CN2674056Y - Structure of telescopic ladder - Google Patents
Structure of telescopic ladder Download PDFInfo
- Publication number
- CN2674056Y CN2674056Y CN 200320126415 CN200320126415U CN2674056Y CN 2674056 Y CN2674056 Y CN 2674056Y CN 200320126415 CN200320126415 CN 200320126415 CN 200320126415 U CN200320126415 U CN 200320126415U CN 2674056 Y CN2674056 Y CN 2674056Y
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- CN
- China
- Prior art keywords
- ladder
- pipe
- hollow
- pullover
- hole
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
The utility model discloses the structure of a telescopic ladder, which is aimed to provide a structure of telescopic ladder which is formed by a cuff, hollow ladder pipes and connecting sleeve pieces fastened and fixed to each other, and then stuck together. The structure of the telescopic ladder is stable, and not easy to get loose. The connecting sleeve pieces are coated with a transversal ladder board to avoid the damage of corrosion, and the stretching assemblage is foldable, portable, and collectable. Besides, the structure of the telescopic ladder is with a better security and a longer service life. The utility model comprises a plurality of ladder post units, the transversal ladder board, and a locking mechanism. Each section of the ladder post units consists of the hollow ladder pipe, the cuff, and the connecting sleeve piece. The higher the position of each hollow ladder pipe, the smaller the pipe diameter. The hollow ladder pipes are telescopic sleeved with each other. The locking mechanism which is provided horizontally is connected with the connecting sleeve pieces of the ladder post units, and coated by the transversal ladder board. The cuff, the hollow ladder pipes and connecting sleeve pieces are fastened and fixed to each other, and then stuck together.
Description
Technical field
The utility model is about a kind of extension ladder, more specifically says so about a kind of extension ladder structure.
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, is provided with the pedal of the suitable distance of being separated by therebetween, is the A font during use for use.
The ladder that this is traditional because its overall volume is quite big, carries very inconveniently, and folding and unfolding also need take very large space, and lacks and use elasticity.
Summary of the invention
Technical problem to be solved in the utility model is the shortcoming that overcomes prior art, a kind of pullover and hollow ladder pipe is provided and is connected and be bonded together again after external member connects and fixes mutually, package assembly is stable to be difficult for getting loose, connecting external member has the coating of horizontal gangboard to avoid corrosion to damage, and is easy to fold, carry, collect, stretch, assemble and have the extension ladder structure of better safety.
Extension ladder structure of the present utility model, be achieved by following technical proposals, a kind of extension ladder structure, comprise a plurality of cleat stanchions unit, horizontal gangboard and locking mechanism, it is characterized in that: described cleat stanchion unit is to be composed in series by the different hollow ladder pipe of a plurality of calibers, wherein each hollow ladder is managed the pullover and connection external member of the sheathed annular in upper end, and this connection external member one end also connects the locking mechanism and the horizontal gangboard of setting in horizontal direction.
A kind of extension ladder structure as previously discussed is characterized in that: described annular is pullover, the terraced pipe of hollow and connect external member and be bonded together.A kind of extension ladder structure as previously discussed, it is characterized in that: described annular is pullover, is respectively equipped with at inside and outside ring wall, is used to inject cementing agent and makes the terraced pipe of itself and hollow and be connected the mucus flow channel that external member is bonded together.A kind of extension ladder structure as previously discussed is characterized in that: the pullover inside and outside mucus flow channel of described annular communicates.A kind of extension ladder structure as previously discussed is characterized in that: the partial section of described hollow ladder pipe upper end is formed with the annular snap ditch, and the internal projecting ring that this annular snap ditch and annular pullover relative position place are provided with is chimeric mutually.A kind of extension ladder structure as previously discussed is characterized in that: the partial section of described hollow ladder pipe upper end is formed with the hemispherical tenon again, and this hemispherical tenon is chimeric mutually with the pullover hole that is provided with at the relative position place of annular.A kind of extension ladder structure as previously discussed is characterized in that: the pullover shrinkage joint that is provided with again of described annular.A kind of extension ladder structure as previously discussed, it is characterized in that: described connection external member has one for coating the pullover socketed pipe of annular and being arranged on the upright fishplate bar that is parallel to each other with socketed pipe caliber direction, it manages periphery, is provided with again between parallel fishplate bar and connects and fixes the hole.A kind of extension ladder structure as previously discussed, it is characterized in that: described locking mechanism, comprise a stop, one locking bar, one spring and a driving lever, wherein, stop front end both sides are for colluding end, for blocking mutually with the upright fishplate bar that is connected external member, its inner rear end has one for the spring groove that is installed with spring, and be provided with the locking bar that withstands spring with an end, the locking bar stage casing for for driving lever pitch into axle, be provided with and connect and fix the hole, this connects and fixes after the hole is meant that this driving lever is pivotally arranged on the stop intended groove with the axis of its lower end, inserts the hole that connects and fixes that connects external member when stirring locking bar and moving forward.A kind of extension ladder structure as previously discussed, it is characterized in that: described hollow ladder pipe lower end is provided with buffer element again, this buffer element is the cover tubular, its upper end borrows trip to collude tightly in the button hole of hollow ladder pipe, its hypomere is peripheral and be provided with maintenance friction when making it with inner contact of hollow ladder pipe, to reduce the elasticity seal that noise and buffering fold.A kind of extension ladder structure as previously discussed is characterized in that: described buffer element inside is provided with a glued membrane again, and is porose above the glued membrane, and this hole is meant the room of air in the hole enters glued membrane when buffer element moves up and down, and promotes the hole of buffering effect.
Extension ladder structure of the present utility model has following beneficial effect fruit compared with prior art:
1, the ladder of the pullover and hollow in the extension ladder structure of the present utility model is managed and is connected the package assembly that is bonded together again after external member connects and fixes mutually, makes this extension ladder Stability Analysis of Structures be difficult for getting loose, and has better safety;
2, connecting external member has the coating of horizontal gangboard to avoid corrosion to damage;
3, be easy to fold, carry, collect, stretch, assemble.
Description of drawings
Fig. 1 is the stereogram of habitual ladder;
Fig. 2 folds stereogram for the utility model;
Fig. 3 launches to use stereogram for the utility model;
Fig. 4 is the three-dimensional exploded view of cleat stanchion of the present utility model unit and horizontal gangboard;
Fig. 5 is the combination stereogram and the part sectioned view 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 sectional drawing of the present utility model.
The specific embodiment
The utility model will be further described below in conjunction with accompanying drawing.
This kind extension ladder structure of the present utility model, as shown in Figure 2, this extension ladder 1 is in collapse state, as shown in Figure 3, this extension ladder 1 is in opening, extension ladder 1 comprises a plurality of cleat stanchions unit 2, horizontal gangboard 3 and locking mechanism 4, is the ladder of joint joint promotion when it launches to use, and is stacked mutually by means of being provided with of each mutual different tube diameters in joint cleat stanchion unit when folding.
As shown in Figure 4, this cleat stanchion unit 2, form by hollow ladder pipe 21, pullover 22 and connection external member 23, this pullover 22 is annular shape, is to be enclosed within ladder pipe outside, 21 upper end, the sheathed again connection external member 23 in pullover 22 outsides, the hollow ladder pipe 21 of each cleat stanchion unit, its position high caliber of healing is littler, and the partial section of hollow ladder pipe 21 upper ends is formed with annular snap ditch 211, hemispherical tenon 212 and hole 213, and hypomere fastens hole 214; Pullover 22 are provided with internal projecting ring 221, protruding grain 222 and shrinkage joint 223 mutual fits with its epimere portion relative position place, pullover 22 bottoms are provided with the outer annular edge 224 of outside protrusion, its inside and outside tube wall respectively is concaved with a mucus flow channel 225,226, inside and outside mucus flow channel 225,226 communicates with a through hole 227, ring limit 228 (as shown in Figure 6) in pullover 22 tops are provided with.
This connects external member 23, and having one can be for coating pullover socketed pipe 231, and is located at the upright fishplate bar 232 that the caliber direction with socketed pipe is parallel to each other; The tube wall of this socketed pipe 231 is provided with the hole 233 that is relatively fixed, and after it is inserted in pullover 22, except borrowing cementing agent and pullover 22 tight bond, and can lock the screw locking; It manages periphery, is provided with to connect and fix hole 234 between parallel fishplate bar.
This locking mechanism 4 as shown in Figure 4, and with reference to figure 6, 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 for colluding end 411, can supply and the fishplate bar 232 mutual clampings that are connected external member 23, its inner rear end has one can be for the spring groove (see figure 5) that is installed with spring 43, locking bar 42 is with an end contact spring 43, and the other end connects and fixes hole 234, the axle 421 of its stage casing for going into for driving lever 44 forks over against what connect external member, driving lever is pivotally arranged on stop intended groove 412 with the axis 441 of its lower end, stirs locking bar 42 and moves forward and backward.
Simultaneously with reference to Fig. 5, behind the locking mechanism 4 installing location, horizontal gangboard 3 is sheathed on locking mechanism 4 outsides, and borrows screw to be locked to the upright fishplate bar 232 that connects external member, and laterally gangboard 3 lower ends there is through hole 31 to stretch out for driving lever 44 lower ends again.
As shown in the figure, after assembling is finished, be provided with buffer element 5 and elasticity seal 53, can increase with the buffering that contacts of outer ladder pipe inner tubal wall and rub, reach the purpose of buffering lifting because the hollow ladder is managed the bottom; Ladder pipe upper end set pullover 22, and the mucus flow channel 225,226 of outer tube wall setting within it, for the perfusion cementing agent, make itself and ladder pipe 21 and be connected external member 23 tight bond, so safety and firmness after the overall package, promote the safe in utilization and set locking mechanism 4 of horizontal gangboard 3, make it be entirely horizontal gangboard 3 and coat, have convenient control and cause the function of damaging with avoiding the foreign object infiltration.
When stretch using, the hypomere of inner hollow ladder pipe fastens the locking bar 42 that hole 214 is arranged on outside hollow ladder pipe and passes the location, and after locking bar 42 withdrawed from, this hollow ladder pipe 21 promptly can descend and fold.
For ease of explanation, represent with different figure numbers below.When folding, as shown in Figure 7, driving lever 62 is stretched out in the horizontal gangboard of first floor 61 lower ends to clockwise rotate, drive locking bar 63 withdraw from connect and fix 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, when the horizontal gangboard 65 of the second layer drop down onto make its lower end driving lever 66 touch the horizontal gangboard 61 of first floor after, driving lever 66 clockwise rotated because of stressed being, driving its inner locking bar 67 withdraws from and connects and fixes the hole, 68 and the 3rd layers of horizontal gangboard 69 of the 3rd layer of ladder pipe fall smoothly, by that analogy, can finish whole ladder pipes and gangboard fast piles up downwards and folds.
In sum as can be known, this kind extension ladder structure of the present utility model, have really promote safe in utilization, receive and adorn effect fast easy to use, and can improve the shortcoming of effective ladder, and its not public use, meet the regulation of Patent Law, earnestly ask approval.
Need to prove that above-described is the preferable specific embodiment of the utility model, in the scope that does not exceed spirit of the present utility model and design, those of ordinary skills can be used for various modifications and change, and all belong to protection domain of the present utility model.
Claims (11)
1, a kind of extension ladder structure, comprise a plurality of cleat stanchions unit, horizontal gangboard and locking mechanism, it is characterized in that: described cleat stanchion unit is to be composed in series by the different hollow ladder pipe of a plurality of calibers, wherein each hollow ladder is managed the pullover and connection external member of the sheathed annular in upper end, and this connection external member one end also connects the locking mechanism and the horizontal gangboard of setting in horizontal direction.
2, extension ladder structure as claimed in claim 1 is characterized in that: described annular is pullover, the terraced pipe of hollow and connect external member and be bonded together.
3, extension ladder structure as claimed in claim 1, it is characterized in that: described annular is pullover, is respectively equipped with at inside and outside ring wall to be used to inject cementing agent, makes the terraced pipe of itself and hollow and is connected the mucus flow channel that external member is bonded together.
4, extension ladder structure as claimed in claim 1 is characterized in that: the pullover inside and outside mucus flow channel of described annular communicates.
5, extension ladder structure as claimed in claim 1 is characterized in that: the partial section of described hollow ladder pipe upper end is formed with the annular snap ditch again, and the internal projecting ring that this annular snap ditch and annular pullover relative position place are provided with is chimeric mutually.
6, extension ladder structure as claimed in claim 1 is characterized in that: the partial section of described hollow ladder pipe upper end is formed with the hemispherical tenon again, and this hemispherical tenon is chimeric mutually with the pullover hole that is provided with at the relative position place of annular.
7, extension ladder structure as claimed in claim 1 is characterized in that: the pullover shrinkage joint that is provided with again of described annular.
8, extension ladder structure as claimed in claim 1, it is characterized in that: described connection external member has one for coating the pullover socketed pipe of annular and being arranged on the upright fishplate bar that is parallel to each other with socketed pipe caliber direction, it manages periphery, is provided with again between parallel fishplate bar and connects and fixes the hole.
9, extension ladder structure as claimed in claim 1, it is characterized in that: described locking mechanism, comprise a stop, one locking bar, one spring and a driving lever, wherein, stop front end both sides are for colluding end, for blocking mutually with the upright fishplate bar that is connected external member, its inner rear end has one for the spring groove that is installed with spring, and be provided with the locking bar that withstands spring with an end, the locking bar stage casing for for driving lever pitch into axle, be provided with and connect and fix the hole, this connects and fixes after the hole is meant that driving lever is pivotally arranged on the stop intended groove with the axis of its lower end, inserts the hole that connects and fixes that connects external member when stirring locking bar and moving forward.
10, extension ladder structure as claimed in claim 1, it is characterized in that: described hollow ladder pipe lower end is provided with buffer element again, this buffer element is the cover tubular, its upper end borrows trip to collude tightly in the button hole of hollow ladder pipe, its hypomere is peripheral and be provided with maintenance friction when making it with inner contact of hollow ladder pipe, to reduce the elasticity seal that noise and buffering fold.
11, extension ladder structure as claimed in claim 10, it is characterized in that: described buffer element inside is provided with a glued membrane again, porose above the glued membrane, this hole is meant the room of air in the hole enters glued membrane when buffer element moves up and down, and promotes the hole of buffering effect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320126415 CN2674056Y (en) | 2003-12-03 | 2003-12-03 | Structure of telescopic ladder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320126415 CN2674056Y (en) | 2003-12-03 | 2003-12-03 | Structure of telescopic ladder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2674056Y true CN2674056Y (en) | 2005-01-26 |
Family
ID=34476879
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200320126415 Expired - Lifetime CN2674056Y (en) | 2003-12-03 | 2003-12-03 | Structure of telescopic ladder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2674056Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1816312A2 (en) * | 2006-02-07 | 2007-08-08 | Mei-Hua Chen | Securing device for extending ladder |
| CN102696347A (en) * | 2012-04-18 | 2012-10-03 | 林智勇 | Farmland banana picking device |
| CN103967404A (en) * | 2013-02-04 | 2014-08-06 | 昆山元达精密机电工业有限公司 | Telescopic ladder with anti-slide-out and anti-shaking functions |
| CN104806160A (en) * | 2015-02-27 | 2015-07-29 | 徐浩钟 | Special ladder for pruning in garden |
| EP3048238A1 (en) * | 2008-03-07 | 2016-07-27 | Wing Enterprises, Inc. | Ladders, ladder components and related methods |
| US10487576B2 (en) | 2016-03-04 | 2019-11-26 | Wing Enterprises, Incorporated | Adjustment mechanisms, ladders incorporating same and related methods |
-
2003
- 2003-12-03 CN CN 200320126415 patent/CN2674056Y/en not_active Expired - Lifetime
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1816312A3 (en) * | 2006-02-07 | 2009-03-18 | Mei-Hua Chen | Securing device for extending ladder |
| EP1816312A2 (en) * | 2006-02-07 | 2007-08-08 | Mei-Hua Chen | Securing device for extending ladder |
| US9784033B2 (en) | 2008-03-07 | 2017-10-10 | Wing Enterprises, Incorporated | Ladders, ladder components and related methods |
| US11788351B2 (en) | 2008-03-07 | 2023-10-17 | Little Giant Ladder Systems, Llc | Ladders, ladder components and related methods |
| US10767416B2 (en) | 2008-03-07 | 2020-09-08 | Wing Enterprises, Incorporated | Ladders, ladder components and related methods |
| EP3048238A1 (en) * | 2008-03-07 | 2016-07-27 | Wing Enterprises, Inc. | Ladders, ladder components and related methods |
| CN102696347A (en) * | 2012-04-18 | 2012-10-03 | 林智勇 | Farmland banana picking device |
| CN103967404B (en) * | 2013-02-04 | 2016-08-10 | 昆山元达精密机电工业有限公司 | There is anti-skidding and the extension ladder of anti-spacious dynamic function |
| CN103967404A (en) * | 2013-02-04 | 2014-08-06 | 昆山元达精密机电工业有限公司 | Telescopic ladder with anti-slide-out and anti-shaking functions |
| CN104806160B (en) * | 2015-02-27 | 2016-08-17 | 黄宝生 | Prune gardens special-purpose ladder |
| CN104806160A (en) * | 2015-02-27 | 2015-07-29 | 徐浩钟 | Special ladder for pruning in garden |
| US10487576B2 (en) | 2016-03-04 | 2019-11-26 | Wing Enterprises, Incorporated | Adjustment mechanisms, ladders incorporating same and related methods |
| US11421475B2 (en) | 2016-03-04 | 2022-08-23 | Little Giant Ladder Systems, Llc | Adjustment mechanisms, ladders incorporating same and related methods |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20131203 Granted publication date: 20050126 |