CN2515339Y

CN2515339Y - Telescopic stairway

Info

Publication number: CN2515339Y
Application number: CN 01272584
Authority: CN
Inventors: 李云芳
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-11-30
Filing date: 2001-11-30
Publication date: 2002-10-09
Anticipated expiration: 2011-11-30

Abstract

An adjustable staircase comprises continuous 8-shaped staircase borders which are hinged by a plurality of intersected S-shaped movable strips, foot pedals are connected between two borders, the upper end of the staircase is connected on an opening bottom board of floor plates, and two brackets are further arranged on the upper end, the opening of a staircase is provided with an installation frame board, two ends of a location pole are respectively hinged on the brackets on the corresponding side and the installation frame board, two ends of a supporting pole are respectively hinged on the 8-shaped staircase borders on the corresponding side and the bracket, two ends of a spring are respectively connected to the supporting pole and the opening bottom board, which forms flexible reflex structure, and a location angle iron and a retaining block which is arranged at the bottom of the staircase constitute adjustable disconnecting prevention structure. The utility model can contract when not in use, does not occupy using area, can be drawn out conveniently when in use, bears heavy force, is conveniently assembled and disassembled conveniently, and is reliable and safe, and the shape is elegant.

Description

Telescopic stair

Technical field: the utility model relates to a kind of stair of removable installation.

Background technology: it is StoreFront that many buildings for commercial use all adopt bottom, and the upper strata is the structure in house or warehouse, if adopt general fixedly cement stair, area occupied is quite big, and the retail shop less to ground floor area is not suitable for.Can utilize light bamboo ladder, but safe inadequately and attractive in appearance, and want area occupied.

Summary of the invention: at the deficiencies in the prior art, the utility model provides a kind of and does not take up an area of telescopic stair safe in utilization when not using.

The both sides of stair of the present utility model form continuous " 8 " font by the amalgamation of a plurality of S type activity bar cross-articulation, footboard is connected and constitutes telescopic stair between the both sides, this stair upper end is connected the inlet base plate of floor, also be connected on the inlet base plate with corresponding two supports in stair limit, this inlet base plate one side is hinged on the floor, also be provided with the installation deckle board in the floor entrance, the backstay two ends are hinged on respectively on the support that deckle board and respective side are installed, the support bar two ends then are hinged on respectively on " 8 " font stair limit of support and respective side, support bar constitutes the elastic recovery structure with the two ends that inlet is connected spring on the base plate respectively, also is provided with block that location angle bar and stair bottom be provided with and cooperates to constitute and shrink disconnecting prevention structure on the inlet base plate.

The utility model is collapsible above the inlet base plate when not using, and close the upper inlet base plate does not influence lower floor at all.Can pull out during use, load is heavy, does not swing, and is as safe as a house, and easy accessibility, handsome in appearance.

Further specify the utility model below in conjunction with drawings and Examples.

Description of drawings: Fig. 1 is the main structure schematic diagram of embodiment;

Fig. 2 is the A-A sectional view of Fig. 1;

Fig. 3 is the contraction state schematic diagram of embodiment.

Embodiment: as shown in the figure, the both sides of stair form continuous " 8 " font by a plurality of S type activity bar 1 cross-articulation amalgamations, footboard 2 is connected and constitutes telescopic stair between the both sides, this stair upper end is connected on the inlet base plate 3 of floor, also be connected on the inlet base plate 3 with corresponding two supports 4 in stair limit, these inlet base plate 3 one sides are hinged on the floor, also be provided with installation deckle board 5 in the floor entrance, backstay 6 two ends are hinged on respectively on the support 4 that deckle board 5 and respective side are installed, support bar 7 two ends then are hinged on respectively on " 8 " font stair limit of support 4 and respective side, support bar 7 constitutes the elastic recovery structure with the two ends that inlet is connected spring 8 on the base plate 3 respectively, also is provided with block 10 that location angle bar 9 and stair bottom be provided with and cooperates to constitute and shrink disconnecting prevention structures on inlet base plate 3.Because present embodiment is generally used metalwork, has suitable weight,, alleviate operating physical force so adopt spring 8 to bear weight.10 of the blocks of stair bottoms are to shrink under the mode of occupation not and the location angle bar 9 of inlet base plate 3 cooperates, and wholely when preventing to open inlet base plate 3 skid off suddenly.

Owing to possibly some adjustings are done at the stair inclination angle when installing, present embodiment is provided with Connection Block 11 on installation deckle board 5, backstay 6 ends place this Connection Block 11 to move cooperation, then are connected with adjusting nut 12 at backstay 6 ends and constitute the stair incidence regulating mechanisms.Unclamp adjusting nut 12 like this, running fix bar 6 is fastening again in the position of Connection Block 11, conveniently adjusted stair inclination angle.Under inlet base plate 3 free ends, can be provided with and collude circle 13, more convenient when opening inlet base plate 3.Also can establish on the inlet base plate 3 and lock 14, can prevent to use for a long time back inlet base plate 3 to hang like this and dehisce, consistent after locking, simultaneously also more attractive in appearance with the floor level.

Claims

1, a kind of telescopic stair, it is characterized by: the both sides of stair form continuous " 8 " font by a plurality of S type activity bar (1) cross-articulation amalgamation, footboard (2) is connected and constitutes telescopic stair between the both sides, this stair upper end is connected on the inlet base plate (3) of floor, also be connected on the inlet base plate (3) with corresponding two supports in stair limit (4), these inlet base plate (3) one sides are hinged on the floor, also be provided with installation deckle board (5) in the floor entrance, backstay (6) two ends are hinged on respectively on the support (4) that deckle board (5) and respective side are installed, support bar (7) two ends then are hinged on respectively on " 8 " font stair limit of support (4) and respective side, the two ends that are connected spring (8) on support bar (7) and inlet base plate (3) respectively constitute the elastic recovery structure, also be provided with block (10) that location angle bar (9) and stair bottom be provided with and cooperate and constitute the contraction disconnecting prevention structure on inlet base plate (3).

2, telescopic stair according to claim 1, it is characterized by: deckle board (5) is installed is provided with Connection Block (11), backstay (6) end places this Connection Block (11) to move cooperation, then is connected with adjusting nut (12) at backstay (6) end and constitutes the stair incidence regulating mechanism.

3, telescopic stair according to claim 1 and 2 is characterized by: be provided with in the free end below of inlet base plate (3) and collude circle (13), the top is provided with lock (14).