CN2675838Y

CN2675838Y - Telescopic folding ladder

Info

Publication number: CN2675838Y
Application number: CN 200320122477
Authority: CN
Inventors: 王振辉
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-12-10
Filing date: 2003-12-10
Publication date: 2005-02-02
Anticipated expiration: 2013-12-10

Abstract

The utility model provides a telescopic folding ladder, comprising two ladder bodies which are formed from longitudinal components and transverse pedals, connecting hinges which are provided on the ends of the two ladder bodies, and locking pieces which are hinged on the longitudinal components of the ladder bodies. The lower halves of the longitudinal components are n-shaped tubes. The openings of the n-shaped tubes are positioned on the inside of the two components which form each ladder body. The n-shaped tubes are sheathed with telescopic rods, and one side of the telescopic rod which exposes a n-shaped opening is in the shape of indentation. A telescopic locking block is respectively provided between the place near the bottom of the longitudinal components and the lowest transverse pedal to fix the telescopic position. The utility model can be used as a herringbone ladder as well as a straight ladder. The ladder bodies can be elongated while in use to increase the height of climbing. The telescopic folding ladder is in particular to be used on uneven ground or hillside, and the length of each longitudinal component can be adjusted. The utility model has the advantages of flexible telescoping, firm and safe position, and beautiful appearance when the transverse pedals are adjusted into horizontal pedals.

Description

The telescopic folding ladder

Technical field

The utility model relates to the ladder technical field, especially relates to the fold concertina-wise ladder.

Background technology

China's utility model patent once disclosed a kind of " scalable folding step ", and (patent No.: 98233831.7), be made of pillar, step, top board and linkage, pillar has two groups, the every group of formation one that is nested successively from large to small, during use each group pillar is elongated, reduce storage space, be easy to carry; But this utility model moulding is coarse and crude, and the location, back that stretches is complicated, especially uses on uneven ground, separately adjustable fixing length.

Summary of the invention

The purpose of this utility model is in order to overcome the deficiency of prior art, provide a kind of both had can regulate longitudinal member length separately, flexibly flexible again, firm position safety, telescopic folding ladder handsome in appearance.

To achieve these goals, the technical solution of the utility model is such: a kind of telescopic folding ladder, by longitudinal member with laterally two terraced bodies constituting of step, the lock dog that is connected hinge, is articulated on the terraced body longitudinal member of two terraced body ends are formed; The Lower Half of said longitudinal member is " ∏ " type pipe, and its opening is in the inboard of two longitudinal members forming each terraced body, socket expansion link in " ∏ " type pipe, this expansion link expose indention of " ∏ " type tube opening; One flexible location lock dog respectively is set, with fixing telescopic location between the nearly bottom of longitudinal member and a minimum horizontal pedal.

Owing to adopted technique scheme, the utility model both can be used as double ladder, can be used as yi shaped ladder again, can elongate terraced body during use, increased to climb height; Especially use at uneven ground or hillside occasion, can regulate every longitudinal member length arbitrarily, horizontal pedal is adjusted to level, have again and stretch flexibly firm position safety, characteristics handsome in appearance.

Description of drawings

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1 is a structural representation of the present utility model.

Fig. 2 is the serrated face 7 local amplification views of the utility model parts 5 expansion links.

Fig. 3 is the structure for amplifying schematic diagram of locking plate in the utility model parts 6 flexible location lock dogs.

Among the figure: 1, hinge, 2, terraced body lock dog, 3, the longitudinal member of terraced body, 4, horizontal pedal, 5, expansion link, 6, flexible location lock dog, 7, the serrated face of expansion link, 8, the serrated face of locking plate, 9, pivot pin, 10, back-moving spring,, 11, handle.

The specific embodiment

By shown in Figure 1, a kind of telescopic folding ladder of the present utility model is by longitudinal member 3 with laterally two terraced bodies constituting of step 4, the lock dog 2 that is connected hinge 1, is articulated on the terraced body longitudinal member of two terraced body ends are formed; The Lower Half of said longitudinal member is " ∏ " type pipe, and its opening is in the inboard of two longitudinal members forming each terraced body, socket expansion link 5 in " ∏ " type pipe, this expansion link expose indention 7 of " ∏ " type tube opening; Each fixes a flexible location lock dog 6 between the nearly bottom of longitudinal member and a minimum horizontal pedal, with fixing telescopic location.

By shown in Figure 2, be the broken section shape of the serrated face 7 of the utility model parts 5 expansion links.

By shown in Figure 3, be the locking plate in the described parts 6 flexible location lock dogs, this locking plate places between two panels of housing of flexible location lock dog 6, is hinged by pivot pin 9 and lock dog housing, and this locking plate has a serrated face 8, and it is meshed with the serrated face 7 of expansion link; One back-moving spring 10 is set on pivot pin 9, on locking plate, also is provided with handle 11.

Stir handle 11 during use, compression reseting spring 10 is thrown off the serrated face 8 and the serrated face 7 of expansion link of locking plate, and expansion link can freely stretch, determine collapsing length after, unclamp handle, spring reset, the pinning expansion link is located.

Claims

1, a kind of telescopic folding ladder, by longitudinal member (3) and laterally two terraced bodies constituting of step (4), and the lock dog (2) that is connected hinge (1), is articulated on the terraced body longitudinal member of two terraced body ends form, it is characterized in that: the Lower Half of said longitudinal member is " ∏ " type pipe, its opening is in the inboard of two longitudinal members forming each terraced body, socket expansion link (5) in " ∏ " type pipe, this expansion link expose " ∏ " type indention of tube opening (7); Each fixes a flexible location lock dog (6) between the nearly bottom of longitudinal member and a minimum horizontal pedal.

2, a kind of telescopic folding ladder according to claim 1, it is characterized in that: in the lock dog of the flexible location of described parts (6), a locking plate is arranged, this locking plate places between two panels of housing of flexible location lock dog (6), be hinged by pivot pin (9) and lock dog housing, this pin sheet has a serrated face (8), and it is meshed with the serrated face (7) of expansion link; One back-moving spring (10) is set on pivot pin (9), on locking plate, also is provided with handle (11).