CN205817696U

CN205817696U - A kind of shell fragment for ratchet spanner

Info

Publication number: CN205817696U
Application number: CN201620701181.5U
Authority: CN
Inventors: 黄春英
Original assignee: Individual
Current assignee: Individual
Priority date: 2016-07-05
Filing date: 2016-07-05
Publication date: 2016-12-21
Anticipated expiration: 2026-07-05

Abstract

This utility model provides a kind of shell fragment for ratchet spanner, including: a base portion, a blade and two support arms.Blade stretches out along same plane from one end of base portion.Two support arms extend from the side of base portion respectively, and along the direction bending in 90 ° with base portion place plane.Two support arms also extend along the direction parallel with blade, so that forming breach between support arm and blade.Two support arms are additionally provided with arcuate edge, and its relative vane is positioned at the other end of shell fragment.Shell fragment for ratchet spanner of the present utility model, compared with common spring, is not likely to produce elastic fatigue, and service life is long；And, shell fragment is independently contained in the recess of Wrench head opening, it is not necessary to special handling, with low cost.

Description

A kind of shell fragment for ratchet spanner

Technical field

This utility model belongs to ratchet type, for providing the technical field of the hand-operated tools of the free return stroke of handle, special Do not relate to a kind of ratchet spanner.

Background technology

Usually, the structure of one-way ratchet wrench is: the ratchet of ratchet and the ratchet phase in the recess of Wrench head opening Engagement, and this recess is provided with an aperture at the reverse position of ratchet, is provided with a spring in this aperture, and the other end of this spring with Ratchet medial extremity is connected.Therefore, this ratchet can be made to have one by the compressive deformation of spring and inside contract nargin, so, when pulling When the action of hands and ratchet are set in the same direction, ratchet can produce unidirectional spine move effect.

But, in actual use, this spring by long-term use after, it is possible to create the deformation that elastic fatigue causes, it is possible to Aperture can be departed from or disconnect with ratchet, thus, affect the function of unidirectional spine move.It addition, aperture must drill during fabrication separately, will Improve overall cost, therefore, consider based on to service life and Financial cost, it is necessary to the knot to this one-way ratchet wrench Structure improves.

Utility model content

The purpose of this utility model is: provide a kind of shell fragment for ratchet spanner.

The technical solution of the utility model is: a kind of shell fragment for ratchet spanner, including: a base portion, a blade and two Support arm.Blade stretches out along same plane from one end of base portion.Two support arms respectively from the side of base portion extend, and along with The direction bending that base portion place plane is in 90 °.Two support arms also extend along the direction parallel with blade, so that support arm and leaf Breach is formed between sheet.Two support arms are additionally provided with arcuate edge, and its relative vane is positioned at the other end of shell fragment.

In certain preferred embodiment, shell fragment is made up of metal material.

In certain preferred embodiment, metal material is rustless steel or phosphor bronze.

In certain preferred embodiment, base portion, blade and support arm are one-body molded.

In certain preferred embodiment, the width of blade is less than the width of base portion.

In certain preferred embodiment, when being in bending state, blade is relative with base portion angled.

Of the present utility model have the beneficial effect that the shell fragment for ratchet spanner of the present utility model and common spring phase Ratio, is not likely to produce elastic fatigue, and service life is long；And, shell fragment is independently contained in the recess of Wrench head opening, it is not necessary to special Different process, with low cost.

Accompanying drawing explanation

Fig. 1 is the axonometric chart of the shell fragment for ratchet spanner of the present utility model.

Fig. 2 is the front view of the shell fragment for ratchet spanner of the present utility model.

Fig. 3 is the explosive view of ratchet spanner of the present utility model.

The implication of reference: 10-ratchet spanner, 11-head, 12-recess, 13-opening, 20-ratchet, 21-ratchet Ratchet, 30-ratchet, the ratchet of 31-ratchet, 40-shell fragment, 41-base portion, 42-support arm, 43-blade, 45-arcuate edge, 46- Breach, the width of W1-blade, the width of W2-base portion.

Detailed description of the invention

The shell fragment for ratchet spanner of the present utility model is specifically described below in conjunction with accompanying drawing.

Seeing attached Fig. 1 and 2, the shell fragment 40 for ratchet spanner of the present utility model has elasticity, is made up of metal material, Such as, rustless steel, phosphor bronze etc..Shell fragment 40 includes a base portion 41, blade 43 and two support arms 42, and three in one molding. Blade 43 stretches out along same plane from one end of base portion 41.When being in bending state, blade 43 is relative with base portion 41 in one Determine angle.The width W1 of blade 43 is less than the width W2 of base portion.Two support arms 42 respectively from the side of base portion 41 extend, and along with The direction bending that base portion 41 place plane is in 90 °.It addition, two support arms 42 also extend along the direction parallel with blade 43, thus Make to be formed between support arm 42 and blade 43 breach 46.Breach 46 can make blade 43 bend to support arm 42, but can not make blade 43 touch support arm 42.Two support arms 42 are additionally provided with arcuate edge 45, and its relative vane 43 is positioned at the other end of shell fragment 40.

Participating in accompanying drawing 3, ratchet spanner 10 of the present utility model includes head 11 and handle (figure is not marked).Head 11 is provided with one Opening 13.Inside opening 13, the one end near handle is provided with a recess 12.One ratchet 30 is rotatably received in opening 13, and Its side face is provided with ratchet 31.One ratchet 20 is contained in recess 12 swingably, and it is provided with ratchet towards the side of ratchet 30 21.Shell fragment 40 is contained in the space between ratchet 30 and recess 12 1 medial surface, and its base portion 41 is resisted against ratchet 30, its blade 43 Being resisted against ratchet 20, its arcuate edge 45 is resisted against a medial surface of recess 12.The elastic force that blade 43 provides can make ratchet 20 Ratchet 21 engages with the ratchet 31 of ratchet 30.

The operation principle of ratchet spanner of the present utility model is: 1) when ratchet spanner rotates along the direction that gets loose, shell fragment 40 Being forced to little, blade 43 is little with the bending angle of base portion 41, it is allowed to ratchet 20 is resisted the elastic force of blade 43 and slightly swung, thus It is disengaged from ratchet 30, makes ratchet 30 relatively to slide by ratchet 20；2) when ratchet spanner rotates along fastening direction, shell fragment 40 Being forced to big, blade 43 is big with the bending angle of base portion 41, and ratchet 20 recovers to engage with ratchet 30 under the elastic force effect of blade 43, Ratchet 30 is made relatively to slide by ratchet 20, ratchet spanner thus outside outputting torsion.

Shell fragment for ratchet spanner of the present utility model, compared with common spring, is not likely to produce elastic fatigue, therefore, makes Use the life-span long.And, shell fragment 40 is contained in recess 12 independently based on the frictional force between ratchet 20, ratchet 30, recess 12 In, it is not necessary to special handling, therefore, simple in construction, with low cost.

Of the present utility model basic structure, operation principle and technological merit have more than been shown and described.This area common Skilled person will appreciate that, above-described embodiment limits protection domain of the present utility model the most in any form, and all employings equivalent is replaced The technical scheme that the mode such as change is obtained, all falls within protection domain of the present utility model.

Claims

1. for a shell fragment for ratchet spanner, including: a base portion (41), a blade (43) and two support arms (42)；

Blade (43) stretches out along same plane from one end of base portion (41)；

Two support arms (42) extend from the side of base portion (41) respectively, and curved along the direction in 90 ° with base portion (41) place plane Folding；

Two support arms (42) also extend along the direction parallel with blade (43), so that shape between support arm (42) and blade (43) Become breach (46)；

Two support arms (42) are additionally provided with arcuate edge (45), and its relative vane (43) is positioned at the other end of shell fragment.

2. the shell fragment for ratchet spanner as claimed in claim 1, it is characterised in that: described shell fragment is made up of metal material.

3. the shell fragment for ratchet spanner as claimed in claim 2, it is characterised in that: described metal material is rustless steel or phosphorus Bronze.

4. the shell fragment for ratchet spanner as claimed in claim 1, it is characterised in that: described base portion (41), described blade And described support arm (42) is one-body molded (43).

5. the shell fragment for ratchet spanner as claimed in claim 1, it is characterised in that: the width of described blade (43) is less than institute State the width of base portion (41).

6. the shell fragment for ratchet spanner as claimed in claim 1, it is characterised in that: when being in bending state, described blade (43) relative angled with described base portion (41).