CN2360221Y

CN2360221Y - Adjustable wrench

Info

Publication number: CN2360221Y
Application number: CN 99200755
Authority: CN
Inventors: 黄秉文
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-01-22
Filing date: 1999-01-22
Publication date: 2000-01-26
Anticipated expiration: 2009-01-22

Abstract

The utility model relates to an adjustable wrench which comprises a fixed jaw, a movable jaw, a gear wheel, a clamping block, a switching button and a grab handle. One side of the fixed jaw is provided with a hole which is provided with a screw rod inside, one end of the screw rod is provided with a spring, and the other end of the spring is connected with the fixed jaw. The other side of the fixed jaw is pivoted with the gear wheel, the clamping block and the grab handle orderly, a rack bar is arranged below the movable jaw, and one section of the rack bar is engaged with the screw rod. The other section of the rack bar is engaged with the gear wheel which is arranged on the fixed jaw, so the adjustable spanner does not need to take out again to be jointed in order to rotate a screw nut continuously when the screw nut is rotated. In addition, the adjustable spanner does not be arranged inversely, and the rotation direction can be changed by switching the switching button. So the use of the utility model is more convenient, and the efficiency is higher.

Description

Monkey wrench

The utility model relates to a kind of hand-operated tools, and must heavily not cover when referring to a kind of use especially and smoke, and continuous rotary nut, and changeable switch bar changes the monkey wrench of turning effort direction.

As shown in Figure 8, be general monkey wrench, it has a fixed jaw 8 and a movable jaw 81, this fixed jaw 8 is provided with a screw rod 82, and below it, establish a lever 83, and these movable jaw 81 belows link a tooth bar 84, and this tooth bar 84 is engaged in this screw rod 82, can adjust the distance of this fixed jaw 8 and movable jaw 81, to be applicable to screwing or loosening of different big or small nuts.Use the inconvenience of this kind monkey wrench maximum to be: when monkey wrench or nut are subject to its lock and pay the position, for example nut is to be arranged in a groove, monkey wrench can't once be totally released nut or screw, and after involutory nut two opposite side change an angle, monkey wrench must be smoked, involutory two opposite side in addition rotate an angle again, so heavily cover aforementioned activities.Be at least 3 times of pitch so pay a degree of depth, outward winding or lock and must change 1080 degree above (promptly more than 3 circles), suppose can screw 60 degree at every turn, promptly need do 18 involutory actions between reciprocal with general nut lock, quite inconvenient, and influence operating efficiency.

Extremely shown in Figure 11 as Fig. 9, be another kind of monkey wrench, it has a fixed jaw 9 and a movable jaw 91, and this fixed jaw 9 is provided with a screw rod 92, a lever 93 is established in the below, these movable jaw 91 belows link a tooth bar 94 and are provided with a chute 95, and this tooth bar 94 is engaged in screw rod 92, and a slide block 96 is arranged on this chute 95, this slide block 96 is provided with a spring 97, this spring 97 is two clamping areas with movable jaw 91 and slide block 96, after spring 97 moves in chute 95 for slide block 96, and slide block 96 energy homings; In addition, with tooth bar 94 engagement screws 92, temporarily transfer whole fixed jaw 9 and come involutory nut with the distance of movable jaw 91, after nut changeed an angle, monkey wrench toward revolution, make slide block 96 because of nut to angular distance greater than opposite side distance, and pushed, this slide block 96 is outwards skidded off, stride across this diagonal angle until this slide block 96 and fixed jaw 9, and spring 97 makes slide block 96 get back to original position; Get final product application of force rotary nut again.

Though this kind monkey wrench can save involutory action repeatedly,, if need to change to when unclamping, monkey wrench must be inverted by screwing the nut action, especially be arranged in the groove cave that monkey wrench is difficult for clamping, inconvenience especially when nut; In addition, in unified operation, be the preload of control nut and bolt unanimity, often nut is screwed, unclamping 1/3rd circles does not more wait, at this moment, just just screwed nut and again monkey wrench has been inverted, involutory more once with loosen nut, quite bother, the monkey wrench that also therefore is inverted becomes the main cause that operating efficiency can't promote.

Main purpose of the present utility model is, commonly use the existing the problems referred to above of spanner for solution a kind of monkey wrench is provided, composition by fixed jaw, movable jaw, gear, clamping block, switch bar and lever, must heavily not cover when making rotary nut and smoke the involutory and continuous rotary nut of monkey wrench, the monkey wrench that need not be inverted is that changeable switch bar changes the turning effort direction, use convenient, more efficient.

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

A kind of monkey wrench comprises: a lever, a fixed jaw, a movable jaw, a screw rod, it is characterized in that a described lever leading portion is provided with one stroke groove and first, second anchor point, and this lever is articulated in this fixed jaw; A described fixed jaw one side is provided with a hole, is equipped with a screw rod in this hole, and this screw rod one end is provided with a spring, and this spring other end and this fixed jaw join; This fixed jaw articulates a gear, a clamping block and a lever in regular turn in opposite side; Described movable jaw below is provided with a tooth bar, and one section of this tooth bar is meshed with aforesaid screw rod, and the gear of this fixed jaw is located in this another section of tooth bar engagement; Be provided with a clamping block, its two ends are respectively first and second holding section, and are provided with an oblique stroke groove, and its bottom articulates with an articulated section and this fixed jaw; One switch bar, respectively there is the stroke groove and the lever stroke groove of the aforementioned clamping block of a slide rail cross-over connection at its two ends, during chimeric this first anchor point of this switch bar, forward rotate this lever one angle, borrow the binding of this lever, clamping block and switch bar, change the angle between lever and clamping block, make this clamping block first holding section prop up this gear, the backward rotation lever, then this clamping block does not prop up gear, and this gear is free to rotate; When being embedded in this second anchor point with this switch bar, this lever one angle of backward rotation, this clamping block second holding section props up this gear, forward rotates this lever, and then this clamping block does not prop up gear, and this gear is free to rotate.

The purpose of this utility model can also further realize by following technical measures.

Aforesaid monkey wrench, its switch bar is provided with a shell fragment, has a salient point on this shell fragment, with first or second anchor point of chimeric this lever of this salient point.

Aforesaid monkey wrench is provided with a spring between the salient point of its shell fragment and switch bar.

Aforesaid monkey wrench, its fixed jaw places this movable jaw, this gear, this clamping block, this lever and this switch bar therebetween with a loam cake.

Concrete structure of the present utility model is provided in detail by following examples and accompanying drawing thereof.

Fig. 1 is a combination schematic perspective view of the present utility model.

Fig. 2 is an exploded perspective schematic diagram of the present utility model.

Fig. 3 is an action schematic diagram of the present utility model (when clockwise rotating).

Fig. 4 is the action schematic diagram that the utility model movable jaw is crossed over nut.

Fig. 5 is an action schematic diagram of the present utility model (when rotating counterclockwise).

Fig. 6 is the action schematic diagram that the utility model movable jaw is crossed over nut.

Fig. 7 is a switching schematic diagram of the present utility model.

Fig. 8 is a combination schematic perspective view of commonly using monkey wrench.

Fig. 9 is another action schematic diagram of commonly using monkey wrench.

Figure 10 is the action schematic diagram that movable jaw shown in Figure 9 is crossed over nut.

Figure 11 is another action schematic diagram that movable jaw shown in Figure 9 is crossed over nut.

Seeing also Fig. 1 to Fig. 7, is the selected example structure of the utility model shown in the figure.

The utility model is a kind of monkey wrench, comprising: a fixed jaw 2, movable jaw 3, a gear 4, a clamping block 5, a switch bar 6 and a lever 7;

These fixed jaw 2 one sides are provided with a hole 21, are provided with a screw rod 22 in this hole 21, and these screw rod 22 1 ends are provided with a spring 23, and these spring 23 other ends and this fixed jaw 2 join; This fixed jaw 2 articulates a gear 4, a clamping block 5 and a lever 7 in regular turn in opposite side; And this fixed jaw 2 is contained in 2 of loam cake 24 and fixed jaws with a loam cake 24 with aforementioned components.

These movable jaw 3 belows are provided with a

tooth bar

31,31 1 sections of this tooth bars are meshed with aforementioned screw rod 22, the gear 4 of this fixed jaw 2 is located in these tooth bar 31 another section engagements, borrows rotating screw bolt 22 that this fixed jaw 2 and the distance of this movable jaw 3 are changed, to be applicable to the nut 1 of different sizes.

These clamping block 5 two ends are respectively first holding section 51 and second holding section 52, and are provided with an oblique stroke groove 53, and its bottom articulates with an articulated section 54 and this fixed jaw 2, and making this clamping block 5 is fulcrum with this articulated section 54, the swing about work.

These lever 7 leading portions are provided with first anchor point 71, second anchor point 72 and one stroke groove 73, and are articulated in this fixed jaw 2.

Respectively there are the stroke groove 53 and the lever 7 stroke grooves 73 of the above-mentioned clamping block 5 of a slide rail 61 cross-over connections at these switch bar 6 two ends, and this switch bar 6 is provided with a shell fragment 62 in 61 of this two slide rails, has a salient point 63 on this shell fragment 62, as shown in Figure 7.With this salient point 63 and lever 7 first anchor points 71 or second anchor point, 72 tablings, 6 of the salient point 63 of this shell fragment 62 and this switch bar are provided with a spring 64, make this switch bar 6 can be because of the elastic force of this shell fragment 62 with spring 64, and be displaced into 72 of first anchor point 71, second anchor points, and this spring 64 is embedded in first anchor point 71 or second anchor point 72 in order to really to make salient point 63.Borrow this switch bar 6 to switch on this first anchor point 71, second anchor point 72, these clamping block 5 pendulum angles are changed, and this first holding section 51 and lever 7, this second holding section 52 are fixed with the spacing of lever 7.

Shown in Fig. 3,4, fixed jaw 2 and movable jaw 3 are adjusted distance with screw rod 22, can make this fixed jaw 2 and these movable jaw 3 fixed distance, and two opposite side of clamping nut 1 switch on first anchor point 71 to above-mentioned switch bar 6.Rotate this lever 7, borrow the connection relationship of this lever 7, clamping block 5 and switch bar 6, change the angle of 5 of lever 7 and clamping blocks, make first holding section 51 prop up this gear 4, rotate this nut in a clockwise direction; After waiting to change an angle, this lever 7 can be return counterclockwise, then the angle of 5 of this lever 7 and clamping blocks changes, and gear 4 can be left in first holding section 51, and these nut two diagonal angles back down movable jaw 3, and this movable jaw 3 is together with tooth bar 31, screw rod 22 these springs 23 of extruding.Because of this gear 4 is not subjected to the restriction of first holding section 51, it is free to rotate to stride across the diagonal angle until this fixed jaw 2 and movable jaw 3, and this spring 23 clockwise rotates this lever 7 again with screw rod 22 pushed home, make this first holding section 51 can prop up gear 4 again, and rotatable this nut 1.So repetitiousness action can be saved this fixed jaw 2 and more than 3 involutory inconvenience of this movable jaw, and be raised the efficiency.

Otherwise, as Fig. 5,6, desire to be rotated counterclockwise nut 1, only need this switch bar 6 is switched to this second anchor point 72, make second holding section 52 prop up gear 4, borrow this fixed jaw 2 and these movable jaw 3 clamping nuts 1 two opposite side with rotary nut 1, after changeing an angle, lever 7 can be clockwise rotated, make this movable jaw 3 be backed down by nut 1 two diagonal angles, this movable jaw 3 is together with tooth bar 31, these springs 23 of screw rod 22 extruding, because of this gear 4 is not subjected to the restriction of second holding section 52, it is free to rotate to stride across this diagonal angle until this fixed jaw 2 with movable jaw 3, this spring 23 is with these screw rod 22 pushed home, rotate counterclockwise this lever 7 this moment again, makes this second holding section 52 prop up this gear 4 again, and rotate counterclockwise nut.So, change that the utility model screws or the action of the nut 1 that gets loose, need only switch switch bar, then screw or the nut 1 that gets loose gets final product.

In sum, the utility model disposes fixed jaw 2, movable jaw 3, gear 4, clamping block 5, switch bar 6 and lever 7 dexterously, improve the shortcoming of commonly using monkey wrench, reduce the number of times of involutory nut 1, and the action direction that screws and get loose changes easily, increases convenience that uses and the efficient that improves work.

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. monkey wrench comprises: a lever, a fixed jaw, a movable jaw, a screw rod, it is characterized in that,

A described lever leading portion is provided with one stroke groove and first, second anchor point, and this lever is articulated in this fixed jaw;

A described fixed jaw one side is provided with a hole, is equipped with a screw rod in this hole, and this screw rod one end is provided with a spring, and this spring other end and this fixed jaw join; This fixed jaw articulates a gear, a clamping block and a lever in regular turn in opposite side;

Described movable jaw below is provided with a tooth bar, and one section of this tooth bar is meshed with aforesaid screw rod, and the gear of this fixed jaw is located in this another section of tooth bar engagement;

Be provided with a clamping block, its two ends are respectively first and second holding section, and are provided with an oblique stroke groove, and its bottom articulates with an articulated section and this fixed jaw;

One switch bar, respectively there is the stroke groove and the lever stroke groove of the aforementioned clamping block of a slide rail cross-over connection at its two ends, during chimeric this first anchor point of this switch bar, forward rotate this lever one angle, borrow the binding of this lever, clamping block and switch bar, change the angle between lever and clamping block, make this clamping block first holding section prop up this gear, the backward rotation lever, then this clamping block does not prop up gear, and this gear is free to rotate; When being embedded in this second anchor point with this switch bar, this lever one angle of backward rotation, this clamping block second holding section props up this gear, forward rotates this lever, and then this clamping block does not prop up gear, and this gear is free to rotate.

2. monkey wrench according to claim 1 is characterized in that this switch bar is provided with a shell fragment, has a salient point on this shell fragment, with first or second anchor point of chimeric this lever of this salient point.

3. monkey wrench according to claim 2 is characterized in that, is provided with a spring between the salient point of this shell fragment and switch bar.

4. monkey wrench according to claim 1 is characterized in that, this fixed jaw places this movable jaw, this gear, this clamping block, this lever and this switch bar therebetween with a loam cake.