Christmas tree stand and assembled support assembly

Abstract

A stand for a Christmas tree and a support assembly thereof are disclosed. The support assembly comprises at least three leg members 11,12,13,14, each having an outer and inner end. An assembly portion is provided at the inner end of each limb 11,12,13,14 having means for limiting the rotation between them and means for limiting the upper and lower vertical movement between them. The vertical limiting means utilises an interference, or snap-fitted, connection. A connector fixed to the support assembly for bearing a Christmas tree is also provided. The rotational limiting means may comprise a clamping convex on an upper or lower surface of one leg member that mates with a clamping concave on the opposite surface of an adjacent leg. A stand comprising a support assembly formed of crossing members joined at their middle is also disclosed. The disclosed stand offers greater stability, reduces packing and transportation volume and can be adapted to real and artificial trees by using different connectors.

Description

TECHNICAL FIELD The disclosure relates to the field of festival decoration supplies, and specifically relates to a Christmas tree stand for use in Christmas decoration and an assembled support assembly that can be used to support load-bearing components such as the Christmas tree stand. BACKGROUND Christmas is a traditional festival, and using Christmas trees for festival decoration during Christmas is a traditional custom. Christmas trees are divided into two main categories, namely real trees and artificial trees, the real trees are trees of the Abies of Pinaceae, and the artificial trees are made by means of artificial synthesis, and both the real trees and the artificial trees need to be fixed by Christmas tree stands. A traditional Christmas tree stand has a bottom surface either in a planar structure or in a multi-fulcrum structure. The Christmas tree stand having a planar bottom surface has a large contact area with the ground and is relatively stable, but is liable to shake when the ground is poorly flat. A Christmas tree stand with a fulcrum-like bottom surface structure has three or more fulcrums to make contact with the ground, has better compatibility with uneven ground with respect to the tree stand with a planar bottom surface, and can be stably placed on the ground by adjusting position and angle, but is inconvenient to place, and a vacant center of the bottom surface thereof results in increased structural strength requirement for each leg. SUMMARY It is an object of the disclosure to provide a Christmas tree stand with stable force bearing and smooth placement, and an assembled support assembly that can be used to support loadbearing components such as the Christmas tree stand. As a first aspect of the disclosure, provided is a Christmas tree stand which comprises a tree stand support assembly and a connector for bearing a Christmas tree. The tree stand support assembly includes at least three tree stand members, each tree stand member has a tree stand member outer end at an outer end thereof and a tree stand member inner end at an inner end thereof, and the tree stand members are assembled with each other at-an the tree stand inner ends to form the tree stand support assembly; the connector is fixed to the tree stand support assembly for bearing a Christmas tree; where an assembly portion is provided at the tree stand member inner end of each of the tree stand members, a clamping convex and a clamping concave are respectively provided-en at a lower surface of the assembly portion of one of the tree stand members and at an upper surface of the assembly portion of an adjacent tree stand member, the clamping convex is arranged in a convex manner, and the clamping concave is arranged in a concave manner, and after assembly, the clamping convex is snapped into the clamping concave to limit relative rotation between the two adjacent tree stand members; the clamping convex and the clamping concave are assembled in an interference fit manner to realize assembly and shaping of each of the tree stand members; or a clamping portion is formed on an outer side of the assembly portion of one of the tree stand members, first snap connection portions are provided on the clamping portion, and second snap connection portions are provided on the remaining tree stand members, and the first snap connection portions and the second snap connection portions are in interference fit or snap-fitted with each other to realize the assembly and shaping of each of the tree stand members; and a first through hole is provided on the assembly portion of each of the tree stand members, and a fastener passes through the first through hole of each of the tree stand members in turn and is fixedly connected with the connector. The clamping convex is snapped into the clamping concave for rotation limiting, and the first snap connection portion and the second snap connection portion are in interference fit or snap fit with each other for limiting, so that the tree stand members can be self-shaped after assembly without using other tools or adhesives, thereby facilitating assembly of the Christmas tree stand; at the same time, the split type tree stand members also facilitate packaging and transportation after disassembly, which is beneficial to reducing length and volume of the package. Preferably, the Christmas tree stand also has a second support portion formed at an intersection point and a first support portion located at the tree stand member outer end of the tree stand member; in an initial condition that the Christmas tree is not borne, the second support portion is suspended without bearing any force, and only the first support portion bears a force. After the Christmas tree is placed, the tree stand support assembly is deformed so that the second support portion is in contact with a support surface, and since it is located near directly below the Christmas tree, a Christmas tree, major weight of the Christmas tree is borne by the second support portion, the first support portion mainly serves as an auxiliary stabilizing role and a minor loadbearing role. The above-mentioned deformation of the tree stand support assembly is caused by two reasons, one is that the tree stand members fit with each other at the assembly portions, so that there is an assembly gap between each other, and when bearing a vertical acting force, the deformation will be relatively obvious; the second is from a shape and material of each tree stand members; since an inner end of each tree stand member is only slightly concave relative to an outer end thereof, and a vertical distance thereof is 0.2-2 cm, a small weight can deform the tree stand support assembly and cause the second support portion to bear the force. As a second aspect of the disclosure, there is also provided an assembled support assembly for use in the Christmas tree stand or similar load-bearing components as described above to play a supporting role. Here, the similar load-bearing components may be other living facilities such as flowerpots. Here, the assembled support assembly includes at least three tree stand members, each of the tree stand members has a tree stand member outer end at an outer end thereof and a tree stand member inner end at an inner end thereof, and the tree stand members are assembled with each other at the tree stand member inner ends to form the assembled support assembly. Here, an assembly portion is provided at an tree stand member inner end of each of tree stand members, a clamping convex and a clamping concave are respectively provided at a lower surface of the assembly portion of one of the tree stand members and at an upper surface of the assembly portion of an adjacent tree stand member, the clamping convex is arranged in a convex manner, and the clamping concave is arranged in a concave manner, and after assembly, the clamping convex is snapped into the clamping concave to limit relative rotation between the two adjacent tree stand members; the clamping convex and the clamping concave are assembled in an interference fit manner to realize assembly and shaping of each of the tree stand members; or a clamping portion is formed on an outer side of the assembly portion of one of the tree stand members, first snap connection portions are provided on the clamping portion, and second snap connection portions are provided on the remaining tree stand members, and the first snap connection portions and the second snap connection portions are in interference fit or snap-fitted with each other to realize the assembly and shaping of each of the tree stand members; and a first through hole is provided on the assembly portion of each of the tree stand members, and a fastener passes through the first through hole of each of the tree stand members in turn. The Christmas tree stand and the assembled support assemblies of the disclosure have the following beneficial effects: 1. The Christmas tree stand comprises a second support portion located below the connector and used for bearing the Christmas tree, and a first support portion located outside the second support portion, the first support portion is in contact with the support surface to bear the force without external force, and the second support portion is suspended without bearing any force; and after the Christmas tree is fixed in the tree stand, the second support portion is deformed to be displaced downwards to get contact with the support surface to bear most of the weight of the Christmas tree, and the first support portion plays a stabilizing role and bears a small weight. 2. The Christmas tree stand having the above-mentioned structure are more stable in fixing the Christmas tree than two existing tree stands in which the second support portion always does not bear the acting force, and in which both the second support portion and the first support portion always bear the acting force. 3. The deformation of the second support portion of the Christmas tree stand is mainly provided by relative deformation between the assembly portions at the tree stand member inner ends formed by the assembly; on the basis of the same material and size, the Christmas tree stand has a greater deformation amplitude, so that the material and structural requirements can be reduced, and the role of the Christmas tree stand can be better played. 4. The tree stand support assembly of the Christmas tree stand is formed by assembly, which can reduce the packaging and transportation volume and reduce the cost. Moreover, the Christmas tree stand can be conveniently assembled, and the structure is firm after assembly. 5. The tree stand support assembly can be adapted to real trees and artificial trees by using different connectors, which can improve the versatility of parts and enrich the diversity of products. 6. The tree stand support assembly can also be shaped after self-assembly to form a pre-assembly with preliminary self-retention, and can be easily taken, moved and assembled during subsequent assembly, resulting in convenient operation. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic structural view of a.....cross Christmas tree stand according to Embodiment 1 of the disclosure; FIG. 2 is a structural exploded view of the embodiment of FIG. 1; FIG. 3 is a schematic structural view of a tree stand support assembly in the embodiment of FIG. 1; FIG. 4 is a front view of FIG. 3; FIG. 5 is a sectional view of FIG. 4; FIG. 6 is a partially schematic enlarged view of A in FIG. 5; FIG. 7 is a partially schematic enlarged view of B in FIG. 5; FIG. 8 is a structural exploded view of FIG. 3; FIG. 9 is a schematic structural top view of a first tree stand member in FIG. 3 and a partially schematic enlarged view thereof; FIG. 10 is a schematic structural bottom view of FIG. 9 and a partially schematic enlarged view thereof; FIG. 11 is a schematic structural top view of a second tree stand member in FIG. 3 and a partially schematic enlarged view; FIG. 12 is a schematic structural bottom view of FIG. 11 and a partially schematic enlarged view thereof; FIG. 13 is a schematic structural top view of a third tree stand member in FIG. 3 and a partially schematic enlarged view thereof; FIG. 14 is a schematic structural bottom view of FIG. 13 and a partially schematic enlarged view thereof; FIG. 15 is a schematic structural top view of a fourth tree stand member in FIG. 3 and a partially schematic enlarged view thereof; FIG. 16 is a sectional view of fit between the fourth tree stand member and a fastener in the embodiment of FIG. 1; FIG. 17 is a schematic structural view of a connector in the embodiment of FIG. 1 and a partially schematic enlarged view thereof; FIG. 18 is a schematic structural view of a Christmas tree stand according to Embodiment 2 of the disclosure, to which moving wheels added with respect to Embodiment 1; FIG. 19 is a schematic structural view of a Christmas tree stand according to Embodiment 3 of the disclosure; and FIG. 20 is a structural exploded view of FIG. 19. Reference numerals in the drawings, 100. tree stand support assembly, 200. connector, 10. tree stand member, 11. first tree stand member, 12. second tree stand member, 13. third tree stand member, 14. fourth tree stand member, 15. fastener, 110. first support portion, 109. second support portion, 101. tree stand member outer end, 102. tree stand member middle section, 103. tree stand member inner end, 104. first through hole, 105. clamping convex, 106. clamping concave, 107. moving wheel, 108. second snap connection portion, 111. first assembly portion, 121. second assembly portion, 131. third assembly portion, 141. fourth assembly portion, 142. clamping portion, 143. first snap connection portion, 112. nut concave position, 113. nut cavity, 114. secondary cavity, 201. first bearing cylinder, 202. bearing cavity, 203. second nut, 204. adjusting member, 205. first nut, 206. welding portion, 210. second bearing cylinder, and 211. covering member. DESCRIPTION OF THE EMBODIMENTS A........cross Christmas tree stand comprises a tree stand support assembly 100, the tree stand support assembly 100 comprises at least two support members, the support members cross each other at a middle portion to form the tree stand support assembly 100. A second support portion 109 is formed at an intersection of the support members, and a first support portion 110 is formed on at least one of the support members and outside the intersection. The first support portion 110 is configured to get contact with a support surface to provide a load bearing force or stabilizing force, and the second support portion 109 provides a load bearing force when in contact with the support surface. In an initial condition, the first support portion 110 is in contact with the support surface so as to bear a force, and the second support portion 109 is suspended without contact with the support surface; after a Christmas tree is fixed into the cross Christmas tree stand, the second support portion 109 is in contact with the support surface so as to bear a force, the force borne by the second support portion 109 is far greater than that borne by the first support portion 110, so that weight of the Christmas tree is mainly borne by the second support portion 109, and the first support portion 110 mainly plays a stabilizing role to assist in providing a small support force. In a preferred embodiment, at least one support member is formed by assembling two tree stand members 10. The tree stand member 10 comprises a tree stand member outer end 101, a tree stand member middle section 102 and a tree stand member inner end 103, and the tree stand members 10 are assembled with each other at the tree stand member inner ends 103 to form the tree stand support assembly 100. An assembly portion is provided at the tree stand member inner end 103 of each of the tree stand members 10, a first through hole 104 is provided on the assembly portion, a fastener 15 passes through the first through holes 104 of the tree stand members 10 in turn to fix the tree stand support assembly 100, and the second support portion 109 is formed on the assembly portion on a bottom layer or on the fastener 15. In some other embodiments, the Christmas tree stand further comprises a connector 200, moreover, all the support members are formed by assembling two tree stand members 10 with each other at the intersection, and the assembly portions of the tree stand members 10 are sequentially arranged from top to bottom and are passed through by the fastener 15 so as to be fixed to the connector 200 to form the-eress Christmas tree stand. A tree stand support assembly having a same structure as the tree stand support assembly 100 in the Christmas tree stand described above, but not limited to having the corresponding structure and function of the second support portion 109. A Christmas tree stand consisting of the tree stand support assembly and the connector 200 described above. Embodiment 1 As shown in FIGS. 1-17, the shown is a Christmas tree stand for fixing a Christmas tree therein for festival decoration during Christmas. The Christmas tree stand is mainly adapted to a real Christmas tree made of a fir tree. As shown in FIG. 1, the Christmas tree stand comprises a tree stand support assembly 100 and a connector 200 fixed thereto. As shown in FIG. 2, the connector 200 comprises a first bearing cylinder 201, an interior of the first bearing cylinder 201 is hollow so as to form a bearing cavity 202 for accommodating a Christmas tree, a number of second through holes are provided at an upper portion of the bearing cavity 202, a second nut 203 is welded on an inner wall at the second through holes, an adjusting member 204 is provided with an external thread (not shown in the FIG.), and the adjusting member 204 and the second nut 203 are in thread fit, so that a front end of the adjusting member 204 is screwed in or out of the bearing cavity 202 by rotating the adjusting member, thereby adjusting a distance between the front ends of the adjusting members 204 to adapt to different sizes of Christmas trees. After the Christmas tree is placed in the bearing cavity 202, a bottom surface is supported by a bottom wall of the bearing cavity 202, and the front end of the adjusting member 204 abuts against a trunk of the Christmas tree to fix the Christmas tree. As shown in FIG. 3, in the embodiment, the tree stand support assembly 100 comprises two sets of support members which cross with each other at a middle portion to form a cross tree stand support assembly. Each set of support members is formed by assembling two tree stand members 10 in a head-to-head manner. Of course, it may also be an entire support member. In this embodiment, each set of support members is formed by assembling two tree stand members 10 together. That is, a first tree stand member 11 and a third tree stand member 13, and a second tree stand member 12 and a fourth tree stand member 14 are respectively assembled head-to-head to form the tree stand support assembly as shown in FIG. 3. As shown in FIGS. 4 and 5, a first support portion 110 for getting contact with a surface providing a support force, i.e., a support surface (e.g. a ground), is formed at an outside of the tree stand support assembly, and the first support portions 110 are formed at both ends of each set of support members. A second support portion 109 is also formed at or near an intersection of two sets of support members, and the second support portion 109 is not initially in contact with the support surface. In this embodiment, the second support portion 109 is located below the connector 200. Most preferably, the second support portion 109 is disposed directly below the intersection of two sets of support members, i.e., below a center of the connector 200. As shown in FIG. 7, a fastener 15 for fixing the tree stand support assembly 100 to the connector 200 is provided protruding from a lower surface of the tree stand support assembly 100, and a lower surface of the fastener 15 is formed as the second support portion 109. Of course, in other embodiments, if a bottom surface of the tree stand support assembly 100 is provided with a concave position for the fastener 15 to be fully accommodated therein, the second support portion 109 may be formed from the bottom surface of the tree stand support assembly 100, i.e., from the tree stand support assembly 100 below the intersection. In this embodiment, a gap between the second support portion 109 and the support surface (e.g., the ground) is 0.2-2 cm. In an initial condition, the Christmas tree stand is assembled but the Christmas tree is not placed therein, and at this time, the first support portion 110 is in contact with the support surface to provide a support force, and the second support portion 109 is suspended without contact with the support surface. When the Christmas tree is fixed therein, weight of the Christmas tree acts on the support member, causing it to deform slightly, the second support portion 109 is in contact with the support surface to provide most of the support force, and the first support portion 110 provides only a small amount of the support force, and mainly plays a stabilizing role. That is, the weight of the Christmas tree stand of the disclosure is mainly borne by the second support portion 109 after the Christmas tree is placed therein, and the first support portion 110 plays an auxiliary and stabilizing role. In the process, the above-mentioned deformation causes the second support portion 109 to change from being suspended to bear the force, mainly because each support member is formed by assembling two tree stand members 10 head-to-head, there is an assembly gap at the assembling position, and when bearing a vertical acting force, a greater amount of deformation is generated at a joint of two tree stand members with respect to the whole support member, so that the second support portion 109 is in contact with the support surface. Of course, in other embodiments, when the support member is formed of a single-piece material, structural strength at the intersection may be weakened by thinning the intersection, or the support member may be formed of a relatively more flexible material to achieve the same purpose, but material selection and processing thereof are significantly more difficult than the assembled structure described above. As shown in FIG. 8, the tree stand support assembly 100 is formed by assembling four tree stand members 10 with each other, and comprises a first tree stand member 11, a second tree stand member 12, a third tree stand member 13 and a fourth tree stand member 14, and a fastener 15 passes through the tree stand members in turn and is fitted to a first bearing cylinder 201. Each tree stand member 10 is formed by a tree stand member outer end 101, a tree stand member middle section 102, and a tree stand inner end 103 respectively. Both the tree stand member outer end 101 and the tree stand member inner end 103 are straight, and the tree stand member middle section 102 is slightly curved so that the tree stand member inner end 103 is arranged slightly higher than the tree stand member outer end 101, so that the second support portion 109 is suspended in an initial condition. As shown in FIGS. 9-15, the inner end of the first tree stand member 11 is provided with a first assembly portion 111, the inner end of the second tree stand member 12 is provided with a second assembly portion 121, the inner end of the third tree stand member 13 is provided with a third assembly portion 131, the inner end of the fourth tree stand member 14 is provided with a fourth assembly portion 141, and the first assembly portion 111, the second assembly portion 121, the third assembly portion 131 and the fourth assembly portion 141 are sequentially arranged from top to bottom. In this embodiment, the first assembly portion 111 of the first tree stand member 11 is located at its 1 / 4 height position, the second assembly portion 121 of the second tree stand member 12 is located at its 2 / 4 height position, the third assembly portion 131 of the third tree stand member 13 is located at its 3 / 4 height position, and the fourth assembly portion 141 of the fourth tree stand member 14 is located at its 4 / 4 height position. In other embodiments, the number of the tree stand members 10 may be 3, 5, 6 or more, and when the number of the tree stand members 10 is changed from 4 in Embodiment 1 or Embodiment 2 to 3, 5 or 6, the thickness of the assembly portions should be changed accordingly, from about 1 / 4 of the height of the tree stand members 10 in Embodiment 1 or Embodiment 2 to 1 / 3, 1 / 5 or 1 / 6. Preferably, the tree stand members 10 are uniformly arranged in a circumferential direction, that is, 3 tree stand members are arranged at 120° to each other, and 4 tree stand members are arranged at 90° to each other. Further, in other embodiments, the thickness of the assembly portions may be unequal. The tree stand members 10 of this embodiment are further marked with a numbered numeral respectively for ease of mounting, and are numbered from top to bottom. In this embodiment, the thickness of the assembly portions is substantially equal, and a total height of the assembly portions after they are stacked on top of each other is substantially equal to the height of the tree stand member 10. Therefore, the thickness of each of the assembly portions is about 1 / 4 of the height of the tree stand member 10. Each of the assembly portions is provided with a first through hole 104 therethrough for a fastener 15 to pass therethrough. In this embodiment, in addition to the first through hole 104 provided in the assembly portions at the tree stand member inner ends 103, a clamping structure is provided between two adjacent assembly portions, and comprises two components respectively provided on two assembly portions, and the two clamping components fit with each other to facilitate the assembly of the tree stand support assembly 100 after preliminary clamping between the two adjacent assembly portions. As shown in FIGS. 9-15, a lower surface of the first tree stand member 11 is convexly provided with a clamping convex 105, and the first through hole 104 is arranged on the clamping convex 105. A upper surface of the second tree stand member 12 is concavely provided with a clamping concave 106, a lower surface thereof is convexly provided with a clamping convex 105, the clamping concave 106 and the clamping convex 105 are arranged correspondingly up and down, and the first through hole 104 is arranged on both; and the third tree stand member 13 has the same clamping concave 106 and clamping convex 105 as the second tree stand member 12. A upper surface of the fourth tree stand member 14 is concavely provided with a clamping concave 106. When the tree stand members 10 are assembled with each other, the clamping convex 105 of the first tree stand member 11 is fitted into the clamping concave 106 of the second tree stand member 12, the clamping convex 105 of the second tree stand member 12 is fitted into the clamping concave 106 of the third tree stand 13, the clamping convex 105 of the third tree stand 13 is fitted into the clamping concave 106 of the fourth tree stand 14, and the first through holes 104 are respectively arranged through up and down. As shown in FIG. 6, when the assembly portions of the tree stand members 10 are sequentially stacked, the clamping convexes 105 and the clamping concaves 106 of the adjacent tree stand members 10 concavely and convexly fit for positioning and rotation. In this embodiment, the clamping concave 106 and the clamping convex 105 have a square outer contour respectively, so that each tree stand member 10 is fixed at a relative angle after being fitted up and down, and cannot move arbitrarily. Of course, other non-circular geometric shapes than square shape may achieve the same effect, such as triangle, pentagon and hexagon. In this embodiment, the clamping convex 105 and the clamping concave 106 are in interference fit, that is, the outer contour of the clamping convex 105 is slightly larger than an inner contour of the clamping concave 106, so that the tree stand members 10 can be preliminarily assembled together to form a cross structure under the action of an appropriate external force. Subsequent mounting only requires fixing the whole to the first bearing cylinder 201 by means of the fastener 15, and does not require mounting the tree stand members one by one. In other embodiments, the preliminary assembling and fixing between the tree stand members 10 may be performed by other quick-release structures, for example, two tree stand members 10 are provided with males and females respectively on the assembly portions thereof to be engaged with each other. As shown in FIG. 15, in this embodiment, a clamping portion 142 is further formed in three outside directions of the fourth assembly portion 141, a first snap connection portion 143 is provided on the clamping portion 142, and a second snap connection portion 108 is correspondingly provided on a bottom surface of the inner end of each tree stand-suppert member 10. After the tree stand members 10 are assembled with each other, each first snap connection portion 143 is fitted into a corresponding second snap connection portion 108, and the first snap connection portion 143 and the second snap connection portion 108 fit with each other by interference fit or other snap structures, so as to fix the first tree stand member 11, the second tree stand member 12 and the third tree stand 13 relative to the fourth tree stand member 14 in the up and down direction, so that the four tree stand members themselves can form a relatively stable assembly structure. In this embodiment, the tree stand member inner ends 103 are further arranged to be placed on the clamping portion 142 respectively such that both the tree stand member outer end 101 and the tree stand member inner end 103 may get contact with a support surface (e.g., the ground) to provide a support force. The tree stand member outer end 101 is generally in direct contact with the support surface, while the tree stand member inner end 103 is in contact with the support surface via the clamping portion 142, so that the weight at a center of the tree stand support assembly is not directly borne by the assembly portions 111, 121, 131 and 141, but the tree stand member inner end 103 provides the main support force, thus being capable of playing the strengthening role, enhancing the bearing capacity, reducing material and processing requirements and improving the overall structural firmness. As shown in FIG. 17, a first nut 205 is welded on a bottom surface of the first bearing cylinder 201 for fit with the fastener 15 to fixedly connect the first bearing cylinder 201 with the tree stand support assembly 100. Both sides of the first nut 205 are respectively formed with a welding portion 206 for welding it to the bottom surface of the first bearing cylinder 201, and the other position sides of the first nut 205 do not have the welding portion 206. As shown in FIG. 9, the first assembly portion 111 located on an uppermost layer is concavely provided with a nut concave position 112, and the nut concave position 112 comprises a nut cavity 113 and secondary cavities 114 located on two sides thereof, the nut cavity 113 is configured to accommodate and position a first nut 205, and the secondary cavities 114 are configured to provide the welding portion 206, so that a rotation limiting structure is provided between the tree stand support assembly 100 and the first bearing cylinder 201 so as to facilitate the assembly of the fastener 15. For the Christmas tree stand of this embodiment, the tree stand members are structurally decomposed so that the tree stand members have a short length to facilitate packaging and transportation. In addition, an assembly process thereof is more simple and convenient, and after the tree stand members 10 are assembled in sequence to form an assembly structure capable of fixing themselves, they are fixed to the bottom surface of the first bearing cylinder 201 by the fastener 15. Embodiment 2 As shown in FIG. 18, a Christmas tree stand has a same main structure as that of Embodiment 1, and differs in that the Christmas tree stand of the embodiment further comprises moving wheels 107, with one moving wheel 107 respectively provided at each tree stand member outer end 101 and at the center of the tree stand support assembly 100. Here, the moving wheel 107 and a wheel lock structure are known, and reference can be made to moving wheels in the field of furniture, which will not be described in detail herein. Furthermore, whether the moving wheel 107 has a locking structure is not limited. Embodiment 3 As shown in FIGS. 19 and 20. a Christmas tree stand has a same main as that of Embodiment 1 or Embodiment 2, and differs in that a connector 200 of the embodiment is different from that of Embodiment 1, and the tree stand support assemblies 100 of both embodiments are the same. Unlike Embodiment 1 which is mainly applied to a real Christmas tree, the Christmas tree stand of the Embodiment is mainly adapted to an artificial Christmas tree. In the Embodiment, the connector 200 comprises a second bearing cylinder 210 and a covering member 211, the second bearing cylinder 210 is made of a metal tube, a bottom sheet is welded to a bottom surface thereof, a threaded hole is provided on the bottom surface for a fastener 15 to fit, and the fastener 15 passes through the tree stand members 10 in turn and fits in the threaded hole, so that the second bearing cylinder 210 is fixedly fixed to the tree stand support assembly 100. The covering member 211 is placed between the second bearing cylinder 210 and the tree stand support assembly 100, and is provided with a third through hole or a threaded hole for the fastener 15 to pass through. The covering member 211 is mainly configured for decoration, and covers junctions of the tree stand members 10. In the Embodiment, since weight of an artificial tree is much lighter than that of a real tree, and fixing strength of the artificial tree is reduced accordingly, an adjusting member 204 of the Embodiment can be fitted into the threaded hole provided on the second bearing cylinder 210 and having an internal thread on an internal wall thereof by means of an external thread on an outer surface thereof, without welding a second nut 203 as in Embodiment 1. Embodiment 4 An assembled support assembly has a structure similar to the tree stand support assembly 100 in Embodiment 1, is formed by assembling four tree stand members 10 to each other, and the tree stand members 10 are assembled to each other by corresponding assembly portions 111, 121, 131 and 141, respectively, as shown in FIGS. 3 and 8-15. The difference is that, in the embodiment, a gap between a second support portion 109 at a central position of the tree stand support assembly 100 and a support surface (e.g., the ground) is not limited to 0.2-2 cm. That is, in the Embodiment, a bottom surface of the tree stand support assembly 100 may be horizontal, or only a number of peripheral first support portions 110 may be in contact with the support surface such as the ground to provide a support force, and the second support portion 109 may not be in contact with the support surface at all times (regardless of whether the Christmas tree is erected or not). Of course, it is also possible to have the second support portion 109 in contact with the support surface to bear the force after the erection of the Christmas tree as in Embodiment 1. In other embodiments, the number of the tree stand members 10 may be 3, 5, 6 or more. The assembled support assembly may be applied to a Christmas tree stand for support, or to other load-bearing components for support, such as being fixed to a bottom of a flowerpot body for support. Embodiment 5 A Christmas tree stand comprises the tree stand support assembly 100 of Embodiment 4 and a connector 200. Here, the structure of the connector 200 is the same as or similar to that of Embodiment 1 or 3, as shown with reference to FIGS. 1-2 and 17-20. In this embodiment, the tree stand support assembly 100 does not have moving wheels 107. In other embodiments, the tree stand support assembly 100 may also have moving wheels 107, as described with reference to Embodiment 2. The tree stand support assemblies of Embodiments 4 and 5 together with the Christmas tree stand have the following beneficial effects: 1. The tree stand support assembly is formed by assembling, which can reduce product volume in the process of packaging and transportation, and is beneficial to reducing the cost. 2. The assembly process is convenient and the structure is firm after assembly. 3. The tree stand support assembly can be adapted to real trees and artificial trees by using different connectors, which can improve the versatility of parts and enrich the diversity of products. 4. The tree stand support assembly can be shaped after self-assembly to form a pre-assembly body with preliminary self-retention, and the tree stand members 10, after assembly, can form a pre-assembly body which cannot easily fall off as shown in FIG. 3, so that it can be conveniently taken, moved and assembled during subsequent assembly, facilitating the operation.

Claims

1. A Christmas tree stand, comprising:a tree stand support assembly comprising at least three tree stand members, each tree stand member having a tree stand member outer end at an outer end thereof and a tree stand member inner end at an inner end thereof, and the tree stand members being assembled with each other at the tree stand inner ends to form the tree stand support assembly; anda connector fixed to the tree stand support assembly for bearing a Christmas tree;wherein an assembly portion is provided at the tree stand member inner end of each of the tree stand members, a clamping convex and a clamping concave are respectively provided at a lower surface of the assembly portion^ of one of the tree stand members and at an upper surface of the assembly portion of an adjacent tree stand member, the clamping convex is arranged in a convex manner, and the clamping concave is arranged in a concave manner, and after assembly, the clamping convex is snapped into the clamping concave to limit relative rotation between the two adjacent tree stand members;the clamping convex and the clamping concave are assembled in an interference fit manner to realize assembly and shaping of each of the tree stand members; or a clamping portion is formed on an outer side of the assembly portion of one of the tree stand members, first snap connection portions are provided on the clamping portion, and second snap connection portions are provided on the remaining tree stand members, and the firs snap connection portions and the second snap connection portions are in interference fit or snap-fitted with each other to realize the assembly and shaping of each of the tree stand members; anda first through hole is provided on the assembly portion of each of the tree stand members, and a fastener passes through the first through hole of each of the tree stand members in turn and is fixedly connected with the connector.

2. The Christmas tree stand according to claim 1, wherein the and the clamping concave have a triangular, quadrilateral, pentagonal or hexagonal cross-sectional shape to limit the relative rotation between the two adjacent tree stand members after assembly.

3. The Christmas tree stand according to claim 2, wherein the tree stand members have an identical height, the assembly portions of the tree stand members are sequentially arranged from top to bottom, the assembly portions of the tree stand members have an identical thickness and are arranged at corresponding height positions on the tree stand members, and after assembly, a sum of the thicknesses of the assembly portions is equal to the height of the tree stand members.

4. The Christmas tree stand according to claim 3, wherein the tree stand members are 3, 4, 5 or 6in number and are uniformly arranged in a circumferential direction.

5. The Christmas tree stand according to claim 4, wherein the clamping portion is arranged on the outer side of the assembly portion of the tree stand member on a bottom layer after assembly, and the second snap connection portions are arranged on bottom surfaces of the remaining tree stand member inner ends; and the tree stand member inner ends are arranged on the clamping portion, so that both the tree stand member outer ends and the tree stand member inner ends are in contact with a support surface to provide a support force.

6. The Christmas tree stand according to claim 1, wherein a first nut is welded to a bottom surface of the connector, and the fastener is in threaded connection with the first nut.

7. The Christmas tree stand according to claim 6, wherein the connector comprises a first bearing cylinder, the first bearing cylinder has a hollow interior so as to form a bearing cavity for accommodating the Christmas tree, the first nut is welded to a bottom surface of the first bearing cylinder, a plurality of second through holes are provided at an upper portion of the bearing cavity, a second nut is welded to an inner wall of the second through hole, and an adjusting member is in thread fit with the second nut; orthe connector comprises a second bearing cylinder and a covering member, the first nut is welded to a bottom surface of the second bearing cylinder, and the covering member is arranged between the second bearing cylinder and the tree stand support assembly.

8. The Christmas tree stand according to claim 6, wherein the tree stand support assembly is further provided with a plurality of moving wheels, and the moving wheels are arranged at each of the tree stand member outer ends and at a center of the tree stand support assembly.

9. The Christmas tree stand according to claim 1, wherein a second support portion is also formed at an intersection of the tree stand members, the second support portion is formed on the fastener, and a first support portion is formed at the tree stand member outer end of each of the tree stand members; andin an initial condition, the first support portion is in contact with the support surface to bear a force, and the second support portion is suspended without contact with the support surface; and after the Christmas tree is fixed into the connector, the second support portion is brought into contact with the support surface to bear the force, and the second support portion bears a greater force than the first support portion.

10. The Christmas tree stand according to claim 9, wherein the first support portion is formed at each of the tree stand member outer ends, and an initial gap between the second support portion and the support surface is 0.2-2 cm.

11. The Christmas tree stand according to claim 6, wherein a welding portion for welding the firstnut to the bottom surface of the first bearing cylinder is formed on an outer side of the first nut; anda nut concave position is concavely provided on the upper surface of the assembly portion of the tree stand member on a top layer, the nut concave position comprises a nut cavity and secondary cavities located at both sides thereof, the nut cavity is configured to accommodate and position the first nut, and the secondary cavities are configured to provide the welding portion so that a rotation limiting structure is formed between the tree stand support assembly and the first bearing cylinder.

12. An assembled support assembly, comprising at least three tree stand members, each of the tree stand members having a tree stand member outer end at an outer end thereof and a tree stand member inner end at an inner end thereof, and the tree stand members being assembled with each other at the tree stand member inner ends to form the assembled support assembly;wherein an assembly portion is provided at the tree stand member inner end of each of the tree stand members, a clamping convex and a clamping concave are respectively provided at a lower surface of the assembly portion of one of the tree stand members and at an upper surface of the assembly portion of an adjacent tree stand member, the clamping convex is arranged in a convex manner, and the clamping concave is arranged in a concave manner, and after assembly, the clamping convex is snapped into the clamping concave to limit relative rotation between the two adjacent tree stand members;the clamping convex and the clamping concave are assembled in an interference fit manner to realize assembly and shaping of each of the tree stand members; or a clamping portion is formed on an outer side of the assembly portion of one of the tree stand members, first snap connection portions are provided on the clamping portion, and second snap connection portions are provided on the remaining tree stand members, and the first snap connection portions and the second snap connection portions are in interference fit or snap-fitted with each other to realize the assembly and shaping of each of the tree stand members; anda first through hole is provided on the assembly portion of each of the tree stand members, and a fastener passes through each of the tree stand members in turn.

13. The Christmas tree stand according to claim 12, wherein the clamping convex and the clamping concave have a triangular, quadrilateral, pentagonal or hexagonal cross-sectional shape to limit the relative rotation between the two adjacent tree stand members after assembly.

14. The Christmas tree stand according to claim 13, wherein the tree stand members have an identical height, the assembly portions of the tree stand members are sequentially arranged from top to bottom, the assembly portions of the tree stand members have an identical thickness and are arranged at corresponding height positions on the tree stand members, and after assembly, a sumof the thicknesses of the assembly portions is equal to the height of the tree stand members.

15. The Christmas tree stand according to claim 14, wherein the tree stand members are 3, 4, 5 or 6 in number and are uniformly spaced from each other in a circumferential direction.

16. The Christmas tree stand according to claim 15, wherein the clamping portion is arranged on the assembly portion of the tree stand member on a bottom layer after assembly, and the second snap connection portions are arranged on bottom surfaces of the tree stand member inner ends of other tree stand members; and the tree stand member inner ends are arranged on the clamping portion, so that both tree stand member outer ends and the tree stand member inner ends are in contact with a support surface to provide a support force.

17. The Christmas tree stand according to claim 12, wherein a second support portion is formed at an intersection of support members, the second support portion is formed on the fastener, and a first support portion is formed at the tree stand member outer end of each of the tree stand members; and the first support portion is formed at each of the tree stand member outer ends, and the second support portion is arranged higher than the first support portion.

18. The Christmas tree stand according to claim 17, wherein a height difference between the second support portion and the first support portion is 0.2-2 cm.

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