CN201231463Y

CN201231463Y - Ratchet double offset ring spanner

Info

Publication number: CN201231463Y
Application number: CNU2008200411920U
Authority: CN
Inventors: 翁恒建; 邹家平
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-07-25
Filing date: 2008-07-25
Publication date: 2009-05-06
Anticipated expiration: 2018-07-25

Abstract

Disclosed is a ratchet ring spanner, relating to ring spanner field. The body and the head of the spanner are connected through a dense ratchet mechanism, so the spanner can work with load and can return without load in a narrow space. The spanner comprises a spanner body, a spanner head sleeve arranged at two ends of the spanner body, and a spanner head. A locating groove matching with a nut is arranged in an inner hole of the spanner head; ratchets are arranged at the outer margin of the spanner head, resulting in that the outer margin of the spanner head takes the shape of a ratchet wheel; and an arc groove is arranged on the side wall of the spanner head sleeve, facing a spanner rod on the spanner body. The ratchet ring spanner is also provided with a unidirectional ratchet mechanism which comprises a pawl arranged inside the arc groove and a torsion spring. The pawl take the shape of a trapezia and a ratchet groove meshing with the ratchets at the outer margin of the spanner head is arranged on the underside of the trapezoid pawl. The torsion spring is arranged in the clearance of the arc groove and spring pins at two ends of the torsion spring are respectively connected with the arc surface of the arc groove and the side central surface of the trapezoid pawl. The ratchet ring spanner can be used in a narrow room (can be used in a space with 5 degrees). The ratchet ring spanner is small and compact in volume, simple in manufacturing technique and large in operation torque.

Description

Double offset ring spanner with ratchet

Technical field

The utility model relates to the double offset ring spanner technical field, relates in particular to a kind of click formula double offset ring spanner.

Background technology

At present the double offset ring spanner that uses must withdraw from spanner behind forward work certain angle from bolt, return certain angle after, inserting bolt works on again, inefficiency.In addition, but the usage space of double offset ring spanner is 30 °, as at narrower and small working space, just can't use.

Technical scheme

The utility model provides a kind of body of will pulling to utilize intensive ratchet and pawl arrangement to be connected with spanner at the problems referred to above, thereby also can loaded work piece in small space, the double offset ring spanner with ratchet of unloaded backhaul.

The technical solution of the utility model is: comprise and pull body, be located at spanner cover, the spanner of pulling the body two ends, the spanner endoporus is provided with the locating slot adaptive with nut, the spanner outer ring is provided with ratchet, make the spanner outer ring form ratchet-like, the direction of trigger piece is provided with a deep-slotted chip breaker on the body towards pulling on the sidewall of spanner cover, it also is provided with one-way ratchet, and the single direction ratchet detent mechanism comprises ratchet and the torsion spring that is arranged in the described deep-slotted chip breaker; Ratchet is trapezoidal shape, and the bottom surface of trapezoidal shape ratchet is provided with the teeth groove with the ratchet engagement of spanner outer ring; Torsion spring is arranged in the deep-slotted chip breaker space, and the spring pin at the two ends of torsion spring connects the side central plane of deep-slotted chip breaker arcwall face and trapezoidal shape ratchet respectively.

72 ratchets are established in the spanner outer ring of described ratchet-like.

The bottom surface of described trapezoidal shape ratchet is provided with 8～12 teeth groove.

The described torsion spring of pulling in the body deep-slotted chip breaker that places, the spring pin at its two ends is respectively equipped with elbow, and the height of two elbows is adaptive with the height of deep-slotted chip breaker curved wall, ratchet respectively.

The utility model in spanner excircle partial design 72 teeth, pull the body forward stressed after, cooperate by ratchet and spanner, spanner rotates with pulling body, reaches the purpose of forward work.Oppositely stressed when pulling body, ratchet will separate with spanner, pull the body reversed turning thereby make, and spanner is motionless, reach the rotating function of spanner.The effect of its torsion spring is that ratchet is contacted with spanner with pulling body all the time, when pulling the body forward when stressed, spanner, ratchet, pull physical efficiency and in time cooperate, when pulling body oppositely behind the stressed elastic force greater than reed, ratchet smoothly with pull body, spanner separates.The utility model has designed 72 teeth at the spanner cylindrical, makes spanner revolution minimum angles can reach 5 °.Like this, make spanner can still can work at narrow and small working space (but usage space is 5 °).

The utility model structure is compared with the existing ratchet drive wrench structure of using, and the compact conformation volume is little, and the spanner number of teeth many (this structure has 72 teeth, traditional structure≤36 tooth) makes usage space improve greatly; , ratchet and spanner have adopted 8～9 teeth to cooperate (traditional structure only has a tooth to cooperate), the operation torque and the service life of having improved spanner greatly; In addition, the utility model has been simplified the production technology of spanner.

Description of drawings

Fig. 1 is the decomposing schematic representation of the utility model structure

1 is to pull body among the figure, the 2nd, and ratchet, the 3rd, torsion spring, the 4th, spanner, the 5th, cover plate, the 6th, collar.;

Fig. 2 is the structural representation of the utility model confined state

Fig. 3 is a structural representation of the present utility model

7 is deep-slotted chip breakers among the figure;

Solid arrow is an operative orientation among the figure, and dotted arrow is a gyratory directions.

Fig. 4 is the structural representation of another embodiment of the utility model

31 is reeds among the figure.

The specific embodiment

As shown in Figure 1, 2, 3, the utility model comprises to be pulled body 1, is located at spanner cover, the spanner 4 of pulling body 1 two ends, spanner 4 endoporus are provided with the locating slot adaptive with nut, spanner 4 outer rings are provided with ratchet, make spanner 4 outer rings form ratchet-like, be provided with a deep-slotted chip breaker 7 towards the direction of pulling trigger piece on the body 1 on the sidewall of spanner 4 covers, it also is provided with one-way ratchet, and the single direction ratchet detent mechanism comprises ratchet 2 and the torsion spring 3 that is arranged in the described deep-slotted chip breaker 7; Ratchet 2 is trapezoidal shape, and the bottom surface of trapezoidal shape ratchet 2 is provided with the teeth groove with the ratchet engagement of spanner 4 outer rings; Torsion spring 3 is arranged in the space of deep-slotted chip breaker 7, and the spring pin at the two ends of torsion spring 3 connects the side central plane of deep-slotted chip breaker 7 arcwall faces and trapezoidal shape ratchet 2 respectively.

72 ratchets are established in spanner 4 outer rings of ratchet-like.

The bottom surface of trapezoidal shape ratchet 2 is provided with 8～12 teeth groove.

Place the torsion spring of pulling in body 1 deep-slotted chip breaker 73, the spring pin at its two ends is respectively equipped with elbow, and the height of two elbows is adaptive with the height of deep-slotted chip breaker 7 curved walls, ratchet 2 respectively.

Assemble double offset ring spanner with ratchet of the present utility model, as shown in Figure 1, 2, at first spanner 4 is inserted in the spanner cover of pulling body 1, and then ratchet 2, torsion spring 3 are inserted in the deep-slotted chip breaker 7 successively, cover cover plate 5 again, fixing with collar 6 at last.

Another embodiment of the present utility model as shown in Figure 4, torsion spring 3 wherein can substitute with reed 31.But the result of use of torsion spring 3 is better, even occur knocking in practicality, because torsion spring 3 has elbow, is not easy dislocation in deep-slotted chip breaker 7, and makes ratchet and pawl arrangement malfunctioning.

Claims

1, double offset ring spanner with ratchet, comprise and pull body, be located at spanner cover, the spanner of pulling the body two ends, the spanner endoporus is provided with the locating slot adaptive with nut, the spanner outer ring is provided with ratchet, make the spanner outer ring form ratchet-like, the direction of trigger piece is provided with a deep-slotted chip breaker on the body towards pulling on the sidewall of spanner cover, it is characterized in that, it also is provided with one-way ratchet, and the single direction ratchet detent mechanism comprises ratchet and the torsion spring that is arranged in the described deep-slotted chip breaker; Ratchet is trapezoidal shape, and the bottom surface of trapezoidal shape ratchet is provided with the teeth groove with the ratchet engagement of spanner outer ring; Torsion spring is arranged in the deep-slotted chip breaker space, and the spring pin at the two ends of torsion spring connects the side central plane of deep-slotted chip breaker arcwall face and trapezoidal shape ratchet respectively.

2, double offset ring spanner with ratchet according to claim 1 is characterized in that, 72 ratchets are established in the spanner outer ring of described ratchet-like.

3, double offset ring spanner with ratchet according to claim 1 is characterized in that, the bottom surface of described trapezoidal shape ratchet is provided with 8～12 teeth groove.

4, double offset ring spanner with ratchet according to claim 1 is characterized in that, the described torsion spring of pulling in the body deep-slotted chip breaker that places, and the spring pin at its two ends is respectively equipped with elbow, and the height of two elbows is adaptive with the height of deep-slotted chip breaker curved wall, ratchet respectively.