CN2067633U - Plastic-steel structure parts of monkey-spanner - Google Patents

Abstract

The utility model relates to a monkey spanner part with a plastic steel structure. A spanner body of the utility model and a spanner mouth of the utility model are made of lined steel sheets and plastic materials for wrapping the steel sheets, wherein, the plastic materials and the steel sheets at the working stress points of the spanner body and the plastic materials and the steel sheets at the working stress points of the spanner mouth are on the same contacting end face. The lined steel sheets corresponding to the shapes of the spanner body and the shape of the spanner mouth are provided with assembly holes and grooves, and the assembly holes and grooves are cast with plastics through injection, and the lower end of the spanner mouth is provided with worm wheel teeth. After matched with worm bars, the utility model can be used. The utility model has the advantages of simple manufacturing process, steel saving, and required rigidity, intensity and abrasion resistance.

Description

Plastic-steel structure parts of monkey-spanner

The utility model relates to a kind of adjustable wrench parts, particularly a kind of adjustable wrench parts that adopt the plastic-steel structure.

The present adjustable wrench of selling on the market comprises its critical piece: pulling body, pulling mouthful all is to use the steel excellent suitability for press forming, then through bore, mill, insert, mill and surface treatment can assemble use, operation is many, complex process, manufacturing cost height.

The purpose of this utility model is will pulling body, pull mouthful to substitute pulling body, pull mouth with the steel forging with the plastic-steel structure.

Task of the present utility model is finished like this: pull body, pull mouth all with the plastics formation that serves as a contrast the bone steel disc and wrap up this steel disc; The stressed place of work of wherein pulling body, pulling mouth, plastics contact on the end face same with steel disc.The shape of lining bone steel disc is corresponding with the shape of pulling body, pull mouth, have the hole of assembling worm screw and bearing pin and pull body, pull the groove that mouth is slidingly matched, make it to pull body behind the injection moulding parcel, pull hole, groove once-forming on the mouth, be processed into worm-gear toothing in the lower end of pulling mouth again, mix worm screw and can use.

The pulling body, pull mouthful with the steel-cald bone of the plastic-steel structure that the utility model provides to strengthen the rigidity of adjustable wrench, the moment of flexure during with anti-work; Pull body, pull the work stressed place plastics of mouth and steel disc can improve contact-making surface again at same contact-making surface intensity and wearability; Simplified the machining operation of pulling body, pulling mouthful of former steel forging with steel-cald bone injection molded, not only simplified technology but also saved steel, and met instructions for use.

Below in conjunction with the accompanying drawings concrete structure of the present utility model is further described with embodiment:

Fig. 1 is that the B-B of Fig. 2 analyses and observe the assembly structure figure of pulling body, pulling mouthful that reflection the utility model provides.

Fig. 2 pulls body, pulls a mouthful global facility A-A cutaway view among Fig. 1.

Fig. 3 pulls the body center section plan.

Fig. 4 is the whole C-C cutaway view that Fig. 3 pulls body.

Fig. 5 pulls a mouthful center section plan.

Fig. 6 is the whole D-D cutaway view that Fig. 5 pulls mouth.

As shown in Figure 1, pulling body 1 and pulling mouthfuls 2 worm hole and pin shaft hole of the adjustable wrench that the utility model provides pulled mouthful 2 lower ends and had worm-gear toothing.Pulling body 1 lining bone steel disc 8 has two, and is prefabricated into shape as shown in Figure 4, superimposed relatively, make its head cavity form the assembling worm screw square hole and with pull mouthful 2 grooves that are slidingly matched, through injection moulding 7 steel disc 8 is cast into wherein then.Pulling mouthfuls 2 lining bone steel discs 6 also has two and be prefabricated into as shown in Figure 6 shape, superimposed relatively, through injection moulding 5 fillings, steel disc 6 is cast into wherein, and with its lower end through being machined into worm-gear toothing.The plastics of pull body 1, pulling mouthfuls 2 work stress surface 3,4,9,10,11,12 contact on the end face same with steel disc, to guarantee the intensity and the wearability of contact-making surface.Pull mouthfuls 2 pulling to mix on the body 1, worm screw is also fixed with bearing pin, can use.

Claims (2)

1, a kind of adjustable wrench parts of plastic-steel structure are by pulling body 1, pulling mouthfuls 2 and form, it is characterized in that pulling body 1, pulling mouthfuls 2 is that the plastics 5,7 of lining bone steel disc 6,8 and parcel steel disc thereof constitute, and the plastics of pull body 1, pulling mouthfuls 2 work stress surface 3,4,9,10,11,12 contact on the end face same with steel disc.

2, adjustable wrench parts according to claim 1 is characterized in that spanner 1, pull mouthfuls 2 lining bone steel disc 6,8 and respectively have two and superimposed relatively.

Images