CN113243301A

CN113243301A - Pet cage

Info

Publication number: CN113243301A
Application number: CN202110451174.XA
Authority: CN
Inventors: 高翔; 顾惠清; 贺佳沛
Original assignee: Goodbaby Child Products Co Ltd
Current assignee: Goodbaby Child Products Co Ltd
Priority date: 2021-03-10
Filing date: 2021-04-26
Publication date: 2021-08-13
Anticipated expiration: 2041-04-26
Also published as: CN113243301B; CN215302211U; CN215648707U

Abstract

The invention discloses a pet cage, which comprises a cage body with an unfolding state and a folding state and a locking mechanism, the cage body comprises a bottom frame, a top frame, a first side frame and a second side frame which are respectively arranged at two ends of the cage body in the width direction, and two groups of third side frames which are respectively arranged at two ends of the cage body in the length direction, wherein the lower part of the first side frame is connected with the bottom frame, the lower part of the second side frame is connected with the bottom frame, the lower parts of the two groups of third side frames are respectively connected with the bottom frame in a rotating way, the top frame can be arranged between the two groups of third side frames in a relatively sliding way along the up-down direction, the top frame, the bottom frame, the first side frame, the second side frame and the two groups of third side frames are enclosed to form a closed accommodating space, when the cage body is in a folded state, the first side frame and the second side frame are folded between the bottom frame and the top frame along the up-down direction, and the third side frames on the two sides are respectively folded above the top frame. The pet cage provided by the invention is simple and convenient to fold, compact in frame structure after being folded, small in occupied volume and convenient to carry and store.

Description

Pet cage

Technical Field

The invention relates to the field of pet supplies, in particular to a pet cage.

Background

The existing pet cage is not foldable, occupies large space when not used, and is inconvenient to store and transport. In the pet cage that can fold, folding principle diverse exists the folding structure complicacy mostly, folding back volume still great, or cage intensity is lower under the expansion state, buckle scheduling problem easily.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provide a pet cage which can be folded and is simple and convenient to fold.

In order to achieve the purpose, the invention adopts the technical scheme that:

a pet cage comprises a cage body with an unfolding state and a folding state, a locking mechanism used for locking the cage body in the unfolding state, and under the unfolding state, the cage body comprises a bottom frame, a top frame, a first side frame, a second side frame and two sets of third side frames, wherein the first side frame and the second side frame are respectively arranged at two ends which are different in the width direction of the cage body, the two sets of third side frames are respectively arranged at two ends which are different in the length direction of the cage body, the lower part of the first side frame is connected with the bottom frame, the lower part of the second side frame is connected with the bottom frame, the lower parts of the two sets of third side frames are respectively connected with the bottom frame in a rotating manner, the top frame can be arranged between the two sets of third side frames in a relative sliding manner along the vertical direction, the top frame, the bottom frame, the first side frame, the second side frame and the two sets of third side frames are enclosed to form a closed accommodating space, when the cage body is under the folding state, the first side frame and the second side frame are folded between the bottom frame and the top frame along the vertical direction, and the third side frames on the two sides are respectively folded above the top frame.

Preferably, when the cage body is in a folded state, the first side frame and the second side frame are stacked and folded between the top frame and the bottom frame, and a rotation center line of the third side frame rotating relative to the bottom frame is higher in a vertical direction than a height of the top frame after being folded on the bottom frame.

Preferably, in the process of converting the cage body from the unfolded state to the folded state, the two groups of third side frames are turned over in opposite directions and folded towards the upper part of the top frame; and when the cage body is in a folded state, the two groups of third side frames are positioned at the same height above the top frame.

Preferably, the locking mechanism includes a first locking structure disposed between the first side frame and the top frame and/or the third side frames at both sides, and a second locking structure disposed between the first side frame and the bottom frame.

As a preferred embodiment, the first locking structure has two groups respectively disposed on two sides of the upper portion of the first side frame, each group of the first locking structure includes a first bolt disposed on the upper portion of the first side frame and a first slot disposed on the top frame, when the first locking structure is locked, the first bolt is inserted into the corresponding first slot, and when the first locking structure is locked and the second locking structure is unlocked, the upper portion of the first side frame can rotate around the first bolt relative to the top frame; when the first locking structure is unlocked, the first bolt is separated from the first slot.

As a more preferable embodiment, two sliding rails are disposed below the top frame, a set of sliding grooves is formed between each sliding rail and the top frame, each set of sliding grooves is communicated with the first slot on the same side, and the first bolt is slidably/rollably received in the sliding grooves.

As a more preferable embodiment, the second locking structure has two sets respectively disposed at two sides of the lower portion of the first side frame, each set of the second locking structure includes a second bolt disposed at the lower portion of the third side frame and a second slot disposed on the bottom frame, when the second locking structure is locked, the second bolt is inserted into the corresponding second slot, and when the second locking structure is locked and the first locking structure is unlocked, the lower portion of the first side frame can rotate around the second bolt relative to the bottom frame; and when the second locking structure is unlocked, the second bolt is disengaged from the second slot.

Preferably, top frame and both sides be provided with between the third side frame and provide top frame follows the guide structure of upper and lower direction sliding guide, the cage body is by the in-process of expansion state to fold condition conversion, the top frame is followed the third side frame slides from top to bottom and with first side frame the second side frame the underframe is drawn in along the upper and lower direction.

In a preferred embodiment, the guide structure includes a guide rail and a guide member, two sets of the guide rails are disposed on an inner side portion of each side of the third side frame, each set of the guide rails is along a vertical direction, the guide member is disposed on a side portion of the top frame, and the guide member is slidably disposed along the guide rails in a vertical direction.

Preferably, the locking mechanism further comprises a top frame locking mechanism, the top frame locking mechanism is arranged between the top frame and the tops of the third side frames on the two sides of the top frame, the top frame is further provided with an unlocking mechanism, and the unlocking mechanism is used for synchronously unlocking all the top frame locking mechanisms.

Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages: according to the pet cage provided by the invention, the frame bodies are mutually supported in the unfolded state, so that the pet cage is not easy to bend and has high strength; the folding pet cage is simple and convenient to operate during folding, the folding principle is ingenious, the bottom frame, the top frame, the first side frame, the second side frame and the third side frame are folded flatly and mutually together under the folding state, the structure is compact, the pet cage occupies small size, and the carrying and the storage are convenient.

Drawings

In order to more clearly illustrate the technical solution of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic perspective view of a pet cage according to an embodiment of the present invention in an expanded state;

FIG. 2 is a side schematic view of the pet cage of FIG. 1;

FIG. 3 is a schematic front view of the pet cage of FIG. 1;

FIG. 4 is an exploded perspective view of the pet cage of this embodiment;

FIG. 5 is a schematic perspective view of the pet cage of this embodiment, wherein the first side frame and the second side frame both rotate downward;

FIG. 6 is a perspective view of the pet cage of this embodiment, wherein the first side frame and the second side frame are both folded on the bottom frame;

FIG. 7 is a schematic front view of the pet cage of FIG. 6;

FIG. 8 is a schematic perspective view of the pet cage of this embodiment, wherein the top frame slides downwardly;

FIG. 9 is a schematic front view of the pet cage of FIG. 8;

FIG. 10 is a schematic perspective view of the pet cage in a folded state;

FIG. 11 is a side elevational schematic view of the pet cage of FIG. 10;

FIG. 12 is a front view of the pet cage of FIG. 10;

FIG. 13 is a perspective view of the pet cage of this embodiment, wherein the first side frame is rotated upwardly;

FIG. 14 is a side elevational schematic view of the pet cage of FIG. 13;

FIG. 15 is a schematic cross-sectional view of the pet cage of FIG. 13;

FIG. 16 is an enlarged view taken at A in FIG. 15;

FIG. 17 is a schematic view of the first side frame of FIG. 15 sliding inwardly relative to the top frame;

wherein: 100. a bottom frame; 200. a top frame; 300. a first side frame; 400. a second side frame; 500. a third side frame; 501. a guide rail;

1. a frame body; 2. a protective net; 3. a base plate; 41. a slide rail; 42. a first latch (roller); 51. a second bolt; 52. a second slot; 61. a third bolt; 71. guides (latches); 72. locking the groove; 73. an unlocking knob; 74. a traction cable; 81. a column; 811. a card slot; 812. connecting columns; 82. a protrusion; 83. connecting grooves;

x, a first rotation center line; y, a second rotation center line; z, a third rotation center line; p, a fourth rotation center line.

Detailed Description

Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings so that the advantages and features of the invention may be more readily understood by those skilled in the art.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "vertical", "horizontal", "inner", "outer", "height direction", etc. indicate the orientation or positional relationship shown in the normal use of the pet cage placed on a horizontal plane based on fig. 1, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element referred to must have a specific orientation, only a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

It should be noted that, unless otherwise specified, when a feature is referred to as being "fixed" or "connected" to another feature, it may be directly fixed or connected to the other feature or indirectly fixed or connected to the other feature. Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art. Further, the description of the upper, lower, left, right, etc. used in the present invention is only with respect to the positional relationship of the respective components of the present invention with respect to each other in the drawings.

Referring to fig. 1 to 3, a pet cage includes a cage body having an expanded state and a collapsed state, and a locking mechanism for locking the cage body in the expanded state. Under the expansion state, the cage body is cuboid shape, including underframe 100, top frame 200, first side frame 300, second side frame 400 and two sets of third side frames 500 that splice together each other, wherein first side frame 300 and second side frame 400 divide and locate the different both ends in the cage body width direction, and two sets of third side frames 500 divide and locate the different both ends in the cage body length direction. The bottom frame 100, the top frame 200, the first side frame 300, the second side frame 400 and the two sets of third side frames 500 form six sides of a cuboid, and a closed accommodating space is defined, and pets can be placed in the accommodating space.

Referring to fig. 4, in the present embodiment, the bottom frame 100, the top frame 200, the first side frame 300, the second side frame 400, and the third side frame 500 all include a hard frame body 1, which form a basic rectangular frame; the bottom frame 100 further includes a closed bottom plate 3 provided in the frame body 1; the top frame 200, the first side frame 300, the second side frame 400, and the third side frame 500 each include a protection net 2 provided on the frame 1. So, underframe 100 can support steadily in the pet below, and the inside circulation of air with the external world of the internal portion of cage can be guaranteed to other sides of the cage body, makes things convenient for the pet to observe the external world, and the observer of outside also can see clearly in the cage.

In the pet cage in the embodiment, all the frame bodies 1 are not bendable, and the folding of the cage body is not required to be realized through the folding of the frame body 1, so that the frame bodies 1 on six sides are mutually supported when the cage body is in an unfolded state, the structure is stable and firm, the bending deformation caused by collision cannot occur, and the strength of the cage body is high.

In the embodiment, the pet cage can be folded when not in use, so that the volume of the cage body is greatly reduced. Specifically, the lower portion of the first side frame 300 is rotatably connected to the bottom frame 100 around the first rotation center line X, the lower portion of the second side frame 400 is rotatably connected to the bottom frame 100 around the second rotation center line Y, the lower portions of the two sets of third side frames 500 are rotatably connected to the bottom frame 100 around the third rotation center line Z, respectively, and the top frame 200 is disposed between the two sets of third side frames 500 in a vertically slidable manner. The first rotation center line X and the second rotation center line Y are parallel to each other and extend along the length direction of the cage body; the two third rotation center lines Z are parallel to each other and extend along the width direction of the cage body.

In this embodiment, the height of the cage is not greater than the width of the cage, and the distance between the third side frames 500 on both sides is slightly greater than the length of the first side frame 300 and the second side frame 400, so that the first side frame 300 and the second side frame 400 can rotate downward without interference and can be folded above the bottom frame 100. On the other hand, the top of the frame 1 of the bottom frame 100 is slightly higher than the bottom plate 3, so as to form an accommodating space above the bottom plate 3, when the first side frame 300 and the second side frame 400 are both turned downwards, at least one of the first side frame and the second side frame can be accommodated in the accommodating space, and the folding height of the cage is further reduced. It should be noted that the first side frame 300 and the second side frame 400 are not folded in sequence, and the stacking order of the two in the folded state is not limited.

As shown in fig. 13 to 17, as a preferred design of the present embodiment, the first side frame 300 can not only rotate downward relative to the bottom frame 100 around the first rotation center line X, but also the first side frame 300 can be connected to the top frame 200 both relatively rotatably and relatively slidably. Specifically, the two sides of the upper portion of the first side frame 300 are respectively provided with a roller 42, the two sliding rails 41 are arranged below the top frame 200, a set of sliding grooves is formed between each sliding rail 41 and the top frame 200, and the rollers 42 can be slidably or rollably accommodated in the sliding grooves, so as to provide sliding guidance for the first side frame 300 when being folded relative to the top frame 200. The axis of the roller 42 forms a fourth rotation center line P, and the first side frame 300 can be firstly turned upwards around the fourth rotation center line P to be horizontal, and then slides along the sliding groove and is folded under the top frame 200. In this embodiment, the sliding rails 41 are specifically disposed on two short sides of the top frame 200, the sliding grooves extend along the width direction of the top frame 200, and the fourth rotation center line P is parallel to the first rotation center line X.

Due to the above arrangement, the locking mechanism in the present embodiment includes a first locking structure provided between the first side frame 300 and the top frame 200, a second locking structure provided between the first side frame 300 and the bottom frame 100, and a third locking structure provided between the second side frame 400 and the top frame 200. The locking mechanism adopts a structure that the bolt is matched with the slot, in other embodiments, the specific arrangement of the locking mechanism can also adopt other prior arts, and the invention is not limited.

Referring to fig. 4, in the present embodiment, as for the first side frame 300, since it can rotate around both the first rotation center line X and the fourth rotation center line P, for the sake of structural simplicity, the latch provided on the first side frame 300 can also be used as a rotation shaft to which it is rotatably connected.

Specifically, the first locking structure includes two sets of first pins 42 disposed at both sides of the upper portion of the first side frame 300, and two sets of first slots disposed on the top frame 200 and engaged with the first pins 42, the first pins 42 are slidably coupled to the frame body 1 of the first side frame 300, the first locking structure further includes an elastic member for providing an acting force required for the first pins 42 to move toward the first slots, and an unlocking member for allowing the first pins 42 to exit the first slots.

The second locking structure includes two sets of second pins 51 disposed at both sides of a lower portion of the first side frame 300, and two sets of second slots 52 disposed on the bottom frame 100 and engaged with the second pins 51, the second pins 51 being slidably coupled to the frame body 1 of the first side frame 300, an elastic member for providing an acting force required for the second pins 51 to move toward the second slots 52, and unlocking members for respectively withdrawing the second pins 51 from the second slots 52.

In fact, the first latch 42 and the roller 42 are the same component, and the first slot and the sliding slot on the same side are communicated with each other, when the first side frame 300 needs to rotate upward around the fourth rotation center line P, the first locking structure is locked, the first latch 42 is inserted into the first slot, and the unlocking piece is operated to disengage the second latch 51 from the second slot 52, so that the second locking structure is unlocked. Similarly, the second latch 51 is also a rotation axis between the first side frame 300 and the bottom frame 100, when the first side frame 300 needs to be rotated downward around the first rotation center line X, the second locking structure is locked, the second latch 51 is inserted into the second slot 52, and the unlocking member is operated to disengage the first latch 42 from the first slot, so that the first locking structure is unlocked.

For the second side frame 400, the third locking structure includes two sets of third pins 61 slidably disposed at both sides of the upper portion of the second side frame 400, two sets of third slots disposed on the top frame 200 and engaged with the third pins 61, and an elastic member for providing a force required for the third pins 61 to move toward the third slots and an unlocking member for unlocking. The locking and unlocking principle of the third locking structure is basically the same as that of the second locking structure, and the description is omitted here. When the third locking structure is unlocked, the second side frame 400 can be rotated downward about the second rotation center line Y.

In other embodiments, the locking mechanism may be disposed between the first side frame 300 and the third side frames 500 on both sides, between the second side frame 400 and the third side frames 500 on both sides, and the like, so as to achieve the purpose of locking and unlocking.

Referring to fig. 4, in the present embodiment, the top frame 200 can slide in the up-down direction with respect to the third side frame 500. The inner sides of the two sets of third side frames 500 are provided with guide rails 501 extending in the up-down direction, where the guide rails 501 are specifically of a guide groove structure, and the side of the top frame 200 is provided with a guide 71, and the guide 71 is slidably provided up and down along the guide rails 501. Specifically, two sets of guide rails 501 are arranged on the third side frame 500 on each side, four sets of guide members 71 are arranged on the top frame 200, and each set of guide members 71 is matched with one set of guide rails 501, so that the top frame 200 can slide up and down smoothly. In addition, the guide 71 also functions as a stopper so that the top frame 200 does not separate from the third side frame 500 during the upward sliding.

In this embodiment, the locking mechanism further includes a top frame locking mechanism disposed between the top frame 200 and the third side frames 500 on both sides, and the top frame 200 is further provided with an unlocking mechanism for synchronously unlocking all the top frame locking mechanisms. Specifically, the top frame locking mechanism includes four locking pins 71 respectively disposed at four corners of the top frame 200, and locking grooves 72 respectively disposed at tops of the two sets of third side frames 500 to be engaged with the locking pins 71, and further includes an elastic member (not shown in the drawings) for providing a force required to move the locking pins 71 toward the locking grooves 72. The unlocking mechanism comprises an unlocking operator which links all the locking pins 71 away from the corresponding locking slots 72. The unlocking operation member is specifically an unlocking knob 73 arranged at the top of the top frame 200, and the unlocking knob 73 is connected with each locking pin 71 through a traction cable 74, so that when the unlocking knob 73 is rotated, all the locking pins 71 can be linked to be separated from the locking grooves 72. Further, the frame body 1 of the top frame 200 comprises a transverse frame extending along the length direction of the top frame 200 in addition to a rectangular frame arranged around the periphery, the unlocking knob 73 is rotatably arranged on the transverse frame, the traction cable 74 is arranged in the frame body 1 in a penetrating way, and the four lock pins 71 are arranged at the side part of the frame body 1 in a sliding way, so that the appearance of the pet cage is attractive and neat.

It should be noted that the lock pin 71 in this embodiment has substantially the same structure as the guide 71, and only plays a different role in different states, that is, when the lock pin 71 is inserted into the lock groove 72 in the deployed state of the cage, and when the top frame locking mechanism is unlocked, the lock pin 71 is disengaged from the lock groove 72, and the top frame 200 slides downward, so that the lock pin 71 slides in the guide rail 501 as the guide 71. The structure of the pet cage is simpler due to the arrangement.

Referring to fig. 4, four corners of the rectangular frame 1 of the bottom frame 100 are respectively provided with a section of upright post 81 extending upward, the upper portion of each upright post 81 is further fixedly provided with a section of connecting post 812 extending upward, and each group of third side frames 500 is rotatably connected with the upper portions of the two connecting posts 812 at the same side around the third rotation center line Z. The third rotation center line Z, which is set to rotate the third side frame 500 with respect to the bottom frame 100, is higher in the vertical direction than the top frame 200 is folded on the bottom frame 100.

Referring to fig. 4 and 10, since the third rotation center line Z is higher than the upper surface of the bottom plate 3, the rotation connection point of the third side frame 500 is higher than the bottom of the third side frame 500 in order to prevent a gap from being left between the third side frame 500 and the bottom frame 100 in the deployed state of the cage. Specifically, the inner side of the third side frame 500 is further opened with two sets of connecting slots 83, and each connecting column 812 is inserted into the corresponding connecting slot 83 and rotatably connected with the third side frame 500. In order to further improve the connection strength between the third side frame 500 and the bottom frame 100, the upper surface of each upright 81 is an inclined surface gradually inclined downwards and extends from inside to outside, and a clamping groove 811 is arranged on the outermost side of the inclined surface; accordingly, the lower end of the frame body 1 at both sides of the third side frame 500 is a slant surface which is matched with the upright 81, and the outer lower part of the slant surface is provided with a protrusion 82 which is matched with the locking groove 811. Thus, when the third side frame 500 is erected on both sides of the bottom frame 100, the connecting column 812 is located in the connecting groove 83, the protrusion 82 is fittingly clamped in the clamping groove 811, and the third side frame 500 is not prone to shaking; when the third side frame 500 rotates inward relative to the bottom frame 100, the connecting post 812 is disengaged from the connecting groove 83, and the protrusion 82 is disengaged from the engaging groove 811.

On the other hand, in order to make the third rotation center line Z higher than the height of the top frame 200 after being folded on the bottom frame 100, the lower end portion of the guide rail 501 extends up to below the connection column 812 in the vertical direction, so that the top frame 200 can be folded with the bottom frame 100 as low as possible.

The folding principle of the pet cage of the present embodiment is specifically described below:

referring to fig. 1 to 3, when the cage is in the unfolded state, the bottom frame 100, the top frame 200, the first side frame 300, the second side frame 400 and the two sets of third side frames 500 are unfolded to form an accommodating space, the locking mechanisms are in the locked state, the locking pins 71 are inserted into the corresponding locking grooves 72, and the cage is stable in structure and not prone to deformation.

Referring to fig. 13 to 17, when the cage body is in the unfolded state, the first side frame 300 can be used as a door of the pet cage, so that a pet can conveniently enter and exit. Specifically, the second locking structure is firstly unlocked, and then the first side frame 300 is driven to rotate upward around the fourth rotation center line P, so that when the first side frame 300 rotates to be horizontal, the first side frame can be pushed to slide inward along the sliding groove and be folded under the top frame 200. At this time, the first side frame 300 is completely opened, and the pet can freely enter and exit. When the cage body needs to be closed again, the steps are operated in the reverse direction, and the detailed description is omitted here.

Referring to fig. 5 to 7, when it is required to fold the cage, the operation is performed based on the unfolded state shown in fig. 1, that is, the lower portion of the first side frame 300 is connected to the bottom frame 100. At this time, the first locking structure and the third locking structure need to be unlocked, and the first side frame 300 and the second side frame 400 need to be driven to rotate downward around the first rotation center line X and the second side frame 400 rotates downward around the second rotation center line Y simultaneously or sequentially, so that the first side frame 300 and the second side frame 400 are both folded above the bottom frame 100, taking the first side frame 300 stacked on the second side frame 400 as an example in this embodiment.

Referring to fig. 8 to 9, the unlocking knob 73 is then rotated to unlock the top frame locking mechanism, and all the lock pins 71 are disengaged from the lock grooves 72 and enter the guide rails 501 as the guides 71 to provide sliding guidance for the top frame 200. When the top frame 200 slides to the bottom, the top frame 200, the first side frame 300, the second side frame 400 and the bottom frame 100 are stacked from top to bottom.

Referring to fig. 10 to 12, finally, the third side frames 500 on both sides are respectively turned around the third rotation center line Z to be folded toward the top of the top frame 200, and the height of the third rotation center line Z is higher than the stacking height of the top frame 200, the first side frame 300, the second side frame 400, and the bottom frame 100, so that the third side frames 500 can rotate without interference, and the two sets of the third side frames 500 are located at the same height above the top frame 200.

In conclusion, the pet cage of this embodiment is simple and convenient to fold, and under the folded condition, the height of the cage body is about the sum of the heights of the bottom frame 100, the first side frame 300, the top frame 200 and the single third side frame 500, and the cage body is very flat, and each component has a compact structure, the volume is greatly reduced, and the pet cage is convenient to carry and store.

The above-mentioned embodiments are merely illustrative of the technical idea and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the scope of the present invention, and all equivalent changes or modifications made according to the spirit of the present invention should be covered in the scope of the present invention.

Claims

1. A pet cage comprising a cage body having an expanded state and a collapsed state, a locking mechanism for locking the cage body in the expanded state, characterized in that: in an unfolded state, the cage body comprises a bottom frame, a top frame, a first side frame and a second side frame which are respectively arranged at two ends of the cage body in the width direction, and two groups of third side frames which are respectively arranged at two ends of the cage body in the length direction, wherein the lower part of the first side frame is connected with the bottom frame, the lower part of the second side frame is connected with the bottom frame, the lower parts of the two groups of third side frames are respectively connected with the bottom frame in a rotating way, the top frame can be arranged between the two groups of third side frames in a relative sliding way along the up-down direction, and the top frame, the bottom frame, the first side frame, the second side frame and the two groups of third side frames are enclosed to form a closed accommodating space,

when the cage body is in a folded state, the first side frame and the second side frame are folded between the bottom frame and the top frame along the vertical direction, and the third side frames on two sides are respectively folded above the top frame.

2. The pet cage of claim 1, wherein: when the cage body is in a folded state, the first side frame and the second side frame are folded between the top frame and the bottom frame in a stacking mode, and the rotating center line of the third side frame, which rotates relative to the bottom frame, is higher than the height of the top frame after the top frame is folded on the bottom frame in the vertical direction.

3. The pet cage of claim 1, wherein: in the process of converting the cage body from the unfolding state to the folding state, the two groups of third side frames are turned over in opposite directions and folded towards the upper part of the top frame; and when the cage body is in a folded state, the two groups of third side frames are positioned at the same height above the top frame.

4. The pet cage of claim 1, wherein: the locking mechanism comprises a first locking structure and a second locking structure, the first locking structure is arranged between the first side frame and the top frame and/or the third side frames on two sides, and the second locking structure is arranged between the first side frame and the bottom frame.

5. The pet cage of claim 4, wherein: the first locking structure is provided with two groups which are respectively arranged at two sides of the upper part of the first side frame, each group of the first locking structure comprises a first bolt arranged at the upper part of the first side frame and a first slot arranged on the top frame, when the first locking structure is locked, the first bolt is inserted into the corresponding first slot, and when the first locking structure is locked and the second locking structure is unlocked, the upper part of the first side frame can rotate around the first bolt relative to the top frame; when the first locking structure is unlocked, the first bolt is separated from the first slot.

6. The pet cage of claim 5, wherein: two sliding rails are arranged below the top frame, a group of sliding grooves are formed between each sliding rail and the top frame, each group of sliding grooves is communicated with the first slot on the same side, and the first bolt can be contained in the sliding grooves in a sliding/rolling manner.

7. The pet cage of claim 4, wherein: the second locking structures are provided with two groups which are respectively arranged at two sides of the lower part of the first side frame, each group of second locking structures comprises a second bolt arranged at the lower part of the third side frame and a second slot arranged on the bottom frame, when the second locking structures are locked, the second bolts are inserted into the corresponding second slots, and when the second locking structures are locked and the first locking structures are unlocked, the lower part of the first side frame can rotate around the second bolts relative to the bottom frame; and when the second locking structure is unlocked, the second bolt is disengaged from the second slot.

8. The pet cage of claim 1, wherein: the top frame and the two sides are provided with a guide structure between the third side frames, the top frame is slidably guided in the up-down direction, the cage body is converted from an unfolding state to a folding state, the top frame is guided along the third side frames, the third side frames slide from top to bottom and are folded in the first side frames, the second side frames and the bottom frame in the up-down direction.

9. The pet cage of claim 8, wherein: the guide structure comprises guide rails and guide pieces, wherein each side of the guide structure is provided with two groups of guide rails on the inner side portion of the third side frame, each group of guide rails is arranged along the vertical direction, the guide pieces are arranged on the side portions of the top frames, and the guide pieces can be arranged along the guide rails in a vertically sliding mode.

10. A pet cage according to any one of claims 1 to 9, wherein: the locking mechanism further comprises a top frame locking mechanism, the top frame locking mechanism is arranged between the top frame and the tops of the third side frames on the two sides, an unlocking mechanism is further arranged on the top frame, and the unlocking mechanism is used for synchronously unlocking the top frame locking mechanism.