CN108179974A

CN108179974A - A kind of folding ladder

Info

Publication number: CN108179974A
Application number: CN201810173459.XA
Authority: CN
Inventors: 李传聪
Original assignee: Individual
Current assignee: Individual
Priority date: 2018-03-02
Filing date: 2018-03-02
Publication date: 2018-06-19

Abstract

A kind of folding ladder, including monosymmetric ladder, per side ladder upper end is laterally fixed with rectangle end cap, the adjacent end side of two end caps is hinged by hinge, it is hingedly made of upper ladder and descending stair again per side ladder, upper ladder is connected with descending stair by the terraced leg of both sides square-tube type by several cross bars being mutually parallel to be formed, retaining mechanism is installed in the terraced leg of each descending stair, terraced leg lower part terraced each is equipped with hitch gear, symmetrical in the lower inside of each descending stair and be rotatably mounted drawing frame；Ladder can be with folding, and small easy to carry, storage after folding, the lock control devices of ladder ensure that ladder is reliable using process safety, the drawing frame adjustable ladders opening angle of lower part.

Description

A kind of folding ladder

Technical field

The present invention relates to ascending tool field, more particularly, to a kind of folding ladder.

Background technology

Double ladder is common ascending tool in work and life；It is still longer after double ladder is packed up, it stores and carries and is past Toward inconvenience.

Invention content

To solve the deficiencies in the prior art, the object of the present invention is to provide one kind can folding, it is smaller, safety more may be used It leans on, folding ladder easy to carry and store.

To realize the above-mentioned technical purpose, the technical solution adopted in the present invention is as follows：

A kind of folding ladder is laterally fixed with rectangle end cap, two ends including monosymmetric ladder, per side ladder upper end It covers adjacent end side to be hinged by hinge, be hingedly made of upper ladder and descending stair again per side ladder, the upper ladder and descending stair are by both sides The terraced leg of square-tube type connects composition by several cross bars for being mutually parallel, be equipped in the terraced leg of each descending stair retaining mechanism, Terraced terraced leg lower part is equipped with hitch gear each, symmetrical in the lower inside of each descending stair and be rotatably mounted drawing Frame.

The retaining mechanism includes the foot of ladder plate hinged with the terraced leg lower end of descending stair, in descending stair leg and one end and foot of ladder plate By hinge shaft be hinged the other end and lock tongue lower end by the hinged connecting rod of hinge shaft, be set with the guide block of lock tongue, guide block for cuboid and Centre is vertically arranged the hole of socket lock tongue, section side dimension is adapted with the terraced inboard leg size installed, guide block installation In the pipe of descending stair leg upper end, upper surface less than hook limit inferior movement position.

The hitch gear include the hook seat being fixedly mounted in terraced leg lower tube, mounted on hook seat side hook, Elastomer between hook and terraced leg；Hook seat intermediate arrangement has the hole being adapted with lock tongue, hook seat in hinge oncoming lane While be disposed with the slot of installation hook shaft, hook upper end be in the middle part of shaft rectangular plate body lower part be prominent hook portion, it is vertical Plate body face is installed with column button.

It is described that frame is drawn to be disposed with the side for being mounted on terraced leg including the parallel strip side in both sides, side one end Several crossbeams being mutually parallel vertically are fixedly connected between hole, two sides, the top of lateral orifices opposite direction is fixedly connected with and crossbeam The parallel and prominent end carriage for drawing frame face, crossbeam and end carriage section are directed toward lateral orifices, end carriage side and crossbeam for flute profile and opening Groove match.

The descending stair ladder leg top is disposed with the hook hole being adapted with hook portion in hook hook portion corresponding position.

Further, it is vertical in the hinge end side of end cap and left and right end side adjacent thereto in order to improve the intensity of end cap It is disposed with wing plate downwards.

Further, for convenient folding, the articulated position of upper ladder and descending stair ladder both sides outer end face, on terraced leg lower end With descending stair leg upper end.

In order to ensure that hook can be imported smoothly in the hook hole of descending stair leg, in descending stair leg upper edge hole, with linking up with inclined-plane Corresponding position is arranged as inside arcwall face or inclined-plane.

Compared with prior art, the present invention the progress and advantage that obtain are：Can with folding, small easy to carry, There are lock control devices, safe and reliable, the drawing frame adjustable ladders opening angle of lower part.

Description of the drawings

In order to illustrate the embodiments of the present invention more clearly, attached drawing needed in the embodiment will be done simply below It introduces, it should be apparent that, the accompanying drawings in the following description is only some embodiments of the present invention, for ordinary skill people For member, without creative efforts, other attached drawings are can also be obtained according to these attached drawings.

Fig. 1 is the folding schematic diagram of the present invention.

Fig. 2 is the expanded schematic diagram of the present invention.

Fig. 3 is the drawing frame schematic diagram of the present invention.

Fig. 4 is the locking device schematic diagram of the present invention.

Fig. 5 is the locking device of the present invention and terraced leg connection diagram.

Fig. 6 is the hooking device schematic diagram of the present invention.

Fig. 7 is the hook of the present invention and terraced leg connection diagram.

Fig. 8 is the end cap schematic diagram of the present invention.

Fig. 9 is the locking schematic diagram of the present invention.

It is denoted as in figure：

1st, descending stair leg；

2nd, upper terraced leg；

3rd, end cap；

4th, frame is drawn；41st, side；42nd, crossbeam；43rd, end carriage；

5th, retaining mechanism；51st, foot of ladder plate；52nd, connecting rod；53rd, lock tongue；54th, guide block；55th, hinge shaft；

6th, hitch gear；61st, hook seat；62nd, it links up with；63rd, elastomer.

Specific embodiment

With reference to the attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clear, complete Ground describes, it is clear that described embodiment is only part of the embodiment rather than whole embodiments of the present invention.Based on this hair Embodiment in bright, those of ordinary skill in the art without making creative work, the every other reality obtained Example is applied, belongs to the scope of the present invention.

Folding state of the attached drawing 1 for the present invention, unfolded state of the attached drawing 2 for the present invention；The process that the present invention is unfolded is as follows：

Descending stair leg 1 is pulled out, descending stair is separated around the upper ladder of connection with the hinge rotation of descending stair, with upper ladder, passes through gravity or hand Dynamic foot of ladder plate 51 makes foot of ladder plate 51 around the hinge of connection foot of ladder plate 51 and terraced leg 1 rotates, foot of ladder plate 51 drives and is mounted on foot of ladder plate Connecting rod 52 on 51 moves down, connecting rod 52 drives the guide hole along guide block 54 of lock tongue 53 to move down, and is rotated further foot of ladder plate 51 until connecting rod 52 arrival descending stair leg, 1 madial wall, lock tongue is entirely retracted in guide block 54 at this time, is rotated further descending stair, 62 outside inclined-planes of hook under Terraced 1 upper-end contact of leg, further hook 62 overcomes the effect of elastomer 63 to step into the mouth of hook of descending stair 1, in elastomer The mouth of hook top of descending stair 1 is hooked under the action of 63；

Foot of ladder plate 51 is toward back rotation, and the connecting rod 52 on foot of ladder plate 51 moves up, connecting rod 52 drives lock tongue 53 along guide block 54 on guide hole It moves, is rotated further in the hole of foot of ladder plate 51, the entrance hook of lock tongue 53 seat 61, at this point, lock tongue 53 coordinates with guide block 54 and hook seat 61, makes Upper ladder, descending stair are maintained at same plane, meanwhile, 53 side wall of lock tongue limits 62 movement of hook, and ensure that will not break off relations, and improve Safety；

Both sides ladder is separated outward, hinge rotation of two end caps 3 around interconnection of ladder upper end is separately fixed at, is formed Double ladder will draw frame 4 open, is overlapped, since 43 height of end carriage is beyond 4 liang of side planes of frame are drawn, the end carriage of drawing frame 4 above 43 and lower part the end carriage 43 of frame 4 is drawn to hook another crossbeam 42 for drawing frame 4 respectively, in this way, forming stable double ladder；

When needing to adjust ladder opening angle, coordinated by adjusting end carriage 43 and the crossbeam 42 of different location, can realize adjusting Ladder subtended angle function.

The process of the folding present invention is as follows：

Rotation foot of ladder plate 51 drives connecting rod 52, the guide hole along guide block 54 of lock tongue 53 to move down, and is rotated further foot of ladder plate 51 until connecting rod 52 arrival descending stair leg, 1 madial wall, lock tongue is entirely retracted in guide block 54 at this time, hook 62 is unlocked, by lower draw-bar 62 pinning, Pinning compresses elastomeric 63 simultaneously makes the inside rotation of hook 62 further diverge from descending stair leg 1, and rotation descending stair leg 1 closes foot of ladder plate again 51st, until complete folding.

Claims

1. a kind of folding ladder, which is characterized in that it include monosymmetric ladder, per side ladder upper end be laterally fixed with it is rectangular Shape end cap, the adjacent end side of two end caps are hinged by hinge, are hingedly made of upper ladder and descending stair again per side ladder, the upper ladder It is connected and formed by several cross bars being mutually parallel by the terraced leg of both sides square-tube type with descending stair, installed in the terraced leg of each descending stair There are retaining mechanism, terraced leg lower part terraced each that hitch gear is installed, and rotation symmetrical in the lower inside of each descending stair Ground is equipped with drawing frame.

2. a kind of folding ladder according to claim 1, which is characterized in that the retaining mechanism include under the terraced leg of descending stair Hold hinged foot of ladder plate, in descending stair leg and one end and foot of ladder plate is hinged the other end by hinge shaft and lock tongue lower end is cut with scissors by hinge shaft Connecting rod, the guide block of suit lock tongue connect, guide block are cuboid and the intermediate hole for being vertically arranged socket lock tongue, section side dimension It is adapted with the terraced inboard leg size installed, guide block is mounted in the pipe of descending stair leg upper end, upper surface is less than hook limit inferior Movement position.

3. a kind of folding ladder according to claim 1, which is characterized in that the hitch gear includes being fixedly mounted on ladder Hook seat in leg lower tube, mounted on the hook of hook seat side, the elastomer between hook and terraced leg；Cloth among hook seat Be equipped with the hole being adapted with lock tongue, hook seat be disposed in hinge opposite direction side installation hook shaft slot, hook upper end be shaft Middle part is that rectangular plate body lower part is that prominent hook portion, vertical panel dignity are installed with column button.

4. a kind of folding ladder according to claim 1, which is characterized in that described that frame is drawn to include the parallel strip side in both sides Side, side one end be disposed with for be mounted on terraced leg lateral orifices, be vertically fixedly connected with several be mutually parallel between two sides Crossbeam, lateral orifices opposite direction top be fixedly connected with parallel with the crossbeam and prominent end carriage for drawing frame face, crossbeam and end carriage break The groove match of lateral orifices, end carriage side and crossbeam is directed toward for flute profile and opening in face.

5. a kind of folding ladder according to claim 1, which is characterized in that the descending stair ladder leg top is corresponded in hook hook portion Location arrangements have the hook hole being adapted with hook portion.