, so, the utility model meets the important document of the relevant novelty of utility model patent, creativeness, practicality, files an application in accordance with the law.

The above, it only is preferred embodiment of the present utility model, be not that the utility model is done any pro forma restriction, every foundation technical spirit of the present utility model all still belongs in the scope of technical solutions of the utility model any simple modification, equivalent variations and modification that above embodiment did.

Claims

1, a kind of improved ratchet spanner, the free wrench handle boom end is provided with a bigger head, and header contents is put tool heads and sour jujube piece; It is characterized in that, described handle club head is provided with the tool heads tank that a root edge has the convex contact ring sheet, this head adjacent hub bar one side is provided with the sour jujube piece tank of a connectivitv tool tank, the both sides of this sour jujube piece tank are provided with the inner edge surface corresponding with the sour jujube piece, be provided with a sour jujube piece that resets forward automatically in the head sour jujube piece tank, the ratchet curvature of this sour jujube piece and tool heads engagement is less than the ratchet curvature of tool heads, make the part ratchet and the tool heads ratchet engagement of sour jujube piece, sour jujube piece posterior lateral margin both sides are provided with and the corresponding outer edge surface of sour jujube piece tank inner edge surface, outer edge surface after the skew of sour jujube piece pastes on the inner edge surface that is against corresponding sour jujube piece tank, the apical margin of the corresponding sour jujube piece of head top surface tank is provided with the short slot of recess, and this short slot covers sheet for being embedded one; The tool heads outer rim is provided with serial ratchet, sour jujube piece and tool heads engagement, and sour jujube piece end face has protruded out a driving lever, and this driving lever passes and covers sheet, wherein covers the horizontal allocating slot that sheet central authorities are provided with a correspondence.

2, improved ratchet spanner according to claim 1, it is characterized in that, described sour jujube piece can be offset about 20 degree to either side, and sour jujube piece outer edge surface about 1/3rd and sour jujube piece tank inner edge surface paste fully to, sour jujube piece ratchet about 1/3rd and tool heads ratchet engagement.

3, improved ratchet spanner according to claim 1 and 2 is characterized in that, described head short slot both sides end face is provided with screw, covers sheet and is provided with corresponding perforation, utilizes the locking bolt to make and covers the sheet locking on head.

4, improved ratchet spanner according to claim 1 and 2 is characterized in that, described tool heads is form of sleeve or projection form.

5, improved ratchet spanner according to claim 1 and 2 is characterized in that, the rear surface of described head sour jujube piece tank is provided with a containing hole with the top tip and flexible member, and the corresponding lateral margin of sour jujube piece is provided with a location arc edge, turns to the location, back for tool heads.

6, improved ratchet spanner according to claim 1 and 2 is characterized in that, described head sour jujube piece tank rear surface is provided with a location arc edge, and the corresponding lateral margin of sour jujube piece is provided with a containing hole with the top tip and flexible member, turns to the location, back for tool heads.