CN102039566A

CN102039566A - Sleeve wrench

Info

Publication number: CN102039566A
Application number: CN 201110028355
Authority: CN
Inventors: 姚建明
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-01-26
Filing date: 2011-01-26
Publication date: 2011-05-04

Abstract

The invention discloses a sleeve wrench which has low cost, and is convenient in use and high in operational reliability. The sleeve wrench comprises a sleeve and a handle, wherein the sleeve is composed of a jacket and a sleeve assembly embedded in the jacket; all single pieces in the sleeve assembly are successively nested to form an assembly from small to big; the axial chutes of same size are arranged on the side walls of all single pieces in the sleeve assembly at least along one same direction; the position, corresponding to the chute, on the jacket is provided with a fixed pin; a spring disc is arranged between the sleeve assembly and the bottom of the cavity of the jacket and is evenly distributed with elastic sheets in sequence from outside to inside; and each elastic sheet respectively corresponds to the inner end of each single piece in the sleeve assembly and keeps elastic cooperation. The invention can simultaneously adapt to nuts of various specifications, is convenient to use and can quickly screw the corresponding nut during operation.

Description

A kind of box spanner

Technical field

The present invention relates to a kind of instrument, particularly a kind of box spanner.

Background technology

Box spanner is difficult for slipping out of the hand and is used widely with easy to operate.But box spanner customizes by independent specification, and a box spanner can only be used for operating at the nut of a certain specific standard, therefore, all is custom bulk/volume buying and complete carrying in the use, could tackle the operation of various different size nuts.So, the cost of configuration box spanner is just higher, because its volume is big, heavy, is difficult for being widely accepted.Therefore, monkey wrench and price be low, be suitable for that specification is general encloses characteristics such as wide, in light weight, becomes the instrument of the replacement box spanner of common first-selection.Monkey wrench when operation, regulate to adapt to the nut of all size, also exist in the operating process easily loosening, the phenomenon of also deviating from nut easily, misoperation or overexert injuredly easily, the reliability of operation is not high.

Summary of the invention

The purpose of this invention is to provide a kind of cost low, be easy to use and box spanner that operating reliability is higher.

Technical scheme of the present invention is: comprise sleeve and handle, sleeve and handle are hinged by connecting pin, described sleeve is made up of overcoat and the sleeve assembly that is embedded in the overcoat, the shape of all single-pieces is identical in the sleeve assembly, and the nested successively from small to large constituent components of all single-pieces, the inwall of the outer wall of each single-piece and upper level single-piece is slidingly matched, have the axial slide of identical size in the sleeve assembly at least one equidirectional sidewall of all single-pieces, put outward with the chute correspondence position and be provided with steady pin, this steady pin one end inwardly stretches out the inwall that surpasses minimum single-piece, steady pin and chute are slidingly matched, between sleeve assembly and the overcoat intracavity bottom spring disc is housed, be evenly equipped with shell fragment on the spring disc from outside to inside successively, each shell fragment respectively with sleeve assembly in each single-piece inner corresponding and keep resilient engagement.

The outer end of each single-piece bounces back successively step by step and forms the terraced utmost point in the described sleeve assembly, and is big more the closer to the single-piece amount of recovery at center.

The invention has the beneficial effects as follows: adopt the nut of sleeve assembly energy simultaneous adaptation plurality of specifications, save cost, reduce volume and weight, very convenient to use; Adopt the spring disc, the single-piece that each shell fragment is corresponding with each independently respectively in the sleeve assembly ejected, so as in the operating process at the nuts of different sizes, can select corresponding monomer adaptively; Adopt steady pin, the one, prevent that all monomers are deviate from the sleeve assembly from overcoat.The 2nd, play position-limiting action, guarantee that each single-piece can only move back to a certain degree, excessively oppress shell fragment to prevent each single-piece, make shell fragment produce plastic deformation, influence the rebound performance of shell fragment; Each single-piece bounces back step by step and forms the step inner concavity in the sleeve assembly, can entangle corresponding nut fast during operation.

Description of drawings

Fig. 1 is the structural representation of the embodiment of the invention.

Fig. 2 is the STRUCTURE DECOMPOSITION figure of Fig. 1.

Fig. 3 is the structural representation of middle sleeve assembly of the present invention.

Fig. 4 is the STRUCTURE DECOMPOSITION figure of Fig. 3.

Fig. 5 is the structural representation of medi-spring disc of the present invention.

Fig. 6 removes the outer structure cutaway view of handle among the present invention.

The specific embodiment

Below in conjunction with drawings and Examples the present invention is described in further detail, but does not constitute any limitation of the invention.Fig. 1, Fig. 2 and shown in Figure 6 the present invention includes sleeve 3 and handle 1, and handle 1 and sleeve 3 can be designed as one, also can be articulated as one by connecting pin 2.Described sleeve 3 is made up of overcoat and the sleeve assembly 4 that is embedded in the overcoat.Fig. 3 and shown in Figure 4, the shape of all single-pieces is identical in the sleeve assembly 4, and the nested successively from small to large constituent components of all single-pieces, the inwall of the outer wall of each single-piece and upper level single-piece is slidingly matched, have the identical axial slide of size in the sleeve assembly 4 at least one equidirectional sidewall of all single-pieces, the base of all single-piece upper hopper chutes equates with the distance of the inner, makes all single-pieces when normality, keep inner place at grade, so that each outer end forms step.Fig. 2 and shown in Figure 6, put outward with the chute correspondence position and be provided with steady pin 5, these steady pin 5 one ends inwardly stretch out the inwall that surpasses minimum single-piece, and steady pin 5 is slidingly matched with chute, between sleeve assembly 4 and the overcoat intracavity bottom spring disc 6 is housed, also available screw 8 is fixed on the overcoat intracavity bottom.Shown in Figure 5, be evenly equipped with shell fragment 7 on the spring disc 6 from outside to inside successively, each shell fragment 7 respectively with sleeve assembly 4 in each single-piece inner corresponding and keep resilient engagement.

The course of work is as follows: under normal conditions, the inner of each single-piece ejects maximum position in the box spanner of the present invention under shell fragment 7 effect, promptly up to the base of chute with till steady pin 5 contacts, at this moment, the step hole of a center indent of sleeve assembly 4 formation.During operation, nut is light presses and turn simultaneously to living with box spanner of the present invention, in the turn process, may contact with a plurality of single-pieces simultaneously by nut, after the correspondence of the nut position of a certain single-piece and corresponding size in the sleeve assembly 4, box spanner can go forward one by one to the nut direction, this single-piece and do not contact simultaneously with nut greater than all single-pieces of this single-piece, under the effect of shell fragment 7, reset, at this moment, this single-piece is entangled nut, further press down box spanner on earth, contact fully with pane, turn nut then and get final product with the sidewall that guarantees this single-piece.

Claims

1. a box spanner comprises sleeve and handle (1), and sleeve (3) and handle (1) are hinged by connecting pin (2), it is characterized in that: described sleeve (3) is made up of overcoat and the sleeve assembly (4) that is embedded in the overcoat; The shape of all single-pieces is identical in the sleeve assembly (4), and the nested successively from small to large constituent components of all single-pieces, the inwall of the outer wall of each single-piece and upper level single-piece is slidingly matched, and has the axial slide of identical size in the sleeve assembly (4) at least one equidirectional sidewall of all single-pieces; Put outward with the chute correspondence position and be provided with steady pin (5), these steady pin (5) one ends inwardly stretch out the inwall that surpasses minimum single-piece, and steady pin (5) is slidingly matched with chute; Spring disc (6) is housed between sleeve assembly (4) and the overcoat intracavity bottom, be evenly equipped with shell fragment (7) on the spring disc (6) from outside to inside successively, each shell fragment (7) respectively with sleeve assembly (4) in each single-piece inner corresponding and keep resilient engagement.

2. box spanner according to claim 1 is characterized in that: the outer end of each single-piece bounces back step by step successively in the described sleeve assembly (4), and is big more the closer to the single-piece amount of recovery at center.