CN205614559U

CN205614559U - Ratchet wrench

Info

Publication number: CN205614559U
Application number: CN201620447494.2U
Authority: CN
Inventors: 刘少江; 阮炯
Original assignee: Individual
Current assignee: Individual
Priority date: 2016-05-16
Filing date: 2016-05-16
Publication date: 2016-10-05
Anticipated expiration: 2026-05-16

Abstract

The utility model provides a ratchet wrench, include wrench end subassembly, clog, a plurality of stop pin and handle, wrench end subassembly, clog concentric shaft set up, the clog cover is on the wrench end subassembly, clog circumference equipartition locking groove is just with the stop pin one -to -one, the stop pin sets up at the locking inslot, the head of handle has the cavity, the clog sets up in the cavity, the cavity is less than the circumscribed circle of stop pin to the centre of a circle minimum distance of wrench end subassembly, and the cavity is greater than the circumscribed circle of stop pin to the longest distance in the wrench end subassembly centre of a circle. Its advantage lies in that the resistance of receiving to not equidirectional rotation through the stop pin is different to making the ratchet wrench can only unidirectional rotation, not adopting the elastic component to realize that the single file is rotatory, processing be simple and convenient with the assembly, long service life.

Description

Ratchet spanner

Technical field

This utility model relates to a kind of spanner, particularly to a kind of ratchet spanner.

Background technology

Spanner is a kind of conventional installation and extracting tool.Utilize lever principle twist bolt, screw, Nut and other screw threads tightly hold bolt or the opening of nut or the hand tools of trepanning firmware.Particularly Ratchet spanner can adjust spanner easily and use angle, and the degree of tightness for screw operates, and has suitable Strong by property, feature easy to use.

Ratchet spanner the most all uses elastic component to block the direction of rotation of ratchet spanner side, thus rises Effective to single direction rotation.It is well known that, elastic component has fatigue strength, and life-time service can make Elastic component lost efficacy, and caused cannot normally working by ratchet spanner.And rely on elastic component to work Ratchet spanner processing and assembly technology are loaded down with trivial details, and product cost is the lowest.

Utility model content

A kind of ratchet spanner of offer of the present utility model, does not use elastic component to realize single file and rotates, Processing and assembling simplicity, service life is long, to overcome the defect of above-mentioned prior art, improves and uses Safety.

This utility model provides a kind of ratchet spanner, including, driving end assembly, retainer, some Individual latch and handle；Driving end assembly, retainer are coaxially disposed；Retainer is enclosed within driving end group On part；Retainer circumference uniform distribution locking groove, and with latch one_to_one corresponding；Latch is only arranged on In dynamic groove；The head of handle has cavity；Retainer is arranged in cavity；The circumference patch of latch Close driving end assembly and cavity；Cavity is less than latch to the center of circle beeline of driving end assembly Circumscribed circle, the longest distance of cavity to the driving end assembly center of circle is more than the circumscribed circle of latch.

Further, this utility model provides a kind of ratchet spanner, it is also possible to have a feature in that Cavity has the reflex angle identical with latch quantity, and reflex angle circumference uniform distribution.

Further, this utility model provides a kind of ratchet spanner, it is also possible to have a feature in that The cross section of retainer is annulus；It is connected on the cylindrical of retainer in reflex angle.

Further, this utility model provides a kind of ratchet spanner, it is also possible to have a feature in that Cavity is regular polygon, and polygonal limit number is the twice of latch quantity, polygon adjacent two Individual interior angle is outer respectively to be connected on two concentric circulars.

Further, this utility model provides a kind of ratchet spanner, it is also possible to have a feature in that Cavity is quincunx.

Further, this utility model provides a kind of ratchet spanner, it is also possible to have a feature in that Driving end assembly includes rotary shaft and driving end；Driving end is fixing on the rotary shaft；Rotary shaft can be Rotate in cavity.

Further, this utility model provides a kind of ratchet spanner, it is also possible to have a feature in that Driving end assembly also includes spring, and set is on the rotary shaft.

Further, this utility model provides a kind of ratchet spanner, it is also possible to have a feature in that Also include lanyard；Also include the first cover plate and the second cover plate；First cover plate is spacing fixing by step An end face at cavity；Second cover plate is fixed on another end face of cavity by jump ring.

Further, this utility model provides a kind of ratchet spanner, it is also possible to have a feature in that Also include transducer, rotatable be fixed on handle；Wherein, transducer has conversion boss；Only Dynamic utensil has conversion groove；Conversion boss embeds conversion groove；Rotation converter, drives retainer to rotate.

This utility model provides a kind of ratchet spanner, is received to different directions rotation by latch Resistance is different so that ratchet spanner can only single direction rotation, do not use elastic component to realize single file rotation Turning, process and assemble simplicity, service life is long.

Accompanying drawing explanation

Fig. 1 is the front perspective view of ratchet spanner.

Fig. 2 is the rear perspective view of ratchet spanner.

Fig. 3 is the front exploded view of ratchet spanner.

Fig. 4 is the rear exploded view of ratchet spanner.

Fig. 5 is the head enlarged drawing that the second cover plate removed by ratchet spanner.

Fig. 6 is ratchet spanner rotation status counterclockwise figure.

Fig. 7 is that ratchet spanner turns clockwise state diagram.

Fig. 8 is the schematic diagram of varying number latch.

Detailed description of the invention

With specific embodiment, this utility model is further described below in conjunction with the accompanying drawings.

Ratchet spanner includes: driving end assembly 100, retainer 200,9 latch 300, handss Handle the 400, first cover plate the 500, second cover plate 600 and transducer 700.

As shown in Figure 3 and Figure 4, driving end assembly 100 includes: driving end 110, rotary shaft 120 With spring 130.Driving end 110 is fixed in rotary shaft 120 by steel ball, with rotary shaft 120 Rotate.Spring 130 is enclosed within rotary shaft 120.

The cross section of retainer 200 is annulus, is enclosed within driving end 110.Retainer circumference uniform distribution 9 locking grooves 210, and with latch 300 one_to_one corresponding.Latch 300 is arranged on locking groove In 210.As shown in Figure 4, the rear end of retainer 200 has conversion groove 220.

The head of handle 400 has cavity 410.Cavity 410 is regular 18 limit polygons, polygon The twice that limit number is latch quantity of shape.Adjacent two interior angles of polygon are connected on outward two together respectively On heart circle.Cavity has 9 reflex angles (at Fig. 5 round dot) 411, and reflex angle circumference uniform distribution.Reflex angle Inside it is connected on the cylindrical of retainer 200.Retainer 200 is arranged in cavity 410.

The driving end 110 of driving end assembly 100, rotary shaft 120,200,9 reflex angles of retainer 411 inscribed circles are for being coaxially disposed.

As it is shown in figure 5, the circumference laminating driving end 110 of latch 300 and cavity 410.Cavity 410 center of circle beeline circumscribed circles less than latch 300 arriving driving end assembly 100, cavity 410 longest distance circumscribed circles more than latch 300 arriving driving end assembly 100 center of circle.I.e. every Individual latch 300 can only move in two limits that polygon is adjacent, is limited cannot move by size Move other position.

Certainly, cavity 410 can use the quincunx of 9 lobes, if the structure of 9 reflex angles 411 Constant, other structures of cavity 410 do not limit.

First cover plate 500 is by the spacing rear end face being fixed on cavity 410 of step.Again to cavity 410 Load driving end assembly 100,200,9 latch 300 of retainer.Second cover plate 600 covers On driving end 110, it is fixed on the front end face of cavity 410 by jump ring.

Transducer 700 is fixed on handle 400 by bolt is rotatable.As it is shown on figure 3, conversion Device 700 has conversion boss 710.First cover plate 500 has chute 510.Conversion boss 710 After chute 510, in the conversion groove 220 of the rear end embedding retainer 200.Rot 700 Rotating, conversion boss 710 slides in chute 510, drives retainer 200 to rotate so that spine Wheel spanner switches between being rotated both clockwise and counterclockwise.

The operation principle of ratchet spanner:

As shown in Figure 6, when the handle of ratchet spanner rotates counterclockwise, latch receives size Limit, it is impossible to through the reflex angle that polygon is inside, frictional force is big.Latch, retainer and spanner Head can only rotate counterclockwise along with the handle of ratchet spanner.

When the handle of ratchet spanner turns clockwise, latch rotates to the place that size is big, rubs Wiping power reduces, and relatively slides between latch, retainer and handle, and driving end is not with ratchet spanner Handle turn clockwise.

In like manner, as it is shown in fig. 7, when the handle of ratchet spanner turns clockwise, latch receives The restriction of size, it is impossible to through the reflex angle that polygon is inside, frictional force is big.Latch, retainer Can only turn clockwise along with the handle of ratchet spanner with driving end.

When the handle of ratchet spanner rotates counterclockwise, latch rotates to the place that size is big, rubs Wiping power reduces, and relatively slides between latch, retainer and handle, and driving end is not with ratchet spanner Handle rotate counterclockwise.

Variation

Ratchet spanner in embodiment one, uses the polygonal knot on 9 latch and 18 limits Structure combines.

As shown in Figure 8, ratchet spanner can set not according to the size of spanner and the size of force With latch and the polygonal combination of quantity, it is not limited to the structure in embodiment one.

Claims

1. a ratchet spanner, it is characterised in that: include, if driving end assembly, retainer Dry latch and handle；

Wherein, described driving end assembly, described retainer are coaxially disposed；

Described retainer is enclosed within described driving end assembly；Described retainer circumference uniform distribution stop Groove, and with described latch one_to_one corresponding；

Described latch is arranged in described locking groove；

The head of described handle has cavity；Described retainer is arranged in described cavity；

The circumference described driving end assembly of laminating of described latch and described cavity；

Described cavity is less than described latch to the center of circle beeline of described driving end assembly Circumscribed circle, the longest distance of described cavity to the described driving end assembly center of circle is more than described latch Circumscribed circle.

2. ratchet spanner as claimed in claim 1, it is characterised in that:

Wherein, described cavity has the reflex angle identical with described latch quantity, and reflex angle circumference Uniform.

3. ratchet spanner as claimed in claim 2, it is characterised in that:

Wherein, the cross section of described retainer is annulus；Described retainer it is connected in described reflex angle Cylindrical on.

4. ratchet spanner as claimed in claim 1, it is characterised in that:

Wherein, described cavity is regular polygon, and described polygonal limit number is described latch The twice of quantity, adjacent two interior angles of described polygon are outer respectively to be connected on two concentric circulars.

5. ratchet spanner as claimed in claim 1, it is characterised in that:

Wherein, described cavity is quincunx.

6. ratchet spanner as claimed in claim 1, it is characterised in that:

Wherein, driving end assembly includes rotary shaft and driving end；Described driving end is fixed on described In rotary shaft；Described rotary shaft can rotate in described cavity.

7. ratchet spanner as claimed in claim 6, it is characterised in that:

Wherein, described driving end assembly also includes spring, is enclosed within described rotary shaft.

8. ratchet spanner as claimed in claim 1, it is characterised in that:

Also include the first cover plate and the second cover plate；Described first cover plate is fixed on by step is spacing One end face of described cavity；Described second cover plate is fixed on another of described cavity by jump ring Individual end face.

9. ratchet spanner as claimed in any of claims 1 to 8 in one of claims, it is characterised in that:

Also include transducer, rotatable be fixed on described handle；

Wherein, described transducer has conversion boss；Described retainer has conversion groove；Described Conversion boss embeds described conversion groove；Rotate described transducer, drive described retainer to rotate.