Expansion folding balcony of motor home

Abstract

The utility model provides an expanding and folding balcony of a motor home, and relates to the field of balconies. The fixing frame comprises a first transverse support, a second transverse support and two vertical supports, the first transverse support and the second transverse support are arranged in parallel in an up-down opposite mode, and the two vertical supports are oppositely arranged at the two ends of the first transverse support and the two ends of the second transverse support. The two vertical brackets are respectively provided with a jacking mechanism; one side of the first balcony frame is hinged to the second transverse support, and one side of the second balcony frame is hinged to the other side of the first balcony frame. The two opposite sides of the first balcony frame are connected with the jacking mechanism through first pull ropes. The two opposite sides of the second balcony frame are detachably connected with first connecting pieces on the lower portions of the vertical supports through supporting pipes, second pull ropes are arranged in the supporting pipes in a penetrating mode, and the second pull ropes can be detachably connected with second connecting pieces arranged on the vertical supports. The foldable balcony can be folded and unfolded quickly, the usable area of the balcony can be expanded repeatedly according to needs, and the foldable balcony is easy to operate, safe, reliable, convenient and practical.

Description

TECHNICAL FIELD

[0001] The utility model relates to a balcony field, and particularly to a house car expansion folding balcony. BACKGROUND

[0002] As a kind of building structure of building, balcony can extend house space and make indoor goods be placed outside house, but, for permanent building, balcony is usually fixed, and not flexible enough, for sunlight room, house car, medical shelter and other mobile house, balcony can be used as expansion warehouse, improve use area, and it requires that balcony has the advantages such as folding conveniently, safe and reliable, light, convenient to transport.

[0003] However, the balcony installation structure of existing mobile house is complex. Especially with the house car entering people's life, it is increasingly favored by people, and existing house car has relatively complete function, but due to space limitation, no balcony function is set. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a house car expansion folding balcony, which can quickly realize folding and unfolding of balcony, can expand use area of balcony multiple times according to needs, and is simple to operate, safe and reliable, convenient and practical.

[0005] The embodiment of the utility model is realized as follows:

[0006] The embodiment of the utility model provides a house car expansion folding balcony, which comprises a fixed frame, a first balcony frame and a second balcony frame,

[0007] The fixed frame comprises a first horizontal support, a second horizontal support and two vertical supports, the first horizontal support and the second horizontal support are arranged in parallel on the upper and lower sides, and the two vertical supports are arranged at the two ends of the first horizontal support and the second horizontal support; the two vertical supports are respectively provided with a jacking mechanism;

[0008] One side of the first balcony frame is hinged to the second horizontal support, one side of the second balcony frame is hinged to the other side of the first balcony frame, the opposite sides of the first balcony frame are connected to the jacking mechanism through a first pull rope, the opposite sides of the second balcony frame are detachably connected to the first connecting piece at the lower part of the vertical support through a supporting pipe, a second pull rope is arranged in the supporting pipe, and the second pull rope is detachably connected to the second connecting piece arranged on the vertical support.

[0009] Further, based on the foregoing scheme, the vertical support is provided with a lifting cavity along its length direction, the lifting cavity is mutually penetrated on the opposite sides of the first balcony frame, and the jacking mechanism is arranged in the lifting cavity.

[0010] The electric push rod is arranged at the lower part of the lifting cavity, and the telescopic end thereof is upward.

[0011] The first and second roller bearings are arranged in the lifting cavity in a spaced manner and located on the side of the lifting cavity close to the first balcony frame, so that the electric push rod does not interfere with the first and second roller bearings.

[0012] The support shaft is arranged on the side of the lifting cavity away from the first balcony frame, and the support shaft is located in the spacing range of the first and second roller bearings.

[0013] The vertical support is provided with a traction mechanism at the lower part of the side away from the first balcony frame, the traction mechanism releases the first pull rope, the first pull rope passes through above the support shaft, between the first and second roller bearings in sequence, and is connected with the first balcony frame.

[0014] Further, based on the foregoing scheme, the first and second balcony frames are provided with U-shaped grooves on the top surfaces of the opposite sides along the unfolding direction thereof, the width of the U-shaped groove is less than the width of the lifting cavity; wherein the opposite sides of the two vertical supports are recessed by a certain distance away from the first balcony frame.

[0015] The first pull rope is connected to the U-shaped groove on the side of the first balcony frame close to the second balcony frame and is arranged close to the inner side of the first balcony frame.

[0016] The support tube is connected to the U-shaped groove on the side of the second balcony frame away from the first balcony frame and is arranged close to the outer side of the second balcony frame, so that the support tube can be hidden in the U-shaped groove when the first and second balcony frames are stored.

[0017] Further, based on the foregoing scheme, the first balcony frame is provided with a load-bearing rod inside the side close to the second balcony frame, the load-bearing rod extends to the U-shaped groove at both ends and is used to connect with the first pull rope.

[0018] Further, based on the preceding scheme, the first balcony frame is connected with the second transverse support through a hinge, and a first rubber strip is arranged at the connection between the first balcony frame and the second transverse support; the second balcony frame is connected with the first balcony frame through a hinge, and a second rubber strip is arranged at the connection between the second balcony frame and the first balcony frame.

[0019] Further, based on the preceding scheme, the vertical support is provided with at least one elastic member at a side edge thereof facing the first balcony frame.

[0020] Further, based on the preceding scheme, the vertical support is provided with a first sealing rubber strip at opposite two side outer walls thereof, the first sealing rubber strip protruding from the vertical support towards a side of the first balcony frame; wherein opposite sides of the two vertical supports are recessed by a certain distance away from the side of the first balcony frame.

[0021] Further, based on the preceding scheme, the first transverse support is provided with a second sealing rubber strip at a bottom thereof; the first transverse support is provided with a water baffle at a side thereof facing the first balcony frame, and the water baffle is provided with a water-stopping rubber strip therein; when the first balcony frame and the second balcony frame are stored, a side of the second balcony frame abuts against the water-stopping rubber strip.

[0022] Further, based on the preceding scheme, the traction mechanism comprises a fixing plate and an adjusting screw, the fixing plate is fixedly connected with the vertical support, one end of the adjusting screw is bolted through the fixing plate, and the other end of the adjusting screw is sleeved with a first pull rope.

[0023] Further, based on the preceding scheme, an inner side of the second balcony frame hinged with the first balcony frame is provided with a safety lock for locking with the vertical support; two sides of the first balcony frame are provided with first protective strips, one end of each of the first protective strips is detachably connected with the first balcony frame, and the other end of each of the first protective strips is detachably connected with the vertical support; two sides of the second balcony frame are provided with second protective strips, one end of each of the second protective strips is detachably connected with the second balcony frame, and the other end of each of the second protective strips is detachably connected with the support pipe.

[0024] Compared with the prior art, the embodiments of the utility model have at least the following advantages or beneficial effects:

[0025] The application sets a jacking mechanism in the vertical support, connects the jacking mechanism with the first balcony frame through the first pull rope, pulls or releases the first pull rope through the lifting of the jacking mechanism, and realizes the folding and unfolding of the first balcony frame; the support pipe is connected with the second balcony frame, the support pipe is detachably connected with the lower part of the vertical support through the first connecting piece, the second pull rope is arranged in the support pipe, the second pull rope is detachably connected with the upper part of the vertical support through the second connecting piece, so that the second balcony frame can be independently folded and unfolded, that is, when the support pipe is connected with the lower part of the vertical support, the second balcony frame is perpendicular to the first balcony frame and is used as a protective fence, when the second pull rope is pulled out from the inside of the support pipe and connected with the upper part of the vertical support, the second balcony frame is unfolded and horizontal to the first balcony frame, and is used as an extended balcony of the first balcony frame to increase the balcony area. The application can quickly realize the folding and unfolding of the balcony, can expand the use area of the balcony multiple times according to needs, and is simple, safe and reliable, convenient and practical. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the following will be briefly introduced the drawings needed to be used in the embodiments, it should be understood, the following drawings only shows some embodiments of the utility model, therefore should not be regarded as the limitation to the scope, for the ordinary skilled person in the art, under the premise of not paying the creative labor, still can obtain other related drawings according to these drawings.

[0027] Figure 1 It is the whole structure schematic diagram of the first state of the utility model embodiment motor home expansion folding balcony;

[0028] Figure 2 It is the whole structure schematic diagram of the second state of the utility model embodiment motor home expansion folding balcony;

[0029] Figure 3 It is the utility model Figure 2 It is the enlarged schematic diagram of structure A in the utility model;

[0030] Figure 4 It is the connection structure schematic diagram of the first balcony frame and the second balcony frame of the utility model embodiment;

[0031] Figure 5 It is the front view of the jacking mechanism of the utility model embodiment;

[0032] Figure 6 It is the rear view of the jacking mechanism of the utility model embodiment;

[0033] Figure 7 It is the structure schematic diagram of the safety lock of the utility model embodiment;

[0034] Figure 8The utility model discloses a structure diagram of first protection strip and second protection strip.

[0035] Icon: 11 - first cross support, 12 - second cross support, 13 - vertical support, 131 - lifting cavity, 14 - first connecting piece, 15 - second connecting piece, 16 - elastic piece, 17 - fixed plate, 18 - adjusting screw rod, 2 - jacking mechanism, 21 - electric push rod, 22 - jacking pulley, 23 - first roller bearing, 24 - second roller bearing, 25 - support shaft, 3 - first balcony frame, 4 - second balcony frame, 41 - safety lock, 5 - first pull rope, 6 - support pipe, 61 - second pull rope, 71 - U-shaped groove, 72 - load bar, 73 - hinge, 81 - first rubber strip, 82 - second rubber strip, 83 - first sealing rubber strip, 84 - second sealing rubber strip, 85 - waterproof rubber strip, 91 - first protection strip, 92 - second protection strip. DETAILED DESCRIPTION

[0036] The utility model discloses a structure diagram of first protection strip and second protection strip.

[0037] Please refer to Figures 1-8 , as the whole structure schematic diagram of folding balcony of house car expansion,

[0038] The utility model provides a folding balcony of house car expansion, including fixed frame, first balcony frame 3 and second balcony frame 4,

[0039] Fixed frame includes first cross support 11, second cross support 12 and two vertical supports 13, and first cross support 11 and second cross support 12 are arranged in parallel with each other upside down, and two vertical supports 13 are oppositely arranged at both ends of first cross support 11 and second cross support 12;Two vertical supports 13 are respectively equipped with jacking mechanism 2;

[0040] One side of first balcony frame 3 is hinged to second cross support 12, and one side of second balcony frame 4 is hinged to the other side of first balcony frame 3;The opposite sides of first balcony frame 3 are connected with jacking mechanism 2 through first pull rope 5;The opposite sides of second balcony frame 4 are detachably connected with the first connecting piece 14 of the lower part of vertical support 13 through support pipe 6, and second pull rope 61 is arranged in support pipe 6, and second pull rope 61 can be detachably connected with the second connecting piece 15 arranged in vertical support 13.

[0041] Below, a folding balcony of house car expansion of the exemplary embodiment will be further described.

[0042] In some embodiments, refer to Figure 1 and Figure 2The fixed frame comprises a first horizontal support 11, a second horizontal support 12 and two vertical supports 13, the first horizontal support 11 and the second horizontal support 12 are arranged in parallel and oppositely, and the two vertical supports 13 are arranged oppositely at two ends of the first horizontal support 11 and the second horizontal support 12, forming a rectangular frame structure.

[0043] As a preferred embodiment, the vertical support 13 is provided with a lifting cavity 131 along the length direction of the vertical support 13, the lifting cavity 131 is in communication with two opposite sides of the first balcony frame 3, so as to facilitate the passing of the first pull rope 5, and the jacking mechanism 2 is arranged in the lifting cavity 131 and can be lifted in the lifting cavity 131, thereby driving the first pull rope 5 to be lifted.

[0044] Referring to Figure 5 The jacking mechanism 2 comprises an electric push rod 21, a jacking pulley 22, a first roller bearing 23, a second roller bearing 24 and a support shaft 25, the electric push rod 21 is arranged at the lower part of the lifting cavity 131 and the telescopic end thereof is upward, and the jacking pulley 22 is arranged at the telescopic end of the electric push rod 21; by controlling the telescopic movement of the electric push rod 21, the jacking pulley 22 is driven to be lifted in the lifting cavity 131.

[0045] The first roller bearing 23 and the second roller bearing 24 are arranged in the lifting cavity 131 in a spaced manner and are located at the side of the lifting cavity 131 close to the first balcony frame 3, so as not to interfere with the electric push rod 21; the support shaft 25 is arranged at the side of the lifting cavity 131 away from the first balcony frame 3, and the support shaft 25 is located in the spacing range of the first roller bearing 23 and the second roller bearing 24. That is, the electric push rod 21 drives the jacking pulley 22 to be lifted in the lifting cavity 131, and the support shaft 25 and the first roller bearing 23 and the second roller bearing 24 are respectively located at the opposite sides of the electric push rod 21, which does not affect the lifting of the electric push rod 21.

[0046] Referring to Figure 6The traction mechanism releases the first pull rope 5, the first pull rope 5 passes through above the support shaft 25, between the first and second roller bearings 23 and 24 in sequence, and is connected with the first balcony frame 3. When the electric push rod 21 pushes the lifting pulley 22 to rise, the lifting pulley 22 contacts the first pull rope 5 and pushes the first pull rope 5 upward, at this time the first pull rope 5 drives the first and second balcony frames 3 and 4 to gradually rotate toward the side of the vertical support 13, until close to the vertical support 13, at this time the first pull rope 5 is tensioned by the support shaft 25 and the first roller bearing 23; when the electric push rod 21 drives the lifting pulley 22 to fall down, the lifting pulley 22 slowly releases the first pull rope 5, the first pull rope 5 slowly releases the first and second balcony frames 3 and 4, and drives them to rotate downward to be unfolded, at this time the lifting pulley 22 is below the second roller bearing 24 and is not stressed, and the first pull rope 5 is tensioned by the support shaft 25 and the second roller bearing 24. Through the above structure, the first and second balcony frames 3 and 4 can be stably folded and unfolded, and when unfolded, the electric push rod 21 and the lifting pulley 22 are not stressed, so that the balcony is not stressed during activity, and the service life can be prolonged.

[0047] In some embodiments, with reference to Figure 1 and Figure 2 The opposite sides of the second balcony frame 4 are detachably connected with the first connecting pieces 14 at the lower part of the vertical support 13 through the support pipes 6, and the second pull rope 61 is arranged in the support pipes 6 and can be detachably connected with the second connecting pieces 15 arranged on the vertical support 13. The second balcony frame 4 is connected with the lower part of the vertical support 13 through the support pipes 6, so that the second balcony frame 4 is perpendicular to the first balcony frame 3 when the first balcony frame 3 is unfolded, at this time the second balcony frame 4 serves as a guardrail of the first balcony frame 3. The second pull rope 61 is arranged in the support pipes 6 and can be connected with the upper part of the vertical support 13 through the connecting pieces after being pulled out, so that the second balcony frame 4 can be unfolded horizontally and serves as an extended balcony of the first balcony frame 3. The first connecting pieces 14 can be U-shaped connecting steel plates which are connected with the inner side of the vertical support 13 through bolts, and threaded rods can be arranged in the connecting steel plates in a threaded manner, the end part of the support pipe 6 is arranged in a hole and rotates on the threaded rod, the threaded rod facilitates the dismounting of the support pipe 6 from the connecting steel plate to adjust the position, and the connecting steel plate can also be dismounted from the vertical support 13 to facilitate the maintenance of the electric push rod 21. The second connecting pieces 15 can be hooks which are movably connected with the vertical support 13 through bolts, and the second pull rope 61 can be directly hooked on the hooks after being pulled out of the support pipes 6, facilitating the dismounting.

[0048] As a more preferred embodiment, with reference to Figure 4The top surface of the first balcony frame 3 and the second balcony frame 4 on the opposite sides along the unfolding direction is provided with a U-shaped groove 71, the width of the U-shaped groove 71 is smaller than the width of the lifting cavity 131; wherein the opposite side of the two vertical supports 13 is recessed by a certain distance away from the first balcony frame 3, so that the first balcony frame 3 and the second balcony frame 4 can be accommodated in the inner side of the fixed frame after being folded and stored, and the outer side of the two vertical supports 13 can cover them externally.

[0049] The end of the first pull rope 5 away from the traction mechanism is connected to the U-shaped groove 71 of the first balcony frame 3 near the second balcony frame 4 and is arranged near the inner side of the first balcony frame 3; the end of the support pipe 6 away from the vertical support 13 is connected to the U-shaped groove 71 of the second balcony frame 4 away from the first balcony frame 3 and is arranged near the outer side of the second balcony frame 4, so that the support pipe 6 can be hidden in the U-shaped groove 71 when the first balcony frame 3 and the second balcony frame 4 are stored. By providing the U-shaped groove 71 and arranging the connection end of the first pull rope 5 and the support pipe 6 near the inner side and the outer side of the U-shaped groove 71 respectively, the connection end of the first pull rope 5 and the support pipe 6 can be stored and hidden in the U-shaped groove 71 at the same time without interfering with each other.

[0050] Specifically, the first balcony frame 3 and the second balcony frame 4 can be spliced by a plurality of steel pipes, and the U-shaped groove 71 is composed of a U-shaped steel plate. In the later stage, support plates, decorative plates and the like can be laid on the steel pipes.

[0051] As a more preferred embodiment, the inner side of the first balcony frame 3 near the second balcony frame 4 is transversely provided with a load-bearing rod 72, the two ends of the load-bearing rod 72 extend into the U-shaped groove 71 and are used for connecting with the first pull rope 5. By providing the load-bearing rod 72 in the first balcony frame 3, the weight of the first balcony frame 3 itself can be balanced, the first pull rope 5 can be tensioned, and the second balcony frame 4 can be supported and loaded. Specifically, the first load-bearing rod 72 can be welded and transversely provided in the steel pipe near the second balcony frame 4, the end portion thereof extends into the U-shaped groove 71, an extension portion for sleeving the first pull rope 5 can be provided, and a limiting baffle is arranged at the end portion to avoid the first pull rope 5 from being pulled out.

[0052] Referring to Figure 1 and Figure 3 and Figure 4In some embodiments, the first balcony frame 3 is connected to the second horizontal support 12 through a hinge 73, and a first rubber strip 81 is arranged at the connection between the first balcony frame 3 and the second horizontal support 12; the second balcony frame 4 is connected to the first balcony frame 3 through a hinge 73, and a second rubber strip 82 is arranged at the connection between the second balcony frame 4 and the first balcony frame 3. By arranging the first rubber strip 81 and the second rubber strip 82, the first balcony frame 3 and the second balcony frame 4 can be ejected when they are unfolded, and the connection can be sealed when they are stored.

[0053] As a preferred embodiment, referring to Figure 1 The vertical support 13 is provided with at least one elastic member 16 on the side edge facing the first balcony frame 3. The elastic member 16 is composed of a shaft body and a spring sleeved on the shaft body, the spring is limited between the end of the shaft body and the vertical support 13, and the shaft body penetrates through the vertical support 13. When the first balcony frame 3 is stored, the spring is compressed and the shaft body is extruded. When the first balcony frame 3 is released, the spring is elongated and elastically pushes the first balcony frame 3 to eject it. The elastic member 16 can also be arranged on the upper part of the vertical support 13 to assist the second balcony frame 4 to eject.

[0054] As a preferred embodiment, the opposite two side walls of the vertical support 13 are provided with a first sealing rubber strip 83, and the first sealing rubber strip 83 protrudes from the vertical support 13 towards the side of the first balcony frame 3. By arranging the first sealing rubber strip 83 on the vertical support 13, the inside of the vertical support 13 can be sealed and protected when the first balcony frame 3 and the second balcony frame 4 are stored, and the end face protruding from the vertical support 13 can improve the sealing effect.

[0055] As a preferred embodiment, referring to Figure 1 The first horizontal support 11 is provided with a second sealing rubber strip 84 at the bottom, a water baffle is arranged on the side of the first horizontal support 11 facing the first balcony frame 3, a water blocking rubber strip 85 is arranged in the water baffle, and the side of the second balcony frame 4 abuts against the water blocking rubber strip 85 when the first balcony frame 3 and the second balcony frame 4 are stored. By arranging the second sealing rubber strip 84 and the water blocking rubber strip 85 on the first horizontal support 11, the top can be sealed and protected after storage, and the waterproof performance is improved. By arranging the water blocking rubber strip 85, the first sealing rubber strip 83, the second sealing rubber strip 84 and the first rubber strip 81, the four sides of the fixed frame can be sealed and protected after storage, so that the folding balcony can be applied to the rear compartment of a motor home or a window, and the sealing property of the motor home can be improved after being closed.

[0056] As a preferred embodiment, referring to Figure 6As a preferred embodiment, the traction mechanism comprises a fixed plate 17 and an adjusting screw 18, the fixed plate 17 is fixedly connected to the vertical support 13, one end of the adjusting screw 18 is bolted through the fixed plate 17, and the other end of the adjusting screw 18 is sleeved with the first pull rope 5. By setting the adjusting screw 18, the tension of the first pull rope 5 can be adjusted. Wherein, the first pull rope 5 can be arranged in parallel with two, and the adjusting screw 18 is correspondingly arranged with two, respectively connected with the two first pull ropes 5.

[0057] With reference to Figure 7 As a preferred embodiment, the inner side of the second balcony frame 4 hinged with the first balcony frame 3 is provided with a safety lock 41, which is used for locking with the vertical support 13. Specifically, the safety lock 41 can adopt a spring bolt with a knob. When the first balcony frame 3 and the second balcony frame 4 are stored, the spring bolt is inserted into the insertion hole opened on one side of the vertical support 13 by rotating the knob, so as to lock the first balcony frame 3 and the second balcony frame 4 with the vertical support 13, which can ensure the safety during driving.

[0058] With reference to Figure 8 As a preferred embodiment, the two sides of the first balcony frame 3 are provided with first protective strips 91, one end of the first protective strip 91 is detachably connected with the first balcony frame 3, and the other end of the first protective strip 91 is detachably connected with the vertical support 13. The two sides of the second balcony frame 4 are provided with second protective strips 92, one end of the second protective strip 92 is detachably connected with the second balcony frame 4, and the other end of the second protective strip 92 is detachably connected with the support pipe 6. The protective strip is formed by two strip bodies hinged with each other, and the end of the protective strip is detachably connected by bolts, which is convenient for disassembly. The first protective strip 91 and the second protective strip 92 are respectively located on both sides of the support pipe 6, and are stored in the U-shaped groove 71 after storage, which is convenient for expansion and storage. By setting the protective strip, the hollow part on both sides of the first balcony frame 3 and the second balcony frame 4 can be protected, so as to avoid falling from the hollow part during the movement of the balcony.

[0059] In addition, unless specifically stated or limited otherwise, in the embodiments of the present application, if the terms "mount", "connect" appear, it should be understood as a broad meaning, for example, "connect" can be detachable connection, can also be non-detachable connection; can be direct connection, can also be indirect connection through intermediate medium. If the terms "upper", "lower", "left", "right", "inner", "outer", "side" and other orientation terms appear, only refer to the direction of the drawing or the orientation of the product when it is used, only for the purpose of clearly describing the present application, and do not indicate or imply that the device or element must have a particular orientation, be constructed and operated in a particular orientation, and cannot be understood as a limitation on the present application. The terms "first", "second" and the like are only used to distinguish the description, and cannot be understood as indicating or implying relative importance; "a plurality of" means at least two. In the embodiments of the present application, the relative positional relationship limitations mentioned, such as parallel, perpendicular, aligned and the like, are relative to the current process level, and are not strictly limited, and a small amount of deviation is allowed, such as approximately parallel, approximately perpendicular, approximately aligned and the like. For example, A is parallel to B, which means that A and B are parallel or approximately parallel, and the included angle between A and B can be between 0 degrees and 10 degrees.

[0060] The above is only some embodiments and implementations of the present application, and the protection scope of the present application is not limited thereto. In the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other, and any combination of features in different embodiments is also within the protection scope of the present application. Any changes or replacements that can be easily thought of by those skilled in the art within the technical scope disclosed in the present application should be covered within the protection scope of the present application.

Claims

1. A recreational vehicle expansion folding balcony, characterized by, The fixed frame comprises a first horizontal support, a second horizontal support and two vertical supports, the first horizontal support and the second horizontal support are arranged in parallel on the upper and lower sides, and the two vertical supports are arranged on the two ends of the first horizontal support and the second horizontal support; the two vertical supports are respectively provided with a jacking mechanism; One side of the first balcony frame is hinged to the second horizontal support, and one side of the second balcony frame is hinged to the other side of the first balcony frame; the opposite sides of the first balcony frame are connected to the jacking mechanism through a first pull rope; the opposite sides of the second balcony frame are detachably connected to the first connectors at the lower part of the vertical supports through a support pipe, and a second pull rope is arranged in the support pipe, which can be detachably connected to the second connectors arranged on the vertical supports. The vertical support is provided with a lifting cavity along the length direction, the lifting cavity is in communication with the opposite sides of the first balcony frame, and the jacking mechanism is arranged in the lifting cavity; the jacking mechanism comprises an electric push rod, a jacking pulley, a first roller bearing, a second roller bearing and a support shaft, 2. The recreational vehicle expansion fold-out balcony of claim 1, wherein, The electric push rod is arranged at the lower part of the lifting cavity and the telescopic end thereof is upward, and the jacking pulley is arranged at the telescopic end of the electric push rod; The first roller bearing and the second roller bearing are arranged in the lifting cavity in a spaced manner on the upper and lower sides and located on the side of the lifting cavity close to the first balcony frame, so that the first roller bearing and the second roller bearing do not interfere with the electric push rod; The support shaft is arranged on the side of the lifting cavity away from the first balcony frame, and the support shaft is located in the spacing range between the first roller bearing and the second roller bearing; The lower part of the side of the vertical support away from the first balcony frame is provided with a traction mechanism, the traction mechanism releases the first pull rope, the first pull rope passes through the space above the support shaft, between the first roller bearing and the second roller bearing in sequence, and is connected with the first balcony frame. The top surfaces of the opposite sides of the first balcony frame and the second balcony frame along the unfolding direction are provided with U-shaped grooves, the width of the U-shaped groove is less than the width of the lifting cavity; wherein the opposite sides of the two vertical supports are recessed by a certain distance away from the first balcony frame; 3. The recreational vehicle expansion fold-out balcony of claim 2, wherein, The end of the first pull rope away from the traction mechanism is connected to the U-shaped groove close to the first balcony frame and arranged close to the inner side of the first balcony frame; The end of the support pipe away from the vertical support is connected to the U-shaped groove away from the first balcony frame and arranged close to the outer side of the second balcony frame, so that the support pipe can be hidden in the U-shaped groove when the first balcony frame and the second balcony frame are stored. The inner side of the first balcony frame close to the second balcony frame is transversely provided with a load-bearing rod, and the two ends of the load-bearing rod extend into the U-shaped groove and are used for connecting the first pull rope.

4. The recreational vehicle expansion fold-out balcony of claim 3 wherein, ​ 5. The recreational vehicle expansion fold-out balcony of claim 1 wherein, The first balcony frame is connected with the second horizontal support through a hinge, and a first rubber strip is arranged at the connection between the first balcony frame and the second horizontal support; the second balcony frame is connected with the first balcony frame through a hinge, and a second rubber strip is arranged at the connection between the second balcony frame and the first balcony frame.

6. The recreational vehicle expansion fold-out balcony of claim 5 wherein, The vertical support is provided with at least one elastic member at a side edge thereof facing the first balcony frame.

7. The recreational vehicle expansion fold-out balcony of claim 1 wherein, The opposite two side walls of the vertical support are provided with first sealing rubber strips, which protrude from the vertical support towards a side of the first balcony frame.

8. The recreational vehicle expansion fold-out balcony of claim 7, wherein, The first horizontal support is provided with a second sealing rubber strip at the bottom thereof; the first horizontal support is provided with a water baffle at a side thereof facing the first balcony frame, and the water baffle is provided with a water-stopping rubber strip; when the first balcony frame and the second balcony frame are stored, a side of the second balcony frame abuts against the water-stopping rubber strip.

9. The recreational vehicle expansion fold-out balcony of claim 2, wherein, The traction mechanism comprises a fixing plate and an adjusting screw, one end of the adjusting screw is bolted through the fixing plate, and the other end of the adjusting screw is sleeved with a first pull rope.

10. The recreational vehicle expansion fold-out balcony of claim 1 wherein, The inner side of the second balcony frame hinged with the first balcony frame is provided with a safety lock for locking with the vertical support; the first balcony frame is provided with first protective strips at two sides thereof, one end of each first protective strip is detachably connected with the first balcony frame, and the other end of each first protective strip is detachably connected with the vertical support; the second balcony frame is provided with second protective strips at two sides thereof, one end of each second protective strip is detachably connected with the second balcony frame, and the other end of each second protective strip is detachably connected with the support pipe.

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