CN200958365Y - Stably telescopic ladder - Google Patents
Stably telescopic ladder Download PDFInfo
- Publication number
- CN200958365Y CN200958365Y CN 200620127669 CN200620127669U CN200958365Y CN 200958365 Y CN200958365 Y CN 200958365Y CN 200620127669 CN200620127669 CN 200620127669 CN 200620127669 U CN200620127669 U CN 200620127669U CN 200958365 Y CN200958365 Y CN 200958365Y
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- CN
- China
- Prior art keywords
- ladder
- section
- bar
- piston
- utility
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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 - Fee Related
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Abstract
An extension ladder with smooth folding and belongs to ladder technical field, and used for solving the problem of smooth folding of the extension ladder. The utility model composes mutually slipping connected ladder sections, and each of the ladder section is composed of two ladder bars and a cross bar connected with the two ladder bars. The ladder bar is a hollow structure, and an upper ladder bar inserts in a hole of a lower ladder bar. After modification, except the bottom ladder section, each ladder bar of the ladder sections is fixed with a piston, which is fitted with the bore clearance of the next ladder bar section at the bottom. The utility model Provide each bottom of the ladder bars with the piston which is fitted with the internal chamber clearance of the next ladder bar section, and when folding the ladder, an air pressure is formed by the piston and the internal chamber of the ladder section to provide the ladder section mild and smooth folding under the effect of the gravity and the air pressure, so as to avoid the injury to fingers due to the rapid descent of the ladder section. Moreover, the utility model skillfully designs a spanner of each ladder section locating pin to carry out linkage effect during the ladder folding process, and each ladder section can automatically folded only by operate the ladder section locating pin spanner at the lowest end. The utility model has the characteristics of free and stable folding, convenient operation and reliable usage etc.
Description
Technical field
The utility model relates to a kind of ladder, and particularly portable scalable ladder belongs to the ladder technical field.
Background technology
Ladder is the common tool of ascend operation, and especially for tradesmans such as electric installation and maintenance, the interior decoration instrument that is absolutely necessary, for the personnel of the operation of often going out, carry and the preserving type of ladder are crucial.At present a lot of families also all provide ladder for oneself, and it is not frequent use that family provides ladder for oneself, so hope can be collected with smaller volume.Based on the demand, can fold or flexible ladder is popular, carrying and collecting of the extension ladder of comparing is more convenient.Chinese patent 03236368 discloses a kind of extension ladder, and this ladder adopts the making principle of telescopic antenna, will put in order ladder and be decomposed into a plurality of section of ladder sleeves together, pulls out each section of ladder during use, and each section of ladder shrinks mutually when depositing or carrying, and uses very convenient to carry.But this design and other similar extension ladder all have following problem: 1. when ladder shrank, section of ladder was under action of gravity, and decrease speed is very fast, squeezed easily and hindered operator's finger; 2. each section of ladder need move complicated by the joint shrinkage operation.
Summary of the invention
The utility model is used to overcome the defective of prior art and provides a kind of piston that is provided with bottom each section of ladder to form air pressure, to shrink extension ladder stably.
The alleged problem of the utility model solves with following technical proposals:
A kind of contraction is extension ladder stably, constitute by the section of ladder that is slidingly connected mutually, each section of ladder is formed by connecting by two ladder sides and a stull, ladder side is a hollow-core construction, fly group inserts in the bed ladder group hole, its special feature is: except that the section of ladder of bottom, and the affixed piston 8 in ladder side 4 bottoms of each section of ladder, piston and next joint ladder side endoporus matched in clearance.
Above-mentioned contraction is extension ladder stably, is provided with joint 2 between described stull 3 and ladder side, is provided with locking device in the joint, and described locking device is made up of alignment pin 6, spring 7 and spanner 5, and spring presses alignment pin one end, and the spanner upper end connects alignment pin; The middle part is hinged with joint; The stull that shank is positioned at outside the stull and the corresponding bed ladder in position saves, each ladder side is provided with the locating hole 10 with the alignment pin coupling.
Above-mentioned contraction is extension ladder stably, and described each ladder side is provided with latch 9.
The utility model shrinks the crowded easily problem of hindering finger of collision at existing extension ladder to be improved, in each ladder side bottom piston is set, piston and ladder side inner chamber matched in clearance, piston and section of ladder inner chamber formed air pressure when ladder shrank, section of ladder is releived under gravity and gas pressure steadily shrink, avoid squeezing the wound finger soon because of the section of ladder decrease speed.In addition, ingenious each the section of ladder alignment pin spanner that designed of the utility model makes it play the interlock effect in the ladder contraction process, only need operate section of ladder alignment pin spanner bottom, and each section of ladder is shunk automatically.The utlity model has steady, easy to operate, the characteristics such as use is reliable, the collection that is easy to carry that act freely.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the structural representation (amplification) of locking device.
Each parts label is expressed as follows in the accompanying drawing: 1. section of ladder; 2. joint; 3. stull; 4. ladder side; 4-1. fly group; 4-2. bed ladder group; 5. spanner; 6. alignment pin; 7. spring; 8. piston; 9. latch; 10. locating hole.
The specific embodiment
Referring to Fig. 1, Fig. 2, the utility model is made of a plurality of section of ladders 1 that are slidingly connected mutually, each section of ladder is connected to form by two ladder sides 4 and a stull 3, ladder side is a hollow-core construction, a last joint ladder side 4-1 inserts in the hole of the 4-2 of bed ladder group, except that the section of ladder of bottom, the affixed piston 8 in the ladder side of each section of ladder bottom, piston and next joint ladder side endoporus matched in clearance.Be connected interference fit between ladder side and joint by joint 2 between stull 3 and ladder side.Reliably locate for making ladder draw back each section of ladder of back, except that the section of ladder of top, be provided with locking device in each joint, locking device is made up of alignment pin 6, spring 7 and spanner 5, and spring presses alignment pin one end, and spanner upper end sphere connects alignment pin; The middle part is hinged with joint; The stull that shank is positioned at outside the stull and the corresponding bed ladder in position saves, each ladder side is provided with the locating hole 10 with the alignment pin coupling.Section of ladder is deviate from when avoiding ladder to draw back, and each ladder side is provided with latch 9, but the stop pin end limited piston continues to move upward.
The utility model need draw back when using, begin to pull out by the top section of ladder, one holds the stull of fly joint, another holds the ladder side of bed ladder joint, slowly draws stull on firmly, till the locking device locking, carry out pulling out of next section of ladder again, all pull out up to ladder by that analogy, also can only pull out several section of ladders certainly according to using needs.The telescopic ladder period of the day from 11 p.m. to 1 a.m of finishing using, push two spanners of bottom section of ladder, then this section of ladder alignment pin interlock is return, a last section of ladder adjacent with the bottom section of ladder falls under action of gravity, because the ladder side bottom is provided with piston, piston and ladder side inner chamber matched in clearance, piston and ladder side inner chamber formed air pressure when ladder shrank, section of ladder is releived under gravity and air pressure double action steadily shrink, avoid squeezing the wound finger soon because of the section of ladder decrease speed.The section of ladder that falls is when the spanner of its locking device presses next section of ladder stull, and this section of ladder alignment pin interlock is return, and a last section of ladder that is adjacent falls automatically, all shrinks automatically up to all section of ladders by that analogy.If the constriction section of ladder can be selected the suitably section of ladder of height, with the hands push spanner, above all section of ladders of this section of ladder can be shunk.
Claims (3)
1. one kind is shunk extension ladder stably, constitute by the section of ladder that is slidingly connected mutually, each section of ladder is formed by connecting by two ladder sides and a stull, ladder side is a hollow-core construction, fly group inserts in the bed ladder group hole, it is characterized in that: except that the section of ladder of bottom, the ladder side of each section of ladder (4) bottom affixed piston (8), piston and next joint ladder side endoporus matched in clearance.
2. contraction according to claim 1 is extension ladder stably, it is characterized in that: be provided with joint (2) between described stull (3) and ladder side, be provided with locking device in the joint, described locking device is made up of alignment pin (6), spring (7) and spanner (5), spring presses alignment pin one end, and the spanner upper end connects alignment pin; The middle part is hinged with joint; The stull that shank is positioned at outside the stull and the corresponding bed ladder in position saves, each ladder side is provided with the locating hole (10) with the alignment pin coupling.
3. contraction according to claim 1 and 2 is extension ladder stably, it is characterized in that: described each ladder side is provided with latch (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620127669 CN200958365Y (en) | 2006-09-20 | 2006-09-20 | Stably telescopic ladder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620127669 CN200958365Y (en) | 2006-09-20 | 2006-09-20 | Stably telescopic ladder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200958365Y true CN200958365Y (en) | 2007-10-10 |
Family
ID=38785244
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620127669 Expired - Fee Related CN200958365Y (en) | 2006-09-20 | 2006-09-20 | Stably telescopic ladder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200958365Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102140872A (en) * | 2011-03-05 | 2011-08-03 | 宁波超腾照明电器有限公司 | Safety telescopic ladder capable of being automatically gathered in slow descending mode under action of air resistance |
| CN107956415A (en) * | 2017-10-30 | 2018-04-24 | 中车长春轨道客车股份有限公司 | A kind of telescopic Emergency Ladder |
-
2006
- 2006-09-20 CN CN 200620127669 patent/CN200958365Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102140872A (en) * | 2011-03-05 | 2011-08-03 | 宁波超腾照明电器有限公司 | Safety telescopic ladder capable of being automatically gathered in slow descending mode under action of air resistance |
| CN107956415A (en) * | 2017-10-30 | 2018-04-24 | 中车长春轨道客车股份有限公司 | A kind of telescopic Emergency Ladder |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20071010 Termination date: 20100920 |