CN207739935U

CN207739935U - Folding ladder

Info

Publication number: CN207739935U
Application number: CN201721703264.9U
Authority: CN
Inventors: 陈星宇
Original assignee: Individual
Current assignee: Individual
Priority date: 2017-12-10
Filing date: 2017-12-10
Publication date: 2018-08-17
Anticipated expiration: 2027-12-10

Abstract

The utility model is related to a kind of ladder, specifically a kind of folding ladder, including interspersed structure and several folding units；Interspersed structure is made of several bars and several drawstrings, is connected with each other by drawstring between bar；Fold unit be made of 2 standpipes and several cross bars, two neighboring foldings unit is hinged in 2 riser ends, articulated shaft be located at standpipe outside and it is parallel with cross bar, riser end has the notch of recess in articulated shaft side；Interspersed structure is interspersed in the standpipe of several folding units being hinged.The folding ladder may act as vertical ladder can also be used as double ladder use, simple in structure, reasonable stress, for ease of maintenaince.The utility model has used several identical folding units and several identical bars, and the joint number of folding ladder is increased and decreased convenient for repacking.

Description

Folding ladder

Technical field

The utility model is related to a kind of ladder, specifically a kind of folding ladder.

Background technology

Ladder is the common tool in people's production, life, but the natural length of ladder determines that its is inconvenient to carry, transport Inconvenience leaves unused and is also required to occupy larger space when storing.

To solve the above-mentioned problems, occur a variety of extension ladders in the market, such as：

A kind of extension ladder of the disclosure of the invention of application number 201610011668.5, it is in extension ladder embedding successively along its length Cover that multiple structures are identical, terraced unit of size gradation, in any two neighboring terraced unit, the terraced leg of upper ladder is socketed in lower ladder Terraced leg in after it is separably attached by the identical locking system of structure；Locking system includes lock pin, locking spring, locking Guide, switch button, switch spring and switch enclosure, respectively with two locking pin connections, lock pin is horizontal for the both ends of locking spring The pin hole sequentially passed through on ladder and lower ladder side wall stretches out, and switch spring, the connection of switch spring one end are housed in switch enclosure To lower ladder lateral wall and it is sleeved on the extension of lock pin；

Although the extension ladder can be good at solving the above problems, but the biography of the vertical holding power of its two neighboring terraced unit It passs and mainly falls on the lock pin, therefore stress point is excessively concentrated, and lock pin institute stress is shearing, makes it in higher intensity There are limitations in terms of stress.

Invention content

The purpose of the utility model is to overcome defects existing for existing ladder or extension ladder, and providing one kind can fold A kind of folding ladder, the especially folding ladder are simple in structure in other words for the ladder used, reasonable stress, for ease of maintenaince.

Technical solution is used by the utility model realizes its purpose：

A kind of folding ladder, including interspersed structure and several folding units, it is characterised in that：Interspersed structure by several bars and Several drawstrings are constituted, and are connected with each other by drawstring between bar；Unit is folded to be made of 2 standpipes and several cross bars, it is two neighboring Fold unit be hinged in 2 riser ends, articulated shaft be located at standpipe outside and it is parallel with cross bar, riser end is in articulated shaft There is the notch of recess in side；Interspersed structure is interspersed in the standpipe of several folding units being hinged.

When bar is located at the corresponding riser interiors for folding unit, folding ladder can be folded, when folding, drawstring into In the notch for entering the recess of riser end；When bar under the pulling of drawstring pass through it is two neighboring fold unit hinged place, one When part is entered in next standpipe for folding unit, bar support folding ladder is not folded.

Preferably, the bar side is fluted, the tie point that the drawstring saves bar with upper one is located in groove, and And groove certain distance is stretched into, the cavity that bar groove is formed with standpipe inner wall is for accommodating drawstring.It can make to wear using this structure Bar is pierced by the part of corresponding standpipe and drawstring is detached without entering in next section of standpipe, so that some articulated shafts are by bar When support is not rotatable, other can not rotated by the articulated shaft that bar limits in a certain range, i.e., this method makes the folding Folded ladder it is different fold between units it is not foldable can be existed simultaneously with folding state, especially make the folding ladder can It plays an important role when being used as double ladder.

Preferably, the first segment bar of the interspersed structure is reducing bar, drawstring is connected to the smaller one end of diameter, directly The larger one end of diameter cannot enter the standpipe for folding unit, to play limit in the pulling range folded in unit to interting structure Effect.

It is easy to draw the handle held preferably, the drawstring of the last section bar end of the interspersed structure has.

Preferably, one end that the need of the interspersed structure penetrate the bar of adjacent cells is shunk, to reduce card resistance.

Preferably, the bar side of the interspersed structure is fluted；And if poling does not have a groove, bar and standpipe Cross section is the centrosymmetric image of non-circular prevents the notch of groove and standpipe to limit rotation of the bar in standpipe It does not correspond in position.

Preferably, the folding ladder is furnished with casing, for preventing the support force of ladder from acting on the last section bar, together When as ladder support leg.

In conclusion the utility model has the advantage of：

1. the utility model can fold, it is convenient for carrying, occupied space when storing of leaving unused is smaller；

2. the utility model is compared with the background art, structure is more reasonable in terms of stress, in realization equal height and by force Under conditions of degree, the material used is less, can save material, reduces production cost；

3. the utility model can fold at arbitrary hinged shaft, double ladder, especially two side lengths can be used as different Double ladder can use on the ground for having height difference；

4. the utility model is simple in structure, several identical folding units and several identical bars are used, convenient for changing Dress increases and decreases the joint number of folding ladder, easy to repair, is conveniently replaceable damage component.

Description of the drawings

Fig. 1 is the structure chart of the folded state of the utility model.

Fig. 2 is structure chart of the utility model as double ladder state.

Fig. 3 is schematic diagram of the utility model as vertical ladder state.

Fig. 4 is detail view of the utility model as vertical ladder state.

Fig. 5 is the folding cellular construction figure of the utility model.

Fig. 6 is the interspersed structural schematic diagram of the utility model.

Fig. 7 is the detail view of the interspersed structure of the utility model.

In figure：11, bar, 12, drawstring, 13, reducing bar, 14, handle, 15, groove, 21, notch, 22, articulated shaft, 23, standpipe, 24, cross bar, 31, casing.

Specific implementation mode

The utility model is described in further detail below in conjunction with the accompanying drawings and by embodiment, and following embodiment is pair The explanation of the utility model and the utility model is not limited to following embodiment.

The utility model is described by several folding units as shown in Figure 5 and two sets of interspersed structure compositions as shown in FIG. 6 It folds unit to be made of standpipe 23 and cross bar 24, be fixed to each other between cross bar and two standpipes, folding unit is as shown in Figures 1 to 4, phase Neighbour is hinged between folding unit in its two riser end, wherein two groups of articulated shafts 22 are located at folding unit two up and down Side, and it is parallel with cross bar, the notch 21 of drawstring is accommodated when neutral tube both ends are useful for folding respectively, notch is located at relatively The articulated shaft side answered；

The interspersed structure is made of several bars 11 and several drawstrings 12, wherein and first segment bar is reducing bar 13, Wherein, the end of the last section drawstring, which has, is easy to draw the handle 14 held, the side fluted 15 of bar 12 as shown in Figures 6 and 7 recessed Slot is for accommodating drawstring 12, and one end that bar is pulled is shunk, and often saves and is connected with each other by drawstring between bar, and drawstring with it is upper The tie point of one section bar is located in groove, and stretches into groove certain length；

Described two, which wear inserting structure, is respectively interposed in the both sides riser interiors for folding unit being hinged.

When the often section bar 11 is respectively positioned on corresponding 23 inside of standpipe for folding unit, every section of drawstring 12 is through respectively Between two sections standpipe, and two sections standpipe certain length is stretched into, as shown in Figure 1, at this point, each adjacent two is hinged Folding unit can rotate and fold around its articulated shaft 22, when folding, drawstring 12 enters the notches of upper and lower two sections standpipe In 21, to prevent drawstring from hindering to fold.

It, can be by pulling handle 14 to make interspersed structure relative to each section of standpipe 23 when the utility model is integrally straightened Movement, when the smaller one end of the diameter of reducing bar 13 is completely into first segment riser interiors, interspersed structure is limited；Such as figure Shown in 4, at this point, often section bar 11 penetrates next section standpipe certain length, it is hinged to make adjacent folding unit that can not surround Shaft rotation is dynamic, i.e., ladder can not be folded under this state.

As shown in Fig. 2, when this folding ladder is folded in certain two adjacent hinged place for folding unit, and other hinged places are not When folding, the corresponding drawstring 12 in the hinged place stretches out being partially separated for standpipe 23 with bar 11, at this point, this folding ladder can conduct Double ladder uses；And the bar end of the last section is cased with sleeve 31, sleeve avoids the last section from wearing as the support leg of ladder Bar stress.

When this folding ladder is only used as vertical ladder, and not as double ladder in use, a kind of structure of simplification may be used： To save the groove 15 of bar 11, each bar that saves is connect in its end with drawstring.

When this folding ladder need to regard double ladder simultaneously in use, being rotated in standpipe 23 to limit bar 11, make groove 15 is corresponding with notch 21 always, and the standpipe and bar of the centrosymmetric image that cross section is non-circular may be used, such as： Oval cross section.

Claims

1. a kind of folding ladder, including interspersed structure and several folding units, it is characterised in that：If interspersed structure by several bars and Dry drawing rope is constituted, and is connected with each other by drawstring between bar；It folds unit to be made of 2 standpipes and several cross bars, two neighboring folding Folded unit is hinged in 2 riser ends, and riser end has the notch of recess in articulated shaft side；If interspersed structure is interspersed in In the standpipe of the dry folding unit being hinged；When bar is located at the corresponding riser interiors for folding unit, folding ladder can To be folded, when folding, drawstring enters in the notch of the recess of riser end；When bar passes through adjacent two under the pulling of drawstring A hinged place for folding unit, when a part is entered in next standpipe for folding unit, bar support folding ladder is not folded.

2. a kind of folding ladder according to claim 1, it is characterised in that：The bar side is fluted, the drawstring with The tie point of upper section bar is located in groove, and stretches into groove certain distance.

3. a kind of folding ladder according to claim 1, it is characterised in that：First segment bar is reducing bar, drawstring connection In the smaller one end of diameter, the standpipe for folding unit cannot be entered by being relatively large in diameter one end.

4. a kind of folding ladder according to claim 1, it is characterised in that：The drawstring of the last section bar end, which has, to be easy to draw The handle held.

5. a kind of folding ladder according to claim 1 or 2, it is characterised in that：The bar need to penetrate the one of adjacent cells End is shunk, to reduce card resistance.

6. a kind of folding ladder according to claim 1, it is characterised in that：Bar side is fluted；And if poling is not recessed Slot, then the cross section of bar and standpipe is the centrosymmetric image of non-circular.