CN211691153U

CN211691153U - Electric telescopic stair

Info

Publication number: CN211691153U
Application number: CN201922056608.7U
Authority: CN
Inventors: 沈小虎
Original assignee: Wuxi Outlets Intelligent Technology Co ltd
Current assignee: Wuxi Outlets Intelligent Technology Co ltd
Priority date: 2019-11-25
Filing date: 2019-11-25
Publication date: 2020-10-16
Anticipated expiration: 2029-11-25

Abstract

The utility model belongs to the technical field of stair, especially, be an electronic flexible stair, be the flexible actuating mechanism of flexible action including flexible stair body and being used for driving this flexible stair body, flexible stair body comprises a plurality of double-deck folding plate couplings, double-deck folding plate comprises upper footboard, lower floor's footboard and folding riser, rotates through folding riser between two adjacent double-deck folding plate and connects. The utility model discloses abandoned the tradition and supported the flexible stair structure of expansion stair tread by compression spring and wire rope telescopic machanism's combination, through the use of the flexible stair body of flexible actuating mechanism cooperation, utilize driving motor's positive and negative rotation can realize flexible stair's flexible and expansion in the ball linear guide rail, compare compared with prior art, need not frequent change spare part, reduced the maintenance cost, and stability is higher, makes flexible stair's safety in utilization obtain the guarantee.

Description

Electric telescopic stair

Technical Field

The utility model relates to a stair technical field specifically is an electronic flexible stair.

Background

The commercial and residential top-level residence often has an attic, so that a fixed stair or a movable stair is needed to be built for getting on and off the attic conveniently, the fixed stair needs to occupy a certain residence space, the movable stair is erected at an attic opening when in use, and the movable stair is not convenient to carry and store when not in use. The loft telescopic stairway is adopted in the recent years gradually in a popular way, and is a foldable stairway which is fixedly installed at the position of a loft opening, is folded and collected on a loft platform at ordinary times, does not damage the structure and the appearance of the top surface of a room in a collection state, and is unfolded and erected at a fixed position in a manual or automatic mode when in use, so that the loft stairway is very convenient, the technique of the loft telescopic stairway is mature and forms series products, a plurality of manufacturers produce and customize at home and abroad, but the loft telescopic stairway does not have the handrail function due to the limitation of the structure and the space, and therefore, the person goes up and down the stairway inconveniently and has certain potential safety hazards.

Chinese patent CN201410025692.5 discloses an electric telescopic stair with a handrail, which comprises a motor, a winding belt wheel, a steel wire rope, a compression spring, a stair tread, a foldable vertical plate and a handrail guardrail, wherein the winding belt wheel is connected to one side of the motor, the steel wire rope is connected between the winding belt wheel and the compression spring, the compression spring is installed between the stair tread and the foldable vertical plate, the handrail guardrail is installed on the upper part of the stair tread, when the telescopic stair is folded, the steel wire rope is tightened through the motor, and the handrail guardrail is in a furled shape; when the telescopic stair is folded and unfolded, the motor rotates reversely to loosen the steel wire rope, the stair tread and the foldable vertical plate are unfolded under the action of the compression spring, and the handrail guardrail is synchronously unfolded along with the stair tread. This take electronic flexible stair of handrail can be folded this stair and hide on loft upper portion, can expand automatically when needs are used, make things convenient for personnel to go up and down, still reach safety protection's effect through setting up the handrail guardrail, this extending structure is through the motor, the coiling band pulley, wire rope and compression spring's cooperation is accomplished, but at the in-process that stair were opened repeatedly, the continuous atress compression of compression spring greatly influences its durability, it is frequent to change, use cost has been increased, and only lean on compression spring to support stair tread and collapsible riser and reach the purpose that stair expanded, make this flexible stair's safety in utilization can not be ensured, in addition, flexible stair are in when fold condition, wire rope is lasting the atress, this is higher to wire rope's operation requirement, and easily take place cracked danger.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The utility model is not enough to prior art, the utility model provides an electronic flexible stair, when having solved flexible stair use among the prior art, at the in-process that stair were opened repeatedly, the continuous atress compression of compression spring greatly influences its durability, it is frequent to change, use cost has been increased, and only lean on compression spring to support stair tread and collapsible riser and reach the purpose that stair expand, make this flexible stair's safety in utilization can not be ensured, in addition, flexible stair is in when fold condition, wire rope is lasting atress, this operation requirement to wire rope is higher, and the easy cracked dangerous problem that takes place.

(II) technical scheme

In order to achieve the above object, the utility model provides a following technical scheme: an electric telescopic stair comprises a telescopic stair body and a telescopic driving mechanism used for driving the telescopic stair body to do telescopic action, wherein the telescopic stair body is formed by connecting a plurality of double-layer folding plates, each double-layer folding plate comprises an upper-layer pedal, a lower-layer pedal and a folding vertical plate, two adjacent double-layer folding plates are rotatably connected through the folding vertical plate, the bottom of the front end of the upper-layer pedal is connected with the top of the rear end of the lower-layer pedal through the folding vertical plate, the folding vertical plate is rotatably connected with the upper-layer pedal and the lower-layer pedal, the double-layer folding plates are of a right-angle Z-shaped structure after being unfolded, the telescopic driving mechanism comprises a ball screw linear guide rail, a sliding table, a connecting plate, an arc-shaped guide plate, a fixed seat, a guide slide rod and a guide sleeve, the sliding table is fixedly connected to a screw nut of the ball screw linear guide rail, and the arc, be equipped with the arc spout on the arc baffle, the inside sliding fit of arc spout has the slider, the slider is with the lower floor footboard fixed connection of the first double-deck folding plate that is in flexible stair body bottom, the arc spout is close to and folds in the slip orbit looks adaptation of upper footboard below with lower floor footboard, fixing base fixed mounting is downside on ball linear guide's the front and back both ends, the direction slide bar is connected between two fixing bases around the vertical correspondence, guide pin bushing fixed mounting is on the arc baffle keeps away from the lateral wall of arc spout, guide pin bushing and direction slide bar sliding fit.

As an optimal technical scheme of the utility model, when flexible stair body erects in the position of being close to loft wall one side, ball linear guide inlays and adorns in the wall.

As a preferred technical scheme of the utility model, the lower floor's footboard bottom that is located the first double-deck folding plate of flexible stair body bottom is equipped with touches the bottom plate, it is equipped with the enhancement scute to touch between bottom plate and the lower floor's footboard.

As an optimal technical scheme of the utility model, the length of upper footboard and lower floor's footboard is greater than the length of folding riser.

As an optimal technical scheme of the utility model, the one end top that folding riser was kept away from to upper footboard and lower floor's footboard in every double-deck folded sheet spare one end top all is equipped with the handrail montant, connects through the elasticity rope between two adjacent handrail montant tops.

(III) advantageous effects

Compared with the prior art, the utility model provides an electronic flexible stair possesses following beneficial effect:

this electronic flexible stair has abandoned the tradition and has supported the flexible stair structure that expandes the stair tread by compression spring and wire rope telescopic machanism's combination, and through the use of flexible stair body of flexible actuating mechanism cooperation, the flexible and expansion of flexible stair can be realized to driving motor's in utilizing ball linear guide positive and negative commentaries on classics, compares with prior art, need not frequent change spare part, has reduced the maintenance cost, and stability is higher, makes the safety in utilization of flexible stair obtain the guarantee.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic view of the expansion structure of the middle telescopic stairway of the present invention;

fig. 3 is the structural schematic diagram of the middle ball screw linear guide rail of the present invention.

In the figure: 1. a double-layer folded plate; 101. an upper deck pedal; 102. a lower deck pedal; 103. folding the vertical plate; 2. a telescopic driving mechanism; 201. a ball screw linear guide rail; 202. a sliding table; 203. a connecting plate; 204. an arc-shaped guide plate; 2041. an arc-shaped chute; 2042. a slider; 205. a fixed seat; 206. a guide slide bar; 207. a guide sleeve; 3. a touch bottom plate; 4. reinforcing corner plates; 5. a handrail vertical rod; 6. an elastic cord.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Examples

Referring to fig. 1-3, the present invention provides the following technical solutions: an electric telescopic stair comprises a telescopic stair body and a telescopic driving mechanism 2 for driving the telescopic stair body to do telescopic action, wherein the telescopic stair body is formed by connecting a plurality of double-layer folding plates 1, each double-layer folding plate 1 is composed of an upper-layer pedal 101, a lower-layer pedal 102 and a folding vertical plate 103, two adjacent double-layer folding plates 1 are rotatably connected through the folding vertical plate 103, the bottom of the front end of the upper-layer pedal 101 is connected with the top of the rear end of the lower-layer pedal 102 through the folding vertical plate 103, the folding vertical plate 103 is rotatably connected with the upper-layer pedal 101 and the lower-layer pedal 102, the double-layer folding plates 1 are in a right-angle Z-shaped structure after being unfolded, the telescopic driving mechanism 2 comprises a ball screw linear guide rail 201, a sliding table 202, a connecting plate 203, an arc-shaped guide plate 204, a fixed seat 205, a guide slide rod 206 and a guide sleeve 207, the sliding table 202 is, arc baffle 204 passes through connecting plate 203 fixed mounting on slip table 202, be equipped with arc spout 2041 on the arc baffle 204, the inside sliding fit of arc spout 2041 has slider 2042, slider 2042 and the lower floor footboard 102 fixed connection of the first double-deck folding plate 1 that is in flexible stair body bottom, arc spout 2041 is close to and folds the sliding track looks adaptation in upper footboard 101 below with lower floor footboard 102, fixing base 205 fixed mounting is on ball linear guide 201's front and back both ends downside, guide slide 206 is connected between two fixing bases 205 in the front and back that correspond from top to bottom, guide sleeve 207 fixed mounting is on the lateral wall that arc baffle 204 kept away from arc spout 2041, guide sleeve 207 and guide slide 206 sliding fit.

In this embodiment, the flexible stair body also can say that constitute by a plurality of footboards and riser, and the front end bottom of upper footboard 101 is connected with the rear end top of lower floor's footboard 102 through folding riser 103, and the top front side and the bottom rear side of folding riser 103 all are equipped with the locating part, and this locating part is the limit structure who is right angle Z type structure when being used for making 1 opens of double-deck folding plate, plays the effect that makes the folding riser 103 of injecion only at 90 within range rotations.

Specifically, when the telescopic stair body is erected at a position close to one side of the attic wall, the ball screw linear guide 201 is embedded in the wall.

In this embodiment, the ball screw linear guide 201 is embedded in the wall, so that the space in the wall is reasonably utilized, and the occupied space area of the ball screw linear guide 201 is reduced.

Specifically, the bottom of the lower pedal 102 of the first double-layer folding plate 1 at the bottom end of the telescopic stair body is provided with a contact bottom plate 3, and a reinforcing angle plate 4 is arranged between the contact bottom plate 3 and the lower pedal 102.

In this embodiment, the setting of touch bottom plate 3 can prevent to produce the friction between lower floor's footboard 102 and ground or the bottom plate, has the height deviation when preventing to install simultaneously, avoids lower floor's footboard 102 to be higher than ground and leads to connecting plate 203 and ball screw linear guide 201 to be only stress point, can provide the effect of fixed stay for flexible stair.

Specifically, the length of the upper deck 101 and the lower deck 102 is greater than the length of the folded riser 103.

In this embodiment, the length of upper footboard 101 and lower footboard 102 is greater than the length of folding riser 103, does benefit to the tip installation handrail montant 5 of upper footboard 101 and lower footboard 102, reduces the difference in height of stair stratum simultaneously, does benefit to upstairs and downstairs.

Specifically, in each double-layer folding plate 1, the top of the end of the upper layer pedal 101 close to the folding vertical plate 103 and the top of the end of the lower layer pedal 102 far away from the folding vertical plate 103 are both provided with the handrail vertical rods 5, and the tops of the two adjacent handrail vertical rods 5 are connected through the elastic ropes 6.

In this embodiment, the setting of handrail montant 5 can improve the security that electronic flexible stair used, goes upstairs and downstairs through the supplementary user of elastic cord 6, plays safety precaution's effect.

The utility model discloses a theory of operation and use flow: when the folding type stair is used, the driving motor of the ball screw linear guide rail 201 is started to drive the ball screw to rotate in the forward direction, so as to drive the screw nut on the ball screw to do linear motion along the axial direction of the screw, the screw nut does linear motion along the axial direction of the screw to drive the sliding table 202, the connecting plate 203 and the arc-shaped guide plate 204 on the screw nut to do linear motion, the arc-shaped guide plate 204 drives the lower-layer pedal 102 of the first double-layer folding plate 1 at the bottom end of the telescopic stair body to do linear motion in the stable sliding process along the guide slide rod 206, so that the lower-layer pedal 102 in the folding state slides along the arc-shaped chute 2041 through the sliding block 2042 until the double-layer folding plate 1 is in a right-angle Z-shaped structure, the remaining double-layer folding plates 1 connected with the folding type stair body are driven to gradually open in the continuous motion process after the, a plurality of double-deck folding plate 1 are whole open states this moment (each double-deck folding plate 1 all is right angle Z type structure promptly), and touch bottom plate 3 and touch ground or floor, realize the automatic expansion of flexible stair promptly, and possess stronger bearing capacity, make things convenient for personnel from top to bottom, when idle, control driving motor antiport, drive ball screw antiport, through the linkage of flexible stair body with telescopic driving mechanism 2, then make flexible stair be shrink fold condition, hide flexible stair, it is more convenient to use.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides an electronic flexible stair, is including flexible stair body and be used for driving this flexible stair body and do flexible actuating mechanism (2) of flexible action, flexible stair body comprises a plurality of double-deck folding plate spare (1) connections, its characterized in that: the double-layer folding plate (1) is composed of an upper layer pedal (101), a lower layer pedal (102) and a folding vertical plate (103), two adjacent double-layer folding plates (1) are rotatably connected through the folding vertical plate (103), the bottom of the front end of the upper layer pedal (101) is connected with the top of the rear end of the lower layer pedal (102) through the folding vertical plate (103), the folding vertical plate (103) is rotatably connected with the upper layer pedal (101) and the lower layer pedal (102), the double-layer folding plate (1) is of a right-angle Z-shaped structure after being unfolded, the telescopic driving mechanism (2) comprises a ball screw linear guide rail (201), a sliding table (202), a connecting plate (203), an arc-shaped guide plate (204), a fixed seat (205), a guide slide rod (206) and a guide sleeve (207), the sliding table (202) is fixedly connected to a screw nut of the ball screw linear guide rail (201), the arc guide plate (204) is fixedly arranged on the sliding table (202) through a connecting plate (203), an arc-shaped sliding groove (2041) is arranged on the arc-shaped guide plate (204), a sliding block (2042) is in sliding fit with the inside of the arc-shaped sliding groove (2041), the sliding block (2042) is fixedly connected with the lower pedal (102) of the first double-layer folding plate (1) at the bottom end of the telescopic stair body, the arc-shaped sliding chute (2041) is matched with a sliding track which is close to the lower pedal (102) and is folded below the upper pedal (101), the fixed seats (205) are fixedly arranged at the upper and lower sides of the front and rear ends of the ball screw linear guide rail (201), the guide slide bar (206) is connected between the front and the rear fixed seats (205) which are corresponding up and down, the guide sleeve (207) is fixedly arranged on the side wall, far away from the arc-shaped sliding groove (2041), of the arc-shaped guide plate (204), and the guide sleeve (207) is in sliding fit with the guide sliding rod (206).

2. The electrically operated telescopic stairway as claimed in claim 1, wherein: when the telescopic stair body is erected at a position close to one side of the loft wall, the ball screw linear guide rail (201) is embedded in the wall.

3. The electrically operated telescopic stairway as claimed in claim 1, wherein: the bottom of a lower-layer pedal (102) of a first double-layer folding plate (1) located at the bottom end of the telescopic stair body is provided with a touch bottom plate (3), and a reinforcing angle plate (4) is arranged between the touch bottom plate (3) and the lower-layer pedal (102).

4. The electrically operated telescopic stairway as claimed in claim 1, wherein: the length of the upper layer pedal (101) and the length of the lower layer pedal (102) are larger than the length of the folding vertical plate (103).

5. The electrically operated telescopic stairway as claimed in claim 1, wherein: the top of one end of each double-layer folding plate (1), close to the folding vertical plate (103), of the upper-layer pedal (101) and the top of one end, far away from the folding vertical plate (103), of the lower-layer pedal (102) are provided with the handrail vertical rods (5), and the tops of the two adjacent handrail vertical rods (5) are connected through the elastic ropes (6).