CN2881052Y

CN2881052Y - Telescopic ladder

Info

Publication number: CN2881052Y
Application number: CN 200620100923
Authority: CN
Inventors: 何海涛
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-02-08
Filing date: 2006-02-08
Publication date: 2007-03-21
Anticipated expiration: 2016-02-08

Abstract

The utility model belongs to the technical field of the building decoration hardware tools, in particular to an extension ladder used for house repair and indoor decoration, easy to carry and store. The existing ladders are not easy to use, carry and store. Aiming at these disadvantages, the utility model provides an extension ladder which is convenient to carry, store and use. The utility model comprises several levels of extension ladder steps, a pair of first level ladder pipes and a pair of last level ladder pipes, wherein the first level ladder pipe is inserted in the pipe orifice of the lower level ladder pipe, an upper fixed link is provided between a pair of the first level ladder pipes, the upper end of the first level ladder pipe is provided with a protective cover, the last level ladder pipe is wrapped on the upper ladder pipe, the bottom part of the last level ladder pipe is equipped with a skidproof footpad, a lower fixed link is provided between a pair of the last level ladder pipes and each level of the extension ladder step comprises a ladder pipe of the previous level, a ladder frame, a pin boss, a ladder pipe gasket, a pipe coil, a locking pin, an anti-pull end cover, a spring, a ladder pipe of the present level, a push button and a ladder pipe of the latter level.

Description

Extension ladder

Technical field

The utility model belongs to architectural decoration hardware ﹠ tools technical field, particularly a kind ofly is used for the extension ladder that is easy to carry, is convenient to deposit that the house is repaired and the upholster operation is used.

Background technology

Existingly be used for the not flexible of ladder that the house is repaired or decoration work is used, though it has characteristic of simple structure, it exists uses inconveniently, is not easy to carry, and also is not easy to the weak point of depositing.

Summary of the invention

The utility model is inconvenient at the existing use of existing ladder, is not easy to carry, and also is not easy to the weak point deposited, provides a kind of and is easy to carry, is convenient to deposit, extension ladder easy to use.

The technical solution adopted in the utility model is finished in the following way: a kind of extension ladder of the utility model, it comprises the flexible step of some levels, a correct level ladder pipe and a pair of tail level ladder pipe, wherein, the terraced pipe of head level is inserted in the pore of next stage ladder pipe, between the terraced pipe of a correct level, be provided with fixed bar, over cap be housed in the upper end of head level ladder pipe; Tail level ladder pipe box is provided with Slippery proof foot pad in the bottom of tail level ladder pipe on upper level ladder pipe, be provided with fixed bar down between a pair of tail level ladder pipe; Every grade of flexible step comprises previous stage ladder pipe, ladder, key seat, terraced pipe pad circle, pipeloop, lock pin, anti-pull end lid, spring, terraced pipe at the corresponding levels, push button and back one-level ladder pipe, pipeloop is contained in an end of ladder, pipeloop and ladder link together, key seat is housed in ladder, spring and lock pin are contained in the key seat, and key seat is contained in the open slot of pipeloop; Side at close key seat one end of ladder is provided with locating slot, and push button is contained in this locating slot, and push button and lock pin link together; Ladder pipe pad circle is contained in the pipeloop, and pipeloop is fixed on the upper end of terraced pipe at the corresponding levels; Anti-pull end lid is equipped with in lower end at the previous stage ladder pipe of every grade of flexible step, ladder pipe at the corresponding levels, back one-level ladder pipe and the terraced pipe of head level, all be provided with an impression that encloses position-limiting action at the external surface of the previous stage of every grade of flexible step ladder pipe, ladder pipe at the corresponding levels, back one-level ladder pipe and tail level ladder pipe, the anti-pull end lid that is contained on each terraced pipe can not be by the terraced impression circle of managing the lower end of the next stage that matches with it, and promptly each terraced pipe can not be drawn out from next stage ladder pipe; One side has a locking hole in previous stage ladder pipe lower end, and there is a locking hole back one-level ladder pipe upper end, and ladder pipe upper and lower side at the corresponding levels respectively has a locking hole.When extension ladder uses, the pulling ladder, it is the longest that ladder pipes at different levels are stretched, and lock pin passes the locking hole of previous stage ladder pipe and terraced pipe at the corresponding levels under the effect of spring simultaneously, plays the locking effect, and previous stage ladder pipe and terraced Guan Buhui at the corresponding levels are moved.When extension ladder is deposited, the push button on the ladder is promoted to the centre, lock pin withdraws from the locking hole of previous stage ladder pipe and terraced pipe at the corresponding levels, depresses ladder, makes terraced pipes at different levels be retracted to the shortest depositing.

The utility model extension ladder is compared with existing ladder, has being easy to carry, is convenient to deposit, characteristics easy to use.

Description of drawings

Fig. 1 is the structural representation of extension ladder.

Fig. 2 is the A-A sectional view of Fig. 1.

Stereogram when Fig. 3 is the extension ladder user mode.

Stereogram when Fig. 4 is the extension ladder contraction state.

The specific embodiment

Contrast accompanying drawing below, the utility model is described in further detail by embodiment.

With reference to accompanying drawing 1 and accompanying drawing 2, a kind of extension ladder, it comprises seven grades of flexible steps, a correct level ladder pipe 19 and a pair of tail level ladder pipe 20, wherein, head level ladder pipe 19 is inserted in the pore of next stage ladder pipe, between a correct level ladder pipe 19, be provided with fixed bar 16, over cap 1 be housed in the upper end of head level ladder pipe 19; Tail level ladder pipe 20 is enclosed within on the upper level ladder pipe, is provided with Slippery proof foot pad 14 in the bottom of tail level ladder pipe 20, is provided with fixed bar 18 down between a pair of tail level ladder pipe 20; Every grade of flexible step comprises previous stage ladder pipe 2, ladder 3, key seat 4, terraced pipe pad circle 5, pipeloop 6, lock pin 7, anti-pull end lid 9, spring 10, ladder pipe 11 at the corresponding levels, push button 12 and back one-level ladder pipe 13, pipeloop 6 is contained in an end of ladder 3, pipeloop 6 links together by rivet 17 with ladder 3, key seat 4 is housed in ladder 3, spring 10 and lock pin 7 are contained in the key seat 4, and key seat 4 is contained in the open slot of pipeloop 6; Side at ladder 3 close key seat 4 one ends is provided with locating slot, and push button 12 is contained in this locating slot, and push button 12 links together by soket head cap screw 8 with lock pin 7; Ladder pipe pad circle 5 is contained in the pipeloop 6, and pipeloop 6 is fixed on the upper end of ladder pipe 11 at the corresponding levels by plus screw 15; Anti-pull end lid 9 is equipped with in lower end at the previous stage ladder pipe 2 of every grade of flexible step, ladder pipe 11 at the corresponding levels, back one-level ladder pipe 13 and head level ladder pipe 19, all be provided with an impression that encloses position-limiting action at the external surface of the previous stage of every grade of flexible step ladder pipe 2, ladder pipe 11 at the corresponding levels, back one-level ladder pipe 13 and tail level ladder pipe 20, the anti-pull end lid 9 that is contained on each terraced pipe can not be by the terraced impression circle of managing the lower end of the next stage that matches with it, and promptly each terraced pipe can not be drawn out from next stage ladder pipe; One side has a locking hole in previous stage ladder pipe 2 lower ends, and there is a locking hole back one-level ladder pipe 13 upper ends, and ladder pipe 11 upper and lower sides at the corresponding levels respectively have a locking hole.When the locating hole of previous stage ladder pipe 2 and ladder pipe 11 at the corresponding levels during at same position, under the effect of spring 10 and push button 12, lock pin 7 moves along its axis, and passes the locking hole of previous stage ladder pipe 2 and ladder pipe 11 at the corresponding levels, thereby realizes latch functions.

With reference to accompanying drawing 3, extension ladder stretches when using, and pulling ladder 3 drives previous stage ladder pipe 2 ladder pipes 11 at the corresponding levels relatively and moves up.When the anti-pull end lid 9 that is contained in previous stage ladder pipe 2 lower ends arrives to the impression circle of ladder pipe 11 at the corresponding levels, previous stage ladder pipe 2 can't move, lock pin 7 passes the locking hole of previous stage ladder pipe 2 and ladder pipe 11 at the corresponding levels under the effect of spring 10 simultaneously, play the locking effect, previous stage ladder pipe 2 and ladder pipe 11 at the corresponding levels can not be moved.

With reference to accompanying drawing 4, extension ladder shrinks when depositing, and the push button on the ladder 3 12 is promoted to the centre, and lock pin 7 withdraws from the locking hole of previous stage ladder pipe 2 and ladder pipe 11 at the corresponding levels, depresses ladder 3, makes terraced pipes at different levels be retracted to the shortest depositing.

Claims

1, a kind of extension ladder, it is characterized in that this extension ladder comprises the flexible step of some levels, a correct level ladder pipe (19) and a pair of tail level ladder pipe (20), wherein, head level ladder pipe (19) is inserted in the pore of next stage ladder pipe, between a correct level ladder pipe (19), be provided with fixed bar (16), tail level ladder pipe (20) is enclosed within on the upper level ladder pipe, is provided with fixed bar (18) down between a pair of tail level ladder pipe (20); Every grade of flexible step comprises previous stage ladder pipe (2), ladder (3), key seat (4), terraced pipe pad circle (5), pipeloop (6), lock pin (7), anti-pull end lid (9), spring (10), ladder pipe at the corresponding levels (11), push button (12) and back one-level ladder pipe (13), pipeloop (6) is contained in an end of ladder (3), pipeloop (6) links together with ladder (3), key seat (4) is housed in ladder (3), spring (10) and lock pin (7) are contained in the key seat (4), and key seat (4) is contained in the open slot of pipeloop (6); Side at close key seat (4) one ends of ladder (3) is provided with locating slot, and push button (12) is contained in this locating slot, and push button (12) links together with lock pin (7); Ladder pipe pad circle (5) is contained in the pipeloop (6), and pipeloop (6) is fixed on the upper end of ladder pipe at the corresponding levels (11); Anti-pull end lid (9) is equipped with in the lower end of managing (11), back one-level ladder pipe (13) and head grade ladder pipe (19) at the previous stage ladder pipe (2) of every grade of flexible step, ladder at the corresponding levels, all be provided with an impression that encloses position-limiting action at the external surface of the previous stage of every grade of flexible step ladder pipe (2), ladder pipe at the corresponding levels (11), back one-level ladder pipe (13) and tail level ladder pipe (20), be contained in the impression circle that anti-pull end lid (9) on each terraced pipe can not be managed the lower end by the next stage ladder that matches with it; One side has a locking hole in previous stage ladder pipe (2) lower end, and there is a locking hole back one-level ladder pipe (13) upper end, and ladder pipe (11) upper and lower side at the corresponding levels respectively has a locking hole.

2, extension ladder according to claim 1 is characterized in that being provided with Slippery proof foot pad (14) in the bottom of tail level ladder pipe (20).

3, extension ladder according to claim 1 and 2 is characterized in that in the upper end of head level ladder pipe (19) over cap (1) being housed.

4, extension ladder according to claim 1 and 2 is characterized in that pipeloop (6) and ladder (3) link together by rivet (17).

5, extension ladder according to claim 1 and 2 is characterized in that push button (12) and lock pin (7) link together by soket head cap screw (8).

6, extension ladder according to claim 1 and 2 is characterized in that pipeloop (6) is fixed on the upper end of ladder pipe at the corresponding levels (11) by plus screw (15).