CN113653276A - Foldable stair with lifting attic - Google Patents
Foldable stair with lifting attic Download PDFInfo
- Publication number
- CN113653276A CN113653276A CN202111134501.5A CN202111134501A CN113653276A CN 113653276 A CN113653276 A CN 113653276A CN 202111134501 A CN202111134501 A CN 202111134501A CN 113653276 A CN113653276 A CN 113653276A
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- CN
- China
- Prior art keywords
- driving
- stair
- lifting
- loft
- rod
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F11/00—Stairways, ramps, or like structures; Balustrades; Handrails
- E04F11/02—Stairways; Layouts thereof
- E04F11/04—Movable stairways, e.g. of loft ladders which may or may not be concealable or extensible
- E04F11/06—Movable stairways, e.g. of loft ladders which may or may not be concealable or extensible collapsible, e.g. folding, telescopic
- E04F11/062—Movable stairways, e.g. of loft ladders which may or may not be concealable or extensible collapsible, e.g. folding, telescopic folding
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F11/00—Stairways, ramps, or like structures; Balustrades; Handrails
- E04F11/02—Stairways; Layouts thereof
- E04F11/04—Movable stairways, e.g. of loft ladders which may or may not be concealable or extensible
- E04F11/06—Movable stairways, e.g. of loft ladders which may or may not be concealable or extensible collapsible, e.g. folding, telescopic
- E04F11/062—Movable stairways, e.g. of loft ladders which may or may not be concealable or extensible collapsible, e.g. folding, telescopic folding
- E04F11/066—Movable stairways, e.g. of loft ladders which may or may not be concealable or extensible collapsible, e.g. folding, telescopic folding folding like scissors or accordions
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Steps, Ramps, And Handrails (AREA)
Abstract
The stair climbing device is fixedly installed at the bottom of an attic lifting platform, and is driven by a motor as power, and a power linkage rod is connected with and pushes the stair fixedly connected with a driving support through a hinge or a pin, so that the climbing stair can be folded and stretched out to be convenient for climbing up and down when the lifting support platform of the attic is lowered, the lifting attic lifting support platform rises, and the stair is folded and hidden to be accommodated at the bottom of the lifting attic lifting support platform and rises along with the lifting support platform when the stair does not climb up and down; the occupation of climbing stairs to the ground space is saved.
Description
Technical Field
The invention belongs to furniture, and particularly relates to a folding stair used for a household elevating attic.
Background
As the urban population is large and the house price is high, many people buy small house type houses, the use area of the room is too small, and some families are larger, can utilize living space with high efficiency and use lofts which can be lifted; like the lift loft that patent 201820628108.9 disclosed, the stair of climbing from top to bottom is fixed mounting and places in the one side of lift loft, rises at the lift loft, when not being suitable for the loft to climb from top to bottom, and the idle placing of stair can additionally occupy a part living space and can't accomodate and bring inconvenience for the life.
Disclosure of Invention
In order to solve the defect that the climbing stair for the loft is fixed and occupies the indoor ground space in practical application, the invention provides the climbing stair which is fixedly arranged at the bottom of a lifting platform of the loft and is driven by a motor serving as power, a transmission rod is connected and pushed to fixedly connect and drive the stair on a support through a hinge or a pin, so that the climbing stair can be folded and extended to be convenient for climbing up and down when the lifting platform of the loft descends, the lifting platform of the loft ascends, and the stair is folded and hidden to be accommodated at the bottom of the lifting platform of the loft and ascends along with the lifting platform when the climbing platform of the loft does not need to climb up and down; the occupation of climbing stairs to space is saved.
Drawings
Fig. 1 is a perspective view of a drive mechanism of an embodiment 1 of the raised attic folding stair of the present invention.
Figure 2 is a right side view of the drive mechanism of embodiment 1 of the invention for a raised attic folding staircase.
Fig. 3 is an extended perspective view of the example 1 of the foldable attic ladder of the present invention.
Fig. 4 is a folding perspective view of embodiment 1 of the lifting attic folding stairway of the invention.
Fig. 5 is a perspective view of the stair drive mechanism of embodiment 2 of the raised loft folding stair of the present invention.
Fig. 6 is a perspective view of the stair installation of the foldable loft stairway of embodiment 2 of the present invention.
Fig. 7 is a perspective view of the extended stage of the foldable loft stairway of embodiment 2 of the present invention.
Fig. 8 is a folding perspective view of the foldable stairway of the elevating loft of the present invention, embodiment 2.
Figure 9 is a right side view of the extended attic folding stair embodiment 3 of the invention.
Fig. 10 is a perspective view of the foldable loft stairway of the present invention, shown in fig. 4, after the stairway is extended.
Figure 11 is a right side view of the extended attic folding stairway of embodiment 4 of the invention.
Reference numbers in fig. 1-11 indicate:
1, driving a motor; 2, driving the fixed bracket; 3, driving the fixed bracket; 4, fixing a base by a linear optical axis guide rail; 5, a limit switch; 6, linear optical axis guide rail; 7, a limit switch; 8, driving the fixed bracket; 9, driving the linkage rod; 10, a first layer of stair tread supports; 11, a first driving rod linkage rod; 12, a second driving rod linkage rod; 13, a first layer of stair treads; 14, a third driving rod linkage rod; 15, second floor steps; 16, a fourth driving rod linkage rod; 17, a third layer of stair treads; 18, a fifth drive rod linkage rod; 19, a fifth driving rod linkage rod; 20, a fourth driving rod linkage rod; 21, a third driving rod linkage rod; 22, a second drive rod linkage rod; 23, a first driving rod linkage rod; 25, driving the movable bracket by the trapezoidal screw rod; 26, a trapezoidal screw rod; 27, a bearing mount; 28, linear optical axis guide rails; 29, fixing a base by a linear optical axis guide rail; 30, driving the fixed bracket; 31, a lifting platform; 32, elevating attic prop 33, elevating attic prop; 34, lifting attic pillars; 35, lifting attic pillars; 36, a drive rod linkage rod; 37, a stair fixing bracket; 38, a hinge; 39, stairs; 40 driving a linkage rod; 41, a hinge; and 42, pushing a rod by a motor.
The implementation is as follows.
As shown in fig. 1, a stair driving mechanism of an embodiment 1 of the foldable loft stairway of the present invention is a three-dimensional view, and the driving fixing bracket 2 and the driving fixing bracket 8 are fixed between the driving fixing bracket 30 and the driving fixing bracket 3 at two ends respectively to form a driving frame of the foldable stairway.
Further, the drive fixing support 2 and the drive fixing support 8 are respectively and symmetrically provided with a linear optical axis guide rail fixing base 4, a linear optical axis guide rail fixing base 29 and a bearing base 27 in opposite directions in the drive frame; for fixing the linear optical axis guide rail 6, the linear optical axis guide rail 28 and the trapezoidal lead screw 26 respectively; the driving motor 1 is fixedly arranged on the driving fixing support 4 through a motor fixing support; and is connected with a trapezoidal screw rod 26, one end of which penetrates through a bearing base 27 and the driving fixing support 2, through a coupling on a driving shaft of the driving motor 1.
Further, linear motion bearings are correspondingly sleeved on the linear optical axis guide rail 6 and the linear optical axis guide rail 28 respectively, and trapezoidal nuts are correspondingly sleeved on the trapezoidal screw rods 26; the linear motion bearing and the trapezoidal nut are respectively and correspondingly fixedly arranged on the trapezoidal screw rod driving moving bracket 25; a power mechanism which can be rotated by a motor and drives the trapezoidal screw rod to drive the movable bracket 25 to move back and forth is formed.
Further, the method is simple.
The top ends of the first driving linkage rod 11, the first driving rod linkage rod 23 and the second driving linkage rod 12 and the second driving linkage rod 22 are respectively connected with the inner sides of the driving fixing support 30 and the driving fixing support 3 through pins; so that the staircase can be folded inwards.
The front sections of the brackets at the two sides of the first layer of stair tread 13 are respectively connected with the first driving linkage rod 11 and the bottom end of the first driving rod linkage rod 23 through pins; the middle sections of the two side brackets are connected with the middle parts of a second driving linkage rod 12 and a second driving linkage rod 22, and the rear ends of the two sides are connected with the top ends of a third driving linkage rod 21 and a third driving linkage rod 14.
The front sections of the brackets at two sides of the second-layer stair pedal 15 are respectively connected with the bottom ends of a second driving linkage rod 12 and a second driving linkage rod 22 through pins, the middle sections at two sides are connected with a third driving linkage rod 21 and the middle of a third driving linkage rod 14, and the rear ends at two sides are connected with the top ends of a fourth driving linkage rod 16 and a fourth driving linkage rod 20.
The front sections of the two sides of the third-layer stair tread 17 are respectively connected with a third driving linkage rod 21 and the bottom end of a third driving linkage rod 14 through pins, the middle sections of the two sides of the third-layer stair tread are connected with a fourth driving linkage rod 16 and the middle of a fourth driving linkage rod 20, and the rear ends of the two sides of the third-layer stair tread are connected with the top ends of a fifth driving linkage rod 18 and a fifth driving linkage rod 19.
A fourth driving linkage rod 16, a fifth driving linkage rod 18 and a fourth driving linkage rod 20, wherein the lower ends of the fifth driving linkage rods are respectively connected with the lower ends of the fifth driving linkage rods 19 through linkage rods by using pins, and the foldable stairway is formed.
Further, as shown in fig. 2, in the right side view of the stair driving mechanism of embodiment 1 of the foldable loft elevator of the present invention, one end of the driving linkage rod 9 is connected via a pin to a lifting lug mounted and fixed at the middle end of the bottom of the trapezoidal screw rod driving moving bracket 25; the other end is connected with a lifting lug of the first-layer stair tread bracket 10 through a fixing piece by a pin; the integral driving structure of the folding stair is formed.
Further, when the stairs are required to be extended, the driving motor 1 rotates, the trapezoidal screw rod 26 is driven to rotate by the coupler on the driving shaft of the driving motor 1, the trapezoidal screw rod drives the movable support 25 to move forwards along the linear optical axis guide rail 6 and the linear optical axis guide rail 28 under the action of the coupler which is fixed with the trapezoidal screw rod and is respectively sleeved on the linear optical axis guide rail 6 and the linear optical axis guide rail 28, the trapezoidal screw rod drives the stairs through the driving linkage rod 9 which is fixedly connected with the middle lifting lug at the bottom of the trapezoidal screw rod driving movable support 25 and is used for pushing the stairs to extend outwards, when the driving movable support 25 moves to the preset position of the limit switch 7, the limit switch 7 is triggered to act, the motor 1 stops rotating, and the stairs are extended at the moment.
When the stairs are required to be folded, the driving motor 1 rotates in the opposite direction, the trapezoidal screw rod 26 is driven to rotate in the opposite direction through the coupler on the driving shaft of the driving motor 1, the trapezoidal screw rod drives the movable support 25 to move in the opposite direction along the linear optical axis guide rail 6 and the linear optical axis guide rail 28 under the action of the coupler which is fixed with the trapezoidal screw rod and respectively sleeved on the linear optical axis guide rail 6 and the linear optical axis guide rail 28, the trapezoidal screw rod 26 is driven to fold inwards by the driving linkage rod 9 which is fixedly connected with the middle lifting lug at the bottom of the trapezoidal screw rod driving movable support 25, when the driving movable support 25 moves to the preset position of the limit switch 5, the limit switch 5 is triggered to act, the motor 1 stops rotating, and the stairs are folded completely.
As shown in fig. 3, a stair extension perspective view of an embodiment 1 of the foldable stair with a foldable loft according to the present invention is shown, wherein a lifting loft prop 32, a lifting loft prop 33, a lifting loft prop 34, and a lifting loft prop 35 constitute a frame support of the foldable loft, two ends of a driving fixed support 3 and a driving fixed support 30 of a driving structure of the foldable stair are respectively fixed with a lifting platform 31, when the lifting loft lifting platform needs to be climbed up and down by using the stair, the driving motor 1 rotates to drive the stair to extend outward, when the driving movable support 25 moves to a set limit switch 7, the motor stops rotating, and at this time, the stair is completely extended, so as to facilitate climbing up and down by using the stair; and the ladder-shaped screw rod can be automatically folded back due to the fact that the lead angle of the thread is smaller than the static friction angle and the ladder has the self-locking characteristic.
As shown in fig. 4, a folding perspective view of the stair of the embodiment 1 of the foldable loft ladder of the present invention, when the loft lifting platform does not need to be climbed up and down by using the stair, the driving motor 1 rotates reversely to drive the stair to fold inwards; when the driving movable support 25 moves to the set limit switch 5, the motor stops rotating, the folding of the staircase is finished and is fixed at the bottom of the loft lifting platform 31 in a folding mode, the folded staircase also rises along with the lifting of the loft lifting platform 31 when the lifting loft lifting platform 31 rises, the indoor space is not occupied, and the staircase after the ladder-shaped lead screw has the self-locking characteristic due to the fact that the lead screw is smaller than the static friction angle and cannot slide down and extend by self due to self gravity.
As shown in fig. 5, a stair driving mechanism of embodiment 2 of the foldable loft stairway of the invention is shown in a perspective view, two ends of the driving fixing bracket 2 and the driving fixing bracket 8 are respectively fixed between the driving fixing bracket 30 and the driving fixing bracket 3 to form a driving and supporting frame of the foldable stairway.
Further, the driving fixing support 2 and the driving fixing support 8 are respectively and symmetrically provided with a linear optical axis guide rail fixing base 4, a linear optical axis guide rail fixing base 29 and a trapezoidal screw shaft bearing base 27 in opposite directions in the driving supporting frame; for fixing the linear optical axis guide rail 6, the linear optical axis guide rail 28 and the trapezoidal lead screw 26 respectively; the driving motor 1 is fixedly arranged on the driving fixing support 4 through a motor fixing support; and is connected with a trapezoidal screw rod 26, one end of which penetrates through a bearing base 27 and the driving fixing support 2, through a coupling on a driving shaft of the driving motor 1.
Further, linear motion bearings are correspondingly sleeved on the linear optical axis guide rail 6 and the linear optical axis guide rail 28 respectively, and trapezoidal nuts are correspondingly sleeved on the trapezoidal screw rods 26; the linear motion bearing and the trapezoidal nut are respectively and correspondingly fixedly arranged on the trapezoidal screw rod driving moving bracket 25; a power mechanism which can be rotated by a motor and drives the trapezoidal screw rod to drive the movable bracket 25 to move back and forth is formed.
Further, the top end of the staircase 39 is connected to a staircase fixing bracket 37 fixed at both ends between the driving fixing bracket 3 and the driving fixing bracket 30 via a hinge 38 and a hinge 41, respectively.
Further, one end of the driving rod linkage rod 36 and one end of the driving rod linkage rod 40 are connected with the pillars at the two sides of the stairs 39 through pins, and the other ends of the driving rod linkage rod are respectively connected with lifting lugs fixed on the trapezoidal screw rod driving moving support 25 through pins; the drive bracket of the folding stair is formed.
When the stairs need to be extended, the driving motor 1 rotates, the trapezoidal screw rod 26 is driven to rotate by the coupler on the driving shaft of the driving motor 1, the trapezoidal screw rod drives the movable support 25 to move forwards along the linear optical axis guide rail 6 and the linear optical axis guide rail 28 under the action of the coupler which is fixed with the trapezoidal screw rod driving movable support 25 and respectively sleeved on the linear optical axis guide rail 6 and the linear optical axis guide rail 28 as well as the trapezoidal nut and the linear motion bearing on the trapezoidal screw rod 26, and the stair 39 is pushed to extend outwards by the driving linkage rod 36 which is fixedly connected with the lifting lug of the trapezoidal screw rod driving movable support 25; the limit switch 7 acts, the motor 1 stops rotating, and the stair is completely stretched at the moment.
When the stair is required to be folded, the driving motor 1 rotates in the opposite direction, the trapezoidal screw rod 26 is driven to rotate in the opposite direction through the coupler on the driving shaft of the driving motor 1, the trapezoidal screw rod drives the movable support 25 to move in the opposite direction along the linear optical axis guide rail 6 and the linear optical axis guide rail 28 under the action of the trapezoidal nut and the linear motion bearing which are fixed with the trapezoidal screw rod driving movable support 25 and respectively sleeved on the linear optical axis guide rail 6 and the linear optical axis guide rail 28, the driving linkage rod 40 drives the stair to be folded inwards through the driving linkage rod 36 fixedly connected with the lifting lug of the trapezoidal screw rod driving movable support 25, and when the driving movable support 25 moves to the set limit switch 5, the motor stops rotating, and the stair is folded completely.
FIG. 6 is a perspective view of the stair installation of embodiment 2 of the foldable loft stairway of the present invention; in practice the stairway 39 may also be secured to the attic lift platform 31 by hinges 38, 41.
As shown in fig. 7, a stereo view of the extended stairs of embodiment 2 of the foldable stairway of the invention, the driving fixing support 3 and the driving fixing support 30 of the foldable stairway driving structure are respectively fixed with the lifting platform support 31 at two ends, when the foldable stairway is required to climb up and down the lifting platform of the foldable stairway, the driving motor 1 of the driving mechanism rotates to drive the stairway 39 to extend outwards, and when the driving moving support 25 moves to the predetermined limit switch 7, the motor 1 stops rotating, and at this time, the extended stairway is finished, so that the stairway can be conveniently climbed up and down; and the ladder-shaped screw rod can be automatically folded back due to the fact that the lead angle of the thread is smaller than the static friction angle and the ladder has the self-locking characteristic.
As shown in fig. 8, a folding perspective view of the stair of embodiment 2 of the foldable loft stairway of the invention, when the elevating loft platform does not need to climb up and down the stair, the driving motor 1 of the driving mechanism rotates in reverse direction to drive the stair 39 to fold inwards; when the driving movable support 25 moves to the preset limit switch 5, the motor 1 stops rotating, the stair 39 is folded and fixed at the bottom of the lifting loft lifting platform 31, the stair 39 also rises along with the lifting loft lifting platform when the lifting loft lifting platform rises, the stair 39 does not occupy indoor space, and the folded stair 39 does not slide down and extend by itself due to the fact that the thread lead angle of the trapezoidal lead screw is smaller than the static friction angle and has a self-locking characteristic.
As shown in fig. 7-8 for example 2 of a foldable loft ladder, the ladder can be folded and extended with the loft platform 31 lowered when the length of the foldable ladder 39 is no greater than the height of the raised platform from the ground after the raised loft platform is lowered.
As shown in fig. 9, right side view of extended version of example 3 of the raised loft collapsed stairway of the present invention, when the length of the collapsed stairway is greater than the height of the raised loft platform from the ground after it is lowered, it is necessary to complete the collapsing and extending of the stairway 39 after or during the raising and during the lowering of the loft platform 31.
As shown in fig. 10, a perspective view of an extended stair of embodiment 4 of the foldable stair of the loft elevator of the invention, a motor push rod 42 is used to replace a trapezoidal screw rod and a linear optical axis guide rail of a driving mechanism in embodiment 1 of the foldable stair of the loft elevator, and is used as a power driving member of the foldable stair, and two ends of a driving fixing bracket 2 are respectively and fixedly connected with a driving fixing bracket 3 and a driving fixing bracket 30; a lifting lug fixedly arranged at the middle position of the bottom of the driving fixing support 2 is connected with one end of a motor push rod 42 through a pin, the stair is respectively connected with the inner sides of the driving fixing support 30 and the driving fixing support 3 through a first driving linkage rod 11, a first driving rod linkage rod 23, a second driving linkage rod 12 and the top end of a second driving linkage rod 22 through pins, as shown in the right view after the stair is extended in the embodiment 4 of the lifting attic folding stair disclosed by the invention shown in fig. 11, and the other end of the motor push rod 42 is connected with a lifting lug fixed on a first-layer support 10 of the stair through a pin.
Furthermore, the elevating attic support 32, the elevating attic support 33, the elevating attic support 34, and the elevating attic support 35 constitute the elevating attic frame support, and the two ends of the driving fixing support 3 and the driving fixing support 30 are respectively fixed with the elevating platform support 31.
When the stairs need to be unfolded, the motor push rod 42 starts to work, the rod in the motor push rod 42 extends out to push the stairs to extend outwards, and due to the fact that the motor push rod 42 is internally provided with the limit switch and has a self-locking function, when the preset extending length is reached, the motor push rod automatically stops working, and at the moment, the stairs are completely extended, and the stairs can conveniently climb up and down.
When needing the stair to fold, the reverse power supply of motor push rod 42 begins work, and pole withdrawal drives the stair inwards to fold in the motor push rod 42, because the built-in limit switch of motor push rod and have self-locking function, when pole withdrawal to predetermined length in motor push rod 42, motor push rod automatic stop work, folding and the lift loft lift platform bottom of stair this moment, the stair no longer occupy indoor ground space, because motor push rod's self-locking characteristic, the stair can not slide the extension by oneself because of self gravity equally.
The technical contents of the present invention are further illustrated by examples only to facilitate understanding, but do not represent to limit the embodiments of the present invention thereto, and any technical extension or re-creation performed according to the present invention is protected by the present invention.
Claims (3)
1. The utility model provides a lift loft folding stair, its characterized in that includes the folding power drive mechanism of stair, realizes the folding coupling assembling of stair, loft lift platform.
2. The stair-folding power drive mechanism of claim 1 fixedly mounted to the attic lift platform.
3. The assembly of claim 1, wherein the assembly for effecting a folding connection mounts the staircase to a powered drive mechanism or a loft landing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111134501.5A CN113653276A (en) | 2021-09-27 | 2021-09-27 | Foldable stair with lifting attic |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111134501.5A CN113653276A (en) | 2021-09-27 | 2021-09-27 | Foldable stair with lifting attic |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113653276A true CN113653276A (en) | 2021-11-16 |
Family
ID=78494396
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111134501.5A Withdrawn CN113653276A (en) | 2021-09-27 | 2021-09-27 | Foldable stair with lifting attic |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113653276A (en) |
-
2021
- 2021-09-27 CN CN202111134501.5A patent/CN113653276A/en not_active Withdrawn
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20211116 |