CN2316091Y

CN2316091Y - Socket wrench

Info

Publication number: CN2316091Y
Application number: CN 98202427
Authority: CN
Inventors: 巩希元
Original assignee: Individual
Current assignee: Yang Chunwei
Priority date: 1998-03-23
Filing date: 1998-03-23
Publication date: 1999-04-28
Anticipated expiration: 2008-03-23

Abstract

The utility model discloses a sleeve spanner. A longitudinal recess is arranged on the inner wall of a sleeve. A top circle with a corresponding convex supporting plate and the recess are in tight fit and installed inside the sleeve. Fixing needles with springs are inserted on the supporting plate in a sliding fit. Nuts can be locked tightly through extending and retreating the partial fixing needles and springs flexibly, a sleeve rod can be matched to rotate powerfully, and the loading and the unloading of the nuts and screw bolts can be realized. The utility model can cause a sleeve spanner to fit nuts with various specifications and different shapes. The stepless use for loading and unloading the nuts can be achieved. The utility model has the advantages of simple structure and easy use.

Description

A kind of box spanner

The utility model relates to machine tool, relates in particular to a kind of box spanner.

Box spanner uses extremely extensive as production industry, maintenance industry and the civilian conventional tool that carries out the nut-screw loading and unloading in daily.Can be described as people work the life in indispensable instrument.But can only use by directed and fixed degree at the current box spanner that uses and produced, it is the nut use that a kind of box spanner can only be suitable for a kind of specification and a kind of shape, and the combined sleeve spanner also can only be the use that adapts to the plurality of specifications nut by different parts on the replacing sleeve, all exist significant limitation at presently used various box spanners thus, and can not be general, use extremely inconvenient.

The purpose of this utility model provides a kind of multi-functional box spanner that can both be suitable for automatically for the nut of all size shape.

In order to achieve the above object, the utility model adopts following structure, comprises loop bar, sleeve; The sleeve lining section configuration is an equilateral hexagon, on each limit of equilateral hexagon, a longitudinal fluting is arranged, extend to the sleeve top from the sleeve middle part, cylindrical have with the plastic support dish of groove respective protrusions by the tight fit of longitudinal fluting with projection, put into sleeve middle part and location, center at supporting disk is provided with mesopore, the top that is slidingly installed in the hole is the middle pin of hexahedron, be with a spring on the middle pin, the end of bullet Huang withstands on the hexahedron of middle pin, the other end withstands on the plane of supporting disk, to be provided with the top that all is slidingly installed in each hole, the identical hole of a plurality of diameters be the cylindrical pin of deciding arranging with equilateral equidistant triangle rule on the plane of supporting disk, be with a spring on the intact pin, one end of spring withstands on the cylinder of deciding pin, and the other end also withstands on the plane of supporting disk.

During use, when the nut that is loaded and unloaded is headed in the sleeve, in the part that contacts with nut of pin decide that pin is then headed into the bottom of sleeve with nut and other the pin of deciding is clamped nut under the effect of spring, by decide friction that the mutual angle of pin produced and by with supporting disk on decide pin transmission the pin of deciding that effluxes is most contacted with sleeve lining, thereby all size and the difform nut that enter in the sleeve are locked, utilize the afterburning rotational sleeve of loop bar or ratchet again, nut can be loaded and unloaded from screw rod easily.

Owing to the utility model has adopted above-mentioned decide pin and the flexible flexibly and a plurality of structures of deciding the equilateral equidistant triangle rule arrangement locking nut of pin of spring cooperation, make a box spanner can be suitable for plurality of specifications and difform nut, reached the stepless use of nut loading and unloading, simple in structure easy to use.

Below in conjunction with accompanying drawing in detail the utility model is described in detail.

Fig. 1 is the new structural representation of this practicality.

Fig. 2 is the cutaway view along the A-A line of Fig. 1.

Fig. 3 is middle needle construction schematic diagram.

Fig. 4 is for deciding the structural representation of pin.

From Fig. 1 and Fig. 2, can find out, the utility model comprises sleeve 1, loop bar 7, supporting disk 3, middle pin 2, decide pin 4, spring 5, the cross section of sleeve 1 inwall is a hexagon, a longitudinal fluting 8 that extends to the top from sleeve 1 middle part is all arranged on each limit, uniform 6 and groove 8 corresponding protruding 6 on the cylindrical of supporting disk 3, supporting disk 3 cooperates to advance in the sleeve 1 and the location by projection 6 and tongue 8, supporting disk 3 centers are provided with a mesopore, the top that is slidingly installed in the mesopore is the middle pin 2 of hexahedron, on middle pin 2, be with a spring 5, spring 5 one ends withstand on the hexahedron of middle pin 2, the other end then withstands on the plane of supporting disk 3, on the plane of supporting disk 3, arranging 56 through holes with equilateral equidistant triangle rule, all top of tight fit installation is the cylindrical pin 4 of deciding on each hole, deciding to be with spring 5 on the pin 4, spring 5 one ends withstand on the cylinder of deciding pin 4, in an end also withstand on the plane of supporting disk 3 structure that 4 of Fig. 3 diagrammatic sketch have demonstrated middle pin 2 and decided pin 4.

Longitudinal fluting 8 can be on hexagonal each limit one or two to be set, and also can be every a limit one or two to be set, and in like manner the projection 6 on supporting disk 3 cylindricals is also corresponding with the quantity and the position of groove 8.

Claims

1. a box spanner comprises loop bar, sleeve, and the sleeve lining section configuration is an equilateral hexagon, it is characterized in that: each limit of sleeve (1) inwall equilateral hexagon is provided with longitudinal fluting (8), extends to the top of sleeve (1) from the middle part of sleeve (1).Cylindrical has with the plastic support dish of groove respective protrusions puts into sleeve (1) middle part and location by the groove (8) and the tight fit of projection (6), at supporting disk (3) center a mesopore is arranged, the top that is slidingly installed in the hole is the middle pin (2) of equilateral hexahedron, be with spring (5) on the middle pin (2), one end of spring (5) withstands on the hexahedron of middle pin (2), the other end withstands on the plane of supporting disk (3), on the plane of supporting disk (3), be provided with the identical through hole of a plurality of diameters with the arrangement of equilateral equidistant triangle rule, the top that all is slidingly installed in each hole is the cylindrical pin (4) of deciding, decide to be with on the pin (4) spring (5), one end of spring (5) withstands on the cylinder of deciding pin (4), and the other end also withstands on the plane of supporting disk (3).

2. box spanner according to claim 1 is characterized in that: the longitudinal fluting that is provided with on the limit of sleeve lining equilateral hexagon (8) can be one or 2, Yi Bian also can be every being provided with one or two.

3. box spanner according to claim 1 is characterized in that: the projection (6) on described supporting disk (3) cylindrical is corresponding one by one with longitudinal fluting (8) on the sleeve lining.