CN2115866U - Improved structure ratchet type wrench stop - Google Patents

Abstract

The utility model relates to an improved structure ratchet type wrench stopper which is mainly a stopper in the steering structure of a wrench. An arc-shaped fastening slot is arranged where is corresponding to a ratchet wheel. Arc-shaped angles are arranged on the both sides on the upper side of the stopper. The bottom of the stopper is corresponding to the high-energy arc-shaped resistant flanges of steel balls, and the both sides are provided with arc-shaped fastening slots for fastening the steel balls, which enables the stressed area of the stopper which teases the ratchet wheel to increase, and enables the slipping fastening of the steel balls to sure enough.

Description

Improved structure ratchet type wrench stop

The utility model relates to a kind of structure improved ratchet spanner brake block, mainly will be arranged with arc clamping slot, flange on the brake block, and when supplying to dial the commentaries on classics ratchet, contact area increases raising and is subjected to force intensity, and during commutation, bomb with steel balls is sliding quick, and the location is in fact steady.

General box socket set all is provided with the structure that can turn to, roughly shown in Fig. 1,5, wrench body 10 ratchet 13 of packing in inside, ratchet 13 increments then are arranged with a dead slot 11 for packing a brake block 40 into relatively, wrench body 10 is held relative dead slot 11 lower ends to offer one in addition and is put groove 14 simultaneously, hold the spring 15 of steel ball 16 with the end of packing into, wrench body 10 is the grip in opposite directions, establishes a breach 12 for the distance that moves for commutation button 30 horizontal; Wherein the relative sour jujube in both sides, brake block 40 upper end is held 13 dentation, be arranged with the draw-in groove 42 of tip-angled shape, bottom central authorities are the resistance angle 43 of dead slot 11 position projection tip-angled shapes relatively, resist 43 both sides, angle up be arranged with as tip-angled shape by groove 44, and the engagement groove 41 of end face is for being pressed into interlock for the raised lines 31 under the commutation button 30; Be during with the commutation of commutation button 30 interlock brake blocks 40, utilize brake block 40 side bayonet slot 42 embedding ratchets 13 in addition, with engagement groove 41 is fulcrum, the resistance angle 43 that conversion brake block 40 is held is in addition taken turns and is gone to ratchet 13, steel ball 16 also leans on groove 44 positions by other end simultaneously, the draw-in groove that card ends ratchet is end opposite with the steel ball embedding by groove, conversion with work brake block 40, the steel ball 16 of rear end tool spring 15 is depended on resist angle 43 and take advantage of a situation slip over and block end other limit by groove 44, form the state of brake block 40 commutations and stop.

Though said structure is simple and easy, there is following shortcoming often to take place on right the use;

(1) at first knows Fig. 5, shown in 6, though complying with ratchet 13, draw-in groove 42 is tip-angled shape, so on Fig. 6, show, when 40 groups of brake blocks change thorn wheel 13, ratchet 13 also has an anti-strength that pushes away relatively, and the pointed shape of draw-in groove 42 cooperates, and makes both contacts area only for A, B 2 points, in other words, ratchet 13 formed propulsive thrust, only can be by A, 2 institutes of B bear, and brake block 40 reverses the just greatly reduction of moment of torsion of ratchet 13 relatively, and the degree of stability of bearing moment of torsion, also reduce because of contact point is few equally, cause to meet with stresses lessly in the use, only can be applicable to the enforcement situation that stress is little, cause the suitable operability of ratchet spanner not enough to some extent.

(2) shown in Figure 5, steel ball 16 is sliding onto when holding in addition by groove 44 by an end with brake block 40 conversion, steel ball 16 is because of the narrow tip-angled shape by groove 44, not including in groove fully, and by touching in the side C that resists angle 43 sides, is that the sum total round trip with steel ball 16 only terminates in horizontal straight length D, short and small distance like this, the deflected condition of brake block 40 conversions just is difficult for differentiating relatively, has given birth to the query that whether has turned on earth, uses very not convenient clear.

(3) the resistance angle 43 of brake block 40 bottoms is the very little sharp-pointed dihedral of angle, must make and resist angle 43 end-to-end distances from longer, relatively, pulling in its top, to cause the distance that extracts back thereafter inevitable big for steel ball 16, cause steel ball 16 by resisting the rebound reaction time lengthening by groove 44 of angle 43 to other end, steel ball 16 makes that because of the obstruct of resisting angle 43 causes the sliding velocity reduction time speed of steel ball 16 relative blocking brake blocks 40 is just quick inadequately, certain conversely speaking.

By above-mentioned many shortcomings as can be known, brake block 40 structures in the past really cause inconvenience and puzzlement in the use, and necessity of improvement is arranged in fact.

In view of using, general ratchet spanner commonly used goes up common shortcoming, after deliberation after the improvement, develop a kind of structure improved ratchet spanner brake block of the utility model eventually, the uncommon brake block that can improve above-mentioned ratchet spanner is difficult for dialling fast changeing, bear the shortcoming that is produced when dial changeing with can't stablizing than high pulling torque, the relative ratchet of brake block is provided with the clamping slot of tool arc angle, in dialling bottom side two ends that change, steel ball is provided with the card of circular arc by groove relatively, the bottom side flange, when brake block being dialled change, clamping slot can give the more contact-making surface of ratchet, surely bearing on the spot than high pulling torque, card leans on groove and resists cooperating of flange simultaneously, can make the fast turn-around blocking brake block of steel ball, promotes its practical effect.

Main purpose of the present utility model is: the brake block structural improvement that a kind of ratchet spanner is provided, the clamping slot, the card that are provided with the circular arc angle in brake block lean on groove and bottom side flange, in order to do brake block smooth and easy fast when turning to can be provided, guarantee the steady actual effect fruit of stablizing of conversion torsion.

Primary structure design of the present utility model, the wrench body ratchet of packing in inside, the ratchet increment then is arranged with a dead slot for packing a brake block into relatively, wrench body is held relative dead slot lower end to offer one in addition and is put groove simultaneously, hold the spring of steel ball with the end of packing into, wrench body grip is in opposite directions established the distance that a breach moves for commutation button horizontal, it is characterized in that: the relative ratchet of brake block, be arranged with the arc clamping slot, both sides, clamping slot top are provided with arc angle relatively, must make clamping slot cooperate arc angle, when brake block turns to, can contain 3 state at least with the contact point of ratchet, the relative steel ball in brake block bottom in addition, then be provided with arc and resist flange, resistance flange both sides are that the card of arc leans on groove, for the steel ball blocking.

Described structure improved ratchet spanner brake block, wherein arc angle fillet R is between 2.2～2.5 millimeters, and card between 4.1～4.25 millimeters, resists flange fillet R by groove fillet R between 1.75～1.77 millimeters.

For further specifying structure of the present utility model, feature and practical purpose thereof, the following drawings describe in detail as the back:

Fig. 1 is an element exploded view of the present utility model.

Fig. 2 looks section action diagram () on of the present utility model.

Fig. 3 looks section action diagram (two) on of the present utility model.

Fig. 4 is brake block of the present utility model and ratchet action partial enlarged drawing.

Fig. 5 is the last pseudosection of the general box socket set of using always.

Fig. 6 is general brake block commonly used and ratchet action partial enlarged drawing.

The utility model is structure improved ratchet spanner brake block, is mainly the improvement of brake block itself, can make turning efficiency more quick really; Please referring to Fig. 1, shown in 2, the form of the relevant wrench body 10 of ratchet spanner and steel ball 16, spring 15, ratchet 13 installation positions are all identical with general ratchet spanner commonly used, and main improvement part of the present utility model is brake block 20 relative ratchet 13 dentations, be concaved with the clamping slot 24 of circular arc, both sides, clamping slot 24 top form arc angle 25 relatively, the fillet R of its arc is about between 2.2～2.5 millimeters, relative steel ball 16 positions, brake block 20 bottoms, form the resistance flange 22 of circular arc, the radius of corner R of set flange is between 1.75～1.77 millimeters, resistance flange 22 both sides are that the card of arc wide-angle leans on groove 23, the radius of corner R of cell body is between 4.1～4.25 millimeters, for steel ball 16 blockings.

Be to insert mutually with the raised line 31 of commutation button 30 with engagement groove 21 to combine when brake block 20, and after making commutation button 30 be flat on breach 12, as Fig. 2, shown in 4, brake block 20 is stirred through commutation button 30, and it is anti-when pushing away ratchet 13 and desiring to be rotated to the clamping slot 24 of end in addition, can show as Fig. 4, brake block 20 is because of the clamping slot 24 at arc angle 25 fit circular arc angles, make the clamping slot 24 and the contact position of ratchet 13 present E, F, G 3 points, the F point is because of the cooperation of arc angle 25 simultaneously, the contact area point of itself and ratchet 13 is more vast, form arc angle 25 effectively increased area with conflict ratchet 13, the propulsive thrust of ratchet 13 is provided, jointly by clamping slot 24, arc angle 25 is born, and reaches the true small house raising of the moment of torsion effect that brake block 20 reverses ratchet 13 effectively, and the propulsive thrust of ratchet 13 is offset via arc angle 25 and clamping slot 24, and can carry out twisting action fast, and can be suitable for the enforcement situation of big stress more.

Simultaneously, card cooperates by the arc wide-angle of groove 23, obviously steel ball 16 is included in card by in the groove 23, making steel ball 16 be limited to two cards more increases by the lateral separation H of groove 23 distance D more commonly used, that is to say, steel ball 16 is equipped in card and strengthens by the stroke of groove 23, and it is obviously clear to cause its position, makes the commutation states of brake block 20 confirm easily and be difficult for obscuring; Steel ball 16 is because of resisting the arc correspondence that flange 22 meets steel ball 16 therebetween, make steel ball 16 when resisting flange 22 and slip over that the end card is by groove 23 in addition, steel ball 16 can be able to bullet cunning apace because of the cooperation of resisting flange 22, and the collocation card is by the wide-angle arc of groove 23, provide steel ball 16 bullet cunnings in moment, can slip at once, and include completely and be equipped in card by in groove 23 grooves, and give more action fast, the certain effect of positioning states.

In sum, the utility model brake block 20, corresponding with the cooperation of resistance flange 22 via arc angle 25, card by groove 23, clamping slot 24, the torsion area that is subjected to of brake block 20 is increased effectively, to offset the propulsive thrust of ratchet 13, work met with stresses the fruit that reaches better; And the card of wide-angle cooperates resistance flange 22 by groove 23, and the bullet slip velocity degree of steel ball 16 is accelerated, and the return of stroke state is clear really.

Claims (2)

1, structure improved ratchet spanner brake block, the wrench body ratchet of packing in inside, the ratchet increment then is arranged with a dead slot for packing a brake block into relatively, wrench body is held relative dead slot lower end to offer one in addition and is put groove simultaneously, hold the spring of steel ball with the end of packing into, wrench body grip is in opposite directions established the distance that a breach moves for commutation button horizontal, it is characterized in that, the relative ratchet of brake block, be arranged with the arc clamping slot, both sides, clamping slot top are provided with arc angle relatively, must make clamping slot cooperate arc angle, when brake block turns to, can contain 3 state at least with the contact point of ratchet, the relative steel ball in brake block bottom then is provided with arc and resists flange in addition, resistance flange both sides are that the card of arc leans on groove, for the steel ball blocking.

2, structure improved according to claim 1 ratchet spanner brake block is characterized in that, arc angle fillet R is between 2.2～2.5 millimeters, and card between 4.1～4.25 millimeters, resists flange fillet R by groove fillet R between 1.75～1.77 millimeters.

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