CN202970422U

CN202970422U - Folding ladder

Info

Publication number: CN202970422U
Application number: CN 201220698228
Authority: CN
Inventors: 王振冠; 吴坚
Original assignee: SHENZHEN CANYOU BARRIER-FREE SERVICE Co Ltd
Current assignee: SHENZHEN CANYOU BARRIER-FREE SERVICE Co Ltd
Priority date: 2012-12-17
Filing date: 2012-12-17
Publication date: 2013-06-05
Anticipated expiration: 2022-12-17

Abstract

The utility model discloses a folding ladder which comprises a fixing seat, two groups of folding connecting mechanisms mounted at the upper end of the fixing seat, and a top pedal, a middle pedal and a bottom pedal, wherein two ends of the top pedal, the middle pedal and the bottom pedal are sequentially arranged on the folding connecting mechanisms in parallel to each other; and two ends of the top pedal are hinged on the fixing seat. The fixing seat, the top pedal, the middle pedal and the bottom pedal are connected together by utilizing the folding connecting mechanisms, so that the ladder can be folded when being not used, i.e., the volume of the ladder is reduced greatly; and the ladder is convenient to carry and transport and is reliable in structure. In addition, a handle component is arranged on the ladder; and the spacing height among the top pedal, the middle pedal and the bottom pedal can be optimized by utilizing the folding connecting mechanisms, so that the ladder is more reasonable in design and more convenient to use.

Description

A kind of folded ladder

Technical field

The utility model relates to a kind of ladder, relates in particular to a kind of folded ladder.

Background technology

In the prior art, folded ladder is after expansion, and the spacing between pedal is all changeless, and generally between 182 millimeters to 183 millimeters, this is for the elderly and individuals with disabilities for spacing, and riser height is a little a bit high, has potential safety hazard during use; The armrest system of some folded ladder is to be erected in addition on folded ladder, shines into like this and carries inconvenience, complex operation during use; Some folded ladder carry the stow-away arm rest device, but it adopts single braced structures, in use easily cause both sides handrail discontinuity, give the uncomfortable sensation of people.

The utility model content

Technical problem to be solved in the utility model is: a kind of folded ladder is provided, during expansion, greatly optimized the spacing between pedal, can greatly dwindle the volume of ladder after folding, be convenient for carrying and transport, and reliable in structure, easy to use.

For solving the problems of the technologies described above, the utility model proposes a kind of folded ladder, comprise holder, be arranged on two groups of folding connection mechanisms of holder upper end and two ends and be parallel to each other successively and be laid in the top pedal on folding connection mechanism, middle pedal, bottom pedal, pedal two ends, described top are hinged on holder.

Further, described folding connection mechanism comprises head rod, the second connecting rod, the 3rd connecting rod, bearing bar, the first end of bearing bar is hinged on holder, the first end of head rod is hinged on the pedal of top, in the middle of the second end of head rod is hinged on, on pedal, head rod and bearing bar mutually intersect and are hinged; The first end of the second connecting rod is hinged on the pedal of bottom, and in the middle of the second connecting rod, the place is hinged with middle pedal; The second end of bearing bar and the second end of the second connecting rod are hinged; The two ends of the 3rd connecting rod are hinged on respectively on bottom pedal and middle pedal.

Further, also be provided with armrest assembly, described armrest assembly comprises fixed bar, contiguous block, cross bar, the first column, the second column, the lower end of the first column is fixedly installed on holder, the upper end of the first column and the left end of cross bar are hinged, and the lower end of the left end of fixed bar and the first column is hinged, and the lower end of the right-hand member of fixed bar and the second column is hinged, the upper end bending of the second column forms a bending part, and the right-hand member of cross bar and the end face of bending part are hinged; Contiguous block is fixedly mounted on fixed bar, and contiguous block is provided with rectangular through hole, and the hinged end of bearing bar and the second connecting rod is slidably installed in described rectangular through hole.

Further, described the first column and fixed bar are provided with retaining mechanism, and fixed bar is fixed together by retaining mechanism and the first column after the rotation of the lower end of the first column is closed up.

Further, described retaining mechanism comprises the snap fit that is arranged on the first column and the card arm that is arranged on fixed bar, and fixed bar is fixed together with the first column with card arm fastening is rear by snap fit after the rotation of the lower end of the first column is closed up.

Further, be provided with cylinder assembly between cross bar and the first column.

Further, the spacing between spacing, middle pedal and bottom pedal after folded ladder is launched between top pedal and middle pedal is all between 172 millimeters to 175 millimeters.

Further, be provided with spacing bracing piece between described two bearing bars.

Further, described the second column is provided with guard shield.

Further, described retaining mechanism also comprises unlocking handle, and unlocking handle one end is arranged on fixed bar by rotating shaft, and unlocking handle is provided with the projection with the mutual butt of snap fit; Hook pivot is located on the first column, and when unlocking handle is rotated around the shaft, projection promotion snap fit rotatablely moves.

Technique scheme has following beneficial effect at least: the utility model is by adopting folding connection mechanism that holder, top pedal, middle pedal and bottom pedal are linked together, realize that ladder can stored collapsed when not using, greatly dwindle the volume of ladder, be convenient for carrying and transport, during expansion, greatly optimized the spacing between pedal, and reliable in structure; Also be provided with armrest assembly on ladder, and between top pedal, middle pedal and three sections pedals of bottom pedal, the spacing height can be optimized by folding connection mechanism, it is more reasonable to design, and uses convenient.

Description of drawings

Structural representation one when Fig. 1 is the expansion of the utility model folded ladder.

Lateral view when Fig. 2 is the expansion of the utility model folded ladder.

Structural representation two when Fig. 3 is the expansion of the utility model folded ladder.

Structural representation three when Fig. 4 is the expansion of the utility model folded ladder.

Structural representation when Fig. 5 is the contraction of the utility model folded ladder.

The specific embodiment

Need to prove, in the situation that do not conflict, embodiment and the feature in embodiment in the application can make up mutually.Below in conjunction with accompanying drawing, the utility model is described further.

As shown in Figures 1 to 4, the folded ladder of the utility model embodiment comprises holder 1, top pedal 2, middle pedal 3, bottom pedal 4 and folding connection mechanism.

Holder 1 is that the cavity body structure that surrounds formation after being welded to each other between base plate 11, front side board 12 and fixed head group 13 is arranged.With reference to figure 3, fixed head group 13 has two groups, be separately positioned on the both sides of base plate 11, each group comprises the first fixed head 131, the second fixed head 132, the 3rd fixed head 133, and the two ends of top pedal 2 are hinged on the upper end between the 3rd fixed head 133 in two groups of fixed head groups 13.

Folding connection mechanism has two groups, is separately positioned between the both sides of the both sides of holder 1 and top pedal 2 and bottom pedal 4, and it comprises head rod 51, the second connecting rod 52, the 3rd connecting rod 53 and bearing bar 54.Wherein, the ladder deployed condition is as reference data in Fig. 1, bearing bar 54 mainly plays the load-bearing effect, the left end of bearing bar 54 is hinged on the bottom of the 3rd fixed head 133, this moment, bearing bar 54 was parallel with top pedal 2, the upper end of head rod 51 is hinged on the right-hand member of top pedal 2, the left end of pedal 3 in the middle of the lower end of head rod 51 is hinged on, and head rod 51 mutually intersects with 54 one-tenth of bearing bars " ten " font and is hinged; The lower end of the second connecting rod 52 is hinged on the left end of bottom pedal 4, the middle place of the second connecting rod 52 mutually intersects with 3 one-tenth, middle pedal " ten " font and is hinged, and the upper end of the right-hand member of bearing bar 54 and the second connecting rod 52 is hinged by rotating shaft 100; The two ends of the 3rd connecting rod 53 are hinged on respectively between bottom pedal 4 and middle pedal 3, and the 3rd connecting rod 53 and the second connecting rod 52 are parallel to each other.therefore, bottom pedal 4 left end portion, the second connecting rod 52 end portions, middle pedal 3 right end portion and the 3rd connecting rod 53 consist of the first parallelogram, the second connecting rod 52 upper parts, middle pedal 3 left end portion, the left end portion of the end portion of head rod 51 and bearing bar 54 consists of the second parallelogram, the upper part of head rod 51, top pedal 2, the right end portion of fixed head group 13 and bearing bar 54 consists of the 3rd parallelogram, top pedal 2, middle pedal 3, bottom pedal 4 relies on three parallelogram to realize launching and contractile function, can be by improving head rod 51, the second connecting rod 52, the 3rd connecting rod 53, the length of bearing bar 54 and the link spacing on pedal realize top pedal 2, the optimization of spacing height between

middle pedal

3 and 4 three sections pedals of bottom pedal, after optimizing, the spacing after folded ladder is launched between top pedal 2 and middle pedal 3, spacing between middle pedal 3 and bottom pedal 4 is all between 172 millimeters to 175 millimeters.

Armrest assembly has two groups, be separately positioned on the both sides of folded ladder, it comprises fixed bar 6, contiguous block 7, cross bar 81, the first column 83, the second column 84, the lower end of the first column 83 is fixedly installed between the first fixed head 131 and the second fixed head 132, the left end of the upper end of the first column 83 and cross bar 81 is hinged, the lower end of the left end of fixed bar 6 and the first column 83 is hinged, the lower end of the right-hand member of fixed bar 6 and the second column 84 is hinged, the upper end bending of the second column 84 forms a bending part 82, and the end face of the right-hand member of cross bar 81 and bending part 82 is hinged; Contiguous block 7 is fixedly mounted on fixed bar 6, and contiguous block 7 is provided with rectangular through hole 71, and the hinged end of bearing bar 54 and the second connecting rod 52 is slidably installed in described rectangular through hole 71.Therefore, cross bar 81, the first column 83, the second column 84 consist of Siping City's row quadrangle, realize collapsible function, and the fixing predetermined angular that mutually intersects to form of the extended line of the circle center line connecting of circular hole 72 of the center line by adjusting rectangular through hole 71 and two, can change the gradient of cross bar 81, in use feel more comfortable.

Also be provided with two fixedly circular holes 72 on contiguous block 7, the center line of rectangular through hole 71 and two the fixedly extended line of the circle center line connecting of circular hole 72 are crossed as predetermined angular mutually, and rotating shaft 100 is slidably installed in described rectangular through hole 71, and contiguous block 7 is by fixedly circular hole 72 and screw are fixedly mounted on fixed bar 6.

The second column 84 is provided with guard shield 841; not only increased the pretective acreage of the second column 84, and after ladder is folding, as shown in Figure 5; the first column 83 and the second column 84 just fall in guard shield, play the effect of protection the first column 83 and the second column 84.

cylinder assembly 200 is Pneumatic power support levers, the lower end of Pneumatic power support lever is hinged on the lower end of the first column 83, the upper end of Pneumatic power support lever is hinged on the place, centre position of cross bar 81, ladder upon deployment at this moment, the first column 83, cylinder assembly 200, the left end portion of cross bar 81 forms triangle, this spline structure is more firm, Pneumatic power support lever provides support power after ladder launches, and provide restoring force in the process that ladder shrinks, the weight that adds other parts due to pedal is too large, can require great effort very much only according to manpower, so Pneumatic power support lever provides restoring force, effectively overcome defects, realize that convergent force is even, shrink the advantages such as laborsaving, and in use the both sides handrail is also stressed even, in use safer.

As shown in Figure 5, when ladder was folding, fixed bar 6 was fixed together by retaining mechanism 9 and the first column 83 after the rotation of the lower end of the first column 83 is closed up.Particularly, retaining mechanism 9 comprises that the snap fit 91 that is hubbed on the first column 83, an end are arranged on card arm 92, unlocking handle 93 on fixed bar 6 by rotating shaft 94, unlocking handle 93 be provided with the rectangular through hole 932 of circular arc and with the mutual butt projection 931 of snap fit 91, the card arm 92 be applied in the rectangular through hole 932 of circular arc.After ladder folded, fixed bar 6 was fixed together with the first column 83 with card arm 92 fastenings are rear by snap fit 91 after holder 1 rotation is closed up; When needing to launch ladder, an end of stirring unlocking handle 93 makes its 94 rotations around the shaft, driving projection 931 promotion snap fits 91 this moment rotatablely moves, until snap fit 91 breaks away from card arm 92, retaining mechanism 9 releases this moment are in this process, the rectangular through hole 932 of circular arc plays spacing guiding function, also be respectively equipped with spring on snap fit 91 and card arm 92, by the effect of spring force, improved the Reliability of Microprocessor of retaining mechanism 9.

As another kind of embodiment, above-mentioned cylinder assembly 200 also can replace with hydraulic package, such as adopting the hydraulic supporting strut; The 3rd connecting rod 53 also can be made curved shape, and above embodiment can improve the functional performance of folded ladder, improves reliability of structure.

The upper end of the right-hand member of bearing bar 54 and the second connecting rod 52 is hinged by rotating shaft 100, and rotating shaft 100 is slidably installed in rectangular through hole 71 on described contiguous block 7, realize synchronousing working of armrest assembly and pedal assembly, can adjust the gradient of cross bar 81 and the second cross bar 82 by the connection angle that changes contiguous block 7, until obtain perfect condition, make the user more comfortable.

Spacing bracing piece 300 is hinged between two bearing bars 54, can prevent that ladder folding connection mechanism when folding or opening from producing swing, makes ladder structure more firm.

The utility model has been optimized the connection dimension of head rod 51, the second connecting rod 52, the 3rd connecting rod 53 and bearing bar 54, and the spacing between top pedal 2, middle pedal 3, bottom pedal 4 is optimized, and is more suitable for the elderly and individuals with disabilities and uses; The fixing predetermined angular that mutually intersects to form of the extended line of the circle center line connecting of circular hole 72 of center line by adjusting rectangular through hole 71 and two, be optimized the gradient of armrest assembly simultaneously.

The above is the specific embodiment of the present utility model; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the utility model principle; can also make some improvements and modifications, these improvements and modifications also are considered as protection domain of the present utility model.

Claims

1. folded ladder, it is characterized in that, comprise holder (1), be arranged on two groups of folding connection mechanisms of holder (1) upper end and two ends and be parallel to each other successively and be laid in the top pedal (2) on folding connection mechanism, middle pedal (3), bottom pedal (4), described top pedal (2) two ends are hinged on holder (1).

2. folded ladder as claimed in claim 1, it is characterized in that, described folding connection mechanism comprises head rod (51), the second connecting rod (52), the 3rd connecting rod (53), bearing bar (54), the first end of bearing bar (54) is hinged on holder (1), the first end of head rod (51) is hinged on top pedal (2), the second end of head rod (51) is hinged on middle pedal (3), head rod (51) and bearing bar (54) mutually intersect and are hinged, the first end of the second connecting rod (52) is hinged on bottom pedal (4), and in the middle of the second connecting rod (52), the place is hinged with middle pedal (3), the second end of the second end of bearing bar (54) and the second connecting rod (52) is hinged, the two ends of the 3rd connecting rod (53) are hinged on respectively on bottom pedal (4) and middle pedal (3).

3. folded ladder as claimed in claim 2, it is characterized in that, also be provided with armrest assembly, described armrest assembly comprises fixed bar (6), contiguous block (7), cross bar (81), the first column (83), the second column (84), the lower end of the first column (83) is fixedly installed on holder (1), the left end of the upper end of the first column (83) and cross bar (81) is hinged, the lower end of the left end of fixed bar (6) and the first column (83) is hinged, the lower end of the right-hand member of fixed bar (6) and the second column (84) is hinged, the upper end bending of the second column (84) forms a bending part (82), the end face of the right-hand member of cross bar (81) and bending part (82) is hinged, contiguous block (7) is fixedly mounted on fixed bar (6), and contiguous block (7) is provided with rectangular through hole (71), and the hinged end of bearing bar (54) and the second connecting rod (52) is slidably installed in described rectangular through hole (71).

4. folded ladder as claimed in claim 3, it is characterized in that, described the first column (83) and fixed bar (6) are provided with retaining mechanism (9), and fixed bar (6) is fixed together by retaining mechanism (9) and the first column (83) after the rotation of the lower end of the first column (83) is closed up.

5. folded ladder as claimed in claim 4, it is characterized in that, described retaining mechanism (9) comprises the snap fit (91) that is arranged on the first column (83) and is arranged on card arm (92) on fixed bar (6), fixed bar (6) around the lower end of the first column (83) rotate fasten by snap fit (91) and card arm (92) after closing up after and the first column (83) be fixed together.

6. folded ladder as claimed in claim 5, is characterized in that, is provided with cylinder assembly (200) between cross bar (81) and the first column (83).

7. folded ladder as claimed in claim 1, it is characterized in that, the spacing between spacing, middle pedal (3) and bottom pedal (4) after folded ladder is launched between top pedal (2) and middle pedal (3) is all between 172 millimeters to 175 millimeters.

8. folded ladder as claimed in claim 2, is characterized in that, is provided with spacing bracing piece (300) between described two bearing bars (54).

9. folded ladder as claimed in claim 3, is characterized in that, described the second column (84) is provided with guard shield (841).

10. folded ladder as claimed in claim 5, it is characterized in that, described retaining mechanism (9) also comprises unlocking handle (93), unlocking handle (93) one ends are arranged on fixed bar (6) by rotating shaft (94), and unlocking handle (93) is provided with the projection (931) with the mutual butt of snap fit (91); Snap fit (91) is hubbed on the first column (83), unlocking handle (93) when rotating around the shaft projection (931) promote snap fit (91) and rotatablely move.