CN101566039A - Folding ladder - Google Patents
Folding ladder Download PDFInfo
- Publication number
- CN101566039A CN101566039A CNA2009100395880A CN200910039588A CN101566039A CN 101566039 A CN101566039 A CN 101566039A CN A2009100395880 A CNA2009100395880 A CN A2009100395880A CN 200910039588 A CN200910039588 A CN 200910039588A CN 101566039 A CN101566039 A CN 101566039A
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- CN
- China
- Prior art keywords
- cleat stanchion
- connector
- spring
- locking mechanism
- clamping ring
- Prior art date
- 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.)
- Pending
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- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06C—LADDERS
- E06C1/00—Ladders in general
- E06C1/02—Ladders in general with rigid longitudinal member or members
- E06C1/04—Ladders for resting against objects, e.g. walls poles, trees
- E06C1/08—Ladders for resting against objects, e.g. walls poles, trees multi-part
- E06C1/12—Ladders for resting against objects, e.g. walls poles, trees multi-part extensible, e.g. telescopic
- E06C1/125—Ladders for resting against objects, e.g. walls poles, trees multi-part extensible, e.g. telescopic with tubular longitudinal members nested within each other
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- Ladders (AREA)
Abstract
A folding ladder comprises a plurality of ladder posts, cross rods and connecting-locking mechanisms. The ladder posts are mutually sleeved for connection; and the connecting-locking mechanisms are provided with connecting rings and connecting parts which are integrated into a whole structure; the cross rods are respectively connected with the ladder posts on two sides through the connecting-locking mechanisms; the folding and unfolding among the ladder posts can be realized through the connecting-locking mechanisms, wherein the connecting-locking mechanisms comprise elastic hooks which comprise chocks and bosses; the bosses are movably connected with inner walls of the connecting rings and respectively project inwards; the chocks are connected between the bosses and the inner walls of the connecting rings in a demountable manner; the chocks are provided with projecting blocks; and outer walls of the connecting rings are provided with grooves corresponding to the projecting blocks. The folding ladder has the advantages of simple structure, convenient demounting manner, safe and reliable use, space-saving property, easy conveyance manner and the like.
Description
Technical field
The present invention relates to a kind of ladder, relate in particular to a kind of elastic hook that has, can conveniently connect extension ladder with the demolition cleat stanchion.
Background technology
At present, the cleat stanchion of general ladder and the mode that cross bar links together are a lot, for example two cleat stanchions and cross bar directly can be welded together, the mode by concavo-convex cooperation of perhaps cross bar being inserted in the cleat stanchion opening is fixed, or can be with cleat stanchion and cross bar by screw or dowel fixes.Yet, these modes all exist certain problem, as welding manner, though connect more firm, but in case after the welding two cleat stanchions and cross bar are separated, though adopt the mode of screw or dowel fixes thereby screw can be turned on demolition, use also extremely inconvenience, though and the demolition easily of concavo-convex fit system, but, the concavo-convex place of being connected breaks away from easily during use, causes accident, uses to be absolutely unsafe reliably.
Therefore, be badly in need of a kind of simple in structure, demolition convenience, and extension ladder safe in utilization, reliable.
Summary of the invention
The object of the present invention is to provide and a kind ofly can save parking space, be easy to carrying, and sound construction, demolition is the socket joint type extension ladder easily.
To achieve these goals, the invention provides a kind of extension ladder, comprise some cleat stanchions, cross bar and connection locking mechanism, socket mutually between the described cleat stanchion, described connection locking mechanism has clamping ring and connector, described connector and described clamping ring are integral structure, described cross bar is connected with the both sides cleat stanchion by described connection locking mechanism, fold or launch by described connection locking mechanism between the described cleat stanchion, wherein, described connection locking mechanism comprises elastic hook, described elastic hook comprises chock and boss, and described boss is movably connected on the inside wall of described clamping ring and is outstanding to the inside, and described chock is dismountable to be connected between the lateral wall of described boss and described clamping ring, described chock has projection, and the lateral wall of described clamping ring has and the corresponding groove of described projection.
Preferably, described connection locking mechanism also comprises the pushing-type attacker, described pushing-type attacker comprises securing rod, spring, spring housing, dial key and dial the key button, described group of key one end is built-in and be articulated in the accommodation chamber of described connector, the other end and described group of key button engagement connection, outside the described group of outstanding described accommodation chamber of key button, described securing rod middle part articulates with described group of key, described securing rod one end passes the lock hole of described connector and can stretch in the described clamping ring freely, the other end and described spring one end are inconsistent, the described spring other end and described spring housing are inconsistent, described spring is placed in the described spring housing, and described spring housing is fixed on connector one end relative with described clamping ring.Thereby utilizing described spring to promote described securing rod makes its described lock hole that passes described cleat stanchion can automatically lock cleat stanchion in use.
More specifically, described group of key comprises first leg, second leg and connector, what described first leg and described second leg were in the shape of the letter V is connected on the described connector, described connector and described connector articulate, the other end of first leg that is connected with described connector and described group of key button engagement connection, described second leg has sliding tray, and described securing rod middle part slidably is connected with described sliding tray.The described group of bond energy is transmitted to the thrust of described group of key button on the described securing rod, and described securing rod is moved along the direction of motion of described group of key button, and be simple in structure, easy to operate.
Preferably, also comprise feet, described feet comprises pin body and clutch component, described clutch component is built in the described cleat stanchion and with described pin body and fixes, described clutch component comprises sliding ring, spring, slider disc, Flywheel disc, bolt, sliding tray and screw, described slider disc is socketed in the described cleat stanchion, sliding tray and described slider disc that described screw passes described cleat stanchion are socketed on described sliding ring outside the described cleat stanchion versatilely, described spring one end and described slider disc are inconsistent, described slider disc is meshed with described Flywheel disc, described bolt passes described spring and fixedlys connected with described Flywheel disc, and the other end of spring and described bolt are inconsistent, and described Flywheel disc is fixed on the described pin body.Utilize described clutch component to make described pin physical efficiency, when using ladder, outwards launch described pin body and support described ladder, when depositing, rotate described pin body and make it inwardly to fold, save parking space around described cleat stanchion rotational.
Preferably, also comprise some limit assemblies, described limit assembly comprises stop collar and spacing ring, and it is inner that described stop collar is socketed on described cleat stanchion upper end, and described spacing ring is socketed on another cleat stanchion lower end outside adjacent with described cleat stanchion.Described limit assembly is to being placed in up restriction of adjacent cleat stanchion in the described cleat stanchion, and the concrete latched position that limits upper and lower cleat stanchion is convenient to described connection locking mechanism upper and lower cleat stanchion is locked accurately, and is simple and practical.
Preferably, also comprise some anti-skid pin, the socket and be fixed in the lower end of each cleat stanchion respectively of described anti-skid pin has anti-skid of several elasticity around the described anti-skid foot bottom, and described anti-skid one end outwards protrudes in the side of described anti-skid pin.During the socket in twos of upper and lower cleat stanchion, on the described anti-skid inside wall that contacts at down cleat stanchion, when ladder folded, the cleat stanchion release can make the cleat stanchion slip, thereby preventing that cleat stanchion from gliding rapidly suddenly because of release produces sharp impacts, causes the phenomenon of damaging.
The present invention compared with prior art, because extension ladder of the present invention utilizes described elastic hook, described boss in the described elastic hook can be fastened on the described cleat stanchion, described cleat stanchion is fixed with the described locking mechanism that is connected, and described chock make described boss be connected more firmly with described boss is inconsistent, difficult drop-off, simple in structure, safe and reliable, also have, described projection with can prevent that described chock from skidding off cooperating of described groove.This structure is demolition ladder easily also, and is simple in structure, and demolition is convenient, and safe in utilization.
Description of drawings
Fig. 1 is the schematic perspective view of extension ladder of the present invention.
Fig. 2 is the decomposing schematic representation of elastic hook in the extension ladder of the present invention.
Fig. 3 is the enlarged drawing of A part among Fig. 2.
Fig. 4 is the decomposing schematic representation of pushing-type attacker in the extension ladder of the present invention.
Fig. 5 connects the decomposing schematic representation that locking mechanism is connected with cross bar for extension ladder two of the present invention.
Fig. 6 is for connecting the structural representation of dialling key of locking mechanism in the extension ladder of the present invention.
Fig. 7 is the decomposing schematic representation of feet in the extension ladder of the present invention.
Fig. 8 is the wherein decomposing schematic representation of four-section ladder post of extension ladder of the present invention.
Fig. 9 is the structural representation of anti-skid pin in the extension ladder of the present invention.
Figure 10 is for connecting the decomposing schematic representation that locking mechanism is connected with cleat stanchion and cross bar.
Schematic perspective view when Figure 11 opens fully for extension ladder of the present invention.
Figure 12 is the structural representation of another extension ladder of the present invention.
The specific embodiment
As shown in Figures 1 and 2, a kind of extension ladder 100, comprise some cleat stanchions 1, cross bar 2 and connection locking mechanism 3, socket mutually between the described cleat stanchion, described connection locking mechanism 3 has clamping ring 31 and connector 32, described connector 32 is an integral structure with described clamping ring 31, described cross bar 2 is connected with both sides cleat stanchion 1 by described connection locking mechanism 3, fold or launch by described connection locking mechanism 3 between the described cleat stanchion, wherein, described connection locking mechanism 3 comprises elastic hook 33, described elastic hook 33 comprises chock 331 and boss 332, described boss 332 is movably connected on the inside wall of described clamping ring 31 and is outstanding to the inside, and in conjunction with shown in Figure 3, described boss 332 is one-body molded with described clamping ring 31, and it forms one U-shaped slit 31b between two, described chock 331 is dismountable to be connected on the chock seat 31a of described clamping ring 31, and described chock 331 has projection 331a, and the lateral wall of described clamping ring 31 has the corresponding groove 331b with described projection 331a.
See also Fig. 4 and Fig. 5, preferably, described connection locking mechanism 3 also comprises pushing-type attacker 34, described pushing-type attacker 34 comprises securing rod 341, spring 342, spring housing 343, dial key 344 and dial key button 345, described group of key 344 1 end are built-in and be articulated in the accommodation chamber 32a of described connector 32, the other end and described group of key button 345 engagement connections, outside the described group of key button 345 outstanding described accommodation chamber 32a, described securing rod 341 middle parts and described group of key 344 articulate, described securing rod 341 1 ends pass the lock hole 32b of described connector 32 and can stretch into freely in the described clamping ring 31, the other end and described spring 342 1 ends are inconsistent, described spring 342 other ends and described spring housing 343 are inconsistent, described spring 342 is placed in the described spring housing 343, and described spring housing 343 is fixed on connector 32 1 ends relative with described clamping ring 31.Thereby utilizing described spring 342 to promote described securing rod 341 makes its described fixing hole 11 that passes described cleat stanchion 1 can automatically lock cleat stanchion 1 in use.
In conjunction with shown in Figure 6, more specifically, described group of key 344 comprises the first leg 344a, the second leg 344b and connector 344c, what described first leg 344a and the described second leg 344b were in the shape of the letter V is connected on the described connector 344c, described connector 344c and described connector 32 articulate, the other end of the first leg 344a that is connected with described connector 344c and described group of key button 345 engagement connections, the described second leg 344b has sliding tray 344b1, and described securing rod 341 middle parts slidably are connected with described sliding tray 344b1.Described group of key 344 can be transmitted to the thrust of described group of key button 345 on the described securing rod 341, and described securing rod 341 is moved along the direction of motion of described group of key button 345, and be simple in structure, easy to operate.
As shown in Figure 7, preferably, also comprise feet 4, described feet 4 comprises pin body 41 and clutch component 42, described clutch component 42 is built in the described cleat stanchion 1 and with described pin body 41 and fixes, described clutch component 42 comprises sliding ring 42a, spring 42b, slider disc 42c, Flywheel disc 42d, bolt 42e, sliding tray 42g and screw 42f, described slider disc 42c is socketed in the described cleat stanchion 1, sliding tray 42g and described slider disc 42c that described screw 42f passes described cleat stanchion 1 are socketed on described sliding ring 42 outside the described cleat stanchion 1 versatilely, described spring 42b one end and described slider disc 42c are inconsistent, described slider disc 42c is meshed with described Flywheel disc 42d, described bolt 42e passes described spring 42b and fixedlys connected with described Flywheel disc 42d, and the other end of spring 42b and described bolt 42e are inconsistent, and described Flywheel disc 42d is fixed on the described pin body 41.Utilize described clutch component 42 that described pin body 41 can outwards be launched described pin body 41 and support described ladder around described cleat stanchion rotational when using ladder, when depositing, rotate described pin body 41 and make it inwardly to fold, save parking space.
See also Fig. 8 again, preferably, also comprise some limit assemblies 5, described limit assembly comprises stop collar 51 and spacing ring 52, described stop collar 51 is socketed on inside, described cleat stanchion 1 upper end, and described spacing ring 52 is socketed on another cleat stanchion lower end outside adjacent with described cleat stanchion 1.5 pairs of described limit assemblies are placed in up restriction of adjacent cleat stanchion in the described cleat stanchion 1, and the concrete latched position that limits upper and lower cleat stanchion is convenient to 3 pairs of upper and lower cleat stanchions of described connection locking mechanism and locks accurately, and are simple and practical.
As shown in Figure 9, preferably, also comprise some anti-skid pin 6, the socket and be fixed in the lower end of each cleat stanchion respectively of described anti-skid pin 6, have several elasticity anti-skid 61 around described anti-skid pin 6 bottoms, described anti-skid 61 1 end outwards protrudes in the side of described anti-skid pin 6.During the socket in twos of upper and lower cleat stanchion, on described anti-skid 61 inside wall that contacts at down cleat stanchion, when ladder folded, the cleat stanchion release can make the cleat stanchion slip, thereby preventing that cleat stanchion from gliding rapidly suddenly because of release produces sharp impacts, causes the phenomenon of damaging.
Be described in detail below in conjunction with the operating principle of accompanying drawing extension ladder:
As shown in figure 10, the mutual socket of two adjacent cleat stanchions, described cleat stanchion 1 upper end is provided with and described boss 332 corresponding connecting holes 12, when connecting, described cleat stanchion 1 passes described clamping ring 31, and described boss 332 is fastened in the described connecting hole 12, then described chock 331 is fixed on the chock seat 31a in described clamping ring 31 outsides, again described connector 32 is fixedlyed connected with ladder cross bar 2, thereby described cleat stanchion 1, cross bar 2 are linked together.The lower end of the upper end of described cleat stanchion and the cleat stanchion that is adjacent all has a fixing hole 11, described fixing hole 11 is corresponding with the lock hole 32b of described connector 32, when launching extension ladder, arbitrary joint cleat stanchion directly upwards stretches, when being stretched to certain distance, that cleat stanchion can not be continued is up thereby the top of described spacing ring 52 contacts at the lower end of described stop collar 51, limited the position of cleat stanchion, meanwhile, described fixing hole 11 aligns with described lock hole 32b, because the elastic force effect of described spring 342, described spring 342 promotes described securing rod 341, and described securing rod 341 passes described lock hole 32b and fixing hole 11 locks described cleat stanchion 1.Then, with upwards pulling of described sliding ring 42a, described sliding ring 42a drives described slider disc 42c and moves up, and then compress described spring 42b, described slider disc 42c leaves described Flywheel disc 42d, then described pin body 41 is rotated 180 degree around the cleat stanchion central axis, decontrol described sliding ring 42a again, because the elastic force effect of spring 42b, described slider disc 42c moves down, described slider disc 42c and described Flywheel disc 42d engagement can not be rotated described pin body 41, thereby fixing described pin body 41 repeats above-mentioned all the other pin bodies that launch respectively and gets final product.When needs are adjusted the height of ladder, can stretch all the other cleat stanchions, at this moment, ladder is opened fully, can use, and Figure 11 is the structural representation of ladder when opening fully.When folding extension ladder, promote described group of key button 345, described group of key button 345 drives described group of key 344 and rotates along pin 346, thereby promote the described spring 342 of described securing rod 341 compressions, make described securing rod 341 withdraw from the fixing hole 11 of described cleat stanchion 1, at this moment, promote described cleat stanchion, described anti-skid 61 and the conflict of cleat stanchion inside wall of described anti-skid pin 6, the slow descending contraction of cleat stanchion has folded up to ladder.Schematic perspective view when Figure 12 is applied to another ladder for described elastic hook 33 and described pushing-type attacker 34.
Compared with prior art, because extension ladder of the present invention utilizes described elastic hook 33, described boss 332 in the described elastic hook 33 can be fastened on the described cleat stanchion 1, make described cleat stanchion 1 and described to be connected locking mechanism 3 fixing, make described boss 332 be connected more firmly and described chock 331 and described boss 332 are inconsistent, difficult drop-off, simple in structure, safe and reliable, also have, described projection 331a with can prevent that described chock 331 from skidding off cooperating of described groove 331b.This structure is demolition ladder easily also, and is simple in structure, and demolition is convenient, and safe in utilization.Whole ladder can greatly be contracted in together when not using, and saves a large amount of parking spaces and convenient in carrying.
Cleat stanchion 1, securing rod 341, spring housings 343 that extension ladder of the present invention 100 is involved and dial the size of key 344 and mounting method is well known to those of ordinary skill in the art no longer are described in detail at this.
Above disclosed only is preferred embodiments of the present invention, can not limit the present invention's interest field certainly with this, and therefore the equivalent variations of being done according to the present patent application claim still belongs to the scope that the present invention is contained.
Claims (6)
1. extension ladder, comprise some cleat stanchions, cross bar and connection locking mechanism, socket mutually between the described cleat stanchion, described connection locking mechanism has clamping ring and connector, described connector and described clamping ring are integral structure, described cross bar is connected with the both sides cleat stanchion by described connection locking mechanism, fold or launch by described connection locking mechanism between the described cleat stanchion, it is characterized in that: described connection locking mechanism comprises elastic hook, described elastic hook comprises chock and boss, described boss is movably connected on the inside wall of described clamping ring and is outstanding to the inside, described chock is dismountable to be connected between the lateral wall of described boss and described clamping ring, described chock has projection, and the lateral wall of described clamping ring has and the corresponding groove of described projection.
2. extension ladder as claimed in claim 1, it is characterized in that: described connection locking mechanism also comprises the pushing-type attacker, described pushing-type attacker comprises securing rod, spring, spring housing, dial key and dial the key button, described group of key one end is built-in and be articulated in the accommodation chamber of described connector, the other end and described group of key button engagement connection, outside the described group of outstanding described accommodation chamber of key button, described securing rod middle part articulates with described group of key, described securing rod one end passes the lock hole of described connector and can stretch in the described clamping ring freely, the other end and described spring one end are inconsistent, the described spring other end and described spring housing are inconsistent, described spring is placed in the described spring housing, and described spring housing is fixed on connector one end relative with described clamping ring.
3. extension ladder as claimed in claim 2, it is characterized in that: described group of key comprises first leg, second leg and connector, what described first leg and described second leg were in the shape of the letter V is connected on the described connector, described connector and described connector articulate, the other end of first leg that is connected with described connector and described group of key button engagement connection, described second leg has sliding tray, and described securing rod middle part slidably is connected with described sliding tray.
4. extension ladder as claimed in claim 1, it is characterized in that: also comprise feet, described feet comprises pin body and clutch component, described clutch component is built in the described cleat stanchion and with described pin body and fixes, described clutch component comprises sliding ring, spring, slider disc, Flywheel disc, bolt, sliding tray and screw, described slider disc is socketed in the described cleat stanchion, sliding tray and described slider disc that described screw passes described cleat stanchion are socketed on described sliding ring outside the described cleat stanchion versatilely, described spring one end and described slider disc are inconsistent, described slider disc is meshed with described Flywheel disc, described bolt passes described spring and fixedlys connected with described Flywheel disc, and the other end of spring and described bolt are inconsistent, and described Flywheel disc is fixed on the described pin body.
5. extension ladder as claimed in claim 1, it is characterized in that: also comprise some limit assemblies, described limit assembly comprises stop collar and spacing ring, and it is inner that described stop collar is socketed on described cleat stanchion upper end, and described spacing ring is socketed on another cleat stanchion lower end outside adjacent with described cleat stanchion.
6. extension ladder as claimed in claim 1, it is characterized in that: also comprise some anti-skid pin, the socket and be fixed in the lower end of each cleat stanchion respectively of described anti-skid pin has anti-skid of several elasticity around the described anti-skid foot bottom, and described anti-skid one end outwards protrudes in the side of described anti-skid pin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100395880A CN101566039A (en) | 2009-05-20 | 2009-05-20 | Folding ladder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100395880A CN101566039A (en) | 2009-05-20 | 2009-05-20 | Folding ladder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101566039A true CN101566039A (en) | 2009-10-28 |
Family
ID=41282382
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2009100395880A Pending CN101566039A (en) | 2009-05-20 | 2009-05-20 | Folding ladder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101566039A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102696347A (en) * | 2012-04-18 | 2012-10-03 | 林智勇 | Farmland banana picking device |
| CN104806161A (en) * | 2015-04-17 | 2015-07-29 | 佛山市顺德区万怡家居用品有限公司 | Folding mechanism for extension ladder |
| CN109403843A (en) * | 2018-11-30 | 2019-03-01 | 南安市淇凯工业设计有限公司 | A kind of framework vertical support structure changes the power equipment maintaining ladder of triangle center of gravity |
| JP2019517632A (en) * | 2016-06-09 | 2019-06-24 | テレタワー．コム リミテッド | Retractable forceps with retractable stabilizing bar |
| CN110344747A (en) * | 2014-08-18 | 2019-10-18 | 兰普控股私人有限公司 | Telescopic ladder assembly |
| CN114482497A (en) * | 2022-03-04 | 2022-05-13 | 中科建工集团有限公司 | Outer wall construction removes slide rail device |
| WO2022100204A1 (en) * | 2020-11-12 | 2022-05-19 | 青岛海尔洗衣机有限公司 | Bedding drying device |
| FR3121166A1 (en) * | 2021-03-25 | 2022-09-30 | Cdh Group | Height access device such as platform with stabilizers and telescopic legs |
-
2009
- 2009-05-20 CN CNA2009100395880A patent/CN101566039A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102696347A (en) * | 2012-04-18 | 2012-10-03 | 林智勇 | Farmland banana picking device |
| CN110344747A (en) * | 2014-08-18 | 2019-10-18 | 兰普控股私人有限公司 | Telescopic ladder assembly |
| CN104806161A (en) * | 2015-04-17 | 2015-07-29 | 佛山市顺德区万怡家居用品有限公司 | Folding mechanism for extension ladder |
| JP2019517632A (en) * | 2016-06-09 | 2019-06-24 | テレタワー．コム リミテッド | Retractable forceps with retractable stabilizing bar |
| CN109403843A (en) * | 2018-11-30 | 2019-03-01 | 南安市淇凯工业设计有限公司 | A kind of framework vertical support structure changes the power equipment maintaining ladder of triangle center of gravity |
| WO2022100204A1 (en) * | 2020-11-12 | 2022-05-19 | 青岛海尔洗衣机有限公司 | Bedding drying device |
| FR3121166A1 (en) * | 2021-03-25 | 2022-09-30 | Cdh Group | Height access device such as platform with stabilizers and telescopic legs |
| CN114482497A (en) * | 2022-03-04 | 2022-05-13 | 中科建工集团有限公司 | Outer wall construction removes slide rail device |
| CN114482497B (en) * | 2022-03-04 | 2023-09-15 | 中科建工集团有限公司 | Movable sliding rail device for outer wall construction |
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