CN2574845Y

CN2574845Y - Bull dog wrench

Info

Publication number: CN2574845Y
Application number: CN 02258116
Authority: CN
Inventors: 仇德明
Original assignee: YANGZHOU PIPELINE IMPLEMENT FACTORY
Current assignee: YANGZHOU PIPELINE IMPLEMENT FACTORY
Priority date: 2002-10-29
Filing date: 2002-10-29
Publication date: 2003-09-24
Anticipated expiration: 2012-10-29

Abstract

The utility model relates to a tube spanner, which belongs to the technical field of a hardware tool. The spanner comprises a movable jaw, a clamp handle body, and a fixed jaw fixed on the clamp handle body. The utility model also comprises a pull rod, a compressed spring, and a kick crank. The back part of the movable jaw is hinged with the fixed jaw. An olecranon-shaped jaw with teeth at the inner edge is formed. The middle back part of the movable jaw is hinged with one end of the pull rod. The other end of the pull rod is inserted inside the clamp handle body, and is hinged with one end of the kick crank and the compressed spring. The other end of the compressed spring is fixed inside the clamp handle body. The kick crank is engaged with the clamp handle body through a sliding mechanism. When the utility model is used, the pull rod can press the compressed spring so long as the kick crank is moved backwards to cause the movable jaw to open. After a tube is clamped inside the olecranon-shaped jaw formed by the movable jaw and the fixed jaw, the lock crank is loosed. The compressed spring automatically causes the movable jaw to generate a closed trend when the compressed spring is reset, and thereby, the tube can be clamped. The utility model has the advantages of artful design, simple structure, easy use, and no slippage. After presented in a prediction mode, the utility model has a good market prospect.

Description

The self-regulated bulldog wrench

Technical field

The utility model relates to a kind of bulldog wrench, and the especially a kind of bulldog wrench that can regulate the jaw opening degree belongs to the hardware ﹠ tools technical field.

Background technology

Bulldog wrench claims pipe vice again, is the hardware ﹠ tools of using always.Existing bulldog wrench mainly is made up of moving jaw 1, pincers handle body 2, regular jaw 3, adjusting nut 4, flat spring 5, rivet 6 as shown in Figure 1.During use,, can make moving jaw 1 elastic, thereby regulate the opening degree between moving jaw 1 and the regular jaw 3, so that adapt to the pipe vice calorie requirement of different-diameter D by screwing adjusting nut 4.The problem that this prior art bulldog wrench exists is to regulate inadequately to make things convenient for, and slippage easily, and is especially all the more so in the use occasion that caliber changes greatly.

Summary of the invention

The purpose of this utility model is: at the problem that prior art exists, proposes a kind of can conveniently regulate and clamp block reliable self-regulated bulldog wrench.

In order to reach above purpose, self-regulated bulldog wrench of the present utility model comprises moving jaw, pincers handle body and is fixed on the regular jaw that clamps on the handle body, also comprise pull bar, stage clip and snap close, the rear portion and the regular jaw of moving jaw are hinged, form the toothed olecranon shape of inner edge jaw, the postmedian of moving jaw and pull bar one end are hinged, the other end of pull bar inserts in the pincers handle body, and with an end pin joint of snap close and stage clip, the other end of stage clip is fixed in the pincers handle body, and snap close is connected with pincers handle body by slipping mechanism.

During use, move snap close after needing only, pull bar gets final product compression press spring, moving jaw is opened, after pipe clip is in the olecranon shape jaw of moving jaw and regular jaw formation, unclamp snap close, automatically make moving jaw produce closed trend when stage clip resets, thereby pipe is tightened.

Obviously, the utility model ingenious conception, simple in structure, made things convenient for manyly by the mode of screwing adjusting than prior art, and olecranoid jaw pincers card is reliable, can slippage.After estimating to release, will be subjected to people's popular welcome, have good market prospects.

Description of drawings

Below in conjunction with accompanying drawing the utility model is further described.

Fig. 1 is the structural representation of existing bulldog wrench.

Fig. 2 is the structural representation of the utility model embodiment one.

Fig. 3 is the structural representation of the utility model embodiment two.

The specific embodiment

Embodiment one

The self-regulated bulldog wrench of present embodiment mainly is made up of moving jaw 4, pincers handle body 2, regular jaw 3, pull bar 7, stage clip 11 and snap close 6 as shown in Figure 2.The front end of moving jaw 4 is shaped on toothed barb round end, and its rear portion and regular jaw 3 are hinged by bearing pin 13, forms the toothed olecranon shape of inner edge jaw.The postmedian of moving jaw 4 is hinged with the front end of pull bar 7 by pin 15.Insert in the pincers handle body 2 rear end of pull bar 7, and with the front end pin joint of snap close 6 and stage clip 11.The rear end of stage clip 11 is fixed in the pincers handle body 2, and snap close 6 is sleeved on outside the pincers handle body 2, forms moving sets with pincers handle body 2.Pincers handle body 2 rear ends stud with is convenient to grip flexible taper knob 10.

During use, suitably mobile backward as required snap close 6, pull bar 7 is promptly affected compression press spring 11, and moving jaw 4 is opened.After pipe clip is in the olecranon shape jaw that moving jaw 4 and regular jaw 3 form, unclamp snap close 6, stage clip 11 automatically resets, make moving jaw 4 produce closed trend, the latch acting in conjunction of its toothed barb round end and inner edge is firmly blocked pipe, pulls taper knob 10 then, pipe is rotated as required, till screwing.

Experiment showed, that present embodiment does not need artificial adjusting, card is turned round reliable, and it is handy, very convenient to use.

Embodiment two

The self-regulated bulldog wrench of present embodiment as shown in Figure 3, its basic structure is identical with embodiment one, difference is: uncinus shows discrete cycle dentation in the regular jaw, is applicable to the extraordinary pipe vice card of the outer rib of band.

In addition to the implementation, the utility model can also have other embodiments.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop in the protection domain of the utility model requirement.

Claims

1. self-regulated bulldog wrench, comprise moving jaw, pincers handle body and be fixed on the regular jaw that clamps on the handle body, it is characterized in that: also comprise pull bar, stage clip and snap close, the rear portion and the regular jaw of moving jaw are hinged, form the toothed olecranon shape of inner edge jaw, and the postmedian of moving jaw and pull bar one end are hinged, the other end of pull bar inserts in the pincers handle body, and with an end pin joint of snap close and stage clip, the other end of stage clip is fixed in the pincers handle body, snap close by slipping mechanism with clamp the handle body and be connected.

2. according to the described self-regulated bulldog wrench of claim 1, it is characterized in that: the front end of described moving jaw is shaped on toothed barb round end.

3. according to the described self-regulated bulldog wrench of claim 1, it is characterized in that: uncinus shows discrete cycle dentation in the described regular jaw.

4. according to claim 2 or 3 described self-regulated bulldog wrenches, it is characterized in that: it is external that described snap close is sleeved on the pincers handle, forms moving sets with pincers handle body.