CN2081242U

CN2081242U - folding ladder chair

Info

Publication number: CN2081242U
Application number: CN 90223338
Authority: CN
Inventors: 邵铭彬; 麦志深
Original assignee: SECOND LIGHT INDUSTRY HARDWARE FACTORY NANHAI COUNTY
Current assignee: SECOND LIGHT INDUSTRY HARDWARE FACTORY NANHAI COUNTY
Priority date: 1990-11-06
Filing date: 1990-11-06
Publication date: 1991-07-24

Abstract

The utility model discloses a folding ladder chair, which comprises front feet 1, rear feet 2, a movable seat 3, a backrest 26, a handrail tube and the like. The movable seat 3 is a crank rocker mechanism, which can make the front seat board and the back seat board fold into a chair seat or separate into two steps. A step 4 is arranged under the front foot 1, and another step 5 is arranged under the front foot 1. The ladder chair can be conveniently and rapidly changed into a chair, a ladder and a folded state without disassembly or recombination.

The utility model also has the advantages of simple and compact structure, beautiful appearance and good rigidity.

Description

Folding ladder-shaped chair

The utility model relates to the furniture technical field, particularly a kind of collapsible ladder chair.

Existing furniture is in the majority with the simple function person.As folding seat, has only the function of seat.Also have some multifunctional chairs to occur, this chair can be sat, can lean on, can couch, but can not be combined into ladder.Chinese patent application has been number for the patent application of 88218542.X discloses a kind of multifunctional ladder chair, it by the locus that hinge, latch change a few part basic booms of terraced chair promptly constitute seat, lean to chair, chaise longue, ladder etc.When desire should the ladder chair becomes ladder, cushion, handrail be taken off, each bar is drawn back be a horizontal plane, and connect hinge next door at each bar and plug the fixing ladder that forms of pin.This structure and mapping mode complexity, loaded down with trivial details need through mounting or dismounting, re-assembly reinforcing and just can be transformed into ladder.As can be seen, the ladder of this in-line has eight grades from this patent application document, and height should surpass 2M, so its integral rigidity is bad, is suspectable to its practical value.

The purpose of this utility model is to provide for the weak point that overcomes above-mentioned existence a kind of mutual conversion with chair, terraced function collapsible ladder chair rapidly.

The utility model is achieved in that this collapsible ladder chair is made of the forward foot in a step, the rear foot, movable seat, backrest, it is characterized in that it is a four-bar crank and rocker mechanism that hinged support is sat in the activity at the terraced chair forward foot in a step, rear foot middle part, it can become a plane chair, can also be transformed to upper and lower two layers of step; Near the activity face of sitting down a step is arranged, it is bearing on the forward foot in a step middle beam; Described forward foot in a step bottom also has a step.

Described movable its adjustable shelf of sitting is connected with the rear foot by hinges, be movably hinged by connecting rod between preceding seat metal frame and the recoil sheetmetal frame, forward and backward seat metal frame is connected with adjustable shelf by hinges respectively, and forward and backward seat is embedded in respectively in the forward and backward seat metal frame.

Near the sit down step of face of activity, after its U-shaped fork passed metal frame rear portion aperture, its two ends and forward foot in a step middle part were movably hinged, and the metal frame rearward end and the rear foot are movably hinged, and backing plate is embedded in the metal frame.

Be positioned at the step of forward foot in a step bottom, its metal tube both ends are movably hinged with forward foot in a step bottom respectively, are welded with a spacer pin near the pin joint, and the metal frame of inlaying plate is horizontally fixed on above the metal tube.

Two straight tube upper rear that constitute the forward foot in a step are towards there being an aperture, and handrail tube one side has stamped grooves, and spring leaf and pellet shot from a slingshot are housed in the handrail tube bottom, and pellet shot from a slingshot is fixed on the spring leaf middle part and part is exposed to the handrail tube outside.

Forward and backward seat closed up promptly becomes seat.Activity is sat when rear foot fulcrum upwards rotates, forward and backward seat promptly forms the plane that two-stage is parallel to each other, together with in the terraced chair, existing two steps in bottom, promptly form one four step ladder, again handrail is pulled out from the forward foot in a step and fix, just become a complete ladder.

The utility model is because its movable seat is a crank and rocker mechanism, seat can close up rapidly with the back seat before making becomes seat support or is separated into two steps, thereby this collapsible ladder chair has advantages such as simple in structure, compact, handsome in appearance, chair, the rapid convenience of ladder conversion, good rigidly.

Fig. 1 is the stereogram of the utility model chair state;

Fig. 2 is the stereogram of the utility model scalariform attitude;

Fig. 3 is the movable stereogram of sitting of the utility model;

Fig. 4 is an A-A cutaway view Amplified image shown in Figure 1;

Fig. 5 is the utility model handrail tube front view;

Fig. 6 is the movable four-bar crank and rocker mechanism schematic diagram of sitting of the utility model;

The crank and rocker mechanism schematic diagram was sat in activity when Fig. 7 was the utility model chair state;

The crank and rocker mechanism schematic diagram was sat in activity when Fig. 8 was the utility model scalariform attitude.

Below by embodiment the utility model is further elaborated.

With reference to Fig. 1, shown in Figure 2, the collapsible ladder chair is by the forward foot in a step (1), the rear foot (2), movable (3), backrest (26), step (4), step (5), plug-type handrail tube (6) formation of sitting.Manufacture the forward foot in a step (1), the rear foot (2) with round steel pipe.After two square steel tubes bendings and intercepting required size, be welded on the forward foot in a step (1) top and form backrest (26).Adjustable shelf (7) is welded into " ∏ " type with round steel pipe, and it is connected with the rear foot (2) top with hinges (fulcrum is M).Referring to shown in Figure 3, preceding seat (9), back seat (8) are embedded in preceding seat metal frame (11), recoil sheetmetal frame (25) respectively, then it is packed in the adjustable shelf (7), the front end of forward and backward seat metal frame (11,25) is movably hinged (fulcrum is A, C) respectively with adjustable shelf (7), forward and backward seat metal frame is movably hinged by connecting rod (10) between (11,25), constitutes a complete activity and sits (3).At this moment, whole movable sit (3) promptly become a four-bar crank and rocker mechanism, and its schematic diagram is seen shown in Figure 6.At this moment, adjustable shelf (7) is a fixture, and the AB of seat (9) is a crank before the representative, and representing the CD of back seat (8) is rocking bar, and connecting rod (10) is BD.When this four bar was located along the same line, referring to shown in Figure 7, at this moment, forward and backward seat (9,8) was positioned at same horizontal level, becomes the seat of chair, referring to shown in Figure 1.When activity is sat (3) around rear foot fulcrum (M) when upwards rotating, forward and backward seat metal frame (11,25) can rotate around self rotating shaft (fulcrum A, C), to form two planes that are parallel to each other, referring to shown in Figure 8, the preceding seat metal frame (11) of seat (9) rides on backrest (26) top of the forward foot in a step (1) before inlaying, and with little hook (12) the hook jail on seat metal frame (11) both sides before being installed in, to prevent that it is to retrolisthesis.Movable sit (3) through such variation just become the 3rd, fourth stage step.In two straight tubes of the forward foot in a step (1) a plug-type handrail tube (6) is housed respectively, the straight tube upper rear of the forward foot in a step (1) is dashed an aperture (1-1), handrail tube (6) one sides have a stamped grooves (6-1), one spring leaf (17) and pellet shot from a slingshot (18) are housed in handrail tube (6) bottom, pellet shot from a slingshot (18) is fixed on spring leaf (17) middle part and passes aperture and is exposed to outside the handrail tube, referring to Fig. 4, shown in Figure 5.At this moment, handrail tube (6) is upwards pulled out from the straight tube of the forward foot in a step (1), eject from the straight tube of the forward foot in a step (1) upper end aperture (1-1), make the straight tube relative fixed of itself and the forward foot in a step (1) until pellet shot from a slingshot (18), promptly form a complete ladder, referring to shown in Figure 2.

Below activity seat (3), a second level step (4) is arranged, referring to shown in Figure 2, backing plate (15) is embedded in the metal frame (13), after U-shaped fork (14) passes metal frame (13) rear portion aperture, its two ends and the forward foot in a step (1) middle part is movably hinged, and metal frame (13) rearward end and the rear foot (2) are movably hinged.This terraced chair is when folded state opens, fork (14) defines the subtended angle of forward and backward pin (1,2) with metal frame (13) and backing plate (15) is ridden on the crossbeam (16) at the forward foot in a step (1) middle part, make second level step (4) when the chair state, can be used as the movable aiding support thing of sitting (3), and when the ladder state, can be used as second level step (4).Lift second level step (4) with hand when folding, at this moment, the forward and backward pin of terraced chair (1,2) closes up, and becomes folded state.

When needing ladder to be transformed to chair, then, promote handrail tube (6) downwards, it is hidden in the forward foot in a step (1) pipe, do not influence the good looking appearance of seat as long as press resilience (18) with hand.In addition, in the handrail upper end block (19) is housed, its effect one is the force of using when pulling out handrail tube (6), the 2nd, make ornament.Plastic mattress pin (20) all is equipped with in forward and backward pin (1,2) bottom.

First order step (5) is equipped with in the forward foot in a step (1) bottom, metal tube (22) two ends are movably hinged with the forward foot in a step (1) bottom respectively, the pin joint below is welded with a spacer pin (21), and the metal frame (23) of inlaying plate (24) is horizontally fixed on above the metal tube (22).When folding, step (5) can upwards draw in, to reduce the duty position.

Claims

1, a kind of collapsible ladder chair by the forward foot in a step (1), the rear foot (2), movable (3), backrest (26) formation of sitting, is characterized in that:

It is a four-bar crank and rocker mechanism that a, hinged support are sat (3) in the activity at the terraced chair forward foot in a step (1), the rear foot (2) middle part, and it can become a plane chair, can also be transformed to upper and lower two layers of step.

B, sit near activity and a step (4) to be arranged below (3), it is bearing on the forward foot in a step (1) middle beam (16).

C, the described forward foot in a step (1) bottom also have a step (5).

2, collapsible ladder chair according to claim 1, it is characterized in that described movable (3) its adjustable shelf (7) of sitting is connected with the rear foot (2) by hinges (M), be movably hinged by connecting rod (10) between preceding seat metal frame (11) and the recoil sheetmetal frame (25), forward and backward seat metal frame (11,25) is connected with adjustable shelf (7) by hinges (A, C) respectively, and forward and backward seat (9,8) is embedded in respectively in the forward and backward seat metal frame (11,25).

3, collapsible ladder chair according to claim 1, after the U-shaped fork (14) that it is characterized in that step (4) passes metal frame (13) rear portion aperture, its two ends and the forward foot in a step (1) middle part is movably hinged, metal frame (13) rearward end and the rear foot (2) are movably hinged, and backing plate (15) is embedded in the metal frame (13).

4, collapsible ladder chair according to claim 1, metal tube (22) both ends that it is characterized in that step (5) are movably hinged with the forward foot in a step (1) bottom respectively, be welded with a spacer pin (21) near its pin joint, the metal frame (23) of inlaying plate (24) is horizontally fixed on above the metal tube (22).

5, described collapsible ladder chair according to claim 1, it is characterized in that constituting two straight tube upper rear of the forward foot in a step (1) towards an aperture (1-1) is arranged, handrail tube (6) one sides have a stamped grooves (6-1), spring leaf (17) and pellet shot from a slingshot (18) are housed in handrail tube (6) bottom, and pellet shot from a slingshot (18) is fixed on spring leaf (17) middle part and part is exposed to handrail tube (6) outside.