Outdoor sheltering product, foldable tent, and sunshade

Abstract

An outdoor sheltering product, a foldable energy canopy and a sunshade umbrella are disclosed. The outdoor sheltering product includes a rod assembly, and the rod assembly includes a first rod having a hollow first inner cavity, and a first lining reinforcing member for reinforcing strength of the first rod. The lining reinforcing member is arranged in the inner cavity and located in a middle portion of the first rod.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS

[0001] This application is a national stage of PCT Application No. Number PCT / CN2023 / 126106, having a filing date of Oct. 24, 2023, which claims priority to Chinese Patent Application No. 202222807553.0 filed on Oct. 24, 2022, the entire contents of which are hereby incorporated by reference.FIELD OF TECHNOLOGY

[0002] The following relates to the field of outdoor articles, and relates to an outdoor sheltering product, and in particular, to a foldable canopy and a sunshade umbrella.BACKGROUND

[0003] A canopy is an outdoor sheltering product commonly used outdoors, and especially, a foldable canopy becomes increasingly popular with consumers. An existing foldable canopy includes a plurality of supporting legs as well as a top rod assembly and an eave assembly connected among the plural supporting legs, and each of the top rod assembly and the eave assembly includes a plurality of rotatably connected rod pieces. These rod pieces have a large aspect ratio, and are usually long, therefore high strength is required to avoid bending thereof. In embodiments, a connecting part of the rod piece is usually required to be provided with a connecting hole for inserting a connecting piece, such as a pivot, which is a primarily stress-bearing part of the rod piece and thus requires enough strength.SUMMARY

[0004] An aspect relates to an outdoor sheltering product which can enhance strength of a rod piece on the premise of avoiding an excessive increase in a weight of the rod piece.

[0005] A first aspect of the present disclosure provides an outdoor sheltering product, including a rod assembly, the rod assembly including:

[0006] a first rod having a hollow first inner cavity; and

[0007] a first lining reinforcing member for reinforcing strength of the first rod;

[0008] wherein the lining reinforcing member is arranged in the first inner cavity and located in a middle portion of the first rod.

[0009] Herein, the “middle portion” of the rod piece means any position between two end portions of the rod piece exclusively, for example anywhere from ⅕ to ⅘ of a length of the rod piece.

[0010] In embodiments, in the rod assembly, a component for reinforcing the strength of the first rod includes only the first lining reinforcing member.

[0011] In embodiments, the first lining reinforcing member includes a hollow lining tube or a lining bracket fitted with an inner wall of the first rod.

[0012] In embodiments, the hollow lining tube or the lining bracket abutting contacts and / or is fixedly connected with the inner wall of the first rod.

[0013] In embodiments, the first rod has a first connecting portion, the rod assembly further includes a second member connected to the first connecting portion, and the lining reinforcing member is located inside the first connecting portion.

[0014] In embodiments, the first connecting portion comprises a first connecting hole, a second connecting hole is arranged on the lining reinforcing member, the first connecting hole and the second connecting hole are aligned and communicated, a connecting pin is arranged on or connected with the second member, and the connecting pin is inserted into the first connecting hole and the second connecting hole.

[0015] In embodiments, the rod assembly has an unfolded state and a folded state, and the first rod and the second member are pivotally connected by the connecting pin.

[0016] In embodiments, the second member comprises a second rod having a second connecting portion, the second connecting portion is connected with the first connecting portion of the first rod, a hollow second inner cavity is arranged in the second rod, a second lining reinforcing member is arranged in the second inner cavity of the second rod, and the second lining reinforcing member is located inside the second connecting portion.

[0017] In embodiments, in the rod assembly, a component for reinforcing the strength of the second rod includes only the second lining reinforcing member.

[0018] In embodiments, the second lining reinforcing member includes a hollow lining tube or a lining bracket connected or in contact with an inner wall of the second rod.

[0019] In embodiments, the second connecting portion includes a third connecting hole, a second connecting hole is arranged in the second lining reinforcing member in the second rod, the first connecting hole, each second connecting hole, and the third connecting hole are aligned, and the connecting pin is inserted into the first connecting hole, each second connecting hole, and the third connecting hole.

[0020] In embodiments, a size of the second lining reinforcing member in a length direction of the second rod is less than 20% of a length of the second rod, and the second lining reinforcing member is arranged in a region from ⅕ to ⅘ of the length of the second rod.

[0021] In embodiments, the second connecting portion is located in a middle portion of the second rod.

[0022] In embodiments, a size of the lining reinforcing member in a length direction of the first rod is less than 20% of a length of the first rod.

[0023] In embodiments, the first lining reinforcing member is a hollow plastic or metal tube.

[0024] In embodiments, the outdoor sheltering product is a canopy.

[0025] In embodiments, the canopy includes a foldable canopy frame, the canopy frame includes a plurality of supporting legs, a plurality of eave frames and a top frame, each eave frame is connected between two adjacent supporting legs, the top frame is connected to the plurality of supporting legs, and each eave frame and / or the top frame includes one or more of the rod assemblies.

[0026] In embodiments, the outdoor sheltering product is a sunshade umbrella.

[0027] In embodiments, a rib of the sunshade umbrella includes one or more of the rod assemblies.

[0028] A further aspect of the present disclosure provides a foldable canopy, including a foldable canopy frame, the canopy frame including:

[0029] a plurality of supporting legs;

[0030] a plurality of eave frames, each eave frame being connected between two adjacent supporting legs of the plurality of supporting legs; and

[0031] a top frame connected to upper end portions of the plurality of supporting legs;

[0032] wherein at least one of the plurality of eave frames and / or the top frame comprises a rod assembly, the rod assembly comprising:

[0033] a first rod having a hollow first inner cavity; and

[0034] a first lining reinforcing member for reinforcing strength of the first rod;

[0035] wherein, the lining reinforcing member is arranged in the first inner cavity and located in a middle portion of the first rod.

[0036] In embodiments, the rod assembly further comprises a second rod, the second rod has a second connecting portion, the second connecting portion is connected with the first connecting portion of the first rod, a hollow second inner cavity is arranged in the second rod, a second lining reinforcing member is arranged in the second inner cavity of the second rod, and the second lining reinforcing member is located inside the second connecting portion.

[0037] In embodiments, the first rod, the first lining reinforcing member, the second rod, and the second lining reinforcing member are rotatably connected by a pivot, such that the rod assembly has an unfolded state and a folded state; the rod assembly is in the unfolded state after the canopy is unfolded, and the rod assembly is in the folded state after the canopy is folded.

[0038] Yet another aspect of the present disclosure provides a sunshade umbrella, including a bracket and a sunshade cloth covering the bracket, the bracket including one or more rod assemblies, the rod assembly including:

[0039] a first rod having a hollow first inner cavity and being a rib or a part of the rib of the bracket; and

[0040] a first lining reinforcing member for reinforcing strength of the first rod;

[0041] wherein the lining reinforcing member is arranged in the first inner cavity and located in a middle portion of the first rod;

[0042] the bracket further includes a supporting rod extending in an up-down direction, the rib has an inner end portion and an outer end portion, and the inner end portion of the rib is pivotally connected to an upper end portion of the supporting rod.

[0043] In embodiments, the rod assembly further comprises a second rod, the second rod is an inclined rod or a part of an inclined rod of the bracket, the inclined rod has an inner end portion, the inner end portion of the inclined rod is connected to the supporting rod in a mode of being capable of rotating and sliding in the up-down direction, an outer end portion of the second rod is pivotally connected to a first connecting portion of the first rod, a hollow second inner cavity is arranged in the second rod, a second lining reinforcing member is arranged in the second inner cavity of the second rod, and the second lining reinforcing member is located inside the second connecting portion.

[0044] The present disclosure has the following advantages: in the rod assembly of the outdoor sheltering product according to the present disclosure, the lining reinforcing member is inserted into the connecting portion of the rod to reinforce the strength of the rod, and particularly, the strength of the middle and other weak parts of the rod is reinforced (for example, middle portions of long rods, such as an eave rod and a top rod of the canopy, or the rib of the sunshade umbrella, are reinforced), such that the rod piece is effectively prevented from being bent, and meanwhile, a weight of the rod assembly is not excessively increased; therefore, the outdoor sheltering product, such as the canopy or the sunshade umbrella, can have high strength without excessively increasing a total weight of the canopy or the sunshade umbrella.BRIEF DESCRIPTION

[0045] Some of the embodiments will be described in detail, with references to the following Figures, wherein like designations denote like members, wherein:

[0046] FIG. 1 shows an example of a canopy according to an embodiment of the present disclosure;

[0047] FIG. 2 is a partial enlarged view of part I in FIG. 1;

[0048] FIG. 3 is a side view of a first rod of the canopy according to the embodiment of the present disclosure;

[0049] FIG. 4 is a schematic partial diagram of the first rod of the canopy according to the embodiment of the present disclosure;

[0050] FIG. 5 shows an example of a sunshade umbrella according to an embodiment of the present disclosure;

[0051] FIG. 6 is a perspective view of a bracket of the sunshade umbrella shown in FIG. 5; and

[0052] FIG. 7 is a front view of the bracket of the sunshade umbrella shown in FIG. 5.

[0053] In the Drawings:

[0054] 1—canopy frame; 11—supporting leg; 12—eave frame; 13—top frame;

[0055] 2—rod assembly; 21—first rod; 210—first connecting hole; 22—second rod; 220—third connecting hole; 23—lining reinforcing member; 230—second connecting hole; 24—connecting pin;

[0056] 100—bracket; 101—supporting rod; 1011—sliding sleeve; 102—rib; 103—inclined rod; 104—sunshade cloth.DETAILED DESCRIPTION

[0057] Embodiments of the present disclosure are described in detail below with reference to the accompanying drawings, such that the advantages and features of the present disclosure can be more readily understood by those skilled in the conventional art. It should be noted here that the description of these embodiments is intended to assist in understanding of the present disclosure, but does not constitute a limitation of the present disclosure. Furthermore, the technical features involved in the embodiments of the present disclosure described below may be combined with each other as long as they do not conflict with each other.

[0058] The embodiment provides a rod assembly of an outdoor sheltering product, in particular a folding rod assembly of a foldable outdoor sheltering article. The foldable outdoor sheltering article may be a foldable canopy or sunshade umbrella having one or more of the rod assemblies. The rod assembly has an unfolded state and a folded state; when the foldable outdoor sheltering article is unfolded, the rod assembly is in the unfolded state; when the foldable outdoor sheltering article is folded, the rod assembly is in the folded state.

[0059] FIG. 1 shows an example of an outdoor sheltering product according to the present embodiment, in particular a foldable canopy. Referring to FIG. 1, the foldable canopy includes a foldable canopy frame 1, the canopy frame 1 includes a plurality of supporting legs 11, a plurality of eave frames 12 and a top frame 13, each eave frame 12 is connected between two adjacent supporting legs 11, the top frame 13 is connected to upper end portions of the plurality of supporting legs 11, and each eave frame 12 and / or the top frame 13 includes one or more rod assemblies 2. Specifically, in the canopy frame 1 shown in FIG. 1, each eave frame 12 includes three rod assemblies 2 rotatably connected in sequence. In some other examples, one or more rod assemblies 2 may also be adopted in the top frame 13.

[0060] As shown in FIG. 2, each rod assembly 2 includes a first rod 21, the first rod 21 has a first connecting portion, and the first connecting portion is connected with a second member of the outdoor sheltering product. The second member is specifically a second rod 22 with a second connecting portion. Further, a middle portion of the first rod 21 and a middle portion of the second rod 22 are rotatably connected, such that the first connecting portion is located in the middle portion of the first rod 21, and the second connecting portion is located in the middle portion of the second rod 22. Herein, the “middle portion” of a rod piece means any position between two end portions of the rod piece exclusively, for example anywhere from ⅕ to ⅘ of a length of the rod piece.

[0061] The rod assembly 2 further includes one or more lining reinforcing members 23 for reinforcing structural strength of the rod piece, the first rod 21 is provided with a hollow inner cavity, one lining reinforcing member 23 is provided in the inner cavity of the first rod 21, and the lining reinforcing member 23 is located on an inner side of the first connecting portion; the second rod 22 is provided with a hollow inner cavity, another lining reinforcing member 23 is provided in the inner cavity of the second rod 22, and the lining reinforcing member 23 is located on an inner side of the second connecting portion. That is, the lining reinforcing members 23 are located in the middle portions of the first rod 21 and the second rod 22. It should also be noted that a component for reinforcing the structural strength of the first rod 21 only includes the lining reinforcing member 23, a component for reinforcing the structural strength of the second rod 22 only includes the lining reinforcing member 23, and no additional reinforcing structure is provided.

[0062] The structure of the rod assembly 2 will be described in detail below with the first rod 21 as an example. FIG. 3 shows a side view of the first rod 21, FIG. 4 shows an isometric view of the first rod 21, and part of the first connecting portion is not shown in FIG. 4, so as to reveal the lining reinforcing member 23 in the first rod 21. As shown in FIG. 3 and FIG. 4, the lining reinforcing member 23 is a hollow lining tube plugged in the first rod 21; further, a shape of the lining tube is fitted with that of the first rod 21, sections of the lining tube and the first rod perpendicular to a length direction of the first rod 21 are in a circular or elliptic closed ring shape, and the lining tube is attached to and in contact with an inner wall of the first rod 21. In some other examples, the lining reinforcing member 23 is a lining bracket, such as a crossed bracket formed by crossing two sets of lining strips, which is closely fitted, for example, fixedly connected or in abutting contact, with the inner wall of the first rod 21.

[0063] Specifically, the first connecting portion includes a first connecting hole 210 formed through a tube wall of the first rod 21, a second connecting hole 230 is formed through the lining reinforcing member 23, and the first connecting hole 210 and the second connecting hole 230 are aligned and communicated with each other. The second rod 22 has a connecting pin 24 or is connected with a connecting pin 24, and the connecting pin 24 is inserted into the first connecting hole 210 and the second connecting hole 230. Further, the connecting pin 24 serves as a pivot, and the first rod 21 and the second rod 22 are pivotally connected by the connecting pin 24, such that the first rod 21 and the second rod 22 are connected in a mode of being capable of relatively rotating around the connecting pin 24, thereby allowing the rod assembly 2 to have the unfolded state and the folded state. After the canopy frame 1 is unfolded, the rod assembly 2 is in the unfolded state, and the first rod 21 and the second rod 22 are unfolded with respect to each other; after the canopy frame 1 is folded, the rod assembly 2 is in the folded state, and the first rod 21 and the second rod 22 get close to each other; that is, one end portion of the first rod 21 and one end portion of the second rod 22 get close to each other, and the other end portion of the first rod 21 and the other end portion of the second rod 22 get close to each other.

[0064] Correspondingly, the second connecting portion of the second rod 22 includes a third connecting hole 220 formed through a tube wall of the second rod 22, and a hollow lining tube is also plugged into the middle portion of the second rod 22. A shape of the lining tube is fitted with that of the second rod 22, sections of the lining tube and the second rod perpendicular to a length direction of the second rod 22 are in a circular or elliptic closed ring shape, and the lining tube is attached to and in contact with an inner wall of the second rod 22. The second connecting portion includes the third connecting hole 220 formed through the tube wall of the second rod 22, and the second connecting hole 230 is also formed through the lining reinforcing member 23. The first connecting hole 210, the second connecting holes 230, and the third connecting hole 220 are aligned and communicated with each other, and the connecting pin 24 is inserted into the connecting holes to pivotally connect the first rod 21 and the second rod 22.

[0065] A size of the lining reinforcing member 23 in the first rod 21 in the length direction of the first rod 21 is less than 20% of a length of the first rod 21. A size of the lining reinforcing member 23 in the second rod 22 in the length direction of the second rod 22 is less than 20% of a length of the second rod 22. The lining reinforcing member 23 is a hollow plastic or metal tube.

[0066] In the present embodiment, the first rod 21 and the second rod 22 are used as eaves rods of the eave frame 12 of the canopy respectively. In embodiments, the first rod 21 and the second rod 22 may also be used as rod pieces of the top frame 13 of the canopy; or, the first rod 21 is used as the eave rod of the canopy, and the second rod 22 is used as the supporting leg 11 of the canopy; or the first rod 21 is used as the rod piece of the top frame 13 of the canopy and the second rod 22 is used as the supporting leg 11 of the canopy.

[0067] Another example of the outdoor sheltering product according to the present embodiment is a sunshade umbrella having one or more of the rod assemblies 2.

[0068] Specifically, referring to FIG. 5 to FIG. 7, the sunshade umbrella includes a bracket 100 and a sunshade cloth 104 covering an upper portion of the bracket 100. The bracket 100 includes a supporting rod 101, a plurality of ribs 102, and a plurality of inclined rods 103. The supporting rod 101 extends in an up-down direction; the rib 102 has an inner end portion and an outer end portion, the inner end portion of the rib 102 is pivotally connected to an upper end portion of the supporting rod 101, and the outer end portion extends radially outwards with the upper end portion of the supporting rod 101 as a circle center; the inclined rod 103 has an inner end portion and an outer end portion, the inner end portion of the inclined rod 103 is pivotally connected to a sliding sleeve 1011, and the sliding sleeve 1011 is fitted over the supporting rod 101 in a mode of being capable of sliding in the up-down direction. The outer end portion of each inclined rod 103 is pivotally connected to a middle of the corresponding rib 102, and the sliding sleeve 1011 slides up and down to unfold or fold the bracket 100.

[0069] Each rib 102 and each inclined rod 103 constitute one of the rod assemblies 2 described above; that is, the first rod of the rod assembly acts as the rib 102 and the second rod acts as the inclined rod 103. One end portion of the second rod is rotatably connected to the middle portion of the first rod, such that the lining reinforcing member is inserted in the middle portion of the rib 102, and the outer end portion of the inclined rod 103 is pivotally connected to the middle portion of the rib 102 and the lining reinforcing member therein.

[0070] In the rod assembly of the present embodiment, the lining reinforcing member is inserted into the connecting portion of the rod to reinforce the strength of the rod, and particularly, the strength of the connecting portion and other weak parts is reinforced, and meanwhile, a weight of the rod assembly is not excessively increased; therefore, the outdoor sheltering product, such as the canopy or the sunshade umbrella, can have high strength without excessively increasing a total weight of the canopy or the sunshade umbrella.

[0071] As used in the specification and the appended claims, the terms “includes” and “comprises” only suggest the inclusion of the explicitly recited steps and elements, these steps and elements do not constitute an exclusive list, and embodiments of the method or device may include other steps or elements. The term “and / or” used herein includes any combination of one or more related listed items.

[0072] The indefinite articles “a” and “an” preceding an element or component herein are intended to describe without limitation the number of instances (i.e., occurrences) of the element or component, unless the context clearly indicates. Therefore, “a” and “an” are to be understood as including one or at least one, and the singular form of the element or component also includes the plural form.

[0073] It should be noted that, unless otherwise specified, when a feature is referred to as being “fixed” or “connected” to another feature, it can be directly or indirectly fixed or connected to the other feature. Furthermore, the descriptions “upper”, “lower”, “left”, “right”, or the like, used in embodiments of the present invention are only given with respect to the positional relationship of the components of embodiments of the present invention in the drawings.

[0074] It will be further understood that the terms “first”, “second”, or the like, are used to describe various information, but the information should not be limited by these terms. These terms are only used to distinguish information of the same type, and do not indicate a particular order or degree of importance. Indeed, the expressions “first”, “second”, or the like, are used interchangeably throughout. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the present disclosure.

[0075] Although the present invention has been disclosed in the form of embodiments and variations thereon, it will be understood that numerous additional modifications and variations could be made thereto without departing from the scope of the invention.

[0076] For the sake of clarity, it is to be understood that the use of ‘a’ or ‘an’ throughout this application does not exclude a plurality, and ‘comprising’ does not exclude other steps or elements.

Claims

1. An outdoor sheltering product, comprising a rod assembly, the rod assembly comprising:a first rod having a hollow first inner cavity; anda first lining reinforcing member for reinforcing a strength of the first rod;wherein the first lining reinforcing member is arranged in the hollow first inner cavity and located in a middle portion of the first rod.

2. The outdoor sheltering product of claim 1, wherein a component for reinforcing the strength of the first rod in the rod assembly comprises only the first lining reinforcing member.

3. The outdoor sheltering product of claim 1, wherein the first lining reinforcing member comprises a hollow lining tube or a lining bracket fitted with an inner wall of the first rod.

4. The outdoor sheltering product of claim 3, wherein the hollow lining tube or the lining bracket abutting contacts and / or is fixedly connected with the inner wall of the first rod.

5. The outdoor sheltering product of claim 1, wherein the first rod has a first connecting portion, the rod assembly further comprises a second member connected to the first connecting portion, and the first lining reinforcing member is located inside the first connecting portion.

6. The outdoor sheltering product of claim 5, wherein the first connecting portion comprises a first connecting hole, a second connecting hole is arranged on the first lining reinforcing member, the first connecting hole and the second connecting hole are aligned and communicated, a connecting pin is arranged on or connected with the second member, and the connecting pin is inserted into the first connecting hole and the second connecting hole.

7. The outdoor sheltering product of claim 6, wherein the rod assembly has an unfolded state and a folded state, and the first rod and the second member are pivotally connected by the connecting pin.

8. The outdoor sheltering product of claim 7, wherein the second member comprises a second rod having a second connecting portion, the second connecting portion is connected with the first connecting portion of the first rod, a hollow second inner cavity is arranged in the second rod, a second lining reinforcing member is arranged in the second inner cavity of the second rod, and the second lining reinforcing member is located inside the second connecting portion.

9. The outdoor sheltering product of claim 8, wherein a component for reinforcing strength of the second rod in the rod assembly comprises only the second lining reinforcing member.

10. The outdoor sheltering product of claim 8, wherein the second lining reinforcing member comprises a hollow lining tube or a lining bracket connected or in contact with an inner wall of the second rod.

11. The outdoor sheltering product of claim 8, wherein the second connecting portion comprises a third connecting hole, a second connecting hole is arranged in the second lining reinforcing member in the second rod, the first connecting hole, each second connecting hole, and the third connecting hole are aligned, and the connecting pin is inserted into the first connecting hole, each second connecting hole, and the third connecting hole.

12. The outdoor sheltering product of claim 8, wherein a size of the second lining reinforcing member in a length direction of the second rod is less than 20% of a length of the second rod, and the second lining reinforcing member is arranged in a region from ⅕ to ⅘ of the length of the second rod.

13. The outdoor sheltering product of claim 1, wherein a size of the first lining reinforcing member in a length direction of the first rod is less than 20% of a length of the first rod, and the first lining reinforcing member is arranged in a region from ⅕ to ⅘ of the length of the first rod.

14. The outdoor sheltering product of claim 1, wherein the first lining reinforcing member is a hollow plastic or metal tube.

15. The outdoor sheltering product of claim 1, wherein the outdoor sheltering product includes a canopy or a sunshade umbrella.

16. A foldable canopy, comprising a foldable canopy frame, the canopy frame comprising:a plurality of supporting legs;a plurality of eave frames, each eave frame being connected between two adjacent supporting legs of the plurality of supporting legs; anda top frame connected to upper end portions of the plurality of supporting legs;wherein at least one of the plurality of eave frames and / or the top frame comprises a rod assembly, the rod assembly comprising:a first rod having a hollow first inner cavity; anda first lining reinforcing member for reinforcing a strength of the first rod;wherein the first lining reinforcing member is arranged in the hollow first inner cavity and located in a middle portion of the first rod.

17. The canopy of claim 16, wherein the rod assembly further comprises a second rod, the second rod has a second connecting portion, the second connecting portion is connected with the first connecting portion of the first rod, a hollow second inner cavity is arranged in the second rod, a second lining reinforcing member is arranged in the second inner cavity of the second rod, and the second lining reinforcing member is located inside the second connecting portion.

18. The canopy of claim 17, wherein the first lining reinforcing member, the second rod, and the second lining reinforcing member are rotatably connected by a pivot, such that the rod assembly has an unfolded state and a folded state; the rod assembly is in the unfolded state after the canopy is unfolded, and the rod assembly is in the folded state after the canopy is folded.

19. A sunshade umbrella, comprising a bracket and a sunshade cloth covering the bracket, the bracket comprising one or more rod assemblies, the rod assembly comprising:a first rod having a hollow first inner cavity and being a rib or a part of the rib of the bracket; anda first lining reinforcing member for reinforcing a strength of the first rod;wherein the first lining reinforcing member is arranged in the hollow first inner cavity and located in a middle portion of the first rod;the bracket further comprises a supporting rod extending in an up-down direction, the rib has an inner end portion and an outer end portion, and the inner end portion of the rib is pivotally connected to an upper end portion of the supporting rod.

20. The sunshade umbrella of claim 19, wherein the rod assembly further comprises a second rod, the second rod is an inclined rod or a part of an inclined rod of the bracket, the inclined rod has an inner end portion, the inner end portion of the inclined rod is connected to the supporting rod in a mode of being capable of rotating and sliding in the up-down direction, an outer end portion of the second rod is pivotally connected to a first connecting portion of the first rod.

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