PLAYPEN

Abstract

A playpen is provided, including a first support rod and a folding frame. The number of the first support rod is at least four. The folding frame has a polygon structure formed by end-to-end sequential connection of a plurality of folding structures. The first support rod is vertically arranged on the same side of the polygon structure. Each of the folding structures includes a first folding assembly, a second folding assembly and a fastening mechanism. The first folding assembly and the second folding assembly are rotatably connected to a top end of the first support rod. The fastening mechanism includes a fastening part and a fastening hole. One of the fastening part and the fastening hole is provided on the first folding assembly, and the other of the fastening part and the fastening hole is provided on the second folding assembly.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims the benefit of priority from Chinese Patent Application No. 202420588362.6, filed on Mar. 25, 2024. The content of the aforementioned application, including any intervening amendments thereto, is incorporated herein by reference in its entirety.

TECHNICAL FIELD

This application relates to safety play fences for children, and more particularly to a playpen.

BACKGROUND

The playpen is used to confine children to play within a specific safety area, and can ensure the safety of children when their parents are absent. Most of the existing playpens are composed of a frame and a fabric sleeved thereon, and the frame is composed of multiple support rods connected by three-way connectors. Such playpens are in a fixed state after assembly, and cannot be stored in a folded state. When not in use, it is required to pull the support rods out from the fabric and then fold the fabric, so as to complete the storage of the playpen, resulting in large time consumption and high labor intensity.

SUMMARY

In view of the above problems in the prior art, it is necessary to provide a playpen which can be simply and rapidly folded to be stored.

This application provides a playpen, comprising:

• • a first support rod; and
  • a folding frame;
  • wherein the number of the first support rod is at least four; and
  • the folding frame has a polygon structure formed by end-to-end sequential connection of a plurality of folding structures; the first support rod is vertically arranged on the same side of the polygon structure; each of the plurality of folding structures comprises a first folding assembly, a second folding assembly and a fastening mechanism; the first folding assembly and the second folding assembly are rotatably connected to a top end of the first support rod; the fastening mechanism comprises a fastening part and a fastening hole; one of the fastening part and the fastening hole is provided on the first folding assembly, and the other of the fastening part and the fastening hole is provided on the second folding assembly; the fastening part is configured to be in snap fit with the fastening hole to limit folding of the plurality of folding structures, so as to maintain the playpen in an unfolded state; and the fastening part is also configured to be detached from the fastening hole to allow the plurality of folding structures to be folded.

In an embodiment, the playpen further comprises a plurality of first connecting parts; each of the plurality of first connecting parts is provided on the top end of the first support rod; each of the plurality of first connecting parts is provided with a first connecting groove and a second connecting groove, and an axis of the first connecting groove is perpendicular to an axis of the second connecting groove; for two first folding assemblies of any adjacent two folding structures among the plurality of folding structures, two ends of one of the two first folding assemblies are rotatably connected with the first connecting groove of one of adjacent two first connecting parts among the plurality of first connecting parts and the second connecting groove of the other of the adjacent two first connecting parts, respectively; two ends of the other of the two first folding assemblies are rotatably connected with the second connecting groove of one of the adjacent two first connecting parts and the first connecting groove of the other of the adjacent two first connecting parts, respectively.

In an embodiment, the first folding assembly comprises a first connecting rod, a second connecting part and a second connecting rod; a top end of the second connecting part is provided with a first accommodating groove and a second accommodating groove opposite to each other; the first accommodating groove and the second accommodating groove are both configured to open upward; a first end of the first connecting rod is rotatably provided in the first accommodating groove, and a second end of the first connecting rod is rotatably connected with the first connecting groove of one of the adjacent two first connecting parts; a first end of the second connecting rod is rotatably provided in the second accommodating groove, and a second end of the second connecting rod is rotatably connected with the second connecting groove of the other of the adjacent two first connecting parts; a side of the second connecting part close to the second folding assembly is provided with the fastening hole, and the fastening hole is configured to hold the fastening part.

In an embodiment, the playpen further comprises a plurality of third connecting parts; each of the third connecting parts is sleevedly provided outside the first support rod, and the plurality of third connecting parts are provided below the plurality of first connecting parts; each of the plurality of third connecting part is provided with a third connecting groove and a fourth connecting groove; an axis of the third connecting groove is parallel to the axis of the first connecting groove, and an axis of the fourth connecting groove is parallel to the axis of the second connecting groove; for two second folding assemblies of the any adjacent two folding structures, two ends of one of the two second folding assemblies are rotatably connected with the third connecting groove of one of adjacent two third connecting parts among the plurality of third connecting parts and the fourth connecting groove of the other of the adjacent two third connecting parts, respectively; and two ends of the other of the second folding assemblies are rotatably connected with the fourth connecting groove of one of the adjacent two third connecting parts, and the third connecting groove of the other of the adjacent two third connecting part, respectively.

In an embodiment, the second folding assembly comprises a third connecting rod, a fourth connecting part and a fourth connecting rod; a top end of the fourth connecting part is provided with a third accommodating groove and a fourth accommodating groove parallel to each other; the third accommodating groove and the fourth accommodating groove are both configured to open downward; a first end of the third connecting rod is rotatably provided in the third accommodating groove, and a second end of the third connecting rod is rotatably connected with the third connecting groove of one of the adjacent two third connecting parts; a first end of the fourth connecting rod is rotatably provided in the fourth accommodating groove, and a second end of the fourth connecting rod is rotatably connected the fourth connecting groove of the other of the adjacent two third connecting parts; the fastening part is provided on a side of the fourth connecting part close to the second connecting part; and the fastening part is configured to be engaged with the fastening hole to realize snap fit between the first folding assembly and the second folding assembly.

In an embodiment, the second folding assembly further comprises a second support rod; a bottom end of the fourth connecting part is provided with a fifth accommodating groove, and a top end of the second support rod is configured to be accommodated in the fifth accommodating groove; and the second support rod is configured to support the first folding assembly.

In an embodiment, each of the plurality of folding structures further comprises a third folding assembly; each of the plurality of first connecting parts is provided with a fifth connecting groove and a sixth connecting groove; an axis of the fifth connecting groove is parallel to the axis of the first connecting groove, and an axis of the sixth connecting groove is parallel to the axis of the second connecting groove; for two third folding assemblies of the any adjacent two folding structures, two ends of one of the two third folding assemblies are rotatably connected with the fifth connecting groove of one of the adjacent two first connecting parts and the sixth connecting groove of the other of the adjacent two first connecting parts, respectively; and two ends of the other of the two third folding assemblies are rotatably connected with the sixth connecting groove of one of the adjacent two first connecting parts and the fifth connecting groove of the other of the adjacent two first connecting parts, respectively.

In an embodiment, the third folding assembly comprises a fifth connecting rod, a fifth connecting part and a sixth connecting rod; the fifth connecting part is sleevedly provided outside the second support rod, and is located below the fourth connecting part; a top end of the fifth connecting part is provided with a sixth accommodating groove and a seventh accommodating groove parallel to each other, and the sixth accommodating groove and the seventh accommodating groove are configured to open upward; a first end of the fifth connecting rod is rotatably provided in the sixth accommodating groove, and a second end of the fifth connecting rod is rotatably connected with the fifth connecting groove of one of the adjacent two first connecting parts; a first end of the sixth connecting rod is rotatably provided in the seventh accommodating groove, and a second end of the sixth connecting rod is rotatably connected with the sixth connecting groove of the other of the adjacent two first connecting parts.

In an embodiment, the fifth connecting rod is articulated with the third connecting rod; and the sixth connecting rod is articulated with the fourth connecting rod.

In an embodiment, the fastening part comprises a protruding portion and a engaging portion; a first end of the protruding portion is connected with the second folding assembly, and the engaging portion is provided on a second end of the protruding portion; the fastening hole comprises a first clamping slot and a second clamping slot; an opening of the second clamping slot is provided with a flange; an inner diameter of the first clamping slot is larger than an outer diameter of the engaging portion, and the outer diameter of the engaging portion is larger than an inner diameter of the opening of the second clamping slot; an outer diameter of the protruding portion is smaller than an inner diameter of the second clamping slot; and the fastening part is configured to move from the first clamping slot to the second clamping slot to allow the engaging portion to be in snap fit with the flange, so as to achieve snap fit between the fastening part and the fastening hole.

This application provides the folding frame and the first support rod, and the folding frame is formed by end-to-end sequential connection of the plurality of folding structures. Adjacent two first support rods are connected through the first folding assembly and the second folding assembly. The first folding assembly and the second folding assembly are configured to rotate relative to the first support rod. When the playpen is used, the first folding assembly and the second folding assembly are configured to be fully unfolded and relatively fixed by the fastening mechanism to maintain the unfolded state of the playpen. When the playpen is needed to be stored, the fastening part is configured to be detached from the fastening hole to unfix the first folding assembly, in this way, the first folding assembly and the second folding assembly are configured to be folded, respectively to fully gather the playpen. Therefore, the playpen of the present disclosure has advantages of convenient disassembly and assembly, simple folding, and short storage time, and can reduce the labor intensity of the operator.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to illustrate the technical solutions of embodiments of this application or in the prior art more clearly, the required accompanying drawings will be briefly introduced below. It is obvious that presented in the accompanying drawings are merely some embodiments of this application. For those of ordinary skill in the art, other relevant accompanying drawings can also be obtained according to these drawings without making creative effort.

FIG. 1 structurally illustrates a playpen according to an embodiment of the present disclosure in an unfolded state.

FIG. 2 structurally shows the playpen according to an embodiment of the present disclosure in a transition state during the conversion from the unfolded state to a folded state.

FIG. 3 is an enlarged view of portion “A” in FIG. 2.

FIG. 4 structurally shows the playpen according to an embodiment of the present disclosure in the folded state.

FIG. 5 is a structural diagram of a second connecting part according to an embodiment of the present disclosure.

FIG. 6 is a structural diagram of a fourth connecting part according to an embodiment of the present disclosure.

FIG. 7 is a structural diagram of a first connecting part according to an embodiment of the present disclosure.

FIG. 8 is a structural diagram of a third connecting part according to an embodiment of the present disclosure.

FIG. 9 is a structural diagram of a fifth connecting part according to an embodiment of the present disclosure.

FIG. 10 is a structural diagram of a support base according to an embodiment of the present disclosure.

In the figures: 1, first support rod; 2, folding structure; 21, first folding assembly; 211, first connecting rod; 212, second connecting part; 2121, limiting part; 2122, groove; 213, second connecting rod; 214, first accommodating groove; 215, second accommodating groove; 216, fastening hole; 2161, first clamping slot; 2162, second clamping slot; 22, second folding assembly; 221, third connecting rod; 222, fourth connecting part; 223, fourth connecting rod; 224, third accommodating groove; 225, fourth accommodating groove; 227, second support rod; 23, fastening part; 231, engaging portion; 232, protruding portion; 24, third folding assembly; 241, fifth connecting rod; 242, fifth connecting part; 2421, second through hole; 243, sixth connecting rod; 244, sixth accommodating groove; 245, seventh accommodating groove; 3, first connecting part; 31, first connecting groove; 32, second connecting groove; 33, fifth connecting groove; 34, sixth connecting groove; 4, third connecting part; 41, third connecting groove; 42, fourth connecting groove; 43, first through hole; and 5, support base.

The objects, functional characteristics and advantages of the present disclosure will be further described below with reference to embodiments and accompanying drawings.

DETAILED DESCRIPTION OF EMBODIMENTS

The technical solutions of this application will be clearly and completely described below with reference to the accompanying drawings. It is obvious that described herein are only some embodiments of the present disclosure, rather than all embodiments. Based on the embodiments of the present disclosure, other embodiments obtained by those of ordinary skill in the art without making creative effort shall fall within the scope of the present disclosure.

It should be noted that the terms, such as “up”, “down”, “left”, “right”, “front”, “rear” and other directional indications used herein, are only used for illustrating relative position relationship and motion between components in a specific state (as shown in the accompanying drawings). If the specific state changes, the directional indication accordingly changes.

In addition, the terms “first” and “second” are only used for distinguishment rather than indicating or implying the relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with “first” or “second” may explicitly or implicitly indicates the inclusion of at least one of such feature. Besides, the term “and/or” used herein includes three solutions, for example, “A” and/or “B” includes solution “A”, solution “B”, and a combination thereof. Technical solutions of embodiments can be combined with each other as long as the combined solution can be implemented by those skilled in the art. When a combination of the technical solutions is contradictory or cannot be realized, it should be considered that such a combination does not exist, and is not within the scope of the present disclosure.

As used herein, an axis of a groove is defined to be along a direction from a groove bottom to a groove opening.

Referring to FIGS. 1-4, this application provides a playpen, including a first support rod 1 and a folding frame having a polygon structure. The number of the first support rod 1 is at least four. A folding structure 2 is provided between two adjacent first support rods 1, and a plurality of folding structures 2 are sequentially connected in an end-to-end manner to form the polygon structure of the folding frame. The first support rod 1 is vertically arranged on the same side of the polygon structure. The folding structure 2 includes a first folding assembly 21, a second folding assembly 22 and a fastening mechanism. The first folding assembly 21 and the second folding assembly 22 are rotatably connected to an end of the first support rod 1. The fastening mechanism includes a fastening part 23 and a fastening hole 216. One of the fastening part 23 and the fastening hole 216 is provided on the first folding assembly 21, and the other of the fastening part 23 and the fastening hole 216 is provided on the second folding assembly 22. The fastening part 23 is configured to be in snap fit with the fastening hole 216 to limit folding of the plurality folding structures 2. And the fastening part 23 is also configured to be detached from the fastening hole 216 to allow the plurality of folding structures 2 to be folded.

This application provides the folding frame and the first support rod 1, and the folding frame is formed by a connection of the plurality of folding structures 2. Adjacent two first support rods 1 are connected through the first folding assembly 21 and the second folding assembly 22. The first folding assembly 21 and the second folding assembly 22 are configured to rotate relative to the first support rod 1. When the playpen is used, the first folding assembly 21 and the second folding assembly 22 are configured to be fully unfolded, and the first folding assembly 21 is configured to be fixed relative to the second folding assembly 22 by the fastening mechanism to maintain the playpen in an unfolded state. When the playpen is needed to be stored, the fastening part 23 is configured to be detached from the fastening hole 216 to unfix the first folding assembly 21, in this way, the first folding assembly 21 and the second folding assembly 22 are configured to be folded, respectively, so as to fully gather the playpen. Therefore, the playpen of this application has advantages of convenient disassembly and assembly, easy folding, and short storage time, and can reduce the labor intensity of the operator.

In this embodiment, the folding frame has a rectangular structure, and the first support rod 1 is perpendicular to projection in a horizontal direction of the rectangular structure 2.

Referring to FIG. 7, the playpen further includes a plurality of first connecting parts 3. Each of the plurality of first connecting parts 3 is provided on a top end of the first support rod 1. Each of the plurality of first connecting parts 3 is provided with a first connecting groove 31 and a second connecting groove 32, and an axis of the first connecting groove 31 is perpendicular to an axis of the second connecting groove 32. For two first folding assemblies 21 of any adjacent two folding structures 2 among the plurality of folding structures 2, two ends of one of the two first folding assemblies 21 are rotatably connected with the first connecting groove 31 of one of adjacent two first connecting parts 3 among the plurality of first connecting parts 3 and the second connecting groove 32 of the other of the adjacent two first connecting parts 3, respectively; two ends of the other of the two first folding assemblies 21 are rotatably connected with the second connecting groove 32 of one of the adjacent two first connecting parts 3 and the first connecting groove 31 of the other of the adjacent two first connecting parts 3, respectively.

In an embodiment, the first connecting groove 31 is provided up-down through along a thickness direction of the first connecting part 3, and the second connecting groove 32 is through along the thickness direction of the first connecting part 3.

Referring to FIGS. 2 and 5, the first folding assembly 21 includes a first connecting rod 211, a second connecting part 212 and a second connecting rod 213. A top end of the second connecting part 212 is provided with a first accommodating groove 214 and a second accommodating groove 215 opposite to each other. The first accommodating groove 214 and the second accommodating groove 215 are both configured to open upward. A first end of the first connecting rod 211 is rotatably provided in the first accommodating groove 214, and a second end of the first connecting rod 211 is rotatably connected with the first connecting groove 31 of one of the adjacent two first connecting parts 3. A first end of the second connecting rod 213 is rotatably provided in the second accommodating groove 215, and a second end of the second connecting rod 213 is rotatably connected with the second connecting groove 32 of the other of the adjacent two first connecting parts 3. A side of the second connecting part 212 close to the second folding assembly 22 is provided with the fastening hole 216, and the fastening hole 216 is configured to hold the fastening part 23.

In an embodiment, the first end of the first connecting rod 211 is articulated with the first accommodating groove 214, and the second end of the first connecting rod 211 is articulated with the first connecting groove 31. When the playpen is needed to be folded, the first connecting rod 211 is configured to rotate clockwise in a vertical direction until the first connecting rod 211 rotates from the horizontal direction to the vertical direction. The first end of the second connecting rod 213 is articulated with the second accommodating groove 215, and the second end of the second connecting rod 213 is articulated with the second connecting groove 32, so that the second connecting rod 213 is configured to rotate counterclockwise until the second connecting rod 213 rotates from the horizontal direction to the vertical direction. The second connecting rod 213 is arranged in parallel and vertical to the first connecting rod 211. The first connecting rod 211 and the second connecting rod 213 are configured to rotate to drive the second connecting part 212 to move downward, so as to realize that an end of the first connecting rod 211 away from the second connecting rod 213 is close to an end of the second connecting rod 213 away from the first connecting rod 211, thereby completing folding of the first folding assembly 21.

In an embodiment, the fastening part 23 is configured to realize fixing of the first folding assembly 21 and the second folding assembly 22 to maintain a flat state of the first connecting rod 211 and the second connecting rod 213. The fastening part 23 is also configured to limit the first connecting rod 211 and the second connecting rod 213 to rotate clockwise or counterclockwise in the unfolded state, respectively, so as to maintain the flat state of the first connecting rod 211 and the second connecting rod 213.

Referring to FIGS. 2 and 8, the playpen further includes a plurality of third connecting parts 4. Each of the plurality of third connecting parts 4 is sleevedly provided outside the first support rod 1. Each of the plurality of third connecting parts 4 is provided with a first through hole 43. The through hole 43 is through along a thickness direction of each of the plurality of third connecting parts 4. The first support rod 1 is configured to penetrate the first through hole 43, so that each of the plurality of third connecting parts 4 is configured to be subject to axial reciprocation movement along the first support rod 1. Each of the plurality of third connecting parts 4 is respectively provided below the plurality of first connecting parts 3. Each of the plurality of third connecting part 4 is provided with a third connecting groove 41 and a fourth connecting groove 42. An axis of the third connecting groove 41 is parallel to the axis of the first connecting groove 31, and an axis of the fourth connecting groove 42 is parallel to the axis of the second connecting groove 32. For two second folding assemblies 22 of any adjacent two folding structures 2, two ends of one of the two second folding assemblies 22 are rotatably connected with the third connecting groove 41 of one of adjacent two third connecting parts 4 among the plurality of third connecting parts 4 and the fourth connecting groove 42 of the other of the adjacent two third connecting parts 4, respectively; and two ends of the other of the two second folding assemblies 22 are rotatably connected with the fourth connecting groove 42 of one of the adjacent two third connecting parts 4 and the third connecting groove 41 of the other of the adjacent two third connecting parts 4, respectively.

In an embodiment, the third connecting groove 41 is through along a central axis direction of the first through hole 43, and the fourth connecting groove 42 is through along the central axis direction of the first through hole 43.

Referring to FIGS. 2 and 6, the second folding assembly 22 includes a third connecting rod 221, a fourth connecting part 222 and a fourth connecting rod 223. A top end of the fourth connecting part 222 is provided with a third accommodating groove 224 and a fourth accommodating groove 225 parallel to each other. The third accommodating groove 224 and the fourth accommodating groove 225 are both configured to open downward. A first end of the third connecting rod 221 is rotatably provided in the third accommodating groove 224, and a second end of the third connecting rod 221 is rotatably connected with the third connecting groove 41 of one of the adjacent two third connecting parts 4. A first end of the fourth connecting rod 223 is rotatably provided in the fourth accommodating groove 225, and a second end of the fourth connecting rod 223 is rotatably connected the fourth connecting groove 42 of the other of the adjacent two third connecting parts 4. The fastening part 23 is provided on a side of the fourth connecting part 222 close to the second connecting part 212. And the fastening part 23 is configured to be engaged with the fastening hole 216, so as to realize snap fit between the first folding assembly 21 and the second folding assembly 22.

In an embodiment, the second connecting part 212 further includes two limiting parts 2121. One of the two limiting parts 2121 is arranged on an end of the first accommodating groove 214 away from the second accommodating groove 215, and is configured to limit the first connecting rod 211 to continue to rotate counterclockwise when it is flat, so as to maintain the first connecting rod 211 in the flat state. The other one of the two limiting parts 2121 is arranged on an end of the second accommodating groove 215 away from the first accommodating groove 214, and is configured to limit the second connecting rod 213 to continue to rotate clockwise when it is flat, so as to maintain the second connecting rod 213 in the flat state. Such arrangement prevents the second connecting part 212 from continuing to move up, so as to maintain the first folding assembly 21 in the unfolded state when the second connecting part 212 is in snap fit with the fourth connecting part 222.

In an embodiment, each of the two limiting parts 2121 is provided with a groove 2122 fitted to an outer side wall of one of the first connecting rod 211 and the second connecting rod 213.

In an embodiment, the fastening hole 216 includes a first clamping slot 2161 and a second clamping slot 2162. The first clamping slot 2161 is located below the second clamping slot 2162 communicated with each other. An opening of the second clamping slot 2162 is provided with a flange. The fastening part 23 includes an engaging portion 231 and a protruding portion 232. A first end of the protruding portion 232 is connected with the fourth connecting part 222, and the engaging portion 231 is provided on a second end of the protruding portion 232. An inner diameter of the first clamping slot 2161 is larger than an outer diameter of the engaging portion 231, and the outer diameter of the engaging portion 231 is larger than an inner diameter of the second clamping slot 2162. An outer diameter of the protruding portion 232 is smaller than an inner diameter of the second clamping slot 2162. The fastening part 23 is configured to move from the first clamping slot 2161 to the second clamping slot 2162 to allow the engaging portion 231 to be in snap fit with the flange. In an embodiment, the engaging portion 231 has a frustum structure or a column structure. The protruding portion 232 has a column structure. The first clamping slot 2161 and the second clamping slot 2162 are round. The flange is annularly provided along the opening of the second clamping slot 2162. In an embodiment, the fastening part 23 is made of plastic material.

In an embodiment, the third accommodating groove 224 is through along the thickness direction of the fourth connecting part 222, and the fourth accommodating groove 225 is through along the thickness direction of the fourth connecting part 222.

In an embodiment, the first end of the third connecting rod 221 is articulated with the third accommodating groove 224, and the second end of the third connecting rod 221 is articulated with the third connecting groove 41. The first end of the fourth connecting rod 223 is articulated with the fourth accommodating groove 225, and the second end of the fourth connecting rod 223 is articulated with the fourth connecting groove 42.

Referring to FIG. 2, the second folding assembly 22 further includes a second support rod 227. A bottom end of the fourth connecting part 222 is provided with a fifth accommodating groove, and a top end of the second support rod 227 is configured to be accommodated in the fifth accommodating groove. And the second support rod 227 is configured to support the first folding assembly 21.

In an embodiment, the second support rod 227 is configured to support the fourth connecting part 222 at a specified height. When the second connecting part 212 is connected and is in snap fit with the fourth connecting part 222 through the fastening part 23, the second support rod 227 is configured to maintain the second connecting part 212 at the specified height. The specified height is a height where the first folding assembly 21 maintains horizontal, so that the first connecting rod 211 and the second connecting rod 213 of the first folding assembly 21 maintain horizontal.

Referring to FIGS. 2 and 9, each of the plurality of folding structures 2 further includes a third folding assembly 24. Each of the plurality of first connecting parts 3 is provided with a fifth connecting groove 33 and a sixth connecting groove 34. An axis of the fifth connecting groove 33 is parallel to the axis of the first connecting groove 31, and an axis of the sixth connecting groove 34 is parallel to the axis of the second connecting groove 32. For two third folding assemblies 24 of the any adjacent two folding structures 2, two ends of one of the two third folding assemblies 24 are rotatably connected with the fifth connecting groove 33 of one of the adjacent two first connecting parts 3 and the sixth connecting groove 34 of the other of the adjacent two first connecting parts 3, respectively. And two ends of the other of two third folding assemblies 24 are rotatably connected with the sixth connecting groove 34 of one of the adjacent two first connecting parts 3 and the fifth connecting groove 33 of the other of the adjacent two first connecting parts 3, respectively.

In an embodiment, the fifth connecting groove 33 is through along the thickness direction of the first connecting part 3, and the sixth connecting groove 34 is through along the thickness direction of the first connecting part 3.

In an embodiment, the fifth connecting groove 33 and the sixth connecting groove 34 are both provided between the first connecting groove 31 and the second connecting groove 32.

Referring to FIGS. 2 and 9, the third folding assembly 24 includes a fifth connecting rod 241, a fifth connecting part 242 and a sixth connecting rod 243. The fifth connecting part 242 is sleevedly provided outside the second support rod 227. The fifth connecting part 242 is provided with a second through hole 2421, and the second through hole 2421 is through along a thickness direction of the fifth connecting part 242. The second support rod 227 is configured to penetrate the second through hole 2421, so that the fifth connecting part 242 is configured to be subject to axial reciprocation movement along the second support rod 227. The fifth connecting part 242 is located below the fourth connecting part 222. A top end of the fifth connecting part 242 is provided with a sixth accommodating groove 244 and a seventh accommodating groove 245 parallel to each other, and the sixth accommodating groove 244 and the seventh accommodating groove 245 are configured to open upward. A first end of the fifth connecting rod 241 is rotatably provided in the sixth accommodating groove 244, and a second end of the fifth connecting rod 241 is rotatably connected with the fifth connecting groove 33 of one of the adjacent two first connecting parts 3. A middle of the fifth connecting rod 241 is articulated with a middle of the third connecting rod 221. A first end of the sixth connecting rod 243 is rotatably provided in the seventh accommodating groove 245, and a second end of the sixth connecting rod 243 is rotatably connected with the sixth connecting groove 34 of the other of the adjacent two first connecting parts 3. A middle of the sixth connecting rod 243 is articulated with a middle of the fourth connecting rod 223.

In an embodiment, the sixth accommodating groove 244 is through along the thickness direction of the fifth connecting part 242, and the seventh accommodating groove 245 is through along the thickness direction of the fifth connecting part 242.

The first end of the fifth connecting rod 241 is articulated with the sixth accommodating groove 244, and the second end of the fifth connecting rod 241 is articulated with the fifth connecting groove 33. The first end of the sixth connecting rod 243 is articulated with the seventh accommodating groove 245, and the second end of the sixth connecting rod 243 is articulated with the sixth connecting groove 34. The middle of the fifth connecting rod 241 is articulated with the middle of the third connecting rod 221. The sixth connecting rod 243 is articulated with the fourth connecting rod 223. In this way, a cross-connected structure can enhance a structure stability, which is conducive to maintaining the playpen in the unfolded state.

In an embodiment, a length of the first connecting rod 211 is equal to a length of the second connecting rod 213, and a length of the third connecting rod 221 is equal to a length of the fourth connecting rod 223. The length of the third connecting rod 221 is larger than the length of the first connecting rod 211. A length of the fifth connecting rod 241 is equal to a length of the sixth connecting rod 243. The length of the fifth connecting rod 241 is larger than the length of the first connecting rod 211. When the first connecting rod 211 and the second connecting rod 213 are in a horizontal state, the third connecting rod 221 and the fifth connecting rod 241 are respectively tilted and crossed to form two triangles, and the fourth connecting rod 223 and the sixth connecting rod 243 are respectively tilted and crossed to form two triangles.

When the playpen is needed to be folded, the second folding assembly 22 and the third folding assembly 24 are configured to be gathered inward at the same time. During this process, the third connecting rod 221 is configured to rotate counterclockwise in the vertical direction and drives the third connecting part 4 to move downward along the first support rod 1. At the same time, the fifth connecting rod 241 is configured to rotate clockwise in the vertical direction and drives the fifth connecting part 242 to move downward along the second support rod 227. In this way, the first support rod 1 is configured to be gathered relative to the second support rod 227 through the third connecting rod 221 and the fifth connecting rod 241 connected to it.

At the same time, the fourth connecting rod 223 is configured to rotate clockwise in the vertical direction and drive the third connecting part 4 connected with the fourth connecting rod 223 to move downward along the first support rod 1. The sixth connecting rod 243 is configured to rotate counterclockwise in the vertical direction and drive the fifth connecting part 242 to move downward along the second support rod 227. In this way, the first support first support 1 is configured to be gathered relative to the second support rod 227 through the fourth connecting rod 223 and the sixth connecting rod 243 connected thereto. At the same time, an end of the third connecting rod 221 away from the fourth connecting rod 223 is close to an end of the fourth connecting rod 223 away from the third connecting rod 221, so as to complete folding of the second folding assembly 22. An end of the fifth connecting rod 241 away from the sixth connecting rod 243 is close to an end of the sixth connecting rod 243 away from the fifth connecting rod 241, so as to realize folding of the third folding assembly 24.

In an embodiment, an axis of the third accommodating groove 224 and an axis of the fourth accommodating groove 225 are parallel but not coincidental, and an axis of the sixth accommodating groove 244 and an axis of the seventh accommodating groove 245 are parallel but not coincidental. The third accommodating groove 224 is misaligned with the sixth accommodating groove 244, so as to form a space for articulation of the third connecting rod 221 and the fifth connecting rod 241. And the fourth accommodating groove 225 is misaligned with the seventh accommodating groove 245, so as to form a space for articulation of the fourth connecting rod 223 and the sixth connecting rod 243.

In this embodiment, the term “articulated” refers to a rotation axis penetrates the through holes between two components, so as to realize a rotation connection between the two components.

The playpen further includes a fabric. The fabric is sleevedly provided outside the first support rod 1, the first folding assembly 21, the second folding assembly 22 and the third folding assembly 24.

In an embodiment, referring to FIG. 10, this application further provides a plurality of support bases 5. Each of the plurality of support bases 5 is arranged on one of a bottom end of the first support rod 1 and a bottom end of the second support rod 227, respectively. A bottom end of each of the plurality of the support bases 5 is provided with a hole for placing a suction cup to maintain stability of the playpen of this application.

Described above are only preferred embodiments of this application, and are not intended to limit the scope of this application. Any equivalent replacements or direct/indirect application in other arts by utilizing the specification and accompanying drawings of this application shall fall within the scope of this application defined by the appended claims.

Claims

1. A playpen, comprising: a first support rod; anda folding frame;wherein the number of the first support rod is at least four; andthe folding frame has a polygon structure formed by end-to-end sequential connection of a plurality of folding structures; the first support rod is vertically arranged on the same side of the polygon structure; each of the plurality of folding structures comprises a first folding assembly, a second folding assembly and a fastening mechanism; the first folding assembly and the second folding assembly are rotatably connected to a top end of the first support rod; the fastening mechanism comprises a fastening part and a fastening hole; one of the fastening part and the fastening hole is provided on the first folding assembly, and the other of the fastening part and the fastening hole is provided on the second folding assembly; the fastening part is configured to be in snap fit with the fastening hole to limit folding of the plurality of folding structures, so as to maintain the playpen in an unfolded state; and the fastening part is also configured to be detached from the fastening hole to allow the plurality of folding structures to be folded.

2. The playpen of claim 1, further comprising: a plurality of first connecting parts;wherein each of the plurality of first connecting parts is provided on the top end of the first support rod; each of the plurality of first connecting parts is provided with a first connecting groove and a second connecting groove, and an axis of the first connecting groove is perpendicular to an axis of the second connecting groove; for two first folding assemblies of any adjacent two folding structures among the plurality of folding structures, two ends of one of the two first folding assemblies are rotatably connected with the first connecting groove of one of adjacent two first connecting parts among the plurality of first connecting parts and the second connecting groove of the other of the adjacent two first connecting parts, respectively; two ends of the other of the two first folding assemblies are rotatably connected with the second connecting groove of one of the adjacent two first connecting parts and the first connecting groove of the other of the adjacent two first connecting parts, respectively.

3. The playpen of claim 2, wherein the first folding assembly comprises a first connecting rod, a second connecting part and a second connecting rod; a top end of the second connecting part is provided with a first accommodating groove and a second accommodating groove opposite to each other; the first accommodating groove and the second accommodating groove are both configured to open upward; a first end of the first connecting rod is rotatably provided in the first accommodating groove, and a second end of the first connecting rod is rotatably connected with the first connecting groove of one of the adjacent two first connecting parts; a first end of the second connecting rod is rotatably provided in the second accommodating groove, and a second end of the second connecting rod is rotatably connected with the second connecting groove of the other of the adjacent two first connecting parts; a side of the second connecting part close to the second folding assembly is provided with the fastening hole, and the fastening hole is configured to hold the fastening part.

4. The playpen of claim 3, further comprising: a plurality of third connecting parts;wherein each of the plurality of third connecting parts is sleevedly provided outside the first support rod, and the plurality of third connecting parts are respectively provided below the plurality of first connecting parts; each of the plurality of third connecting parts is provided with a third connecting groove and a fourth connecting groove; an axis of the third connecting groove is parallel to the axis of the first connecting groove, and an axis of the fourth connecting groove is parallel to the axis of the second connecting groove; for two second folding assemblies of the any adjacent two folding structures, two ends of one of the two second folding assemblies are rotatably connected with the third connecting groove of one of adjacent two third connecting parts among the plurality of third connecting parts and the fourth connecting groove of the other of the adjacent two third connecting parts, respectively; and two ends of the other of the two second folding assemblies are rotatably connected with the fourth connecting groove of one of the adjacent two third connecting parts and the third connecting groove of the other of the adjacent two third connecting parts, respectively.

5. The playpen of claim 4, wherein the second folding assembly comprises a third connecting rod, a fourth connecting part and a fourth connecting rod; a top end of the fourth connecting part is provided with a third accommodating groove and a fourth accommodating groove parallel to each other; the third accommodating groove and the fourth accommodating groove are both configured to open downward; a first end of the third connecting rod is rotatably provided in the third accommodating groove, and a second end of the third connecting rod is rotatably connected with the third connecting groove of one of the adjacent two third connecting parts; a first end of the fourth connecting rod is rotatably provided in the fourth accommodating groove, and a second end of the fourth connecting rod is rotatably connected the fourth connecting groove of the other of the adjacent two third connecting parts; the fastening part is provided on a side of the fourth connecting part close to the second connecting part; and the fastening part is configured to be engaged with the fastening hole to realize snap fit between the first folding assembly and the second folding assembly.

6. The playpen of claim 5, wherein the second folding assembly further comprises a second support rod; a bottom end of the fourth connecting part is provided with a fifth accommodating groove, and a top end of the second support rod is configured to be accommodated in the fifth accommodating groove; and the second support rod is configured to support the first folding assembly.

7. The playpen of claim 6, wherein each of the plurality of folding structures further comprises a third folding assembly; each of the plurality of first connecting parts is further provided with a fifth connecting groove and a sixth connecting groove; an axis of the fifth connecting groove is parallel to the axis of the first connecting groove, and an axis of the sixth connecting groove is parallel to the axis of the second connecting groove; for two third folding assemblies of the any adjacent two folding structures, two ends of one of the two third folding assemblies are rotatably connected with the fifth connecting groove of one of the adjacent two first connecting parts and the sixth connecting groove of the other of the adjacent two first connecting parts, respectively; and two ends of the other of the two third folding assemblies are rotatably connected with the sixth connecting groove of one of the adjacent two first connecting parts and the fifth connecting groove of the other of the adjacent two first connecting parts, respectively.

8. The playpen of claim 7, wherein the third folding assembly comprises a fifth connecting rod, a fifth connecting part and a sixth connecting rod; the fifth connecting part is sleevedly provided outside the second support rod, and is located below the fourth connecting part; a top end of the fifth connecting part is provided with a sixth accommodating groove and a seventh accommodating groove parallel to each other, and the sixth accommodating groove and the seventh accommodating groove are configured to open upward; a first end of the fifth connecting rod is rotatably provided in the sixth accommodating groove, and a second end of the fifth connecting rod is rotatably connected with the fifth connecting groove of one of the adjacent two first connecting parts; a first end of the sixth connecting rod is rotatably provided in the seventh accommodating groove, and a second end of the sixth connecting rod is rotatably connected with the sixth connecting groove of the other of the adjacent two first connecting parts.

9. The playpen of claim 8, wherein the fifth connecting rod is articulated with the third connecting rod; and the sixth connecting rod is articulated with the fourth connecting rod.

10. The playpen of claim 1, wherein the fastening part comprises a protruding portion and an engaging portion; a first end of the protruding portion is connected with the second folding assembly, and the engaging portion is provided on a second end of the protruding portion; the fastening hole comprises a first clamping slot and a second clamping slot communicated with each other; an opening of the second clamping slot is provided with a flange; an inner diameter of the first clamping slot is larger than an outer diameter of the engaging portion, and the outer diameter of the engaging portion is larger than an inner diameter of the opening of the second clamping slot; an outer diameter of the protruding portion is smaller than an inner diameter of the second clamping slot; and the fastening part is configured to move from the first clamping slot to the second clamping slot to allow the engaging portion to be in snap fit with the flange, so as to achieve snap fit between the fastening part and the fastening hole.