CN202234176U

CN202234176U - Telescopic movable ladder for bunk bed

Info

Publication number: CN202234176U
Application number: CN 201120309663
Authority: CN
Inventors: 胡荣松; 栾少群; 雷华欢; 楼刚涌; 赵改平
Original assignee: University of Shanghai for Science and Technology
Current assignee: University of Shanghai for Science and Technology
Priority date: 2011-08-24
Filing date: 2011-08-24
Publication date: 2012-05-30
Anticipated expiration: 2021-08-24

Abstract

The utility model discloses a telescopic movable ladder for a bunk bed, which comprises two bearing support arms and a step cross bar for fixedly connecting the two support arms. The lower end portions of the support arms are ladder feet directly supporting the ground, and the upper end portion of the support arm are connected with a bed edge of an upper bed. Each support arm comprises two sections of an upper portion stair section and a lower portion stair section, wherein the upper portion stair section is movably connected with the lower portion stair section through a slide mechanical device, the bottom of the lower portion stair section is a ladder foot, the upper end of the upper portion stair section is rotatably connected with the bed edge of the upper bed through a hinge device, and the support arms rotate perpendicular to the bed edge of the upper bed. The telescopic movable ladder for the bunk bed utilizes hinges to connect the top of a ladder to achieve rotation of the ladder, thereby providing inclined angles of the ladder. Simultaneously, the telescopic movable ladder for the bunk bed uses the slide mechanical device to obtain extension and contraction of the ladder so as to change the length of the ladder, enable the ladder to be contact with the ground in rotation and save space. The telescopic movable ladder for the bunk bed has application prospect in fields of dormitories of colleges and universities, apartments of workers, family life and the like.

Description

The telescopic movable ladder that is used for bunk beds

Technical field

The utility model relates to a kind of bunk beds assembly, and the spy is a kind of ladder that is used for bunk beds fully, and this bunk beds ladder is a movable ladder, has telescopic support arm, is applicable to the students' dormitory bunk beds, is that a kind of realization is gone to bed conveniently, space-saving climbing instrument.

Background technology

In order to save the space, the dormitory of dense population areas such as bunk beds extensive use school, factory.People climb to upper bed for ease, must between upper bed and ground, be provided with ladder.

The ladder of existing bunk beds has two kinds: first kind of ladder is the cat ladder perpendicular to the ground of relevant position welding between bunk bed; As shown in Figure 1, this ladder is close to lathe bed, and it is less to take up room; But also higher to the welding requirement of strength simultaneously, and vertical angle is unfavorable for safe climbing; Second kind is cat ladder angled with ground of design between two adjacent double-layers beds, and as shown in Figure 2, this ladder has utilized labour-saving, slope principle, makes things convenient for the user to go up descending stair, but has also increased taking up room of bunk beds simultaneously.

The utility model content

The purpose of the utility model is to provide a kind of telescopic movable ladder that is used for bunk beds; The effort behavior that this ladder has avoided people in the past on the ladder perpendicular to ground, to creep; This movable ladder can also change the inclination angle through rotating; Convenient for collecting only needs a simple telescopic movable ladder just can realize not only laborsaving but also space-efficient effect.

For reaching the foregoing invention purpose, the utility model is taked following technical scheme:

A kind of telescopic movable ladder that is used for bunk beds; The support arm and the step strut rail that is fixedly connected two support arms that comprise two load-bearing; The bottom of support arm is the foot of ladder that directly supports ground, and the upper end of support arm is connected with the bedside on upper berth edge, and support arm comprises top bench and bottom bench two parts; Flexibly connect through the sliding mechanical device between top bench and the bottom bench; The bottom of bottom bench is foot of ladder, and the top of top bench is rotationally connected through the bedside edge on hinge means and upper berth, and support arm rotates perpendicular to the bedside edge on upper berth.The utility model utilizes hinge to connect the rotation that cat ladder is realized at the cat ladder top, thereby the inclination angle of cat ladder is provided.Utilize the sliding mechanical device to realize the flexible of cat ladder simultaneously, thereby change the length of cat ladder, still can land when cat ladder is rotated, saved the space.

The above-mentioned top bench and the support arm of bottom bench form the sliding metal sleeve pipe, and the bayonet lock detent mechanism is installed between the metal sleeve, form the sliding mechanical device.

Above-mentioned bayonet lock detent mechanism is hollow elastic expansion of metal joint, and the expansion of metal joint is provided with flexible member for spherical in the expansion of metal joint.

The hinge means of the utility model can adopt bearing.Be characterized in: the top of ladder is linked to each other it by rolling bearing with the bedside edge, the middle part of ladder is fixed by telescopic sliding mechanical device, and two parts ladder dynamically combined about it was incited somebody to action.

Above-mentioned bearing adopts radial-thrust bearing, prevents that ladder from endwisely slipping along bearing, guarantees the safe in utilization of ladder.

The utility model has following substantive distinguishing features and advantage compared with prior art:

Use the movable ladder of the utility model, only need simple flexible rotating operation just can reach and go to bed conveniently, space-saving effect all has good practical prospect in fields such as colleges and universities' dormitory, worker apartment, family lives.

Description of drawings

Fig. 1 is the bunk beds structure chart that has fixed vertical ladder in the prior art hand.

Fig. 2 is the bunk beds structure chart that has fixed inclination ladder in the prior art hand.

Fig. 3 is the bunk beds structural representation with movable ladder of first embodiment of the utility model.

Fig. 4 is the carrying mechanical analysis schematic diagram of the movable ladder of first embodiment of the utility model.

Fig. 5 is the sliding mechanical principle of device sketch map among first embodiment of the utility model.

Fig. 6 is the rolling bearing principle schematic among second embodiment of the utility model.

The specific embodiment

The preferred embodiment accompanying drawings of the utility model is following:

Embodiment one:

Referring to Fig. 3; A kind of telescopic movable ladder that is used for bunk beds comprises that the support arm and the step strut rail that is fixedly connected two support arms of two load-bearing, the bottom of support arm are the foot of ladder 6 that directly supports ground; The upper end of support arm is connected along 3 with the bedside on upper berth 7; It is characterized in that: support arm comprises top bench 4 and bottom bench 5 two parts, flexibly connects through sliding mechanical device 2 between top bench 4 and the bottom bench 5, and the bottom of bottom bench 5 is foot of ladder 6; The top of top bench 4 is rotationally connected through the bedside edge 3 of hinge means 1 with upper berth 7, and support arm rotates along 3 perpendicular to the bedside on upper berth 7.Can know that from Fig. 1 and Fig. 2 in the existing fixed vertical ladder and fixed inclination ladder of tradition, people are in climbing and use in the process of ladder, have the deficiency of effort or wasting space.The movable ladder of present embodiment has overcome the deficiency of existing ladder, has both realized the purpose that tilts to creep, and has saved the space again.At the ladder stand period of the day from 11 p.m. to 1 a.m, utilize hinge to connect the rotation that cat ladder is realized at the cat ladder top, thereby the inclination angle of cat ladder is provided.During without ladder, top bench 4 can inwardly be rotated through hinge means 1, is 90 degree right angles with bedside edge 3, so that take in.In the present embodiment, the people is in climbing movable ladder process, and the step strut rail directly carries human weight G, and the step strut rail conducts human weight G respectively through the support arm of movable ladder earthward with the bedside edge 3 on upper berth 7.Referring to Fig. 4; Since the effect of human weight G, the inner axial compressive force F that produces of the support arm of movable ladder, and the support arm position that is connected with the step strut rail produces inner shearing N; Produce moment of torsion, the axial compressive force F of support arm and shearing N are the component of human body weight G.As shown in Figure 4, the inclination angle of supposing ladder and ground is 60 degree, is 1.7m like the ladder overhead height, and originally the ladder length overall is about 2.5m.Adopt the technical scheme of present embodiment, the ladder length overall is flexible at least can the length range between 1.7m～2.5m, and the material of support arm can be selected for use steel alloy tentatively to check intensity to reach requirement.

Referring to Fig. 5, the support arm of above-mentioned top bench 4 and bottom bench 5 forms the sliding metal sleeve pipe, and the bayonet lock detent mechanism is installed between the metal sleeve, forms sliding mechanical device 2.Present embodiment utilizes the sliding mechanical device to realize the flexible of cat ladder, thereby changes the length of cat ladder, still can land when cat ladder is rotated.

Above-mentioned bayonet lock detent mechanism is spherical for hollow elastic expansion of metal joint 8, expansion of metal joint 8, is provided with flexible member in the expansion of metal joint 8.In the present embodiment, can be through pressing the sphere of elastic metallic expansion joint 8, elasticity of compression expansion of metal saves the flexible members such as spring in 8, and the interior pipe of sliding metal sleeve pipe can slide in outward appearance.

Embodiment two:

The technical scheme of present embodiment and first embodiment is basic identical, and difference is:

Referring to Fig. 6, in the present embodiment, hinge means 1 is a Bearning mechanism.Utilize bearing to connect the rotation that cat ladder is realized at the cat ladder top, the inclination angle of cat ladder can be provided.

Above-mentioned Bearning mechanism preferably adopts radial-thrust bearing.Radial-thrust bearing is claimed radial thrust bearing again, can bear radial load and axial load simultaneously.Consider actual conditions, bearing need bear axial stress when the berth cat ladder rotated, and slided to prevent axle, bore radial stress again during cat ladder simultaneously, adopted the radial-thrust bearing better effects if, can guarantee safety.

Combine accompanying drawing that the utility model embodiment is illustrated above; But the utility model is not limited to the foregoing description; Can also make multiple variation according to the purpose that the utility model of the utility model is created; Change, the modification of making under all spirit and principles according to the utility model technical scheme, substitute, combination, simplify, all should be the substitute mode of equivalence, like the slippage pair that the sliding mechanical device adopted, the structure of bayonet lock detent mechanism, the mechanical realization of hinge means etc.; As long as meet the structural principle of rotatable and telescopic ladder, all belong to the protection domain of the utility model.

Claims

1. telescopic movable ladder that is used for bunk beds; The support arm and the step strut rail that is fixedly connected two said support arms that comprise two load-bearing; The bottom of said support arm is the foot of ladder (6) that directly supports ground; The upper end of said support arm is connected along (3) with the bedside of upper berth (7); It is characterized in that: said support arm comprises top bench (4) and bottom bench (5) two parts, flexibly connects through sliding mechanical device (2) between said top bench (4) and the bottom bench (5), and the bottom of said bottom bench (5) is said foot of ladder (6); The top of said top bench (4) is rotationally connected along (3) through the bedside of hinge means (1) with said upper berth (7), and said support arm rotates along (3) perpendicular to the bedside of said upper berth (7).

2. the telescopic movable ladder that is used for bunk beds according to claim 1; It is characterized in that: the support arm of said top bench (4) and bottom bench (5) forms the sliding metal sleeve pipe; The bayonet lock detent mechanism is installed between the said metal sleeve, forms sliding mechanical device (2).

3. the telescopic movable ladder that is used for bunk beds according to claim 2; It is characterized in that: said bayonet lock detent mechanism is hollow elastic expansion of metal joint (8); Said expansion of metal joint (8) is spherical, is provided with flexible member in the said expansion of metal joint (8).

4. according to any described telescopic movable ladder that is used for bunk beds in the claim 1～3, it is characterized in that: said hinge means (1) is a Bearning mechanism.

5. the telescopic movable ladder that is used for bunk beds according to claim 4 is characterized in that: said Bearning mechanism adopts radial-thrust bearing.