CN220734970U - Exempt from to install collapsible rail - Google Patents

Abstract

The utility model relates to the field of fences, and discloses an installation-free foldable fence, which comprises an upper frame, a lower frame and vertical support rods, wherein the upper frame and the lower frame are symmetrically arranged at the upper and lower positions, and the vertical support rods are arranged between the upper frame and the lower frame. The upper frame is a polygonal frame structure formed by enclosing a plurality of connecting rods. Corner hinges are arranged at the corners of the upper frame. The corner hinge piece is movably hinged with one end of the connecting rod respectively. The connecting rod includes first connection branch, goes up connecting piece and second connection branch. The upper connecting piece is arranged between the first connecting support rod and the second connecting support rod. The lower frames are in one-to-one correspondence with the upper frames. At least one of the upper connecting piece and the lower connecting piece is a braking connecting piece, so that the problem caused by joint looseness can be avoided. When the connecting frame is used, the first connecting support rod and the second connecting support rod are straightened, and the upper frame and the lower frame are unfolded for use. When the fence is stored, the middle part of the connecting rod is folded inwards after the connecting piece is unlocked, so that the fence can be folded into a bundle shape, and the fence is convenient and quick.

Description

Exempt from to install collapsible rail

Technical Field

The utility model relates to the field of fences, in particular to an installation-free foldable fence.

Background

The child fence, also called child safety fence, game fence and safety guard rail, mostly adopts plastic or wooden material structure, and is mainly used for providing a safe and interesting activity space for infants or children from 6 months to 12 years old. Parents can put children in the fence to play themselves when working, cooking or doing other things, glass cups, table corners, stool legs, thermos bottles and the like on the table seem to be open, so that serious injury can be brought to the children, and the children fence can provide a safe personal space for the children.

It is necessary for a toddler just learning to climb or walk to play with a child enclosure to define a specific safe area. The prior child fence is formed by splicing the fence plates, when the child fence is transported, the child fence is usually disassembled into the independent fence plates for transportation, the child fence needs to be spliced by a consumer after purchasing, and when the child fence needs to be stored, the child fence is also required to be disassembled into the independent fence plates by the consumer, and the child fence is inconvenient to splice or store. And because the fence is formed by simply splicing the fence plates, the stability is poor, and the fence plates are easy to collapse or scatter under the condition that children shake forcefully. In the market, some parts are assembled in a folding way, and the joints are loose, so that the problems of incapacitation, retraction, infirm and the like after being unfolded are solved.

Disclosure of Invention

The utility model aims to solve the problems and provide the installation-free foldable fence, which not only can be completely folded without installation, but also is convenient and quick to use and stable and firm in whole.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

the utility model discloses an installation-free foldable fence, which comprises an upper frame, a lower frame and vertical support rods, wherein the upper frame and the lower frame are symmetrically arranged at the upper and lower positions, and the vertical support rods are arranged between the upper frame and the lower frame.

The upper frame is a polygonal frame structure formed by enclosing a plurality of connecting rods; corner hinges are arranged at the corners of the upper frame; the corner hinge piece is movably hinged with one end of the connecting rod respectively; the connecting rod comprises a first connecting support rod, an upper connecting piece and a second connecting support rod; the upper connecting piece is arranged between the first connecting support rod and the second connecting support rod; the first connecting support rod, the lower connecting piece, the second connecting support rod and the corner hinge piece of the lower frame are in one-to-one correspondence with the positions of the upper frame.

One end of the vertical supporting rod is fixedly connected with the corner hinge piece of the upper frame, and the other end of the vertical supporting rod is fixedly connected with the corner hinge piece of the lower frame. At least one of the upper connecting piece and the lower connecting piece is a braking connecting piece.

Further, the brake connector is a bottom unlocking connector, and the bottom unlocking connector comprises a connector body, a first sleeve, a second sleeve, a compression spring and a conical top block.

The left side and the right side of the connecting piece main body are respectively provided with a left avoidance groove, a left riveting hole, a right avoidance groove, a right riveting hole and a middle hole; the left avoidance groove comprises a left arc groove, and a left straight line groove extending from the upper end of the left arc groove to the middle of the connecting piece main body; the right avoidance groove comprises a right arc groove and a right straight line groove extending from the upper end of the right arc groove to the middle of the connecting piece main body.

The first sleeve is arranged on the left avoidance groove through a rivet, and the second sleeve is arranged on the right avoidance groove through a rivet; the conical jacking block is provided with a middle groove, the middle groove is arranged on the middle hole through a rivet, and the upper end of the conical jacking block is positioned between the first sleeve and the second sleeve; when the conical jacking block moves upwards, the rivets of the first sleeve and the second sleeve are pushed to the arc grooves on the two sides, the first sleeve and the second sleeve can rotate relative to the connecting piece main body, and otherwise, the first sleeve and the second sleeve cannot rotate.

The first sleeve is movably sleeved with the first connecting support rod, the second sleeve is movably sleeved with the second connecting support rod, and the first connecting support rod and the second connecting support rod are respectively movably riveted with the left riveting hole and the right riveting hole of the connecting piece main body through rivets; compression springs are arranged between the first sleeve and the first connecting support rod and between the second sleeve and the second connecting support rod.

Further, the first sleeve and the second sleeve are provided in a hemispherical shape toward one end of the middle of the connector body.

Further, the brake connector is a side unlocking connector; the side unlocking type connecting piece comprises a first connecting part, a middle clamping part, a compression spring, a second connecting part and an unlocking button. The first connecting part comprises a third sleeve and a first rotating part which are connected with each other, and the second connecting part comprises a fourth sleeve and a second rotating part which are connected with each other. The first rotating part and the second rotating part are rotatably sleeved; cavities are formed in the first rotating part and the second rotating part, and first convex edges are arranged around the cavities of the first rotating part; the middle part is provided with the axostylus axostyle in the second rotation portion cavity, is provided with the second protruding edge all around. The middle clamping part is arranged in the cavities of the first rotating part and the second rotating part, and clamping grooves which are clamped with the first convex edge and the second convex edge are respectively arranged at two ends of the middle clamping part. The compression spring is arranged on the shaft rod, one end of the compression spring is propped against the cavity of the second rotating part, and the other end of the compression spring is propped against the middle clamping part and is used for extruding the middle clamping part to the first rotating part; when the included angle between the third loop bar and the fourth loop bar is 180 degrees or 0 degrees, the clamping groove of the middle clamping part is clamped with the first convex edge of the first rotating part. The unlocking button passes through the cavity of the first rotating part and is propped against one end of the middle clamping part; the thickness of the middle clamping part is smaller than the depth of the cavity of the second rotating part; through pressing the unlocking button, the middle clamping part can be pushed to move towards the cavity of the second rotating part, so that the clamping groove of the middle clamping part is separated from the first convex edge of the first rotating part, and unlocking is realized. The third sleeve rod is sleeved with the first connecting supporting rod, and the fourth sleeve pipe is sleeved with the second connecting supporting rod.

Further, the upper frame and the lower frame are square structures. When one side of the upper frame is provided with two or more connecting rods, the fence also comprises a middle hinge piece and a middle supporting rod; the middle hinge piece is a T-shaped hinge piece, two hinge openings at the upper end of the middle hinge piece are respectively movably hinged with the connecting rod, and the lower end of the middle hinge piece is fixedly connected with one end of the middle supporting rod; the other end of the middle supporting rod is connected with a middle hinge piece of the lower frame; the middle hinge parts of the upper frame and the lower frame are consistent in structure.

Further, the hinge openings of the corner hinge piece and the middle hinge piece, which are connected with the connecting rod, are arranged in a semicircular shape which is convenient for sleeving.

Further, the corner hinge piece is a Y-shaped hinge piece, two hinge openings at the upper end of the corner hinge piece of the upper frame are respectively connected with one end of the connecting rod, and a hinge interface at the lower end is connected with one end of the vertical supporting rod; the two hinge openings at the lower end of the corner hinge piece of the lower frame are respectively connected with one end of the connecting rod, and the upper end of the corner hinge piece is connected with the other end of the vertical supporting rod.

Further, the connecting rod, the middle supporting rod and the vertical supporting rod are square or round hollow pipes, and round corners are arranged at edges of the square hollow pipes.

Further, anti-collision cotton slivers are arranged on the connecting rods, the middle supporting rods and the vertical supporting rods.

Further, the connecting rods, the middle supporting rods and the vertical supporting rods are made of aluminum alloy materials.

The utility model has the advantages that:

the connecting rods of the upper and lower frames are movably hinged with the middle hinge piece and the corner hinge piece, and the connecting rods are connected by the first connecting support rod and the second connecting support rod through the upper connecting piece or the lower connecting piece, so that the connecting rods can realize the turnover function. At least one of the upper connecting rod and the lower connecting piece is a braking connecting piece, so that the problems of incapacity of supporting, retraction, infirm and the like after the expansion caused by loose joints are avoided. When the connecting frame is used, the first connecting support rod and the second connecting support rod are straightened, and the upper frame and the lower frame are unfolded for use. When the folding type rail is stored, the brake connecting piece is firstly unlocked (the conical top block is upwards moved and the unlocking button is pressed), the rail can be folded into a beam shape only by inwards folding the middle of the connecting rod, the folding type rail is convenient to store and transport, disassembly and assembly are not needed, and the folding type rail is convenient and fast to use.

Drawings

Fig. 1 is a schematic structural view of the first embodiment.

Fig. 2 is a front view of the bottom-unlocking connector.

Fig. 3 is an exploded view of the bottom unlocking connection.

Fig. 4 is a schematic view of the structure of the bottom unlocking connection.

Fig. 5 is a schematic structural view of a side unlocking type connector.

Fig. 6 is an exploded view (one) of the side-unlocking type connector.

Fig. 7 is an exploded view of a side unlocking connector (two).

Fig. 8 is a perspective view of the corner hinge.

Fig. 9 is a schematic structural diagram of the second embodiment.

Fig. 10 is a schematic structural view of the intermediate hinge.

Fig. 11 is a folding process diagram (one) of the first embodiment.

Fig. 12 is a folding process diagram (two) of the first embodiment.

Fig. 13 is a folding process diagram (third) of the first embodiment.

Fig. 14 is a folding process diagram (one) of the second embodiment.

Fig. 15 is a folding process diagram (two) of the second embodiment.

Fig. 16 is a folding process diagram (third) of the second embodiment.

Description of main reference numerals:

1. an upper frame;

2. a lower frame;

3. a vertical support rod;

4. a connecting rod 41, a first connecting strut 42, a second connecting strut;

5. corner hinges;

6. upper connector, 61, connector body, 611, left relief groove, 612, left rivet hole, 613, right relief groove, 614, right rivet hole, 615, middle hole, 616, left arc groove, 617, left straight line groove, 618, right arc groove, 619, right straight line groove, 62, first sleeve, 63, second sleeve, 64, conical top block, 641, middle groove;

7. the lower connecting piece, 71, a first connecting part, 711, a third sleeve, 712, a first rotating part, 713, a first convex edge, 72, a middle clamping part, 721, a clamping groove, 74, a second connecting part, 741, a fourth sleeve, 742, a second rotating part, 743, a shaft lever, 744, a second convex edge, 75 and an unlocking button;

8. a middle hinge;

9. and a middle supporting rod.

Detailed Description

In order to enable those skilled in the art to better understand the technical solutions of the present utility model, the present utility model will be described in further detail with reference to the accompanying drawings and specific embodiments.

Embodiment one:

as shown in fig. 1 to 8, the present utility model discloses an installation-free foldable fence, which comprises an upper frame 1 and a lower frame 2 symmetrically arranged at upper and lower positions, and a vertical support bar 3 arranged between the upper frame 1 and the lower frame 2.

Wherein the upper frame 1 is a square frame structure surrounded by four connecting rods 4. Corner hinges 5 are arranged at the corners of the upper frame 1. The connecting rod 4 comprises a first connecting strut 41, an upper connecting piece 6 and a second connecting strut 42. The upper connector 6 is disposed intermediate the first connecting strut 41 and the second connecting strut 42.

The positions of the parts of the lower frame 2 and the upper frame 1 are arranged in a one-to-one correspondence. Namely: the lower frame 2 is a square frame structure surrounded by four connecting rods 4. Corner hinges 5 are arranged at the corners of the lower frame 2. Both ends of the connecting rod 4 are respectively movably hinged with the corner hinge piece 5. The connecting rod 4 comprises a first connecting strut 41, a lower connecting piece 7 and a second connecting strut 42. The lower connector 7 is arranged intermediate the first connecting strut 41 and the second connecting strut 42.

The corner hinge piece 5 is a Y-shaped hinge piece, two hinge openings at the upper end of the corner hinge piece 5 of the upper frame 1 are respectively connected with one end of the connecting rod 4, and a hinge opening at the lower end is connected with one end of the vertical supporting rod 3. The two hinge openings at the lower end of the corner hinge piece 5 of the lower frame 2 are respectively connected with one end of the connecting rod 4, and the upper end is connected with the other end of the vertical supporting rod 3. Both ends of the connecting rod 4 are respectively movably hinged with the corner hinge piece 5.

Wherein the upper connector 6 is a bottom unlocking connector and the lower connector 7 is a side unlocking connector.

Specifically, the bottom-unlocking connector includes a connector body 61, a first sleeve 62, a second sleeve 63, a compression spring and a tapered top block 64.

Wherein, left avoidance groove 611, left riveting hole 612, right avoidance groove 613, right riveting hole 614 and middle hole 615 are respectively arranged on the left and right sides of the connecting piece main body 61. The left avoiding groove 611 includes a left arc groove 616 and a left straight groove 617 extending from the upper end of the left arc groove 616 toward the middle of the connector body 61; the right escape groove 613 includes a right arc groove 618 and a right straight groove 619 extending toward the middle of the connector body 61 from the upper end of the right arc groove 618.

Wherein, the first sleeve 62 is set on the left avoidance groove 611 by a rivet, and the second sleeve 63 is set on the right avoidance groove 613 by a rivet. The tapered top block 64 is provided with a middle groove 641, the middle groove 641 is provided on the middle hole 615 by a rivet, and the upper end of the tapered top block 64 is located in the middle of the first sleeve 62 and the second sleeve 63.

In use, when the conical top block 64 moves upwards, the rivets of the first sleeve 62 and the second sleeve 63 are pushed onto the arc grooves on both sides, and the first sleeve 62 and the second sleeve 63 can rotate relative to the connector main body 61, otherwise cannot rotate.

The first sleeve 62 is movably sleeved with the first connecting strut 41, the second sleeve 63 is movably sleeved with the second connecting strut 42, and the first connecting strut 41 and the second connecting strut 42 are movably riveted with the left riveting hole 612 and the right riveting hole 614 of the connector main body 61 respectively through rivets. Wherein compression springs are provided between the first sleeve 62 and the first connecting strut 41 and between the second sleeve 63 and the second connecting strut 42. When the tapered jacking block 64 pushes the first sleeve 62 and the second sleeve 63 to both sides, the first connection strut and the second connection strut are not affected by the compression due to the compression space of the compression spring.

Therefore, when the connecting rod 4 is spread, the rivets of the first and second bushings 62 and 63 are pushed into the left and right rectilinear grooves 617 and 619 by the compression springs, and the degree of freedom of rotation is restricted, thereby achieving the locking effect. When folding is needed, the conical jacking block 64 is jacked upwards, the rivets of the first sleeve 62 and the second sleeve 63 are pushed into the left arc-shaped groove 616 and the right arc-shaped groove 618, unlocking is achieved, the rivets can move along the arc-shaped grooves, and the rotation limitation is released.

For better engagement with the tapered roof block 64, the first sleeve 62 and the second sleeve 63 are provided in a hemispherical shape toward the intermediate end of the connector body 61.

Specifically, the side unlocking type connector includes a first connecting portion 71, a middle clamping portion 72, a compression spring, a second connecting portion 74, and an unlocking button 75. The first connection portion 71 includes a third sleeve 711 and a first rotating portion 712 connected to each other, and the second connection portion 74 includes a fourth sleeve 741 and a second rotating portion 742 connected to each other. In this embodiment, the third sleeve 711 and the first rotating portion 712 are integrally formed, and the fourth sleeve 741 and the second rotating portion 742 are integrally formed.

The first rotating portion 712 is rotatably coupled to the second rotating portion 742. Cavities are formed in the first rotating portion 712 and the second rotating portion 742, and a first flange 713 is disposed around the cavity of the first rotating portion 712. A shaft lever 743 is provided in the middle of the cavity of the second rotating portion 742, and a second flange 744 is provided around the second rotating portion. The middle clamping portion 72 is disposed in the cavities of the first rotating portion 712 and the second rotating portion 742, and clamping grooves 721 are formed at two ends of the middle clamping portion 72 to be clamped with the first protruding edge 713 and the second protruding edge 744. The compression spring is disposed on the shaft 743, one end of the compression spring abuts against the cavity of the second rotating portion 742, and the other end abuts against the intermediate locking portion 72, so as to press the intermediate locking portion 72 against the first rotating portion 712. When the included angle between the third loop bar and the fourth loop bar is 180 degrees or 0 degrees, the clamping groove 721 of the middle clamping portion 72 is clamped with the first convex edge 713 of the first rotating portion 712. Therefore, the first convex edges 713 are provided with two groups, which respectively correspond to positions when the included angle between the third loop bar and the fourth loop bar is 180 degrees or 0 degrees.

The unlocking button 75 passes through the cavity of the first rotating portion and abuts against one end of the middle clamping portion 72. The thickness of the middle clamping portion 72 is smaller than the depth of the cavity of the second rotating portion 742, so that the middle clamping portion 72 cannot be separated from the first protruding edge 713 of the first rotating portion 712 when the compression spring is compressed to the maximum stroke.

By pressing the unlocking button 75, the intermediate locking portion 72 can be pushed to move toward the cavity of the second rotating portion 742, so that the locking groove 721 of the intermediate locking portion 72 is separated from the first protruding edge 713 of the first rotating portion 712, and unlocking is achieved.

Wherein, third loop bar cup joints with first connection branch, and fourth sleeve 741 cup joints with second connection branch.

For better installation of the connecting rod 4, the hinge joint of the corner hinge 5 and the connecting rod 4 is arranged in a semicircular shape which is convenient for sleeving.

In order to reduce the weight of the fence, the connecting rod 4 and the vertical supporting rod 3 are square or round hollow pipes, and are made of aluminum alloy materials, so that the fence is light and durable.

In order to increase the use experience, if a square hollow tube is used, the edges of the square hollow tube are provided with round corners, and anti-collision cotton slivers (not shown in the figure) are arranged on the connecting rods 4 and the vertical supporting rods 3.

As shown in fig. 11 to 13, when in use, the upper and lower frames 2 are unfolded by straightening the first and second connection struts 41 and 42. When the rail is stored, the brake connecting piece is unlocked firstly (the conical top block 64 is moved upwards, and the unlocking button 75 is pressed), the rail can be folded into a beam shape only by folding inwards the middle of the connecting rod 4, the rail is convenient to store and transport, disassembly and assembly are not needed, and the rail is convenient and quick to fold.

Embodiment two:

as shown in fig. 1 to 16, when two or more connecting rods 4 are provided on one side of the upper frame 1, the fence further includes a middle hinge 8 and a middle supporting rod 9, so that the overall stability of the fence is increased. In this embodiment, two connecting rods 4 are provided on one side of the upper frame 1.

The middle hinge 8 is a T-shaped hinge, two hinge openings at the upper end of the middle hinge are respectively movably hinged with the connecting rod 4, and the lower end of the middle hinge is fixedly connected with one end of the middle supporting rod 9. The other end of the middle supporting rod 9 is connected with the middle hinge 8 of the lower frame 2. The middle hinge 8 of the upper frame 1 and the lower frame 2 are identical in structure.

Wherein, the hinge joint of the middle hinge piece 8 and the connecting rod 4 is arranged into a semicircle shape which is convenient for sleeving. The middle supporting rod 9 is a square or round hollow tube and made of aluminum alloy.

For better installation of the connecting rod 4, the hinge joint of the intermediate hinge 8 and the connecting rod 4 is arranged in a semicircular shape which is convenient for sleeving.

In order to increase the use experience, if a square hollow tube is used, the edges of the square hollow tube are provided with round corners, and the middle supporting rod 9 is provided with an anti-collision cotton sliver.

Other technical features are consistent with the embodiments.

In addition, the utility model not only can be completely folded without installation, but also is convenient and quick to use, and is stable and firm in whole.

The present utility model is not limited to the above-mentioned embodiments, and any changes or substitutions that can be easily understood by those skilled in the art within the technical scope of the present utility model are intended to be included in the scope of the present utility model.

Claims (10)

1. An installation-free foldable fence comprises an upper frame, a lower frame and a vertical supporting rod, wherein the upper frame and the lower frame are symmetrically arranged at the upper and lower positions; the method is characterized in that:

the upper frame is a polygonal frame structure formed by enclosing a plurality of connecting rods; corner hinges are arranged at the corners of the upper frame; the corner hinge piece is movably hinged with one end of the connecting rod respectively; the connecting rod comprises a first connecting support rod, an upper connecting piece and a second connecting support rod; the upper connecting piece is arranged between the first connecting support rod and the second connecting support rod; the first connecting support rod, the lower connecting piece, the second connecting support rod and the corner hinge piece of the lower frame are in one-to-one correspondence with the positions of the upper frame;

one end of the vertical supporting rod is fixedly connected with the corner hinge piece of the upper frame, and the other end of the vertical supporting rod is fixedly connected with the corner hinge piece of the lower frame;

at least one of the upper connecting piece and the lower connecting piece is a braking connecting piece.

2. The mount-free foldable enclosure of claim 1, wherein: the brake connecting piece is a bottom unlocking connecting piece, and the bottom unlocking connecting piece comprises a connecting piece main body, a first sleeve, a second sleeve, a compression spring and a conical top block;

the left side and the right side of the connecting piece main body are respectively provided with a left avoidance groove, a left riveting hole, a right avoidance groove, a right riveting hole and a middle hole; the left avoidance groove comprises a left arc groove, and a left straight line groove extending from the upper end of the left arc groove to the middle of the connecting piece main body; the right avoidance groove comprises a right arc groove and a right straight line groove, and the upper end of the right arc groove extends towards the middle of the connecting piece main body;

the first sleeve is arranged on the left avoidance groove through a rivet, and the second sleeve is arranged on the right avoidance groove through a rivet; the conical jacking block is provided with a middle groove, the middle groove is arranged on the middle hole through a rivet, and the upper end of the conical jacking block is positioned between the first sleeve and the second sleeve; when the conical jacking block moves upwards, rivets of the first sleeve and the second sleeve are pushed to arc grooves on two sides, the first sleeve and the second sleeve can rotate relative to the connecting piece main body, and otherwise, the first sleeve and the second sleeve cannot rotate;

the first sleeve is movably sleeved with the first connecting support rod, the second sleeve is movably sleeved with the second connecting support rod, and the first connecting support rod and the second connecting support rod are respectively movably riveted with the left riveting hole and the right riveting hole of the connecting piece main body through rivets; compression springs are arranged between the first sleeve and the first connecting support rod and between the second sleeve and the second connecting support rod.

3. The mount-free foldable enclosure of claim 2, wherein: the first sleeve and the second sleeve are arranged in a hemispherical shape towards one end of the middle of the connecting piece main body.

4. The mount-free foldable enclosure of claim 1, wherein: the braking connecting piece is a side unlocking connecting piece; the side unlocking type connecting piece comprises a first connecting part, a middle clamping part, a compression spring, a second connecting part and an unlocking button;

the first connecting part comprises a third sleeve and a first rotating part which are connected with each other, and the second connecting part comprises a fourth sleeve and a second rotating part which are connected with each other;

the first rotating part and the second rotating part are rotatably sleeved; cavities are formed in the first rotating part and the second rotating part, and first convex edges are arranged around the cavities of the first rotating part; a shaft lever is arranged in the middle of the second rotating part cavity, and second convex edges are arranged around the second rotating part cavity;

the middle clamping part is arranged in the cavities of the first rotating part and the second rotating part, and clamping grooves which are clamped with the first convex edge and the second convex edge are formed in two ends of the middle clamping part;

the compression spring is arranged on the shaft rod, one end of the compression spring is propped against the cavity of the second rotating part, and the other end of the compression spring is propped against the middle clamping part and is used for extruding the middle clamping part to the first rotating part; when the included angle between the third loop bar and the fourth loop bar is 180 degrees or 0 degrees, the clamping groove of the middle clamping part is clamped with the first convex edge of the first rotating part;

the unlocking button passes through the cavity of the first rotating part and is propped against one end of the middle clamping part; the thickness of the middle clamping part is smaller than the depth of the cavity of the second rotating part; the middle clamping part can be pushed to move towards the cavity of the second rotating part by pressing the unlocking button, so that the clamping groove of the middle clamping part is separated from the first convex edge of the first rotating part, and unlocking is realized;

the third sleeve rod is sleeved with the first connecting supporting rod, and the fourth sleeve pipe is sleeved with the second connecting supporting rod.

5. The mount-free foldable enclosure of claim 1, wherein: the upper frame and the lower frame are square structures;

when one side of the upper frame is provided with two or more connecting rods, the fence also comprises a middle hinge piece and a middle supporting rod; the middle hinge piece is a T-shaped hinge piece, two hinge openings at the upper end of the middle hinge piece are respectively movably hinged with the connecting rod, and the lower end of the middle hinge piece is fixedly connected with one end of the middle supporting rod; the other end of the middle supporting rod is connected with a middle hinge piece of the lower frame; the middle hinge parts of the upper frame and the lower frame are consistent in structure.

6. The mount-free foldable enclosure of claim 5, wherein: the hinge openings of the corner hinge piece and the middle hinge piece, which are connected with the connecting rod, are arranged in a semicircular shape which is convenient for sleeving.

7. The mount-free foldable enclosure of claim 1, wherein: the corner hinge piece is a Y-shaped hinge piece, two hinge openings at the upper end of the corner hinge piece of the upper frame are respectively connected with one end of the connecting rod, and the hinge opening at the lower end is connected with one end of the vertical supporting rod; the two hinge openings at the lower end of the corner hinge piece of the lower frame are respectively connected with one end of the connecting rod, and the upper end of the corner hinge piece is connected with the other end of the vertical supporting rod.

8. The mount-free foldable enclosure of claim 5, wherein: the connecting rod, the middle supporting rod and the vertical supporting rod are square or round hollow pipes, and round corners are arranged at edges of the square hollow pipes.

9. The mount-free foldable enclosure of claim 5, wherein: and anti-collision cotton slivers are arranged on the connecting rods, the middle supporting rods and the vertical supporting rods.

10. The mount-free foldable enclosure of claim 5, wherein: the connecting rods, the middle supporting rods and the vertical supporting rods are made of aluminum alloy materials.