CN111962677B

CN111962677B - Two-side opening-closing type secondary folding mechanical attic device

Info

Publication number: CN111962677B
Application number: CN202010892565.0A
Authority: CN
Inventors: 杨辉; 田文彤
Original assignee: Changzhou Institute of Technology
Current assignee: Changzhou Institute of Technology
Priority date: 2020-08-31
Filing date: 2020-08-31
Publication date: 2021-06-25
Anticipated expiration: 2040-08-31
Also published as: CN111962677A

Abstract

The invention discloses a two-side opening and closing type secondary folding mechanical attic device, and belongs to the field of architectural attics. The mechanical attic device comprises two groups of attic half-frame assemblies which are oppositely arranged, wherein the two groups of attic half-frame assemblies are rotationally connected with an inner shelf and an outer shelf, the inner shelf and the outer shelf are in linkage design by adopting an electric push rod and a connecting rod, when the inner shelf and the outer shelf are folded, the electric push rods of the two groups of attic half-frame assemblies drive a first shelf to turn upwards and fold, meanwhile, the first pulling connecting rod pulls a second pulling connecting rod to move through a sliding rod, the second pulling connecting rod drives the second shelf to turn upwards and fold for two times relative to the first shelf, the folded structure is more compact, the attic device is very suitable for attics with larger transverse size, the attic can be folded towards two sides more effectively, and the space in the height direction is not occupied; and this machinery attic device overall structure is simple, and the preparation is convenient, expandes and folding control is convenient, and the back stable in structure that expandes, bearing capacity are strong.

Description

Two-side opening-closing type secondary folding mechanical attic device

Technical Field

The invention relates to a mechanical attic, in particular to a two-side opening-closing type secondary folding mechanical attic device.

Background

At present, most of attics of buildings are integral attics structures fixed together with the buildings, and the attics structures need to occupy larger space and are generally only arranged on the top layer; and under the condition that the living space is small, the attic cannot be arranged.

With the rise of the house price, the rational application of the residential space becomes a problem to be considered by many households. Therefore, many folding furniture and the like are also introduced in the market, and the products generally adopt hidden moving modes such as hanging, folding and the like to obtain local space, but the high space of the house is difficult to be fully utilized. The mechanical attic is a feasible scheme capable of effectively utilizing the height space of a house, an upper attic is added by adding an interlayer in a floor, the upper attic can be used as a horizontal type and the like, and the actual use area of the house is increased. Due to the limitation of the height of the floor, after the interlayer is added, the height of the room which is about 3 meters originally is compressed, so that the moving height of the lower layer is limited, the space below the interlayer is restrained, and the living and moving comfort is reduced.

Therefore, most of the existing mechanical attics adopt a lifting structure, and the existing mechanical attics are lifted upwards when not used, so that the height of the lower-layer space is ensured, and the activity comfort of the lower-layer space is improved. Like the name that chinese patent number ZL201620280986.7 discloses be "an intelligent movement loft", the name that chinese patent application number 201910426981.9 discloses is "a lift loft that uses two lift posts", and the name that chinese patent application number 202010285166.8 discloses is "a domestic lift loft", etc., these over-and-under type loft structures can effectively extend the house usage space, nevertheless adopt over-and-under type mechanism, loft itself has a take the altitude, even with loft to highest position, still can reduce indoor floor height space, lead to the space of lower floor to suppress, and in order to improve loft lift stability, it controls loft elevating movement to need to set up multiunit driving motor or complicated drive mechanism usually, structural design is comparatively complicated, and the cost of manufacture is higher relatively.

Disclosure of Invention

1. Technical problem to be solved by the invention

The invention aims to overcome the defects of large floor height space occupation, poor space utilization flexibility and the like of the existing lifting type mechanical attic, and provides a two-side opening and closing type secondary folding mechanical attic device, which adopts the technical scheme of the invention, the mechanical attic device consists of two groups of attic half-frame assemblies which are oppositely arranged, the two groups of attic half-frame assemblies adopt the design of rotationally connecting an inner shelf and an outer shelf, the inner shelf and the outer shelf adopt the linkage design of an electric push rod and a connecting rod, when the inner shelf and the outer shelf are folded, the electric push rods of the two groups of attic half-frame assemblies drive a first shelf to turn upwards and fold, meanwhile, a first pulling connecting rod pulls a second pulling connecting rod through a sliding rod, the second shelf is driven by the second pulling connecting rod to turn upwards and fold for the second time relative to the first shelf, the folded structure is more compact, is very suitable for attics with larger transverse size, and can more effectively realize the folding of atti, the space in the height direction is not occupied; and this machinery attic device overall structure is simple, and the preparation is convenient, expandes and folding control is convenient, and the back stable in structure that expandes, bearing capacity are strong.

2. Technical scheme

In order to achieve the purpose, the technical scheme provided by the invention is as follows:

the invention relates to a two-side opening and closing type secondary folding mechanical attic device, which comprises two groups of attic half-frame assemblies which are oppositely arranged, wherein each attic half-frame assembly comprises an installation frame, a first interlayer frame, a second interlayer frame, an electric push rod, a first pulling connecting rod, a sliding rod, a second pulling connecting rod and a pulling mechanism, the installation frame is vertically and fixedly installed, one end of the first interlayer frame is rotatably connected with the middle part of the installation frame, the other end of the first interlayer frame is rotatably connected with one end of the second interlayer frame, one end of the electric push rod is hinged with the lower part of the installation frame, the other end of the electric push rod is hinged with the bottom part of the first interlayer frame, the electric push rod, the installation frame and the first interlayer frame form a triangular structure, the sliding rod is slidably installed on the first interlayer frame, one end of the first pulling connecting rod is hinged with the lower part of the installation frame, the other end of the first pulling connecting rod is hinged with the sliding rod, two ends of the sliding rod extend to the left side and the right side of the first interlayer frame, two ends of the sliding rod are respectively connected with the upper positions of two sides of the second interlayer frame through the second pulling connecting rod, and the pulling mechanism is arranged between the top of the installation frame and the rotating end, far away from the second interlayer frame, of the second interlayer frame and used for pulling and supporting the second interlayer frame which is unfolded to be in a horizontal state;

the two groups of attic half-frame assemblies are oppositely arranged, and when the first shelf and the second shelf on the two groups of attic half-frame assemblies are unfolded to be in a horizontal state, the second shelves on the two groups of attic half-frame assemblies are horizontally butted to form an attic interlayer; when the folding mechanism is folded, the electric push rods of the two groups of attic half-frame assemblies drive the first interlayer frame to turn upwards and fold, meanwhile, the first pulling connecting rod pulls the second pulling connecting rod to move through the sliding rod, and the second pulling connecting rod drives the second interlayer frame to turn upwards and fold for the second time relative to the first interlayer frame.

Furthermore, the first interlayer frame is provided with a guide sliding rod, the left side and the right side of the first interlayer frame are provided with guide sliding grooves, the sliding rod is installed on the guide sliding rod in a sliding mode, and two ends of the sliding rod are hinged to one end of the second pulling connecting rod after penetrating through the guide sliding grooves on the corresponding sides.

Furthermore, the left side and the right side of the installation frame are respectively provided with a group of electric push rods and a first pulling connecting rod, and the lower ends of the left side and the right side of the first interlayer frame are respectively provided with a push rod connecting seat for connecting the electric push rods.

Furthermore, the left side and the right side of the second interlayer frame are upwards fixed with a pull rod connecting seat, and the second pulling connecting rod is hinged with the upper part of the pull rod connecting seat on the corresponding side.

Furthermore, the left side and the right side of the second interlayer frame of the traction mechanism are respectively provided with a group of traction mechanisms, each traction mechanism comprises a first support pull rod and a second support pull rod, one end of each first support pull rod is hinged with the side wall of the second interlayer frame, the other end of each first support pull rod is hinged with one end of each second support pull rod, and the other end of each second support pull rod is hinged with the top of the mounting frame; when the second interlayer frame is unfolded to be in a horizontal state, the first supporting pull rod and the second supporting pull rod are positioned on the same straight line.

Furthermore, one of the two sets of loft half-frame assemblies is provided with a loft entrance on the first shelf, and a telescopic stair is arranged at the loft entrance.

Further, telescopic stair include the flexible complex telescopic joint subassembly of stair mounting bracket and a plurality of section head and the tail, the telescopic joint subassembly include two parallel arrangement's telescopic joint pole and connect the stair horizontal pole between two telescopic joint poles, each group the telescopic joint subassembly between loop through the telescopic joint pole and telescopically cup joint, every group the telescopic joint pole of telescopic joint subassembly on all be equipped with flexible spacing groove along length direction, the stair horizontal pole both ends of the telescopic joint subassembly that is located the below are all spacing at the flexible spacing inslot of adjacent top telescopic joint subassembly.

3. Advantageous effects

Compared with the prior art, the technical scheme provided by the invention has the following remarkable effects:

(1) the invention relates to a two-side opening-closing type secondary folding mechanical attic device, which comprises two groups of attic half-frame assemblies which are oppositely arranged, wherein the two groups of attic half-frame assemblies are both designed by rotationally connecting an inner shelf and an outer shelf, the inner shelf and the outer shelf are designed by adopting an electric push rod and a connecting rod in a linkage manner, and when a first shelf and a second shelf on the two groups of attic half-frame assemblies are unfolded to be in a horizontal state, the second shelves on the two groups of attic half-frame assemblies are horizontally butted to form attic interlayers; when the inner shelf and the outer shelf are folded, the electric push rods of the two groups of attic half-frame assemblies drive the first shelf to turn upwards and fold, meanwhile, the first pulling connecting rod pulls the second pulling connecting rod to move through the sliding rod, and the second pulling connecting rod drives the second shelf to turn upwards and fold for a second time relative to the first shelf; moreover, the mechanical attic device has the advantages of simple overall structure, convenient manufacture, convenient control of unfolding and folding, stable structure after unfolding and strong bearing capacity;

(2) according to the two-side opening and closing type secondary folding mechanical attic device, the guide slide rods are arranged on the first shelf, the guide slide grooves are formed in the left side and the right side of the first shelf, the slide rods are slidably mounted on the guide slide rods, two ends of each slide rod penetrate through the corresponding guide slide grooves and then are hinged to one end of the second pulling connecting rod, the slide rods are used for connecting the second pulling connecting rods on the two sides, the second shelf is driven to move from the two sides, the structure is more stable, the folding and unfolding actions of the second shelf are more coordinated, and the folding and unfolding motion stability of the mechanical attic device is improved;

(3) according to the two-side opening-closing type secondary folding mechanical attic device, the left side and the right side of the installation frame are respectively provided with the group of electric push rods and the first pulling connecting rods, the lower ends of the left side and the right side of the first shelf are respectively provided with the push rod connecting seats for connecting the electric push rods, the two groups of electric push rods and the first pulling connecting rods are adopted to drive the shelves, the shelves are supported and driven more stably, and the carrying capacity is higher when the shelves are unfolded to be used as attics;

(4) according to the two-side opening and closing type secondary folding mechanical attic device, the pull rod connecting seats are upwards fixed on the left side and the right side of the second shelf, the second pulling connecting rod is hinged with the upper parts of the pull rod connecting seats on the corresponding sides, the hinged positions are lifted by utilizing the pull rod connecting seats, so that the second pulling connecting rod can better pull the second shelf to overturn and fold, and the folding action is more stable and reliable;

(5) according to the two-side opening-closing type secondary folding mechanical attic device, the drawing mechanisms are respectively provided with one group at the left side and the right side of the second shelf and consist of the first support pull rod and the second support pull rod, the stability of the second shelf after being unfolded is effectively improved by using the drawing mechanisms, and the bearing capacity of the attic is greatly improved; the design of two sections of supporting pull rods is adopted, so that the pull rod is high in strength, strong in bearing capacity and convenient to fold;

(6) according to the two-side opening-closing type secondary folding mechanical attic device, the first shelf of one of the two sets of attic half-frame assemblies is also provided with an attic inlet, a telescopic stair is installed at the attic inlet, so that attics can conveniently come in and go out, the telescopic stair is simple to operate, and the occupied space after folding is small;

(7) the invention relates to a two-side opening and closing type secondary folding mechanical attic device, wherein a telescopic stair comprises a stair mounting frame and a plurality of telescopic joint components which are in head-to-tail telescopic fit, each telescopic joint component comprises two telescopic joint rods which are arranged in parallel and a stair cross rod connected between the two telescopic joint rods, each group of telescopic joint components are sequentially in telescopic sleeve joint through the telescopic joint rods, the telescopic joint rods of each group of telescopic joint components are respectively provided with a telescopic limiting groove along the length direction, and two ends of the stair cross rod of the telescopic joint component positioned at the lower part are limited in the telescopic limiting grooves of the telescopic joint components positioned at the upper part; the telescopic stair has simple structural design, compact structure after telescopic folding, and flexible and convenient folding and unfolding operation.

Drawings

Fig. 1 is a schematic perspective view of an unfolded state of a two-side opening and closing type secondary folding mechanical attic device according to the present invention;

fig. 2 is a schematic view of an unfolded state of an attic half-frame assembly in a two-side opening-closing type secondary folding mechanical attic device of the present invention;

FIG. 3 is a schematic view of the folding position of the attic half-frame assembly in the two-side opening and closing type secondary folding mechanical attic device of the present invention;

fig. 4 is a schematic structural diagram of a retractable staircase in a two-side-openable-and-closable secondary folding mechanical attic device according to the present invention.

The reference numerals in the schematic drawings illustrate:

1. an attic half-frame assembly; 1-1, mounting a frame; 1-2, a first interlayer frame; 1-2-1, a push rod connecting seat; 1-2-2, a guide chute; 1-3, a second interlayer frame; 1-3-1, a pull rod connecting seat; 1-4, an electric push rod; 1-5, a first pulling connecting rod; 1-6, a sliding rod; 1-7, a guide slide rod; 1-8, a second pull connecting rod; 1-9, a first support pull rod; 1-10, a second support pull rod;

2. a telescopic staircase; 2-1, a stair mounting rack; 2-2, a telescopic joint component; 2-2-1, a telescopic rod; 2-2-2, stair rails; 2-2-3, a telescopic limit groove.

Detailed Description

For a further understanding of the invention, reference should be made to the following detailed description taken in conjunction with the accompanying drawings and examples.

[ examples ]

Referring to fig. 1 to 3, the two-side opening-closing type secondary folding mechanical attic device of the present embodiment includes two sets of attic half-frame assemblies 1 disposed oppositely, the two sets of attic half-frame assemblies 1 constitute a mechanical attic device, the two sets of attic half-frame assemblies 1 can be fixed on the wall respectively, or the two sets of attic half-frame assemblies 1 can be connected together by a cross beam to form a mechanical attic device with an integral structure. The loft half-frame assembly 1 comprises an installation frame 1-1, a first loft frame 1-2, a second loft frame 1-3, an electric push rod 1-4, a first pulling connecting rod 1-5, a sliding rod 1-6, a second pulling connecting rod 1-8 and a pulling mechanism, wherein the installation frame 1-1 is vertically and fixedly installed, the installation frame 1-1 can be a rectangular frame and can be directly fixed on a wall according to different requirements, or a cross beam can be utilized to connect the installation frames 1-1 of the two loft half-frame assemblies 1 to form an integral frame structure, one end of the first loft frame 1-2 is rotatably connected with the middle part of the installation frame 1-1, the other end of the first loft frame 1-2 is rotatably connected with one end of the second loft frame 1-3, the second loft frame 1-3 on the two loft half-frame assemblies 1 is opposite, can be horizontally butted when being unfolded; one end of an electric push rod 1-4 is hinged with the lower part of an installation frame 1-1, the other end of the electric push rod 1-4 is hinged with the bottom of a first interlayer frame 1-2, the electric push rod 1-4, the installation frame 1-1 and the first interlayer frame 1-2 form a triangular structure, the first interlayer frame 1-2 can be driven to turn over through the extension and retraction of the electric push rod 1-4, the first interlayer frame 1-2 is turned over and folded upwards and turned over and unfolded downwards, a sliding rod 1-6 is slidably installed on the first interlayer frame 1-2, the sliding direction of the sliding rod 1-6 is the direction in which two groups of attic half frame assemblies 1 are oppositely installed, one end of a first pulling connecting rod 1-5 is hinged with the lower part of the installation frame 1-1, the other end of the first pulling connecting rod 1-5 is hinged with the sliding rod 1-6, in the overturning process of the first interlayer frame 1-2, the first pulling connecting rod 1-5 can drive the sliding rod 1-6 to slide on the first interlayer frame 1-2, two ends of the sliding rod 1-6 extend to the left side and the right side of the first interlayer frame 1-2, two ends of the sliding rod 1-6 are respectively connected with the upper positions of two sides of the second interlayer frame 1-3 through the second pulling connecting rod 1-8, in the sliding process of the sliding rod 1-6, the sliding rod 1-6 drives the second pulling connecting rod 1-8 to move, and further drives the second interlayer frame 1-3 to overturn relative to the first interlayer frame 1-2; the traction mechanism is arranged between the top of the mounting frame 1-1 and the rotating end, far away from the second interlayer frame 1-3, of the second interlayer frame 1-3, and is used for carrying out traction support on the second interlayer frame 1-3 which is unfolded to be in a horizontal state. The two groups of attic half-frame assemblies 1 are oppositely arranged, and when the first shelf 1-2 and the second shelf 1-3 on the two groups of attic half-frame assemblies 1 are unfolded to be in a horizontal state, the second shelves 1-3 on the two groups of attic half-frame assemblies 1 are horizontally butted to form an attic interlayer; when the folding device is folded, the electric push rods 1-4 of the two attic half-frame assemblies 1 drive the first interlayer frame 1-2 to turn upwards and fold, meanwhile, the first pulling connecting rod 1-5 pulls the second pulling connecting rod 1-8 to move through the sliding rod 1-6, and the second pulling connecting rod 1-8 drives the second interlayer frame 1-3 to turn upwards and fold for the second time relative to the first interlayer frame 1-2. The loft half-frame assembly 1 is shown in an expanded configuration in figure 2 and in a collapsed configuration in figure 3. By adopting the two-side opening and closing type secondary folding mechanical attic device, the two groups of attic half-frame assemblies 1 are in a rotary connection design with the inner and outer shelf frames, the inner and outer shelf frames are in a linkage design by adopting an electric push rod and a connecting rod, the folding structure is more compact, the attic device is very suitable for attics with larger transverse sizes, and when the sum of the lengths of the first shelf frame 1-2 and the second shelf frame 1-3 is larger than the upper height of the attic, the attic can be more effectively folded towards two sides without occupying the space in the height direction; and this machinery attic device overall structure is simple, and the preparation is convenient, expandes and folding control is convenient, and the back stable in structure that expandes, bearing capacity are strong.

As shown in fig. 1, 2 and 3, in the present embodiment, the first shelf 1-2 is provided with a slide guide bar 1-7, the left side and the right side of the first interlayer frame 1-2 are provided with guide sliding chutes 1-2-2, two guide sliding rods 1-7 are preferably arranged in parallel, the sliding rods 1-6 are slidably arranged on the guide sliding rods 1-7, and two ends of the sliding rod 1-6 are hinged with one end of the second pulling connecting rod 1-8 after passing through the guide chute 1-2-2 at the corresponding side, therefore, one sliding rod 1-6 can simultaneously drive the second pulling connecting rods 1-8 on two sides to move, and the second shelf frames 1-3 are driven to move from two sides, so that the structure is more stable, the folding and unfolding actions of the second shelf frames 1-3 are more coordinated, and the folding and unfolding motion stability of the mechanical attic device is improved. In addition, in order to improve the folding and unfolding stability of the attic, the left side and the right side of the installation frame 1-1 are respectively provided with a group of electric push rods 1-4 and first pulling connecting rods 1-5, the lower ends of the left side and the right side of the first interlayer frame 1-2 are respectively provided with a push rod connecting seat 1-2-1 for connecting the electric push rods 1-4, the first interlayer frame 1-2 can be better turned upwards by adopting the push rod connecting seat 1-2-1, meanwhile, the interlayer frame is driven by adopting the two groups of electric push rods 1-4 and the first pulling connecting rods 1-5, the interlayer frame is more stably supported and driven, and the carrying capacity is stronger when the installation frame is unfolded to be used as the attic. Preferably, the left side and the right side of the second interlayer frame 1-3 are upwards fixed with a pull rod connecting seat 1-3-1, the second pull connecting rod 1-8 is hinged with the upper part of the pull rod connecting seat 1-3-1 on the corresponding side, and the hinged position is lifted by utilizing the pull rod connecting seat 1-3-1, so that the second pull connecting rod 1-8 can better pull the second interlayer frame 1-3 to turn and fold, and the folding action is more stable and reliable.

In this embodiment, the pulling mechanism may be designed by a flexible rope or a chain, which effectively improves the stability of the second shelves 1-3 after being deployed, and greatly improves the load-bearing capacity of the attic. As shown in fig. 2 and fig. 3, in the present embodiment, preferably, the pulling mechanism is provided with a group on each of the left and right sides of the second shelf 1-3, and includes a first supporting rod 1-9 and a second supporting rod 1-10, one end of the first supporting rod 1-9 is hinged to the sidewall of the second shelf 1-3, the other end of the first supporting rod 1-9 is hinged to one end of the second supporting rod 1-10, and the other end of the second supporting rod 1-10 is hinged to the top of the mounting frame 1-1; when the second interlayer frame 1-3 is unfolded to be in a horizontal state, the first supporting pull rod 1-9 and the second supporting pull rod 1-10 are positioned on the same straight line, and the supporting pull rod is used as a traction mechanism, so that the pull rod is high in strength, strong in bearing capacity and convenient to fold.

Referring to fig. 1 and 4, in the present embodiment, in order to facilitate the entrance and exit of the attic, an attic entrance is further provided on the first shelf 1-2 of one of the two attic half frame assemblies 1, and a retractable stair 2 is installed at the attic entrance to facilitate the entrance and exit of the attic. The telescopic stair 2 can adopt the existing attic scissors type stairs, in the embodiment, the telescopic stair with a novel structure is provided, the telescopic stair 2 comprises a stair mounting rack 2-1 and a plurality of telescopic joint components 2-2 which are matched with each other in an end-to-end telescopic way, the stair mounting rack 2-1 is used for being connected with a first interlayer rack 1-2, the telescopic joint components 2-2 comprise two telescopic joint rods 2-2-1 which are arranged in parallel and a stair cross rod 2-2-2 which is connected between the two telescopic joint rods 2-2-1, each group of telescopic joint components 2-2 are sleeved with each other in a telescopic way through the telescopic joint rods 2-2-1 in sequence, the telescopic joint rod 2-2-1 of each group of telescopic joint components 2-2 is provided with a telescopic limit groove 2-2-3 along the length direction, the two ends of the stair cross bar 2-2-2 of the telescopic joint component 2-2 positioned at the lower part are limited in the telescopic limiting grooves 2-2-3 of the telescopic joint components 2-2 positioned at the upper part, and the telescopic joint component 2-2 positioned at the uppermost part is rotatably connected with the stair mounting frame 2-1. When the telescopic stair 2 is folded, pushing the telescopic joint assembly 2-2 at the lowest part upwards to enable each telescopic joint assembly 2-2 to be contracted, and then upwards rotating and fixing the telescopic joint assemblies on a stair mounting frame 2-1; the telescopic joint component 2-2 is pulled down during the use process.

The mechanical attic device comprises two sets of attic half-frame assemblies which are oppositely arranged, wherein the two sets of attic half-frame assemblies are rotationally connected by adopting inner and outer shelf frames, the inner and outer shelf frames are in linkage design by adopting an electric push rod and a connecting rod, when the inner and outer shelf frames are folded, the electric push rods of the two sets of attic half-frame assemblies drive the first shelf frame to turn upwards and fold, meanwhile, the first pulling connecting rod pulls the second pulling connecting rod to move through a sliding rod, and the second pulling connecting rod drives the second shelf frame to turn upwards and fold twice relative to the first shelf frame; and this machinery attic device overall structure is simple, and the preparation is convenient, expandes and folding control is convenient, and the back stable in structure that expandes, bearing capacity are strong.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

The present invention and its embodiments have been described above schematically, without limitation, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching, without departing from the spirit of the invention, the person skilled in the art shall not inventively design the similar structural modes and embodiments to the technical solution, but shall fall within the scope of the invention.

Claims

1. The utility model provides a both sides switching formula secondary folding machinery loft device which characterized in that: the device comprises two sets of loft half-frame assemblies (1) which are oppositely arranged, wherein each loft half-frame assembly (1) comprises an installation frame (1-1), a first interlayer frame (1-2), a second interlayer frame (1-3), an electric push rod (1-4), a first pulling connecting rod (1-5), a sliding rod (1-6), a second pulling connecting rod (1-8) and a pulling mechanism, the installation frame (1-1) is vertically and fixedly installed, one end of the first interlayer frame (1-2) is rotatably connected with the middle part of the installation frame (1-1), the other end of the first interlayer frame (1-2) is rotatably connected with one end of the second interlayer frame (1-3), one end of the electric push rod (1-4) is hinged with the lower part of the installation frame (1-1), the other end of the electric push rod (1-4) is hinged with the bottom of the first interlayer frame (1-2), the electric push rod (1-4), the installation frame (1-1) and the first interlayer frame (1-2) form a triangular structure, the sliding rod (1-6) is installed on the first interlayer frame (1-2) in a sliding mode, one end of the first pulling connecting rod (1-5) is hinged with the lower portion of the installation frame (1-1), the other end of the first pulling connecting rod (1-5) is hinged with the sliding rod (1-6), the two ends of the sliding rod (1-6) extend to the left side and the right side of the first interlayer frame (1-2), and the two ends of the sliding rod (1-6) are connected with the upper positions of the two sides of the second interlayer frame (1-3) through the second pulling connecting rod (1-8) respectively, the traction mechanism is arranged between the top of the installation frame (1-1) and the rotating end, far away from the second interlayer frame (1-3), of the second interlayer frame (1-3), and is used for carrying out traction support on the second interlayer frame (1-3) which is unfolded to be in a horizontal state;

the two groups of attic half-frame assemblies (1) are oppositely arranged, and when the first shelf (1-2) and the second shelf (1-3) on the two groups of attic half-frame assemblies (1) are unfolded to be in a horizontal state, the second shelves (1-3) on the two groups of attic half-frame assemblies (1) are horizontally butted to form an attic interlayer; when the folding device is folded, the electric push rods (1-4) of the two groups of attic half-frame assemblies (1) drive the first interlayer frame (1-2) to turn upwards and fold, meanwhile, the first pulling connecting rod (1-5) pulls the second pulling connecting rod (1-8) to move through the sliding rod (1-6), and the second pulling connecting rod (1-8) drives the second interlayer frame (1-3) to turn upwards and fold for the second time relative to the first interlayer frame (1-2).

2. A two-sided, open-and-close, secondary folding mechanical attic device as claimed in claim 1, wherein: the first interlayer frame (1-2) is provided with a guide sliding rod (1-7), the left side and the right side of the first interlayer frame (1-2) are provided with guide sliding grooves (1-2-2), the sliding rod (1-6) is installed on the guide sliding rod (1-7) in a sliding mode, and two ends of the sliding rod (1-6) penetrate through the guide sliding grooves (1-2-2) on the corresponding sides and then are hinged to one end of a second pulling connecting rod (1-8).

3. A two-sided, open-and-close, secondary folding mechanical attic device as claimed in claim 2, wherein: the left side and the right side of the installation frame (1-1) are respectively provided with a group of electric push rods (1-4) and first pulling connecting rods (1-5), and the lower ends of the left side and the right side of the first interlayer frame (1-2) are respectively provided with a push rod connecting seat (1-2-1) for connecting the electric push rods (1-4).

4. A two-sided, open-and-close, secondary folding mechanical attic device as claimed in claim 3, wherein: the left side and the right side of the second interlayer frame (1-3) are upwards fixed with a pull rod connecting seat (1-3-1), and the second pull connecting rod (1-8) is hinged with the upper part of the pull rod connecting seat (1-3-1) on the corresponding side.

5. The two-sided openable-closeable secondary folding mechanical attic device of claim 4, wherein: the left side and the right side of the second interlayer frame (1-3) of the traction mechanism are respectively provided with a group of traction mechanisms, each traction mechanism comprises a first support pull rod (1-9) and a second support pull rod (1-10), one end of each first support pull rod (1-9) is hinged with the side wall of the second interlayer frame (1-3), the other end of each first support pull rod (1-9) is hinged with one end of each second support pull rod (1-10), and the other end of each second support pull rod (1-10) is hinged with the top of the installation frame (1-1); when the second interlayer frame (1-3) is unfolded to be in a horizontal state, the first supporting pull rod (1-9) and the second supporting pull rod (1-10) are positioned on the same straight line.

6. A two-sided, open-and-close, secondary folding mechanical attic device according to any of claims 1 to 5, wherein: an attic entrance is also arranged on the first shelf (1-2) of one of the two groups of attic half-frame assemblies (1), and a telescopic stair (2) is arranged at the attic entrance.

7. The two-sided openable-closeable secondary folding mechanical attic device of claim 6, wherein: the telescopic stair (2) comprises a stair mounting frame (2-1) and a plurality of telescopic joint components (2-2) in head-to-tail telescopic cooperation, each telescopic joint component (2-2) comprises two telescopic joint rods (2-2-1) arranged in parallel and a stair cross rod (2-2-2) connected between the two telescopic joint rods (2-2-1), each group of telescopic joint components (2-2) are sequentially sleeved in a telescopic mode through the telescopic joint rods (2-2-1), each group of telescopic joint components (2-2) is provided with telescopic limiting grooves (2-2-3) along the length direction, and the two ends of the stair cross rod (2-2-2) of the telescopic joint component (2-2) located below are limited at the telescopic limiting limit of the telescopic joint component (2-2) located above the adjacent telescopic joint component (2-2) Is positioned in the groove (2-2-3).