CN2039612U

CN2039612U - Solid arrench with click pulley function

Info

Publication number: CN2039612U
Application number: CN 88206992
Authority: CN
Inventors: 付青山; 张建军
Original assignee: VOCATIONAL SCHOOL OF ZHENGZHOU DIESEL ENGINE FACTORY
Current assignee: VOCATIONAL SCHOOL OF ZHENGZHOU DIESEL ENGINE FACTORY
Priority date: 1988-06-07
Filing date: 1988-06-07
Publication date: 1989-06-21

Abstract

The utility model discloses a solid wrench with click pulley function, comprising a wrench member, a crescent loose piece, a hinge axis and a reset spring. The utility model has the advantages of the solid wrench and the click pulley wrench, known as quick speed and safety.

Description

Solid arrench with click pulley function

The utility model belongs to hand tools wrench, wrench.It is current that the instrument of use has universal screw wrench in machinery assembling and repairing, maintenance work, stiff hand, and double off-set spanners and ratchet wrench under different situations, use different wrench, and its purposes is respectively arranged.

The CN85202636 patent is introduced the universal screw wrench with ratcher function, and it simplifies the universal screw wrench production technology to a certain extent, overcome the easily loosening defect of general universal screw wrench, but be restricted, under the particular case in the space, it can not replace stiff hand, finishes assembling or repair work; The CN85204568 patent, introduction be multifunction active wrench with ratcher function, but this wrench complex structure, production process is heavy long, production cost is higher.

Stiff hand, opening size is fixed, and the stiff hand of a kind of specification can only be tightened a kind of specifications of nuts, and this is a shortcoming, but also is its advantage simultaneously, and stiff hand and nut cooperate closely, are difficult for slippage.So in the engineering goods assembling and maintenance of standardization seriation, stiff hand is still one of instrument that often has.

The present stiff hand that uses, when fastening nut, whenever twisted certain angle after, must return wrench, block again again and twist, operating efficiency is affected like this.

If can make a kind of stiff hand with ratcher function, operating efficiency is not to improve, this purpose of the present invention just.

The technical solution of the utility model, Fig. 1 has the stiff hand structural representation of ratcher function.Existing permanent opening size, structure-integrated stiff hand becomes: by wrench body (1) and crescent loose piece (2), constitute a novel stiff hand by hinge axis (4) connection between the two.Simultaneously in wrench body (1) perpendicular in the AB plane of paper and the crescent loose piece (2) between the CD plane perpendicular to paper, the fan groove ACDB that formation can make wrench body (1) rotate, one blind hole (5) is arranged in the CD plane of crescent loose piece (2), be used to install back-moving spring (3), spring (3) other end contacts with plane AB.

Its operation principle is as follows: after Dang Bankou blocked nut, wrench body (1) rotated around hinge axis (4), compression spring (3), plane AB is contacted with plane CD, then to counter-rotation, fastening nut, spring (3) resets, and AB, CD two planar separation constitute fan groove ACDB.Repeatedly repeat said process, form stiff hand with ratcher function.

Embodiment (one), Fig. 2 and Fig. 3 be adopt that the chain slot type is connected have a stiff hand structural representation of ratcher function.Wherein have a key way in the middle of the crescent loose piece (2), wrench body (1) is sandwiched in the key way, by the two connection of hinge axis (4).Wrench body (1) can be done reciprocal rotation in key way.This is preferred embodiment, but manufacturing process is complicated.

Embodiment (two), Fig. 4 and Fig. 5 adopt that step is connected has the stiff hand structural representation of ratcher function.For simplified manufacturing technique, reduce cost, the structure of crescent loose piece (2) and wrench body (1) is all made step, connects with hinge axis (4) between the two.This structural advantages is that worker is simpler, and what be suitable for making large-size has a stiff hand of ratcher function.

Stiff hand with ratcher function, more easy to use than general stiff hand, can increase work efficiency, safe and reliable.

Claims

1, a kind of stiff hand with ratcher function, general stiff hand, its opening size is fixed, structure-integrated, feature of the present utility model is: the stiff hand with ratcher function is by wrench body (1) crescent loose piece (2), back-moving spring (3) is formed by hinge axis (4) connection between wrench body (1) and the crescent loose piece (2).

2, by the described stiff hand of claim 1, it is characterized in that: have a blind hole (5) that back-moving spring (3) can be installed in the CD plane perpendicular to paper in the crescent loose piece (2) with ratcher function.

3, by the described stiff hand of claim 1 with ratcher function, it is characterized in that: can adopt keyway formula fit structure between wrench body (1) and the crescent loose piece (2), connect by hinge axis (4), also can adopt the step fit structure, connect by hinge axis (4).