CN201212352Y

CN201212352Y - Telescopic ladder

Info

Publication number: CN201212352Y
Application number: CNU2008201115680U
Authority: CN
Inventors: 郭晶耀
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-05-14
Filing date: 2008-05-14
Publication date: 2009-03-25
Anticipated expiration: 2018-05-14

Abstract

The utility model discloses a telescopic ladder which comprises a plurality of ladder post units, transversal gangboards and locking mechanisms, wherein the ladder post units are formed by connecting a plurality of hollow ladder pipes with different pipe diameters in series, a connecting sleeve piece is respectively sleeved at the upper end of each hollow ladder pipe, and one end of each connecting sleeve piece is assembled with a locking mechanism and a transversal gangboard. After the integral assembly, the telescopic ladder is extremely secure and firm, the telescopic ladder is not only convenient to be controlled, but also can prevent foreign objects from infiltrating to cause damage. When the telescopic ladder is stretched for use, the locking rod assembled on each outer hollow ladder pipe penetrates through the penetrating and fixing hole of the lower section of each inner hollow ladder pipe to ensure the inner hollow ladder pipe to be fixed, and when the locking rods exit, the inner hollow ladder pipe can be automatically lowered and folded.

Description

Extension ladder

Technical field

The utility model relates to a kind of extension ladder, and it is more firm really particularly to relate to a kind of package assembly, and is easy to assembling and the extension ladder with preferable safety.

Background technology

The use of ladder has become the indispensable instrument of people, the utensil of ascending a height such as ladder or scaffold for example, and all providing people can be easily and obtain apace or construct and be located at the effective tool of eminence article.

General ladder, as shown in Figure 1, this ladder 800 is joined by two cleat stanchions and to form, and the cleat stanchion lower end is provided with foot pad and skids preventing, then is provided with the pedal of the suitable distance of being separated by therebetween, is the A font during use for use.

This traditional type ladder because its overall volume is quite big, carries quite inconvenience, and folding and unfolding also need take of such a size space, lacks to use elasticity.

The utility model content

The purpose of this utility model is, a kind of extension ladder is provided, and this extension ladder is that multi-section type cleat stanchion unit, horizontal gangboard and locked mechanism are formed, and each saves the cleat stanchion unit is made up of hollow ladder pipe and connection external member, so can conveniently fold the use of carrying, collect or stretch.

Another purpose of the present utility model is, it is fixing that its hollow ladder pipe and connecting sticks together after external member fixes each other again, is difficult for getting loose.

An also purpose of the present utility model is that it connects external member and avoids the corrosion damage because of the coating that horizontal gangboard is arranged.

A kind of extension ladder of the utility model is to adopt following technological means to realize:

A kind of extension ladder, comprise most cleat stanchions unit, horizontal gangboard and locked mechanism, described cleat stanchion unit is composed in series by the different hollow ladder pipe of several calibers, and each hollow ladder pipe upper end also is arranged with the connection external member, and connection external member one end is then organized and established locked mechanism and horizontal gangboard.

Described hollow ladder pipe and connection external member are for sticking together combination.

Described connection external member is provided with the mucus runner in inside and outside ring wall and makes with hollow ladder pipe and cohere for injecting adhesive agent.

The inside and outside mucus runner of described connection external member is to communicate.

The local paragraph complex of described ladder pipe upper end becomes to have the hemispherical tenon, and is connected external member in the mutual embedding in the set hole of relative position.

Described connection external member, having one can be for the socketed pipe that coats, and to be located at socket caliber direction be the upright fishplate bar that is parallel to each other, and its pipe periphery is provided with clamping hole again between parallel fishplate bar.

Described locked mechanism, comprise stop, locking bar, spring and driving lever, wherein, stop front end both sides are to collude end can supply to block mutually with the fishplate bar that is connected external member, its inner rear end has one can be for the spring groove that is installed with spring, spring is held the contact locking bar in addition, and the locking bar stage casing is that axle pitches for driving lever that it moves forward and backward into control.

Described hollow ladder pipe lower end is provided with Buffer Unit again, and this Buffer Unit slightly is the cover tubular, and the button hole that is fixed in terraced pipe is colluded by trip in its upper end, and its hypomere periphery is provided with the elasticity seal that keeps friction when it is contacted with the ladder pipe is inner.

Described Buffer Unit inside is provided with a glued membrane again, and the glued membrane surface is formed with can be for the hole of air turnover.

The utility model extension ladder compared with prior art has following remarkable advantages and beneficial effect:

Because be provided with Buffer Unit in hollow ladder pipe lower end, the default button hole that is fixed in terraced pipe is colluded by trip in its upper end, its hypomere periphery then is provided with when the elasticity seal supplies to make it to contact with the ladder pipe is inner and keeps friction, folds with minimizing noise and buffering.Its inside is provided with a glued membrane, and when Buffer Unit moved up and down along with terraced pipe, air can be through this hole turnover, to promote buffering effect.After assembling was finished, the terraced pipe of hollow had Buffer Unit because of the bottom, can increase with the buffering that contacts of outer ladder pipe inner tubal wall to rub; The ladder pipe that ladder pipe upper end is set and connect external member closely cohere fixing, so the very not only convenient control of safety and firmness after overall package is finished and can be avoided foreign object to infiltrate causing damage.When stretch using, the hypomere of inner hollow ladder pipe fastens the hole and is organized to establish to pass to the locking bar of outside hollow ladder pipe it is located, and when locking bar withdraws from, inner hollow ladder pipe promptly can descend automatically and fold.

Description of drawings

Fig. 1 is the stereogram of existing extension ladder;

Fig. 2 is three-dimensional diagrammatic sketch for the utility model folds;

Fig. 3 launches to use three-dimensional diagrammatic sketch for the utility model;

Fig. 4 A is the three-dimensional exploded view of cleat stanchion of the present utility model unit and horizontal gangboard;

Fig. 4 B is another three-dimensional exploded view of cleat stanchion of the present utility model unit and horizontal gangboard;

Fig. 5 is the combination stereogram of cleat stanchion of the present utility model unit and horizontal gangboard;

Fig. 6 is the combination section of cleat stanchion of the present utility model unit and horizontal gangboard;

Fig. 7 is an embodiment section diagrammatic sketch of the present utility model.

The specific embodiment

Below in conjunction with accompanying drawing specific embodiment of the utility model is illustrated:

See also Fig. 2, shown in Figure 3, this kind extension ladder of the present utility model, its extension ladder 1 can be and folds shape, or be and open shape, it comprises most cleat stanchions unit 2, horizontal gangboard 3 and locked mechanism 4, is the ladder of joint joint promotion when it launch to use, then respectively save when folding the cleat stanchion unit each other different tube diameters setting and can repeatedly put mutually.

See also Fig. 4 A, 4B, shown in Figure 5, this cleat stanchion unit 2 is made up of hollow ladder pipe 21 and connection external member 23; Each hollow ladder pipe 21, its position high caliber of healing is littler, its upper end is formed with hemispherical tenon 212 and hole 213, hypomere then is provided with and fastens hole 214, each outside sheathed adapter sleeve spare 23 in hollow ladder pipe 21 upper ends, it is involutory mutually that hemispherical tenon 212 correspondence positions of connection external member 23 and hollow ladder pipe 21 are provided with hole 222, and its inner and outer pipes wall surface also is concaved with mucus runner 225, and inside and outside mucus runner 225 communicates with a through hole 227.

This connects external member 23, and having one can be for the socketed pipe 231 that coats, and is located on the footpath direction of socketed pipe and is two upright fishplate bars 232 that are parallel to each other; The tube wall of socketed pipe 231 is provided with relative hole 233 for injecting adhesive agent, and its pipe periphery also is provided with clamping hole 234 between fishplate bar 232.

Its locked mechanism 4 as shown in the figure, comprises a stop 41, a locking bar 42, a spring 43 and a driving lever 44; This stop 41, its front end both sides are flange 411, can be for snapping in the inside groove 38 that connects external member, its inner rear end has one can be for the spring groove 412 that is installed with spring 43, make an end contact spring 43 of locking bar 42, in addition end is then over against the clamping hole 234 that connects external member for it, and locking bar 42 can be stirred by driving lever 44 after going into for driving lever 44 forks with the axle 421 in its stage casing, described driving lever 44 is that the axis 441 with its lower end is sheathed with axle 421, and control locking bar 42 moves.

This horizontal gangboard 3 is sheathed on locked mechanism 4 outsides, and its side is formed with through hole 31 and stretches out for driving lever 44.

In addition, hollow ladder pipe 21 lower ends are provided with Buffer Unit 5, and this Buffer Unit 5 slightly is the cover tubular, and its upper end mat trip 51 colludes the default button hole 52 that is fixed in terraced pipe, its hypomere periphery then is provided with elasticity seal 53 and keeps friction when inside contacts for itself and ladder are managed, and folds to reduce noise and buffering.As shown in Figure 6, its inside is provided with a glued membrane 54 again, and glued membrane 54 surfaces form porose, and thus, when Buffer Unit 5 moved up and down along with terraced pipe, air can be through this hole turnover, to promote buffering effect.

After assembling was finished, as shown in the figure, hollow ladder pipe was because of there is the setting of Buffer Unit 5 and elasticity seal 53 bottom, can increase and the contacting to cushion and rub of outer ladder pipe inner tubal wall, and reached the purpose that cushions lifting; 23 of set connection external members in ladder pipe upper end can by mucus runner 225 for inject adhesive agent itself and ladder pipe 21 are reached closely cohere fixing, so safety and firmness very after overall package is finished; Set locked mechanism 4 not only makes things convenient for control also because it is coated on horizontal gangboard 3 inside fully, and can avoid the foreign object infiltration to cause damage.

When stretch using, the hypomere of inner hollow ladder pipe fastens 214 groups in hole and establishes to pass to the locking bar 42 of outside hollow ladder pipe it is located, and when locking bar 42 withdraws from, inner hollow ladder pipe promptly can descend automatically and fold.

Below for ease of the explanation, represent with different figure numbers.When folding, as shown in Figure 7, driving lever 62 outer dialling with the horizontal gangboard 61 of first floor, drive locking bar 63 withdraw from clamping hole and second layer ladder pipe fasten the hole after, second layer ladder pipe 64 is promptly held the horizontal gangboard 65 of the related second layer and is dropped downwards because of losing to keep off, other can be finished whole ladder pipes and gangboard fast and fold to push-down stack by that analogy.

It should be noted that at last: above embodiment only in order to the explanation the utility model and and the described technical scheme of unrestricted the utility model; Therefore, although this manual has been described in detail the utility model with reference to each above-mentioned embodiment,, those of ordinary skill in the art should be appreciated that still and can make amendment or be equal to replacement the utility model; And all do not break away from the technical scheme and the improvement thereof of the spirit and scope of utility model, and it all should be encompassed in the middle of the claim scope of the present utility model.

Claims

1. extension ladder, comprise most cleat stanchions unit, horizontal gangboard and locked mechanism, described cleat stanchion unit is composed in series by the different hollow ladder pipe of several calibers, and each hollow ladder pipe upper end also is arranged with the connection external member, and connection external member one end is then organized and established locked mechanism and horizontal gangboard; It is characterized in that: described locked mechanism, comprise stop, locking bar, spring and driving lever, wherein, stop front end both sides are that flange can be for blocking mutually with the inside groove that is connected external member, its inner rear end has one can be for the spring groove that is installed with spring, spring is held the contact locking bar in addition, and the locking bar stage casing is that axle pitches for driving lever that it moves forward and backward into control.

2. extension ladder according to claim 1 is characterized in that: wherein hollow ladder pipe and connection external member are for sticking together combination.

3. extension ladder according to claim 1 is characterized in that: described connection external member is provided with the mucus runner in inside and outside ring wall and makes with hollow ladder pipe and cohere for injecting adhesive agent.

4. extension ladder according to claim 1 is characterized in that: the inside and outside mucus runner of described connection external member is to communicate.

5. extension ladder according to claim 1 is characterized in that: the local paragraph complex of described ladder pipe upper end becomes to have the hemispherical tenon, and is connected external member in the mutual embedding in the set hole of relative position.

6. extension ladder according to claim 1, it is characterized in that: described connection external member, having one can be for the socketed pipe that coats, and to be located at socket caliber direction be the upright fishplate bar that is parallel to each other, its pipe periphery is provided with clamping hole again between parallel fishplate bar, can penetrate for an end of locking bar.

7. extension ladder according to claim 1, it is characterized in that: described hollow ladder pipe lower end is provided with Buffer Unit again, this Buffer Unit slightly is the cover tubular, the button hole that is fixed in terraced pipe is colluded by trip in its upper end, and its hypomere periphery is provided with the elasticity seal that keeps friction when it is contacted with the ladder pipe is inner.

8. extension ladder according to claim 7 is characterized in that: described Buffer Unit inside is provided with a glued membrane again, and the glued membrane surface is formed with can be for the hole of air turnover.