CN2279989Y

CN2279989Y - Jaw protection structure of adjustable spanner

Info

Publication number: CN2279989Y
Application number: CN 96230660
Authority: CN
Inventors: 吴传福
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-09-09
Filing date: 1996-09-09
Publication date: 1998-04-29
Anticipated expiration: 2006-09-09

Abstract

The utility model relates to a clamping jaw protecting structure for an adjustable spanner, belonging to a spanner. The inner end of the fixing jaw clamp of the clamping jaw of the adjustable spanner is provided with an arc-shaped notch. The clamping surface of an adjustable jaw clamp is provided with a plurality of arc-shaped notches which are sized down from an outer part to an inner part. Through the arc-shaped notches, when the utility model is used for clamping a hexagonal screw cap for locking and disassembly, the two force applying butting angles of the hexagonal screw cap can be just arranged in the notch of the fixing jaw clamp and the notches of the movable jaw clamp, and the contact points of the two force applying butting angles move to the plane of the side edge of the screw cap. The utility model can prevent the cap angles of the screw cap from being worn, can prevent a phenomenon of slip, and can provide stable operation for the locking and the disassembly.

Description

The folder mouth safeguard structure of monkey wrench

The utility model relates to spanner, particularly a kind of folder mouth safeguard structure of monkey wrench.

The monkey wrench of now knowing, see also shown in Figure 5, on its structural design, mainly be to be body with a lever 10 with head 11, extend to form fixedly Jaw handle 12 in head 11 1 sides, in addition side is then adjusted 14 of screw rods with one and is established a movable Jaw folder 13, utilize this adjustments screw rod 14 pull out then drive Jaw folder 13 and lean on or separation to fixing Jaw folder 12 folders, obtain the fixedly adjustment of the clamp distance of 13 liang of clamping faces of Jaw folder 12 and movable Jaw folder according to this, be applicable to that according to this nut lock of different size unloads operation.

Only, with regard to monkey wrench with regard to the lock of nut unloads in the operation, see also Fig. 6, shown in 7, though this monkey wrench system is with the wherein two sides formation clamping to nut 20 of two clamping faces of fixedly Jaw folder 12 and movable Jaw folder 13, but because of nut 20 and monkey wrench two Jaw folder 12, also can't reach effect definitely closely on 13 the clamping kenel, be and when locking the operation of unloading, owing to all be that the mode that adopts fixing Jaw folder 12 to support for the switching medial roof for the movable Jaw folder 13 of the switching outside point of application imposes to lock to nut 20 and unloads strength, cause nut 20 in fact only to press from both sides 12 inner ends by fixing Jaw and to press from both sides two cap angles 21 of 13 outer ends by movable Jaw, 22 and two clamping faces 15,16 form the point-like contact, stress concentration phenomenon when causing its application of force, therefore through being easy to cause the wearing and tearing of this position structure after repeatedly lock unloads, make it that slip phenomenon very easily take place when lock unloads, have a strong impact on its lock and unload the stable and smooth and easy of operation.

And for providing hexagonal (hexagon)nut when lock unloads, can obtain the stable holding of monkey wrench two clamping faces, it is the steadiness that has the dealer to attempt to promote its clamping in the mode that adds the grip rib line at the monkey wrench clamping face, so in fact, the cap angle two point-contact type attitudes of the setting of these grip rib lines when release lock does not unload yet, not only fail to obtain firm lock and unload operation, because of the rib line quickens its wear phenomenon to the friction at cap angle, difficulty is called good improvement design on the contrary.

In view of this, the purpose of this utility model, be not count a kind of folder mouth safeguard structure of monkey wrench, for overcoming monkey wrench two Jaw folder nut clamping application of force institute is easily caused point-like contact and the concentrated phenomenon of stress, make its point of application no longer be limited to the cap angular position, change the time contact for the face contact, to improve the slippage problem that its wearing and tearing may cause.

For achieving the above object, the utility model is achieved in that

The utility model utilizes monkey wrench, and fixedly the default arc breach of the default arc breach of Jaw folder close end and movable Jaw folder clamping face is ccontaining for two application of force contact angles of hexagonal (hexagon)nut, and then the application of force contact point that makes monkey wrench and hexagonal (hexagon)nut is transferred to the side plane of nut, using the cap angular position that can avoid hexagonal (hexagon)nut is worn and torn, slip phenomenon in the time of can preventing the application of force provides comparatively stable lock to unload operation.Arc breach at fixing Jaw folder close end is into suitable size, and movable Jaw clamping face is to do several arc breach designs, the nut clamping that adapts to different size is locked when unloading, and the application of force contact angle of nut still can be placed in the arc breach really, reaches pre-anti-wear safeguard function.The size that makes severals arc breach of movable Jaw folder clamping face make ecto-entad again is listed as, ccontaining with the application of force contact angle that adapts to different big or small nuts.

The utility model can also be further specified from the following drawings and embodiment:

Fig. 1 is the utility model monkey wrench structural representation.

Fig. 2 is that the utility model monkey wrench carries out big specification nut lock structural relation schematic diagram when unloading.

Fig. 3 is the utility model monkey wrench structural relation schematic diagram when carrying out unloading than small dimension nut lock.

Fig. 4 is another enforcement schematic diagram of the utility model monkey wrench safeguard structure.

Fig. 5 now knows the monkey wrench structural representation.

Fig. 6 now knows the structural relation schematic diagram of monkey wrench when enforcement nut lock is established.

Fig. 7 now knows the structural relation schematic diagram of monkey wrench when implementing the nut dismounting.

The drawing explanation:

10,30-lever, 11,31-head, 12,32-fixedly Jaw folder, 13,33-movable Jaw folder, 14,34-adjust screw rod, 15,16,35,36-clamping face, 20,40-nut, 21,22-cap angle, 41,42-application of force contact angle.

Below by accompanying drawing embodiment of the present utility model is described in detail:

At first, see also shown in Figure 1, the utility model is the folder mouth safeguard structure of monkey wrench, being still with a lever 30 with head 31 is body, extend to form fixedly Jaw folder 32 in head 31 1 sides, side is then adjusted 34 of screw rods with one and is established a movable Jaw folder 33 in addition, utilize this adjustment screw rod 34 pull out then drive activity Jaw folder 33 to fixing Jaw folder 32 folders by or separation, obtain the fixedly adjustment of the clamp distance of 33 liang of clamping faces of Jaw folder 32 and movable Jaw folder according to this, the nut lock that is applicable to different size according to this unloads operation, and in the design of its safeguard structure, mainly be to be provided with a suitably big or small arc breach 35 in the fixedly Jaw folder 32 nearly inner end positions of monkey wrench folder mouth, and also be provided with several arc breach 36 in the clamping face of its movable Jaw folder 33, utilize these

breach

35,36 design, it is locked when unloading operation at the clamping hexagonal (hexagon)nut, hexagonal (hexagon)nut wherein two application of force items supports the angle and just can be placed in fixing Jaw and press from both sides in the arc breach 35 of 32 inner ends and the wherein arc breach 36 that movable Jaw presss from both sides 33 clamping faces, and then the application of force contact point that makes monkey wrench and hexagonal (hexagon)nut is transferred to the side plane of nut, the contact of changing the time is plane contact, using the cap angular position that can avoid hexagonal (hexagon)nut is worn and torn, slip phenomenon in the time of can preventing spin provides comparatively stable lock to unload operation.

See also Fig. 2, shown in 3, with monkey wrench when the lock that carries out hexagonal (hexagon)nut unloads, when fixedly 33 pairs of nuts of Jaw folder 32 and movable Jaw folder 40 form parallel sandwich, the application of force contact angle 41 that this nut 40 presss from both sides 32 inner ends by fixing Jaw just can be corresponding to fixing arc breach 35 positions of Jaw folder 32, the application of force contact angle 42 that presss from both sides 33 outer ends by movable Jaw is then corresponding to a wherein arc breach 36 positions of movable Jaw portion 33, carry out its lock at the switching lever according to this and unload when operation, two application of force contact angles 41 of this

nut

40,42 can't contact with the clamping face of fixing Jaw folder 32 and movable Jaw folder 33, but make its contact site be transferred to two side planes and the arc breach 35 of nut, 36 interface place, edge, therefore unload aspect the application of force at lock, just can be to two application of force contact angles 41 of

nut

40,42 form the stress effects and produce wear phenomenon, and because its application of force contact point ties up to nut 40 side planes and can obtain more firm application of force state, can avoid locking the slippage problem when unloading in view of the above, provide preferable nut lock to unload operation.

And still do several design because of the arc breach 36 of movable Jaw folder 33 of the present utility model, and fixedly Jaw folder 32 is suitable size with the

arc breach

35,36 of movable Jaw folder 33, therefore nut 40 locks that go for the different size size unload operation, can further do the modification of arc lead angle simultaneously in the interface place of this

arc breach

35,36 and clamping face, use and make in its clamping contact nut 40, can prevent that sharp keen corner from forming the friction cutting to nut 40 surfaces, and can reduce the stress effect, make it more meet practical value.

Other sees also shown in Figure 4, the folder mouth safeguard structure of monkey wrench of the present utility model, nut 40 locks at the different size size unload operation, the special design of its movable Jaw folder 33 being made several arc breach 36, make its no matter nut 40 specification sizes, except the application of force contact angle 41 that presss from both sides 32 inner ends by fixing Jaw just can arc breach 35 positions corresponding to fixing Jaw folder 32, its application of force contact angle 42 of leaning on movable Jaw to press from both sides 33 outer ends can press from both sides 33 a wherein arc breach 36 positions at least corresponding to movable Jaw, and then reach the function of pre-anti-wear slippage, and based on the variation of the specification size of nut 40, can be further arc breach 36 ecto-entads of movable Jaw folder 33 be done big minispread ccontaining so as to the application of force contact angle 42 that is suitable for different big or small nuts 40, become another embodiment of the utility model.

Claims

1. the folder mouth safeguard structure of a monkey wrench, comprise and have head the lever (30) of (31) is a body, extend to form fixed jaw (32) in head (31) one sides, side is then adjusted screw rod (34) axle with one and is established a movable jaw (33) in addition, it is characterized in that: be provided with arc breach (35) in the nearly the inner of the fixed jaw (32) of monkey wrench mouth, and be provided with arc breach (36) in the clamping face of movable jaw (33).

2. the folder mouth safeguard structure of monkey wrench according to claim 1 is characterized in that: can make the arc lead angle at fixed jaw (32) and the arc breach (35,36) of movable jaw (33) and the interface place of clamping face.

3. the folder mouth safeguard structure of monkey wrench according to claim 1, it is characterized in that: several arc breach (36) of movable jaw (33) clamping face, ecto-entad is done big minispread.