Telescopic lift car and elevator mechanism for existing residence reconstruction

Abstract

The utility model relates to a telescopic lift car and an elevator mechanism used for existing residence transformation, the telescopic lift car can be at least used for existing residence elevator transformation, and the telescopic lift car comprises a frame body and at least one folding and unfolding side wall assembly. The side wall folding and unfolding assemblies are located on the side face of the frame body to form one side wall of the telescopic lift car, and at least one side wall folding and unfolding assembly is configured to be capable of forming the side wall, opposite to an elevator door, of the telescopic lift car. The folding and unfolding side wall assembly is configured to be at least capable of being opened and extending outwards so as to increase the size of the telescopic lift car.

Description

Technical Field

[0001] The utility model relates to the technical field of retrofitting existing residential elevators, in particular to a telescopic elevator car and an elevator mechanism for renovating existing residential buildings. Background Art

[0002] At present, my country is in a stage of rapid aging, and with the decline in birth rate, increase in labor costs, and intensification of population aging, the demand for installing elevators in old residential buildings is increasing. On the one hand, it meets the rigid demand for barrier-free use by residents in an aging society, and on the other hand, it is also an urgent need for the scarcity of young physical labor and high porter costs in the future. Due to the cramped space around existing residential buildings, the size of traditional residential elevators often cannot meet the needs of laying medical emergency stretchers flat and carrying large furniture and equipment. In other words, at present, there is a contradiction between the small size of the elevators installed in old communities and the large demand capacity. Installing elevators in old residential buildings is an important measure to improve the quality of living and meet the travel needs of residents, especially the elderly. However, there are indeed some problems in the implementation process, such as the contradiction between cramped space and laying stretchers flat and carrying large-scale furniture. In old residential areas, especially in early multi-story residential designs, the scale of elevators installed is limited. Due to factors such as residential spacing, fire lanes, lighting requirements, and cost requirements, large-scale elevators cannot be installed. Small elevators of 630kg and 800kg or elevators without machine rooms have become the first choice for installation in old residential areas. However, the length and width of these elevator cabins are usually 1400mm×1100mm (the size of a 630kg cabin) or 1400mm×1300mm (the size of an 800kg cabin). Although they can meet ordinary use needs, the cabin size is difficult to accommodate the need to lay a stretcher flat (the size of a medical stretcher when laid flat is 1800~2000mm×500~600mm) or the transportation needs of larger furniture. Utility Model Content

[0003] In view of the above analysis, the utility model aims to provide a retractable car and an elevator mechanism for renovating an existing residential building, so as to solve at least one of the above problems.

[0004] The purpose of this utility model is mainly achieved through the following technical solutions:

[0005] The utility model provides a retractable car, which can be used at least for elevator reconstruction of existing residences, the retractable car comprises a frame body and at least one retractable side wall assembly, the retractable side wall assembly is located on the side of the frame body to form a side wall of the retractable car, wherein at least one retractable side wall assembly is configured to form a side wall of the retractable car opposite to the elevator door;

[0006] The retractable side wall assembly is configured to at least be able to be opened and extended outwardly so as to increase the volume of the retractable car.

[0007] Further, the retractable car includes a first state and a second state, and the retractable car is configured so that at least its depth can be changed with switching between the first state and the second state;

[0008] The retractable side wall assembly includes a tightened state and an extended state. When the retractable car is in the first state, the retractable side wall assembly is in the tightened state; when the retractable car is in the second state, the retractable side wall assembly is in the extended state.

[0009] The telescopic car has a depth when it is in the first state that is smaller than the depth when it is in the second state.

[0010] Further, part of the retractable side wall assembly is rotatably connected to one side of the frame body;

[0011] When the retractable side wall assembly is in a tightened state, the retractable side wall assembly is configured to at least close the side connected to the frame body;

[0012] When the retractable side wall assembly is in the extended state, the retractable side wall assembly extends outward to form an extension portion of the retractable car, and at least a portion of the retractable side wall assembly forms a bottom plate of the extension portion, and at least a portion of the retractable side wall assembly forms a side wall of the extension portion.

[0013] Furthermore, the retractable side wall assembly includes a first exhibition stand and a second exhibition stand arranged up and down;

[0014] The bottom end of the second booth is rotatably connected to the bottom of the frame body, the top end of the second booth is rotatably connected to the bottom end of the first booth, and the top end of the first booth is a free end;

[0015] The side end of the first exhibition stand is rotatably connected to the frame body via a rotating connecting rod;

[0016] When the retractable side wall assembly is in the tightened state, the first exhibition platform and the second exhibition platform are relatively located in the same plane up and down, and together constitute the side wall of the retractable car in the first state;

[0017] When the retractable side wall assembly is in the extended state, the first stand is perpendicular to the second stand, the second stand constitutes the bottom plate of the retractable car in the second state, the first stand constitutes the side wall of the retractable car in the second state, and the rotating connecting rod is located between the first stand and the frame body;

[0018] Preferably, an outer edge of the frame body is provided with an assembly groove for accommodating the rotating connecting rod.

[0019] Further, the telescopic car further comprises a cable assembly, wherein the cable assembly is configured to at least constitute a part of the left side wall or the right side wall of the extension portion;

[0020] The cable assembly includes a stowed state and an extended state;

[0021] In the retracted state, the cable assembly is configured to be folded and embedded in the first exhibition stand and the rotating connecting rod, or the cable assembly is configured to be folded and embedded in the second exhibition stand and the frame body, so that the first exhibition stand and the second exhibition stand can be attached to the frame body, and the retractable side wall assembly is in a tightened state;

[0022] In the extended state, the cable assembly is configured to be able to be extended between the first stand and the rotating connecting rod, or the cable assembly is configured to be able to be extended between the second stand and the frame body to strengthen the connection strength of the extension part, and the stowed side wall assembly is in the extended state;

[0023] Preferably, the switching between the retracted state and the extended state of the cable assembly is performed synchronously with the switching between the retracted state and the extended state of the retractable side wall assembly;

[0024] Preferably, the cable assembly comprises a folding pull rod portion and a pull rope portion;

[0025] The folding pull rod portion includes a first pull rod and a second pull rod, and the pull rope portion includes a plurality of pull ropes arranged in parallel, the lengths of the plurality of pull ropes are different, and the closer the pull rope is to the folding pull rod portion, the longer the pull rope is;

[0026] One end of the first pull rod is rotatably connected to the bottom of the side end of the first booth, the other end of the first pull rod is rotatably connected to one end of the second pull rod, and the other end of the second pull rod is rotatably connected to the bottom end of the rotating connecting rod; one end of the pull rope is connected to the side end of the first booth, and the other end of the pull rope is connected to the rotating pull rod; when the first pull rod is in the retracted state, the first pull rod is embedded in the side end of the first booth, and the second pull rod is embedded in the rotating connecting rod, a part of the pull rope part is limited by the first pull rod and embedded in the side end of the first booth, and the other part of the pull rope part is limited by the second pull rod and embedded in the rotating connecting rod; when the pull rod is in the opened state, the first pull rod and the second pull rod are colinear to form the diagonal line of the left side wall or the right side wall of the extended part, and the pull rope of the pull rope part is stretched and tightened in parallel in the triangular frame formed by the side end of the first booth, the rotating connecting rod and the folding pull rod part, and the pull rope is parallel to the diagonal line formed by the folding pull rod part;

[0027] Alternatively, one end of the first pull rod is rotatably connected to the top of the side end of the second exhibition stand, the other end of the first pull rod is rotatably connected to one end of the second pull rod, and the other end of the second pull rod is rotatably connected to the outer edge of the frame body at a position just below the rotating connecting rod and in contact with each other; one end of the pull rope is connected to the side end of the second exhibition stand, and the other end of the pull rope is connected to the outer edge of the frame body; when in the retracted state, the first pull rod is embedded in the side end of the second exhibition stand, and the second pull rod is embedded in the outer edge of the frame body, a part of the pull rope part is limited by the first pull rod to be embedded in the side end of the second exhibition stand, and the other part of the pull rope part is limited by the second pull rod to be embedded in the outer edge of the frame body, and the embedding position is located below the assembly groove; when in the opened state, the first pull rod and the second pull rod are colinear to form a diagonal line of the left side wall or the right side wall of the extended part, and the pull rope of the pull rope part is stretched and tightened in parallel in the triangular frame formed by the side end of the second exhibition stand, the outer edge of the frame body, and the folding pull rod part, and the pull rope is parallel to the diagonal line formed by the folding pull rod part;

[0028] Preferably, two groups of oppositely arranged cable assemblies are respectively provided on the left and right sides of the extension part.

[0029] Furthermore, a shielding plate is provided on the top of the frame body;

[0030] The shielding plate includes an open state and a closed state;

[0031] In the closed state, the shielding plate is configured to be embedded in or folded on the top of the frame body;

[0032] In the open state, the shielding plate is configured to be able to extend from the top of the frame body, and the shielding plate can completely cover the second exhibition stand when projected downward;

[0033] The open state of the shielding plate can only be achieved when the retractable side wall assembly is in the extended state;

[0034] Preferably, the shielding plate includes a flat plate portion and a pull plate portion, one end of the flat plate portion is slidably connected to the top of the frame body, the other end of the flat plate portion is connected to the pull plate portion, and the flat plate portion is arranged parallel to the top plate of the retractable car.

[0035] Furthermore, a deformable shielding shed is provided between the frame body and the first exhibition stand;

[0036] The shelter canopy includes a folded state and an extended state;

[0037] In the folded state, the shelter is configured to be foldable between the frame body, the rotating connecting rod and the first exhibition stand;

[0038] In the expanded state, the shelter is configured such that one end of the shelter is connected to the upper part of the frame body, and the other end of the shelter is connected to the top of the first stand and the rotating connecting rod, so as to make the extension and part of the top of the retractable car airtight;

[0039] The open state of the shelter can only be achieved when the retractable side wall assembly is in the extended state;

[0040] Preferably, the switching between the folded state and the expanded state of the shelter is performed synchronously with the switching between the retracted state and the extended state of the retractable side wall assembly;

[0041] Preferably, the shelter includes a flexible film layer and a plurality of support bars for supporting the flexible film layer, the support bars are semi-frame-shaped, and the shape of the support bars matches the frame body; the two ends of the support bars are rotatably connected to the two outer edges of the frame body respectively, the edge of the flexible film layer is connected to the upper part of the frame body, the top of the first booth, and a closed frame formed by a rotating connecting rod, and a plurality of support bars span the flexible film layer and are fixedly connected to the flexible film layer.

[0042] The utility model also provides an elevator mechanism for renovating an existing residential building, comprising:

[0043] The above-mentioned retractable car;

[0044] An elevator shaft cooperates with the retractable car.

[0045] Further, the elevator shaft is a rectangular column with at least one side open;

[0046] The retractable side wall assembly is arranged on the side wall of the retractable car, and the open side of the elevator shaft cooperates with the side wall of the retractable car provided with the retractable side wall assembly, so that the retractable car can pass through the elevator shaft without obstacles.

[0047] Furthermore, two opposite sides of the elevator shaft that are not open are provided with pipe shafts for installing elevator counterweights and / or existing residential non-gravity pipelines;

[0048] The cavity wall of the tube well is provided with a first detection door;

[0049] The side wall of the telescopic car is provided with a second detection door matched with the first detection door.

[0050] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects: a retractable car with controllable depth is adopted, and the retractable side wall assembly of the retractable car does not extend outward under normal use conditions, that is, the depth of the retractable car is small at this time; under special use conditions, the retractable side wall assembly of the retractable car extends outward to expand the depth length to meet special use conditions. Such a setting can meet a variety of use scenarios without increasing the volume occupied by the elevator mechanism outside the existing residence, and improve the user experience of the residents.

[0051] In the present invention, the above-mentioned technical solutions can also be combined with each other to achieve more preferred combination solutions. Other features and advantages of the present invention will be described in the following content, and some advantages can be obvious from the description or understood by implementing the present invention. The purpose and other advantages of the present invention can be achieved and obtained through the contents specifically pointed out in the text and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] The accompanying drawings are only used for the purpose of illustrating specific embodiments and are not to be considered as limiting the present invention. In the entire drawings, the same reference symbols represent the same components.

[0053] Figure 1 It is a simplified diagram of the process of using the elevator mechanism under special use conditions in a specific implementation mode;

[0054] Figure 2 It is a partial schematic diagram of an elevator mechanism with a shelter canopy in a specific implementation manner (the retractable car is in a first state);

[0055] Figure 3 It is a partial schematic diagram of an elevator mechanism with a shelter canopy in a specific implementation manner (the retractable car is in the process of switching between two states);

[0056] Figure 4 It is a partial schematic diagram of an elevator mechanism with a shelter canopy in a specific embodiment (the retractable car is in the second state);

[0057] Figure 5 It is a partial schematic diagram of an elevator mechanism provided with a shielding plate in a specific embodiment (the retractable car is in a first state);

[0058] Figure 6 It is a partial schematic diagram of an elevator mechanism (a retractable car in the process of switching between two states) provided with a shielding plate in a specific implementation manner;

[0059] Figure 7 It is a partial schematic diagram (I) of an elevator mechanism with a shielding plate in a specific embodiment (the retractable car is in the second state);

[0060] Figure 8 It is a partial schematic diagram (II) of an elevator mechanism with a shielding plate in a specific embodiment (the retractable car is in the second state);

[0061] Fig. 9 It is a cross-sectional view of an existing residential building equipped with an elevator renovation system in a specific implementation method, wherein the left picture is the first floor and the right picture is the floors above one floor.

[0062] Reference numerals:

[0063] 1- elevator shaft; 101- pipe shaft; 2- retractable car; 21- retractable side wall assembly; 211- first exhibition stand; 212- second exhibition stand; 22- frame body; 23- rotating connecting rod; 24- cable assembly; 241- folding pull rod part; 242- pull rope part; 25- shelter shed; 251- flexible film layer; 252- support bar; 26- shield plate; 261- flat plate part; 262- pull plate part; 263- flexible sheet; 264- lamp; 3- existing residence; 31- docking platform. DETAILED DESCRIPTION

[0064] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of the present invention and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not used to limit the scope of the present invention.

[0065] In the description of the embodiments of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the term "connected" should be understood in a broad sense, for example, it can be a fixed connection, or a detachable connection, or an integral connection can be a mechanical connection, or an electrical connection can be a direct connection, or it can be indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0066] The terms "top", "bottom", "above", "lower", and "on" used throughout the description are relative to the relative positions of components of a device, such as the relative positions of the top and bottom substrates within a device. It is understood that devices are multifunctional regardless of their orientation in space.

[0067] The common working surface of the utility model can be a plane or a curved surface, can be inclined, or can be horizontal. For the convenience of description, the embodiment of the utility model is placed on a horizontal plane and used on the horizontal plane, and "high and low" and "up and down" are defined in this way.

[0068] Embodiment 1

[0069] This embodiment discloses a retractable car, such as Figures 1 to 8As shown, it can at least be used for elevator renovation of an existing residence 3, the retractable car 2 includes a frame body 22 and at least one retractable side wall assembly 21, the retractable side wall assembly 21 is located on the side of the frame body 22 to form a side wall of the retractable car 2, wherein at least one retractable side wall assembly 21 is configured to form a side wall of the retractable car 2 opposite to the elevator door;

[0070] The retractable side wall assembly 21 is configured to at least be able to be opened and extended outwardly so as to increase the volume of the retractable car 2 .

[0071] The utility model adopts a retractable car with controllable depth. In normal use (such as daily travel of residents, where the depth of the car is not required), the retractable side wall components of the retractable car do not extend outward, that is, the depth of the retractable car is small at this time; in special use (such as medical emergency requiring a stretcher to be laid flat to transport patients, home decoration and moving involving the transportation of large furniture, etc., where the depth of the car is required to be large), the retractable side wall components of the retractable car extend outward to expand the depth length to meet special use conditions. The retractable car of the utility model can meet a variety of use scenarios and improve the residents' use experience without increasing the volume occupied by the elevator mechanism outside the existing residence.

[0072] The retractable car 2 includes a first state and a second state, and the retractable car 2 is configured such that at least its depth can be changed with switching between the first state and the second state.

[0073] The depth refers to the distance from the elevator door of the retractable car 2 to the side wall opposite to it, so at least the side wall of the retractable car opposite to the elevator door is composed of a retractable side wall assembly 21, that is, the retractable car 2 includes at least one retractable side wall assembly 21, wherein at least one retractable side wall assembly 21 constitutes the side wall of the retractable car opposite to the elevator door, so that the retractable side wall assembly 21 can be opened and extended outward to increase the depth of the retractable car.

[0074] When the telescopic car 2 includes a plurality of retractable side wall components 21 , the retractable side wall components 21 can be extended outward at the same time, or part of the retractable side wall components 21 can be extended outward.

[0075] In order to ensure the operational stability of the elevator mechanism, the retractable car 2 is only provided with a retractable side wall assembly 21 for adjusting the depth, that is, the retractable car 2 is provided with a retractable side wall assembly 21, and the retractable side wall assembly 21 is configured to form a side wall of the retractable car opposite to the elevator door. This arrangement ensures that the elevator mechanism meets various usage scenarios while ensuring the operational stability of the elevator mechanism, and at the same time improves the safety and user experience of the elevator mechanism.

[0076] Specifically, the retractable side wall assembly 21 includes a tightened state and an extended state. When the retractable car 2 is in the first state, the retractable side wall assembly 21 is in the tightened state; when the retractable car 2 is in the second state, the retractable side wall assembly 21 is in the extended state. The depth of the retractable car 2 in the first state is less than that in the second state.

[0077] The retractable car 2 further includes a frame body 22, and part of the retractable side wall assembly 21 is rotatably connected to one side of the frame body 22. The other side of the frame body 22 is provided with an elevator door and a fixed side wall, the elevator door is arranged opposite to the retractable side wall assembly 21, and the remaining side is provided with a fixed side wall, and the bottom end and the top end of the frame body 22 are respectively fixed with a bottom plate and a top plate.

[0078] In this embodiment, the frame body 22 is in the shape of a cuboid, and an elevator door is provided on the front side (the side close to the existing residence) of the frame body 22. A retractable side wall assembly 21 is provided on the rear side (the side away from the existing residence) of the frame body 22, that is, when the retractable side wall assembly 21 is in a tightened state, the retractable side wall assembly 21 constitutes the rear side wall of the retractable car 2. Fixed side walls are provided on the left and right sides of the frame body 22, a top plate is provided on the top of the frame body 22, and a bottom plate is provided on the bottom of the frame body.

[0079] When the retractable side wall assembly 21 is in the tightened state, the retractable side wall assembly 21 is configured to at least be able to close the side connected to the frame body 22 tightly, that is, the retractable side wall assembly 21 can close the rear side of the frame body 22. When the retractable side wall assembly 21 is in the extended state, the retractable side wall assembly 21 extends outward to form the extension part of the telescopic car, and at least a part of the retractable side wall assembly 21 forms the bottom plate of the extension part, and at least a part of the retractable side wall assembly 21 forms the side wall of the extension part (the side wall is opposite to the elevator door, that is, the rear side wall of the extension part).

[0080] The extended portion refers to the portion formed after the retractable side wall assembly 21 extends outward, and the space formed by the extended portion is connected to the space formed by the retractable car 2 in the first state, that is, the space formed by the retractable car 2 in the first state plus the space formed by the extended portion constitutes the space of the retractable car 2 in the second state, that is, when the retractable car 2 switches from the first state to the second state, its depth increases and its volume increases.

[0081] The elevator door, fixed side wall, bottom plate, top plate, and retractable side wall assembly of the retractable car cooperate with the frame body 22 to close the corresponding wall surface of the frame body, so that the retractable car 2 can form a completely enclosed space in the first state.

[0082] According to one embodiment of the utility model, the retractable side wall assembly 21 includes a first exhibition stand 211 and a second exhibition stand 212 arranged up and down, the bottom end of the second exhibition stand 212 is rotatably connected to the bottom of the frame body 22, the top end of the second exhibition stand 212 is rotatably connected to the bottom end of the first exhibition stand 211, and the top end of the first exhibition stand 211 is a free end, that is, the distance between the top end of the first exhibition stand 211 and the frame body 22 changes with the position of the first exhibition stand 211.

[0083] In order to ensure the structural stability of the extension part, the side end of the first exhibition stand 211 is rotationally connected to the frame body 22 through a rotating link 23, that is, one end of the rotating link 23 is rotationally connected to the inner wall of the side end of the first exhibition stand 211, and one end of the rotating link 23 is rotationally connected to the outer edge of the frame body 22 (the side edge away from the existing residence, also the rear side edge). The first exhibition stand 211 includes two side ends, that is, the two side ends of the first exhibition stand 211 are rotationally connected to the outer edge of the frame body 22 through the rotating link 23, that is, the side ends of the first exhibition stand 211, the rotating link 23, the outer edge of the frame body 22, and the side ends of the second exhibition stand 212 surround the left and right sides of the extension part.

[0084] When the retractable side wall assembly 21 is in a tightened state, the first exhibition stand 211 and the second exhibition stand 212 are located in the same plane relative to each other, and together constitute the side wall of the retractable car 2 in the first state; when the retractable side wall assembly 21 is in an extended state, the first exhibition stand 211 and the second exhibition stand 212 are perpendicular to each other, the second exhibition stand 212 constitutes the bottom plate of the retractable car in the second state (i.e., the bottom plate of the extended part), the first exhibition stand 211 constitutes the side wall of the retractable car in the second state (i.e., the rear side wall of the extended part), and the rotating connecting rod 23 is located between the first exhibition stand 211 and the frame body 22.

[0085] It should be noted that when the second exhibition stand 212 is used as the bottom plate of the extension part, it is flush with the original bottom plate of the telescopic car.

[0086] In order to ensure that the retractable side wall assembly 21 can be closed and fitted with the frame body 22 in the tightened state, the outer edge of the frame body 22 is provided with a fitting groove for accommodating the rotating link 23. When the telescopic car 2 is in the first state, the rotating link 23 is located in the fitting groove; when the telescopic car 2 switches from the first state to the second state, the rotating link 23 rotates out of the fitting groove to support the formation of the extension part. The fitting groove cooperates with the rotating link 23 so that the rotating link 23 is completely embedded in the fitting groove, without affecting the tight fit between the retractable side wall assembly 21 and the frame body in the tightened state.

[0087] In order to ensure the structural stability of the extended part, when the retractable side wall assembly 21 is in the extended state, the first exhibition stand 211 and the second exhibition stand 212 are arranged vertically, the second exhibition stand 212 is perpendicular to the rear side of the frame body 22, the first exhibition stand 211 and the rear side of the frame body 22 are parallel, and the rotating connecting rod 23 is respectively perpendicular to the rear side of the first exhibition stand 211 and the frame body 22. The length of the rotating connecting rod 23 is equal to the length of the second exhibition stand 212 (the distance from its top to the bottom), and the distance between the side edge connection of the rotating connecting rod 23 and the frame body 22 and the top of the frame body 22 is equal to the length of the rotating connecting rod 23.

[0088] In this embodiment, the first exhibition stand 211 and the second exhibition stand 212 are rectangular plates with equal length and width, that is, the first exhibition stand 211 and the second exhibition stand 212 are equal in length and width.

[0089] Exemplarily, two ends of the second exhibition stand 212 are rotatably connected to the first exhibition stand 211 and the outer bottom edges of the frame body 22 by means of hinges, rotating shaft connections or hinge connections.

[0090] In order to further improve the stability of the extension part, a rotation limiter is provided at the rotation connection between the second exhibition stand 212 and the frame body 22, and the rotation limiter is configured to limit the rotation angle α of the second exhibition stand 212 within the range of [0°, 90°]. When the retractable side wall assembly 21 is in the tightened state, α=0° (i.e., the second exhibition stand is located on the outer side of the frame body), and when the retractable side wall assembly 21 is in the extended state, α=90° (i.e., the second exhibition stand is perpendicular to the rear side of the frame body). When switching from the tightened state to the extended state, α gradually increases from 0° to 90°, and when switching from the extended state to the tightened state, α gradually decreases from 90° to 0°. This arrangement can prevent the extension part from tilting downward due to the rotation transition of the second exhibition stand 212.

[0091] In order to improve the structural stability and safety of the extended part, a cable assembly is provided on the left and right sides of the extended part respectively, that is, the retractable car 2 also includes a cable assembly 24, and the cable assembly 24 is configured to at least constitute a part of the left side wall or the right side wall of the extended part.

[0092] According to a preferred embodiment of the utility model, the cable assembly 24 includes a folded state and a stretched state. In the folded state, the cable assembly 24 is configured to be folded and embedded in the first display stand 211 and the rotating connecting rod 23, or the cable assembly 24 is configured to be folded and embedded in the second display stand 212 and the frame body 22, so that the first display stand 211 and the second display stand 212 can be fitted with the frame body 22, and the foldable side wall assembly 2 is in a tightened state; in the stretched state, the cable assembly 24 is configured to be stretched between the first display stand 211 and the rotating connecting rod 23, or the cable assembly 24 is configured to be stretched between the second display stand 212 and the frame body 22, so as to strengthen the connection strength of the extended part, and the foldable side wall assembly 2 is in an extended state.

[0093] Preferably, the switching between the retracted state and the extended state of the cable assembly 24 is performed synchronously with the switching between the retracted state and the extended state of the retractable side wall assembly 2 .

[0094] Exemplarily, the cable assembly 24 includes a folding rod portion 241 and a rope portion 242, wherein the folding rod portion 241 includes a first rod and a second rod, wherein one end of the first rod is rotatably connected to the bottom of the side end of the first booth (or the top of the side end of the second booth), the other end of the first rod is rotatably connected to one end of the second rod, and the other end of the second rod is rotatably connected to the bottom end of the rotating link 23 (or the position where the outer edge of the frame body 22 is located directly below and in contact with the rotating link 23). When in the folded state, the first rod is embedded in the side end of the first booth (or the second booth), and the second rod is embedded in the rotating link (or in the outer edge of the frame body 22, and the embedding position is located below the assembly groove). When in the opened state, the first rod and the second rod are colinear to form the diagonal line of the left wall or the right wall of the extension part.

[0095] The pull rope part 242 includes a plurality of pull ropes arranged in parallel, one end of the pull rope is connected to the side end of the first exhibition stand (or the second exhibition stand), and the other end of the pull rope is connected to the rotating rod (or the outer edge of the frame body 22), and the lengths of the plurality of pull ropes are different, and the closer to the folding rod part 241, the greater the length of the pull rope. When in the retracted state, a part of the pull rope part 242 is limited by the first rod and embedded in the side end of the first exhibition stand (or the second exhibition stand), and the other part of the pull rope part 242 is limited by the second rod and embedded in the rotating connecting rod (or the outer edge of the frame body 22, and the embedded part is located below the assembly groove). When in the unzipped state, the pull rope of the pull rope part 242 is parallel and tightened in the triangular frame formed by the side end of the first exhibition stand, the rotating connecting rod 23, and the folding rod part 24 (or the triangular frame formed by the side end of the second exhibition stand, the outer edge of the frame body 22, and the folding rod part 24), and the pull rope is parallel to the diagonal formed by the folding rod part 24.

[0096] Preferably, the pull rope of the pull rope portion 242 is made of a flexible and elastic material.

[0097] In this embodiment, two sets of oppositely arranged cable assemblies 24 are respectively provided on the left and right sides of the extension part. When the two sets of cable assemblies 24 are in the pulled-apart state, they can fill the rectangular frame formed by the first booth side end, the rotating connecting rod 23, the second booth side end, and the outer edges of the frame body 22, and the folded pull rod parts of the two sets of cable assemblies 24 are close to each other, and the pull ropes of the two sets of cable assemblies 24 are parallel. Figure 4 and Figure 7 As shown. Specifically, a set of cable assemblies: one end of the first pull rod is rotatably connected to the bottom of the side end of the first exhibition stand, the other end of the first pull rod is rotatably connected to one end of the second pull rod, and the other end of the second pull rod is rotatably connected to the bottom end of the rotating connecting rod; one end of the pull rope is connected to the side end of the first exhibition stand, and the other end of the pull rope is connected to the rotating pull rod; when in the retracted state, the first pull rod is embedded in the side end of the first exhibition stand, the second pull rod is embedded in the rotating connecting rod, a part of the pull rope part is limited by the first pull rod and embedded in the side end of the first exhibition stand, and the other part of the pull rope part is limited by the second pull rod and embedded in the rotating connecting rod; when in the unzipped state, the first pull rod and the second pull rod are colinear to form the diagonal line of the left side wall or the right side wall of the extension part, and the pull rope of the pull rope part is parallel and tightened in the triangular frame formed by the side end of the first exhibition stand, the rotating connecting rod, and the folding pull rod part, and the pull rope is parallel to the diagonal line formed by the folding pull rod part. Another group of cable assemblies: one end of the first pull rod is rotatably connected to the top of the side end of the second booth, the other end of the first pull rod is rotatably connected to one end of the second pull rod, and the other end of the second pull rod is rotatably connected to the outer edge of the frame body at a position just below the rotating connecting rod and in contact with each other; one end of the pull rope is connected to the side end of the second booth, and the other end of the pull rope is connected to the outer edge of the frame body; when in the retracted state, the first pull rod is embedded in the side end of the second booth, and the second pull rod is embedded in the outer edge of the frame body, a part of the pull rope part is limited by the first pull rod to be embedded in the side end of the second booth, and the other part of the pull rope part is limited by the second pull rod to be embedded in the outer edge of the frame body, and the embedding position is located below the assembly groove; when in the opened state, the first pull rod and the second pull rod are colinear to form the diagonal line of the left side wall or the right side wall of the extended part, and the pull rope of the pull rope part is stretched and tightened in parallel in the triangular frame formed by the side end of the second booth, the outer edge of the frame body, and the folding pull rod part, and the pull rope is parallel to the diagonal line formed by the folding pull rod part.

[0098] In order to ensure the closedness of the retractable car 2 in the first state and improve the structural compactness of the retractable car 2, the side ends of the first booth, the side ends of the second booth, the rotating connecting rod, and the outer edges of the frame body are provided with grooves matching the cable assembly, so that each part of the cable assembly can be completely embedded in the corresponding grooves when it is in the retracted state.

[0099] In order to improve the user experience and safety performance of the retractable car, the utility model provides a preferred implementation method, such as Figure 2 to Figure 4 As shown, a deformable shielding shed 25 is provided between the frame body 24 and the first exhibition stand 211. The shielding shed 25 includes a folded state and an extended state. In the folded state, the shielding shed 25 is configured to be foldable between the frame body, the rotating connecting rod and the first exhibition stand; in the extended state, the shielding shed 25 is configured such that one end of the shielding shed is connected to the upper part of the frame body 22, and the other end of the shielding shed 25 is connected to the top of the first exhibition stand 211 and the rotating connecting rod 23, so as to seal the top of the extension part of the retractable car 2. The extended state of the shielding shed 25 can only be achieved when the retractable side wall assembly 21 is in the extended state.

[0100] Preferably, the switching between the folded state and the expanded state of the awning 25 is performed synchronously with the switching between the folded state and the extended state of the retractable side wall assembly 21, that is, one end of the awning 25 is sealed and fixedly connected to the upper part of the frame body 22, and the other end of the awning 25 is sealed and fixedly connected to the top of the first exhibition stand 211 and the rotating connecting rod 23.

[0101] In this embodiment, the canopy 25 is in a semi-frame strip shape (the semi-frame shape refers to a rectangular shape with one side missing) when in the folded state, and can be completely embedded in the upper part of the rear side wall of the frame body 22, so that the retractable side wall assembly 21 can be close to the frame body 22 in the first state, thereby ensuring the airtightness and stability of the retractable car. That is, the shape of the canopy 25 in the folded state matches the frame body 22, that is, the frame body 22 is provided with a storage groove capable of storing the canopy, and the canopy 25 can be completely located in the storage groove when in the folded state. It should be noted that the portion of the storage groove located on the outer edge is the assembly groove, and the assembly groove can store the rotating connecting rod and part of the canopy.

[0102] The shelter 25 includes a flexible film layer 251 and a plurality of support bars 252 for supporting the flexible film layer. The support bars 252 are in a semi-frame shape, and the shape of the support bars 252 matches the frame body 22 so that the support bars can be stored in the storage groove. The two ends of the support bars 252 are rotatably connected to the two outer edges of the frame body 22 respectively. The edge of the flexible film layer 251 is sealedly connected to the closed frame formed by the upper part of the frame body 22, the top of the first exhibition stand 211, and the rotating connecting rod 23. The plurality of support bars 252 span the flexible film layer 251 to provide intermediate support force for it, and the support bars 252 are fixedly connected to the flexible film layer so that the flexible film layer can be stretched or folded together as the support bars move. In this embodiment, the shelter 25 includes two support bars 252.

[0103] The material of the flexible film layer 251 is a light material with certain flexibility and elasticity. Preferably, a waterproof layer, an anti-ultraviolet layer and other functional layers are applied on the outside of the flexible film layer 251, so that the shelter has good waterproof, windproof and sunshade effects. The material of the support bar 252 is a light alloy, such as aluminum alloy, to improve the stability of the shelter.

[0104] Preferably, the inner wall of the shielding shed 25 is also provided with a lamp for lighting. Exemplarily, the lamp is an LED lamp to ensure the lighting of the extended part of the retractable car and improve the user experience of the elevator mechanism.

[0105] In order to improve the user experience and safety performance of the retractable car, the utility model also provides another preferred implementation, such as Figures 5 to 8 As shown, a shielding plate 26 is provided on the top of the frame body 22. The shielding plate 26 includes an open state and a closed state. In the closed state, the shielding plate is configured to be embedded or folded on the top of the frame body 22; in the open state, the shielding plate 26 is configured to be extended from the top of the frame body 22, and the shielding plate 26 can completely cover the second exhibition stand 212 when projected downward. It should be noted that the open state of the shielding plate 26 can only be achieved when the retractable side wall assembly 21 is in the extended state, that is, when the retractable side wall assembly 21 is in the tightened state, the shielding plate 26 is in the closed state; when the retractable side wall assembly 21 is in the extended state, the shielding plate 26 can be in the closed state or in the open state, which can be selected by the user according to the actual situation, or the shielding plate 26 can be directly controlled to switch to the open state after the retractable side wall assembly 21 is switched to the extended state, and the shielding plate 26 can be switched to the closed state first when the retractable side wall assembly 21 is switched to the tightened state.

[0106] In this embodiment, the shielding plate 26 includes a flat plate portion 261 and a pulling plate portion 262, one end of the flat plate portion 261 is slidably connected to the top of the frame body 22, and the other end of the flat plate portion 261 is connected to the pulling plate portion 262. The flat plate portion 261 is arranged parallel to the top plate of the retractable car. When in the open state, the flat plate portion 261 extends from the top of the frame body 22 to shield the top of the second exhibition stand 212, that is, the flat plate portion 261 can completely cover the second exhibition stand 212 when projected downward. The pulling plate portion 262 is vertically arranged to the flat plate portion 261, the upper end of the pulling plate portion 262 is connected to the flat plate portion 261, and the lower end of the pulling plate portion 262 extends vertically downward. When in the closed state, the pulling plate portion 262 is located on the outside of the frame body 22. With such an arrangement, on the one hand, it is convenient to pull out the shielding plate 26 through the pulling plate portion 262, and it is convenient to manually switch the state of the shielding plate 26; on the other hand, it can not only guide away the accumulated water above the shielding plate 26 through the pulling plate portion 26, but also improve the sunshade and rainproof effects of the shielding plate 26.

[0107] The flat plate portion 261 is slidably connected to the top of the frame body 22. In the closed state, the flat plate portion 261 can be arranged in parallel just above or just below the top plate of the retractable car 2, or the top plate of the retractable car 2 is provided with a slide groove for accommodating the flat plate portion 261, that is, the flat plate portion 261 is located in the slide groove.

[0108] To ensure the stability of the flat plate portion 261 , in the open state, only a portion of the flat plate portion 261 is extended, and the other portion is still located on the top of the frame body 22 .

[0109] Preferably, the pull plate portion 262 is rotatably connected to the flat plate portion 261 through a flexible sheet 263 to improve the operability of the shielding plate 26. The widths of the pull plate portion 262 and the flexible sheet 263 are respectively equal to the width of the flat plate portion 261. The flexible sheet 263 is made of a material with a certain degree of flexibility.

[0110] Preferably, a lamp 264 is provided on the lower end surface of the flat plate portion 261. Exemplarily, the lamp 264 is an LED lamp to ensure the illumination of the extended portion of the retractable car 2 and improve the user experience of the elevator mechanism.

[0111] The state switching of the retractable side wall assembly 21 and the cable assembly 24 is electrically controlled, and the state switching of the shielding plate 26 (shielding shed 25) can be manually controlled or / and electrically controlled.

[0112] In order to facilitate the intelligent management of the elevator mechanism, the retractable side wall assembly 21, the cable assembly 24, and the shielding plate 26 (shielding shed 25) are all electrically controlled.

[0113] It should be noted that the electrical drive structure in the prior art can realize the state switching of the retractable side wall assembly 21, the cable assembly 24, the shielding plate 26, and the shielding shed 25, which will not be described in detail here.

[0114] The inner wall of the retractable car 2 is provided with a control key for controlling the state switching thereof, so that the user can control the state of the retractable car 2 according to the usage. Preferably, the control key is configured to be able to synchronously control the switching of the state of the retractable side wall assembly, the state of the cable assembly, and the state of the shielding plate (or shielding shed), that is, when the retractable car 2 is switched from the first state to the second state, the retractable side wall assembly is simultaneously switched from the tightened state to the extended state, the cable assembly is simultaneously switched from the retracted state to the extended state, the shielding plate is simultaneously switched from the closed state to the open state (or the shielding shed is simultaneously switched from the folded state to the extended state), and vice versa.

[0115] Embodiment 2

[0116] This embodiment discloses an elevator mechanism that can be used to transform an existing residential elevator. Figures 1 to 9 As shown, including:

[0117] The retractable car 2 disclosed in the first embodiment;

[0118] The elevator shaft 1 cooperates with the telescopic car 2.

[0119] Specifically, the elevator shaft 1 is a rectangular column with at least one side open, and the retractable side wall assembly 21 is arranged on the side wall of the retractable car 2. The open side of the elevator shaft cooperates with the side wall of the retractable car provided with the retractable side wall assembly, so that the retractable car 2 can pass smoothly and unobstructed in the elevator shaft 1 when it is in the second state.

[0120] In this embodiment, the elevator shaft 1 is open only on the outer side, and the remaining three sides are provided with closed elevator shaft walls.

[0121] Since at least one side of the elevator shaft is open and lacks a crossbeam for stabilization, the structural strength of the remaining unopened side wall needs to be strengthened. In addition, there is also the problem of building-level pipeline reconstruction in old residential buildings. The electrical bridges in old residential buildings are usually solved in the stairs, which makes it difficult to renovate the pipelines through the floor slabs and tie them together, and it is also inconvenient to read the meters.

[0122] The present invention can connect the non-gravity pipelines of existing residences (the non-gravity pipelines include electromechanical pipelines, gas pipelines, water and heating pipelines, etc.) directly to the outside of the stairs and combine them with the structure of the elevator shaft. This design concept will play an important role in the establishment of smart communities.

[0123] Specifically, two opposite sides of the elevator shaft 1 that are not open are provided with pipe shafts 101 for installing elevator counterweights (the elevator counterweights include electromechanical circuits, machine boxes, and other structures of the elevator for maintaining the operation of the elevator mechanism) or / and non-gravity pipelines of existing residences. That is, two opposite sides of the elevator shaft that are not open are provided with pipe shafts, one of which is used to install elevator counterweights, and the other is used to install non-gravity pipelines of existing residences. Alternatively, the pipe shafts on both sides are provided with elevator counterweights and non-gravity pipelines of existing residences at the same time.

[0124] The two sides of the elevator shaft that are not open are the elevator counterweight side on one side and the sandwich pipe shaft for assembling existing non-gravity pipelines on the outside of the elevator on the other side. The sandwich pipe shaft also thickens the cross section of the steel structure column, improves the overall stability of the steel structure shaft, and eliminates the shaft beam at the open end of the variable elevator. This innovative solution of systematic integration allows the integration of elevators with retractable cars and the transformation of electromechanical pipelines in old residential buildings.

[0125] Preferably, the inner wall of the pipe shaft 101 (the side close to the retractable car) is provided with a first inspection door, and the side wall of the retractable car 2 is provided with a second inspection door cooperating with the first inspection door to facilitate the inspection of various pipelines in the pipe shaft 101.

[0126] The non-gravity pipelines include electromechanical pipelines, gas pipelines, water and heating pipelines, etc.

[0127] That is, the left and right sides of the elevator shaft 1 are respectively provided with pipe wells 101. Such a configuration can, on the one hand, improve the overall structural rigidity of the elevator shaft 1 and improve the operational stability and safety of the elevator mechanism; on the other hand, it systematically integrates the non-gravity pipelines of existing residences, facilitating the maintenance of the non-gravity pipelines of existing residences, so that pipeline updating, inspection and maintenance, and metering are more convenient and intelligent.

[0128] Preferably, the pipe well 101 is also integrated with water, electricity and gas meters of each household in the existing residence to facilitate counting by counting personnel, reduce disturbance to residents, and improve the efficiency of metering and reading.

[0129] Designing the elevator shaft in this way can enhance the structural strength of the elevator mechanism. The thickened elevator shaft side walls and the additional pipe shaft enhance the strength of the entire structure. This design helps to eliminate the transverse steel beams at the rear side of the elevator shaft, thereby increasing the depth of the car and improving the use scenarios of the elevator mechanism without sacrificing structural stability. This design makes full use of the space of the elevator shaft and integrates the pipelines to the outside of the elevator, which not only improves the maintainability of the pipelines, but also enhances the stability of the structure. It is a practical and innovative design solution for adding elevators to old residential buildings.

[0130] The elevator mechanism includes a master control component for controlling the operation process of the entire elevator mechanism. The master control component is electrically connected to the control key, and can send a control instruction to the master control component through the control key to realize the state control of the retractable car.

[0131] In order to improve the safety of the operation of the elevator mechanism, the elevator mechanism includes a warning component, which is configured to detect whether there is a foreign object on the ground corresponding to the extension part when the retractable car is in the second state, and send a real-time detected signal to the main control component. The foreign object includes humans, pets, objects protruding from the ground with a certain volume, etc. When the warning component detects a foreign object, the main control component issues an alarm (the alarm includes a sound type alarm and / or a light type alarm). If the foreign object is continuously detected within a preset time period or the distance between the retractable car and the ground is less than the preset distance, the retractable car is stopped while the alarm is issued to ensure the safe operation of the elevator mechanism.

[0132] The elevator door of the telescopic car is provided with a door lock assembly, and the door lock assembly is configured to ensure that the elevator door remains in a closed state during the operation of the telescopic car to prevent passengers from falling.

[0133] In addition to buffers being arranged at the bottom and top of the elevator shaft, a buffer layer is arranged on the outer side of the second booth to absorb the impact force generated when the car reaches the ground at the end of the stroke, so as to stop slowly and improve safety.

[0134] When the elevator mechanism is used for elevator renovation of an existing residential building, the elevator mechanism is located outside the existing residential building 3. The outer wall of the existing residential building 3 is provided with a docking platform 31. The docking platform 31 cooperates with the floor of the existing residential building to connect the elevator mechanism and the existing residential building to achieve entry into the house on the same floor.

[0135] Preferably, the docking platform 31 is located on the side of the existing residence 3 that is not in the sun (such as the north side), and the rooms on the first floor or above in the residence that are not in the sun are renovated to be connected to the docking platform 31, so that the residents can travel without obstacles. This arrangement can increase the use area of ​​the residence without affecting the lighting, and improve the residents' enthusiasm for elevator renovation.

[0136] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by any technician familiar with the technical field within the technical scope disclosed in the present invention should be included in the protection scope of the present invention.

Claims

1. A retractable car, characterized in that: At least it can be used for elevator renovation of existing residential buildings, the retractable car comprises a frame body and at least one retractable side wall assembly, the retractable side wall assembly is located on the side of the frame body to form a side wall of the retractable car, wherein at least one retractable side wall assembly is configured to form a side wall of the retractable car opposite to the elevator door; The retractable side wall assembly is configured to at least be able to be opened and extended outwardly so as to increase the volume of the retractable car.

2. The retractable car according to claim 1, characterized in that: The retractable car includes a first state and a second state, and the retractable car is configured so that at least its depth can be changed with switching between the first state and the second state; The retractable side wall assembly includes a tightened state and an extended state. When the retractable car is in the first state, the retractable side wall assembly is in the tightened state; when the retractable car is in the second state, the retractable side wall assembly is in the extended state. The telescopic car has a depth when it is in the first state that is smaller than the depth when it is in the second state.

3. The retractable car according to claim 2, characterized in that: The part of the retractable side wall assembly is rotatably connected to one side of the frame body; When the retractable side wall assembly is in a tightened state, the retractable side wall assembly is configured to at least close the side connected to the frame body; When the retractable side wall assembly is in the extended state, the retractable side wall assembly extends outward to form an extension portion of the retractable car, and at least a portion of the retractable side wall assembly forms a bottom plate of the extension portion, and at least a portion of the retractable side wall assembly forms a side wall of the extension portion.

4. The retractable car according to claim 3, characterized in that: The retractable side wall assembly includes a first exhibition stand and a second exhibition stand arranged up and down; The bottom end of the second booth is rotatably connected to the bottom of the frame body, the top end of the second booth is rotatably connected to the bottom end of the first booth, and the top end of the first booth is a free end; The side end of the first exhibition stand is rotatably connected to the frame body via a rotating connecting rod; When the retractable side wall assembly is in the tightened state, the first exhibition platform and the second exhibition platform are relatively located in the same plane up and down, and together constitute the side wall of the retractable car in the first state; When the retractable side wall assembly is in the extended state, the first stand is perpendicular to the second stand, the second stand constitutes the bottom plate of the retractable car in the second state, the first stand constitutes the side wall of the retractable car in the second state, and the rotating connecting rod is located between the first stand and the frame body.

5. The retractable car according to claim 4, characterized in that: An outer edge of the frame body is provided with an assembly groove for accommodating the rotating connecting rod.

6. The retractable car according to claim 5, characterized in that: The telescopic car further includes a cable assembly configured to at least constitute a portion of a left side wall or a right side wall of the extension portion; The cable assembly includes a stowed state and an extended state; In the retracted state, the cable assembly is configured to be folded and embedded in the first exhibition stand and the rotating connecting rod, or the cable assembly is configured to be folded and embedded in the second exhibition stand and the frame body, so that the first exhibition stand and the second exhibition stand can be attached to the frame body, and the retractable side wall assembly is in a tightened state; In the pulled-open state, the cable assembly is configured to be able to be stretched between the first stand and the rotating connecting rod, or the cable assembly is configured to be able to be stretched between the second stand and the frame body to strengthen the connection strength of the extended part, and the retractable side wall assembly is in the extended state.

7. The retractable car according to claim 6, characterized in that: The switching between the stowed state and the extended state of the cable assembly is performed synchronously with the switching between the stowed state and the extended state of the stowable and extendable side wall assembly.

8. The retractable car according to claim 6, characterized in that: The cable assembly comprises a folding pull rod portion and a pull rope portion; The folding pull rod portion includes a first pull rod and a second pull rod, and the pull rope portion includes a plurality of pull ropes arranged in parallel, the lengths of the plurality of pull ropes are different, and the closer the pull rope is to the folding pull rod portion, the longer the pull rope is; One end of the first pull rod is rotatably connected to the bottom of the side end of the first booth, the other end of the first pull rod is rotatably connected to one end of the second pull rod, and the other end of the second pull rod is rotatably connected to the bottom end of the rotating connecting rod; one end of the pull rope is connected to the side end of the first booth, and the other end of the pull rope is connected to the rotating pull rod; when the first pull rod is in the retracted state, the first pull rod is embedded in the side end of the first booth, and the second pull rod is embedded in the rotating connecting rod, a part of the pull rope part is limited by the first pull rod and embedded in the side end of the first booth, and the other part of the pull rope part is limited by the second pull rod and embedded in the rotating connecting rod; when the pull rod is in the opened state, the first pull rod and the second pull rod are colinear to form the diagonal line of the left side wall or the right side wall of the extended part, and the pull rope of the pull rope part is stretched and tightened in parallel in the triangular frame formed by the side end of the first booth, the rotating connecting rod and the folding pull rod part, and the pull rope is parallel to the diagonal line formed by the folding pull rod part; Alternatively, one end of the first pull rod is rotatably connected to the top of the side end of the second exhibition stand, the other end of the first pull rod is rotatably connected to one end of the second pull rod, and the other end of the second pull rod is rotatably connected to the outer edge of the frame body at a position just below and in contact with the rotating connecting rod; one end of the pull rope is connected to the side end of the second exhibition stand, and the other end of the pull rope is connected to the outer edge of the frame body; when in the retracted state, the first pull rod is embedded in the side end of the second exhibition stand, and the second pull rod is embedded in the outer edge of the frame body, a part of the pull rope part is limited by the first pull rod and embedded in the side end of the second exhibition stand, and the other part of the pull rope part is limited by the second pull rod and embedded in the outer edge of the frame body, and the embedding position is located below the assembly groove; when in the opened state, the first pull rod and the second pull rod are colinear to form a diagonal line of the left side wall or the right side wall of the extended part, and the pull rope of the pull rope part is stretched and tightened in parallel in the triangular frame formed by the side end of the second exhibition stand, the outer edge of the frame body, and the folding pull rod part, and the pull rope is parallel to the diagonal line formed by the folding pull rod part.

9. The retractable car according to claim 6, characterized in that: Two groups of oppositely arranged cable assemblies are respectively arranged on the left and right sides of the extension part.

10. The retractable car according to claim 4, characterized in that A shielding plate is provided on the top of the frame body; The shielding plate includes an open state and a closed state; In the closed state, the shielding plate is configured to be embedded in or folded on the top of the frame body; In the open state, the shielding plate is configured to be able to extend from the top of the frame body, and the shielding plate can completely cover the second exhibition stand when projected downward; The open state of the shielding plate can be achieved only when the retractable side wall assembly is in the extended state.

11. The retractable car according to claim 10, characterized in that The shielding plate includes a flat plate portion and a pull plate portion, one end of the flat plate portion is slidably connected to the top of the frame body, the other end of the flat plate portion is connected to the pull plate portion, and the flat plate portion is arranged parallel to the top plate of the retractable car.

12. The retractable car according to claim 4, characterized in that A deformable shielding shed is provided between the frame body and the first exhibition stand; The shelter canopy includes a folded state and an extended state; In the folded state, the shelter is configured to be foldable between the frame body, the rotating connecting rod and the first exhibition stand; In the expanded state, the shelter is configured such that one end of the shelter is connected to the upper part of the frame body, and the other end of the shelter is connected to the top of the first stand and the rotating connecting rod, so as to make the extension and part of the top of the retractable car airtight; The expanded state of the shelter can be achieved only when the retractable side wall assembly is in the expanded state.

13. The retractable car according to claim 12, characterized in that: The switching between the folded state and the expanded state of the shelter is performed synchronously with the switching between the retracted state and the extended state of the retractable side wall assembly.

14. The retractable car according to claim 12, characterized in that: The shelter includes a flexible film layer and a plurality of support bars for supporting the flexible film layer, wherein the support bars are semi-frame-shaped and the shape of the support bars matches that of the frame body; the two ends of the support bars are rotatably connected to the two outer edges of the frame body respectively, the edge of the flexible film layer is connected to a closed frame formed by the upper part of the frame body, the top of the first booth, and a rotating connecting rod, and the plurality of support bars span the flexible film layer and are fixedly connected to the flexible film layer.

15. An elevator mechanism for renovating an existing residential building, characterized in that: include: A retractable car as claimed in any one of claims 1 to 14; An elevator shaft cooperates with the retractable car.

16. The elevator mechanism according to claim 15, characterized in that The elevator shaft is a rectangular column with at least one side open; The retractable side wall assembly is arranged on the side wall of the retractable car, and the open side of the elevator shaft cooperates with the side wall of the retractable car provided with the retractable side wall assembly, so that the retractable car can pass through the elevator shaft without obstacles.

17. The elevator mechanism according to claim 16, characterized in that The two opposite sides of the elevator shaft that are not open are provided with pipe shafts for installing elevator counterweights and / or existing residential non-gravity pipelines; The cavity wall of the tube well is provided with a first detection door; The side wall of the telescopic car is provided with a second detection door matched with the first detection door.

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